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1 /* |
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2 * Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 |
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19 #include "FRMPAGE.H" |
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20 #include "FRMCONST.H" |
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21 |
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22 #ifdef SYMBIAN_ENABLE_SPLIT_HEADERS |
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23 #include "FRMCONST_INTERNAL.H" |
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24 #include "FRMCONST_PARTNER.H" |
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25 #endif |
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26 |
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27 TLinePaginator::TLinePaginator(): |
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28 iPageList(NULL), |
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29 iDocPos(0), |
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30 iKeepWithPrev(ETrue), |
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31 iPageHeight(0), |
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32 iHeightRem(0), |
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33 iBreakOnPage(EFalse), |
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34 iPrevPageBreak(0), |
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35 iHeightLines(0), |
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36 iFirstLine(ETrue) |
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37 { |
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38 } |
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39 |
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40 TBool TLinePaginator::AppendLineL(TPageLine aLine) |
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41 // |
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42 { |
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43 TBool pageBreak=EFalse; |
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44 |
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45 if(aLine.iStartNewPage && !iFirstLine) |
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46 { |
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47 SetPotentialBreakPoint(aLine.iDocPos); |
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48 InsertPageBreakL(); |
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49 pageBreak=ETrue; |
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50 } |
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51 else |
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52 { |
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53 if (!iKeepWithPrev) |
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54 SetPotentialBreakPoint(aLine.iDocPos); |
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55 if (iHeightRem<iHeightLines+aLine.iLineHeight /*&& !iFirstLine*/) |
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56 { |
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57 pageBreak=ETrue; |
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58 //__ASSERT_DEBUG(!iFirstLine || !iBreakOnPage,Panic()); //### |
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59 if (iBreakOnPage) |
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60 { |
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61 InsertPageBreakL(); |
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62 if (aLine.iLineHeight > iHeightRem) |
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63 { |
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64 if (iHeightLines!=0) |
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65 { |
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66 SetPotentialBreakPoint(aLine.iDocPos); |
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67 InsertPageBreakL(); |
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68 } |
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69 CheckTallLineL(aLine); |
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70 } |
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71 } |
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72 else |
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73 { |
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74 if (!iFirstLine) |
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75 { |
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76 SetPotentialBreakPoint(aLine.iDocPos); |
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77 InsertPageBreakL(); |
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78 } |
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79 CheckTallLineL(aLine); //This picks up tall lines at the start of the document the above one picks up the rest |
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80 } |
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81 } |
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82 } |
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83 |
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84 iFirstLine=EFalse; |
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85 iHeightLines+=aLine.iLineHeight; |
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86 iKeepWithPrev=aLine.iKeepWithNext; |
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87 return pageBreak; |
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88 } |
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89 |
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90 void TLinePaginator::InsertPageBreakL() |
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91 { |
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92 iBreakOnPage=EFalse; |
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93 iHeightRem=iPageHeight; |
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94 iKeepWithPrev=EFalse; |
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95 TInt deltaDocPos=iDocPos-iPrevPageBreak; |
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96 __ASSERT_DEBUG(deltaDocPos>0,FormPanic(EFInvalidNumberCharsOnPage)); |
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97 iPageList->AppendL(deltaDocPos); |
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98 iPrevPageBreak=iDocPos; |
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99 } |
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100 |
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101 void TLinePaginator::CheckTallLineL(TPageLine& aLine) |
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102 { |
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103 while (aLine.iLineHeight>iPageHeight) |
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104 { |
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105 aLine.iLineHeight-=iPageHeight; |
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106 iPageList->AppendL(0); |
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107 } |
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108 } |
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109 |
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110 void TLinePaginator::FlushL(TInt aEndDocPos) |
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111 { |
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112 SetPotentialBreakPoint(aEndDocPos); |
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113 InsertPageBreakL(); |
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114 } |
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115 |
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116 void TLinePaginator::SetPageHeight(TInt aPageHeight) |
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117 { |
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118 iPageHeight=aPageHeight; |
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119 iHeightRem=aPageHeight; |
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120 Reset(); |
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121 } |
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122 |
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123 // It is expected that the array passed in will be an empty one |
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124 void TLinePaginator::SetArray(CArrayFix<TInt>* aCharsPerPage) |
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125 { |
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126 iPageList=aCharsPerPage; |
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127 |
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128 // reset if the array is not (for some reason) already cleared. |
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129 if (iPageList->Count() > 0) |
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130 Reset(); |
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131 } |
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132 |
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133 void TLinePaginator::Reset() |
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134 { |
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135 iBreakOnPage=EFalse; |
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136 iKeepWithPrev=ETrue; |
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137 iPrevPageBreak=iDocPos=0; |
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138 iFirstLine=ETrue; |
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139 iHeightRem=iPageHeight; |
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140 |
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141 ResetArray(); |
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142 } |
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143 |
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144 void TLinePaginator::ResetArray() |
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145 { |
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146 iPageList->Reset(); |
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147 iPageList->Compress(); |
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148 } |
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149 |
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150 void TLinePaginator::SetPotentialBreakPoint(TInt aDocPos) |
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151 { |
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152 iBreakOnPage=ETrue; |
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153 iDocPos=aDocPos; |
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154 iHeightRem-=iHeightLines; |
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155 iHeightLines=0; |
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156 } |