1 #ifndef __RICONTEXT_H |
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2 #define __RICONTEXT_H |
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3 |
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4 /*------------------------------------------------------------------------ |
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5 * |
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6 * OpenVG 1.1 Reference Implementation |
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7 * ----------------------------------- |
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8 * |
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9 * Copyright (c) 2007 The Khronos Group Inc. |
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10 * |
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11 * Permission is hereby granted, free of charge, to any person obtaining a |
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12 * copy of this software and /or associated documentation files |
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13 * (the "Materials "), to deal in the Materials without restriction, |
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14 * including without limitation the rights to use, copy, modify, merge, |
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15 * publish, distribute, sublicense, and/or sell copies of the Materials, |
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16 * and to permit persons to whom the Materials are furnished to do so, |
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17 * subject to the following conditions: |
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18 * |
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19 * The above copyright notice and this permission notice shall be included |
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20 * in all copies or substantial portions of the Materials. |
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21 * |
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22 * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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23 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
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25 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
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26 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
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27 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR |
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28 * THE USE OR OTHER DEALINGS IN THE MATERIALS. |
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29 * |
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30 *//** |
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31 * \file |
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32 * \brief VGContext class. Used for storing OpenVG state. |
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33 * \note |
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34 *//*-------------------------------------------------------------------*/ |
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35 |
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36 #ifndef OPENVG_H |
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37 #include "openvg.h" |
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38 #endif |
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39 |
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40 #ifndef __RIDEFS_H |
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41 #include "riDefs.h" |
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42 #endif |
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43 |
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44 #ifndef __RIMATH_H |
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45 #include "riMath.h" |
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46 #endif |
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47 |
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48 #ifndef __RIIMAGE_H |
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49 #include "riImage.h" |
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50 #endif |
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51 |
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52 #ifndef __RIPATH_H |
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53 #include "riPath.h" |
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54 #endif |
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55 |
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56 #ifndef __RIFONT_H |
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57 #include "riFont.h" |
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58 #endif |
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59 |
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60 #ifndef __RIARRAY_H |
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61 #include "riArray.h" |
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62 #endif |
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63 |
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64 //============================================================================================== |
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65 |
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66 namespace OpenVGRI |
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67 { |
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68 |
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69 class VGContext; |
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70 |
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71 /*-------------------------------------------------------------------*//*! |
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72 * \brief A list of resources (Images, Paths, or Paints) shared by a |
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73 * set of contexts. |
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74 * \param |
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75 * \return |
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76 * \note |
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77 *//*-------------------------------------------------------------------*/ |
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78 |
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79 template <class Resource> class ResourceManager |
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80 { |
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81 public: |
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82 ResourceManager() : |
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83 m_referenceCount(0), |
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84 m_resources() |
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85 { |
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86 } |
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87 |
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88 ~ResourceManager() |
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89 { |
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90 RI_ASSERT(m_referenceCount == 0); |
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91 RI_ASSERT(m_resources.size() == 0); |
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92 } |
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93 |
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94 void addReference() |
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95 { |
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96 m_referenceCount++; |
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97 } |
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98 |
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99 int removeReference() |
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100 { |
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101 m_referenceCount--; |
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102 RI_ASSERT(m_referenceCount >= 0); |
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103 return m_referenceCount; |
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104 } |
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105 |
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106 void addResource(Resource* resource, VGContext* context) |
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107 { |
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108 Entry r; |
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109 r.resource = resource; |
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110 r.context = context; |
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111 m_resources.push_back(r); //throws bad_alloc |
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112 resource->addReference(); |
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113 } |
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114 |
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115 void removeResource(Resource* resource) |
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116 { |
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117 if(!resource->removeReference()) |
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118 RI_DELETE(resource); |
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119 |
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120 int i=0; |
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121 bool found = false; |
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122 for(;i<m_resources.size();i++) |
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123 { |
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124 if(m_resources[i].resource == resource) |
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125 { |
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126 found = true; |
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127 break; |
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128 } |
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129 } |
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130 RI_ASSERT(found); |
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131 |
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132 for(;i<m_resources.size()-1;i++) |
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133 { |
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134 m_resources[i] = m_resources[i+1]; |
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135 } |
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136 m_resources.resize(m_resources.size()-1); |
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137 } |
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138 |
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139 bool isValid(Resource* resource) |
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140 { |
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141 for(int i=0;i<m_resources.size();i++) |
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142 { |
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143 if(m_resources[i].resource == resource) |
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144 return true; |
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145 } |
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146 return false; |
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147 } |
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148 |
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149 Resource* getFirstResource(VGContext* context) |
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150 { |
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151 for(int i=0;i<m_resources.size();i++) |
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152 { |
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153 if(m_resources[i].context == context) |
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154 return m_resources[i].resource; |
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155 } |
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156 return NULL; |
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157 } |
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158 |
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159 private: |
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160 ResourceManager(const ResourceManager&); |
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161 ResourceManager operator=(const ResourceManager&); |
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162 |
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163 struct Entry |
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164 { |
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165 Resource* resource; |
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166 VGContext* context; |
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167 }; |
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168 |
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169 int m_referenceCount; |
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170 Array<Entry> m_resources; |
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171 }; |
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172 |
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173 /*-------------------------------------------------------------------*//*! |
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174 * \brief |
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175 * \param |
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176 * \return |
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177 * \note |
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178 *//*-------------------------------------------------------------------*/ |
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179 |
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180 class VGContext |
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181 { |
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182 public: |
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183 VGContext(VGContext* shareContext); //throws bad_alloc |
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184 ~VGContext(); |
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185 |
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186 void setDefaultDrawable(Drawable* drawable); //called from EGL |
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187 Drawable* getCurrentDrawable() { return m_eglDrawable; } |
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188 |
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189 bool isValidImage(VGImage image); |
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190 bool isValidPath(VGPath path); |
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191 bool isValidPaint(VGPaint paint); |
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192 bool isValidFont(VGFont font); |
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193 bool isValidMaskLayer(VGMaskLayer layer); |
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194 |
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195 void releasePaint(VGbitfield paintModes); |
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196 |
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197 void setError(VGErrorCode error) { if(m_error == VG_NO_ERROR) m_error = error; } |
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198 |
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199 // Mode settings |
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200 VGMatrixMode m_matrixMode; |
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201 VGFillRule m_fillRule; |
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202 VGImageQuality m_imageQuality; |
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203 VGRenderingQuality m_renderingQuality; |
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204 VGBlendMode m_blendMode; |
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205 VGImageMode m_imageMode; |
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206 |
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207 // Scissor rectangles |
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208 Array<Rectangle> m_scissor; |
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209 |
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210 // Stroke parameters |
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211 RIfloat m_strokeLineWidth; |
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212 RIfloat m_inputStrokeLineWidth; |
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213 VGCapStyle m_strokeCapStyle; |
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214 VGJoinStyle m_strokeJoinStyle; |
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215 RIfloat m_strokeMiterLimit; |
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216 RIfloat m_inputStrokeMiterLimit; |
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217 Array<RIfloat> m_strokeDashPattern; |
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218 Array<RIfloat> m_inputStrokeDashPattern; |
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219 RIfloat m_strokeDashPhase; |
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220 RIfloat m_inputStrokeDashPhase; |
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221 VGboolean m_strokeDashPhaseReset; |
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222 |
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223 // Edge fill color for vgConvolve and pattern paint |
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224 Color m_tileFillColor; |
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225 Color m_inputTileFillColor; |
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226 |
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227 // Color for vgClear |
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228 Color m_clearColor; |
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229 Color m_inputClearColor; |
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230 |
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231 Vector2 m_glyphOrigin; |
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232 Vector2 m_inputGlyphOrigin; |
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233 |
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234 VGboolean m_masking; |
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235 VGboolean m_scissoring; |
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236 |
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237 VGPixelLayout m_pixelLayout; |
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238 |
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239 VGboolean m_filterFormatLinear; |
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240 VGboolean m_filterFormatPremultiplied; |
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241 VGbitfield m_filterChannelMask; |
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242 |
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243 // Matrices |
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244 Matrix3x3 m_pathUserToSurface; |
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245 Matrix3x3 m_imageUserToSurface; |
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246 Matrix3x3 m_glyphUserToSurface; |
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247 Matrix3x3 m_fillPaintToUser; |
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248 Matrix3x3 m_strokePaintToUser; |
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249 |
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250 VGPaint m_fillPaint; |
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251 VGPaint m_strokePaint; |
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252 |
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253 VGboolean m_colorTransform; |
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254 RIfloat m_colorTransformValues[8]; |
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255 RIfloat m_inputColorTransformValues[8]; |
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256 |
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257 VGErrorCode m_error; |
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258 |
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259 ResourceManager<Image>* m_imageManager; |
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260 ResourceManager<Path>* m_pathManager; |
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261 ResourceManager<Paint>* m_paintManager; |
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262 ResourceManager<Font>* m_fontManager; |
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263 ResourceManager<Surface>* m_maskLayerManager; |
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264 private: |
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265 Drawable* m_eglDrawable; |
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266 |
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267 VGContext(const VGContext&); //!< Not allowed. |
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268 void operator=(const VGContext&); //!< Not allowed. |
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269 }; |
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270 |
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271 //============================================================================================== |
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272 |
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273 } //namespace OpenVGRI |
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274 |
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275 //============================================================================================== |
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276 |
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277 #endif /* __RICONTEXT_H */ |
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