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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 "swdirectgdiengine.h" |
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17 #include "swdirectgdidriverimpl.h" |
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18 #include "directgdiadapter.h" |
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19 #include <bitdrawinterfaceid.h> |
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20 #include <bmalphablend.h> |
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21 #include <graphics/bitmap.inl> |
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22 #include <graphics/gdi/gdiinline.inl> |
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23 |
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24 /** |
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25 @see MDirectGdiEngine::BitBlt() |
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26 @panic DGDIAdapter 7, aBitmap is invalid (debug only). |
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27 */ |
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28 void CSwDirectGdiEngine::BitBlt(const TPoint& aDestPos, |
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29 const CFbsBitmap& aBitmap, |
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30 const TRect& aSrceRect) |
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31 { |
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32 if (aBitmap.ExtendedBitmapType() != KNullUid) |
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33 { |
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34 iDriver->SetError(KErrNotSupported); // Not supported for extended bitmaps |
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35 return; |
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36 } |
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37 |
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38 TRect srceRect(aSrceRect); |
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39 const TPoint destPoint(aDestPos + iOrigin + srceRect.iTl - aSrceRect.iTl); |
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40 const TPoint offset(srceRect.iTl - destPoint); |
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41 |
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42 TRect targetRect(destPoint,srceRect.Size()); |
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43 aBitmap.BeginDataAccess(); |
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44 |
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45 CBitwiseBitmap* srce = static_cast<const CSwDirectGdiBitmap&>(aBitmap).Address(); |
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46 GRAPHICS_ASSERT_DEBUG(srce,EDirectGdiPanicInvalidBitmap); |
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47 |
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48 const TInt limit = iDefaultRegionPtr->Count(); |
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49 |
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50 TBool opaqueSource = (!IsAlphaChannel(aBitmap.DisplayMode())) && (iDrawMode == DirectGdi::EDrawModePEN); |
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51 |
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52 TRect clipRect; |
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53 for (TInt count = 0; count < limit; count++) |
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54 { |
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55 clipRect = (*iDefaultRegionPtr)[count]; |
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56 if(!clipRect.Intersects(targetRect)) |
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57 { |
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58 continue; |
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59 } |
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60 |
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61 clipRect.Intersection(targetRect); |
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62 |
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63 TRect clippedSrceRect(clipRect); |
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64 clippedSrceRect.Move(offset); |
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65 |
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66 if (opaqueSource) |
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67 { |
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68 iDrawMode = DirectGdi::EDrawModeWriteAlpha; // write rather than blend. |
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69 } |
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70 |
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71 DoBitBlt(clipRect.iTl, srce, aBitmap.DataAddress(), aBitmap.DataStride(), clippedSrceRect); |
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72 |
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73 if (opaqueSource) |
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74 { |
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75 iDrawMode = DirectGdi::EDrawModePEN; // set it back to how it was. |
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76 } |
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77 |
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78 iDrawDevice->UpdateRegion(clipRect); |
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79 } |
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80 |
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81 aBitmap.EndDataAccess(ETrue); |
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82 } |
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83 |
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84 /** |
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85 @see MDirectGdiEngine::BitBltMasked(const TPoint&, const CFbsBitmap&, const TRect&, const CFbsBitmap&, TBool) |
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86 @panic DGDIAdapter 7, if either aMaskBitmap or aBitmap are invalid (debug only). |
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87 */ |
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88 void CSwDirectGdiEngine::BitBltMasked(const TPoint& aDestPos, |
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89 const CFbsBitmap& aBitmap, |
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90 const TRect& aSrcRect, |
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91 const CFbsBitmap& aMaskBitmap, |
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92 TBool aInvertMask) |
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93 { |
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94 if ((aBitmap.ExtendedBitmapType() != KNullUid) || (aMaskBitmap.ExtendedBitmapType() != KNullUid)) |
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95 { |
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96 iDriver->SetError(KErrNotSupported); // Not supported for extended bitmaps |
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97 return; |
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98 } |
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99 |
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100 TRect localSrcRect(aSrcRect); |
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101 const TPoint destPoint(aDestPos + iOrigin + localSrcRect.iTl - aSrcRect.iTl); |
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102 const TRect destRect(destPoint, localSrcRect.Size()); |
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103 const TPoint offset(localSrcRect.iTl - destPoint); |
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104 |
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105 TRect targetRect(destRect); |
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106 aBitmap.BeginDataAccess(); |
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107 aMaskBitmap.BeginDataAccess(); |
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108 |
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109 CBitwiseBitmap* srcebmp = static_cast<const CSwDirectGdiBitmap&>(aBitmap).Address(); |
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110 CBitwiseBitmap* maskbmp = static_cast<const CSwDirectGdiBitmap&>(aMaskBitmap).Address(); |
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111 |
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112 GRAPHICS_ASSERT_DEBUG(srcebmp,EDirectGdiPanicInvalidBitmap); |
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113 GRAPHICS_ASSERT_DEBUG(maskbmp,EDirectGdiPanicInvalidBitmap); |
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114 |
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115 const TDisplayMode maskMode = maskbmp->DisplayMode(); |
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116 const TInt limit = iDefaultRegionPtr->Count(); |
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117 TBool opaqueSource = (!IsAlphaChannel(aBitmap.DisplayMode())) && (iDrawMode == DirectGdi::EDrawModePEN); |
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118 TRect clipRect; |
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119 for (TInt count = 0; count < limit; count++) |
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120 { |
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121 clipRect = (*iDefaultRegionPtr)[count]; |
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122 if (!clipRect.Intersects(targetRect)) |
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123 { |
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124 continue; |
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125 } |
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126 |
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127 clipRect.Intersection(targetRect); |
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128 TRect clippedSrceRect(clipRect); |
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129 clippedSrceRect.Move(offset); |
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130 |
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131 if (opaqueSource) |
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132 { |
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133 iDrawMode = DirectGdi::EDrawModeWriteAlpha; // ie write rather than blend |
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134 } |
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135 |
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136 DoBitBltMasked(clipRect.iTl, srcebmp, aBitmap.DataAddress(), clippedSrceRect, maskbmp, |
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137 aMaskBitmap.DataAddress(), aInvertMask); |
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138 |
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139 if (opaqueSource) |
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140 { |
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141 iDrawMode = DirectGdi::EDrawModePEN; // set to default |
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142 } |
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143 iDrawDevice->UpdateRegion(clipRect); |
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144 } |
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145 |
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146 aBitmap.EndDataAccess(ETrue); |
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147 aMaskBitmap.EndDataAccess(ETrue); |
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148 } |
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149 |
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150 |
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151 /** |
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152 @see MDirectGdiEngine::BitBltMasked(const TPoint&, const CFbsBitmap&, const TRect&, const CFbsBitmap&, const TPoint&) |
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153 @panic DGDIAdapter 7, if either aBitmap or aMaskBitmap are invalid. |
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154 @panic DGDIAdapter 1022, if the top-left corner of aSrcRect is out of bounds (debug only). |
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155 */ |
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156 void CSwDirectGdiEngine::BitBltMasked(const TPoint& aDestPt, |
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157 const CFbsBitmap& aBitmap, const TRect& aSrcRect, |
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158 const CFbsBitmap& aMaskBitmap, const TPoint& aAlphaPt) |
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159 { |
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160 if ((aBitmap.ExtendedBitmapType() != KNullUid) || (aMaskBitmap.ExtendedBitmapType() != KNullUid)) |
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161 { |
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162 iDriver->SetError(KErrNotSupported); // Not supported for extended bitmaps |
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163 return; |
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164 } |
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165 |
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166 TRect srcRect(aSrcRect); |
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167 //Calculate the destination rect |
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168 TPoint destPt(aDestPt + iOrigin); |
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169 TRect destRect(destPt, srcRect.Size()); |
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170 TPoint offset(srcRect.iTl - destPt); |
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171 TRect targetRect(destRect); |
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172 |
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173 aBitmap.BeginDataAccess(); |
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174 aMaskBitmap.BeginDataAccess(); |
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175 CBitwiseBitmap* srcBmp = static_cast<const CSwDirectGdiBitmap&>(aBitmap).Address(); |
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176 CBitwiseBitmap* alphaBmp = static_cast<const CSwDirectGdiBitmap&>(aMaskBitmap).Address(); |
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177 GRAPHICS_ASSERT_DEBUG(srcBmp, EDirectGdiPanicInvalidBitmap); |
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178 GRAPHICS_ASSERT_DEBUG(alphaBmp, EDirectGdiPanicInvalidBitmap); |
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179 TUint32* srcDataAddr = aBitmap.DataAddress(); |
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180 TUint32* alphaDataAddr = aMaskBitmap.DataAddress(); |
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181 |
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182 //For each region - find the clipping rect and draw |
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183 TInt limit = iDefaultRegionPtr->Count (); |
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184 TRect clipRect; |
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185 for (TInt count=0; count<limit;count++) |
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186 { |
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187 clipRect=(*iDefaultRegionPtr)[count]; |
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188 if ( !clipRect.Intersects(targetRect)) |
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189 { |
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190 continue; |
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191 } |
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192 //targetRect was constructed from destRect. destRect was constructed from srcRect. |
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193 clipRect.Intersection (targetRect); |
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194 TRect clippedSrcRect(clipRect); |
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195 clippedSrcRect.Move(offset);//clippedSrcRect - maps to a part of srcRect now. |
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196 TPoint shift(clippedSrcRect.iTl - srcRect.iTl); |
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197 GRAPHICS_ASSERT_DEBUG(shift.iX >= 0, EDirectGdiPanicNegativeShift); |
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198 GRAPHICS_ASSERT_DEBUG(shift.iY >= 0, EDirectGdiPanicNegativeShift); |
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199 DoBitBltAlpha (clipRect.iTl, srcBmp, srcDataAddr, clippedSrcRect, |
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200 alphaBmp, alphaDataAddr, aAlphaPt + shift, EFalse); |
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201 iDrawDevice->UpdateRegion (clipRect); |
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202 } |
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203 |
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204 aBitmap.EndDataAccess(ETrue); |
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205 aMaskBitmap.EndDataAccess(ETrue); |
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206 return; |
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207 } |
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208 |
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209 /** |
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210 Calculates the position into the scanline for the given x coordinate. |
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211 |
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212 @param aX The given x-coordinate. |
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213 @param aDisplayMode The applied display mode. |
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214 @return The memory offset, or 0 if the mode is not supported. |
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215 @panic DGDIAdapter 1009, if aDisplayMode is not supported (debug only). |
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216 */ |
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217 TUint CSwDirectGdiEngine::MemoryOffsetForPixelPitch(TUint aX, TDisplayMode aDisplayMode) const |
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218 { |
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219 switch (aDisplayMode) |
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220 { |
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221 case EColor16MU: |
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222 case EColor16MAP: |
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223 return aX << 2; |
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224 case EColor64K: |
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225 return aX << 1; |
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226 default: |
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227 GRAPHICS_PANIC_DEBUG(EDirectGdiPanicInvalidDisplayMode); |
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228 } |
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229 return 0; |
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230 } |
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231 |
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232 TUint32* CSwDirectGdiEngine::GetScanLineOffsetPtr(CBitwiseBitmap* aSrce, TUint32*& aSlptr, |
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233 TInt aLength, TPoint aPixel, TUint32* aBase, |
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234 TLineScanningPosition& aLineScanningPosition, TUint aXOffset) |
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235 { |
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236 aSrce->GetScanLinePtr(aSlptr, aLength, aPixel, aBase, aLineScanningPosition); |
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237 return (TUint32*)((TUint8*)aSlptr + aXOffset); |
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238 } |
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239 |
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240 /** |
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241 Performs the actual bitblt to the device. |
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242 This function may also be called by DrawBitmap(), and DrawRect() when using a patterned brush, |
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243 so any changes to this function may impact on them also. |
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244 |
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245 @pre aSrce A bitmap with non-zero dimensions. aSrceRect has been clipped against the target. |
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246 |
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247 @param aDest The target position on the device which will contain the top left |
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248 corner of the source bitmap. |
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249 @param aSrce The bitmap object that contains the pixels to draw. |
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250 @param aBase The address of the bitmap pixels. |
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251 @param aStride The length in bytes between scanlines in memory. |
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252 @param aSrceRect The area of the bitmap to draw from. |
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253 @panic DGDIAdapter 1013, if aDest is fully outside of the bounds of the target, or aSrceRect.iTl is not |
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254 within the drawing area (debug only). |
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255 */ |
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256 void CSwDirectGdiEngine::DoBitBlt(const TPoint& aDest, |
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257 CBitwiseBitmap* aSrce, |
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258 TUint32* aBase, |
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259 TInt aStride, |
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260 const TRect& aSrceRect) |
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261 { |
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262 // Does multiple bitmap widths for painting rects only |
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263 const TInt width = aSrceRect.Width (); |
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264 |
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265 #ifdef _DEBUG |
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266 TRect deviceDestRect; |
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267 iDrawDevice->GetDrawRect(deviceDestRect); |
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268 GRAPHICS_ASSERT_DEBUG(aDest.iX >= deviceDestRect.iTl.iX, EDirectGdiPanicOutOfBounds); |
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269 GRAPHICS_ASSERT_DEBUG(aDest.iY >= deviceDestRect.iTl.iY, EDirectGdiPanicOutOfBounds); |
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270 GRAPHICS_ASSERT_DEBUG((aDest.iX + aSrceRect.Width()) <= deviceDestRect.iBr.iX, EDirectGdiPanicOutOfBounds); |
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271 GRAPHICS_ASSERT_DEBUG((aDest.iY + aSrceRect.Height()) <= deviceDestRect.iBr.iY, EDirectGdiPanicOutOfBounds); |
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272 GRAPHICS_ASSERT_DEBUG(aDest.iX >= 0 && aDest.iY >= 0, EDirectGdiPanicOutOfBounds); |
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273 GRAPHICS_ASSERT_DEBUG(aSrceRect.iTl.iX >= 0 && aSrceRect.iTl.iY >= 0, EDirectGdiPanicOutOfBounds); |
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274 #endif |
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275 |
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276 TSize srcSize = aSrce->SizeInPixels (); |
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277 |
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278 const TPoint KZeroPoint(0,0); |
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279 TAny* interface = NULL; |
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280 if (iDrawMode == DirectGdi::EDrawModeWriteAlpha && |
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281 aSrceRect.iBr.iX <= srcSize.iWidth && |
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282 aSrceRect.iBr.iY <= srcSize.iHeight && |
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283 !aSrce->IsCompressed() && |
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284 aSrce->DisplayMode() == iDrawDevice->DisplayMode() && |
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285 iDrawDevice->GetInterface(KFastBlit2InterfaceID, interface) == KErrNone) |
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286 { |
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287 // Conditions in CFbsBitGc allow for optimised blitting. |
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288 // The draw device supports the optimised blitting function. |
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289 // Operation may fail regardless due to unacceptable conditions in the draw device. |
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290 MFastBlit2* fastBlit = reinterpret_cast<MFastBlit2*>(interface); |
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291 if (fastBlit && (fastBlit->WriteBitmapBlock(aDest, aBase, aStride, srcSize, aSrceRect) == KErrNone)) |
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292 { |
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293 return; |
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294 } |
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295 } |
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296 |
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297 MFastBlend* fastBlend=NULL; |
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298 if (FastBlendInterface(aSrce,NULL,fastBlend)==KErrNone) |
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299 { |
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300 if (fastBlend->FastBlendBitmap(aDest, aBase, aStride, srcSize, aSrceRect, aSrce->DisplayMode(), GcDrawMode(iDrawMode), CFbsDrawDevice::ENoShadow)== KErrNone) |
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301 { |
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302 return; |
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303 } |
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304 } |
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305 |
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306 const TInt scanLineBytes = iDrawDevice->ScanLineBytes(); |
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307 TUint32* scanLineBuffer = iDrawDevice->ScanLineBuffer(); |
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308 TPtr8 scanLineDes((TUint8*)scanLineBuffer, scanLineBytes, scanLineBytes); |
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309 |
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310 const TDisplayMode dispMode = ScanLineBufferDisplayMode(iDrawDevice); |
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311 |
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312 const TBool useScanLinePtr = (dispMode == aSrce->DisplayMode()) && |
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313 (TDisplayModeUtils::NumDisplayModeBitsPerPixel(dispMode) >= 8); |
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314 |
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315 TUint32* slptr = NULL; |
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316 TUint offset = 0; |
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317 TUint32* lastScanLine = NULL; |
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318 if (useScanLinePtr) |
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319 { |
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320 lastScanLine = aSrce->ScanLineAddress(aBase, aSrceRect.iBr.iY-1); |
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321 } |
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322 |
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323 TInt srceWidth = srcSize.iWidth; |
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324 TInt partlinestart = aSrceRect.iTl.iX % srceWidth; |
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325 |
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326 if (partlinestart < 0) |
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327 { |
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328 partlinestart += srceWidth; |
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329 } |
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330 |
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331 const TInt partlinelength = Min(srceWidth - partlinestart, width); |
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332 TInt destX = aDest.iX; |
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333 const TInt destXlimit = destX+width; |
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334 const CGraphicsContext::TDrawMode drawMode = GcDrawMode(iDrawMode); |
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335 |
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336 // first part line |
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337 if (partlinestart > 0 && partlinelength > 0) |
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338 { |
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339 TPoint srcecoord1(partlinestart, aSrceRect.iTl.iY); |
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340 TInt desty = aDest.iY; |
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341 |
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342 TLineScanningPosition lineScanPos(aBase); |
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343 |
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344 if (useScanLinePtr) |
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345 { |
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346 offset = MemoryOffsetForPixelPitch(partlinestart, dispMode); |
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347 if (aSrce->IsCompressed ()) |
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348 { |
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349 |
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350 while (srcecoord1.iY < aSrceRect.iBr.iY) |
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351 { |
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352 scanLineBuffer = GetScanLineOffsetPtr (aSrce, slptr, |
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353 partlinelength, srcecoord1, aBase, lineScanPos, offset); |
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354 if (srcecoord1.iY == aSrceRect.iTl.iY) |
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355 { |
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356 aSrce->SetCompressionBookmark(lineScanPos, aBase, NULL); |
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357 } |
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358 iDrawDevice->WriteLine(aDest.iX, desty, partlinelength, |
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359 scanLineBuffer, drawMode); |
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360 srcecoord1.iY++; |
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361 desty++; |
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362 } |
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363 } |
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364 else |
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365 { |
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366 while (srcecoord1.iY < aSrceRect.iBr.iY) |
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367 { |
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368 scanLineBuffer = GetScanLineOffsetPtr (aSrce, slptr, |
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369 partlinelength, srcecoord1, aBase, lineScanPos, |
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370 offset); |
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371 do |
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372 { |
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373 iDrawDevice->WriteLine (aDest.iX, desty, |
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374 partlinelength, scanLineBuffer, drawMode); |
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375 scanLineBuffer = (TUint32*)((TUint8*)scanLineBuffer + aStride); |
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376 srcecoord1.iY++; |
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377 desty++; |
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378 } |
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379 while ((srcecoord1.iY < aSrceRect.iBr.iY) && (scanLineBuffer < lastScanLine)) ; |
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380 } |
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381 } |
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382 } |
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383 else |
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384 { |
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385 for ( ; srcecoord1.iY < aSrceRect.iBr.iY; srcecoord1.iY++, desty++) |
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386 { |
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387 aSrce->GetScanLine (scanLineDes, srcecoord1, partlinelength, |
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388 EFalse, KZeroPoint, dispMode, aBase, lineScanPos); |
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389 if ( srcecoord1.iY==aSrceRect.iTl.iY) |
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390 { |
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391 aSrce->SetCompressionBookmark (lineScanPos, aBase, NULL); |
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392 } |
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393 iDrawDevice->WriteLine (aDest.iX, desty, partlinelength, |
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394 scanLineBuffer, drawMode); |
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395 } |
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396 } |
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397 |
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398 destX += partlinelength; |
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399 } |
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400 |
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401 // multiple complete lines - columns |
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402 TInt numcolumns = (destXlimit - destX) / srceWidth; |
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403 |
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404 if (numcolumns > 0) |
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405 { |
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406 TPoint srcecoord2(0, aSrceRect.iTl.iY); |
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407 TInt desty = aDest.iY; |
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408 |
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409 TLineScanningPosition lineScanPos(aBase); |
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410 |
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411 if (useScanLinePtr) |
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412 { |
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413 if (aSrce->IsCompressed()) |
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414 { |
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415 while (srcecoord2.iY < aSrceRect.iBr.iY) |
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416 { |
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417 TPoint coord(srcecoord2); |
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418 aSrce->GetScanLinePtr (slptr, srceWidth, coord, aBase, lineScanPos); |
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419 if (srcecoord2.iY == aSrceRect.iTl.iY) |
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420 { |
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421 aSrce->SetCompressionBookmark(lineScanPos, aBase, NULL); |
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422 } |
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423 TInt tempdestX = destX; |
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424 for (TInt count = 0; count < numcolumns; count++, tempdestX += srceWidth) |
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425 { |
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426 iDrawDevice->WriteLine(tempdestX, desty, srceWidth, slptr, drawMode); |
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427 } |
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428 srcecoord2.iY++; |
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429 desty++; |
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430 } |
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431 } |
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432 else |
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433 { |
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434 while (srcecoord2.iY < aSrceRect.iBr.iY) |
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435 { |
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436 TPoint coord(srcecoord2); |
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437 aSrce->GetScanLinePtr (slptr, srceWidth, coord, aBase, lineScanPos); |
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438 do |
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439 { |
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440 TInt tempdestX = destX; |
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441 for (TInt count = 0; count < numcolumns; count++, tempdestX += srceWidth) |
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442 { |
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443 iDrawDevice->WriteLine (tempdestX, desty, srceWidth, slptr, drawMode); |
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444 } |
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445 slptr = (TUint32*)((TUint8*)slptr + aStride); |
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446 srcecoord2.iY++; |
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447 desty++; |
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448 } |
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449 while ((srcecoord2.iY < aSrceRect.iBr.iY) && (slptr < lastScanLine)); |
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450 } |
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451 } |
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452 } |
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453 else |
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454 { |
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455 for (; srcecoord2.iY < aSrceRect.iBr.iY; srcecoord2.iY++, desty++) |
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456 { |
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457 TInt tempdestX = destX; |
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458 TPoint coord(srcecoord2); |
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459 aSrce->GetScanLinePtr (slptr, srceWidth, coord, aBase, lineScanPos); |
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460 if (srcecoord2.iY == aSrceRect.iTl.iY) |
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461 { |
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462 aSrce->SetCompressionBookmark (lineScanPos, aBase, NULL); |
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463 } |
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464 for (TInt count = 0; count < numcolumns; count++, tempdestX += srceWidth) |
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465 { |
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466 aSrce->GetScanLine(slptr, scanLineDes, coord, srceWidth, |
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467 EFalse, KZeroPoint, dispMode); |
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468 iDrawDevice->WriteLine(tempdestX, desty, srceWidth, scanLineBuffer, drawMode); |
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469 } |
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470 } |
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471 } |
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472 |
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473 destX += numcolumns * srceWidth; |
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474 } |
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475 |
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476 // final part line |
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477 if (destX < destXlimit) |
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478 { |
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479 const TInt restofline = destXlimit - destX; |
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480 TPoint srcecoord3(0, aSrceRect.iTl.iY); |
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481 TInt desty = aDest.iY; |
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482 |
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483 TLineScanningPosition lineScanPos(aBase); |
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484 |
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485 if (useScanLinePtr) |
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486 { |
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487 offset = 0; |
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488 if (aSrce->IsCompressed()) |
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489 { |
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490 while (srcecoord3.iY < aSrceRect.iBr.iY) |
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491 { |
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492 scanLineBuffer = GetScanLineOffsetPtr (aSrce, slptr, |
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493 srceWidth, srcecoord3, aBase, lineScanPos, offset); |
|
494 if (srcecoord3.iY == aSrceRect.iTl.iY) |
|
495 { |
|
496 aSrce->SetCompressionBookmark (lineScanPos, aBase, NULL); |
|
497 } |
|
498 iDrawDevice->WriteLine(destX, desty, restofline, scanLineBuffer, drawMode); |
|
499 srcecoord3.iY++; |
|
500 desty++; |
|
501 } |
|
502 } |
|
503 else |
|
504 { |
|
505 while (srcecoord3.iY < aSrceRect.iBr.iY) |
|
506 { |
|
507 scanLineBuffer = GetScanLineOffsetPtr (aSrce, slptr, |
|
508 srceWidth, srcecoord3, aBase, lineScanPos, offset); |
|
509 do |
|
510 { |
|
511 iDrawDevice->WriteLine(destX, desty, restofline, scanLineBuffer, drawMode); |
|
512 scanLineBuffer = (TUint32*)((TUint8*)scanLineBuffer + aStride); |
|
513 srcecoord3.iY++; |
|
514 desty++; |
|
515 } |
|
516 while ((srcecoord3.iY < aSrceRect.iBr.iY) && (scanLineBuffer < lastScanLine)); |
|
517 } |
|
518 } |
|
519 } |
|
520 else |
|
521 { |
|
522 for (; srcecoord3.iY < aSrceRect.iBr.iY; srcecoord3.iY++, desty++) |
|
523 { |
|
524 aSrce->GetScanLine (scanLineDes, srcecoord3, srceWidth, EFalse, |
|
525 KZeroPoint, dispMode, aBase, lineScanPos); |
|
526 if (srcecoord3.iY == aSrceRect.iTl.iY) |
|
527 { |
|
528 aSrce->SetCompressionBookmark (lineScanPos, aBase, NULL); |
|
529 } |
|
530 iDrawDevice->WriteLine(destX, desty, restofline, scanLineBuffer, drawMode); |
|
531 } |
|
532 } |
|
533 } |
|
534 } |
|
535 /** |
|
536 Performs the masked bitblt to the device. |
|
537 |
|
538 @param aDest The target position on the device which will contain the top left |
|
539 corner of the source bitmap. |
|
540 @param aSourceBitmap The bitmap object that contains the pixels to draw. |
|
541 @param aSourceBase The address of the source bitmap pixels. |
|
542 @param aSourceRect The area of the bitmap to draw from. |
|
543 @param aMaskBitmap The bitmap object that contains the mask. |
|
544 @param aMaskBase The address of the mask pixels. |
|
545 @param aInvertMask Inverts the mask if ETrue. |
|
546 @panic DGDIAdapter 1013, if aDest is outside of the device bounds (debug only). |
|
547 */ |
|
548 void CSwDirectGdiEngine::DoBitBltMasked(const TPoint& aDest, |
|
549 CBitwiseBitmap* aSourceBitmap, |
|
550 TUint32* aSourceBase, |
|
551 const TRect& aSourceRect, |
|
552 CBitwiseBitmap* aMaskBitmap, |
|
553 TUint32* aMaskBase, |
|
554 TBool aInvertMask) |
|
555 { |
|
556 #ifdef _DEBUG |
|
557 TRect deviceDestRect; |
|
558 iDrawDevice->GetDrawRect (deviceDestRect); |
|
559 #endif |
|
560 |
|
561 GRAPHICS_ASSERT_DEBUG (aDest.iX >= deviceDestRect.iTl.iX, EDirectGdiPanicOutOfBounds); |
|
562 GRAPHICS_ASSERT_DEBUG (aDest.iY >= deviceDestRect.iTl.iY, EDirectGdiPanicOutOfBounds); |
|
563 GRAPHICS_ASSERT_DEBUG ((aDest.iX + aSourceRect.Width()) <= deviceDestRect.iBr.iX, EDirectGdiPanicOutOfBounds); |
|
564 GRAPHICS_ASSERT_DEBUG ((aDest.iY + aSourceRect.Height()) <= deviceDestRect.iBr.iY, EDirectGdiPanicOutOfBounds); |
|
565 const TPoint KZeroPoint(0,0); |
|
566 |
|
567 MFastBlend* fastBlend=NULL; |
|
568 if (FastBlendInterface(aSourceBitmap,aMaskBitmap,fastBlend)==KErrNone) |
|
569 { |
|
570 if (fastBlend->FastBlendBitmapMasked(aDest, aSourceBase, aSourceBitmap->DataStride(), aSourceBitmap->SizeInPixels(), aSourceRect, aSourceBitmap->DisplayMode(), |
|
571 aMaskBase, aMaskBitmap->DataStride(), aMaskBitmap->DisplayMode(), aMaskBitmap->SizeInPixels(), aSourceRect.iTl, aInvertMask, |
|
572 GcDrawMode(iDrawMode), CFbsDrawDevice::ENoShadow)==KErrNone) |
|
573 { |
|
574 return; |
|
575 } |
|
576 } |
|
577 |
|
578 if (aMaskBitmap->DisplayMode() == EGray256) |
|
579 { |
|
580 DoBitBltAlpha (aDest, aSourceBitmap, aSourceBase, aSourceRect, |
|
581 aMaskBitmap, aMaskBase, aSourceRect.iTl, EFalse); |
|
582 } |
|
583 // if screen driver is 16MAP we avoid logical operator pen modes by using DoBitBltAlpha() for blitting |
|
584 else if(iDrawDevice->ScanLineDisplayMode() == EColor16MAP) |
|
585 { |
|
586 DoBitBltAlpha (aDest, aSourceBitmap, aSourceBase, aSourceRect, |
|
587 aMaskBitmap, aMaskBase, aSourceRect.iTl, aInvertMask); |
|
588 } |
|
589 else if (aSourceBitmap == aMaskBitmap) |
|
590 { |
|
591 const TInt width = aSourceRect.Width(); |
|
592 const TDisplayMode dispMode = ScanLineBufferDisplayMode(iDrawDevice); |
|
593 const CGraphicsContext::TDrawMode drawMode = aInvertMask ? CGraphicsContext::EDrawModeAND : CGraphicsContext::EDrawModeOR; |
|
594 TPoint srcePoint(aSourceRect.iTl); |
|
595 TInt destY = aDest.iY; |
|
596 |
|
597 TLineScanningPosition lineScanPos(aSourceBase); |
|
598 |
|
599 const TBool useScanLinePtr = (dispMode == aSourceBitmap->DisplayMode() && |
|
600 (TDisplayModeUtils::NumDisplayModeBitsPerPixel(dispMode)>=8)); |
|
601 |
|
602 if (useScanLinePtr) |
|
603 { |
|
604 TUint32* scanLineBuffer = NULL; |
|
605 TUint32* slptr = NULL; |
|
606 TUint offset = MemoryOffsetForPixelPitch (srcePoint.iX, dispMode); |
|
607 |
|
608 if (aSourceBitmap->IsCompressed()) |
|
609 { |
|
610 for ( ; srcePoint.iY < aSourceRect.iBr.iY; destY++, |
|
611 srcePoint.iY++) |
|
612 { |
|
613 scanLineBuffer = GetScanLineOffsetPtr ( |
|
614 aSourceBitmap, slptr, width, srcePoint, |
|
615 aSourceBase, lineScanPos, offset); |
|
616 |
|
617 iDrawDevice->WriteLine (aDest.iX, destY, width, |
|
618 scanLineBuffer, drawMode); |
|
619 } |
|
620 } |
|
621 else |
|
622 { |
|
623 TUint stride = aSourceBitmap->DataStride (); |
|
624 TUint32* lastScanLine = aSourceBitmap->ScanLineAddress(aSourceBase, aSourceRect.iBr.iY-1); |
|
625 |
|
626 while (srcePoint.iY < aSourceRect.iBr.iY) |
|
627 { |
|
628 scanLineBuffer = GetScanLineOffsetPtr(aSourceBitmap, slptr, width, srcePoint, |
|
629 aSourceBase, lineScanPos, offset); |
|
630 do |
|
631 { |
|
632 iDrawDevice->WriteLine (aDest.iX, destY, width, scanLineBuffer, drawMode); |
|
633 scanLineBuffer = (TUint32*)((TUint8*)scanLineBuffer + stride); |
|
634 destY++; |
|
635 srcePoint.iY++; |
|
636 } |
|
637 while ((srcePoint.iY < aSourceRect.iBr.iY) && (scanLineBuffer < lastScanLine)); |
|
638 } |
|
639 } |
|
640 } |
|
641 else |
|
642 { |
|
643 const TInt scanLineBytes = iDrawDevice->ScanLineBytes(); |
|
644 TUint32* scanLineBuffer = iDrawDevice->ScanLineBuffer(); |
|
645 TPtr8 scanLineDes((TUint8*)scanLineBuffer, scanLineBytes, |
|
646 scanLineBytes); |
|
647 for (; srcePoint.iY < aSourceRect.iBr.iY; destY++, |
|
648 srcePoint.iY++) |
|
649 { |
|
650 aSourceBitmap->GetScanLine (scanLineDes, srcePoint, |
|
651 width, EFalse, KZeroPoint, dispMode, |
|
652 aSourceBase, lineScanPos); |
|
653 |
|
654 iDrawDevice->WriteLine (aDest.iX, destY, width, |
|
655 scanLineBuffer, drawMode); |
|
656 } |
|
657 } |
|
658 } |
|
659 else |
|
660 { |
|
661 DoBitBltMaskedFlicker(aDest, aSourceBitmap, aSourceBase, |
|
662 aSourceRect, aMaskBitmap, aMaskBase, aInvertMask); |
|
663 } |
|
664 } |
|
665 |
|
666 /** |
|
667 @see DoBitBltMasked() |
|
668 */ |
|
669 void CSwDirectGdiEngine::DoBitBltMaskedFlicker(const TPoint& aDest, |
|
670 CBitwiseBitmap* aSourceBitmap, |
|
671 TUint32* aSourceBase, |
|
672 const TRect& aSourceRect, |
|
673 CBitwiseBitmap* aMaskBitmap, |
|
674 TUint32* aMaskBase, |
|
675 TBool aInvertMask) |
|
676 { |
|
677 const TInt width = aSourceRect.Width(); |
|
678 TInt destY = aDest.iY; |
|
679 TPoint srcePoint(aSourceRect.iTl); |
|
680 |
|
681 TLineScanningPosition lineScanPos(aSourceBase); |
|
682 TLineScanningPosition lineScanPosMask(aMaskBase); |
|
683 |
|
684 const TDisplayMode srcFormat = aSourceBitmap->DisplayMode(); |
|
685 const TDisplayMode maskFormat = aMaskBitmap->DisplayMode(); |
|
686 |
|
687 if (aMaskBitmap->IsCompressed()) |
|
688 { |
|
689 HBufC8* hBuf = CFbsBitmap::GetDecompressionBuffer(aMaskBitmap->DataStride() + 4); |
|
690 if (!hBuf) |
|
691 { |
|
692 iDriver->SetError(KErrNoMemory); |
|
693 return; // Out of memory so do not draw anything |
|
694 } |
|
695 lineScanPosMask.iScanLineBuffer = hBuf; |
|
696 } |
|
697 |
|
698 TAny* interface = NULL; |
|
699 if ( (srcFormat == EColor16MU || srcFormat == EColor64K ) && |
|
700 maskFormat == EGray2 && |
|
701 aSourceBitmap->SizeInPixels().iWidth <= aMaskBitmap->SizeInPixels().iWidth && |
|
702 aSourceBitmap->SizeInPixels().iHeight <= aMaskBitmap->SizeInPixels().iHeight && |
|
703 iDrawDevice->GetInterface(KFastBlitInterfaceID, interface) == KErrNone ) |
|
704 { |
|
705 // Parameters allow optimised code path |
|
706 TInt length = width; |
|
707 TUint32* srcPtr=NULL; |
|
708 TUint32* maskPtr=NULL; |
|
709 MFastBlit* fastBlit = reinterpret_cast<MFastBlit*>(interface); |
|
710 while (srcePoint.iY < aSourceRect.iBr.iY) |
|
711 { |
|
712 aSourceBitmap->GetScanLinePtr(srcPtr, length, srcePoint, aSourceBase, lineScanPos); |
|
713 aMaskBitmap->GetScanLinePtr(maskPtr, length, srcePoint, aMaskBase, lineScanPosMask); |
|
714 |
|
715 fastBlit->WriteMaskLineEx(aDest.iX,destY,length,srcePoint.iX,srcPtr,srcFormat,srcePoint.iX,maskPtr,aInvertMask); |
|
716 |
|
717 destY++; |
|
718 ++srcePoint.iY; |
|
719 } |
|
720 return; |
|
721 } |
|
722 |
|
723 const TDisplayMode dispMode = ScanLineBufferDisplayMode(iDrawDevice); |
|
724 const CGraphicsContext::TDrawMode drawMode = aInvertMask ? CGraphicsContext::EDrawModeAND : CGraphicsContext::EDrawModeANDNOT; |
|
725 |
|
726 TUint32* scanLineBuffer = iDrawDevice->ScanLineBuffer(); |
|
727 const TInt scanLineBytes = iDrawDevice->ScanLineBytes(); |
|
728 TPtr8 scanLineDes((TUint8*)scanLineBuffer,scanLineBytes,scanLineBytes); |
|
729 TLineScanningPosition lineScanPos2(aSourceBase); |
|
730 const TPoint KZeroPoint(0,0); |
|
731 |
|
732 //scanline modifications required if using different modes, bits per pixel less than 8 |
|
733 if ( (dispMode == aSourceBitmap->DisplayMode()) && |
|
734 (TDisplayModeUtils::NumDisplayModeBitsPerPixel(dispMode)>=8)) |
|
735 { |
|
736 TUint offset = MemoryOffsetForPixelPitch(srcePoint.iX, dispMode); |
|
737 TUint32* slptr=NULL; |
|
738 //mask scanline modifications required for EInvertPen, different screen modes |
|
739 if ((drawMode != CGraphicsContext::EDrawModeANDNOT) && (dispMode == aMaskBitmap->DisplayMode())) |
|
740 { |
|
741 TUint32* scanLineBufferMask = NULL; |
|
742 //stride jumping not possible with compressed bitmaps |
|
743 if (aSourceBitmap->IsCompressed() || aMaskBitmap->IsCompressed()) |
|
744 { |
|
745 for (; srcePoint.iY < aSourceRect.iBr.iY; destY++,srcePoint.iY++) |
|
746 { |
|
747 scanLineBuffer = GetScanLineOffsetPtr(aSourceBitmap, slptr, width, srcePoint, aSourceBase, lineScanPos, offset); |
|
748 iDrawDevice->WriteLine(aDest.iX,destY,width,scanLineBuffer, CGraphicsContext::EDrawModeXOR); |
|
749 scanLineBufferMask = GetScanLineOffsetPtr(aMaskBitmap, slptr, width, srcePoint, aMaskBase, lineScanPosMask, offset); |
|
750 iDrawDevice->WriteLine(aDest.iX,destY,width,scanLineBufferMask,drawMode); |
|
751 iDrawDevice->WriteLine(aDest.iX,destY,width,scanLineBuffer, CGraphicsContext::EDrawModeXOR); |
|
752 } |
|
753 } |
|
754 else |
|
755 { |
|
756 TUint strideSrc = aSourceBitmap->DataStride(); |
|
757 TUint strideMask = aMaskBitmap->DataStride(); |
|
758 TUint32* lastScanLineSrc = aSourceBitmap->ScanLineAddress(aSourceBase,aSourceRect.iBr.iY-1); |
|
759 TUint32* lastScanLineMask = aMaskBitmap->ScanLineAddress(aMaskBase,aSourceRect.iBr.iY-1); |
|
760 |
|
761 while (srcePoint.iY < aSourceRect.iBr.iY) |
|
762 { |
|
763 scanLineBuffer = GetScanLineOffsetPtr(aSourceBitmap, slptr, width, srcePoint, aSourceBase, lineScanPos, offset); |
|
764 scanLineBufferMask = GetScanLineOffsetPtr(aMaskBitmap, slptr, width, srcePoint, aMaskBase, lineScanPosMask, offset); |
|
765 do |
|
766 { |
|
767 iDrawDevice->WriteLine(aDest.iX,destY,width,scanLineBuffer,CGraphicsContext::EDrawModeXOR); |
|
768 iDrawDevice->WriteLine(aDest.iX,destY,width,scanLineBufferMask,drawMode); |
|
769 iDrawDevice->WriteLine(aDest.iX,destY,width,scanLineBuffer,CGraphicsContext::EDrawModeXOR); |
|
770 destY++; |
|
771 srcePoint.iY++; |
|
772 } |
|
773 while ((srcePoint.iY < aSourceRect.iBr.iY) && |
|
774 (scanLineBuffer < lastScanLineSrc) && |
|
775 (scanLineBufferMask < lastScanLineMask) && |
|
776 ((scanLineBuffer = (TUint32*)((TUint8*)scanLineBuffer + strideSrc))>(TUint32*)0) && |
|
777 ((scanLineBufferMask = (TUint32*)((TUint8*)scanLineBufferMask + strideMask))>(TUint32*)0) ); |
|
778 } |
|
779 } |
|
780 } |
|
781 else |
|
782 { |
|
783 TUint32* scanLineBufferPtr = NULL; |
|
784 //stride jumping not possible with compressed bitmaps |
|
785 if (aSourceBitmap->IsCompressed()) |
|
786 { |
|
787 for (; srcePoint.iY < aSourceRect.iBr.iY; destY++,srcePoint.iY++) |
|
788 { |
|
789 scanLineBufferPtr = GetScanLineOffsetPtr(aSourceBitmap, slptr, width, srcePoint, aSourceBase, lineScanPos, offset); |
|
790 iDrawDevice->WriteLine(aDest.iX,destY,width,scanLineBufferPtr,CGraphicsContext::EDrawModeXOR); |
|
791 aMaskBitmap->GetScanLine(scanLineDes,srcePoint,width,EFalse , KZeroPoint, dispMode, aMaskBase, lineScanPosMask); |
|
792 TileScanLine(scanLineDes, width, srcePoint, aMaskBitmap, lineScanPosMask, aMaskBase, dispMode); |
|
793 iDrawDevice->WriteLine(aDest.iX,destY,width,scanLineBuffer,drawMode); |
|
794 iDrawDevice->WriteLine(aDest.iX,destY,width,scanLineBufferPtr,CGraphicsContext::EDrawModeXOR); |
|
795 } |
|
796 } |
|
797 else |
|
798 { |
|
799 TUint stride = aSourceBitmap->DataStride(); |
|
800 TUint32* lastScanLine = aSourceBitmap->ScanLineAddress(aSourceBase,aSourceRect.iBr.iY-1); |
|
801 while (srcePoint.iY < aSourceRect.iBr.iY) |
|
802 { |
|
803 scanLineBufferPtr = GetScanLineOffsetPtr(aSourceBitmap, slptr, width, srcePoint, aSourceBase, lineScanPos, offset); |
|
804 do |
|
805 { |
|
806 iDrawDevice->WriteLine(aDest.iX,destY,width,scanLineBufferPtr,CGraphicsContext::EDrawModeXOR); |
|
807 aMaskBitmap->GetScanLine(scanLineDes,srcePoint,width,EFalse, KZeroPoint, dispMode,aMaskBase, lineScanPosMask); |
|
808 TileScanLine(scanLineDes, width, srcePoint, aMaskBitmap, lineScanPosMask, aMaskBase, dispMode); |
|
809 iDrawDevice->WriteLine(aDest.iX,destY,width,scanLineBuffer,drawMode); |
|
810 iDrawDevice->WriteLine(aDest.iX,destY,width,scanLineBufferPtr,CGraphicsContext::EDrawModeXOR); |
|
811 destY++; |
|
812 srcePoint.iY++; |
|
813 } |
|
814 while ((srcePoint.iY < aSourceRect.iBr.iY) && (scanLineBufferPtr < lastScanLine) && |
|
815 ((scanLineBufferPtr = (TUint32*)((TUint8*)scanLineBufferPtr + stride))>(TUint32*)0)); |
|
816 } |
|
817 } |
|
818 } |
|
819 } |
|
820 else |
|
821 { |
|
822 for (; srcePoint.iY < aSourceRect.iBr.iY; destY++,srcePoint.iY++) |
|
823 { |
|
824 aSourceBitmap->GetScanLine(scanLineDes,srcePoint,width,EFalse, KZeroPoint, |
|
825 dispMode,aSourceBase,lineScanPos); |
|
826 |
|
827 iDrawDevice->WriteLine(aDest.iX,destY,width,scanLineBuffer,CGraphicsContext::EDrawModeXOR); |
|
828 aMaskBitmap->GetScanLine(scanLineDes,srcePoint,width,EFalse , KZeroPoint, dispMode, |
|
829 aMaskBase, lineScanPosMask); |
|
830 TileScanLine(scanLineDes, width, srcePoint, aMaskBitmap, lineScanPosMask, aMaskBase, dispMode); |
|
831 iDrawDevice->WriteLine(aDest.iX,destY,width,scanLineBuffer,drawMode); |
|
832 aSourceBitmap->GetScanLine(scanLineDes,srcePoint,width,EFalse , KZeroPoint ,dispMode, |
|
833 aSourceBase,lineScanPos2); |
|
834 |
|
835 iDrawDevice->WriteLine(aDest.iX,destY,width,scanLineBuffer,CGraphicsContext::EDrawModeXOR); |
|
836 } |
|
837 } |
|
838 } |
|
839 |
|
840 /** |
|
841 @see DoBitBltMasked() |
|
842 */ |
|
843 void CSwDirectGdiEngine::DoBitBltAlpha(const TPoint& aDest ,CBitwiseBitmap* aSourceBitmap, |
|
844 TUint32* aSourceBase, const TRect& aSourceRect, |
|
845 CBitwiseBitmap* aMaskBitmap, TUint32* aMaskBase, |
|
846 const TPoint& aAlphaPoint, TBool aInvertMask) |
|
847 { |
|
848 MFastBlend* fastBlend=NULL; |
|
849 if (FastBlendInterface(aSourceBitmap,aMaskBitmap,fastBlend)==KErrNone) |
|
850 { |
|
851 if (fastBlend->FastBlendBitmapMasked(aDest, aSourceBase, aSourceBitmap->DataStride(), aSourceBitmap->SizeInPixels(), aSourceRect, aSourceBitmap->DisplayMode(), |
|
852 aMaskBase, aMaskBitmap->DataStride(), aMaskBitmap->DisplayMode(), aMaskBitmap->SizeInPixels(), aAlphaPoint, aInvertMask, |
|
853 GcDrawMode(iDrawMode), CFbsDrawDevice::ENoShadow)==KErrNone) |
|
854 { |
|
855 return; |
|
856 } |
|
857 } |
|
858 |
|
859 const TPoint KZeroPoint(0,0); |
|
860 const TInt KScanLineLength = 256; |
|
861 const TInt KRgbSize = 4; |
|
862 |
|
863 TUint8 srceRgbBuffer[KScanLineLength * KRgbSize]; |
|
864 TUint8 maskBuffer[KScanLineLength]; |
|
865 TUint8* srceRgbBufferPtr(srceRgbBuffer); |
|
866 |
|
867 TPtr8 srceRgbDes(srceRgbBuffer, KScanLineLength * KRgbSize, KScanLineLength * KRgbSize); |
|
868 TPtr8 maskDes(maskBuffer, KScanLineLength, KScanLineLength); |
|
869 |
|
870 TInt srceY = aSourceRect.iTl.iY; |
|
871 TInt destY = aDest.iY; |
|
872 TInt alphaY = aAlphaPoint.iY; |
|
873 |
|
874 TLineScanningPosition lineScanPosSrc(aSourceBase); |
|
875 TLineScanningPosition lineScanPosMask(aMaskBase); |
|
876 TDisplayMode sourceMode = aSourceBitmap->DisplayMode(); |
|
877 |
|
878 if (aMaskBitmap->IsCompressed()) |
|
879 { |
|
880 HBufC8* hBuf= CFbsBitmap::GetDecompressionBuffer(aMaskBitmap->DataStride()); |
|
881 if (hBuf == NULL) |
|
882 { |
|
883 iDriver->SetError(KErrNoMemory); // Out of memory so do not draw anything |
|
884 return; |
|
885 } |
|
886 lineScanPosMask.iScanLineBuffer = hBuf; |
|
887 } |
|
888 |
|
889 TAny* interface = NULL; |
|
890 if ( (sourceMode == EColor16MU || sourceMode == EColor64K) && |
|
891 aMaskBitmap->DisplayMode() == EGray256 && // ensure a monochrome mask isn't passed in as an alpha channel |
|
892 aSourceBitmap->SizeInPixels().iWidth <= aMaskBitmap->SizeInPixels().iWidth && |
|
893 aSourceBitmap->SizeInPixels().iHeight <= aMaskBitmap->SizeInPixels().iHeight && |
|
894 iDrawDevice->GetInterface(KFastBlitInterfaceID, interface) == KErrNone ) |
|
895 { |
|
896 TInt length = aSourceRect.Width(); |
|
897 const TInt srceX = aSourceRect.iTl.iX; |
|
898 const TInt alphaX = aAlphaPoint.iX; |
|
899 const TInt destX = aDest.iX; |
|
900 MFastBlit* fastBlit = reinterpret_cast<MFastBlit*>(interface); |
|
901 |
|
902 while (srceY < aSourceRect.iBr.iY) |
|
903 { |
|
904 TUint32* srcPtr; |
|
905 TUint32* maskPtr; |
|
906 TPoint srcPoint(srceX, srceY); |
|
907 TPoint maskPoint(alphaX, alphaY); |
|
908 |
|
909 aSourceBitmap->GetScanLinePtr(srcPtr, length, srcPoint, aSourceBase, lineScanPosSrc); |
|
910 aMaskBitmap->GetScanLinePtr(maskPtr, length, maskPoint, aMaskBase, lineScanPosMask); |
|
911 |
|
912 fastBlit->WriteAlphaLineEx(destX, destY, length, srceX, srcPtr, |
|
913 sourceMode, alphaX, maskPtr, MAlphaBlend::EShdwBefore); |
|
914 srceY++; |
|
915 destY++; |
|
916 alphaY++; |
|
917 } |
|
918 |
|
919 return; |
|
920 } |
|
921 |
|
922 const TBool useScanLinePtr = ( (EColor16MA == aSourceBitmap->DisplayMode())); |
|
923 TUint32* slptr = NULL; |
|
924 TUint offset = 0; |
|
925 |
|
926 while (srceY < aSourceRect.iBr.iY) |
|
927 { |
|
928 TInt srceX = aSourceRect.iTl.iX; |
|
929 TInt destX = aDest.iX; |
|
930 TInt alphaX = aAlphaPoint.iX; |
|
931 |
|
932 while (srceX < aSourceRect.iBr.iX) |
|
933 { |
|
934 TPoint srcePoint(srceX,srceY); |
|
935 TPoint alphaPoint(alphaX,alphaY); |
|
936 const TInt width = Min(KScanLineLength, aSourceRect.iBr.iX - srceX); |
|
937 |
|
938 if (useScanLinePtr) |
|
939 { |
|
940 offset = MemoryOffsetForPixelPitch(srceX, EColor16MU); |
|
941 srceRgbBufferPtr = (TUint8*)GetScanLineOffsetPtr(aSourceBitmap, slptr, width, |
|
942 srcePoint, aSourceBase, lineScanPosSrc, offset); |
|
943 } |
|
944 else |
|
945 { |
|
946 aSourceBitmap->GetScanLine(srceRgbDes,srcePoint,width,EFalse,KZeroPoint, |
|
947 ERgb,aSourceBase,lineScanPosSrc); |
|
948 } |
|
949 |
|
950 aMaskBitmap->GetScanLine(maskDes, alphaPoint, width, EFalse, KZeroPoint, |
|
951 EGray256, aMaskBase, lineScanPosMask); |
|
952 TileScanLine(maskDes, width, alphaPoint, aMaskBitmap, lineScanPosMask, aMaskBase, EGray256); |
|
953 |
|
954 // aInvertMask is not used for alpha channels (EGray256 mask) |
|
955 if (aInvertMask && aMaskBitmap->DisplayMode() != EGray256) |
|
956 { |
|
957 for (TInt i = 0; i < width; ++i) |
|
958 { |
|
959 maskBuffer[i] = ~maskBuffer[i]; |
|
960 } |
|
961 } |
|
962 |
|
963 iDrawDevice->WriteRgbAlphaLine(destX, destY, width, srceRgbBufferPtr, maskBuffer, GcDrawMode(iDrawMode)); |
|
964 |
|
965 srceX += KScanLineLength; |
|
966 destX += KScanLineLength; |
|
967 alphaX += KScanLineLength; |
|
968 } |
|
969 |
|
970 srceY++; |
|
971 destY++; |
|
972 alphaY++; |
|
973 } |
|
974 } |
|
975 |
|
976 /** |
|
977 Tiles the scan line if its length in pixels is less than aLengthInPixels. |
|
978 |
|
979 @param aScanLine A pointer to the scan line buffer. |
|
980 @param aLengthInPixels The scan line size in pixels. |
|
981 @param aSrcPt Position of the first pixel in aMaskBitmap that should be used as a source |
|
982 for the pixels in scan line buffer. |
|
983 @param aMaskBitmap Any additional pixels for the scan line buffer will be taken from here. |
|
984 @param aScanLinePos This argument is used for some internal optimisations. It should not be |
|
985 modified by the caller. |
|
986 @param aMaskBase The base address of aMaskBitmap data. |
|
987 @param aDisplayMode Any additional pixels should be taken from aMaskBitmap using aDisplayMode |
|
988 as an argument for GetScanLine() call. |
|
989 @panic DGDIAdapter 1021, if the memory required for the scanline is greater than the size of aScanLine (debug only). |
|
990 */ |
|
991 void CSwDirectGdiEngine::TileScanLine(TPtr8& aScanLine, |
|
992 TInt aLengthInPixels, |
|
993 const TPoint& aSrcPt, |
|
994 const CBitwiseBitmap* aMaskBitmap, |
|
995 TLineScanningPosition& aScanLinePos, |
|
996 TUint32* aMaskBase, |
|
997 TDisplayMode aDisplayMode |
|
998 ) |
|
999 { |
|
1000 TInt lengthInBytes = CFbsBitmap::ScanLineLength(aLengthInPixels, aDisplayMode); |
|
1001 GRAPHICS_ASSERT_DEBUG(lengthInBytes <= aScanLine.MaxLength(), EDirectGdiPanicInvalidArg); |
|
1002 TInt scanLineLength = aScanLine.Length(); |
|
1003 if(scanLineLength < lengthInBytes && aSrcPt.iX > 0) |
|
1004 { |
|
1005 //If, for example, src bmp is 100 pixels width, mask bmp is 20 pixels width and src |
|
1006 //rect is (10, 0, 100, 1) -> We will read only pixels 10..19 from the first scan line |
|
1007 //of the mask bmp. We have to have 90 mask bmp pixels. |
|
1008 //So we have to make a second mask bmp read startig from pixel 0 - 10 pixels length. |
|
1009 TInt maxLen = Min(aScanLine.MaxLength() - scanLineLength, aSrcPt.iX); |
|
1010 TPtr8 maskDes2(const_cast <TUint8*> (aScanLine.Ptr()) + scanLineLength, maxLen, maxLen); |
|
1011 TPoint srcPt(0, aSrcPt.iY); |
|
1012 TPoint zeroPt(0, 0); |
|
1013 aMaskBitmap->GetScanLine(maskDes2, srcPt, maxLen, EFalse, zeroPt, aDisplayMode, aMaskBase, aScanLinePos); |
|
1014 aScanLine.SetLength(scanLineLength + maskDes2.Length()); |
|
1015 scanLineLength = aScanLine.Length(); |
|
1016 } |
|
1017 if(scanLineLength >= lengthInBytes || scanLineLength == 0) |
|
1018 { |
|
1019 return; |
|
1020 } |
|
1021 //If we still don't have enough mask bmp pixels - we have to tile the scan line |
|
1022 TInt repeatCnt = lengthInBytes / scanLineLength - 1; |
|
1023 TInt bytesLeft = lengthInBytes % scanLineLength; |
|
1024 const TUint8* src = aScanLine.Ptr(); |
|
1025 TUint8* dest = const_cast <TUint8*> (src) + scanLineLength; |
|
1026 for(;repeatCnt>0;dest+=scanLineLength,repeatCnt--) |
|
1027 { |
|
1028 Mem::Copy(dest, src, scanLineLength); |
|
1029 } |
|
1030 if(bytesLeft) |
|
1031 { |
|
1032 Mem::Copy(dest, src, bytesLeft); |
|
1033 } |
|
1034 aScanLine.SetLength(lengthInBytes); |
|
1035 } |
|
1036 |
|
1037 /** |
|
1038 Draws a masked rectangular section of the source bitmap and does a compress/stretch to |
|
1039 fit a given destination rectangle. It uses DoBitBltMasked() if no stretching is involved. |
|
1040 |
|
1041 @see DrawBitmapMasked() |
|
1042 |
|
1043 @param aDestRect The target position on the device containing the top left corner of the source bitmap. |
|
1044 @param aSourceBitmap The bitmap object that contains the pixels to draw. |
|
1045 @param aSourceBase The address of the source bitmap pixels. |
|
1046 @param aSourceRect The area of the bitmap to draw from. |
|
1047 @param aMaskBitmap The bitmap object that contains the mask. |
|
1048 @param aMaskBase The address of the mask pixels. |
|
1049 @param aInvertMask Inverts the mask if ETrue. |
|
1050 @param aClipRect A clipping rectangle. |
|
1051 @panic DGDIAdapter 1013, if the clipping rectangle is fully outside of the device bounds (debug only). |
|
1052 */ |
|
1053 void CSwDirectGdiEngine::DoDrawBitmapMasked(const TRect& aDestRect, |
|
1054 CBitwiseBitmap* aSourceBitmap, |
|
1055 TUint32* aSourceBase, |
|
1056 const TRect& aSourceRect, |
|
1057 CBitwiseBitmap* aMaskBitmap, |
|
1058 TUint32* aMaskBase, |
|
1059 TBool aInvertMask, |
|
1060 const TRect& aClipRect) |
|
1061 { |
|
1062 CFbsDrawDevice* drawDevice = iDrawDevice; |
|
1063 #ifdef _DEBUG |
|
1064 TRect deviceDestRect; |
|
1065 drawDevice->GetDrawRect(deviceDestRect); |
|
1066 GRAPHICS_ASSERT_DEBUG(aClipRect.iTl.iX >= deviceDestRect.iTl.iX, EDirectGdiPanicOutOfBounds); |
|
1067 GRAPHICS_ASSERT_DEBUG(aClipRect.iTl.iY >= deviceDestRect.iTl.iY, EDirectGdiPanicOutOfBounds); |
|
1068 GRAPHICS_ASSERT_DEBUG(aClipRect.iBr.iX <= deviceDestRect.iBr.iX, EDirectGdiPanicOutOfBounds); |
|
1069 GRAPHICS_ASSERT_DEBUG(aClipRect.iBr.iY <= deviceDestRect.iBr.iY, EDirectGdiPanicOutOfBounds); |
|
1070 #endif |
|
1071 |
|
1072 // The clipped version of the destination rectangle |
|
1073 TRect clippedDestRect(aDestRect); |
|
1074 clippedDestRect.Intersection(aClipRect); |
|
1075 |
|
1076 // If the source rectangle and the destination rectangle are same, |
|
1077 // no stretch/compress operation required, just do BitBltMasked |
|
1078 if (aDestRect.Size() == aSourceRect.Size()) |
|
1079 { |
|
1080 if (!clippedDestRect.IsEmpty()) |
|
1081 { |
|
1082 const TPoint destPoint(clippedDestRect.iTl); |
|
1083 clippedDestRect.Move(aSourceRect.iTl - aDestRect.iTl); |
|
1084 DoBitBltMasked(destPoint, |
|
1085 aSourceBitmap, |
|
1086 aSourceBase, |
|
1087 clippedDestRect, |
|
1088 aMaskBitmap, |
|
1089 aMaskBase, |
|
1090 aInvertMask); |
|
1091 } |
|
1092 return; |
|
1093 } |
|
1094 |
|
1095 MFastBlend* fastBlend=NULL; |
|
1096 if (FastBlendInterface(aSourceBitmap,aMaskBitmap,fastBlend)==KErrNone) |
|
1097 { |
|
1098 if (fastBlend->FastBlendBitmapMaskedScaled(aClipRect, aDestRect, aSourceRect, aSourceBase, aSourceBitmap->DataStride(), |
|
1099 aSourceBitmap->DisplayMode(),aSourceBitmap->SizeInPixels(), |
|
1100 aMaskBase, aMaskBitmap->DataStride(), aMaskBitmap->DisplayMode(), aMaskBitmap->SizeInPixels(), aInvertMask, |
|
1101 GcDrawMode(iDrawMode), CFbsDrawDevice::ENoShadow)==KErrNone) |
|
1102 { |
|
1103 return; |
|
1104 } |
|
1105 } |
|
1106 |
|
1107 TUint32* scanLineBuffer = drawDevice->ScanLineBuffer(); |
|
1108 const TInt scanLineBytes = drawDevice->ScanLineBytes(); |
|
1109 TPtr8 scanLineDes(reinterpret_cast<TUint8*>(scanLineBuffer),scanLineBytes,scanLineBytes); |
|
1110 |
|
1111 const TInt KScanLineLength = 256; |
|
1112 const TInt KRgbSize = 4; |
|
1113 TUint8 maskBuffer[KScanLineLength]; |
|
1114 |
|
1115 TUint8 sourceBuffer[KScanLineLength*KRgbSize]; |
|
1116 TPtr8 sourceDes(sourceBuffer,KScanLineLength*KRgbSize,KScanLineLength*KRgbSize); |
|
1117 |
|
1118 const TDisplayMode dispMode = ScanLineBufferDisplayMode(drawDevice); |
|
1119 CGraphicsContext::TDrawMode drawMode = aInvertMask ? CGraphicsContext::EDrawModeAND : CGraphicsContext::EDrawModeANDNOT; |
|
1120 // If the source bitmap and the mask bitmap are same, draw the source bitmap either |
|
1121 // with EDrawModeAND or EDrawModeOR based on aInvertMask parameter. |
|
1122 if (aSourceBitmap == aMaskBitmap) |
|
1123 { |
|
1124 drawMode = aInvertMask ? CGraphicsContext::EDrawModeAND : CGraphicsContext::EDrawModeOR; |
|
1125 } |
|
1126 |
|
1127 TLinearDDA xLine; |
|
1128 TInt bitmapXStart = 0; |
|
1129 xLine.Construct(TPoint(aSourceRect.iTl.iX,aDestRect.iTl.iX), |
|
1130 TPoint(aSourceRect.iBr.iX,aDestRect.iBr.iX),TLinearDDA::ELeft); |
|
1131 xLine.JumpToYCoord2(bitmapXStart,clippedDestRect.iTl.iX); |
|
1132 |
|
1133 TLinearDDA yLine; |
|
1134 TPoint yCoord(aSourceRect.iTl.iY,aDestRect.iTl.iY); |
|
1135 yLine.Construct(yCoord,TPoint(aSourceRect.iBr.iY,aDestRect.iBr.iY),TLinearDDA::ELeft); |
|
1136 TInt dummy; |
|
1137 yLine.JumpToYCoord2(dummy,clippedDestRect.iTl.iY); |
|
1138 yCoord.SetXY(dummy,clippedDestRect.iTl.iY); |
|
1139 |
|
1140 const TInt srceWidth = aSourceRect.Width(); |
|
1141 const TInt destWidth = aDestRect.Width(); |
|
1142 const TInt clipWidth = clippedDestRect.Width(); |
|
1143 const TInt clipStrch = clippedDestRect.iTl.iX - aDestRect.iTl.iX; |
|
1144 const TInt sourceBmpWidth = aSourceBitmap->SizeInPixels().iWidth; |
|
1145 const TInt maskWidth = aMaskBitmap->SizeInPixels().iWidth; |
|
1146 const TInt maskHeight = aMaskBitmap->SizeInPixels().iHeight; |
|
1147 |
|
1148 TLineScanningPosition lineScanPos(aSourceBase); |
|
1149 TLineScanningPosition lineScanPos2(aSourceBase); |
|
1150 TLineScanningPosition lineScanPosMask(aMaskBase); |
|
1151 |
|
1152 HBufC8* alphaBuffer = NULL; |
|
1153 TPtr8 alphaBufferDes(NULL, 0); |
|
1154 const TDisplayMode maskDisplayMode = aMaskBitmap->DisplayMode(); |
|
1155 |
|
1156 // Mask inversion is not supported if the original source mask format is EGray256. |
|
1157 // Note that this is only used for pre-multiplied alpha targets. |
|
1158 TUint8 maskInverter = (aInvertMask && maskDisplayMode != EGray256) ? 0xFF : 0x00; |
|
1159 |
|
1160 if (aSourceBitmap != aMaskBitmap) |
|
1161 { |
|
1162 // Get buffer to be used to convert non-EGray256 masks to EGray256 when display mode is EColor16MAP |
|
1163 // or to tile the mask when the mask width is smaller than the source bitmap width. |
|
1164 if (maskDisplayMode != EGray256 && (dispMode == EColor16MAP || maskWidth < sourceBmpWidth)) |
|
1165 { |
|
1166 alphaBuffer = CFbsBitmap::GetExtraBuffer(CFbsBitmap::ScanLineLength(maskWidth, EGray256)); |
|
1167 if (!alphaBuffer) |
|
1168 { |
|
1169 return; // Out of memory so do not draw anything |
|
1170 } |
|
1171 alphaBufferDes.Set(alphaBuffer->Des()); |
|
1172 } |
|
1173 |
|
1174 // Get buffer to be used for decompressing compressed masks when mask is EGray256 |
|
1175 if (maskDisplayMode == EGray256 && aMaskBitmap->IsCompressed()) |
|
1176 { |
|
1177 HBufC8* hBuf= CFbsBitmap::GetDecompressionBuffer(aMaskBitmap->DataStride()); |
|
1178 if (!hBuf) |
|
1179 { |
|
1180 return; // Out of memory so do not draw anything |
|
1181 } |
|
1182 lineScanPosMask.iScanLineBuffer = hBuf; |
|
1183 } |
|
1184 } |
|
1185 const TPoint KZeroPoint(0,0); |
|
1186 |
|
1187 while (yCoord.iY < clippedDestRect.iBr.iY) |
|
1188 { |
|
1189 // Draw only the source bitmap, if the source bitmap and the mask bitmap are same. |
|
1190 // else draw both the bitmaps |
|
1191 if (aSourceBitmap == aMaskBitmap) |
|
1192 { |
|
1193 aSourceBitmap->StretchScanLine(scanLineDes,TPoint(bitmapXStart,yCoord.iX), |
|
1194 clipStrch,clipWidth,destWidth,aSourceRect.iTl.iX, |
|
1195 srceWidth, KZeroPoint,dispMode,aSourceBase,lineScanPos); |
|
1196 if (yCoord.iY==clippedDestRect.iTl.iY) |
|
1197 aSourceBitmap->SetCompressionBookmark(lineScanPos,aSourceBase,NULL); |
|
1198 drawDevice->WriteLine(clippedDestRect.iTl.iX,yCoord.iY,clipWidth,scanLineBuffer,drawMode); |
|
1199 } |
|
1200 else if ((maskDisplayMode == EGray256) || (dispMode == EColor16MAP)) |
|
1201 { |
|
1202 // Stretch the source bitmap and the mask bitmap for KScanLineLength as stretch length |
|
1203 // then do alpha blending for this length. If the length is more then KScanLineLength |
|
1204 // repeat it till you stretch complete destination length. |
|
1205 const TPoint startPt(bitmapXStart,yCoord.iX); |
|
1206 TInt clipWidthPart = clippedDestRect.Width(); |
|
1207 TBool loopLast = ETrue; |
|
1208 if(clipWidthPart > KScanLineLength) |
|
1209 { |
|
1210 clipWidthPart = KScanLineLength; |
|
1211 loopLast = EFalse; |
|
1212 } |
|
1213 TInt clipIncStrch = clippedDestRect.iTl.iX - aDestRect.iTl.iX; |
|
1214 TInt startClip=clippedDestRect.iTl.iX; |
|
1215 TPoint sourceDestXCoords(bitmapXStart,clippedDestRect.iTl.iX); |
|
1216 xLine.Construct(TPoint(aSourceRect.iTl.iX,aDestRect.iTl.iX), |
|
1217 TPoint(aSourceRect.iBr.iX,aDestRect.iBr.iX),TLinearDDA::ELeft); |
|
1218 xLine.JumpToYCoord2(sourceDestXCoords.iX,sourceDestXCoords.iY); |
|
1219 TPoint srcPixel(bitmapXStart % maskWidth,yCoord.iX % maskHeight); |
|
1220 TInt spaceLeft = 0; |
|
1221 TRgb maskRgbValue; |
|
1222 TUint32* maskScanLinePtr32 = NULL; |
|
1223 TPoint currentYValue(0,srcPixel.iY); |
|
1224 aMaskBitmap->GetScanLinePtr(maskScanLinePtr32, currentYValue, maskWidth, aMaskBase, lineScanPosMask); |
|
1225 // To implement non EGray256 mask support with EColor16MAP display mode, we convert |
|
1226 // the mask to EGray256. |
|
1227 if (maskDisplayMode != EGray256) // Convert scan-line to EGray256 and set maskScanLinePtr32 to the conversion. |
|
1228 { |
|
1229 aMaskBitmap->GetScanLine(maskScanLinePtr32, alphaBufferDes, currentYValue, maskWidth, EFalse, TPoint(0, 0), EGray256); |
|
1230 maskScanLinePtr32 = (TUint32*)alphaBuffer->Ptr(); |
|
1231 } |
|
1232 TUint8* maskScanLinePtr = reinterpret_cast<TUint8*>(maskScanLinePtr32); |
|
1233 |
|
1234 // Outer loop over all KScanLineLengths |
|
1235 FOREVER |
|
1236 { |
|
1237 aSourceBitmap->StretchScanLine(sourceDes,startPt,clipIncStrch,clipWidthPart,destWidth, |
|
1238 aSourceRect.iTl.iX,srceWidth, KZeroPoint ,EColor16MU,aSourceBase,lineScanPos); |
|
1239 // Inner loop to tile the mask if necessary |
|
1240 spaceLeft = clipWidthPart; |
|
1241 do { |
|
1242 srcPixel.iX = sourceDestXCoords.iX % maskWidth; |
|
1243 |
|
1244 // Invert the mask using the inversion mask. |
|
1245 maskBuffer[(sourceDestXCoords.iY-clippedDestRect.iTl.iX)%KScanLineLength]= |
|
1246 maskInverter^maskScanLinePtr[srcPixel.iX]; |
|
1247 xLine.NextStep(sourceDestXCoords); |
|
1248 } while (--spaceLeft>0); |
|
1249 |
|
1250 if (yCoord.iY == clippedDestRect.iTl.iY && startClip == clippedDestRect.iTl.iX) |
|
1251 { |
|
1252 aSourceBitmap->SetCompressionBookmark(lineScanPos,aSourceBase,NULL); |
|
1253 aMaskBitmap->SetCompressionBookmark(lineScanPosMask,aMaskBase,NULL); |
|
1254 } |
|
1255 drawDevice->WriteRgbAlphaLine(startClip,yCoord.iY,clipWidthPart,sourceBuffer,maskBuffer, GcDrawMode(iDrawMode)); |
|
1256 if (loopLast) |
|
1257 { |
|
1258 break; |
|
1259 } |
|
1260 startClip+=KScanLineLength; |
|
1261 if (clippedDestRect.iBr.iX - startClip <= KScanLineLength) |
|
1262 { |
|
1263 loopLast = ETrue; |
|
1264 clipWidthPart = clippedDestRect.iBr.iX - startClip; |
|
1265 } |
|
1266 clipIncStrch += KScanLineLength; |
|
1267 } |
|
1268 } |
|
1269 else |
|
1270 { |
|
1271 aSourceBitmap->StretchScanLine(scanLineDes,TPoint(bitmapXStart,yCoord.iX), |
|
1272 clipStrch,clipWidth,destWidth,aSourceRect.iTl.iX, |
|
1273 srceWidth, KZeroPoint ,dispMode,aSourceBase,lineScanPos2); |
|
1274 drawDevice->WriteLine(clippedDestRect.iTl.iX,yCoord.iY,clipWidth,scanLineBuffer,CGraphicsContext::EDrawModeXOR); |
|
1275 |
|
1276 TInt maskXStart = bitmapXStart % maskWidth; |
|
1277 if(maskWidth < sourceBmpWidth) |
|
1278 { |
|
1279 TPoint sourceDestXCoords(bitmapXStart,clippedDestRect.iTl.iX); |
|
1280 xLine.Construct(TPoint(aSourceRect.iTl.iX,aDestRect.iTl.iX), |
|
1281 TPoint(aSourceRect.iBr.iX,aDestRect.iBr.iX),TLinearDDA::ELeft); |
|
1282 xLine.JumpToYCoord2(sourceDestXCoords.iX,sourceDestXCoords.iY); |
|
1283 TPoint srcPixel(maskXStart,yCoord.iX % maskHeight); |
|
1284 TInt spaceLeft = clipWidth; |
|
1285 TPoint prevSourceDestXCoords(-1,-1); |
|
1286 TRgb maskRgbValue; |
|
1287 aMaskBitmap->GetScanLine(alphaBufferDes, TPoint(0,srcPixel.iY), maskWidth, EFalse, TPoint(0, 0), EGray256, aMaskBase, lineScanPosMask); |
|
1288 |
|
1289 // Loop to tile the mask |
|
1290 do { |
|
1291 if (sourceDestXCoords.iY != prevSourceDestXCoords.iY) |
|
1292 { |
|
1293 if (sourceDestXCoords.iX != prevSourceDestXCoords.iX) |
|
1294 { |
|
1295 srcPixel.iX = sourceDestXCoords.iX % maskWidth; |
|
1296 if (srcPixel.iX < 0) |
|
1297 srcPixel.iX += maskWidth; |
|
1298 maskRgbValue = TRgb::Gray256((*alphaBuffer)[srcPixel.iX]); |
|
1299 } |
|
1300 drawDevice->WriteRgb(sourceDestXCoords.iY,yCoord.iY,maskRgbValue,drawMode); |
|
1301 spaceLeft--; |
|
1302 } |
|
1303 prevSourceDestXCoords = sourceDestXCoords; |
|
1304 xLine.SingleStep(sourceDestXCoords); |
|
1305 } while (spaceLeft > 0); |
|
1306 } |
|
1307 else |
|
1308 { |
|
1309 // No need to tile the mask |
|
1310 aMaskBitmap->StretchScanLine(scanLineDes,TPoint(maskXStart,yCoord.iX % maskHeight), |
|
1311 clipStrch,clipWidth,destWidth,aSourceRect.iTl.iX, |
|
1312 srceWidth, KZeroPoint ,dispMode,aMaskBase,lineScanPosMask); |
|
1313 drawDevice->WriteLine(clippedDestRect.iTl.iX,yCoord.iY,clipWidth,scanLineBuffer,drawMode); |
|
1314 // Redo stretching of the aSourceBitmap scanline |
|
1315 aSourceBitmap->StretchScanLine(scanLineDes,TPoint(bitmapXStart,yCoord.iX), |
|
1316 clipStrch,clipWidth,destWidth,aSourceRect.iTl.iX, |
|
1317 srceWidth, KZeroPoint ,dispMode,aSourceBase,lineScanPos2); |
|
1318 } |
|
1319 |
|
1320 if (yCoord.iY==clippedDestRect.iTl.iY) |
|
1321 { |
|
1322 aSourceBitmap->SetCompressionBookmark(lineScanPos2,aSourceBase,NULL); |
|
1323 aMaskBitmap->SetCompressionBookmark(lineScanPosMask,aMaskBase,NULL); |
|
1324 } |
|
1325 |
|
1326 drawDevice->WriteLine(clippedDestRect.iTl.iX,yCoord.iY,clipWidth,scanLineBuffer,CGraphicsContext::EDrawModeXOR); |
|
1327 } |
|
1328 yLine.NextStep(yCoord); |
|
1329 } |
|
1330 } |
|
1331 |
|
1332 TInt CSwDirectGdiEngine::FastBlendInterface(const CBitwiseBitmap* aSource, const CBitwiseBitmap* aMask, MFastBlend*& aFastBlend) const |
|
1333 { |
|
1334 #if defined(__ALLOW_FAST_BLEND_DISABLE__) |
|
1335 if (iFastBlendDisabled) |
|
1336 return(KErrNotSupported); |
|
1337 #endif |
|
1338 if ((aSource && aSource->IsCompressed()) || (aMask && aMask->IsCompressed())) |
|
1339 return(KErrNotSupported); |
|
1340 TAny* interface=NULL; |
|
1341 TInt ret= iDrawDevice->GetInterface(KFastBlendInterfaceID, interface); |
|
1342 aFastBlend=(MFastBlend*)interface; |
|
1343 return(ret); |
|
1344 } |
|
1345 |
|
1346 /* |
|
1347 Returns the pixel-format to be used when extracting a scan-line through CBitwiseBitmap::GetScanLine(), CBitwiseBitmap::GetVerticalScanLine(), and CBitwiseBitmap::StretchScanLine() for consumption by CFbsDrawDevice::WriteLine() and associated methods. |
|
1348 |
|
1349 @see CBitwiseBitmap::GetScanLine() |
|
1350 @see CBitwiseBitmap::GetVerticalScanLine() |
|
1351 @see CBitwiseBitmap::StretchScanLine() |
|
1352 @see CFbsDrawDevice::WriteLine() |
|
1353 @internalComponent |
|
1354 */ |
|
1355 TDisplayMode CSwDirectGdiEngine::ScanLineBufferDisplayMode(CFbsDrawDevice* aDrawDevice) |
|
1356 { |
|
1357 return iDrawMode == DirectGdi::EDrawModeWriteAlpha ? aDrawDevice->DisplayMode() : aDrawDevice->ScanLineDisplayMode(); |
|
1358 } |