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1 /* |
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2 * Copyright (c) 2006-2008 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: base class for cnaves graphics context |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 #include "huicanvasgc.h" |
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21 #include "uiacceltk/HuiGc.h" |
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22 #include "uiacceltk/HuiEnv.h" |
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23 #include "uiacceltk/HuiImage.h" |
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24 #include "uiacceltk/HuiCanvasVisual.h" |
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25 #include "uiacceltk/HuiCurvePath.h" |
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26 #include "uiacceltk/HuiMappingFunctions.h" |
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27 #include "HuiRenderSurface.h" |
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28 #include "uiacceltk/HuiStatic.h" |
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29 #include "huicanvasrenderbuffer.h" |
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30 |
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31 #ifndef __SERIES60_30__ |
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32 #include "HuiTargetBitmap.h" |
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33 #endif |
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34 |
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35 #include <e32math.h> |
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36 |
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37 |
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38 EXPORT_C CHuiCanvasGc::CHuiCanvasGc(): |
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39 iPenColor(KRgbBlack), |
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40 iPenWidth(1.f), |
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41 iOpacity(1.f), |
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42 iPolygonDrawMode(EHuiNoFill), |
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43 iVerticalTextAlign(EHuiAlignVTop), |
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44 iHorizontalTextAlign(EHuiAlignHLeft), |
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45 iTextStyleId(EHuiTextStyleNormal), |
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46 iEffectiveOpacityEnabled(ETrue) |
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47 { |
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48 } |
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49 |
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50 EXPORT_C CHuiCanvasGc::~CHuiCanvasGc() |
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51 { |
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52 iClippingRegion.Close(); |
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53 iDelayedClipRegion.Close(); |
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54 |
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55 iTempRegion.Close(); |
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56 iTempRegion2.Close(); |
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57 } |
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58 |
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59 EXPORT_C void CHuiCanvasGc::SetGc(CHuiGc& aGc) |
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60 { |
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61 iGc = &aGc; |
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62 } |
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63 |
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64 EXPORT_C void CHuiCanvasGc::SetVisual(const CHuiCanvasVisual& aVisual) |
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65 { |
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66 iVisual = (CHuiCanvasVisual*)&aVisual; |
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67 } |
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68 |
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69 EXPORT_C void CHuiCanvasGc::Clip(const TRect& aClipRect) |
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70 { |
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71 if (!iGc) |
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72 { |
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73 return; |
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74 } |
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75 |
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76 switch (iClipMode) |
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77 { |
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78 case EHuiCanvasClipModeNormal: |
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79 case EHuiCanvasClipModeDelayed: |
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80 { |
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81 if (iClippingRegion.Count()) |
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82 { |
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83 CancelClipping(); |
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84 } |
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85 |
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86 if (!aClipRect.IsEmpty()) |
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87 { |
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88 iTempRegion.Clear(); |
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89 iTempRegion.AddRect(aClipRect); |
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90 ClipRegion(iTempRegion); |
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91 } |
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92 break; |
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93 } |
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94 case EHuiCanvasClipModeNone: |
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95 default: |
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96 { |
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97 // Do nothing |
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98 break; |
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99 } |
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100 } |
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101 } |
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102 |
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103 EXPORT_C void CHuiCanvasGc::ClipRegion(const TRegion& aClipRegion) |
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104 { |
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105 if (!iGc) |
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106 { |
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107 return; |
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108 } |
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109 |
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110 switch (iClipMode) |
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111 { |
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112 case EHuiCanvasClipModeNormal: |
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113 { |
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114 // If previous clipping region set, cancel it first. |
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115 if (iClippingRegion.Count()) |
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116 { |
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117 CancelClipping(); |
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118 } |
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119 |
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120 // Set new region, ignore empty rects if any |
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121 for (TInt i=0; i < aClipRegion.Count(); i++) |
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122 { |
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123 if (!aClipRegion[i].IsEmpty()) |
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124 { |
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125 iClippingRegion.AddRect(aClipRegion[i]); |
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126 } |
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127 } |
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128 |
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129 iClippingRegion.Tidy(); |
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130 |
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131 if (iClippingRegion.Count() == 1) |
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132 { |
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133 // If only one rect, then do simple clipping... |
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134 iGc->Enable(CHuiGc::EFeatureClipping); |
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135 iGc->PushClip(); |
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136 iGc->Clip(iClippingRegion[0]); |
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137 } |
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138 else if (iClippingRegion.Count() > 1) |
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139 { |
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140 // ...otherewise must do region clipping. |
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141 iGc->Enable(CHuiGc::EFeatureClipping); |
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142 iGc->PushClip(); |
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143 if (MaxNumberOfClipRects() > 1) |
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144 { |
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145 iGc->Clip(iClippingRegion); |
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146 } |
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147 else |
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148 { |
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149 // region clipping is not available, try boundingrect |
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150 iGc->Clip(iClippingRegion.BoundingRect()); |
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151 } |
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152 } |
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153 else |
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154 { |
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155 // No clip rects set, do nothing here. |
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156 } |
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157 break; |
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158 } |
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159 case EHuiCanvasClipModeDelayed: |
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160 { |
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161 // If previous clipping region set, cancel it first. |
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162 if (iClippingRegion.Count()) |
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163 { |
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164 CancelClipping(); |
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165 } |
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166 |
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167 // Set new region, ignore empty rects if any |
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168 for (TInt i=0; i < aClipRegion.Count(); i++) |
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169 { |
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170 if (!aClipRegion[i].IsEmpty()) |
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171 { |
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172 iClippingRegion.AddRect(aClipRegion[i]); |
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173 } |
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174 } |
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175 |
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176 iClippingRegion.Tidy(); |
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177 break; |
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178 } |
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179 case EHuiCanvasClipModeNone: |
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180 default: |
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181 { |
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182 // Do nothing |
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183 break; |
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184 } |
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185 } |
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186 } |
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187 |
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188 EXPORT_C void CHuiCanvasGc::CancelClipping() |
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189 { |
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190 if (!iGc) |
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191 { |
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192 return; |
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193 } |
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194 |
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195 |
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196 switch (iClipMode) |
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197 { |
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198 case EHuiCanvasClipModeNormal: |
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199 { |
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200 if (iClippingRegion.Count()) |
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201 { |
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202 iClippingRegion.Clear(); |
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203 iGc->Enable(CHuiGc::EFeatureClipping); |
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204 iGc->PopClip(); |
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205 } |
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206 break; |
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207 } |
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208 case EHuiCanvasClipModeDelayed: |
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209 { |
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210 iDelayedClipRegion.Clear(); |
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211 iClippingRegion.Clear(); |
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212 break; |
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213 } |
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214 case EHuiCanvasClipModeNone: |
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215 default: |
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216 { |
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217 // Do nothing |
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218 break; |
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219 } |
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220 } |
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221 } |
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222 |
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223 EXPORT_C void CHuiCanvasGc::DrawImage(const CHuiTexture& aImage, const THuiRealRect& aDestinationRect) |
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224 { |
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225 if (!iGc) |
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226 { |
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227 return; |
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228 } |
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229 |
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230 THuiRealRect srcRect = THuiRealRect(TPoint(0,0), aImage.Size() ); |
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231 DrawImage(aImage, aDestinationRect, srcRect); |
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232 } |
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233 |
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234 EXPORT_C void CHuiCanvasGc::DrawText(const CHuiTextMesh& aTextMesh, const THuiRealRect& aDestinationRect) |
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235 { |
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236 if (!iGc) |
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237 { |
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238 return; |
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239 } |
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240 |
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241 Setup(); |
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242 |
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243 EnableBlendingIfNeeded(); |
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244 |
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245 THuiTextStyle* textStyle = CHuiStatic::Env().TextStyleManager().TextStyle(iTextStyleId); |
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246 if (textStyle) |
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247 { |
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248 iGc->SetFont(textStyle->Font()); |
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249 } |
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250 iGc->SetAlign(iHorizontalTextAlign, iVerticalTextAlign); |
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251 |
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252 EnableDelayedClippingIfNeeded(aDestinationRect); |
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253 |
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254 while (ClipNext()) |
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255 { |
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256 iGc->DrawText(aTextMesh, aDestinationRect, 0.f); |
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257 } |
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258 |
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259 DisableDelayedClippingIfNeeded(); |
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260 |
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261 Cleanup(); |
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262 } |
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263 |
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264 |
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265 EXPORT_C void CHuiCanvasGc::DrawLines(RArray<THuiRealLine>& aLines) |
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266 { |
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267 if (!iGc) |
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268 { |
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269 return; |
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270 } |
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271 |
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272 Setup(); |
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273 |
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274 EnableBlendingIfNeeded(); |
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275 |
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276 EnableDelayedClippingIfNeeded(aLines); |
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277 |
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278 while (ClipNext()) |
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279 { |
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280 DoDrawLines(aLines); |
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281 } |
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282 |
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283 DisableDelayedClippingIfNeeded(); |
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284 |
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285 Cleanup(); |
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286 } |
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287 |
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288 EXPORT_C void CHuiCanvasGc::DoDrawLines(RArray<THuiRealLine>& aLines) |
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289 { |
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290 for(TInt i=0; i<aLines.Count(); i++) |
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291 { |
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292 TPoint start = aLines[i].iStart; |
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293 TPoint end = aLines[i].iEnd; |
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294 iGc->DrawLine(start, end, iPenWidth); |
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295 } |
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296 } |
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297 |
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298 |
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299 EXPORT_C void CHuiCanvasGc::DrawEllipse(const THuiRealRect& aDestinationRect) |
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300 { |
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301 if (!iGc) |
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302 { |
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303 return; |
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304 } |
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305 double startx = aDestinationRect.iTl.iX + aDestinationRect.Width(); |
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306 double starty = aDestinationRect.iTl.iY + aDestinationRect.Height()/2; |
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307 |
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308 DrawArc(aDestinationRect, THuiRealPoint(startx,starty), THuiRealPoint(startx,starty)); |
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309 } |
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310 |
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311 EXPORT_C void CHuiCanvasGc::DrawRoundRect(const THuiRealRect& aDestinationRect, |
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312 const THuiRealSize& aSize) |
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313 { |
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314 if (!iGc) |
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315 { |
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316 return; |
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317 } |
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318 |
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319 Setup(); |
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320 |
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321 EnableDelayedClippingIfNeeded(aDestinationRect); |
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322 |
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323 while (ClipNext()) |
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324 { |
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325 DoDrawRoundRect(aDestinationRect, aSize); |
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326 } |
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327 |
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328 DisableDelayedClippingIfNeeded(); |
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329 |
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330 Cleanup(); |
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331 } |
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332 |
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333 EXPORT_C void CHuiCanvasGc::DoDrawRoundRect(const THuiRealRect& aDestinationRect, |
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334 const THuiRealSize& aSize) |
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335 { |
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336 THuiRealSize cornerRectSize = THuiRealSize( 2*aSize.iWidth, 2*aSize.iHeight); |
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337 |
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338 THuiRealPoint topLeftCornerRectTL=aDestinationRect.iTl; |
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339 THuiRealRect topLeftCornerRect = THuiRealRect(topLeftCornerRectTL,cornerRectSize); |
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340 |
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341 THuiRealPoint topRightCornerRectTL=THuiRealPoint |
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342 (aDestinationRect.iTl.iX + aDestinationRect.Width()-2*(aSize.iWidth), aDestinationRect.iTl.iY); |
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343 THuiRealRect topRightCornerRect = THuiRealRect(topRightCornerRectTL, cornerRectSize); |
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344 |
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345 THuiRealPoint bottomRightCornerRectTL = THuiRealPoint |
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346 (aDestinationRect.iBr.iX-(2*aSize.iWidth),aDestinationRect.iBr.iY-(2*aSize.iHeight)); |
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347 THuiRealRect bottomRightCornerRect = THuiRealRect(bottomRightCornerRectTL, cornerRectSize); |
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348 |
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349 THuiRealPoint bottomLeftCornerRectTL = THuiRealPoint(aDestinationRect.iTl.iX, |
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350 aDestinationRect.iTl.iY + aDestinationRect.Height() -2*(aSize.iHeight)); |
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351 THuiRealRect bottomLeftCornerRect = THuiRealRect(bottomLeftCornerRectTL,cornerRectSize); |
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352 |
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353 THuiRealPoint topLeftArcStart = THuiRealPoint(topLeftCornerRectTL.iX + aSize.iWidth, topLeftCornerRectTL.iY); |
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354 THuiRealPoint topLeftArcEnd = THuiRealPoint(topLeftCornerRectTL.iX, topLeftCornerRectTL.iY + aSize.iHeight); |
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355 DoDrawArc(topLeftCornerRect, topLeftArcStart,topLeftArcEnd); |
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356 |
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357 THuiRealPoint topRightArcStart = THuiRealPoint(topRightCornerRectTL.iX + 2*aSize.iWidth, |
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358 topRightCornerRectTL.iY + aSize.iHeight); |
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359 THuiRealPoint topRightArcEnd = THuiRealPoint(topRightCornerRectTL.iX + aSize.iWidth, topRightCornerRectTL.iY); |
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360 DoDrawArc(topRightCornerRect, topRightArcStart, topRightArcEnd); |
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361 |
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362 THuiRealPoint bottomRightArcStart = THuiRealPoint(bottomRightCornerRectTL.iX + aSize.iWidth, |
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363 bottomRightCornerRectTL.iY + 2*aSize.iHeight); |
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364 THuiRealPoint bottomRightArcEnd = THuiRealPoint(bottomRightCornerRectTL.iX + 2*aSize.iWidth, |
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365 bottomRightCornerRectTL.iY + aSize.iHeight); |
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366 DoDrawArc(bottomRightCornerRect,bottomRightArcStart ,bottomRightArcEnd); |
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367 |
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368 THuiRealPoint bottomLeftArcStart = THuiRealPoint(bottomLeftCornerRectTL.iX, bottomLeftCornerRectTL.iY + |
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369 aSize.iHeight); |
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370 THuiRealPoint bottomLeftArcEnd = THuiRealPoint(bottomLeftCornerRectTL.iX + |
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371 aSize.iWidth, bottomLeftCornerRectTL.iY + 2*aSize.iHeight); |
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372 DoDrawArc(bottomLeftCornerRect, bottomLeftArcStart, bottomLeftArcEnd); |
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373 if(iPolygonDrawMode) |
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374 { |
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375 RArray<THuiRealRect> rects; |
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376 rects.Append(THuiRealRect(topLeftArcStart,bottomRightArcStart)); |
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377 rects.Append(THuiRealRect(topLeftArcEnd, THuiRealSize(aSize.iWidth,aDestinationRect.Height()-(2*aSize.iHeight)))); |
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378 rects.Append(THuiRealRect(THuiRealPoint(topRightArcStart.iX - aSize.iWidth,topRightArcStart.iY), |
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379 THuiRealSize(aSize.iWidth,aDestinationRect.Height()-(2*aSize.iHeight)))); |
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380 |
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381 DoDrawRects(rects); |
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382 rects.Close(); |
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383 } |
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384 else |
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385 { |
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386 RArray<THuiRealLine> lines; |
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387 lines.Append(THuiRealLine(topLeftArcStart,topRightArcEnd)); |
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388 lines.Append(THuiRealLine(topLeftArcEnd, bottomLeftArcStart)); |
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389 lines.Append(THuiRealLine(bottomLeftArcEnd, bottomRightArcStart)); |
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390 lines.Append(THuiRealLine(bottomRightArcEnd, topRightArcStart)); |
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391 DoDrawLines(lines); |
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392 lines.Close(); |
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393 } |
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394 } |
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395 |
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396 |
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397 EXPORT_C void CHuiCanvasGc::DrawPie(const THuiRealRect& aDestinationRect, |
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398 const THuiRealPoint& aStart, const THuiRealPoint& aEnd) |
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399 { |
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400 if (!iGc) |
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401 { |
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402 return; |
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403 } |
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404 |
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405 Setup(); |
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406 |
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407 EnableDelayedClippingIfNeeded(aDestinationRect); |
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408 |
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409 while (ClipNext()) |
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410 { |
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411 DoDrawPie( aDestinationRect, aStart, aEnd); |
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412 } |
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413 |
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414 DisableDelayedClippingIfNeeded(); |
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415 |
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416 Cleanup(); |
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417 } |
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418 |
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419 EXPORT_C void CHuiCanvasGc::DoDrawPie(const THuiRealRect& aDestinationRect, |
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420 const THuiRealPoint& aStart, const THuiRealPoint& aEnd) |
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421 { |
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422 double startx = aDestinationRect.iTl.iX + aDestinationRect.Width()/2; |
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423 double starty = aDestinationRect.iTl.iY + aDestinationRect.Height()/2; |
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424 DoDrawPie( aDestinationRect, aStart, aEnd); |
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425 } |
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426 |
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427 EXPORT_C void CHuiCanvasGc::DrawArc(const THuiRealRect& aDestinationRect, |
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428 const THuiRealPoint& aStart, const THuiRealPoint& aEnd) |
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429 { |
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430 if (!iGc) |
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431 { |
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432 return; |
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433 } |
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434 |
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435 Setup(); |
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436 |
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437 EnableBlendingIfNeeded(); |
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438 |
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439 EnableDelayedClippingIfNeeded(aDestinationRect); |
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440 |
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441 while (ClipNext()) |
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442 { |
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443 DoDrawArc(aDestinationRect, aStart, aEnd); |
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444 } |
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445 |
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446 DisableDelayedClippingIfNeeded(); |
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447 |
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448 Cleanup(); |
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449 } |
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450 |
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451 EXPORT_C void CHuiCanvasGc::DoDrawArc(const THuiRealRect& aDestinationRect, |
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452 const THuiRealPoint& aStart, const THuiRealPoint& aEnd) |
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453 { |
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454 TPoint start = aStart; |
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455 TPoint end = aEnd; |
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456 TReal startx = aDestinationRect.iTl.iX; |
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457 TReal starty = aDestinationRect.iTl.iY; |
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458 TReal rx = aDestinationRect.Width()/2; |
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459 TReal ry = aDestinationRect.Height()/2; |
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460 startx += rx; |
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461 starty += ry; |
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462 //Check if given start and end point lie on ellipse, if not, |
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463 //Find the point of intersection of ellipse with line joing to ellipse origin and start point |
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464 //and ellipse origin and end point |
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465 if ( ((aStart.iX-startx)*(aStart.iX-startx)/(rx*rx) + (aStart.iY-starty)*(aStart.iY-starty)/(ry*ry))!=1 ) |
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466 { |
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467 TReal m = (aStart.iY-starty)/(aStart.iX - startx); |
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468 TReal intersectionPointX; |
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469 TReal src = (rx*rx*ry*ry)/((ry*ry)+(rx*rx*m*m)); |
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470 Math::Sqrt(intersectionPointX,src); |
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471 TReal intersectionPointY = starty + (m*intersectionPointX); |
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472 intersectionPointX = intersectionPointX + startx; |
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473 start.iX = intersectionPointX; |
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474 start.iY = intersectionPointY; |
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475 } |
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476 if ( ((aEnd.iX-startx)*(aEnd.iX-startx)/(rx*rx) + (aEnd.iY-starty)*(aEnd.iY-starty)/(ry*ry))!=1 ) |
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477 { |
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478 TReal m = (aEnd.iY-starty)/(aEnd.iX - startx); |
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479 TReal intersectionPointX; |
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480 TReal src = (rx*rx*ry*ry)/((ry*ry)+(rx*rx*m*m)); |
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481 Math::Sqrt(intersectionPointX,src); |
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482 TReal intersectionPointY = (m*intersectionPointX) + starty; |
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483 intersectionPointX = intersectionPointX + startx; |
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484 end.iX = intersectionPointX; |
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485 end.iY = intersectionPointY; |
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486 } |
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487 TReal startAngle = 0; |
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488 Math::ATan(startAngle,(starty-start.iY),(start.iX-startx)); |
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489 startAngle = (startAngle*180)/KPi; |
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490 |
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491 TReal endAngle = 0; |
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492 Math::ATan(endAngle,(starty-end.iY),(end.iX-startx)); |
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493 endAngle = (endAngle*180)/KPi; |
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494 |
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495 if ( endAngle <= startAngle ) |
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496 endAngle = 360 + endAngle; |
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497 |
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498 // this is very slow, needs to be re-implemented |
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499 if(iPolygonDrawMode) |
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500 { |
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501 TReal x,y,newx,newy; |
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502 x = startx; |
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503 y = starty; |
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504 newx = x; |
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505 newy = y; |
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506 RArray<THuiRealPoint> points; |
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507 for(TInt i = -endAngle; i <-startAngle ; i++) |
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508 { |
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509 double a = double(i) * KPi / 180.0; |
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510 double sin, cos; |
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511 |
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512 Math::Sin( sin, a ); |
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513 Math::Cos( cos, a ); |
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514 |
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515 newx = startx + cos * rx; |
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516 newy = starty + sin * ry; |
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517 |
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518 points.Append(THuiRealPoint(x,y)); |
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519 points.Append(THuiRealPoint(newx, newy)); |
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520 |
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521 x = newx; |
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522 y = newy; |
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523 } |
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524 DoDrawPolygon(points); |
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525 points.Close(); |
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526 } |
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527 else |
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528 { |
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529 CHuiCurvePath* path = NULL; |
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530 TRAPD(error, path = CHuiCurvePath::NewL()); |
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531 if(error ==KErrNone) |
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532 { |
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533 TRAP(error,path->AppendArcL(THuiRealPoint(startx, starty), THuiRealSize(rx, ry), -startAngle, -endAngle, 1)); |
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534 if(error ==KErrNone) |
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535 { |
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536 THuiLinearMappingFunction alphaFunc; |
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537 alphaFunc.iOffset = iOpacity; |
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538 THuiLinearMappingFunction widthFunc; |
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539 widthFunc.iOffset = iPenWidth; |
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540 |
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541 const TPoint pt(0,0); |
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542 RHuiOwnedPointer<CHuiCurvePath> iPath; |
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543 iPath.Set(path, EHuiHasOwnership); |
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544 |
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545 iGc->DrawPath(iPath.Ref(), pt, 0.0, 1.0, &alphaFunc, &widthFunc); |
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546 } |
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547 } |
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548 } |
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549 } |
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550 |
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551 |
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552 EXPORT_C void CHuiCanvasGc::DrawPoints(RArray<THuiRealPoint>& aPoints) |
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553 { |
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554 if (!iGc) |
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555 { |
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556 return; |
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557 } |
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558 |
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559 Setup(); |
|
560 |
|
561 EnableBlendingIfNeeded(); |
|
562 |
|
563 EnableDelayedClippingIfNeeded(aPoints); |
|
564 |
|
565 while (ClipNext()) |
|
566 { |
|
567 DoDrawPoints(aPoints); |
|
568 } |
|
569 |
|
570 DisableDelayedClippingIfNeeded(); |
|
571 |
|
572 Cleanup(); |
|
573 } |
|
574 |
|
575 EXPORT_C void CHuiCanvasGc::DoDrawPoints(RArray<THuiRealPoint>& aPoints) |
|
576 { |
|
577 for(TInt i=0; i< aPoints.Count(); i++) |
|
578 { |
|
579 TInt TlOffset = TInt(iPenWidth/2); |
|
580 TInt BrOffset = TInt(TReal(iPenWidth)/2.f + 0.5f); |
|
581 TPoint Tl = TPoint(aPoints[i].iX - TlOffset, aPoints[i].iY - TlOffset); |
|
582 TPoint Br = TPoint(aPoints[i].iX + BrOffset, aPoints[i].iY + BrOffset); |
|
583 iGc->DrawRect(TRect(Tl, Br)); |
|
584 } |
|
585 } |
|
586 |
|
587 |
|
588 EXPORT_C void CHuiCanvasGc::DrawPolygon(RArray<THuiRealPoint>& aPoints) |
|
589 { |
|
590 if (!iGc) |
|
591 { |
|
592 return; |
|
593 } |
|
594 |
|
595 Setup(); |
|
596 |
|
597 EnableBlendingIfNeeded(); |
|
598 |
|
599 EnableDelayedClippingIfNeeded(aPoints); |
|
600 |
|
601 while (ClipNext()) |
|
602 { |
|
603 DoDrawPolygon(aPoints); |
|
604 } |
|
605 |
|
606 DisableDelayedClippingIfNeeded(); |
|
607 |
|
608 Cleanup(); |
|
609 } |
|
610 |
|
611 EXPORT_C void CHuiCanvasGc::DoDrawPolygon(RArray<THuiRealPoint>& aPoints) |
|
612 { |
|
613 TInt i=0; |
|
614 for(; i<(aPoints.Count()-1); i++) |
|
615 { |
|
616 iGc->DrawLine(aPoints[i], aPoints[i+1], iPenWidth); |
|
617 } |
|
618 iGc->DrawLine(aPoints[i], aPoints[0], iPenWidth); |
|
619 } |
|
620 |
|
621 |
|
622 EXPORT_C void CHuiCanvasGc::DrawRects(RArray<THuiRealRect>& aRects) |
|
623 { |
|
624 if (!iGc) |
|
625 { |
|
626 return; |
|
627 } |
|
628 |
|
629 Setup(); |
|
630 |
|
631 EnableBlendingIfNeeded(); |
|
632 |
|
633 EnableDelayedClippingIfNeeded(aRects); |
|
634 |
|
635 while (ClipNext()) |
|
636 { |
|
637 DoDrawRects(aRects); |
|
638 } |
|
639 |
|
640 DisableDelayedClippingIfNeeded(); |
|
641 |
|
642 Cleanup(); |
|
643 } |
|
644 |
|
645 EXPORT_C void CHuiCanvasGc::DoDrawRects(RArray<THuiRealRect>& aRects) |
|
646 { |
|
647 for(TInt i=0; i<aRects.Count(); i++) |
|
648 { |
|
649 TRect rect = aRects[i].Round(); |
|
650 if (rect.Height() > 0 && rect.Width() > 0) |
|
651 { |
|
652 if(iPolygonDrawMode == 0) |
|
653 { |
|
654 // By definition, symbian TRect Br coordinates are outside of the rect so subract those here first |
|
655 rect.iBr.iX--; |
|
656 rect.iBr.iY--; |
|
657 |
|
658 // TODO: following does overlapping drawing at the corners, it could be fixed but might not be |
|
659 // trivial if pensize is bigger than 1 |
|
660 if (rect.Width()) |
|
661 iGc->DrawLine(TPoint(rect.iTl.iX, rect.iTl.iY), TPoint(rect.iBr.iX, rect.iTl.iY), iPenWidth); // Top |
|
662 |
|
663 if (rect.Height() > 2 && rect.Width() > 1) |
|
664 iGc->DrawLine(TPoint(rect.iBr.iX, rect.iTl.iY), TPoint(rect.iBr.iX, rect.iBr.iY), iPenWidth); // Right |
|
665 |
|
666 if (rect.Width() && rect.Height() > 1) |
|
667 iGc->DrawLine(TPoint(rect.iTl.iX, rect.iBr.iY), TPoint(rect.iBr.iX, rect.iBr.iY), iPenWidth); // Bottom |
|
668 |
|
669 if (rect.Height() > 2) |
|
670 iGc->DrawLine(TPoint(rect.iTl.iX, rect.iTl.iY), TPoint(rect.iTl.iX,rect.iBr.iY), iPenWidth); // Left |
|
671 } |
|
672 else |
|
673 { |
|
674 iGc->DrawRect(rect); |
|
675 } |
|
676 } |
|
677 } |
|
678 } |
|
679 |
|
680 EXPORT_C void CHuiCanvasGc::SetTextStyle(TInt aStyleId) |
|
681 { |
|
682 iTextStyleId = aStyleId; |
|
683 } |
|
684 |
|
685 EXPORT_C TInt CHuiCanvasGc::TextStyle() const |
|
686 { |
|
687 return iTextStyleId; |
|
688 } |
|
689 |
|
690 EXPORT_C void CHuiCanvasGc::SetPenColor(const TRgb& aColor) |
|
691 { |
|
692 iPenColor = aColor; |
|
693 } |
|
694 |
|
695 EXPORT_C void CHuiCanvasGc::SetPenWidth(const TReal32& aWidth) |
|
696 { |
|
697 iPenWidth = aWidth; |
|
698 } |
|
699 |
|
700 EXPORT_C void CHuiCanvasGc::SetOpacity(const TReal32& aOpacity) |
|
701 { |
|
702 iOpacity = aOpacity; |
|
703 } |
|
704 |
|
705 EXPORT_C void CHuiCanvasGc::SetPolygonDrawMode(THuiFillMode aPolygonDrawMode) |
|
706 { |
|
707 iPolygonDrawMode = aPolygonDrawMode; |
|
708 } |
|
709 |
|
710 EXPORT_C void CHuiCanvasGc::SetTextAlign(THuiAlignHorizontal aAlignHorizontal, THuiAlignVertical aAlignVertical) |
|
711 { |
|
712 iVerticalTextAlign = aAlignVertical; |
|
713 iHorizontalTextAlign = aAlignHorizontal; |
|
714 } |
|
715 |
|
716 EXPORT_C void CHuiCanvasGc::SetDefaults() |
|
717 { |
|
718 SetTextStyle(0); |
|
719 SetPenColor(TRgb(255,255,255)); |
|
720 SetPenWidth(1.0); |
|
721 SetOpacity(1.0); |
|
722 SetPolygonDrawMode(EHuiNoFill); |
|
723 SetTextAlign(EHuiAlignHLeft, EHuiAlignVTop); |
|
724 SetDrawMode(EHuiCanvasDrawModeBlend); |
|
725 EnableEffectiveOpacity(ETrue); |
|
726 SetPolygonFillTexture(NULL); |
|
727 SetPolygonFillTextureOrigin(TPoint(0,0)); |
|
728 CancelClipping(); |
|
729 } |
|
730 |
|
731 // Transformations |
|
732 EXPORT_C void CHuiCanvasGc::LoadIdentity() |
|
733 { |
|
734 iGc->Pop(EHuiGcMatrixModel); |
|
735 iGc->Push(EHuiGcMatrixModel); |
|
736 } |
|
737 |
|
738 EXPORT_C void CHuiCanvasGc::Translate(const TReal32& aX, const TReal32& aY, const TReal32& aZ) |
|
739 { |
|
740 if (!iGc) |
|
741 { |
|
742 return; |
|
743 } |
|
744 |
|
745 iGc->SetAlign(EHuiAlignHLeft, EHuiAlignVTop); |
|
746 iGc->Translate(EHuiGcMatrixModel, aX, aY, aZ); |
|
747 } |
|
748 |
|
749 EXPORT_C void CHuiCanvasGc::Scale(const TReal32& aX, const TReal32& aY, const TReal32& aZ) |
|
750 { |
|
751 if (!iGc) |
|
752 { |
|
753 return; |
|
754 } |
|
755 |
|
756 iGc->SetAlign(EHuiAlignHLeft, EHuiAlignVTop); |
|
757 iGc->Scale(EHuiGcMatrixModel, aX, aY, aZ); |
|
758 } |
|
759 |
|
760 EXPORT_C void CHuiCanvasGc::Rotate(const TReal32& aAngle, const TReal32& aX, const TReal32& aY, const TReal32& aZ) |
|
761 { |
|
762 if (!iGc) |
|
763 { |
|
764 return; |
|
765 } |
|
766 |
|
767 iGc->SetAlign(EHuiAlignHLeft, EHuiAlignVTop); |
|
768 iGc->Rotate(EHuiGcMatrixModel, aAngle, aX, aY, aZ); |
|
769 } |
|
770 |
|
771 EXPORT_C TInt CHuiCanvasGc::TextVerticalAlign() const |
|
772 { |
|
773 return iVerticalTextAlign; |
|
774 } |
|
775 |
|
776 EXPORT_C TInt CHuiCanvasGc::TextHorizontalAlign() const |
|
777 { |
|
778 return iHorizontalTextAlign; |
|
779 } |
|
780 |
|
781 EXPORT_C TReal32 CHuiCanvasGc::PenWidth() const |
|
782 { |
|
783 return iPenWidth; |
|
784 } |
|
785 |
|
786 EXPORT_C THuiFillMode CHuiCanvasGc::PolygonDrawMode() const |
|
787 { |
|
788 return iPolygonDrawMode; |
|
789 } |
|
790 |
|
791 EXPORT_C void CHuiCanvasGc::DrawImage(const CHuiTexture& aImage, const THuiRealRect& aDestinationRect, const THuiRealRect& aSourceRect) |
|
792 { |
|
793 DrawImage(aImage, aDestinationRect, aSourceRect, CHuiGc::EStretchFull); |
|
794 } |
|
795 |
|
796 EXPORT_C void CHuiCanvasGc::DrawImage(const CHuiTexture& aImage, |
|
797 const THuiRealRect& aDestinationRect, |
|
798 const THuiRealRect& aSourceRect, |
|
799 CHuiGc::TStretchMode aStretchMode) |
|
800 { |
|
801 if (!iGc) |
|
802 { |
|
803 return; |
|
804 } |
|
805 |
|
806 Setup(); |
|
807 |
|
808 THuiImage image = THuiImage(aImage); |
|
809 |
|
810 // If renderer supports texture coordinates, we can use those to specify subset of image |
|
811 EnableBlendingIfNeeded(&aImage); |
|
812 |
|
813 TSize textureSize = aImage.Size(); |
|
814 |
|
815 if (textureSize.iWidth > 0 && textureSize.iHeight > 0) |
|
816 { |
|
817 THuiRealRect fullTextureRect = THuiRealRect(TPoint(0,0), aImage.Size()); |
|
818 THuiRealRect partialTextureRect = fullTextureRect; |
|
819 |
|
820 // Calculate intersection |
|
821 if (partialTextureRect.iTl.iX<aSourceRect.iTl.iX) |
|
822 partialTextureRect.iTl.iX=aSourceRect.iTl.iX; |
|
823 if (partialTextureRect.iTl.iY<aSourceRect.iTl.iY) |
|
824 partialTextureRect.iTl.iY=aSourceRect.iTl.iY; |
|
825 if (partialTextureRect.iBr.iX>aSourceRect.iBr.iX) |
|
826 partialTextureRect.iBr.iX=aSourceRect.iBr.iX; |
|
827 if (partialTextureRect.iBr.iY>aSourceRect.iBr.iY) |
|
828 partialTextureRect.iBr.iY=aSourceRect.iBr.iY; |
|
829 |
|
830 TReal32 tlX = TReal32(partialTextureRect.iTl.iX)/TReal32(textureSize.iWidth); |
|
831 TReal32 tlY = TReal32(partialTextureRect.iTl.iY)/TReal32(textureSize.iHeight); |
|
832 TReal32 brX = TReal32(partialTextureRect.iBr.iX)/TReal32(textureSize.iWidth); |
|
833 TReal32 brY = TReal32(partialTextureRect.iBr.iY)/TReal32(textureSize.iHeight); |
|
834 |
|
835 image.SetTexCoords(tlX,tlY,brX, brY); |
|
836 |
|
837 TSize usedSize = aDestinationRect.Size().Round(); |
|
838 |
|
839 if(aStretchMode != CHuiGc::EStretchFull && |
|
840 aStretchMode != CHuiGc::EStretchHorizontal && |
|
841 partialTextureRect.Height() < usedSize.iHeight) |
|
842 { |
|
843 usedSize.iHeight = partialTextureRect.Height(); |
|
844 } |
|
845 |
|
846 if(aStretchMode != CHuiGc::EStretchFull && |
|
847 aStretchMode != CHuiGc::EStretchVertical && |
|
848 partialTextureRect.Width() < usedSize.iWidth) |
|
849 { |
|
850 usedSize.iWidth = partialTextureRect.Width(); |
|
851 } |
|
852 |
|
853 TRect updatedArea = TRect(aDestinationRect.iTl.Round(), usedSize); |
|
854 |
|
855 if (usedSize.iHeight > 0 && usedSize.iWidth > 0) |
|
856 { |
|
857 EnableDelayedClippingIfNeeded(updatedArea); |
|
858 |
|
859 while (ClipNext()) |
|
860 { |
|
861 iGc->DrawImage(image, aDestinationRect.iTl, usedSize); |
|
862 } |
|
863 DisableDelayedClippingIfNeeded(); |
|
864 } |
|
865 } |
|
866 |
|
867 Cleanup(); |
|
868 } |
|
869 |
|
870 EXPORT_C void CHuiCanvasGc::Clear(const THuiRealRect& aRect) |
|
871 { |
|
872 if (!iGc) |
|
873 { |
|
874 return; |
|
875 } |
|
876 |
|
877 TReal32 effectiveOpacity = 1.f; |
|
878 if (iVisual && iEffectiveOpacityEnabled) |
|
879 { |
|
880 effectiveOpacity = iVisual->EffectiveOpacity(); |
|
881 } |
|
882 iGc->SetPenAlpha(TInt(iOpacity * effectiveOpacity * 255)); |
|
883 iGc->SetPenColor(iPenColor); |
|
884 iGc->SetAlign(EHuiAlignHLeft, EHuiAlignVTop); |
|
885 iGc->Disable(CHuiGc::EFeatureBlending); |
|
886 iGc->Enable(CHuiGc::EFeatureClipping); |
|
887 iGc->PushClip(); |
|
888 iGc->Clip(aRect.Round()); // takes transformations into account |
|
889 iGc->Clear(); |
|
890 iGc->PopClip(); |
|
891 iGc->Enable(CHuiGc::EFeatureBlending); |
|
892 } |
|
893 |
|
894 EXPORT_C void CHuiCanvasGc::ClearWithSkinBackground(const THuiRealRect& /*aRect*/) |
|
895 { |
|
896 // Implementation is renderspecific |
|
897 } |
|
898 |
|
899 |
|
900 EXPORT_C void CHuiCanvasGc::ClearWithBackgroundItems(const THuiRealRect& /*aRect*/, |
|
901 const RArray<THuiDisplayBackgroundItem>& /*aItems*/) |
|
902 { |
|
903 // Implementation is renderspecific |
|
904 } |
|
905 |
|
906 EXPORT_C void CHuiCanvasGc::EnableBlendingIfNeeded(const CHuiTexture* aTexture) |
|
907 { |
|
908 if (iDrawMode == EHuiCanvasDrawModeBlend) |
|
909 { |
|
910 iGc->Enable(CHuiGc::EFeatureBlending); |
|
911 |
|
912 // Optimization, enable blending only if really needed, on some HW blending slows performance. |
|
913 /* |
|
914 if ((iGc->PenColor().Alpha() == 255) && (iGc->PenAlpha() == 255) && (!aTexture || !aTexture->HasAlpha())) |
|
915 { |
|
916 iGc->Disable(CHuiGc::EFeatureBlending); |
|
917 } |
|
918 else |
|
919 { |
|
920 iGc->Enable(CHuiGc::EFeatureBlending); |
|
921 } |
|
922 */ |
|
923 } |
|
924 else if (iDrawMode == EHuiCanvasDrawModeNormal) |
|
925 { |
|
926 iGc->Disable(CHuiGc::EFeatureBlending); |
|
927 } |
|
928 else |
|
929 { |
|
930 // Unknown mode ! |
|
931 } |
|
932 } |
|
933 |
|
934 THuiCanvasDrawMode CHuiCanvasGc::DrawMode() const |
|
935 { |
|
936 return iDrawMode; |
|
937 } |
|
938 |
|
939 |
|
940 |
|
941 CHuiCanvasVisual* CHuiCanvasGc::Visual() const |
|
942 { |
|
943 return iVisual; |
|
944 } |
|
945 |
|
946 TRgb CHuiCanvasGc::PenColor() const |
|
947 { |
|
948 return iPenColor; |
|
949 } |
|
950 |
|
951 TReal32 CHuiCanvasGc::Opacity() const |
|
952 { |
|
953 return iOpacity; |
|
954 |
|
955 } |
|
956 |
|
957 EXPORT_C CHuiCanvasGc::TClipRectVisibility CHuiCanvasGc::IsClipped(const TRect& aRect) const |
|
958 { |
|
959 TClipRectVisibility isClipped = EFullyOutside; |
|
960 if (!iGc) |
|
961 { |
|
962 return isClipped; |
|
963 } |
|
964 |
|
965 // First check the active clipping region from GC... |
|
966 |
|
967 // aRect is untransformed, activeClippingRegion is transformed |
|
968 // so we must transform aRect first when we comapre it to activeClippingRegion... |
|
969 THuiRealRect transformed = aRect; |
|
970 iGc->TransformDirtyRect(transformed ); |
|
971 const TRegion& activeClippingRegion = iGc->ClipRegion(); |
|
972 |
|
973 isClipped = IsClipped(transformed.Round(), activeClippingRegion); |
|
974 //...fully outside of GC so it would not be drawn regardless of |
|
975 // the iClipRegion (if it is trying to do clipping), we can return immediately. |
|
976 if (isClipped == EFullyOutside && activeClippingRegion.Count()) |
|
977 { |
|
978 return isClipped; |
|
979 } |
|
980 //...not clipped by active clip region, check our own iClipRegion |
|
981 if (iClippingRegion.Count()) |
|
982 { |
|
983 isClipped = IsClipped(aRect, iClippingRegion); |
|
984 } |
|
985 |
|
986 return isClipped; |
|
987 } |
|
988 |
|
989 CHuiCanvasGc::TClipRectVisibility CHuiCanvasGc::IsClipped(const TRect& aRect, const TRegion& aClippingRegion) const |
|
990 { |
|
991 TClipRectVisibility isClipped = EFullyOutside; |
|
992 if (!aClippingRegion.Count()) |
|
993 { |
|
994 return EFullyInside; |
|
995 } |
|
996 |
|
997 if (!aRect.IsEmpty() && aClippingRegion.Count()) |
|
998 { |
|
999 #if 0 |
|
1000 TBool test = EFalse; |
|
1001 if (test) |
|
1002 { |
|
1003 for (TInt i=0; i<aClippingRegion.Count(); i++) |
|
1004 { |
|
1005 #ifdef _DEBUG |
|
1006 RDebug::Print(_L("aClippingRegion Rect: %d %d %d %d"), |
|
1007 aClippingRegion[i].iTl.iX, |
|
1008 aClippingRegion[i].iTl.iY, |
|
1009 aClippingRegion[i].iBr.iX, |
|
1010 aClippingRegion[i].iBr.iY); |
|
1011 #endif |
|
1012 } |
|
1013 } |
|
1014 #endif |
|
1015 |
|
1016 if (aClippingRegion.Intersects(aRect)) |
|
1017 { |
|
1018 iTempRegion.Clear(); |
|
1019 iTempRegion2.Clear(); |
|
1020 |
|
1021 iTempRegion.AddRect(aRect); |
|
1022 |
|
1023 iTempRegion2.Intersection(aClippingRegion, iTempRegion); |
|
1024 iTempRegion2.Tidy(); |
|
1025 |
|
1026 // Assume it is only partially inside region -> Clipped |
|
1027 isClipped = EPartialOverlap; |
|
1028 |
|
1029 if (iTempRegion2.Count() == 1) |
|
1030 { |
|
1031 if (iTempRegion2[0] == aRect) |
|
1032 { |
|
1033 // Fully inside region -> Not clipped |
|
1034 isClipped = EFullyInside; |
|
1035 } |
|
1036 } |
|
1037 |
|
1038 } |
|
1039 else |
|
1040 { |
|
1041 // No overlap -> aRect is completely outside region -> Clipped |
|
1042 isClipped = EFullyOutside; |
|
1043 } |
|
1044 } |
|
1045 return isClipped; |
|
1046 } |
|
1047 |
|
1048 |
|
1049 EXPORT_C CHuiCanvasGc::TClipRectVisibility CHuiCanvasGc::IsClipped(const TPoint& aPoint) const |
|
1050 { |
|
1051 return IsClipped(aPoint, iClippingRegion); |
|
1052 } |
|
1053 |
|
1054 CHuiCanvasGc::TClipRectVisibility CHuiCanvasGc::IsClipped(const TPoint& aPoint, const TRegion& aClippingRegion) const |
|
1055 { |
|
1056 if (iClippingRegion.Count() && !aClippingRegion.Contains(aPoint)) |
|
1057 { |
|
1058 return EFullyOutside; |
|
1059 } |
|
1060 else |
|
1061 { |
|
1062 return EFullyInside; |
|
1063 } |
|
1064 } |
|
1065 |
|
1066 CHuiCanvasGc::TClipRectVisibility CHuiCanvasGc::IsClipped(const TRegion& aTestedRegion, const TRegion& aClippingRegion) const |
|
1067 { |
|
1068 TClipRectVisibility isWholeRegionClipped = EUnknown; |
|
1069 TInt count = aTestedRegion.Count(); |
|
1070 |
|
1071 if (count == 0) |
|
1072 { |
|
1073 isWholeRegionClipped = EFullyOutside; |
|
1074 } |
|
1075 |
|
1076 for (TInt i=0; i<count; i++) |
|
1077 { |
|
1078 TClipRectVisibility isRectClipped = IsClipped(aTestedRegion[i], aClippingRegion); |
|
1079 if (isWholeRegionClipped == EFullyInside) |
|
1080 { |
|
1081 if (isRectClipped == EFullyOutside || |
|
1082 isRectClipped == EPartialOverlap ) |
|
1083 { |
|
1084 isWholeRegionClipped = EPartialOverlap; |
|
1085 } |
|
1086 } |
|
1087 else if (isWholeRegionClipped == EFullyOutside) |
|
1088 { |
|
1089 if (isRectClipped == EFullyInside || |
|
1090 isRectClipped == EPartialOverlap ) |
|
1091 { |
|
1092 isWholeRegionClipped = EPartialOverlap; |
|
1093 } |
|
1094 } |
|
1095 else if (isWholeRegionClipped == EPartialOverlap) |
|
1096 { |
|
1097 // No changes to isWholeRegionClipped in this case and no need to look further |
|
1098 break; |
|
1099 } |
|
1100 else |
|
1101 { |
|
1102 isWholeRegionClipped = isRectClipped; |
|
1103 } |
|
1104 } |
|
1105 return isWholeRegionClipped; |
|
1106 } |
|
1107 |
|
1108 |
|
1109 EXPORT_C void CHuiCanvasGc::SetClippingMode(THuiCanvasClipMode aClipMode) |
|
1110 { |
|
1111 iClipMode = aClipMode; |
|
1112 } |
|
1113 |
|
1114 EXPORT_C void CHuiCanvasGc::SetDrawMode(THuiCanvasDrawMode aDrawMode) |
|
1115 { |
|
1116 iDrawMode = aDrawMode; |
|
1117 } |
|
1118 |
|
1119 EXPORT_C CHuiCanvasGc::TClipRectVisibility CHuiCanvasGc::EnableDelayedClippingIfNeeded(const THuiRealRect& aUpdatedRect) |
|
1120 { |
|
1121 iDelayedClipCount = 0; |
|
1122 iDelayedClipVisibility = EPartialOverlap; |
|
1123 if (iClipMode == EHuiCanvasClipModeDelayed) |
|
1124 { |
|
1125 iDelayedClipVisibility = IsClipped(aUpdatedRect.Round()); |
|
1126 if ( iDelayedClipVisibility == EPartialOverlap ) |
|
1127 { |
|
1128 // Could copy only needed rects to avoid excessive clipping |
|
1129 iDelayedClipRegion.Copy(iClippingRegion); |
|
1130 } |
|
1131 } |
|
1132 return iDelayedClipVisibility; |
|
1133 } |
|
1134 |
|
1135 EXPORT_C CHuiCanvasGc::TClipRectVisibility CHuiCanvasGc::EnableDelayedClippingIfNeeded(const RArray<THuiRealRect>& aUpdatedRects) |
|
1136 { |
|
1137 iDelayedClipCount = 0; |
|
1138 iDelayedClipVisibility = EPartialOverlap; |
|
1139 if (iClipMode == EHuiCanvasClipModeDelayed) |
|
1140 { |
|
1141 for (TInt i=0; i<aUpdatedRects.Count(); i++) |
|
1142 { |
|
1143 iDelayedClipVisibility = IsClipped(aUpdatedRects[i].Round()); |
|
1144 if (iDelayedClipVisibility == EPartialOverlap) |
|
1145 { |
|
1146 // Could copy only needed rects to avoid excessive clipping |
|
1147 iDelayedClipRegion.Copy(iClippingRegion); |
|
1148 break; |
|
1149 } |
|
1150 } |
|
1151 } |
|
1152 return iDelayedClipVisibility; |
|
1153 } |
|
1154 |
|
1155 |
|
1156 EXPORT_C CHuiCanvasGc::TClipRectVisibility CHuiCanvasGc::EnableDelayedClippingIfNeeded(const RArray<THuiRealPoint>& aUpdatedPoints) |
|
1157 { |
|
1158 iDelayedClipCount = 0; |
|
1159 iDelayedClipVisibility = EPartialOverlap; |
|
1160 |
|
1161 if (iClipMode == EHuiCanvasClipModeDelayed) |
|
1162 { |
|
1163 for (TInt i=0; i<aUpdatedPoints.Count();i++) |
|
1164 { |
|
1165 iDelayedClipVisibility = IsClipped(aUpdatedPoints[i].Round()); |
|
1166 if (iDelayedClipVisibility != EFullyOutside) |
|
1167 { |
|
1168 // Could copy only needed rects to avoid excessive clipping |
|
1169 iDelayedClipRegion.Copy(iClippingRegion); |
|
1170 break; |
|
1171 } |
|
1172 } |
|
1173 } |
|
1174 return iDelayedClipVisibility; |
|
1175 } |
|
1176 |
|
1177 EXPORT_C CHuiCanvasGc::TClipRectVisibility CHuiCanvasGc::EnableDelayedClippingIfNeeded(const RArray<THuiRealLine>& aUpdatedLines) |
|
1178 { |
|
1179 iDelayedClipCount = 0; |
|
1180 TClipRectVisibility vis1 = EPartialOverlap; |
|
1181 TClipRectVisibility vis2 = EPartialOverlap; |
|
1182 |
|
1183 if (iClipMode == EHuiCanvasClipModeDelayed) |
|
1184 { |
|
1185 for (TInt i=0; i<aUpdatedLines.Count();i++) |
|
1186 { |
|
1187 TPoint start = aUpdatedLines[i].iStart.Round(); |
|
1188 TPoint end = aUpdatedLines[i].iEnd.Round(); |
|
1189 vis1 = IsClipped(start); |
|
1190 vis2 = IsClipped(end); |
|
1191 if ((vis1 != EFullyOutside) || (vis2 != EFullyOutside)) |
|
1192 { |
|
1193 // Could copy only needed rects to avoid excessive clipping |
|
1194 iDelayedClipRegion.Copy(iClippingRegion); |
|
1195 break; |
|
1196 } |
|
1197 } |
|
1198 } |
|
1199 if (vis1 == EFullyOutside && vis2 == EFullyOutside) |
|
1200 { |
|
1201 iDelayedClipVisibility = EFullyOutside; |
|
1202 } |
|
1203 else |
|
1204 { |
|
1205 iDelayedClipVisibility = EPartialOverlap; |
|
1206 } |
|
1207 return iDelayedClipVisibility; |
|
1208 } |
|
1209 |
|
1210 |
|
1211 |
|
1212 EXPORT_C TBool CHuiCanvasGc::ClipNext() |
|
1213 { |
|
1214 if (iDelayedClipVisibility != EFullyOutside && |
|
1215 iDelayedClipRegion.Count() && |
|
1216 iDelayedClipCount < iDelayedClipRegion.Count()) |
|
1217 { |
|
1218 if (iDelayedClipRectPushed) |
|
1219 { |
|
1220 iGc->PopClip(); |
|
1221 } |
|
1222 |
|
1223 iGc->Enable(CHuiGc::EFeatureClipping); |
|
1224 iGc->PushClip(); |
|
1225 iDelayedClipRectPushed = ETrue; |
|
1226 |
|
1227 if (MaxNumberOfClipRects() == 1) |
|
1228 { |
|
1229 iGc->Clip(iDelayedClipRegion[iDelayedClipCount]); |
|
1230 } |
|
1231 else |
|
1232 { |
|
1233 iGc->Clip(iDelayedClipRegion); |
|
1234 } |
|
1235 } |
|
1236 |
|
1237 iDelayedClipCount += MaxNumberOfClipRects(); |
|
1238 |
|
1239 if (iDelayedClipVisibility == EFullyOutside) |
|
1240 { |
|
1241 // If drawing would fall completely outside the clipping region, we are done. |
|
1242 return EFalse; |
|
1243 } |
|
1244 else |
|
1245 { |
|
1246 // Check how many times we must do the operation in case rederer does not support many clip rects at once |
|
1247 return (iDelayedClipCount <= iDelayedClipRegion.Count() || iDelayedClipCount == MaxNumberOfClipRects()); |
|
1248 } |
|
1249 } |
|
1250 |
|
1251 EXPORT_C void CHuiCanvasGc::DisableDelayedClippingIfNeeded() |
|
1252 { |
|
1253 iDelayedClipVisibility = EPartialOverlap; |
|
1254 iDelayedClipCount = 0; |
|
1255 if (iDelayedClipRegion.Count()) |
|
1256 { |
|
1257 if (iDelayedClipRectPushed) |
|
1258 { |
|
1259 iGc->PopClip(); |
|
1260 iDelayedClipRectPushed = EFalse; |
|
1261 } |
|
1262 |
|
1263 iDelayedClipRegion.Clear(); |
|
1264 } |
|
1265 } |
|
1266 |
|
1267 EXPORT_C void CHuiCanvasGc::Setup() |
|
1268 { |
|
1269 iOldPencolor = iGc->PenColor(); |
|
1270 iOldPenAlpha = iGc->PenAlpha(); |
|
1271 iGc->SetAlign(EHuiAlignHLeft, EHuiAlignVTop); |
|
1272 TReal32 effectiveOpacity = 1.f; |
|
1273 if (iVisual && iEffectiveOpacityEnabled) |
|
1274 { |
|
1275 effectiveOpacity = iVisual->EffectiveOpacity(); |
|
1276 } |
|
1277 iGc->SetPenAlpha(TInt(iOpacity * effectiveOpacity * 255)); |
|
1278 iGc->SetPenColor(iPenColor); |
|
1279 } |
|
1280 |
|
1281 EXPORT_C void CHuiCanvasGc::Cleanup() |
|
1282 { |
|
1283 iGc->SetPenAlpha(iOldPenAlpha); |
|
1284 iGc->SetPenColor(iOldPencolor); |
|
1285 } |
|
1286 |
|
1287 EXPORT_C TInt CHuiCanvasGc::MaxNumberOfClipRects() const |
|
1288 { |
|
1289 // By default only one at the time, but most renders override this |
|
1290 return 1; |
|
1291 } |
|
1292 |
|
1293 CHuiGc* CHuiCanvasGc::Gc() const |
|
1294 { |
|
1295 return iGc; |
|
1296 } |
|
1297 |
|
1298 EXPORT_C CHuiCanvasRenderBuffer* CHuiCanvasGc::CreateRenderBufferL(const TSize& /*aSize*/) |
|
1299 { |
|
1300 // Only deriving classes really create render targets |
|
1301 return NULL; |
|
1302 } |
|
1303 |
|
1304 EXPORT_C void CHuiCanvasGc::DrawImage(const CHuiCanvasRenderBuffer& aImage, const THuiRealPoint& aDestinationPoint) |
|
1305 { |
|
1306 if (!iGc) |
|
1307 { |
|
1308 return; |
|
1309 } |
|
1310 |
|
1311 THuiRealSize destinationSize = aImage.Size(); |
|
1312 THuiRealRect destinationRect(aDestinationPoint, destinationSize); |
|
1313 |
|
1314 Setup(); |
|
1315 |
|
1316 EnableBlendingIfNeeded(); |
|
1317 |
|
1318 EnableDelayedClippingIfNeeded(destinationRect.Round()); |
|
1319 |
|
1320 while (ClipNext()) |
|
1321 { |
|
1322 DoDrawRenderBuffer(aImage, aDestinationPoint); |
|
1323 } |
|
1324 |
|
1325 DisableDelayedClippingIfNeeded(); |
|
1326 |
|
1327 Cleanup(); |
|
1328 } |
|
1329 |
|
1330 EXPORT_C void CHuiCanvasGc::ClearRenderBuffer( CHuiCanvasRenderBuffer& aImage, const TRect & aRect ) |
|
1331 { |
|
1332 DoClearRenderBuffer(aImage, aRect); |
|
1333 } |
|
1334 EXPORT_C void CHuiCanvasGc::DoClearRenderBuffer( CHuiCanvasRenderBuffer& /*aImage*/, const TRect & /*aRect*/ ) |
|
1335 { |
|
1336 // only deriving classes implement this |
|
1337 } |
|
1338 |
|
1339 |
|
1340 EXPORT_C void CHuiCanvasGc::DoDrawRenderBuffer(const CHuiCanvasRenderBuffer& /*aImage*/, const THuiRealPoint& /*aDestinationPoint*/) |
|
1341 { |
|
1342 // Only deriving classes really draw render targets |
|
1343 } |
|
1344 |
|
1345 EXPORT_C void CHuiCanvasGc::PushTransformationMatrix() |
|
1346 { |
|
1347 if (!iGc) |
|
1348 { |
|
1349 return; |
|
1350 } |
|
1351 |
|
1352 iGc->Push(EHuiGcMatrixModel); |
|
1353 } |
|
1354 |
|
1355 EXPORT_C void CHuiCanvasGc::PopTransformationMatrix() |
|
1356 { |
|
1357 if (!iGc) |
|
1358 { |
|
1359 return; |
|
1360 } |
|
1361 |
|
1362 iGc->Pop(EHuiGcMatrixModel); |
|
1363 } |
|
1364 |
|
1365 void CHuiCanvasGc::RestoreState() const |
|
1366 { |
|
1367 if (!iGc) |
|
1368 { |
|
1369 return; |
|
1370 } |
|
1371 |
|
1372 iGc->RestoreState(); |
|
1373 } |
|
1374 |
|
1375 EXPORT_C void CHuiCanvasGc::RestoreFlaggedState() const |
|
1376 { |
|
1377 // Default implementation does not support flagged states in gc |
|
1378 RestoreState(); |
|
1379 } |
|
1380 |
|
1381 void CHuiCanvasGc::EnableEffectiveOpacity(TBool aEnable) |
|
1382 { |
|
1383 iEffectiveOpacityEnabled = aEnable; |
|
1384 } |
|
1385 |
|
1386 EXPORT_C void CHuiCanvasGc::SetPolygonFillTexture(CHuiTexture* aTexture) |
|
1387 { |
|
1388 iPolygonFillTexture = aTexture; |
|
1389 } |
|
1390 |
|
1391 EXPORT_C CHuiTexture* CHuiCanvasGc::PolygonFillTexture() const |
|
1392 { |
|
1393 return iPolygonFillTexture; |
|
1394 } |
|
1395 |
|
1396 EXPORT_C void CHuiCanvasGc::SetPolygonFillTextureOrigin(const TPoint& aOrigin) |
|
1397 { |
|
1398 iPolygonFillTextureOrigin = aOrigin; |
|
1399 } |
|
1400 |
|
1401 EXPORT_C TPoint CHuiCanvasGc::PolygonFillTextureOrigin() const |
|
1402 { |
|
1403 return iPolygonFillTextureOrigin; |
|
1404 } |
|
1405 |