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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 #ifndef QMDIAREA_P_H |
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43 #define QMDIAREA_P_H |
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44 |
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45 // |
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46 // W A R N I N G |
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47 // ------------- |
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48 // |
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49 // This file is not part of the Qt API. It exists purely as an |
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50 // implementation detail. This header file may change from version to |
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51 // version without notice, or even be removed. |
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52 // |
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53 // We mean it. |
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54 // |
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55 |
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56 #include "qmdiarea.h" |
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57 #include "qmdisubwindow.h" |
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58 |
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59 #ifndef QT_NO_MDIAREA |
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60 |
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61 #include <QList> |
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62 #include <QRect> |
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63 #include <QPoint> |
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64 #include <QtGui/qapplication.h> |
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65 #include <private/qmdisubwindow_p.h> |
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66 #include <private/qabstractscrollarea_p.h> |
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67 |
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68 QT_BEGIN_NAMESPACE |
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69 |
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70 namespace QMdi { |
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71 class Rearranger |
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72 { |
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73 public: |
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74 enum Type { |
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75 RegularTiler, |
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76 SimpleCascader, |
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77 IconTiler |
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78 }; |
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79 |
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80 // Rearranges widgets relative to domain. |
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81 virtual void rearrange(QList<QWidget *> &widgets, const QRect &domain) const = 0; |
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82 virtual Type type() const = 0; |
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83 virtual ~Rearranger() {} |
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84 }; |
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85 |
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86 class RegularTiler : public Rearranger |
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87 { |
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88 // Rearranges widgets according to a regular tiling pattern |
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89 // covering the entire domain. |
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90 // Both positions and sizes may change. |
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91 void rearrange(QList<QWidget *> &widgets, const QRect &domain) const; |
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92 inline Type type() const { return Rearranger::RegularTiler; } |
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93 }; |
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94 |
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95 class SimpleCascader : public Rearranger |
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96 { |
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97 // Rearranges widgets according to a simple, regular cascading pattern. |
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98 // Widgets are resized to minimumSize. |
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99 // Both positions and sizes may change. |
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100 void rearrange(QList<QWidget *> &widgets, const QRect &domain) const; |
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101 inline Type type() const { return Rearranger::SimpleCascader; } |
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102 }; |
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103 |
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104 class IconTiler : public Rearranger |
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105 { |
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106 // Rearranges icons (assumed to be the same size) according to a regular |
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107 // tiling pattern filling up the domain from the bottom. |
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108 // Only positions may change. |
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109 void rearrange(QList<QWidget *> &widgets, const QRect &domain) const; |
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110 inline Type type() const { return Rearranger::IconTiler; } |
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111 }; |
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112 |
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113 class Placer |
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114 { |
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115 public: |
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116 // Places the rectangle defined by 'size' relative to 'rects' and 'domain'. |
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117 // Returns the position of the resulting rectangle. |
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118 virtual QPoint place( |
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119 const QSize &size, const QList<QRect> &rects, const QRect &domain) const = 0; |
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120 virtual ~Placer() {} |
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121 }; |
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122 |
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123 class MinOverlapPlacer : public Placer |
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124 { |
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125 QPoint place(const QSize &size, const QList<QRect> &rects, const QRect &domain) const; |
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126 static int accumulatedOverlap(const QRect &source, const QList<QRect> &rects); |
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127 static QRect findMinOverlapRect(const QList<QRect> &source, const QList<QRect> &rects); |
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128 static void getCandidatePlacements( |
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129 const QSize &size, const QList<QRect> &rects, const QRect &domain, |
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130 QList<QRect> &candidates); |
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131 static QPoint findBestPlacement( |
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132 const QRect &domain, const QList<QRect> &rects, QList<QRect> &source); |
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133 static void findNonInsiders( |
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134 const QRect &domain, QList<QRect> &source, QList<QRect> &result); |
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135 static void findMaxOverlappers( |
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136 const QRect &domain, const QList<QRect> &source, QList<QRect> &result); |
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137 }; |
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138 } // namespace QMdi |
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139 |
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140 class QMdiAreaTabBar; |
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141 class QMdiAreaPrivate : public QAbstractScrollAreaPrivate |
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142 { |
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143 Q_DECLARE_PUBLIC(QMdiArea) |
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144 public: |
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145 QMdiAreaPrivate(); |
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146 |
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147 // Variables. |
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148 QMdi::Rearranger *cascader; |
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149 QMdi::Rearranger *regularTiler; |
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150 QMdi::Rearranger *iconTiler; |
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151 QMdi::Placer *placer; |
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152 #ifndef QT_NO_RUBBERBAND |
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153 QRubberBand *rubberBand; |
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154 #endif |
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155 QMdiAreaTabBar *tabBar; |
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156 QList<QMdi::Rearranger *> pendingRearrangements; |
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157 QList< QPointer<QMdiSubWindow> > pendingPlacements; |
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158 QList< QPointer<QMdiSubWindow> > childWindows; |
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159 QList<int> indicesToActivatedChildren; |
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160 QPointer<QMdiSubWindow> active; |
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161 QPointer<QMdiSubWindow> aboutToBecomeActive; |
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162 QBrush background; |
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163 QMdiArea::WindowOrder activationOrder; |
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164 QMdiArea::AreaOptions options; |
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165 QMdiArea::ViewMode viewMode; |
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166 #ifndef QT_NO_TABBAR |
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167 bool documentMode; |
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168 #endif |
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169 #ifndef QT_NO_TABWIDGET |
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170 QTabWidget::TabShape tabShape; |
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171 QTabWidget::TabPosition tabPosition; |
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172 #endif |
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173 bool ignoreGeometryChange; |
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174 bool ignoreWindowStateChange; |
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175 bool isActivated; |
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176 bool isSubWindowsTiled; |
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177 bool showActiveWindowMaximized; |
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178 bool tileCalledFromResizeEvent; |
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179 bool updatesDisabledByUs; |
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180 bool inViewModeChange; |
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181 int indexToNextWindow; |
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182 int indexToPreviousWindow; |
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183 int indexToHighlighted; |
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184 int indexToLastActiveTab; |
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185 int resizeTimerId; |
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186 int tabToPreviousTimerId; |
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187 |
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188 // Slots. |
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189 void _q_deactivateAllWindows(QMdiSubWindow *aboutToActivate = 0); |
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190 void _q_processWindowStateChanged(Qt::WindowStates oldState, Qt::WindowStates newState); |
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191 void _q_currentTabChanged(int index); |
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192 |
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193 // Functions. |
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194 void appendChild(QMdiSubWindow *child); |
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195 void place(QMdi::Placer *placer, QMdiSubWindow *child); |
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196 void rearrange(QMdi::Rearranger *rearranger); |
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197 void arrangeMinimizedSubWindows(); |
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198 void activateWindow(QMdiSubWindow *child); |
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199 void activateCurrentWindow(); |
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200 void activateHighlightedWindow(); |
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201 void emitWindowActivated(QMdiSubWindow *child); |
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202 void resetActiveWindow(QMdiSubWindow *child = 0); |
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203 void updateActiveWindow(int removedIndex, bool activeRemoved); |
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204 void updateScrollBars(); |
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205 void internalRaise(QMdiSubWindow *child) const; |
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206 bool scrollBarsEnabled() const; |
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207 bool lastWindowAboutToBeDestroyed() const; |
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208 void setChildActivationEnabled(bool enable = true, bool onlyNextActivationEvent = false) const; |
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209 QRect resizeToMinimumTileSize(const QSize &minSubWindowSize, int subWindowCount); |
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210 void scrollBarPolicyChanged(Qt::Orientation, Qt::ScrollBarPolicy); // reimp |
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211 QMdiSubWindow *nextVisibleSubWindow(int increaseFactor, QMdiArea::WindowOrder, |
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212 int removed = -1, int fromIndex = -1) const; |
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213 void highlightNextSubWindow(int increaseFactor); |
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214 QList<QMdiSubWindow *> subWindowList(QMdiArea::WindowOrder, bool reversed = false) const; |
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215 void disconnectSubWindow(QObject *subWindow); |
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216 void setViewMode(QMdiArea::ViewMode mode); |
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217 #ifndef QT_NO_TABBAR |
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218 void updateTabBarGeometry(); |
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219 void refreshTabBar(); |
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220 #endif |
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221 |
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222 inline void startResizeTimer() |
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223 { |
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224 Q_Q(QMdiArea); |
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225 if (resizeTimerId > 0) |
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226 q->killTimer(resizeTimerId); |
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227 resizeTimerId = q->startTimer(200); |
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228 } |
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229 |
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230 inline void startTabToPreviousTimer() |
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231 { |
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232 Q_Q(QMdiArea); |
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233 if (tabToPreviousTimerId > 0) |
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234 q->killTimer(tabToPreviousTimerId); |
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235 tabToPreviousTimerId = q->startTimer(QApplication::keyboardInputInterval()); |
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236 } |
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237 |
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238 inline bool windowStaysOnTop(QMdiSubWindow *subWindow) const |
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239 { |
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240 if (!subWindow) |
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241 return false; |
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242 return subWindow->windowFlags() & Qt::WindowStaysOnTopHint; |
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243 } |
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244 |
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245 inline bool isExplicitlyDeactivated(QMdiSubWindow *subWindow) const |
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246 { |
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247 if (!subWindow) |
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248 return true; |
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249 return subWindow->d_func()->isExplicitlyDeactivated; |
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250 } |
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251 |
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252 inline void setActive(QMdiSubWindow *subWindow, bool active = true, bool changeFocus = true) const |
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253 { |
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254 if (subWindow) |
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255 subWindow->d_func()->setActive(active, changeFocus); |
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256 } |
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257 |
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258 #ifndef QT_NO_RUBBERBAND |
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259 inline void showRubberBandFor(QMdiSubWindow *subWindow) |
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260 { |
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261 if (!subWindow || !rubberBand) |
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262 return; |
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263 rubberBand->setGeometry(subWindow->geometry()); |
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264 rubberBand->raise(); |
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265 rubberBand->show(); |
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266 } |
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267 |
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268 inline void hideRubberBand() |
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269 { |
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270 if (rubberBand && rubberBand->isVisible()) |
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271 rubberBand->hide(); |
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272 indexToHighlighted = -1; |
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273 } |
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274 #endif // QT_NO_RUBBERBAND |
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275 }; |
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276 |
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277 #endif // QT_NO_MDIAREA |
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278 |
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279 QT_END_NAMESPACE |
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280 |
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281 #endif // QMDIAREA_P_H |