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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtGui module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include "qtextdocumentlayout_p.h" |
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43 #include "qtextdocument_p.h" |
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44 #include "qtextimagehandler_p.h" |
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45 #include "qtexttable.h" |
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46 #include "qtextlist.h" |
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47 #include "qtextengine_p.h" |
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48 #include "private/qcssutil_p.h" |
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49 |
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50 #include "qabstracttextdocumentlayout_p.h" |
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51 #include "qcssparser_p.h" |
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52 |
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53 #include <qpainter.h> |
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54 #include <qmath.h> |
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55 #include <qrect.h> |
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56 #include <qpalette.h> |
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57 #include <qdebug.h> |
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58 #include <qvarlengtharray.h> |
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59 #include <limits.h> |
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60 #include <qstyle.h> |
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61 #include <qbasictimer.h> |
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62 #include "private/qfunctions_p.h" |
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63 |
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64 // #define LAYOUT_DEBUG |
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65 |
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66 #ifdef LAYOUT_DEBUG |
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67 #define LDEBUG qDebug() |
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68 #define INC_INDENT debug_indent += " " |
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69 #define DEC_INDENT debug_indent = debug_indent.left(debug_indent.length()-2) |
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70 #else |
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71 #define LDEBUG if(0) qDebug() |
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72 #define INC_INDENT do {} while(0) |
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73 #define DEC_INDENT do {} while(0) |
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74 #endif |
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75 |
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76 QT_BEGIN_NAMESPACE |
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77 |
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78 extern int qt_defaultDpi(); |
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79 |
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80 // ################ should probably add frameFormatChange notification! |
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81 |
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82 struct QLayoutStruct; |
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83 |
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84 class QTextFrameData : public QTextFrameLayoutData |
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85 { |
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86 public: |
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87 QTextFrameData(); |
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88 |
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89 // relative to parent frame |
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90 QFixedPoint position; |
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91 QFixedSize size; |
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92 |
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93 // contents starts at (margin+border/margin+border) |
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94 QFixed topMargin; |
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95 QFixed bottomMargin; |
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96 QFixed leftMargin; |
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97 QFixed rightMargin; |
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98 QFixed border; |
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99 QFixed padding; |
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100 // contents width includes padding (as we need to treat this on a per cell basis for tables) |
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101 QFixed contentsWidth; |
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102 QFixed contentsHeight; |
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103 QFixed oldContentsWidth; |
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104 |
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105 // accumulated margins |
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106 QFixed effectiveTopMargin; |
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107 QFixed effectiveBottomMargin; |
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108 |
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109 QFixed minimumWidth; |
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110 QFixed maximumWidth; |
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111 |
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112 QLayoutStruct *currentLayoutStruct; |
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113 |
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114 bool sizeDirty; |
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115 bool layoutDirty; |
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116 |
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117 QList<QPointer<QTextFrame> > floats; |
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118 }; |
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119 |
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120 QTextFrameData::QTextFrameData() |
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121 : maximumWidth(QFIXED_MAX), |
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122 currentLayoutStruct(0), sizeDirty(true), layoutDirty(true) |
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123 { |
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124 } |
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125 |
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126 struct QLayoutStruct { |
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127 QLayoutStruct() : maximumWidth(QFIXED_MAX), fullLayout(false) |
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128 {} |
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129 QTextFrame *frame; |
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130 QFixed x_left; |
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131 QFixed x_right; |
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132 QFixed frameY; // absolute y position of the current frame |
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133 QFixed y; // always relative to the current frame |
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134 QFixed contentsWidth; |
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135 QFixed minimumWidth; |
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136 QFixed maximumWidth; |
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137 bool fullLayout; |
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138 QList<QTextFrame *> pendingFloats; |
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139 QFixed pageHeight; |
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140 QFixed pageBottom; |
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141 QFixed pageTopMargin; |
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142 QFixed pageBottomMargin; |
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143 QRectF updateRect; |
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144 QRectF updateRectForFloats; |
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145 |
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146 inline void addUpdateRectForFloat(const QRectF &rect) { |
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147 if (updateRectForFloats.isValid()) |
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148 updateRectForFloats |= rect; |
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149 else |
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150 updateRectForFloats = rect; |
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151 } |
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152 |
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153 inline QFixed absoluteY() const |
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154 { return frameY + y; } |
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155 |
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156 inline int currentPage() const |
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157 { return pageHeight == 0 ? 0 : (absoluteY() / pageHeight).truncate(); } |
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158 |
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159 inline void newPage() |
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160 { if (pageHeight == QFIXED_MAX) return; pageBottom += pageHeight; y = pageBottom - pageHeight + pageBottomMargin + pageTopMargin - frameY; } |
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161 }; |
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162 |
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163 class QTextTableData : public QTextFrameData |
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164 { |
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165 public: |
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166 QFixed cellSpacing, cellPadding; |
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167 qreal deviceScale; |
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168 QVector<QFixed> minWidths; |
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169 QVector<QFixed> maxWidths; |
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170 QVector<QFixed> widths; |
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171 QVector<QFixed> heights; |
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172 QVector<QFixed> columnPositions; |
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173 QVector<QFixed> rowPositions; |
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174 |
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175 QVector<QFixed> cellVerticalOffsets; |
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176 |
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177 QFixed headerHeight; |
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178 |
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179 // maps from cell index (row + col * rowCount) to child frames belonging to |
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180 // the specific cell |
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181 QMultiHash<int, QTextFrame *> childFrameMap; |
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182 |
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183 inline QFixed cellWidth(int column, int colspan) const |
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184 { return columnPositions.at(column + colspan - 1) + widths.at(column + colspan - 1) |
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185 - columnPositions.at(column); } |
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186 |
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187 inline void calcRowPosition(int row) |
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188 { |
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189 if (row > 0) |
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190 rowPositions[row] = rowPositions.at(row - 1) + heights.at(row - 1) + border + cellSpacing + border; |
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191 } |
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192 |
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193 QRectF cellRect(const QTextTableCell &cell) const; |
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194 |
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195 inline QFixed paddingProperty(const QTextFormat &format, QTextFormat::Property property) const |
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196 { |
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197 QVariant v = format.property(property); |
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198 if (v.isNull()) { |
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199 return cellPadding; |
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200 } else { |
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201 Q_ASSERT(v.userType() == QVariant::Double || v.userType() == QMetaType::Float); |
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202 return QFixed::fromReal(v.toReal() * deviceScale); |
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203 } |
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204 } |
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205 |
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206 inline QFixed topPadding(const QTextFormat &format) const |
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207 { |
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208 return paddingProperty(format, QTextFormat::TableCellTopPadding); |
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209 } |
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210 |
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211 inline QFixed bottomPadding(const QTextFormat &format) const |
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212 { |
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213 return paddingProperty(format, QTextFormat::TableCellBottomPadding); |
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214 } |
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215 |
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216 inline QFixed leftPadding(const QTextFormat &format) const |
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217 { |
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218 return paddingProperty(format, QTextFormat::TableCellLeftPadding); |
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219 } |
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220 |
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221 inline QFixed rightPadding(const QTextFormat &format) const |
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222 { |
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223 return paddingProperty(format, QTextFormat::TableCellRightPadding); |
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224 } |
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225 |
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226 inline QFixedPoint cellPosition(const QTextTableCell &cell) const |
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227 { |
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228 const QTextFormat fmt = cell.format(); |
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229 return cellPosition(cell.row(), cell.column()) + QFixedPoint(leftPadding(fmt), topPadding(fmt)); |
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230 } |
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231 |
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232 void updateTableSize(); |
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233 |
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234 private: |
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235 inline QFixedPoint cellPosition(int row, int col) const |
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236 { return QFixedPoint(columnPositions.at(col), rowPositions.at(row) + cellVerticalOffsets.at(col + row * widths.size())); } |
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237 }; |
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238 |
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239 static QTextFrameData *createData(QTextFrame *f) |
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240 { |
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241 QTextFrameData *data; |
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242 if (qobject_cast<QTextTable *>(f)) |
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243 data = new QTextTableData; |
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244 else |
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245 data = new QTextFrameData; |
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246 f->setLayoutData(data); |
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247 return data; |
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248 } |
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249 |
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250 static inline QTextFrameData *data(QTextFrame *f) |
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251 { |
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252 QTextFrameData *data = static_cast<QTextFrameData *>(f->layoutData()); |
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253 if (!data) |
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254 data = createData(f); |
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255 return data; |
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256 } |
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257 |
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258 static bool isFrameFromInlineObject(QTextFrame *f) |
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259 { |
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260 return f->firstPosition() > f->lastPosition(); |
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261 } |
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262 |
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263 void QTextTableData::updateTableSize() |
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264 { |
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265 const QFixed effectiveTopMargin = this->topMargin + border + padding; |
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266 const QFixed effectiveBottomMargin = this->bottomMargin + border + padding; |
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267 const QFixed effectiveLeftMargin = this->leftMargin + border + padding; |
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268 const QFixed effectiveRightMargin = this->rightMargin + border + padding; |
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269 size.height = contentsHeight == -1 |
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270 ? rowPositions.last() + heights.last() + padding + border + cellSpacing + effectiveBottomMargin |
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271 : effectiveTopMargin + contentsHeight + effectiveBottomMargin; |
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272 size.width = effectiveLeftMargin + contentsWidth + effectiveRightMargin; |
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273 } |
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274 |
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275 QRectF QTextTableData::cellRect(const QTextTableCell &cell) const |
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276 { |
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277 const int row = cell.row(); |
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278 const int rowSpan = cell.rowSpan(); |
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279 const int column = cell.column(); |
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280 const int colSpan = cell.columnSpan(); |
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281 |
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282 return QRectF(columnPositions.at(column).toReal(), |
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283 rowPositions.at(row).toReal(), |
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284 (columnPositions.at(column + colSpan - 1) + widths.at(column + colSpan - 1) - columnPositions.at(column)).toReal(), |
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285 (rowPositions.at(row + rowSpan - 1) + heights.at(row + rowSpan - 1) - rowPositions.at(row)).toReal()); |
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286 } |
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287 |
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288 static inline bool isEmptyBlockBeforeTable(const QTextBlock &block, const QTextBlockFormat &format, const QTextFrame::Iterator &nextIt) |
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289 { |
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290 return !nextIt.atEnd() |
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291 && qobject_cast<QTextTable *>(nextIt.currentFrame()) |
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292 && block.isValid() |
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293 && block.length() == 1 |
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294 && !format.hasProperty(QTextFormat::BlockTrailingHorizontalRulerWidth) |
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295 && !format.hasProperty(QTextFormat::BackgroundBrush) |
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296 && nextIt.currentFrame()->firstPosition() == block.position() + 1 |
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297 ; |
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298 } |
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299 |
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300 static inline bool isEmptyBlockBeforeTable(QTextFrame::Iterator it) |
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301 { |
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302 QTextFrame::Iterator next = it; ++next; |
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303 if (it.currentFrame()) |
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304 return false; |
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305 QTextBlock block = it.currentBlock(); |
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306 return isEmptyBlockBeforeTable(block, block.blockFormat(), next); |
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307 } |
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308 |
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309 static inline bool isEmptyBlockAfterTable(const QTextBlock &block, const QTextFrame *previousFrame) |
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310 { |
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311 return qobject_cast<const QTextTable *>(previousFrame) |
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312 && block.isValid() |
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313 && block.length() == 1 |
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314 && previousFrame->lastPosition() == block.position() - 1 |
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315 ; |
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316 } |
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317 |
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318 static inline bool isLineSeparatorBlockAfterTable(const QTextBlock &block, const QTextFrame *previousFrame) |
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319 { |
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320 return qobject_cast<const QTextTable *>(previousFrame) |
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321 && block.isValid() |
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322 && block.length() > 1 |
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323 && block.text().at(0) == QChar::LineSeparator |
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324 && previousFrame->lastPosition() == block.position() - 1 |
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325 ; |
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326 } |
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327 |
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328 /* |
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329 |
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330 Optimisation strategies: |
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331 |
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332 HTML layout: |
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333 |
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334 * Distinguish between normal and special flow. For normal flow the condition: |
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335 y1 > y2 holds for all blocks with b1.key() > b2.key(). |
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336 * Special flow is: floats, table cells |
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337 |
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338 * Normal flow within table cells. Tables (not cells) are part of the normal flow. |
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339 |
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340 |
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341 * If blocks grows/shrinks in height and extends over whole page width at the end, move following blocks. |
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342 * If height doesn't change, no need to do anything |
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343 |
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344 Table cells: |
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345 |
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346 * If minWidth of cell changes, recalculate table width, relayout if needed. |
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347 * What about maxWidth when doing auto layout? |
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348 |
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349 Floats: |
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350 * need fixed or proportional width, otherwise don't float! |
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351 * On width/height change relayout surrounding paragraphs. |
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352 |
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353 Document width change: |
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354 * full relayout needed |
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355 |
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356 |
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357 Float handling: |
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358 |
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359 * Floats are specified by a special format object. |
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360 * currently only floating images are implemented. |
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361 |
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362 */ |
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363 |
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364 /* |
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365 |
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366 On the table layouting: |
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367 |
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368 +---[ table border ]------------------------- |
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369 | [ cell spacing ] |
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370 | +------[ cell border ]-----+ +-------- |
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371 | | | | |
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372 | | |
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373 | | |
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374 | | |
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375 | |
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376 |
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377 rowPositions[i] and columnPositions[i] point at the cell content |
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378 position. So for example the left border is drawn at |
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379 x = columnPositions[i] - fd->border and similar for y. |
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380 |
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381 */ |
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382 |
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383 struct QCheckPoint |
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384 { |
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385 QFixed y; |
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386 QFixed frameY; // absolute y position of the current frame |
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387 int positionInFrame; |
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388 QFixed minimumWidth; |
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389 QFixed maximumWidth; |
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390 QFixed contentsWidth; |
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391 }; |
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392 Q_DECLARE_TYPEINFO(QCheckPoint, Q_PRIMITIVE_TYPE); |
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393 |
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394 Q_STATIC_GLOBAL_OPERATOR bool operator<(const QCheckPoint &checkPoint, QFixed y) |
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395 { |
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396 return checkPoint.y < y; |
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397 } |
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398 |
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399 Q_STATIC_GLOBAL_OPERATOR bool operator<(const QCheckPoint &checkPoint, int pos) |
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400 { |
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401 return checkPoint.positionInFrame < pos; |
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402 } |
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403 |
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404 static void fillBackground(QPainter *p, const QRectF &rect, QBrush brush, const QPointF &origin, QRectF gradientRect = QRectF()) |
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405 { |
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406 p->save(); |
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407 if (brush.style() >= Qt::LinearGradientPattern && brush.style() <= Qt::ConicalGradientPattern) { |
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408 if (!gradientRect.isNull()) { |
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409 QTransform m; |
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410 m.translate(gradientRect.left(), gradientRect.top()); |
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411 m.scale(gradientRect.width(), gradientRect.height()); |
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412 brush.setTransform(m); |
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413 const_cast<QGradient *>(brush.gradient())->setCoordinateMode(QGradient::LogicalMode); |
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414 } |
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415 } else { |
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416 p->setBrushOrigin(origin); |
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417 } |
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418 p->fillRect(rect, brush); |
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419 p->restore(); |
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420 } |
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421 |
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422 class QTextDocumentLayoutPrivate : public QAbstractTextDocumentLayoutPrivate |
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423 { |
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424 Q_DECLARE_PUBLIC(QTextDocumentLayout) |
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425 public: |
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426 QTextDocumentLayoutPrivate(); |
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427 |
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428 QTextOption::WrapMode wordWrapMode; |
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429 #ifdef LAYOUT_DEBUG |
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430 mutable QString debug_indent; |
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431 #endif |
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432 |
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433 int fixedColumnWidth; |
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434 int cursorWidth; |
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435 |
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436 QSizeF lastReportedSize; |
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437 QRectF viewportRect; |
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438 QRectF clipRect; |
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439 |
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440 mutable int currentLazyLayoutPosition; |
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441 mutable int lazyLayoutStepSize; |
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442 QBasicTimer layoutTimer; |
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443 mutable QBasicTimer sizeChangedTimer; |
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444 uint showLayoutProgress : 1; |
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445 uint insideDocumentChange : 1; |
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446 |
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447 int lastPageCount; |
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448 qreal idealWidth; |
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449 bool contentHasAlignment; |
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450 |
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451 QFixed blockIndent(const QTextBlockFormat &blockFormat) const; |
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452 |
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453 void drawFrame(const QPointF &offset, QPainter *painter, const QAbstractTextDocumentLayout::PaintContext &context, |
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454 QTextFrame *f) const; |
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455 void drawFlow(const QPointF &offset, QPainter *painter, const QAbstractTextDocumentLayout::PaintContext &context, |
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456 QTextFrame::Iterator it, const QList<QTextFrame *> &floats, QTextBlock *cursorBlockNeedingRepaint) const; |
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457 void drawBlock(const QPointF &offset, QPainter *painter, const QAbstractTextDocumentLayout::PaintContext &context, |
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458 QTextBlock bl, bool inRootFrame) const; |
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459 void drawListItem(const QPointF &offset, QPainter *painter, const QAbstractTextDocumentLayout::PaintContext &context, |
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460 QTextBlock bl, const QTextCharFormat *selectionFormat) const; |
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461 void drawTableCell(const QRectF &cellRect, QPainter *painter, const QAbstractTextDocumentLayout::PaintContext &cell_context, |
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462 QTextTable *table, QTextTableData *td, int r, int c, |
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463 QTextBlock *cursorBlockNeedingRepaint, QPointF *cursorBlockOffset) const; |
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464 void drawBorder(QPainter *painter, const QRectF &rect, qreal topMargin, qreal bottomMargin, qreal border, |
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465 const QBrush &brush, QTextFrameFormat::BorderStyle style) const; |
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466 void drawFrameDecoration(QPainter *painter, QTextFrame *frame, QTextFrameData *fd, const QRectF &clip, const QRectF &rect) const; |
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467 |
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468 enum HitPoint { |
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469 PointBefore, |
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470 PointAfter, |
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471 PointInside, |
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472 PointExact |
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473 }; |
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474 HitPoint hitTest(QTextFrame *frame, const QFixedPoint &point, int *position, QTextLayout **l, Qt::HitTestAccuracy accuracy) const; |
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475 HitPoint hitTest(QTextFrame::Iterator it, HitPoint hit, const QFixedPoint &p, |
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476 int *position, QTextLayout **l, Qt::HitTestAccuracy accuracy) const; |
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477 HitPoint hitTest(QTextTable *table, const QFixedPoint &point, int *position, QTextLayout **l, Qt::HitTestAccuracy accuracy) const; |
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478 HitPoint hitTest(QTextBlock bl, const QFixedPoint &point, int *position, QTextLayout **l, Qt::HitTestAccuracy accuracy) const; |
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479 |
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480 QLayoutStruct layoutCell(QTextTable *t, const QTextTableCell &cell, QFixed width, |
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481 int layoutFrom, int layoutTo, QTextTableData *tableData, QFixed absoluteTableY, |
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482 bool withPageBreaks); |
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483 void setCellPosition(QTextTable *t, const QTextTableCell &cell, const QPointF &pos); |
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484 QRectF layoutTable(QTextTable *t, int layoutFrom, int layoutTo, QFixed parentY); |
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485 |
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486 void positionFloat(QTextFrame *frame, QTextLine *currentLine = 0); |
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487 |
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488 // calls the next one |
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489 QRectF layoutFrame(QTextFrame *f, int layoutFrom, int layoutTo, QFixed parentY = 0); |
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490 QRectF layoutFrame(QTextFrame *f, int layoutFrom, int layoutTo, QFixed frameWidth, QFixed frameHeight, QFixed parentY = 0); |
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491 |
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492 void layoutBlock(const QTextBlock &bl, int blockPosition, const QTextBlockFormat &blockFormat, |
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493 QLayoutStruct *layoutStruct, int layoutFrom, int layoutTo, const QTextBlockFormat *previousBlockFormat); |
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494 void layoutFlow(QTextFrame::Iterator it, QLayoutStruct *layoutStruct, int layoutFrom, int layoutTo, QFixed width = 0); |
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495 void pageBreakInsideTable(QTextTable *table, QLayoutStruct *layoutStruct); |
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496 |
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497 |
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498 void floatMargins(const QFixed &y, const QLayoutStruct *layoutStruct, QFixed *left, QFixed *right) const; |
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499 QFixed findY(QFixed yFrom, const QLayoutStruct *layoutStruct, QFixed requiredWidth) const; |
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500 |
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501 QVector<QCheckPoint> checkPoints; |
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502 |
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503 QTextFrame::Iterator frameIteratorForYPosition(QFixed y) const; |
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504 QTextFrame::Iterator frameIteratorForTextPosition(int position) const; |
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505 |
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506 void ensureLayouted(QFixed y) const; |
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507 void ensureLayoutedByPosition(int position) const; |
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508 inline void ensureLayoutFinished() const |
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509 { ensureLayoutedByPosition(INT_MAX); } |
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510 void layoutStep() const; |
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511 |
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512 QRectF frameBoundingRectInternal(QTextFrame *frame) const; |
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513 |
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514 qreal scaleToDevice(qreal value) const; |
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515 QFixed scaleToDevice(QFixed value) const; |
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516 }; |
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517 |
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518 QTextDocumentLayoutPrivate::QTextDocumentLayoutPrivate() |
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519 : fixedColumnWidth(-1), |
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520 cursorWidth(1), |
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521 currentLazyLayoutPosition(-1), |
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522 lazyLayoutStepSize(1000), |
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523 lastPageCount(-1) |
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524 { |
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525 showLayoutProgress = true; |
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526 insideDocumentChange = false; |
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527 idealWidth = 0; |
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528 contentHasAlignment = false; |
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529 } |
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530 |
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531 QTextFrame::Iterator QTextDocumentLayoutPrivate::frameIteratorForYPosition(QFixed y) const |
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532 { |
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533 QTextFrame *rootFrame = document->rootFrame(); |
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534 |
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535 if (checkPoints.isEmpty() |
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536 || y < 0 || y > data(rootFrame)->size.height) |
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537 return rootFrame->begin(); |
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538 |
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539 QVector<QCheckPoint>::ConstIterator checkPoint = qLowerBound(checkPoints.begin(), checkPoints.end(), y); |
|
540 if (checkPoint == checkPoints.end()) |
|
541 return rootFrame->begin(); |
|
542 |
|
543 if (checkPoint != checkPoints.begin()) |
|
544 --checkPoint; |
|
545 |
|
546 const int position = rootFrame->firstPosition() + checkPoint->positionInFrame; |
|
547 return frameIteratorForTextPosition(position); |
|
548 } |
|
549 |
|
550 QTextFrame::Iterator QTextDocumentLayoutPrivate::frameIteratorForTextPosition(int position) const |
|
551 { |
|
552 QTextFrame *rootFrame = docPrivate->rootFrame(); |
|
553 |
|
554 const QTextDocumentPrivate::BlockMap &map = docPrivate->blockMap(); |
|
555 const int begin = map.findNode(rootFrame->firstPosition()); |
|
556 const int end = map.findNode(rootFrame->lastPosition()+1); |
|
557 |
|
558 const int block = map.findNode(position); |
|
559 const int blockPos = map.position(block); |
|
560 |
|
561 QTextFrame::iterator it(rootFrame, block, begin, end); |
|
562 |
|
563 QTextFrame *containingFrame = docPrivate->frameAt(blockPos); |
|
564 if (containingFrame != rootFrame) { |
|
565 while (containingFrame->parentFrame() != rootFrame) { |
|
566 containingFrame = containingFrame->parentFrame(); |
|
567 Q_ASSERT(containingFrame); |
|
568 } |
|
569 |
|
570 it.cf = containingFrame; |
|
571 it.cb = 0; |
|
572 } |
|
573 |
|
574 return it; |
|
575 } |
|
576 |
|
577 QTextDocumentLayoutPrivate::HitPoint |
|
578 QTextDocumentLayoutPrivate::hitTest(QTextFrame *frame, const QFixedPoint &point, int *position, QTextLayout **l, Qt::HitTestAccuracy accuracy) const |
|
579 { |
|
580 QTextFrameData *fd = data(frame); |
|
581 // ######### |
|
582 if (fd->layoutDirty) |
|
583 return PointAfter; |
|
584 Q_ASSERT(!fd->layoutDirty); |
|
585 Q_ASSERT(!fd->sizeDirty); |
|
586 const QFixedPoint relativePoint(point.x - fd->position.x, point.y - fd->position.y); |
|
587 |
|
588 QTextFrame *rootFrame = docPrivate->rootFrame(); |
|
589 |
|
590 // LDEBUG << "checking frame" << frame->firstPosition() << "point=" << point |
|
591 // << "position" << fd->position << "size" << fd->size; |
|
592 if (frame != rootFrame) { |
|
593 if (relativePoint.y < 0 || relativePoint.x < 0) { |
|
594 *position = frame->firstPosition() - 1; |
|
595 // LDEBUG << "before pos=" << *position; |
|
596 return PointBefore; |
|
597 } else if (relativePoint.y > fd->size.height || relativePoint.x > fd->size.width) { |
|
598 *position = frame->lastPosition() + 1; |
|
599 // LDEBUG << "after pos=" << *position; |
|
600 return PointAfter; |
|
601 } |
|
602 } |
|
603 |
|
604 if (isFrameFromInlineObject(frame)) { |
|
605 *position = frame->firstPosition() - 1; |
|
606 return PointExact; |
|
607 } |
|
608 |
|
609 if (QTextTable *table = qobject_cast<QTextTable *>(frame)) { |
|
610 const int rows = table->rows(); |
|
611 const int columns = table->columns(); |
|
612 QTextTableData *td = static_cast<QTextTableData *>(data(table)); |
|
613 |
|
614 if (!td->childFrameMap.isEmpty()) { |
|
615 for (int r = 0; r < rows; ++r) { |
|
616 for (int c = 0; c < columns; ++c) { |
|
617 QTextTableCell cell = table->cellAt(r, c); |
|
618 if (cell.row() != r || cell.column() != c) |
|
619 continue; |
|
620 |
|
621 QRectF cellRect = td->cellRect(cell); |
|
622 const QFixedPoint cellPos = QFixedPoint::fromPointF(cellRect.topLeft()); |
|
623 const QFixedPoint pointInCell = relativePoint - cellPos; |
|
624 |
|
625 const QList<QTextFrame *> childFrames = td->childFrameMap.values(r + c * rows); |
|
626 for (int i = 0; i < childFrames.size(); ++i) { |
|
627 QTextFrame *child = childFrames.at(i); |
|
628 if (isFrameFromInlineObject(child) |
|
629 && child->frameFormat().position() != QTextFrameFormat::InFlow |
|
630 && hitTest(child, pointInCell, position, l, accuracy) == PointExact) |
|
631 { |
|
632 return PointExact; |
|
633 } |
|
634 } |
|
635 } |
|
636 } |
|
637 } |
|
638 |
|
639 return hitTest(table, relativePoint, position, l, accuracy); |
|
640 } |
|
641 |
|
642 const QList<QTextFrame *> childFrames = frame->childFrames(); |
|
643 for (int i = 0; i < childFrames.size(); ++i) { |
|
644 QTextFrame *child = childFrames.at(i); |
|
645 if (isFrameFromInlineObject(child) |
|
646 && child->frameFormat().position() != QTextFrameFormat::InFlow |
|
647 && hitTest(child, relativePoint, position, l, accuracy) == PointExact) |
|
648 { |
|
649 return PointExact; |
|
650 } |
|
651 } |
|
652 |
|
653 QTextFrame::Iterator it = frame->begin(); |
|
654 |
|
655 if (frame == rootFrame) { |
|
656 it = frameIteratorForYPosition(relativePoint.y); |
|
657 |
|
658 Q_ASSERT(it.parentFrame() == frame); |
|
659 } |
|
660 |
|
661 if (it.currentFrame()) |
|
662 *position = it.currentFrame()->firstPosition(); |
|
663 else |
|
664 *position = it.currentBlock().position(); |
|
665 |
|
666 return hitTest(it, PointBefore, relativePoint, position, l, accuracy); |
|
667 } |
|
668 |
|
669 QTextDocumentLayoutPrivate::HitPoint |
|
670 QTextDocumentLayoutPrivate::hitTest(QTextFrame::Iterator it, HitPoint hit, const QFixedPoint &p, |
|
671 int *position, QTextLayout **l, Qt::HitTestAccuracy accuracy) const |
|
672 { |
|
673 INC_INDENT; |
|
674 |
|
675 for (; !it.atEnd(); ++it) { |
|
676 QTextFrame *c = it.currentFrame(); |
|
677 HitPoint hp; |
|
678 int pos = -1; |
|
679 if (c) { |
|
680 hp = hitTest(c, p, &pos, l, accuracy); |
|
681 } else { |
|
682 hp = hitTest(it.currentBlock(), p, &pos, l, accuracy); |
|
683 } |
|
684 if (hp >= PointInside) { |
|
685 if (isEmptyBlockBeforeTable(it)) |
|
686 continue; |
|
687 hit = hp; |
|
688 *position = pos; |
|
689 break; |
|
690 } |
|
691 if (hp == PointBefore && pos < *position) { |
|
692 *position = pos; |
|
693 hit = hp; |
|
694 } else if (hp == PointAfter && pos > *position) { |
|
695 *position = pos; |
|
696 hit = hp; |
|
697 } |
|
698 } |
|
699 |
|
700 DEC_INDENT; |
|
701 // LDEBUG << "inside=" << hit << " pos=" << *position; |
|
702 return hit; |
|
703 } |
|
704 |
|
705 QTextDocumentLayoutPrivate::HitPoint |
|
706 QTextDocumentLayoutPrivate::hitTest(QTextTable *table, const QFixedPoint &point, |
|
707 int *position, QTextLayout **l, Qt::HitTestAccuracy accuracy) const |
|
708 { |
|
709 QTextTableData *td = static_cast<QTextTableData *>(data(table)); |
|
710 |
|
711 QVector<QFixed>::ConstIterator rowIt = qLowerBound(td->rowPositions.constBegin(), td->rowPositions.constEnd(), point.y); |
|
712 if (rowIt == td->rowPositions.constEnd()) { |
|
713 rowIt = td->rowPositions.constEnd() - 1; |
|
714 } else if (rowIt != td->rowPositions.constBegin()) { |
|
715 --rowIt; |
|
716 } |
|
717 |
|
718 QVector<QFixed>::ConstIterator colIt = qLowerBound(td->columnPositions.constBegin(), td->columnPositions.constEnd(), point.x); |
|
719 if (colIt == td->columnPositions.constEnd()) { |
|
720 colIt = td->columnPositions.constEnd() - 1; |
|
721 } else if (colIt != td->columnPositions.constBegin()) { |
|
722 --colIt; |
|
723 } |
|
724 |
|
725 QTextTableCell cell = table->cellAt(rowIt - td->rowPositions.constBegin(), |
|
726 colIt - td->columnPositions.constBegin()); |
|
727 if (!cell.isValid()) |
|
728 return PointBefore; |
|
729 |
|
730 *position = cell.firstPosition(); |
|
731 |
|
732 HitPoint hp = hitTest(cell.begin(), PointInside, point - td->cellPosition(cell), position, l, accuracy); |
|
733 |
|
734 if (hp == PointExact) |
|
735 return hp; |
|
736 if (hp == PointAfter) |
|
737 *position = cell.lastPosition(); |
|
738 return PointInside; |
|
739 } |
|
740 |
|
741 QTextDocumentLayoutPrivate::HitPoint |
|
742 QTextDocumentLayoutPrivate::hitTest(QTextBlock bl, const QFixedPoint &point, int *position, QTextLayout **l, |
|
743 Qt::HitTestAccuracy accuracy) const |
|
744 { |
|
745 QTextLayout *tl = bl.layout(); |
|
746 QRectF textrect = tl->boundingRect(); |
|
747 textrect.translate(tl->position()); |
|
748 // LDEBUG << " checking block" << bl.position() << "point=" << point |
|
749 // << " tlrect" << textrect; |
|
750 *position = bl.position(); |
|
751 if (point.y.toReal() < textrect.top()) { |
|
752 // LDEBUG << " before pos=" << *position; |
|
753 return PointBefore; |
|
754 } else if (point.y.toReal() > textrect.bottom()) { |
|
755 *position += bl.length(); |
|
756 // LDEBUG << " after pos=" << *position; |
|
757 return PointAfter; |
|
758 } |
|
759 |
|
760 QPointF pos = point.toPointF() - tl->position(); |
|
761 |
|
762 // ### rtl? |
|
763 |
|
764 HitPoint hit = PointInside; |
|
765 *l = tl; |
|
766 int off = 0; |
|
767 for (int i = 0; i < tl->lineCount(); ++i) { |
|
768 QTextLine line = tl->lineAt(i); |
|
769 const QRectF lr = line.naturalTextRect(); |
|
770 if (lr.top() > pos.y()) { |
|
771 off = qMin(off, line.textStart()); |
|
772 } else if (lr.bottom() <= pos.y()) { |
|
773 off = qMax(off, line.textStart() + line.textLength()); |
|
774 } else { |
|
775 if (lr.left() <= pos.x() && lr.right() >= pos.x()) |
|
776 hit = PointExact; |
|
777 // when trying to hit an anchor we want it to hit not only in the left |
|
778 // half |
|
779 if (accuracy == Qt::ExactHit) |
|
780 off = line.xToCursor(pos.x(), QTextLine::CursorOnCharacter); |
|
781 else |
|
782 off = line.xToCursor(pos.x(), QTextLine::CursorBetweenCharacters); |
|
783 break; |
|
784 } |
|
785 } |
|
786 *position += off; |
|
787 |
|
788 // LDEBUG << " inside=" << hit << " pos=" << *position; |
|
789 return hit; |
|
790 } |
|
791 |
|
792 // ### could be moved to QTextBlock |
|
793 QFixed QTextDocumentLayoutPrivate::blockIndent(const QTextBlockFormat &blockFormat) const |
|
794 { |
|
795 qreal indent = blockFormat.indent(); |
|
796 |
|
797 QTextObject *object = document->objectForFormat(blockFormat); |
|
798 if (object) |
|
799 indent += object->format().toListFormat().indent(); |
|
800 |
|
801 if (qIsNull(indent)) |
|
802 return 0; |
|
803 |
|
804 qreal scale = 1; |
|
805 if (paintDevice) { |
|
806 scale = qreal(paintDevice->logicalDpiY()) / qreal(qt_defaultDpi()); |
|
807 } |
|
808 |
|
809 return QFixed::fromReal(indent * scale * document->indentWidth()); |
|
810 } |
|
811 |
|
812 void QTextDocumentLayoutPrivate::drawBorder(QPainter *painter, const QRectF &rect, qreal topMargin, qreal bottomMargin, |
|
813 qreal border, const QBrush &brush, QTextFrameFormat::BorderStyle style) const |
|
814 { |
|
815 const qreal pageHeight = document->pageSize().height(); |
|
816 const int topPage = pageHeight > 0 ? static_cast<int>(rect.top() / pageHeight) : 0; |
|
817 const int bottomPage = pageHeight > 0 ? static_cast<int>((rect.bottom() + border) / pageHeight) : 0; |
|
818 |
|
819 #ifndef QT_NO_CSSPARSER |
|
820 QCss::BorderStyle cssStyle = static_cast<QCss::BorderStyle>(style + 1); |
|
821 #endif //QT_NO_CSSPARSER |
|
822 |
|
823 bool turn_off_antialiasing = !(painter->renderHints() & QPainter::Antialiasing); |
|
824 painter->setRenderHint(QPainter::Antialiasing); |
|
825 |
|
826 for (int i = topPage; i <= bottomPage; ++i) { |
|
827 QRectF clipped = rect.toRect(); |
|
828 |
|
829 if (topPage != bottomPage) { |
|
830 clipped.setTop(qMax(clipped.top(), i * pageHeight + topMargin - border)); |
|
831 clipped.setBottom(qMin(clipped.bottom(), (i + 1) * pageHeight - bottomMargin)); |
|
832 |
|
833 if (clipped.bottom() <= clipped.top()) |
|
834 continue; |
|
835 } |
|
836 #ifndef QT_NO_CSSPARSER |
|
837 qDrawEdge(painter, clipped.left(), clipped.top(), clipped.left() + border, clipped.bottom() + border, 0, 0, QCss::LeftEdge, cssStyle, brush); |
|
838 qDrawEdge(painter, clipped.left() + border, clipped.top(), clipped.right() + border, clipped.top() + border, 0, 0, QCss::TopEdge, cssStyle, brush); |
|
839 qDrawEdge(painter, clipped.right(), clipped.top() + border, clipped.right() + border, clipped.bottom(), 0, 0, QCss::RightEdge, cssStyle, brush); |
|
840 qDrawEdge(painter, clipped.left() + border, clipped.bottom(), clipped.right() + border, clipped.bottom() + border, 0, 0, QCss::BottomEdge, cssStyle, brush); |
|
841 #else |
|
842 painter->save(); |
|
843 painter->setPen(Qt::NoPen); |
|
844 painter->setBrush(brush); |
|
845 painter->drawRect(QRectF(clipped.left(), clipped.top(), clipped.left() + border, clipped.bottom() + border)); |
|
846 painter->drawRect(QRectF(clipped.left() + border, clipped.top(), clipped.right() + border, clipped.top() + border)); |
|
847 painter->drawRect(QRectF(clipped.right(), clipped.top() + border, clipped.right() + border, clipped.bottom())); |
|
848 painter->drawRect(QRectF(clipped.left() + border, clipped.bottom(), clipped.right() + border, clipped.bottom() + border)); |
|
849 painter->restore(); |
|
850 #endif //QT_NO_CSSPARSER |
|
851 } |
|
852 if (turn_off_antialiasing) |
|
853 painter->setRenderHint(QPainter::Antialiasing, false); |
|
854 } |
|
855 |
|
856 void QTextDocumentLayoutPrivate::drawFrameDecoration(QPainter *painter, QTextFrame *frame, QTextFrameData *fd, const QRectF &clip, const QRectF &rect) const |
|
857 { |
|
858 |
|
859 const QBrush bg = frame->frameFormat().background(); |
|
860 if (bg != Qt::NoBrush) { |
|
861 QRectF bgRect = rect; |
|
862 bgRect.adjust((fd->leftMargin + fd->border).toReal(), |
|
863 (fd->topMargin + fd->border).toReal(), |
|
864 - (fd->rightMargin + fd->border).toReal(), |
|
865 - (fd->bottomMargin + fd->border).toReal()); |
|
866 |
|
867 QRectF gradientRect; // invalid makes it default to bgRect |
|
868 QPointF origin = bgRect.topLeft(); |
|
869 if (!frame->parentFrame()) { |
|
870 bgRect = clip; |
|
871 gradientRect.setWidth(painter->device()->width()); |
|
872 gradientRect.setHeight(painter->device()->height()); |
|
873 } |
|
874 fillBackground(painter, bgRect, bg, origin, gradientRect); |
|
875 } |
|
876 if (fd->border != 0) { |
|
877 painter->save(); |
|
878 painter->setBrush(Qt::lightGray); |
|
879 painter->setPen(Qt::NoPen); |
|
880 |
|
881 const qreal leftEdge = rect.left() + fd->leftMargin.toReal(); |
|
882 const qreal border = fd->border.toReal(); |
|
883 const qreal topMargin = fd->topMargin.toReal(); |
|
884 const qreal leftMargin = fd->leftMargin.toReal(); |
|
885 const qreal bottomMargin = fd->bottomMargin.toReal(); |
|
886 const qreal rightMargin = fd->rightMargin.toReal(); |
|
887 const qreal w = rect.width() - 2 * border - leftMargin - rightMargin; |
|
888 const qreal h = rect.height() - 2 * border - topMargin - bottomMargin; |
|
889 |
|
890 drawBorder(painter, QRectF(leftEdge, rect.top() + topMargin, w + border, h + border), |
|
891 fd->effectiveTopMargin.toReal(), fd->effectiveBottomMargin.toReal(), |
|
892 border, frame->frameFormat().borderBrush(), frame->frameFormat().borderStyle()); |
|
893 |
|
894 painter->restore(); |
|
895 } |
|
896 } |
|
897 |
|
898 static void adjustContextSelectionsForCell(QAbstractTextDocumentLayout::PaintContext &cell_context, |
|
899 const QTextTableCell &cell, |
|
900 int r, int c, |
|
901 const int *selectedTableCells) |
|
902 { |
|
903 for (int i = 0; i < cell_context.selections.size(); ++i) { |
|
904 int row_start = selectedTableCells[i * 4]; |
|
905 int col_start = selectedTableCells[i * 4 + 1]; |
|
906 int num_rows = selectedTableCells[i * 4 + 2]; |
|
907 int num_cols = selectedTableCells[i * 4 + 3]; |
|
908 |
|
909 if (row_start != -1) { |
|
910 if (r >= row_start && r < row_start + num_rows |
|
911 && c >= col_start && c < col_start + num_cols) |
|
912 { |
|
913 int firstPosition = cell.firstPosition(); |
|
914 int lastPosition = cell.lastPosition(); |
|
915 |
|
916 // make sure empty cells are still selected |
|
917 if (firstPosition == lastPosition) |
|
918 ++lastPosition; |
|
919 |
|
920 cell_context.selections[i].cursor.setPosition(firstPosition); |
|
921 cell_context.selections[i].cursor.setPosition(lastPosition, QTextCursor::KeepAnchor); |
|
922 } else { |
|
923 cell_context.selections[i].cursor.clearSelection(); |
|
924 } |
|
925 } |
|
926 |
|
927 // FullWidthSelection is not useful for tables |
|
928 cell_context.selections[i].format.clearProperty(QTextFormat::FullWidthSelection); |
|
929 } |
|
930 } |
|
931 |
|
932 void QTextDocumentLayoutPrivate::drawFrame(const QPointF &offset, QPainter *painter, |
|
933 const QAbstractTextDocumentLayout::PaintContext &context, |
|
934 QTextFrame *frame) const |
|
935 { |
|
936 QTextFrameData *fd = data(frame); |
|
937 // ####### |
|
938 if (fd->layoutDirty) |
|
939 return; |
|
940 Q_ASSERT(!fd->sizeDirty); |
|
941 Q_ASSERT(!fd->layoutDirty); |
|
942 |
|
943 const QPointF off = offset + fd->position.toPointF(); |
|
944 if (context.clip.isValid() |
|
945 && (off.y() > context.clip.bottom() || off.y() + fd->size.height.toReal() < context.clip.top() |
|
946 || off.x() > context.clip.right() || off.x() + fd->size.width.toReal() < context.clip.left())) |
|
947 return; |
|
948 |
|
949 // LDEBUG << debug_indent << "drawFrame" << frame->firstPosition() << "--" << frame->lastPosition() << "at" << offset; |
|
950 // INC_INDENT; |
|
951 |
|
952 // if the cursor is /on/ a table border we may need to repaint it |
|
953 // afterwards, as we usually draw the decoration first |
|
954 QTextBlock cursorBlockNeedingRepaint; |
|
955 QPointF offsetOfRepaintedCursorBlock = off; |
|
956 |
|
957 QTextTable *table = qobject_cast<QTextTable *>(frame); |
|
958 const QRectF frameRect(off, fd->size.toSizeF()); |
|
959 |
|
960 if (table) { |
|
961 const int rows = table->rows(); |
|
962 const int columns = table->columns(); |
|
963 QTextTableData *td = static_cast<QTextTableData *>(data(table)); |
|
964 |
|
965 QVarLengthArray<int> selectedTableCells(context.selections.size() * 4); |
|
966 for (int i = 0; i < context.selections.size(); ++i) { |
|
967 const QAbstractTextDocumentLayout::Selection &s = context.selections.at(i); |
|
968 int row_start = -1, col_start = -1, num_rows = -1, num_cols = -1; |
|
969 |
|
970 if (s.cursor.currentTable() == table) |
|
971 s.cursor.selectedTableCells(&row_start, &num_rows, &col_start, &num_cols); |
|
972 |
|
973 selectedTableCells[i * 4] = row_start; |
|
974 selectedTableCells[i * 4 + 1] = col_start; |
|
975 selectedTableCells[i * 4 + 2] = num_rows; |
|
976 selectedTableCells[i * 4 + 3] = num_cols; |
|
977 } |
|
978 |
|
979 QFixed pageHeight = QFixed::fromReal(document->pageSize().height()); |
|
980 if (pageHeight <= 0) |
|
981 pageHeight = QFIXED_MAX; |
|
982 |
|
983 const int tableStartPage = (td->position.y / pageHeight).truncate(); |
|
984 const int tableEndPage = ((td->position.y + td->size.height) / pageHeight).truncate(); |
|
985 |
|
986 qreal border = td->border.toReal(); |
|
987 drawFrameDecoration(painter, frame, fd, context.clip, frameRect); |
|
988 |
|
989 // draw the table headers |
|
990 const int headerRowCount = qMin(table->format().headerRowCount(), rows - 1); |
|
991 int page = tableStartPage + 1; |
|
992 while (page <= tableEndPage) { |
|
993 const QFixed pageTop = page * pageHeight + td->effectiveTopMargin + td->cellSpacing + td->border; |
|
994 const qreal headerOffset = (pageTop - td->rowPositions.at(0)).toReal(); |
|
995 for (int r = 0; r < headerRowCount; ++r) { |
|
996 for (int c = 0; c < columns; ++c) { |
|
997 QTextTableCell cell = table->cellAt(r, c); |
|
998 QAbstractTextDocumentLayout::PaintContext cell_context = context; |
|
999 adjustContextSelectionsForCell(cell_context, cell, r, c, selectedTableCells.data()); |
|
1000 QRectF cellRect = td->cellRect(cell); |
|
1001 |
|
1002 cellRect.translate(off.x(), headerOffset); |
|
1003 // we need to account for the cell border in the clipping test |
|
1004 int leftAdjust = qMin(qreal(0), 1 - border); |
|
1005 if (cell_context.clip.isValid() && !cellRect.adjusted(leftAdjust, leftAdjust, border, border).intersects(cell_context.clip)) |
|
1006 continue; |
|
1007 |
|
1008 drawTableCell(cellRect, painter, cell_context, table, td, r, c, &cursorBlockNeedingRepaint, |
|
1009 &offsetOfRepaintedCursorBlock); |
|
1010 } |
|
1011 } |
|
1012 ++page; |
|
1013 } |
|
1014 |
|
1015 int firstRow = 0; |
|
1016 int lastRow = rows; |
|
1017 |
|
1018 if (context.clip.isValid()) { |
|
1019 QVector<QFixed>::ConstIterator rowIt = qLowerBound(td->rowPositions.constBegin(), td->rowPositions.constEnd(), QFixed::fromReal(context.clip.top() - off.y())); |
|
1020 if (rowIt != td->rowPositions.constEnd() && rowIt != td->rowPositions.constBegin()) { |
|
1021 --rowIt; |
|
1022 firstRow = rowIt - td->rowPositions.constBegin(); |
|
1023 } |
|
1024 |
|
1025 rowIt = qUpperBound(td->rowPositions.constBegin(), td->rowPositions.constEnd(), QFixed::fromReal(context.clip.bottom() - off.y())); |
|
1026 if (rowIt != td->rowPositions.constEnd()) { |
|
1027 ++rowIt; |
|
1028 lastRow = rowIt - td->rowPositions.constBegin(); |
|
1029 } |
|
1030 } |
|
1031 |
|
1032 for (int c = 0; c < columns; ++c) { |
|
1033 QTextTableCell cell = table->cellAt(firstRow, c); |
|
1034 firstRow = qMin(firstRow, cell.row()); |
|
1035 } |
|
1036 |
|
1037 for (int r = firstRow; r < lastRow; ++r) { |
|
1038 for (int c = 0; c < columns; ++c) { |
|
1039 QTextTableCell cell = table->cellAt(r, c); |
|
1040 QAbstractTextDocumentLayout::PaintContext cell_context = context; |
|
1041 adjustContextSelectionsForCell(cell_context, cell, r, c, selectedTableCells.data()); |
|
1042 QRectF cellRect = td->cellRect(cell); |
|
1043 |
|
1044 cellRect.translate(off); |
|
1045 // we need to account for the cell border in the clipping test |
|
1046 int leftAdjust = qMin(qreal(0), 1 - border); |
|
1047 if (cell_context.clip.isValid() && !cellRect.adjusted(leftAdjust, leftAdjust, border, border).intersects(cell_context.clip)) |
|
1048 continue; |
|
1049 |
|
1050 drawTableCell(cellRect, painter, cell_context, table, td, r, c, &cursorBlockNeedingRepaint, |
|
1051 &offsetOfRepaintedCursorBlock); |
|
1052 } |
|
1053 } |
|
1054 |
|
1055 } else { |
|
1056 drawFrameDecoration(painter, frame, fd, context.clip, frameRect); |
|
1057 |
|
1058 QTextFrame::Iterator it = frame->begin(); |
|
1059 |
|
1060 if (frame == docPrivate->rootFrame()) |
|
1061 it = frameIteratorForYPosition(QFixed::fromReal(context.clip.top())); |
|
1062 |
|
1063 QList<QTextFrame *> floats; |
|
1064 for (int i = 0; i < fd->floats.count(); ++i) |
|
1065 floats.append(fd->floats.at(i)); |
|
1066 |
|
1067 drawFlow(off, painter, context, it, floats, &cursorBlockNeedingRepaint); |
|
1068 } |
|
1069 |
|
1070 if (cursorBlockNeedingRepaint.isValid()) { |
|
1071 const QPen oldPen = painter->pen(); |
|
1072 painter->setPen(context.palette.color(QPalette::Text)); |
|
1073 const int cursorPos = context.cursorPosition - cursorBlockNeedingRepaint.position(); |
|
1074 cursorBlockNeedingRepaint.layout()->drawCursor(painter, offsetOfRepaintedCursorBlock, |
|
1075 cursorPos, cursorWidth); |
|
1076 painter->setPen(oldPen); |
|
1077 } |
|
1078 |
|
1079 // DEC_INDENT; |
|
1080 |
|
1081 return; |
|
1082 } |
|
1083 |
|
1084 void QTextDocumentLayoutPrivate::drawTableCell(const QRectF &cellRect, QPainter *painter, const QAbstractTextDocumentLayout::PaintContext &cell_context, |
|
1085 QTextTable *table, QTextTableData *td, int r, int c, |
|
1086 QTextBlock *cursorBlockNeedingRepaint, QPointF *cursorBlockOffset) const |
|
1087 { |
|
1088 QTextTableCell cell = table->cellAt(r, c); |
|
1089 int rspan = cell.rowSpan(); |
|
1090 int cspan = cell.columnSpan(); |
|
1091 if (rspan != 1) { |
|
1092 int cr = cell.row(); |
|
1093 if (cr != r) |
|
1094 return; |
|
1095 } |
|
1096 if (cspan != 1) { |
|
1097 int cc = cell.column(); |
|
1098 if (cc != c) |
|
1099 return; |
|
1100 } |
|
1101 |
|
1102 QTextFormat fmt = cell.format(); |
|
1103 const QFixed leftPadding = td->leftPadding(fmt); |
|
1104 const QFixed topPadding = td->topPadding(fmt); |
|
1105 |
|
1106 if (td->border != 0) { |
|
1107 const QBrush oldBrush = painter->brush(); |
|
1108 const QPen oldPen = painter->pen(); |
|
1109 |
|
1110 const qreal border = td->border.toReal(); |
|
1111 |
|
1112 QRectF borderRect(cellRect.left() - border, cellRect.top() - border, cellRect.width() + border, cellRect.height() + border); |
|
1113 |
|
1114 // invert the border style for cells |
|
1115 QTextFrameFormat::BorderStyle cellBorder = table->format().borderStyle(); |
|
1116 switch (cellBorder) { |
|
1117 case QTextFrameFormat::BorderStyle_Inset: |
|
1118 cellBorder = QTextFrameFormat::BorderStyle_Outset; |
|
1119 break; |
|
1120 case QTextFrameFormat::BorderStyle_Outset: |
|
1121 cellBorder = QTextFrameFormat::BorderStyle_Inset; |
|
1122 break; |
|
1123 case QTextFrameFormat::BorderStyle_Groove: |
|
1124 cellBorder = QTextFrameFormat::BorderStyle_Ridge; |
|
1125 break; |
|
1126 case QTextFrameFormat::BorderStyle_Ridge: |
|
1127 cellBorder = QTextFrameFormat::BorderStyle_Groove; |
|
1128 break; |
|
1129 default: |
|
1130 break; |
|
1131 } |
|
1132 |
|
1133 qreal topMargin = (td->effectiveTopMargin + td->cellSpacing + td->border).toReal(); |
|
1134 qreal bottomMargin = (td->effectiveBottomMargin + td->cellSpacing + td->border).toReal(); |
|
1135 |
|
1136 const int headerRowCount = qMin(table->format().headerRowCount(), table->rows() - 1); |
|
1137 if (r >= headerRowCount) |
|
1138 topMargin += td->headerHeight.toReal(); |
|
1139 |
|
1140 drawBorder(painter, borderRect, topMargin, bottomMargin, |
|
1141 border, table->format().borderBrush(), cellBorder); |
|
1142 |
|
1143 painter->setBrush(oldBrush); |
|
1144 painter->setPen(oldPen); |
|
1145 } |
|
1146 |
|
1147 const QBrush bg = cell.format().background(); |
|
1148 const QPointF brushOrigin = painter->brushOrigin(); |
|
1149 if (bg.style() != Qt::NoBrush) { |
|
1150 fillBackground(painter, cellRect, bg, cellRect.topLeft()); |
|
1151 |
|
1152 if (bg.style() > Qt::SolidPattern) |
|
1153 painter->setBrushOrigin(cellRect.topLeft()); |
|
1154 } |
|
1155 |
|
1156 const QFixed verticalOffset = td->cellVerticalOffsets.at(c + r * table->columns()); |
|
1157 |
|
1158 const QPointF cellPos = QPointF(cellRect.left() + leftPadding.toReal(), |
|
1159 cellRect.top() + (topPadding + verticalOffset).toReal()); |
|
1160 |
|
1161 QTextBlock repaintBlock; |
|
1162 drawFlow(cellPos, painter, cell_context, cell.begin(), |
|
1163 td->childFrameMap.values(r + c * table->rows()), |
|
1164 &repaintBlock); |
|
1165 if (repaintBlock.isValid()) { |
|
1166 *cursorBlockNeedingRepaint = repaintBlock; |
|
1167 *cursorBlockOffset = cellPos; |
|
1168 } |
|
1169 |
|
1170 if (bg.style() > Qt::SolidPattern) |
|
1171 painter->setBrushOrigin(brushOrigin); |
|
1172 } |
|
1173 |
|
1174 void QTextDocumentLayoutPrivate::drawFlow(const QPointF &offset, QPainter *painter, const QAbstractTextDocumentLayout::PaintContext &context, |
|
1175 QTextFrame::Iterator it, const QList<QTextFrame *> &floats, QTextBlock *cursorBlockNeedingRepaint) const |
|
1176 { |
|
1177 Q_Q(const QTextDocumentLayout); |
|
1178 const bool inRootFrame = (!it.atEnd() && it.parentFrame() && it.parentFrame()->parentFrame() == 0); |
|
1179 |
|
1180 QVector<QCheckPoint>::ConstIterator lastVisibleCheckPoint = checkPoints.end(); |
|
1181 if (inRootFrame && context.clip.isValid()) { |
|
1182 lastVisibleCheckPoint = qLowerBound(checkPoints.begin(), checkPoints.end(), QFixed::fromReal(context.clip.bottom())); |
|
1183 } |
|
1184 |
|
1185 QTextBlock previousBlock; |
|
1186 QTextFrame *previousFrame = 0; |
|
1187 |
|
1188 for (; !it.atEnd(); ++it) { |
|
1189 QTextFrame *c = it.currentFrame(); |
|
1190 |
|
1191 if (inRootFrame && !checkPoints.isEmpty()) { |
|
1192 int currentPosInDoc; |
|
1193 if (c) |
|
1194 currentPosInDoc = c->firstPosition(); |
|
1195 else |
|
1196 currentPosInDoc = it.currentBlock().position(); |
|
1197 |
|
1198 // if we're past what is already laid out then we're better off |
|
1199 // not trying to draw things that may not be positioned correctly yet |
|
1200 if (currentPosInDoc >= checkPoints.last().positionInFrame) |
|
1201 break; |
|
1202 |
|
1203 if (lastVisibleCheckPoint != checkPoints.end() |
|
1204 && context.clip.isValid() |
|
1205 && currentPosInDoc >= lastVisibleCheckPoint->positionInFrame |
|
1206 ) |
|
1207 break; |
|
1208 } |
|
1209 |
|
1210 if (c) |
|
1211 drawFrame(offset, painter, context, c); |
|
1212 else { |
|
1213 QAbstractTextDocumentLayout::PaintContext pc = context; |
|
1214 if (isEmptyBlockAfterTable(it.currentBlock(), previousFrame)) |
|
1215 pc.selections.clear(); |
|
1216 drawBlock(offset, painter, pc, it.currentBlock(), inRootFrame); |
|
1217 } |
|
1218 |
|
1219 // when entering a table and the previous block is empty |
|
1220 // then layoutFlow 'hides' the block that just causes a |
|
1221 // new line by positioning it /on/ the table border. as we |
|
1222 // draw that block before the table itself the decoration |
|
1223 // 'overpaints' the cursor and we need to paint it afterwards |
|
1224 // again |
|
1225 if (isEmptyBlockBeforeTable(previousBlock, previousBlock.blockFormat(), it) |
|
1226 && previousBlock.contains(context.cursorPosition) |
|
1227 ) { |
|
1228 *cursorBlockNeedingRepaint = previousBlock; |
|
1229 } |
|
1230 |
|
1231 previousBlock = it.currentBlock(); |
|
1232 previousFrame = c; |
|
1233 } |
|
1234 |
|
1235 for (int i = 0; i < floats.count(); ++i) { |
|
1236 QTextFrame *frame = floats.at(i); |
|
1237 if (!isFrameFromInlineObject(frame) |
|
1238 || frame->frameFormat().position() == QTextFrameFormat::InFlow) |
|
1239 continue; |
|
1240 |
|
1241 const int pos = frame->firstPosition() - 1; |
|
1242 QTextCharFormat format = const_cast<QTextDocumentLayout *>(q)->format(pos); |
|
1243 QTextObjectInterface *handler = q->handlerForObject(format.objectType()); |
|
1244 if (handler) { |
|
1245 QRectF rect = frameBoundingRectInternal(frame); |
|
1246 handler->drawObject(painter, rect, document, pos, format); |
|
1247 } |
|
1248 } |
|
1249 } |
|
1250 |
|
1251 void QTextDocumentLayoutPrivate::drawBlock(const QPointF &offset, QPainter *painter, |
|
1252 const QAbstractTextDocumentLayout::PaintContext &context, |
|
1253 QTextBlock bl, bool inRootFrame) const |
|
1254 { |
|
1255 const QTextLayout *tl = bl.layout(); |
|
1256 QRectF r = tl->boundingRect(); |
|
1257 r.translate(offset + tl->position()); |
|
1258 if (context.clip.isValid() && (r.bottom() < context.clip.y() || r.top() > context.clip.bottom())) |
|
1259 return; |
|
1260 // LDEBUG << debug_indent << "drawBlock" << bl.position() << "at" << offset << "br" << tl->boundingRect(); |
|
1261 |
|
1262 QTextBlockFormat blockFormat = bl.blockFormat(); |
|
1263 |
|
1264 QBrush bg = blockFormat.background(); |
|
1265 if (bg != Qt::NoBrush) { |
|
1266 QRectF rect = r; |
|
1267 |
|
1268 // extend the background rectangle if we're in the root frame with NoWrap, |
|
1269 // as the rect of the text block will then be only the width of the text |
|
1270 // instead of the full page width |
|
1271 if (inRootFrame && document->pageSize().width() <= 0) { |
|
1272 const QTextFrameData *fd = data(document->rootFrame()); |
|
1273 rect.setRight((fd->size.width - fd->rightMargin).toReal()); |
|
1274 } |
|
1275 |
|
1276 fillBackground(painter, rect, bg, r.topLeft()); |
|
1277 } |
|
1278 |
|
1279 QVector<QTextLayout::FormatRange> selections; |
|
1280 int blpos = bl.position(); |
|
1281 int bllen = bl.length(); |
|
1282 const QTextCharFormat *selFormat = 0; |
|
1283 for (int i = 0; i < context.selections.size(); ++i) { |
|
1284 const QAbstractTextDocumentLayout::Selection &range = context.selections.at(i); |
|
1285 const int selStart = range.cursor.selectionStart() - blpos; |
|
1286 const int selEnd = range.cursor.selectionEnd() - blpos; |
|
1287 if (selStart < bllen && selEnd > 0 |
|
1288 && selEnd > selStart) { |
|
1289 QTextLayout::FormatRange o; |
|
1290 o.start = selStart; |
|
1291 o.length = selEnd - selStart; |
|
1292 o.format = range.format; |
|
1293 selections.append(o); |
|
1294 } else if (! range.cursor.hasSelection() && range.format.hasProperty(QTextFormat::FullWidthSelection) |
|
1295 && bl.contains(range.cursor.position())) { |
|
1296 // for full width selections we don't require an actual selection, just |
|
1297 // a position to specify the line. that's more convenience in usage. |
|
1298 QTextLayout::FormatRange o; |
|
1299 QTextLine l = tl->lineForTextPosition(range.cursor.position() - blpos); |
|
1300 o.start = l.textStart(); |
|
1301 o.length = l.textLength(); |
|
1302 if (o.start + o.length == bllen - 1) |
|
1303 ++o.length; // include newline |
|
1304 o.format = range.format; |
|
1305 selections.append(o); |
|
1306 } |
|
1307 if (selStart < 0 && selEnd >= 1) |
|
1308 selFormat = &range.format; |
|
1309 } |
|
1310 |
|
1311 QTextObject *object = document->objectForFormat(bl.blockFormat()); |
|
1312 if (object && object->format().toListFormat().style() != QTextListFormat::ListStyleUndefined) |
|
1313 drawListItem(offset, painter, context, bl, selFormat); |
|
1314 |
|
1315 QPen oldPen = painter->pen(); |
|
1316 painter->setPen(context.palette.color(QPalette::Text)); |
|
1317 |
|
1318 tl->draw(painter, offset, selections, context.clip.isValid() ? (context.clip & clipRect) : clipRect); |
|
1319 |
|
1320 if ((context.cursorPosition >= blpos && context.cursorPosition < blpos + bllen) |
|
1321 || (context.cursorPosition < -1 && !tl->preeditAreaText().isEmpty())) { |
|
1322 int cpos = context.cursorPosition; |
|
1323 if (cpos < -1) |
|
1324 cpos = tl->preeditAreaPosition() - (cpos + 2); |
|
1325 else |
|
1326 cpos -= blpos; |
|
1327 tl->drawCursor(painter, offset, cpos, cursorWidth); |
|
1328 } |
|
1329 |
|
1330 if (blockFormat.hasProperty(QTextFormat::BlockTrailingHorizontalRulerWidth)) { |
|
1331 const qreal width = blockFormat.lengthProperty(QTextFormat::BlockTrailingHorizontalRulerWidth).value(r.width()); |
|
1332 painter->setPen(context.palette.color(QPalette::Dark)); |
|
1333 qreal y = r.bottom(); |
|
1334 if (bl.length() == 1) |
|
1335 y = r.top() + r.height() / 2; |
|
1336 |
|
1337 const qreal middleX = r.left() + r.width() / 2; |
|
1338 painter->drawLine(QLineF(middleX - width / 2, y, middleX + width / 2, y)); |
|
1339 } |
|
1340 |
|
1341 painter->setPen(oldPen); |
|
1342 } |
|
1343 |
|
1344 |
|
1345 void QTextDocumentLayoutPrivate::drawListItem(const QPointF &offset, QPainter *painter, |
|
1346 const QAbstractTextDocumentLayout::PaintContext &context, |
|
1347 QTextBlock bl, const QTextCharFormat *selectionFormat) const |
|
1348 { |
|
1349 Q_Q(const QTextDocumentLayout); |
|
1350 const QTextBlockFormat blockFormat = bl.blockFormat(); |
|
1351 const QTextCharFormat charFormat = QTextCursor(bl).charFormat(); |
|
1352 QFont font(charFormat.font()); |
|
1353 if (q->paintDevice()) |
|
1354 font = QFont(font, q->paintDevice()); |
|
1355 |
|
1356 const QFontMetrics fontMetrics(font); |
|
1357 QTextObject * const object = document->objectForFormat(blockFormat); |
|
1358 const QTextListFormat lf = object->format().toListFormat(); |
|
1359 int style = lf.style(); |
|
1360 QString itemText; |
|
1361 QSizeF size; |
|
1362 |
|
1363 if (blockFormat.hasProperty(QTextFormat::ListStyle)) |
|
1364 style = QTextListFormat::Style(blockFormat.intProperty(QTextFormat::ListStyle)); |
|
1365 |
|
1366 QTextLayout *layout = bl.layout(); |
|
1367 if (layout->lineCount() == 0) |
|
1368 return; |
|
1369 QTextLine firstLine = layout->lineAt(0); |
|
1370 Q_ASSERT(firstLine.isValid()); |
|
1371 QPointF pos = (offset + layout->position()).toPoint(); |
|
1372 Qt::LayoutDirection dir = docPrivate->defaultTextOption.textDirection(); |
|
1373 if (blockFormat.hasProperty(QTextFormat::LayoutDirection)) |
|
1374 dir = blockFormat.layoutDirection(); |
|
1375 { |
|
1376 QRectF textRect = firstLine.naturalTextRect(); |
|
1377 pos += textRect.topLeft().toPoint(); |
|
1378 if (dir == Qt::RightToLeft) |
|
1379 pos.rx() += textRect.width(); |
|
1380 } |
|
1381 |
|
1382 switch (style) { |
|
1383 case QTextListFormat::ListDecimal: |
|
1384 case QTextListFormat::ListLowerAlpha: |
|
1385 case QTextListFormat::ListUpperAlpha: |
|
1386 case QTextListFormat::ListLowerRoman: |
|
1387 case QTextListFormat::ListUpperRoman: |
|
1388 itemText = static_cast<QTextList *>(object)->itemText(bl); |
|
1389 size.setWidth(fontMetrics.width(itemText)); |
|
1390 size.setHeight(fontMetrics.height()); |
|
1391 break; |
|
1392 |
|
1393 case QTextListFormat::ListSquare: |
|
1394 case QTextListFormat::ListCircle: |
|
1395 case QTextListFormat::ListDisc: |
|
1396 size.setWidth(fontMetrics.lineSpacing() / 3); |
|
1397 size.setHeight(size.width()); |
|
1398 break; |
|
1399 |
|
1400 case QTextListFormat::ListStyleUndefined: |
|
1401 return; |
|
1402 default: return; |
|
1403 } |
|
1404 |
|
1405 QRectF r(pos, size); |
|
1406 |
|
1407 qreal xoff = fontMetrics.width(QLatin1Char(' ')); |
|
1408 if (dir == Qt::LeftToRight) |
|
1409 xoff = -xoff - size.width(); |
|
1410 r.translate( xoff, (fontMetrics.height() / 2 - size.height() / 2)); |
|
1411 |
|
1412 painter->save(); |
|
1413 |
|
1414 painter->setRenderHint(QPainter::Antialiasing); |
|
1415 |
|
1416 if (selectionFormat) { |
|
1417 painter->setPen(QPen(selectionFormat->foreground(), 0)); |
|
1418 painter->fillRect(r, selectionFormat->background()); |
|
1419 } else { |
|
1420 QBrush fg = charFormat.foreground(); |
|
1421 if (fg == Qt::NoBrush) |
|
1422 fg = context.palette.text(); |
|
1423 painter->setPen(QPen(fg, 0)); |
|
1424 } |
|
1425 |
|
1426 QBrush brush = context.palette.brush(QPalette::Text); |
|
1427 |
|
1428 switch (style) { |
|
1429 case QTextListFormat::ListDecimal: |
|
1430 case QTextListFormat::ListLowerAlpha: |
|
1431 case QTextListFormat::ListUpperAlpha: |
|
1432 case QTextListFormat::ListLowerRoman: |
|
1433 case QTextListFormat::ListUpperRoman: { |
|
1434 QTextLayout layout(itemText, font, q->paintDevice()); |
|
1435 layout.setCacheEnabled(true); |
|
1436 QTextOption option(Qt::AlignLeft | Qt::AlignAbsolute); |
|
1437 option.setTextDirection(dir); |
|
1438 layout.setTextOption(option); |
|
1439 layout.beginLayout(); |
|
1440 layout.createLine(); |
|
1441 layout.endLayout(); |
|
1442 layout.draw(painter, QPointF(r.left(), pos.y())); |
|
1443 break; |
|
1444 } |
|
1445 case QTextListFormat::ListSquare: |
|
1446 painter->fillRect(r, brush); |
|
1447 break; |
|
1448 case QTextListFormat::ListCircle: |
|
1449 painter->drawEllipse(r); |
|
1450 break; |
|
1451 case QTextListFormat::ListDisc: |
|
1452 painter->setBrush(brush); |
|
1453 painter->setPen(Qt::NoPen); |
|
1454 painter->drawEllipse(r); |
|
1455 painter->setBrush(Qt::NoBrush); |
|
1456 break; |
|
1457 case QTextListFormat::ListStyleUndefined: |
|
1458 break; |
|
1459 default: |
|
1460 break; |
|
1461 } |
|
1462 |
|
1463 painter->restore(); |
|
1464 } |
|
1465 |
|
1466 static QFixed flowPosition(const QTextFrame::iterator it) |
|
1467 { |
|
1468 if (it.atEnd()) |
|
1469 return 0; |
|
1470 |
|
1471 if (it.currentFrame()) { |
|
1472 return data(it.currentFrame())->position.y; |
|
1473 } else { |
|
1474 QTextBlock block = it.currentBlock(); |
|
1475 QTextLayout *layout = block.layout(); |
|
1476 if (layout->lineCount() == 0) |
|
1477 return QFixed::fromReal(layout->position().y()); |
|
1478 else |
|
1479 return QFixed::fromReal(layout->position().y() + layout->lineAt(0).y()); |
|
1480 } |
|
1481 } |
|
1482 |
|
1483 static QFixed firstChildPos(const QTextFrame *f) |
|
1484 { |
|
1485 return flowPosition(f->begin()); |
|
1486 } |
|
1487 |
|
1488 QLayoutStruct QTextDocumentLayoutPrivate::layoutCell(QTextTable *t, const QTextTableCell &cell, QFixed width, |
|
1489 int layoutFrom, int layoutTo, QTextTableData *td, |
|
1490 QFixed absoluteTableY, bool withPageBreaks) |
|
1491 { |
|
1492 LDEBUG << "layoutCell"; |
|
1493 QLayoutStruct layoutStruct; |
|
1494 layoutStruct.frame = t; |
|
1495 layoutStruct.minimumWidth = 0; |
|
1496 layoutStruct.maximumWidth = QFIXED_MAX; |
|
1497 layoutStruct.y = 0; |
|
1498 |
|
1499 const QTextFormat fmt = cell.format(); |
|
1500 const QFixed topPadding = td->topPadding(fmt); |
|
1501 if (withPageBreaks) { |
|
1502 layoutStruct.frameY = absoluteTableY + td->rowPositions.at(cell.row()) + topPadding; |
|
1503 } |
|
1504 layoutStruct.x_left = 0; |
|
1505 layoutStruct.x_right = width; |
|
1506 // we get called with different widths all the time (for example for figuring |
|
1507 // out the min/max widths), so we always have to do the full layout ;( |
|
1508 // also when for example in a table layoutFrom/layoutTo affect only one cell, |
|
1509 // making that one cell grow the available width of the other cells may change |
|
1510 // (shrink) and therefore when layoutCell gets called for them they have to |
|
1511 // be re-laid out, even if layoutFrom/layoutTo is not in their range. Hence |
|
1512 // this line: |
|
1513 |
|
1514 layoutStruct.pageHeight = QFixed::fromReal(document->pageSize().height()); |
|
1515 if (layoutStruct.pageHeight < 0 || !withPageBreaks) |
|
1516 layoutStruct.pageHeight = QFIXED_MAX; |
|
1517 const int currentPage = layoutStruct.currentPage(); |
|
1518 layoutStruct.pageTopMargin = td->effectiveTopMargin + td->cellSpacing + td->border + topPadding; |
|
1519 layoutStruct.pageBottomMargin = td->effectiveBottomMargin + td->cellSpacing + td->border + td->bottomPadding(fmt); |
|
1520 layoutStruct.pageBottom = (currentPage + 1) * layoutStruct.pageHeight - layoutStruct.pageBottomMargin; |
|
1521 |
|
1522 layoutStruct.fullLayout = true; |
|
1523 |
|
1524 QFixed pageTop = currentPage * layoutStruct.pageHeight + layoutStruct.pageTopMargin - layoutStruct.frameY; |
|
1525 layoutStruct.y = qMax(layoutStruct.y, pageTop); |
|
1526 |
|
1527 const QList<QTextFrame *> childFrames = td->childFrameMap.values(cell.row() + cell.column() * t->rows()); |
|
1528 for (int i = 0; i < childFrames.size(); ++i) { |
|
1529 QTextFrame *frame = childFrames.at(i); |
|
1530 QTextFrameData *cd = data(frame); |
|
1531 cd->sizeDirty = true; |
|
1532 } |
|
1533 |
|
1534 layoutFlow(cell.begin(), &layoutStruct, layoutFrom, layoutTo, width); |
|
1535 |
|
1536 QFixed floatMinWidth; |
|
1537 |
|
1538 // floats that are located inside the text (like inline images) aren't taken into account by |
|
1539 // layoutFlow with regards to the cell height (layoutStruct->y), so for a safety measure we |
|
1540 // do that here. For example with <td><img align="right" src="..." />blah</td> |
|
1541 // when the image happens to be higher than the text |
|
1542 for (int i = 0; i < childFrames.size(); ++i) { |
|
1543 QTextFrame *frame = childFrames.at(i); |
|
1544 QTextFrameData *cd = data(frame); |
|
1545 |
|
1546 if (frame->frameFormat().position() != QTextFrameFormat::InFlow) |
|
1547 layoutStruct.y = qMax(layoutStruct.y, cd->position.y + cd->size.height); |
|
1548 |
|
1549 floatMinWidth = qMax(floatMinWidth, cd->minimumWidth); |
|
1550 } |
|
1551 |
|
1552 // constraint the maximumWidth by the minimum width of the fixed size floats, to |
|
1553 // keep them visible |
|
1554 layoutStruct.maximumWidth = qMax(layoutStruct.maximumWidth, floatMinWidth); |
|
1555 |
|
1556 // as floats in cells get added to the table's float list but must not affect |
|
1557 // floats in other cells we must clear the list here. |
|
1558 data(t)->floats.clear(); |
|
1559 |
|
1560 // qDebug() << "layoutCell done"; |
|
1561 |
|
1562 return layoutStruct; |
|
1563 } |
|
1564 |
|
1565 QRectF QTextDocumentLayoutPrivate::layoutTable(QTextTable *table, int layoutFrom, int layoutTo, QFixed parentY) |
|
1566 { |
|
1567 LDEBUG << "layoutTable"; |
|
1568 QTextTableData *td = static_cast<QTextTableData *>(data(table)); |
|
1569 Q_ASSERT(td->sizeDirty); |
|
1570 const int rows = table->rows(); |
|
1571 const int columns = table->columns(); |
|
1572 |
|
1573 const QTextTableFormat fmt = table->format(); |
|
1574 |
|
1575 td->childFrameMap.clear(); |
|
1576 { |
|
1577 const QList<QTextFrame *> children = table->childFrames(); |
|
1578 for (int i = 0; i < children.count(); ++i) { |
|
1579 QTextFrame *frame = children.at(i); |
|
1580 QTextTableCell cell = table->cellAt(frame->firstPosition()); |
|
1581 td->childFrameMap.insertMulti(cell.row() + cell.column() * rows, frame); |
|
1582 } |
|
1583 } |
|
1584 |
|
1585 QVector<QTextLength> columnWidthConstraints = fmt.columnWidthConstraints(); |
|
1586 if (columnWidthConstraints.size() != columns) |
|
1587 columnWidthConstraints.resize(columns); |
|
1588 Q_ASSERT(columnWidthConstraints.count() == columns); |
|
1589 |
|
1590 const QFixed cellSpacing = td->cellSpacing = QFixed::fromReal(scaleToDevice(fmt.cellSpacing())); |
|
1591 td->deviceScale = scaleToDevice(qreal(1)); |
|
1592 td->cellPadding = QFixed::fromReal(scaleToDevice(fmt.cellPadding())); |
|
1593 const QFixed leftMargin = td->leftMargin + td->border + td->padding; |
|
1594 const QFixed rightMargin = td->rightMargin + td->border + td->padding; |
|
1595 const QFixed topMargin = td->topMargin + td->border + td->padding; |
|
1596 |
|
1597 const QFixed absoluteTableY = parentY + td->position.y; |
|
1598 |
|
1599 const QTextOption::WrapMode oldDefaultWrapMode = docPrivate->defaultTextOption.wrapMode(); |
|
1600 |
|
1601 recalc_minmax_widths: |
|
1602 |
|
1603 QFixed remainingWidth = td->contentsWidth; |
|
1604 // two (vertical) borders per cell per column |
|
1605 remainingWidth -= columns * 2 * td->border; |
|
1606 // inter-cell spacing |
|
1607 remainingWidth -= (columns - 1) * cellSpacing; |
|
1608 // cell spacing at the left and right hand side |
|
1609 remainingWidth -= 2 * cellSpacing; |
|
1610 // remember the width used to distribute to percentaged columns |
|
1611 const QFixed initialTotalWidth = remainingWidth; |
|
1612 |
|
1613 td->widths.resize(columns); |
|
1614 td->widths.fill(0); |
|
1615 |
|
1616 td->minWidths.resize(columns); |
|
1617 // start with a minimum width of 0. totally empty |
|
1618 // cells of default created tables are invisible otherwise |
|
1619 // and therefore hardly editable |
|
1620 td->minWidths.fill(1); |
|
1621 |
|
1622 td->maxWidths.resize(columns); |
|
1623 td->maxWidths.fill(QFIXED_MAX); |
|
1624 |
|
1625 // calculate minimum and maximum sizes of the columns |
|
1626 for (int i = 0; i < columns; ++i) { |
|
1627 for (int row = 0; row < rows; ++row) { |
|
1628 const QTextTableCell cell = table->cellAt(row, i); |
|
1629 const int cspan = cell.columnSpan(); |
|
1630 |
|
1631 if (cspan > 1 && i != cell.column()) |
|
1632 continue; |
|
1633 |
|
1634 const QTextFormat fmt = cell.format(); |
|
1635 const QFixed leftPadding = td->leftPadding(fmt); |
|
1636 const QFixed rightPadding = td->rightPadding(fmt); |
|
1637 const QFixed widthPadding = leftPadding + rightPadding; |
|
1638 |
|
1639 // to figure out the min and the max width lay out the cell at |
|
1640 // maximum width. otherwise the maxwidth calculation sometimes |
|
1641 // returns wrong values |
|
1642 QLayoutStruct layoutStruct = layoutCell(table, cell, QFIXED_MAX, layoutFrom, |
|
1643 layoutTo, td, absoluteTableY, |
|
1644 /*withPageBreaks =*/false); |
|
1645 |
|
1646 // distribute the minimum width over all columns the cell spans |
|
1647 QFixed widthToDistribute = layoutStruct.minimumWidth + widthPadding; |
|
1648 for (int n = 0; n < cspan; ++n) { |
|
1649 const int col = i + n; |
|
1650 QFixed w = widthToDistribute / (cspan - n); |
|
1651 td->minWidths[col] = qMax(td->minWidths.at(col), w); |
|
1652 widthToDistribute -= td->minWidths.at(col); |
|
1653 if (widthToDistribute <= 0) |
|
1654 break; |
|
1655 } |
|
1656 |
|
1657 QFixed maxW = td->maxWidths.at(i); |
|
1658 if (layoutStruct.maximumWidth != QFIXED_MAX) { |
|
1659 if (maxW == QFIXED_MAX) |
|
1660 maxW = layoutStruct.maximumWidth + widthPadding; |
|
1661 else |
|
1662 maxW = qMax(maxW, layoutStruct.maximumWidth + widthPadding); |
|
1663 } |
|
1664 if (maxW == QFIXED_MAX) |
|
1665 continue; |
|
1666 |
|
1667 widthToDistribute = maxW; |
|
1668 for (int n = 0; n < cspan; ++n) { |
|
1669 const int col = i + n; |
|
1670 QFixed w = widthToDistribute / (cspan - n); |
|
1671 td->maxWidths[col] = qMax(td->minWidths.at(col), w); |
|
1672 widthToDistribute -= td->maxWidths.at(col); |
|
1673 if (widthToDistribute <= 0) |
|
1674 break; |
|
1675 } |
|
1676 } |
|
1677 } |
|
1678 |
|
1679 // set fixed values, figure out total percentages used and number of |
|
1680 // variable length cells. Also assign the minimum width for variable columns. |
|
1681 QFixed totalPercentage; |
|
1682 int variableCols = 0; |
|
1683 QFixed totalMinWidth = 0; |
|
1684 for (int i = 0; i < columns; ++i) { |
|
1685 const QTextLength &length = columnWidthConstraints.at(i); |
|
1686 if (length.type() == QTextLength::FixedLength) { |
|
1687 td->minWidths[i] = td->widths[i] = qMax(scaleToDevice(QFixed::fromReal(length.rawValue())), td->minWidths.at(i)); |
|
1688 remainingWidth -= td->widths.at(i); |
|
1689 } else if (length.type() == QTextLength::PercentageLength) { |
|
1690 totalPercentage += QFixed::fromReal(length.rawValue()); |
|
1691 } else if (length.type() == QTextLength::VariableLength) { |
|
1692 variableCols++; |
|
1693 |
|
1694 td->widths[i] = td->minWidths.at(i); |
|
1695 remainingWidth -= td->minWidths.at(i); |
|
1696 } |
|
1697 totalMinWidth += td->minWidths.at(i); |
|
1698 } |
|
1699 |
|
1700 // set percentage values |
|
1701 { |
|
1702 const QFixed totalPercentagedWidth = initialTotalWidth * totalPercentage / 100; |
|
1703 QFixed remainingMinWidths = totalMinWidth; |
|
1704 for (int i = 0; i < columns; ++i) { |
|
1705 remainingMinWidths -= td->minWidths.at(i); |
|
1706 if (columnWidthConstraints.at(i).type() == QTextLength::PercentageLength) { |
|
1707 const QFixed allottedPercentage = QFixed::fromReal(columnWidthConstraints.at(i).rawValue()); |
|
1708 |
|
1709 const QFixed percentWidth = totalPercentagedWidth * allottedPercentage / totalPercentage; |
|
1710 if (percentWidth >= td->minWidths.at(i)) { |
|
1711 td->widths[i] = qBound(td->minWidths.at(i), percentWidth, remainingWidth - remainingMinWidths); |
|
1712 } else { |
|
1713 td->widths[i] = td->minWidths.at(i); |
|
1714 } |
|
1715 remainingWidth -= td->widths.at(i); |
|
1716 } |
|
1717 } |
|
1718 } |
|
1719 |
|
1720 // for variable columns distribute the remaining space |
|
1721 if (variableCols > 0 && remainingWidth > 0) { |
|
1722 QVarLengthArray<int> columnsWithProperMaxSize; |
|
1723 for (int i = 0; i < columns; ++i) |
|
1724 if (columnWidthConstraints.at(i).type() == QTextLength::VariableLength |
|
1725 && td->maxWidths.at(i) != QFIXED_MAX) |
|
1726 columnsWithProperMaxSize.append(i); |
|
1727 |
|
1728 QFixed lastRemainingWidth = remainingWidth; |
|
1729 while (remainingWidth > 0) { |
|
1730 for (int k = 0; k < columnsWithProperMaxSize.count(); ++k) { |
|
1731 const int col = columnsWithProperMaxSize[k]; |
|
1732 const int colsLeft = columnsWithProperMaxSize.count() - k; |
|
1733 const QFixed w = qMin(td->maxWidths.at(col) - td->widths.at(col), remainingWidth / colsLeft); |
|
1734 td->widths[col] += w; |
|
1735 remainingWidth -= w; |
|
1736 } |
|
1737 if (remainingWidth == lastRemainingWidth) |
|
1738 break; |
|
1739 lastRemainingWidth = remainingWidth; |
|
1740 } |
|
1741 |
|
1742 if (remainingWidth > 0 |
|
1743 // don't unnecessarily grow variable length sized tables |
|
1744 && fmt.width().type() != QTextLength::VariableLength) { |
|
1745 const QFixed widthPerAnySizedCol = remainingWidth / variableCols; |
|
1746 for (int col = 0; col < columns; ++col) { |
|
1747 if (columnWidthConstraints.at(col).type() == QTextLength::VariableLength) |
|
1748 td->widths[col] += widthPerAnySizedCol; |
|
1749 } |
|
1750 } |
|
1751 } |
|
1752 |
|
1753 td->columnPositions.resize(columns); |
|
1754 td->columnPositions[0] = leftMargin /*includes table border*/ + cellSpacing + td->border; |
|
1755 |
|
1756 for (int i = 1; i < columns; ++i) |
|
1757 td->columnPositions[i] = td->columnPositions.at(i-1) + td->widths.at(i-1) + 2 * td->border + cellSpacing; |
|
1758 |
|
1759 // - margin to compensate the + margin in columnPositions[0] |
|
1760 const QFixed contentsWidth = td->columnPositions.last() + td->widths.last() + td->padding + td->border + cellSpacing - leftMargin; |
|
1761 |
|
1762 // if the table is too big and causes an overflow re-do the layout with WrapAnywhere as wrap |
|
1763 // mode |
|
1764 if (docPrivate->defaultTextOption.wrapMode() == QTextOption::WrapAtWordBoundaryOrAnywhere |
|
1765 && contentsWidth > td->contentsWidth) { |
|
1766 docPrivate->defaultTextOption.setWrapMode(QTextOption::WrapAnywhere); |
|
1767 // go back to the top of the function |
|
1768 goto recalc_minmax_widths; |
|
1769 } |
|
1770 |
|
1771 td->contentsWidth = contentsWidth; |
|
1772 |
|
1773 docPrivate->defaultTextOption.setWrapMode(oldDefaultWrapMode); |
|
1774 |
|
1775 td->heights.resize(rows); |
|
1776 td->heights.fill(0); |
|
1777 |
|
1778 td->rowPositions.resize(rows); |
|
1779 td->rowPositions[0] = topMargin /*includes table border*/ + cellSpacing + td->border; |
|
1780 |
|
1781 bool haveRowSpannedCells = false; |
|
1782 |
|
1783 // need to keep track of cell heights for vertical alignment |
|
1784 QVector<QFixed> cellHeights; |
|
1785 cellHeights.reserve(rows * columns); |
|
1786 |
|
1787 QFixed pageHeight = QFixed::fromReal(document->pageSize().height()); |
|
1788 if (pageHeight <= 0) |
|
1789 pageHeight = QFIXED_MAX; |
|
1790 |
|
1791 QVector<QFixed> heightToDistribute; |
|
1792 heightToDistribute.resize(columns); |
|
1793 |
|
1794 td->headerHeight = 0; |
|
1795 const int headerRowCount = qMin(table->format().headerRowCount(), rows - 1); |
|
1796 const QFixed originalTopMargin = td->effectiveTopMargin; |
|
1797 bool hasDroppedTable = false; |
|
1798 |
|
1799 // now that we have the column widths we can lay out all cells with the right width. |
|
1800 // spanning cells are only allowed to grow the last row spanned by the cell. |
|
1801 // |
|
1802 // ### this could be made faster by iterating over the cells array of QTextTable |
|
1803 for (int r = 0; r < rows; ++r) { |
|
1804 td->calcRowPosition(r); |
|
1805 |
|
1806 const int tableStartPage = (absoluteTableY / pageHeight).truncate(); |
|
1807 const int currentPage = ((td->rowPositions[r] + absoluteTableY) / pageHeight).truncate(); |
|
1808 const QFixed pageBottom = (currentPage + 1) * pageHeight - td->effectiveBottomMargin - absoluteTableY - cellSpacing - td->border; |
|
1809 const QFixed pageTop = currentPage * pageHeight + td->effectiveTopMargin - absoluteTableY + cellSpacing + td->border; |
|
1810 const QFixed nextPageTop = pageTop + pageHeight; |
|
1811 |
|
1812 if (td->rowPositions[r] > pageBottom) |
|
1813 td->rowPositions[r] = nextPageTop; |
|
1814 else if (td->rowPositions[r] < pageTop) |
|
1815 td->rowPositions[r] = pageTop; |
|
1816 |
|
1817 bool dropRowToNextPage = true; |
|
1818 int cellCountBeforeRow = cellHeights.size(); |
|
1819 |
|
1820 // if we drop the row to the next page we need to subtract the drop |
|
1821 // distance from any row spanning cells |
|
1822 QFixed dropDistance = 0; |
|
1823 |
|
1824 relayout: |
|
1825 const int rowStartPage = ((td->rowPositions[r] + absoluteTableY) / pageHeight).truncate(); |
|
1826 // if any of the header rows or the first non-header row start on the next page |
|
1827 // then the entire header should be dropped |
|
1828 if (r <= headerRowCount && rowStartPage > tableStartPage && !hasDroppedTable) { |
|
1829 td->rowPositions[0] = nextPageTop; |
|
1830 cellHeights.clear(); |
|
1831 td->effectiveTopMargin = originalTopMargin; |
|
1832 hasDroppedTable = true; |
|
1833 r = -1; |
|
1834 continue; |
|
1835 } |
|
1836 |
|
1837 int rowCellCount = 0; |
|
1838 for (int c = 0; c < columns; ++c) { |
|
1839 QTextTableCell cell = table->cellAt(r, c); |
|
1840 const int rspan = cell.rowSpan(); |
|
1841 const int cspan = cell.columnSpan(); |
|
1842 |
|
1843 if (cspan > 1 && cell.column() != c) |
|
1844 continue; |
|
1845 |
|
1846 if (rspan > 1) { |
|
1847 haveRowSpannedCells = true; |
|
1848 |
|
1849 const int cellRow = cell.row(); |
|
1850 if (cellRow != r) { |
|
1851 // the last row gets all the remaining space |
|
1852 if (cellRow + rspan - 1 == r) |
|
1853 td->heights[r] = qMax(td->heights.at(r), heightToDistribute.at(c) - dropDistance); |
|
1854 continue; |
|
1855 } |
|
1856 } |
|
1857 |
|
1858 const QTextFormat fmt = cell.format(); |
|
1859 |
|
1860 const QFixed topPadding = td->topPadding(fmt); |
|
1861 const QFixed bottomPadding = td->bottomPadding(fmt); |
|
1862 const QFixed leftPadding = td->leftPadding(fmt); |
|
1863 const QFixed rightPadding = td->rightPadding(fmt); |
|
1864 const QFixed widthPadding = leftPadding + rightPadding; |
|
1865 |
|
1866 ++rowCellCount; |
|
1867 |
|
1868 const QFixed width = td->cellWidth(c, cspan) - widthPadding; |
|
1869 QLayoutStruct layoutStruct = layoutCell(table, cell, width, |
|
1870 layoutFrom, layoutTo, |
|
1871 td, absoluteTableY, |
|
1872 /*withPageBreaks =*/true); |
|
1873 |
|
1874 const QFixed height = layoutStruct.y + bottomPadding + topPadding; |
|
1875 |
|
1876 if (rspan > 1) |
|
1877 heightToDistribute[c] = height + dropDistance; |
|
1878 else |
|
1879 td->heights[r] = qMax(td->heights.at(r), height); |
|
1880 |
|
1881 cellHeights.append(layoutStruct.y); |
|
1882 |
|
1883 QFixed childPos = td->rowPositions.at(r) + topPadding + flowPosition(cell.begin()); |
|
1884 if (childPos < pageBottom) |
|
1885 dropRowToNextPage = false; |
|
1886 } |
|
1887 |
|
1888 if (rowCellCount > 0 && dropRowToNextPage) { |
|
1889 dropDistance = nextPageTop - td->rowPositions[r]; |
|
1890 td->rowPositions[r] = nextPageTop; |
|
1891 td->heights[r] = 0; |
|
1892 dropRowToNextPage = false; |
|
1893 cellHeights.resize(cellCountBeforeRow); |
|
1894 if (r > headerRowCount) |
|
1895 td->heights[r-1] = pageBottom - td->rowPositions[r-1]; |
|
1896 goto relayout; |
|
1897 } |
|
1898 |
|
1899 if (haveRowSpannedCells) { |
|
1900 const QFixed effectiveHeight = td->heights.at(r) + td->border + cellSpacing + td->border; |
|
1901 for (int c = 0; c < columns; ++c) |
|
1902 heightToDistribute[c] = qMax(heightToDistribute.at(c) - effectiveHeight - dropDistance, QFixed(0)); |
|
1903 } |
|
1904 |
|
1905 if (r == headerRowCount - 1) { |
|
1906 td->headerHeight = td->rowPositions[r] + td->heights[r] - td->rowPositions[0] + td->cellSpacing + 2 * td->border; |
|
1907 td->headerHeight -= td->headerHeight * (td->headerHeight / pageHeight).truncate(); |
|
1908 td->effectiveTopMargin += td->headerHeight; |
|
1909 } |
|
1910 } |
|
1911 |
|
1912 td->effectiveTopMargin = originalTopMargin; |
|
1913 |
|
1914 // now that all cells have been properly laid out, we can compute the |
|
1915 // vertical offsets for vertical alignment |
|
1916 td->cellVerticalOffsets.resize(rows * columns); |
|
1917 int cellIndex = 0; |
|
1918 for (int r = 0; r < rows; ++r) { |
|
1919 for (int c = 0; c < columns; ++c) { |
|
1920 QTextTableCell cell = table->cellAt(r, c); |
|
1921 if (cell.row() != r || cell.column() != c) |
|
1922 continue; |
|
1923 |
|
1924 const int rowSpan = cell.rowSpan(); |
|
1925 const QFixed availableHeight = td->rowPositions.at(r + rowSpan - 1) + td->heights.at(r + rowSpan - 1) - td->rowPositions.at(r); |
|
1926 |
|
1927 const QTextCharFormat cellFormat = cell.format(); |
|
1928 const QFixed cellHeight = cellHeights.at(cellIndex++) + td->topPadding(cellFormat) + td->bottomPadding(cellFormat); |
|
1929 |
|
1930 QFixed offset = 0; |
|
1931 switch (cellFormat.verticalAlignment()) { |
|
1932 case QTextCharFormat::AlignMiddle: |
|
1933 offset = (availableHeight - cellHeight) / 2; |
|
1934 break; |
|
1935 case QTextCharFormat::AlignBottom: |
|
1936 offset = availableHeight - cellHeight; |
|
1937 break; |
|
1938 default: |
|
1939 break; |
|
1940 }; |
|
1941 |
|
1942 for (int rd = 0; rd < cell.rowSpan(); ++rd) { |
|
1943 for (int cd = 0; cd < cell.columnSpan(); ++cd) { |
|
1944 const int index = (c + cd) + (r + rd) * columns; |
|
1945 td->cellVerticalOffsets[index] = offset; |
|
1946 } |
|
1947 } |
|
1948 } |
|
1949 } |
|
1950 |
|
1951 td->minimumWidth = td->columnPositions.at(0); |
|
1952 for (int i = 0; i < columns; ++i) { |
|
1953 td->minimumWidth += td->minWidths.at(i) + 2 * td->border + cellSpacing; |
|
1954 } |
|
1955 td->minimumWidth += rightMargin - td->border; |
|
1956 |
|
1957 td->maximumWidth = td->columnPositions.at(0); |
|
1958 for (int i = 0; i < columns; ++i) |
|
1959 if (td->maxWidths.at(i) != QFIXED_MAX) |
|
1960 td->maximumWidth += td->maxWidths.at(i) + 2 * td->border + cellSpacing; |
|
1961 td->maximumWidth += rightMargin - td->border; |
|
1962 |
|
1963 td->updateTableSize(); |
|
1964 td->sizeDirty = false; |
|
1965 return QRectF(); // invalid rect -> update everything |
|
1966 } |
|
1967 |
|
1968 void QTextDocumentLayoutPrivate::positionFloat(QTextFrame *frame, QTextLine *currentLine) |
|
1969 { |
|
1970 QTextFrameData *fd = data(frame); |
|
1971 |
|
1972 QTextFrame *parent = frame->parentFrame(); |
|
1973 Q_ASSERT(parent); |
|
1974 QTextFrameData *pd = data(parent); |
|
1975 Q_ASSERT(pd && pd->currentLayoutStruct); |
|
1976 |
|
1977 QLayoutStruct *layoutStruct = pd->currentLayoutStruct; |
|
1978 |
|
1979 if (!pd->floats.contains(frame)) |
|
1980 pd->floats.append(frame); |
|
1981 fd->layoutDirty = true; |
|
1982 Q_ASSERT(!fd->sizeDirty); |
|
1983 |
|
1984 // qDebug() << "positionFloat:" << frame << "width=" << fd->size.width; |
|
1985 QFixed y = layoutStruct->y; |
|
1986 if (currentLine) { |
|
1987 QFixed left, right; |
|
1988 floatMargins(y, layoutStruct, &left, &right); |
|
1989 // qDebug() << "have line: right=" << right << "left=" << left << "textWidth=" << currentLine->width(); |
|
1990 if (right - left < QFixed::fromReal(currentLine->naturalTextWidth()) + fd->size.width) { |
|
1991 layoutStruct->pendingFloats.append(frame); |
|
1992 // qDebug() << " adding to pending list"; |
|
1993 return; |
|
1994 } |
|
1995 } |
|
1996 |
|
1997 bool frameSpansIntoNextPage = (y + layoutStruct->frameY + fd->size.height > layoutStruct->pageBottom); |
|
1998 if (frameSpansIntoNextPage && fd->size.height <= layoutStruct->pageHeight) { |
|
1999 layoutStruct->newPage(); |
|
2000 y = layoutStruct->y; |
|
2001 |
|
2002 frameSpansIntoNextPage = false; |
|
2003 } |
|
2004 |
|
2005 y = findY(y, layoutStruct, fd->size.width); |
|
2006 |
|
2007 QFixed left, right; |
|
2008 floatMargins(y, layoutStruct, &left, &right); |
|
2009 |
|
2010 if (frame->frameFormat().position() == QTextFrameFormat::FloatLeft) { |
|
2011 fd->position.x = left; |
|
2012 fd->position.y = y; |
|
2013 } else { |
|
2014 fd->position.x = right - fd->size.width; |
|
2015 fd->position.y = y; |
|
2016 } |
|
2017 |
|
2018 layoutStruct->minimumWidth = qMax(layoutStruct->minimumWidth, fd->minimumWidth); |
|
2019 layoutStruct->maximumWidth = qMin(layoutStruct->maximumWidth, fd->maximumWidth); |
|
2020 |
|
2021 // qDebug()<< "float positioned at " << fd->position.x << fd->position.y; |
|
2022 fd->layoutDirty = false; |
|
2023 |
|
2024 // If the frame is a table, then positioning it will affect the size if it covers more than |
|
2025 // one page, because of page breaks and repeating the header. |
|
2026 if (qobject_cast<QTextTable *>(frame) != 0) |
|
2027 fd->sizeDirty = frameSpansIntoNextPage; |
|
2028 } |
|
2029 |
|
2030 QRectF QTextDocumentLayoutPrivate::layoutFrame(QTextFrame *f, int layoutFrom, int layoutTo, QFixed parentY) |
|
2031 { |
|
2032 LDEBUG << "layoutFrame (pre)"; |
|
2033 Q_ASSERT(data(f)->sizeDirty); |
|
2034 // qDebug("layouting frame (%d--%d), parent=%p", f->firstPosition(), f->lastPosition(), f->parentFrame()); |
|
2035 |
|
2036 QTextFrameFormat fformat = f->frameFormat(); |
|
2037 |
|
2038 QTextFrame *parent = f->parentFrame(); |
|
2039 const QTextFrameData *pd = parent ? data(parent) : 0; |
|
2040 |
|
2041 const qreal maximumWidth = qMax(qreal(0), pd ? pd->contentsWidth.toReal() : document->pageSize().width()); |
|
2042 QFixed width = QFixed::fromReal(fformat.width().value(maximumWidth)); |
|
2043 if (fformat.width().type() == QTextLength::FixedLength) |
|
2044 width = scaleToDevice(width); |
|
2045 |
|
2046 const QFixed maximumHeight = pd ? pd->contentsHeight : -1; |
|
2047 const QFixed height = (maximumHeight != -1 || fformat.height().type() != QTextLength::PercentageLength) |
|
2048 ? QFixed::fromReal(fformat.height().value(maximumHeight.toReal())) |
|
2049 : -1; |
|
2050 |
|
2051 return layoutFrame(f, layoutFrom, layoutTo, width, height, parentY); |
|
2052 } |
|
2053 |
|
2054 QRectF QTextDocumentLayoutPrivate::layoutFrame(QTextFrame *f, int layoutFrom, int layoutTo, QFixed frameWidth, QFixed frameHeight, QFixed parentY) |
|
2055 { |
|
2056 LDEBUG << "layoutFrame from=" << layoutFrom << "to=" << layoutTo; |
|
2057 Q_ASSERT(data(f)->sizeDirty); |
|
2058 // qDebug("layouting frame (%d--%d), parent=%p", f->firstPosition(), f->lastPosition(), f->parentFrame()); |
|
2059 |
|
2060 QTextFrameData *fd = data(f); |
|
2061 QFixed newContentsWidth; |
|
2062 |
|
2063 { |
|
2064 QTextFrameFormat fformat = f->frameFormat(); |
|
2065 // set sizes of this frame from the format |
|
2066 fd->topMargin = QFixed::fromReal(fformat.topMargin()); |
|
2067 fd->bottomMargin = QFixed::fromReal(fformat.bottomMargin()); |
|
2068 fd->leftMargin = QFixed::fromReal(fformat.leftMargin()); |
|
2069 fd->rightMargin = QFixed::fromReal(fformat.rightMargin()); |
|
2070 fd->border = QFixed::fromReal(fformat.border()); |
|
2071 fd->padding = QFixed::fromReal(fformat.padding()); |
|
2072 |
|
2073 QTextFrame *parent = f->parentFrame(); |
|
2074 const QTextFrameData *pd = parent ? data(parent) : 0; |
|
2075 |
|
2076 // accumulate top and bottom margins |
|
2077 if (parent) { |
|
2078 fd->effectiveTopMargin = pd->effectiveTopMargin + fd->topMargin + fd->border + fd->padding; |
|
2079 fd->effectiveBottomMargin = pd->effectiveBottomMargin + fd->topMargin + fd->border + fd->padding; |
|
2080 |
|
2081 if (qobject_cast<QTextTable *>(parent)) { |
|
2082 const QTextTableData *td = static_cast<const QTextTableData *>(pd); |
|
2083 fd->effectiveTopMargin += td->cellSpacing + td->border + td->cellPadding; |
|
2084 fd->effectiveBottomMargin += td->cellSpacing + td->border + td->cellPadding; |
|
2085 } |
|
2086 } else { |
|
2087 fd->effectiveTopMargin = fd->topMargin + fd->border + fd->padding; |
|
2088 fd->effectiveBottomMargin = fd->bottomMargin + fd->border + fd->padding; |
|
2089 } |
|
2090 |
|
2091 newContentsWidth = frameWidth - 2*(fd->border + fd->padding) |
|
2092 - fd->leftMargin - fd->rightMargin; |
|
2093 |
|
2094 if (frameHeight != -1) { |
|
2095 fd->contentsHeight = frameHeight - 2*(fd->border + fd->padding) |
|
2096 - fd->topMargin - fd->bottomMargin; |
|
2097 } else { |
|
2098 fd->contentsHeight = frameHeight; |
|
2099 } |
|
2100 } |
|
2101 |
|
2102 if (isFrameFromInlineObject(f)) { |
|
2103 // never reached, handled in resizeInlineObject/positionFloat instead |
|
2104 return QRectF(); |
|
2105 } |
|
2106 |
|
2107 if (QTextTable *table = qobject_cast<QTextTable *>(f)) { |
|
2108 fd->contentsWidth = newContentsWidth; |
|
2109 return layoutTable(table, layoutFrom, layoutTo, parentY); |
|
2110 } |
|
2111 |
|
2112 // set fd->contentsWidth temporarily, so that layoutFrame for the children |
|
2113 // picks the right width. We'll initialize it properly at the end of this |
|
2114 // function. |
|
2115 fd->contentsWidth = newContentsWidth; |
|
2116 |
|
2117 QLayoutStruct layoutStruct; |
|
2118 layoutStruct.frame = f; |
|
2119 layoutStruct.x_left = fd->leftMargin + fd->border + fd->padding; |
|
2120 layoutStruct.x_right = layoutStruct.x_left + newContentsWidth; |
|
2121 layoutStruct.y = fd->topMargin + fd->border + fd->padding; |
|
2122 layoutStruct.frameY = parentY + fd->position.y; |
|
2123 layoutStruct.contentsWidth = 0; |
|
2124 layoutStruct.minimumWidth = 0; |
|
2125 layoutStruct.maximumWidth = QFIXED_MAX; |
|
2126 layoutStruct.fullLayout = fd->oldContentsWidth != newContentsWidth; |
|
2127 layoutStruct.updateRect = QRectF(QPointF(0, 0), QSizeF(qreal(INT_MAX), qreal(INT_MAX))); |
|
2128 LDEBUG << "layoutStruct: x_left" << layoutStruct.x_left << "x_right" << layoutStruct.x_right |
|
2129 << "fullLayout" << layoutStruct.fullLayout; |
|
2130 fd->oldContentsWidth = newContentsWidth; |
|
2131 |
|
2132 layoutStruct.pageHeight = QFixed::fromReal(document->pageSize().height()); |
|
2133 if (layoutStruct.pageHeight < 0) |
|
2134 layoutStruct.pageHeight = QFIXED_MAX; |
|
2135 |
|
2136 const int currentPage = layoutStruct.pageHeight == 0 ? 0 : (layoutStruct.frameY / layoutStruct.pageHeight).truncate(); |
|
2137 layoutStruct.pageTopMargin = fd->effectiveTopMargin; |
|
2138 layoutStruct.pageBottomMargin = fd->effectiveBottomMargin; |
|
2139 layoutStruct.pageBottom = (currentPage + 1) * layoutStruct.pageHeight - layoutStruct.pageBottomMargin; |
|
2140 |
|
2141 if (!f->parentFrame()) |
|
2142 idealWidth = 0; // reset |
|
2143 |
|
2144 QTextFrame::Iterator it = f->begin(); |
|
2145 layoutFlow(it, &layoutStruct, layoutFrom, layoutTo); |
|
2146 |
|
2147 QFixed maxChildFrameWidth = 0; |
|
2148 QList<QTextFrame *> children = f->childFrames(); |
|
2149 for (int i = 0; i < children.size(); ++i) { |
|
2150 QTextFrame *c = children.at(i); |
|
2151 QTextFrameData *cd = data(c); |
|
2152 maxChildFrameWidth = qMax(maxChildFrameWidth, cd->size.width); |
|
2153 } |
|
2154 |
|
2155 const QFixed marginWidth = 2*(fd->border + fd->padding) + fd->leftMargin + fd->rightMargin; |
|
2156 if (!f->parentFrame()) { |
|
2157 idealWidth = qMax(maxChildFrameWidth, layoutStruct.contentsWidth).toReal(); |
|
2158 idealWidth += marginWidth.toReal(); |
|
2159 } |
|
2160 |
|
2161 QFixed actualWidth = qMax(newContentsWidth, qMax(maxChildFrameWidth, layoutStruct.contentsWidth)); |
|
2162 fd->contentsWidth = actualWidth; |
|
2163 if (newContentsWidth <= 0) { // nowrap layout? |
|
2164 fd->contentsWidth = newContentsWidth; |
|
2165 } |
|
2166 |
|
2167 fd->minimumWidth = layoutStruct.minimumWidth; |
|
2168 fd->maximumWidth = layoutStruct.maximumWidth; |
|
2169 |
|
2170 fd->size.height = fd->contentsHeight == -1 |
|
2171 ? layoutStruct.y + fd->border + fd->padding + fd->bottomMargin |
|
2172 : fd->contentsHeight + 2*(fd->border + fd->padding) + fd->topMargin + fd->bottomMargin; |
|
2173 fd->size.width = actualWidth + marginWidth; |
|
2174 fd->sizeDirty = false; |
|
2175 if (layoutStruct.updateRectForFloats.isValid()) |
|
2176 layoutStruct.updateRect |= layoutStruct.updateRectForFloats; |
|
2177 return layoutStruct.updateRect; |
|
2178 } |
|
2179 |
|
2180 void QTextDocumentLayoutPrivate::layoutFlow(QTextFrame::Iterator it, QLayoutStruct *layoutStruct, |
|
2181 int layoutFrom, int layoutTo, QFixed width) |
|
2182 { |
|
2183 LDEBUG << "layoutFlow from=" << layoutFrom << "to=" << layoutTo; |
|
2184 QTextFrameData *fd = data(layoutStruct->frame); |
|
2185 |
|
2186 fd->currentLayoutStruct = layoutStruct; |
|
2187 |
|
2188 QTextFrame::Iterator previousIt; |
|
2189 |
|
2190 const bool inRootFrame = (it.parentFrame() == document->rootFrame()); |
|
2191 if (inRootFrame) { |
|
2192 bool redoCheckPoints = layoutStruct->fullLayout || checkPoints.isEmpty(); |
|
2193 |
|
2194 if (!redoCheckPoints) { |
|
2195 QVector<QCheckPoint>::Iterator checkPoint = qLowerBound(checkPoints.begin(), checkPoints.end(), layoutFrom); |
|
2196 if (checkPoint != checkPoints.end()) { |
|
2197 if (checkPoint != checkPoints.begin()) |
|
2198 --checkPoint; |
|
2199 |
|
2200 layoutStruct->y = checkPoint->y; |
|
2201 layoutStruct->frameY = checkPoint->frameY; |
|
2202 layoutStruct->minimumWidth = checkPoint->minimumWidth; |
|
2203 layoutStruct->maximumWidth = checkPoint->maximumWidth; |
|
2204 layoutStruct->contentsWidth = checkPoint->contentsWidth; |
|
2205 |
|
2206 if (layoutStruct->pageHeight > 0) { |
|
2207 int page = layoutStruct->currentPage(); |
|
2208 layoutStruct->pageBottom = (page + 1) * layoutStruct->pageHeight - layoutStruct->pageBottomMargin; |
|
2209 } |
|
2210 |
|
2211 it = frameIteratorForTextPosition(checkPoint->positionInFrame); |
|
2212 checkPoints.resize(checkPoint - checkPoints.begin() + 1); |
|
2213 |
|
2214 if (checkPoint != checkPoints.begin()) { |
|
2215 previousIt = it; |
|
2216 --previousIt; |
|
2217 } |
|
2218 } else { |
|
2219 redoCheckPoints = true; |
|
2220 } |
|
2221 } |
|
2222 |
|
2223 if (redoCheckPoints) { |
|
2224 checkPoints.clear(); |
|
2225 QCheckPoint cp; |
|
2226 cp.y = layoutStruct->y; |
|
2227 cp.frameY = layoutStruct->frameY; |
|
2228 cp.positionInFrame = 0; |
|
2229 cp.minimumWidth = layoutStruct->minimumWidth; |
|
2230 cp.maximumWidth = layoutStruct->maximumWidth; |
|
2231 cp.contentsWidth = layoutStruct->contentsWidth; |
|
2232 checkPoints.append(cp); |
|
2233 } |
|
2234 } |
|
2235 |
|
2236 QTextBlockFormat previousBlockFormat = previousIt.currentBlock().blockFormat(); |
|
2237 |
|
2238 QFixed maximumBlockWidth = 0; |
|
2239 while (!it.atEnd()) { |
|
2240 QTextFrame *c = it.currentFrame(); |
|
2241 |
|
2242 int docPos; |
|
2243 if (it.currentFrame()) |
|
2244 docPos = it.currentFrame()->firstPosition(); |
|
2245 else |
|
2246 docPos = it.currentBlock().position(); |
|
2247 |
|
2248 if (inRootFrame) { |
|
2249 if (qAbs(layoutStruct->y - checkPoints.last().y) > 2000) { |
|
2250 QFixed left, right; |
|
2251 floatMargins(layoutStruct->y, layoutStruct, &left, &right); |
|
2252 if (left == layoutStruct->x_left && right == layoutStruct->x_right) { |
|
2253 QCheckPoint p; |
|
2254 p.y = layoutStruct->y; |
|
2255 p.frameY = layoutStruct->frameY; |
|
2256 p.positionInFrame = docPos; |
|
2257 p.minimumWidth = layoutStruct->minimumWidth; |
|
2258 p.maximumWidth = layoutStruct->maximumWidth; |
|
2259 p.contentsWidth = layoutStruct->contentsWidth; |
|
2260 checkPoints.append(p); |
|
2261 |
|
2262 if (currentLazyLayoutPosition != -1 |
|
2263 && docPos > currentLazyLayoutPosition + lazyLayoutStepSize) |
|
2264 break; |
|
2265 |
|
2266 } |
|
2267 } |
|
2268 } |
|
2269 |
|
2270 if (c) { |
|
2271 // position child frame |
|
2272 QTextFrameData *cd = data(c); |
|
2273 |
|
2274 QTextFrameFormat fformat = c->frameFormat(); |
|
2275 |
|
2276 if (fformat.position() == QTextFrameFormat::InFlow) { |
|
2277 if (fformat.pageBreakPolicy() & QTextFormat::PageBreak_AlwaysBefore) |
|
2278 layoutStruct->newPage(); |
|
2279 |
|
2280 QFixed left, right; |
|
2281 floatMargins(layoutStruct->y, layoutStruct, &left, &right); |
|
2282 left = qMax(left, layoutStruct->x_left); |
|
2283 right = qMin(right, layoutStruct->x_right); |
|
2284 |
|
2285 if (right - left < cd->size.width) { |
|
2286 layoutStruct->y = findY(layoutStruct->y, layoutStruct, cd->size.width); |
|
2287 floatMargins(layoutStruct->y, layoutStruct, &left, &right); |
|
2288 } |
|
2289 |
|
2290 QFixedPoint pos(left, layoutStruct->y); |
|
2291 |
|
2292 Qt::Alignment align = Qt::AlignLeft; |
|
2293 |
|
2294 QTextTable *table = qobject_cast<QTextTable *>(c); |
|
2295 |
|
2296 if (table) |
|
2297 align = table->format().alignment() & Qt::AlignHorizontal_Mask; |
|
2298 |
|
2299 // detect whether we have any alignment in the document that disallows optimizations, |
|
2300 // such as not laying out the document again in a textedit with wrapping disabled. |
|
2301 if (inRootFrame && !(align & Qt::AlignLeft)) |
|
2302 contentHasAlignment = true; |
|
2303 |
|
2304 cd->position = pos; |
|
2305 |
|
2306 if (document->pageSize().height() > 0.0f) |
|
2307 cd->sizeDirty = true; |
|
2308 |
|
2309 if (cd->sizeDirty) { |
|
2310 if (width != 0) |
|
2311 layoutFrame(c, layoutFrom, layoutTo, width, -1, layoutStruct->frameY); |
|
2312 else |
|
2313 layoutFrame(c, layoutFrom, layoutTo, layoutStruct->frameY); |
|
2314 |
|
2315 QFixed absoluteChildPos = table ? pos.y + static_cast<QTextTableData *>(data(table))->rowPositions.at(0) : pos.y + firstChildPos(c); |
|
2316 absoluteChildPos += layoutStruct->frameY; |
|
2317 |
|
2318 // drop entire frame to next page if first child of frame is on next page |
|
2319 if (absoluteChildPos > layoutStruct->pageBottom) { |
|
2320 layoutStruct->newPage(); |
|
2321 pos.y = layoutStruct->y; |
|
2322 |
|
2323 cd->position = pos; |
|
2324 cd->sizeDirty = true; |
|
2325 |
|
2326 if (width != 0) |
|
2327 layoutFrame(c, layoutFrom, layoutTo, width, -1, layoutStruct->frameY); |
|
2328 else |
|
2329 layoutFrame(c, layoutFrom, layoutTo, layoutStruct->frameY); |
|
2330 } |
|
2331 } |
|
2332 |
|
2333 // align only if there is space for alignment |
|
2334 if (right - left > cd->size.width) { |
|
2335 if (align & Qt::AlignRight) |
|
2336 pos.x += layoutStruct->x_right - cd->size.width; |
|
2337 else if (align & Qt::AlignHCenter) |
|
2338 pos.x += (layoutStruct->x_right - cd->size.width) / 2; |
|
2339 } |
|
2340 |
|
2341 cd->position = pos; |
|
2342 |
|
2343 layoutStruct->y += cd->size.height; |
|
2344 const int page = layoutStruct->currentPage(); |
|
2345 layoutStruct->pageBottom = (page + 1) * layoutStruct->pageHeight - layoutStruct->pageBottomMargin; |
|
2346 |
|
2347 cd->layoutDirty = false; |
|
2348 |
|
2349 if (c->frameFormat().pageBreakPolicy() & QTextFormat::PageBreak_AlwaysAfter) |
|
2350 layoutStruct->newPage(); |
|
2351 } else { |
|
2352 QRectF oldFrameRect(cd->position.toPointF(), cd->size.toSizeF()); |
|
2353 QRectF updateRect; |
|
2354 |
|
2355 if (cd->sizeDirty) |
|
2356 updateRect = layoutFrame(c, layoutFrom, layoutTo); |
|
2357 |
|
2358 positionFloat(c); |
|
2359 |
|
2360 // If the size was made dirty when the position was set, layout again |
|
2361 if (cd->sizeDirty) |
|
2362 updateRect = layoutFrame(c, layoutFrom, layoutTo); |
|
2363 |
|
2364 QRectF frameRect(cd->position.toPointF(), cd->size.toSizeF()); |
|
2365 |
|
2366 if (frameRect == oldFrameRect && updateRect.isValid()) |
|
2367 updateRect.translate(cd->position.toPointF()); |
|
2368 else |
|
2369 updateRect = frameRect; |
|
2370 |
|
2371 layoutStruct->addUpdateRectForFloat(updateRect); |
|
2372 if (oldFrameRect.isValid()) |
|
2373 layoutStruct->addUpdateRectForFloat(oldFrameRect); |
|
2374 } |
|
2375 |
|
2376 layoutStruct->minimumWidth = qMax(layoutStruct->minimumWidth, cd->minimumWidth); |
|
2377 layoutStruct->maximumWidth = qMin(layoutStruct->maximumWidth, cd->maximumWidth); |
|
2378 |
|
2379 previousIt = it; |
|
2380 ++it; |
|
2381 } else { |
|
2382 QTextFrame::Iterator lastIt; |
|
2383 if (!previousIt.atEnd()) |
|
2384 lastIt = previousIt; |
|
2385 previousIt = it; |
|
2386 QTextBlock block = it.currentBlock(); |
|
2387 ++it; |
|
2388 |
|
2389 const QTextBlockFormat blockFormat = block.blockFormat(); |
|
2390 |
|
2391 if (blockFormat.pageBreakPolicy() & QTextFormat::PageBreak_AlwaysBefore) |
|
2392 layoutStruct->newPage(); |
|
2393 |
|
2394 const QFixed origY = layoutStruct->y; |
|
2395 const QFixed origPageBottom = layoutStruct->pageBottom; |
|
2396 const QFixed origMaximumWidth = layoutStruct->maximumWidth; |
|
2397 layoutStruct->maximumWidth = 0; |
|
2398 |
|
2399 const QTextBlockFormat *previousBlockFormatPtr = 0; |
|
2400 if (lastIt.currentBlock().isValid()) |
|
2401 previousBlockFormatPtr = &previousBlockFormat; |
|
2402 |
|
2403 // layout and position child block |
|
2404 layoutBlock(block, docPos, blockFormat, layoutStruct, layoutFrom, layoutTo, previousBlockFormatPtr); |
|
2405 |
|
2406 // detect whether we have any alignment in the document that disallows optimizations, |
|
2407 // such as not laying out the document again in a textedit with wrapping disabled. |
|
2408 if (inRootFrame && !(block.layout()->textOption().alignment() & Qt::AlignLeft)) |
|
2409 contentHasAlignment = true; |
|
2410 |
|
2411 // if the block right before a table is empty 'hide' it by |
|
2412 // positioning it into the table border |
|
2413 if (isEmptyBlockBeforeTable(block, blockFormat, it)) { |
|
2414 const QTextBlock lastBlock = lastIt.currentBlock(); |
|
2415 const qreal lastBlockBottomMargin = lastBlock.isValid() ? lastBlock.blockFormat().bottomMargin() : 0.0f; |
|
2416 layoutStruct->y = origY + QFixed::fromReal(qMax(lastBlockBottomMargin, block.blockFormat().topMargin())); |
|
2417 layoutStruct->pageBottom = origPageBottom; |
|
2418 } else { |
|
2419 // if the block right after a table is empty then 'hide' it, too |
|
2420 if (isEmptyBlockAfterTable(block, lastIt.currentFrame())) { |
|
2421 QTextTableData *td = static_cast<QTextTableData *>(data(lastIt.currentFrame())); |
|
2422 QTextLayout *layout = block.layout(); |
|
2423 |
|
2424 QPointF pos((td->position.x + td->size.width).toReal(), |
|
2425 (td->position.y + td->size.height).toReal() - layout->boundingRect().height()); |
|
2426 |
|
2427 layout->setPosition(pos); |
|
2428 layoutStruct->y = origY; |
|
2429 layoutStruct->pageBottom = origPageBottom; |
|
2430 } |
|
2431 |
|
2432 // if the block right after a table starts with a line separator, shift it up by one line |
|
2433 if (isLineSeparatorBlockAfterTable(block, lastIt.currentFrame())) { |
|
2434 QTextTableData *td = static_cast<QTextTableData *>(data(lastIt.currentFrame())); |
|
2435 QTextLayout *layout = block.layout(); |
|
2436 |
|
2437 QFixed height = QFixed::fromReal(layout->lineAt(0).height()); |
|
2438 |
|
2439 if (layoutStruct->pageBottom == origPageBottom) { |
|
2440 layoutStruct->y -= height; |
|
2441 layout->setPosition(layout->position() - QPointF(0, height.toReal())); |
|
2442 } else { |
|
2443 // relayout block to correctly handle page breaks |
|
2444 layoutStruct->y = origY - height; |
|
2445 layoutStruct->pageBottom = origPageBottom; |
|
2446 layoutBlock(block, docPos, blockFormat, layoutStruct, layoutFrom, layoutTo, previousBlockFormatPtr); |
|
2447 } |
|
2448 |
|
2449 QPointF linePos((td->position.x + td->size.width).toReal(), |
|
2450 (td->position.y + td->size.height - height).toReal()); |
|
2451 |
|
2452 layout->lineAt(0).setPosition(linePos - layout->position()); |
|
2453 } |
|
2454 |
|
2455 if (blockFormat.pageBreakPolicy() & QTextFormat::PageBreak_AlwaysAfter) |
|
2456 layoutStruct->newPage(); |
|
2457 } |
|
2458 |
|
2459 maximumBlockWidth = qMax(maximumBlockWidth, layoutStruct->maximumWidth); |
|
2460 layoutStruct->maximumWidth = origMaximumWidth; |
|
2461 previousBlockFormat = blockFormat; |
|
2462 } |
|
2463 } |
|
2464 if (layoutStruct->maximumWidth == QFIXED_MAX && maximumBlockWidth > 0) |
|
2465 layoutStruct->maximumWidth = maximumBlockWidth; |
|
2466 else |
|
2467 layoutStruct->maximumWidth = qMax(layoutStruct->maximumWidth, maximumBlockWidth); |
|
2468 |
|
2469 // a float at the bottom of a frame may make it taller, hence the qMax() for layoutStruct->y. |
|
2470 // we don't need to do it for tables though because floats in tables are per table |
|
2471 // and not per cell and layoutCell already takes care of doing the same as we do here |
|
2472 if (!qobject_cast<QTextTable *>(layoutStruct->frame)) { |
|
2473 QList<QTextFrame *> children = layoutStruct->frame->childFrames(); |
|
2474 for (int i = 0; i < children.count(); ++i) { |
|
2475 QTextFrameData *fd = data(children.at(i)); |
|
2476 if (!fd->layoutDirty && children.at(i)->frameFormat().position() != QTextFrameFormat::InFlow) |
|
2477 layoutStruct->y = qMax(layoutStruct->y, fd->position.y + fd->size.height); |
|
2478 } |
|
2479 } |
|
2480 |
|
2481 if (inRootFrame) { |
|
2482 // we assume that any float is aligned in a way that disallows the optimizations that rely |
|
2483 // on unaligned content. |
|
2484 if (!fd->floats.isEmpty()) |
|
2485 contentHasAlignment = true; |
|
2486 |
|
2487 if (it.atEnd()) { |
|
2488 //qDebug() << "layout done!"; |
|
2489 currentLazyLayoutPosition = -1; |
|
2490 QCheckPoint cp; |
|
2491 cp.y = layoutStruct->y; |
|
2492 cp.positionInFrame = docPrivate->length(); |
|
2493 cp.minimumWidth = layoutStruct->minimumWidth; |
|
2494 cp.maximumWidth = layoutStruct->maximumWidth; |
|
2495 cp.contentsWidth = layoutStruct->contentsWidth; |
|
2496 checkPoints.append(cp); |
|
2497 checkPoints.reserve(checkPoints.size()); |
|
2498 } else { |
|
2499 currentLazyLayoutPosition = checkPoints.last().positionInFrame; |
|
2500 // ####### |
|
2501 //checkPoints.last().positionInFrame = q->document()->docHandle()->length(); |
|
2502 } |
|
2503 } |
|
2504 |
|
2505 |
|
2506 fd->currentLayoutStruct = 0; |
|
2507 } |
|
2508 |
|
2509 void QTextDocumentLayoutPrivate::layoutBlock(const QTextBlock &bl, int blockPosition, const QTextBlockFormat &blockFormat, |
|
2510 QLayoutStruct *layoutStruct, int layoutFrom, int layoutTo, const QTextBlockFormat *previousBlockFormat) |
|
2511 { |
|
2512 Q_Q(QTextDocumentLayout); |
|
2513 |
|
2514 QTextLayout *tl = bl.layout(); |
|
2515 const int blockLength = bl.length(); |
|
2516 |
|
2517 LDEBUG << "layoutBlock from=" << layoutFrom << "to=" << layoutTo; |
|
2518 |
|
2519 // qDebug() << "layoutBlock; width" << layoutStruct->x_right - layoutStruct->x_left << "(maxWidth is btw" << tl->maximumWidth() << ')'; |
|
2520 |
|
2521 if (previousBlockFormat) { |
|
2522 qreal margin = qMax(blockFormat.topMargin(), previousBlockFormat->bottomMargin()); |
|
2523 if (margin > 0 && q->paintDevice()) { |
|
2524 margin *= qreal(q->paintDevice()->logicalDpiY()) / qreal(qt_defaultDpi()); |
|
2525 } |
|
2526 layoutStruct->y += QFixed::fromReal(margin); |
|
2527 } |
|
2528 |
|
2529 //QTextFrameData *fd = data(layoutStruct->frame); |
|
2530 |
|
2531 Qt::LayoutDirection dir = docPrivate->defaultTextOption.textDirection(); |
|
2532 if (blockFormat.hasProperty(QTextFormat::LayoutDirection)) |
|
2533 dir = blockFormat.layoutDirection(); |
|
2534 |
|
2535 QFixed extraMargin; |
|
2536 if (docPrivate->defaultTextOption.flags() & QTextOption::AddSpaceForLineAndParagraphSeparators) { |
|
2537 QFontMetricsF fm(bl.charFormat().font()); |
|
2538 extraMargin = QFixed::fromReal(fm.width(QChar(QChar(0x21B5)))); |
|
2539 } |
|
2540 |
|
2541 const QFixed indent = this->blockIndent(blockFormat); |
|
2542 const QFixed totalLeftMargin = QFixed::fromReal(blockFormat.leftMargin()) + (dir == Qt::RightToLeft ? extraMargin : indent); |
|
2543 const QFixed totalRightMargin = QFixed::fromReal(blockFormat.rightMargin()) + (dir == Qt::RightToLeft ? indent : extraMargin); |
|
2544 |
|
2545 const QPointF oldPosition = tl->position(); |
|
2546 tl->setPosition(QPointF(layoutStruct->x_left.toReal(), layoutStruct->y.toReal())); |
|
2547 |
|
2548 if (layoutStruct->fullLayout |
|
2549 || (blockPosition + blockLength > layoutFrom && blockPosition <= layoutTo) |
|
2550 // force relayout if we cross a page boundary |
|
2551 || (layoutStruct->pageHeight != QFIXED_MAX && layoutStruct->absoluteY() + QFixed::fromReal(tl->boundingRect().height()) > layoutStruct->pageBottom)) { |
|
2552 |
|
2553 LDEBUG << " do layout"; |
|
2554 QTextOption option = docPrivate->defaultTextOption; |
|
2555 option.setTextDirection(dir); |
|
2556 option.setTabs( blockFormat.tabPositions() ); |
|
2557 |
|
2558 Qt::Alignment align = docPrivate->defaultTextOption.alignment(); |
|
2559 if (blockFormat.hasProperty(QTextFormat::BlockAlignment)) |
|
2560 align = blockFormat.alignment(); |
|
2561 option.setAlignment(QStyle::visualAlignment(dir, align)); // for paragraph that are RTL, alignment is auto-reversed; |
|
2562 |
|
2563 if (blockFormat.nonBreakableLines() || document->pageSize().width() < 0) { |
|
2564 option.setWrapMode(QTextOption::ManualWrap); |
|
2565 } |
|
2566 |
|
2567 tl->setTextOption(option); |
|
2568 |
|
2569 const bool haveWordOrAnyWrapMode = (option.wrapMode() == QTextOption::WrapAtWordBoundaryOrAnywhere); |
|
2570 |
|
2571 // qDebug() << " layouting block at" << bl.position(); |
|
2572 const QFixed cy = layoutStruct->y; |
|
2573 const QFixed l = layoutStruct->x_left + totalLeftMargin; |
|
2574 const QFixed r = layoutStruct->x_right - totalRightMargin; |
|
2575 |
|
2576 tl->beginLayout(); |
|
2577 bool firstLine = true; |
|
2578 while (1) { |
|
2579 QTextLine line = tl->createLine(); |
|
2580 if (!line.isValid()) |
|
2581 break; |
|
2582 |
|
2583 QFixed left, right; |
|
2584 floatMargins(layoutStruct->y, layoutStruct, &left, &right); |
|
2585 left = qMax(left, l); |
|
2586 right = qMin(right, r); |
|
2587 QFixed text_indent; |
|
2588 if (firstLine) { |
|
2589 text_indent = QFixed::fromReal(blockFormat.textIndent()); |
|
2590 if (dir == Qt::LeftToRight) |
|
2591 left += text_indent; |
|
2592 else |
|
2593 right -= text_indent; |
|
2594 firstLine = false; |
|
2595 } |
|
2596 // qDebug() << "layout line y=" << currentYPos << "left=" << left << "right=" <<right; |
|
2597 |
|
2598 if (fixedColumnWidth != -1) |
|
2599 line.setNumColumns(fixedColumnWidth, (right - left).toReal()); |
|
2600 else |
|
2601 line.setLineWidth((right - left).toReal()); |
|
2602 |
|
2603 // qDebug() << "layoutBlock; layouting line with width" << right - left << "->textWidth" << line.textWidth(); |
|
2604 floatMargins(layoutStruct->y, layoutStruct, &left, &right); |
|
2605 left = qMax(left, l); |
|
2606 right = qMin(right, r); |
|
2607 if (dir == Qt::LeftToRight) |
|
2608 left += text_indent; |
|
2609 else |
|
2610 right -= text_indent; |
|
2611 |
|
2612 if (fixedColumnWidth == -1 && QFixed::fromReal(line.naturalTextWidth()) > right-left) { |
|
2613 // float has been added in the meantime, redo |
|
2614 layoutStruct->pendingFloats.clear(); |
|
2615 |
|
2616 line.setLineWidth((right-left).toReal()); |
|
2617 if (QFixed::fromReal(line.naturalTextWidth()) > right-left) { |
|
2618 if (haveWordOrAnyWrapMode) { |
|
2619 option.setWrapMode(QTextOption::WrapAnywhere); |
|
2620 tl->setTextOption(option); |
|
2621 } |
|
2622 |
|
2623 layoutStruct->pendingFloats.clear(); |
|
2624 // lines min width more than what we have |
|
2625 layoutStruct->y = findY(layoutStruct->y, layoutStruct, QFixed::fromReal(line.naturalTextWidth())); |
|
2626 floatMargins(layoutStruct->y, layoutStruct, &left, &right); |
|
2627 left = qMax(left, l); |
|
2628 right = qMin(right, r); |
|
2629 if (dir == Qt::LeftToRight) |
|
2630 left += text_indent; |
|
2631 else |
|
2632 right -= text_indent; |
|
2633 line.setLineWidth(qMax<qreal>(line.naturalTextWidth(), (right-left).toReal())); |
|
2634 |
|
2635 if (haveWordOrAnyWrapMode) { |
|
2636 option.setWrapMode(QTextOption::WordWrap); |
|
2637 tl->setTextOption(option); |
|
2638 } |
|
2639 } |
|
2640 |
|
2641 } |
|
2642 |
|
2643 QFixed lineHeight = QFixed::fromReal(line.height()); |
|
2644 if (layoutStruct->pageHeight > 0 && layoutStruct->absoluteY() + lineHeight > layoutStruct->pageBottom) { |
|
2645 layoutStruct->newPage(); |
|
2646 |
|
2647 floatMargins(layoutStruct->y, layoutStruct, &left, &right); |
|
2648 left = qMax(left, l); |
|
2649 right = qMin(right, r); |
|
2650 if (dir == Qt::LeftToRight) |
|
2651 left += text_indent; |
|
2652 else |
|
2653 right -= text_indent; |
|
2654 } |
|
2655 |
|
2656 line.setPosition(QPointF((left - layoutStruct->x_left).toReal(), (layoutStruct->y - cy).toReal())); |
|
2657 layoutStruct->y += lineHeight; |
|
2658 layoutStruct->contentsWidth |
|
2659 = qMax<QFixed>(layoutStruct->contentsWidth, QFixed::fromReal(line.x() + line.naturalTextWidth()) + totalRightMargin); |
|
2660 |
|
2661 // position floats |
|
2662 for (int i = 0; i < layoutStruct->pendingFloats.size(); ++i) { |
|
2663 QTextFrame *f = layoutStruct->pendingFloats.at(i); |
|
2664 positionFloat(f); |
|
2665 } |
|
2666 layoutStruct->pendingFloats.clear(); |
|
2667 } |
|
2668 tl->endLayout(); |
|
2669 } else { |
|
2670 const int cnt = tl->lineCount(); |
|
2671 for (int i = 0; i < cnt; ++i) { |
|
2672 LDEBUG << "going to move text line" << i; |
|
2673 QTextLine line = tl->lineAt(i); |
|
2674 layoutStruct->contentsWidth |
|
2675 = qMax(layoutStruct->contentsWidth, QFixed::fromReal(line.x() + tl->lineAt(i).naturalTextWidth()) + totalRightMargin); |
|
2676 const QFixed lineHeight = QFixed::fromReal(line.height()); |
|
2677 if (layoutStruct->pageHeight != QFIXED_MAX) { |
|
2678 if (layoutStruct->absoluteY() + lineHeight > layoutStruct->pageBottom) |
|
2679 layoutStruct->newPage(); |
|
2680 line.setPosition(QPointF(line.position().x(), layoutStruct->y.toReal() - tl->position().y())); |
|
2681 } |
|
2682 layoutStruct->y += lineHeight; |
|
2683 } |
|
2684 if (layoutStruct->updateRect.isValid() |
|
2685 && blockLength > 1) { |
|
2686 if (layoutFrom >= blockPosition + blockLength) { |
|
2687 // if our height didn't change and the change in the document is |
|
2688 // in one of the later paragraphs, then we don't need to repaint |
|
2689 // this one |
|
2690 layoutStruct->updateRect.setTop(qMax(layoutStruct->updateRect.top(), layoutStruct->y.toReal())); |
|
2691 } else if (layoutTo < blockPosition) { |
|
2692 if (oldPosition == tl->position()) |
|
2693 // if the change in the document happened earlier in the document |
|
2694 // and our position did /not/ change because none of the earlier paragraphs |
|
2695 // or frames changed their height, then we don't need to repaint |
|
2696 // this one |
|
2697 layoutStruct->updateRect.setBottom(qMin(layoutStruct->updateRect.bottom(), tl->position().y())); |
|
2698 else |
|
2699 layoutStruct->updateRect.setBottom(qreal(INT_MAX)); // reset |
|
2700 } |
|
2701 } |
|
2702 } |
|
2703 |
|
2704 // ### doesn't take floats into account. would need to do it per line. but how to retrieve then? (Simon) |
|
2705 const QFixed margins = totalLeftMargin + totalRightMargin; |
|
2706 layoutStruct->minimumWidth = qMax(layoutStruct->minimumWidth, QFixed::fromReal(tl->minimumWidth()) + margins); |
|
2707 |
|
2708 const QFixed maxW = QFixed::fromReal(tl->maximumWidth()) + margins; |
|
2709 |
|
2710 if (maxW > 0) { |
|
2711 if (layoutStruct->maximumWidth == QFIXED_MAX) |
|
2712 layoutStruct->maximumWidth = maxW; |
|
2713 else |
|
2714 layoutStruct->maximumWidth = qMax(layoutStruct->maximumWidth, maxW); |
|
2715 } |
|
2716 } |
|
2717 |
|
2718 void QTextDocumentLayoutPrivate::floatMargins(const QFixed &y, const QLayoutStruct *layoutStruct, |
|
2719 QFixed *left, QFixed *right) const |
|
2720 { |
|
2721 // qDebug() << "floatMargins y=" << y; |
|
2722 *left = layoutStruct->x_left; |
|
2723 *right = layoutStruct->x_right; |
|
2724 QTextFrameData *lfd = data(layoutStruct->frame); |
|
2725 for (int i = 0; i < lfd->floats.size(); ++i) { |
|
2726 QTextFrameData *fd = data(lfd->floats.at(i)); |
|
2727 if (!fd->layoutDirty) { |
|
2728 if (fd->position.y <= y && fd->position.y + fd->size.height > y) { |
|
2729 // qDebug() << "adjusting with float" << f << fd->position.x()<< fd->size.width(); |
|
2730 if (lfd->floats.at(i)->frameFormat().position() == QTextFrameFormat::FloatLeft) |
|
2731 *left = qMax(*left, fd->position.x + fd->size.width); |
|
2732 else |
|
2733 *right = qMin(*right, fd->position.x); |
|
2734 } |
|
2735 } |
|
2736 } |
|
2737 // qDebug() << "floatMargins: left="<<*left<<"right="<<*right<<"y="<<y; |
|
2738 } |
|
2739 |
|
2740 QFixed QTextDocumentLayoutPrivate::findY(QFixed yFrom, const QLayoutStruct *layoutStruct, QFixed requiredWidth) const |
|
2741 { |
|
2742 QFixed right, left; |
|
2743 requiredWidth = qMin(requiredWidth, layoutStruct->x_right - layoutStruct->x_left); |
|
2744 |
|
2745 // qDebug() << "findY:" << yFrom; |
|
2746 while (1) { |
|
2747 floatMargins(yFrom, layoutStruct, &left, &right); |
|
2748 // qDebug() << " yFrom=" << yFrom<<"right=" << right << "left=" << left << "requiredWidth=" << requiredWidth; |
|
2749 if (right-left >= requiredWidth) |
|
2750 break; |
|
2751 |
|
2752 // move float down until we find enough space |
|
2753 QFixed newY = QFIXED_MAX; |
|
2754 QTextFrameData *lfd = data(layoutStruct->frame); |
|
2755 for (int i = 0; i < lfd->floats.size(); ++i) { |
|
2756 QTextFrameData *fd = data(lfd->floats.at(i)); |
|
2757 if (!fd->layoutDirty) { |
|
2758 if (fd->position.y <= yFrom && fd->position.y + fd->size.height > yFrom) |
|
2759 newY = qMin(newY, fd->position.y + fd->size.height); |
|
2760 } |
|
2761 } |
|
2762 if (newY == QFIXED_MAX) |
|
2763 break; |
|
2764 yFrom = newY; |
|
2765 } |
|
2766 return yFrom; |
|
2767 } |
|
2768 |
|
2769 QTextDocumentLayout::QTextDocumentLayout(QTextDocument *doc) |
|
2770 : QAbstractTextDocumentLayout(*new QTextDocumentLayoutPrivate, doc) |
|
2771 { |
|
2772 registerHandler(QTextFormat::ImageObject, new QTextImageHandler(this)); |
|
2773 } |
|
2774 |
|
2775 |
|
2776 void QTextDocumentLayout::draw(QPainter *painter, const PaintContext &context) |
|
2777 { |
|
2778 Q_D(QTextDocumentLayout); |
|
2779 QTextFrame *frame = d->document->rootFrame(); |
|
2780 QTextFrameData *fd = data(frame); |
|
2781 |
|
2782 if(fd->sizeDirty) |
|
2783 return; |
|
2784 |
|
2785 if (context.clip.isValid()) { |
|
2786 d->ensureLayouted(QFixed::fromReal(context.clip.bottom())); |
|
2787 } else { |
|
2788 d->ensureLayoutFinished(); |
|
2789 } |
|
2790 |
|
2791 QFixed width = fd->size.width; |
|
2792 if (d->document->pageSize().width() == 0 && d->viewportRect.isValid()) { |
|
2793 // we're in NoWrap mode, meaning the frame should expand to the viewport |
|
2794 // so that backgrounds are drawn correctly |
|
2795 fd->size.width = qMax(width, QFixed::fromReal(d->viewportRect.right())); |
|
2796 } |
|
2797 |
|
2798 // Make sure we conform to the root frames bounds when drawing. |
|
2799 d->clipRect = QRectF(fd->position.toPointF(), fd->size.toSizeF()).adjusted(fd->leftMargin.toReal(), 0, -fd->rightMargin.toReal(), 0); |
|
2800 d->drawFrame(QPointF(), painter, context, frame); |
|
2801 fd->size.width = width; |
|
2802 } |
|
2803 |
|
2804 void QTextDocumentLayout::setViewport(const QRectF &viewport) |
|
2805 { |
|
2806 Q_D(QTextDocumentLayout); |
|
2807 d->viewportRect = viewport; |
|
2808 } |
|
2809 |
|
2810 static void markFrames(QTextFrame *current, int from, int oldLength, int length) |
|
2811 { |
|
2812 int end = qMax(oldLength, length) + from; |
|
2813 |
|
2814 if (current->firstPosition() >= end || current->lastPosition() < from) |
|
2815 return; |
|
2816 |
|
2817 QTextFrameData *fd = data(current); |
|
2818 for (int i = 0; i < fd->floats.size(); ++i) { |
|
2819 QTextFrame *f = fd->floats[i]; |
|
2820 if (!f) { |
|
2821 // float got removed in editing operation |
|
2822 fd->floats.removeAt(i); |
|
2823 --i; |
|
2824 } |
|
2825 } |
|
2826 |
|
2827 fd->layoutDirty = true; |
|
2828 fd->sizeDirty = true; |
|
2829 |
|
2830 // qDebug(" marking frame (%d--%d) as dirty", current->firstPosition(), current->lastPosition()); |
|
2831 QList<QTextFrame *> children = current->childFrames(); |
|
2832 for (int i = 0; i < children.size(); ++i) |
|
2833 markFrames(children.at(i), from, oldLength, length); |
|
2834 } |
|
2835 |
|
2836 void QTextDocumentLayout::documentChanged(int from, int oldLength, int length) |
|
2837 { |
|
2838 Q_D(QTextDocumentLayout); |
|
2839 |
|
2840 QTextBlock blockIt = document()->findBlock(from); |
|
2841 QTextBlock endIt = document()->findBlock(qMax(0, from + length - 1)); |
|
2842 if (endIt.isValid()) |
|
2843 endIt = endIt.next(); |
|
2844 for (; blockIt.isValid() && blockIt != endIt; blockIt = blockIt.next()) |
|
2845 blockIt.clearLayout(); |
|
2846 |
|
2847 if (d->docPrivate->pageSize.isNull()) |
|
2848 return; |
|
2849 |
|
2850 QRectF updateRect; |
|
2851 |
|
2852 d->lazyLayoutStepSize = 1000; |
|
2853 d->sizeChangedTimer.stop(); |
|
2854 d->insideDocumentChange = true; |
|
2855 |
|
2856 const int documentLength = d->docPrivate->length(); |
|
2857 const bool fullLayout = (oldLength == 0 && length == documentLength); |
|
2858 const bool smallChange = documentLength > 0 |
|
2859 && (qMax(length, oldLength) * 100 / documentLength) < 5; |
|
2860 |
|
2861 // don't show incremental layout progress (avoid scroll bar flicker) |
|
2862 // if we see only a small change in the document and we're either starting |
|
2863 // a layout run or we're already in progress for that and we haven't seen |
|
2864 // any bigger change previously (showLayoutProgress already false) |
|
2865 if (smallChange |
|
2866 && (d->currentLazyLayoutPosition == -1 || d->showLayoutProgress == false)) |
|
2867 d->showLayoutProgress = false; |
|
2868 else |
|
2869 d->showLayoutProgress = true; |
|
2870 |
|
2871 if (fullLayout) { |
|
2872 d->contentHasAlignment = false; |
|
2873 d->currentLazyLayoutPosition = 0; |
|
2874 d->checkPoints.clear(); |
|
2875 d->layoutStep(); |
|
2876 } else { |
|
2877 d->ensureLayoutedByPosition(from); |
|
2878 updateRect = doLayout(from, oldLength, length); |
|
2879 } |
|
2880 |
|
2881 if (!d->layoutTimer.isActive() && d->currentLazyLayoutPosition != -1) |
|
2882 d->layoutTimer.start(10, this); |
|
2883 |
|
2884 d->insideDocumentChange = false; |
|
2885 |
|
2886 if (d->showLayoutProgress) { |
|
2887 const QSizeF newSize = dynamicDocumentSize(); |
|
2888 if (newSize != d->lastReportedSize) { |
|
2889 d->lastReportedSize = newSize; |
|
2890 emit documentSizeChanged(newSize); |
|
2891 } |
|
2892 } |
|
2893 |
|
2894 if (!updateRect.isValid()) { |
|
2895 // don't use the frame size, it might have shrunken |
|
2896 updateRect = QRectF(QPointF(0, 0), QSizeF(qreal(INT_MAX), qreal(INT_MAX))); |
|
2897 } |
|
2898 |
|
2899 emit update(updateRect); |
|
2900 } |
|
2901 |
|
2902 QRectF QTextDocumentLayout::doLayout(int from, int oldLength, int length) |
|
2903 { |
|
2904 Q_D(QTextDocumentLayout); |
|
2905 |
|
2906 // qDebug("documentChange: from=%d, oldLength=%d, length=%d", from, oldLength, length); |
|
2907 |
|
2908 // mark all frames between f_start and f_end as dirty |
|
2909 markFrames(d->docPrivate->rootFrame(), from, oldLength, length); |
|
2910 |
|
2911 QRectF updateRect; |
|
2912 |
|
2913 QTextFrame *root = d->docPrivate->rootFrame(); |
|
2914 if(data(root)->sizeDirty) |
|
2915 updateRect = d->layoutFrame(root, from, from + length); |
|
2916 data(root)->layoutDirty = false; |
|
2917 |
|
2918 if (d->currentLazyLayoutPosition == -1) |
|
2919 layoutFinished(); |
|
2920 else if (d->showLayoutProgress) |
|
2921 d->sizeChangedTimer.start(0, this); |
|
2922 |
|
2923 return updateRect; |
|
2924 } |
|
2925 |
|
2926 int QTextDocumentLayout::hitTest(const QPointF &point, Qt::HitTestAccuracy accuracy) const |
|
2927 { |
|
2928 Q_D(const QTextDocumentLayout); |
|
2929 d->ensureLayouted(QFixed::fromReal(point.y())); |
|
2930 QTextFrame *f = d->docPrivate->rootFrame(); |
|
2931 int position = 0; |
|
2932 QTextLayout *l = 0; |
|
2933 QFixedPoint pointf; |
|
2934 pointf.x = QFixed::fromReal(point.x()); |
|
2935 pointf.y = QFixed::fromReal(point.y()); |
|
2936 QTextDocumentLayoutPrivate::HitPoint p = d->hitTest(f, pointf, &position, &l, accuracy); |
|
2937 if (accuracy == Qt::ExactHit && p < QTextDocumentLayoutPrivate::PointExact) |
|
2938 return -1; |
|
2939 |
|
2940 // ensure we stay within document bounds |
|
2941 int lastPos = f->lastPosition(); |
|
2942 if (l && !l->preeditAreaText().isEmpty()) |
|
2943 lastPos += l->preeditAreaText().length(); |
|
2944 if (position > lastPos) |
|
2945 position = lastPos; |
|
2946 else if (position < 0) |
|
2947 position = 0; |
|
2948 |
|
2949 return position; |
|
2950 } |
|
2951 |
|
2952 void QTextDocumentLayout::resizeInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format) |
|
2953 { |
|
2954 Q_D(QTextDocumentLayout); |
|
2955 QTextCharFormat f = format.toCharFormat(); |
|
2956 Q_ASSERT(f.isValid()); |
|
2957 QTextObjectHandler handler = d->handlers.value(f.objectType()); |
|
2958 if (!handler.component) |
|
2959 return; |
|
2960 |
|
2961 QSizeF intrinsic = handler.iface->intrinsicSize(d->document, posInDocument, format); |
|
2962 |
|
2963 QTextFrameFormat::Position pos = QTextFrameFormat::InFlow; |
|
2964 QTextFrame *frame = qobject_cast<QTextFrame *>(d->document->objectForFormat(f)); |
|
2965 if (frame) { |
|
2966 pos = frame->frameFormat().position(); |
|
2967 QTextFrameData *fd = data(frame); |
|
2968 fd->sizeDirty = false; |
|
2969 fd->size = QFixedSize::fromSizeF(intrinsic); |
|
2970 fd->minimumWidth = fd->maximumWidth = fd->size.width; |
|
2971 } |
|
2972 |
|
2973 QSizeF inlineSize = (pos == QTextFrameFormat::InFlow ? intrinsic : QSizeF(0, 0)); |
|
2974 item.setWidth(inlineSize.width()); |
|
2975 if (f.verticalAlignment() == QTextCharFormat::AlignMiddle) { |
|
2976 item.setDescent(inlineSize.height() / 2); |
|
2977 item.setAscent(inlineSize.height() / 2 - 1); |
|
2978 } else { |
|
2979 item.setDescent(0); |
|
2980 item.setAscent(inlineSize.height() - 1); |
|
2981 } |
|
2982 } |
|
2983 |
|
2984 void QTextDocumentLayout::positionInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format) |
|
2985 { |
|
2986 Q_D(QTextDocumentLayout); |
|
2987 Q_UNUSED(posInDocument); |
|
2988 if (item.width() != 0) |
|
2989 // inline |
|
2990 return; |
|
2991 |
|
2992 QTextCharFormat f = format.toCharFormat(); |
|
2993 Q_ASSERT(f.isValid()); |
|
2994 QTextObjectHandler handler = d->handlers.value(f.objectType()); |
|
2995 if (!handler.component) |
|
2996 return; |
|
2997 |
|
2998 QTextFrame *frame = qobject_cast<QTextFrame *>(d->document->objectForFormat(f)); |
|
2999 if (!frame) |
|
3000 return; |
|
3001 |
|
3002 QTextBlock b = d->document->findBlock(frame->firstPosition()); |
|
3003 QTextLine line; |
|
3004 if (b.position() <= frame->firstPosition() && b.position() + b.length() > frame->lastPosition()) |
|
3005 line = b.layout()->lineAt(b.layout()->lineCount()-1); |
|
3006 // qDebug() << "layoutObject: line.isValid" << line.isValid() << b.position() << b.length() << |
|
3007 // frame->firstPosition() << frame->lastPosition(); |
|
3008 d->positionFloat(frame, line.isValid() ? &line : 0); |
|
3009 } |
|
3010 |
|
3011 void QTextDocumentLayout::drawInlineObject(QPainter *p, const QRectF &rect, QTextInlineObject item, |
|
3012 int posInDocument, const QTextFormat &format) |
|
3013 { |
|
3014 Q_D(QTextDocumentLayout); |
|
3015 QTextCharFormat f = format.toCharFormat(); |
|
3016 Q_ASSERT(f.isValid()); |
|
3017 QTextFrame *frame = qobject_cast<QTextFrame *>(d->document->objectForFormat(f)); |
|
3018 if (frame && frame->frameFormat().position() != QTextFrameFormat::InFlow) |
|
3019 return; // don't draw floating frames from inline objects here but in drawFlow instead |
|
3020 |
|
3021 // qDebug() << "drawObject at" << r; |
|
3022 QAbstractTextDocumentLayout::drawInlineObject(p, rect, item, posInDocument, format); |
|
3023 } |
|
3024 |
|
3025 int QTextDocumentLayout::dynamicPageCount() const |
|
3026 { |
|
3027 Q_D(const QTextDocumentLayout); |
|
3028 const QSizeF pgSize = d->document->pageSize(); |
|
3029 if (pgSize.height() < 0) |
|
3030 return 1; |
|
3031 return qCeil(dynamicDocumentSize().height() / pgSize.height()); |
|
3032 } |
|
3033 |
|
3034 QSizeF QTextDocumentLayout::dynamicDocumentSize() const |
|
3035 { |
|
3036 Q_D(const QTextDocumentLayout); |
|
3037 return data(d->docPrivate->rootFrame())->size.toSizeF(); |
|
3038 } |
|
3039 |
|
3040 int QTextDocumentLayout::pageCount() const |
|
3041 { |
|
3042 Q_D(const QTextDocumentLayout); |
|
3043 d->ensureLayoutFinished(); |
|
3044 return dynamicPageCount(); |
|
3045 } |
|
3046 |
|
3047 QSizeF QTextDocumentLayout::documentSize() const |
|
3048 { |
|
3049 Q_D(const QTextDocumentLayout); |
|
3050 d->ensureLayoutFinished(); |
|
3051 return dynamicDocumentSize(); |
|
3052 } |
|
3053 |
|
3054 void QTextDocumentLayoutPrivate::ensureLayouted(QFixed y) const |
|
3055 { |
|
3056 Q_Q(const QTextDocumentLayout); |
|
3057 if (currentLazyLayoutPosition == -1) |
|
3058 return; |
|
3059 const QSizeF oldSize = q->dynamicDocumentSize(); |
|
3060 |
|
3061 if (checkPoints.isEmpty()) |
|
3062 layoutStep(); |
|
3063 |
|
3064 while (currentLazyLayoutPosition != -1 |
|
3065 && checkPoints.last().y < y) |
|
3066 layoutStep(); |
|
3067 } |
|
3068 |
|
3069 void QTextDocumentLayoutPrivate::ensureLayoutedByPosition(int position) const |
|
3070 { |
|
3071 if (currentLazyLayoutPosition == -1) |
|
3072 return; |
|
3073 if (position < currentLazyLayoutPosition) |
|
3074 return; |
|
3075 while (currentLazyLayoutPosition != -1 |
|
3076 && currentLazyLayoutPosition < position) { |
|
3077 const_cast<QTextDocumentLayout *>(q_func())->doLayout(currentLazyLayoutPosition, 0, INT_MAX - currentLazyLayoutPosition); |
|
3078 } |
|
3079 } |
|
3080 |
|
3081 void QTextDocumentLayoutPrivate::layoutStep() const |
|
3082 { |
|
3083 ensureLayoutedByPosition(currentLazyLayoutPosition + lazyLayoutStepSize); |
|
3084 lazyLayoutStepSize = qMin(200000, lazyLayoutStepSize * 2); |
|
3085 } |
|
3086 |
|
3087 void QTextDocumentLayout::setCursorWidth(int width) |
|
3088 { |
|
3089 Q_D(QTextDocumentLayout); |
|
3090 d->cursorWidth = width; |
|
3091 } |
|
3092 |
|
3093 int QTextDocumentLayout::cursorWidth() const |
|
3094 { |
|
3095 Q_D(const QTextDocumentLayout); |
|
3096 return d->cursorWidth; |
|
3097 } |
|
3098 |
|
3099 void QTextDocumentLayout::setFixedColumnWidth(int width) |
|
3100 { |
|
3101 Q_D(QTextDocumentLayout); |
|
3102 d->fixedColumnWidth = width; |
|
3103 } |
|
3104 |
|
3105 QRectF QTextDocumentLayout::frameBoundingRect(QTextFrame *frame) const |
|
3106 { |
|
3107 Q_D(const QTextDocumentLayout); |
|
3108 if (d->docPrivate->pageSize.isNull()) |
|
3109 return QRectF(); |
|
3110 d->ensureLayoutFinished(); |
|
3111 return d->frameBoundingRectInternal(frame); |
|
3112 } |
|
3113 |
|
3114 QRectF QTextDocumentLayoutPrivate::frameBoundingRectInternal(QTextFrame *frame) const |
|
3115 { |
|
3116 QPointF pos; |
|
3117 const int framePos = frame->firstPosition(); |
|
3118 QTextFrame *f = frame; |
|
3119 while (f) { |
|
3120 QTextFrameData *fd = data(f); |
|
3121 pos += fd->position.toPointF(); |
|
3122 |
|
3123 if (QTextTable *table = qobject_cast<QTextTable *>(f)) { |
|
3124 QTextTableCell cell = table->cellAt(framePos); |
|
3125 if (cell.isValid()) |
|
3126 pos += static_cast<QTextTableData *>(fd)->cellPosition(cell).toPointF(); |
|
3127 } |
|
3128 |
|
3129 f = f->parentFrame(); |
|
3130 } |
|
3131 return QRectF(pos, data(frame)->size.toSizeF()); |
|
3132 } |
|
3133 |
|
3134 QRectF QTextDocumentLayout::blockBoundingRect(const QTextBlock &block) const |
|
3135 { |
|
3136 Q_D(const QTextDocumentLayout); |
|
3137 if (d->docPrivate->pageSize.isNull()) |
|
3138 return QRectF(); |
|
3139 d->ensureLayoutedByPosition(block.position() + block.length()); |
|
3140 QTextFrame *frame = d->document->frameAt(block.position()); |
|
3141 QPointF offset; |
|
3142 const int blockPos = block.position(); |
|
3143 |
|
3144 while (frame) { |
|
3145 QTextFrameData *fd = data(frame); |
|
3146 offset += fd->position.toPointF(); |
|
3147 |
|
3148 if (QTextTable *table = qobject_cast<QTextTable *>(frame)) { |
|
3149 QTextTableCell cell = table->cellAt(blockPos); |
|
3150 if (cell.isValid()) |
|
3151 offset += static_cast<QTextTableData *>(fd)->cellPosition(cell).toPointF(); |
|
3152 } |
|
3153 |
|
3154 frame = frame->parentFrame(); |
|
3155 } |
|
3156 |
|
3157 const QTextLayout *layout = block.layout(); |
|
3158 QRectF rect = layout->boundingRect(); |
|
3159 rect.moveTopLeft(layout->position() + offset); |
|
3160 return rect; |
|
3161 } |
|
3162 |
|
3163 int QTextDocumentLayout::layoutStatus() const |
|
3164 { |
|
3165 Q_D(const QTextDocumentLayout); |
|
3166 int pos = d->currentLazyLayoutPosition; |
|
3167 if (pos == -1) |
|
3168 return 100; |
|
3169 return pos * 100 / d->document->docHandle()->length(); |
|
3170 } |
|
3171 |
|
3172 void QTextDocumentLayout::timerEvent(QTimerEvent *e) |
|
3173 { |
|
3174 Q_D(QTextDocumentLayout); |
|
3175 if (e->timerId() == d->layoutTimer.timerId()) { |
|
3176 if (d->currentLazyLayoutPosition != -1) |
|
3177 d->layoutStep(); |
|
3178 } else if (e->timerId() == d->sizeChangedTimer.timerId()) { |
|
3179 d->lastReportedSize = dynamicDocumentSize(); |
|
3180 emit documentSizeChanged(d->lastReportedSize); |
|
3181 d->sizeChangedTimer.stop(); |
|
3182 |
|
3183 if (d->currentLazyLayoutPosition == -1) { |
|
3184 const int newCount = dynamicPageCount(); |
|
3185 if (newCount != d->lastPageCount) { |
|
3186 d->lastPageCount = newCount; |
|
3187 emit pageCountChanged(newCount); |
|
3188 } |
|
3189 } |
|
3190 } else { |
|
3191 QAbstractTextDocumentLayout::timerEvent(e); |
|
3192 } |
|
3193 } |
|
3194 |
|
3195 void QTextDocumentLayout::layoutFinished() |
|
3196 { |
|
3197 Q_D(QTextDocumentLayout); |
|
3198 d->layoutTimer.stop(); |
|
3199 if (!d->insideDocumentChange) |
|
3200 d->sizeChangedTimer.start(0, this); |
|
3201 // reset |
|
3202 d->showLayoutProgress = true; |
|
3203 } |
|
3204 |
|
3205 void QTextDocumentLayout::ensureLayouted(qreal y) |
|
3206 { |
|
3207 d_func()->ensureLayouted(QFixed::fromReal(y)); |
|
3208 } |
|
3209 |
|
3210 qreal QTextDocumentLayout::idealWidth() const |
|
3211 { |
|
3212 Q_D(const QTextDocumentLayout); |
|
3213 d->ensureLayoutFinished(); |
|
3214 return d->idealWidth; |
|
3215 } |
|
3216 |
|
3217 bool QTextDocumentLayout::contentHasAlignment() const |
|
3218 { |
|
3219 Q_D(const QTextDocumentLayout); |
|
3220 return d->contentHasAlignment; |
|
3221 } |
|
3222 |
|
3223 qreal QTextDocumentLayoutPrivate::scaleToDevice(qreal value) const |
|
3224 { |
|
3225 if (!paintDevice) |
|
3226 return value; |
|
3227 return value * paintDevice->logicalDpiY() / qreal(qt_defaultDpi()); |
|
3228 } |
|
3229 |
|
3230 QFixed QTextDocumentLayoutPrivate::scaleToDevice(QFixed value) const |
|
3231 { |
|
3232 if (!paintDevice) |
|
3233 return value; |
|
3234 return value * QFixed(paintDevice->logicalDpiY()) / QFixed(qt_defaultDpi()); |
|
3235 } |
|
3236 |
|
3237 QT_END_NAMESPACE |
|
3238 |
|
3239 #include "moc_qtextdocumentlayout_p.cpp" |