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1 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #include "directgdiadapter.h" |
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17 #include "swdirectgdiengine.h" |
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18 #include "swdirectgdiellipse.h" |
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19 |
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20 /** |
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21 @see MDirectGdiEngine::Clear(const TRect&) |
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22 */ |
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23 void CSwDirectGdiEngine::Clear(const TRect& aRect) |
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24 { |
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25 TRect rcpy(aRect); |
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26 rcpy.Move(iOrigin); |
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27 |
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28 DirectGdi::TBrushStyle tempbrushstyle = iBrushStyle; |
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29 iBrushStyle = DirectGdi::ESolidBrush; |
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30 |
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31 RectFill(rcpy); |
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32 |
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33 iBrushStyle = tempbrushstyle; |
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34 } |
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35 |
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36 /** |
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37 @see MDirectGdiEngine::Clear() |
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38 */ |
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39 void CSwDirectGdiEngine::Clear() |
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40 { |
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41 TRect deviceRect; |
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42 iDrawDevice->GetDrawRect(deviceRect); |
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43 if ((iOrigin.iX!=0) || (iOrigin.iY!=0)) |
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44 { |
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45 deviceRect.Move(-iOrigin); |
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46 } |
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47 Clear(deviceRect); |
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48 } |
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49 |
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50 /** |
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51 @see MDirectGdiEngine::Plot() |
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52 */ |
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53 void CSwDirectGdiEngine::Plot(const TPoint& aPoint) |
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54 { |
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55 TRect targetRect(aPoint + iOrigin, TSize(1,1)); |
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56 targetRect.Grow((iPenSize.iWidth >> 1) + 1,(iPenSize.iHeight >> 1) + 1); |
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57 DoPlot(aPoint); |
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58 } |
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59 |
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60 /** |
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61 Draws a single point. |
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62 |
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63 @see Plot() |
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64 |
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65 @param aPoint The location to plot at. |
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66 @panic DGDIAdapter 1013, if the point being plotted is out of bounds of the target (debug only). |
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67 */ |
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68 void CSwDirectGdiEngine::DoPlot(const TPoint& aPoint) |
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69 { |
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70 const TSize oneByOne(1,1); |
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71 const TPoint point(aPoint + iOrigin); |
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72 |
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73 TRect temp(point,oneByOne); |
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74 if (iPenSize.iWidth > 1 || iPenSize.iHeight > 1) |
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75 { |
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76 temp.Grow(iPenSize.iWidth >> 1, iPenSize.iHeight >> 1); |
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77 } |
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78 |
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79 const DirectGdi::TPenStyle oldPenStyle = iPenStyle; |
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80 iPenStyle = DirectGdi::ESolidPen; |
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81 |
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82 #if defined(_DEBUG) |
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83 TRect deviceRect; |
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84 iDrawDevice->GetDrawRect(deviceRect); |
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85 #endif |
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86 |
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87 TRect clipRect; |
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88 const TInt limit = iDefaultRegionPtr->Count(); |
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89 for (TInt count = 0; count < limit; count++) |
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90 { |
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91 clipRect = (*iDefaultRegionPtr)[count]; |
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92 if (!clipRect.Intersects(temp)) |
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93 { |
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94 continue; |
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95 } |
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96 |
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97 clipRect.Intersection(temp); |
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98 if (iPenSize == oneByOne) |
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99 { |
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100 if (clipRect.Contains(point)) |
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101 { |
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102 GRAPHICS_ASSERT_DEBUG(point.iX >= deviceRect.iTl.iX, EDirectGdiPanicOutOfBounds); |
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103 GRAPHICS_ASSERT_DEBUG(point.iY >= deviceRect.iTl.iY, EDirectGdiPanicOutOfBounds); |
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104 GRAPHICS_ASSERT_DEBUG(point.iX <= deviceRect.iBr.iX, EDirectGdiPanicOutOfBounds); |
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105 GRAPHICS_ASSERT_DEBUG(point.iY <= deviceRect.iBr.iY, EDirectGdiPanicOutOfBounds); |
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106 |
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107 iDrawDevice->WriteRgb(point.iX,point.iY,iPenColor, GcDrawMode(iDrawMode)); |
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108 } |
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109 } |
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110 else |
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111 { |
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112 PenDrawClipped(point, clipRect); |
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113 } |
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114 |
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115 iDrawDevice->UpdateRegion(clipRect); |
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116 } |
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117 |
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118 iPenStyle = oldPenStyle; |
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119 } |
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120 |
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121 /** |
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122 Clips the horizontal drawing of a line between two points. |
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123 The vertical location must be inside the clip rect. |
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124 |
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125 @param aLeft The left hand side coordinate. |
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126 @param aRight The right hand side coordinate. |
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127 @param aClipRect The rectangle to which the line is clipped. |
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128 */ |
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129 void CSwDirectGdiEngine::ClipFillLine(TPoint aLeft,TPoint aRight, TRect aClipRect) |
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130 { |
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131 if (aLeft.iY < aClipRect.iTl.iY || aLeft.iY >= aClipRect.iBr.iY) |
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132 return; |
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133 |
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134 aLeft.iX = Max(aLeft.iX,aClipRect.iTl.iX); |
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135 aRight.iX = Min(aRight.iX,aClipRect.iBr.iX-1); |
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136 if (aLeft.iX > aRight.iX) |
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137 { |
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138 return; |
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139 } |
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140 |
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141 TInt xcoord = aLeft.iX; |
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142 TInt length = aRight.iX - aLeft.iX + 1; |
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143 TPoint origin(iOrigin + iBrushOrigin); |
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144 const CGraphicsContext::TDrawMode drawMode = GcDrawMode(iDrawMode); |
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145 |
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146 switch(iBrushStyle) |
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147 { |
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148 case DirectGdi::ESolidBrush: |
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149 iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode); |
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150 return; |
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151 case DirectGdi::EPatternedBrush: |
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152 { |
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153 iBrushBitmap.BeginDataAccess(); |
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154 CBitwiseBitmap* brushBitmap = iBrushBitmap.Address(); |
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155 if (brushBitmap) |
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156 { |
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157 TRect sourcerect(aLeft,TSize(length,1)); |
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158 sourcerect.Move(-origin); |
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159 DoBitBlt(aLeft,brushBitmap,iBrushBitmap.DataAddress(),iBrushBitmap.DataStride(),sourcerect); |
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160 } |
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161 iBrushBitmap.EndDataAccess(ETrue); |
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162 return; |
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163 } |
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164 case DirectGdi::EHorizontalHatchBrush: |
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165 iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode); |
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166 if (Abs((aLeft.iY - origin.iY) % 3) == 2) |
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167 iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iPenColor,drawMode); |
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168 return; |
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169 case DirectGdi::EVerticalHatchBrush: |
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170 iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode); |
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171 while (Abs((xcoord - origin.iX) % 3) != 2) |
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172 xcoord++; |
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173 for (; xcoord < aLeft.iX + length; xcoord += 3) |
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174 iDrawDevice->WriteRgb(xcoord,aLeft.iY,iPenColor,drawMode); |
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175 return; |
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176 case DirectGdi::ESquareCrossHatchBrush: |
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177 iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode); |
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178 if (Abs((aLeft.iY - origin.iY) % 3) == 2) |
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179 iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iPenColor,drawMode); |
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180 else |
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181 { |
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182 while (Abs((xcoord - origin.iX) % 3) != 2) |
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183 xcoord++; |
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184 for (; xcoord < aLeft.iX + length; xcoord += 3) |
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185 iDrawDevice->WriteRgb(xcoord,aLeft.iY,iPenColor,drawMode); |
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186 } |
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187 return; |
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188 case DirectGdi::EForwardDiagonalHatchBrush: |
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189 { |
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190 iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode); |
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191 TInt diff = (origin.iX + origin.iY - aLeft.iX - aLeft.iY) % 3; |
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192 if (diff < 0) |
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193 diff += 3; |
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194 xcoord += diff; |
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195 for (; xcoord < aLeft.iX + length; xcoord += 3) |
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196 iDrawDevice->WriteRgb(xcoord,aLeft.iY,iPenColor,drawMode); |
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197 } |
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198 return; |
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199 case DirectGdi::ERearwardDiagonalHatchBrush: |
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200 { |
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201 iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode); |
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202 TInt diff = (origin.iX - origin.iY - aLeft.iX + aLeft.iY) % 3; |
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203 if (diff < 0) |
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204 diff += 3; |
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205 xcoord += diff; |
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206 for (; xcoord < aLeft.iX + length; xcoord += 3) |
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207 iDrawDevice->WriteRgb(xcoord,aLeft.iY,iPenColor,drawMode); |
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208 } |
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209 return; |
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210 case DirectGdi::EDiamondCrossHatchBrush: |
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211 { |
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212 iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode); |
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213 TInt sum = aLeft.iX + aLeft.iY - origin.iX - origin.iY; |
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214 for (; xcoord < aLeft.iX + length; xcoord++,sum++) |
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215 if ((sum & 1) == 0 && ((sum & 3) != 0 || ((xcoord-origin.iX) & 1) == 1)) |
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216 iDrawDevice->WriteRgb(xcoord,aLeft.iY,iPenColor,drawMode); |
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217 } |
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218 return; |
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219 default: |
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220 return; |
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221 } |
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222 } |
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223 |
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224 /** |
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225 Creates the pen using the current pen size. |
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226 |
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227 @return KErrNoMermory if memory could not be allocated, KErrNone otherwise. |
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228 */ |
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229 TInt CSwDirectGdiEngine::PenAllocate() |
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230 { |
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231 ResetPenArray(); |
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232 |
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233 if (iPenSize.iWidth == 1 && iPenSize.iHeight == 1) |
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234 { |
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235 return KErrNone; |
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236 } |
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237 |
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238 const TInt doublePenHeight = iPenSize.iHeight << 1; |
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239 |
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240 TInt* penArray = new TInt[doublePenHeight]; |
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241 if (penArray == NULL) |
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242 { |
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243 return KErrNoMemory; |
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244 } |
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245 |
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246 SetPenArray(penArray); |
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247 |
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248 if (iPenSize.iWidth == 1 || iPenSize.iWidth == 2 || iPenSize.iHeight == 1 || iPenSize.iHeight == 2) |
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249 { |
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250 for (TInt count = 0; count < iPenSize.iHeight; count += 2) |
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251 { |
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252 iPenArray[doublePenHeight - count - 2] = 0; |
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253 iPenArray[doublePenHeight - count - 1] = iPenSize.iWidth - 1; |
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254 iPenArray[count] = 0; |
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255 iPenArray[count + 1] = iPenSize.iWidth - 1; |
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256 } |
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257 } |
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258 else |
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259 { |
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260 TPoint tl,tr,bl,br; |
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261 TSwDirectGdiEllipse ellipse; |
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262 ellipse.Construct(TRect(iPenSize)); |
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263 for (TInt count = 0; count < iPenSize.iHeight; count += 2) |
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264 { |
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265 //coverity[check_return] |
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266 //coverity[unchecked_value] |
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267 ellipse.NextStep(tl,tr,bl,br); |
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268 iPenArray[doublePenHeight - count - 2] = bl.iX; |
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269 iPenArray[doublePenHeight - count - 1] = br.iX; |
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270 iPenArray[count] = tl.iX; |
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271 iPenArray[count + 1] = tr.iX; |
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272 } |
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273 } |
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274 |
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275 return KErrNone; |
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276 } |
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277 |
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278 /** |
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279 Draws at a given point using the current settings, if within clipping rectangle. |
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280 |
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281 @pre The pen size is greater than one. |
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282 |
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283 @param aPoint The location to draw at. |
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284 @param aClipRect The clipping rectangle. |
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285 @panic DGDIAdapter 1016, if the current pen size is zero (debug only). |
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286 */ |
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287 void CSwDirectGdiEngine::PenDrawClipped(TPoint aPoint, const TRect& aClipRect) |
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288 { |
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289 GRAPHICS_ASSERT_DEBUG(iPenSize.iWidth > 0,EDirectGdiPanicZeroLength); |
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290 GRAPHICS_ASSERT_DEBUG(iPenSize.iHeight > 0,EDirectGdiPanicZeroLength); |
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291 |
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292 aPoint.iX -= ((iPenSize.iWidth - 1) >> 1); |
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293 aPoint.iY -= ((iPenSize.iHeight - 1) >> 1); |
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294 |
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295 if (iPenSize.iWidth == 1 && iPenSize.iHeight == 1) |
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296 { |
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297 if ( (iPenStyle == DirectGdi::ESolidPen || (iDotMask & (1 << (iDotParam % iDotLength)))) && |
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298 aClipRect.Contains(aPoint) ) |
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299 { |
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300 iDrawDevice->WriteRgb(aPoint.iX, aPoint.iY, iPenColor, GcDrawMode(iDrawMode)); |
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301 } |
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302 } |
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303 else if (iPenArray != NULL) |
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304 { |
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305 TInt yCoord = aPoint.iY; |
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306 const TInt maxdim = Max(iPenSize.iWidth,iPenSize.iHeight); |
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307 const TInt doublePenHeight = iPenSize.iHeight << 1; |
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308 |
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309 if (iPenStyle == DirectGdi::ESolidPen || (iDotMask & (1 << ((iDotParam / maxdim) % iDotLength)))) |
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310 { |
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311 for (TInt ix = 0; ix < doublePenHeight; yCoord++, ix += 2) |
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312 { |
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313 if (yCoord >= aClipRect.iTl.iY && yCoord < aClipRect.iBr.iY) |
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314 { |
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315 TInt left = aPoint.iX + iPenArray[ix]; |
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316 TInt right = aPoint.iX + iPenArray[ix+1]; |
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317 if (left < aClipRect.iTl.iX) |
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318 { |
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319 left = aClipRect.iTl.iX; |
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320 } |
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321 if (right >= aClipRect.iBr.iX) |
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322 { |
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323 right = aClipRect.iBr.iX - 1; |
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324 } |
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325 if (left <= right) |
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326 { |
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327 iDrawDevice->WriteRgbMulti(left, yCoord, right - left + 1, 1, iPenColor, CGraphicsContext::EDrawModePEN); |
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328 } |
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329 } |
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330 } |
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331 } |
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332 } |
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333 else |
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334 { |
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335 TPoint tl,tr,bl,br; |
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336 TSwDirectGdiEllipse ellipse; |
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337 ellipse.Construct(TRect(aPoint,iPenSize)); |
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338 while (!ellipse.NextStep(tl,tr,bl,br)) |
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339 { |
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340 if (tl.iY >= aClipRect.iTl.iY && tl.iY < aClipRect.iBr.iY) |
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341 { |
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342 if (tl.iX < aClipRect.iTl.iX) |
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343 { |
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344 tl.iX = aClipRect.iTl.iX; |
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345 } |
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346 if (tr.iX >= aClipRect.iBr.iX) |
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347 { |
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348 tr.iX = aClipRect.iBr.iX-1; |
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349 } |
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350 if (tl.iX <= tr.iX) |
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351 { |
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352 iDrawDevice->WriteRgbMulti(tl.iX,tl.iY,tr.iX - tl.iX + 1,1,iPenColor,CGraphicsContext::EDrawModePEN); |
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353 } |
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354 } |
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355 if (bl.iY >= aClipRect.iTl.iY && bl.iY < aClipRect.iBr.iY) |
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356 { |
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357 if (bl.iX < aClipRect.iTl.iX) |
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358 { |
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359 bl.iX = aClipRect.iTl.iX; |
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360 } |
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361 if (br.iX >= aClipRect.iBr.iX) |
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362 { |
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363 br.iX = aClipRect.iBr.iX - 1; |
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364 } |
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365 if (bl.iX <= br.iX) |
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366 { |
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367 iDrawDevice->WriteRgbMulti(bl.iX,bl.iY,br.iX - bl.iX + 1,1,iPenColor,CGraphicsContext::EDrawModePEN); |
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368 } |
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369 } |
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370 } |
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371 |
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372 if (tl.iY == bl.iY && tl.iY >= aClipRect.iTl.iY && tl.iY < aClipRect.iBr.iY) |
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373 { |
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374 if (tl.iX < aClipRect.iTl.iX) |
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375 { |
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376 tl.iX = aClipRect.iTl.iX; |
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377 } |
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378 if (tr.iX >= aClipRect.iBr.iX) |
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379 { |
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380 tr.iX = aClipRect.iBr.iX - 1; |
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381 } |
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382 if (tl.iX <= tr.iX) |
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383 { |
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384 iDrawDevice->WriteRgbMulti(tl.iX,tl.iY,tr.iX - tl.iX + 1,1, iPenColor, CGraphicsContext::EDrawModePEN); |
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385 } |
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386 } |
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387 } |
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388 } |
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389 |
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390 /** |
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391 @panic DGDIAdapter 1016, if the current pen size is zero (debug only). |
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392 */ |
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393 void CSwDirectGdiEngine::PenDrawDeferred(TPoint aPoint,TInt* aArray, TInt aFirstElement) |
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394 { |
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395 GRAPHICS_ASSERT_DEBUG(iPenArray,EDirectGdiPanicZeroLength); |
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396 GRAPHICS_ASSERT_DEBUG(iPenSize.iWidth > 0,EDirectGdiPanicZeroLength); |
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397 GRAPHICS_ASSERT_DEBUG(iPenSize.iHeight > 0,EDirectGdiPanicZeroLength); |
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398 |
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399 aPoint.iX -= ((iPenSize.iWidth - 1) >> 1); |
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400 const TInt doublepenheight = iPenSize.iHeight << 1; |
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401 |
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402 for (TInt ix = 0; ix < doublepenheight; ix++,aFirstElement++) |
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403 { |
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404 if (aFirstElement == doublepenheight) |
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405 { |
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406 aFirstElement = 0; |
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407 } |
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408 TInt newval = aPoint.iX + iPenArray[ix]; |
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409 if (newval < aArray[aFirstElement]) |
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410 { |
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411 aArray[aFirstElement] = newval; |
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412 } |
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413 |
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414 ix++; |
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415 aFirstElement++; |
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416 newval = aPoint.iX + iPenArray[ix]; |
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417 if (newval > aArray[aFirstElement]) |
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418 { |
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419 aArray[aFirstElement] = newval; |
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420 } |
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421 } |
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422 } |