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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: OpenVG 1.0 render surface. |
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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 #ifndef __HUIVG10RENDERSURFACE_H__ |
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21 #define __HUIVG10RENDERSURFACE_H__ |
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22 |
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23 |
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24 #include <e32base.h> |
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25 |
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26 #include <EGL/egl.h> |
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27 |
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28 #include "HuiRenderSurface.h" |
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29 #include "uiacceltk/HuiSessionObject.h" |
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30 |
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31 |
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32 /* Forward declarations. */ |
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33 class CHuiDisplay; |
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34 |
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35 |
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36 /** |
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37 * The render surface is a destination where rendered graphics will ultimately |
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38 * end up. This may be, e.g., the display frame buffer or a bitmap in memory. |
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39 */ |
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40 NONSHARABLE_CLASS(CHuiVg10RenderSurface) : public CBase, public MHuiRenderSurface, |
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41 public MHuiSessionObject |
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42 { |
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43 public: |
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44 |
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45 /* Constructors and destructor. */ |
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46 |
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47 static CHuiVg10RenderSurface* NewL(CHuiDisplay& aDisplay); |
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48 |
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49 static CHuiVg10RenderSurface* NewLC(CHuiDisplay& aDisplay); |
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50 |
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51 virtual ~CHuiVg10RenderSurface(); |
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52 |
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53 |
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54 /* Methods, implemets MHuiRenderSurface interface. */ |
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55 |
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56 TUint Flags() const; |
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57 |
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58 TBool GetScreenOrigin(TPoint& aOrigin) const; |
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59 |
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60 TSize Size() const; |
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61 |
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62 void SetSizeL(const TSize& aSize); |
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63 |
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64 virtual void MakeCurrent(); |
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65 |
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66 virtual void SwapBuffers(); |
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67 |
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68 virtual void BindTexture(TInt aTextureUnit, |
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69 const MHuiSegmentedTexture& aTexture, |
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70 TInt aSegment); |
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71 |
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72 /** |
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73 * Handles change in surface visibility. This method is called if surface is either |
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74 * hidden or shown. This default implementation ignores visibility events. |
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75 * |
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76 * @param aIsVisible ETrue if surface becomes visible. EFalse if surface is hidden. |
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77 */ |
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78 virtual void HandleVisibilityEvent(TBool aIsVisible); |
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79 |
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80 virtual void Release(); |
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81 |
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82 virtual void RestoreL(); |
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83 |
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84 virtual void HandleDisplayUsageChangeL(); |
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85 |
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86 // These methods are not really used, since opengles renderer doesn't |
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87 // support dirty region handling or symbian graphics context! |
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88 virtual void SetDirtyRect(const TRect& aRect); |
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89 virtual MHuiTargetBitmap* BackBuffer(); |
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90 virtual CFbsBitGc* Gc(); |
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91 |
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92 /** |
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93 * Provides expandability, helps keeping the binary compatibility. Since virtual |
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94 * table is now exported and this class is dll derivable and the implementation |
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95 * is more difficult to change, hence this method, which can provide additional |
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96 * extension APIs. |
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97 * |
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98 * @param aExtensionUid UID, which is being used for recognizing the extension |
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99 * @param aExtensionParams Return pointer to the extension API, once recognized from the extension uid |
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100 */ |
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101 virtual void RenderSurfaceExtension(const TUid& aExtensionUid, TAny** aExtensionParams); |
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102 |
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103 /** |
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104 * Static method for returning verbose error message strings according to the given |
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105 * EGL error value. This can be used to create meaningful error messages in |
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106 * HUIToolkit environments that use OpenVG rendering. |
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107 * |
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108 * @param aErrorCode EGL Error code retrieved by eglGetError - method. |
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109 * @return Verbose error message as a TDesC reference object. |
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110 */ |
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111 static const TDesC& EglErrorMessage(TInt aErrorCode); |
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112 |
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113 // Implementation of MHuiSessionObject |
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114 |
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115 /** |
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116 * Gets the object type. |
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117 */ |
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118 TType Type() const; |
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119 |
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120 /** |
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121 * Gets the session id for object. |
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122 */ |
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123 TInt SessionId() const; |
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124 |
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125 /** |
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126 * Sets the session id for object. |
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127 */ |
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128 void SetSessionId(TInt aSessionId); |
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129 |
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130 /** |
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131 * @return the currently bound texture image. |
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132 */ |
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133 const MHuiSegmentedTexture* BoundTexture() const; |
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134 |
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135 protected: |
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136 |
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137 /* Constructors. */ |
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138 |
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139 CHuiVg10RenderSurface(CHuiDisplay& aDisplay); |
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140 |
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141 void ConstructL(); |
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142 |
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143 /** |
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144 * Determines the display to which this rendering surface is attached. |
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145 * |
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146 * @return Display. |
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147 */ |
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148 CHuiDisplay& Display() const; |
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149 |
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150 /** |
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151 * Determine config for the owner display. |
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152 */ |
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153 EGLConfig DetermineConfig(); |
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154 |
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155 /** |
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156 * Create an EGL rendering surface. |
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157 */ |
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158 EGLSurface CreateSurface(EGLConfig aConfig); |
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159 |
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160 |
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161 protected: |
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162 |
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163 /** Display that owns the surface. */ |
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164 CHuiDisplay* iDisplay; |
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165 |
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166 /** The display. */ |
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167 EGLDisplay iEglDisplay; |
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168 |
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169 /** The rendering context. */ |
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170 EGLContext iEglContext; |
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171 |
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172 /** The window where the graphics are drawn. */ |
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173 EGLSurface iEglSurface; |
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174 |
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175 /** Size of the rendering surface. */ |
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176 TSize iSize; |
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177 |
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178 /** The currently bound texture */ |
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179 const MHuiSegmentedTexture* iBoundTexture; |
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180 |
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181 private: |
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182 /** Session id */ |
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183 TInt iSessionId; |
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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 #endif // __HUIVG10RENDERSURFACE_H__ |