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Diffstat (limited to 'src/vg/Context.h')
| -rw-r--r-- | src/vg/Context.h | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/src/vg/Context.h b/src/vg/Context.h new file mode 100644 index 0000000..05aad3a --- /dev/null +++ b/src/vg/Context.h @@ -0,0 +1,257 @@ +#ifndef __CONTEXT_H
+#define __CONTEXT_H
+
+/*------------------------------------------------------------------------
+ *
+ * OpenVG 1.1 Reference Implementation
+ * -----------------------------------
+ *
+ * Copyright (c) 2007 The Khronos Group Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and /or associated documentation files
+ * (the "Materials "), to deal in the Materials without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Materials,
+ * and to permit persons to whom the Materials are furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Materials.
+ *
+ * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR
+ * THE USE OR OTHER DEALINGS IN THE MATERIALS.
+ *
+ *//**
+ * \file
+ * \brief VGContext class. Used for storing OpenVG state.
+ * \note
+ *//*-------------------------------------------------------------------*/
+
+#include <VG/openvg.h>
+#include "Defs.h"
+#include "Math.h"
+#include "Image.h"
+#include "Path.h"
+#include "Font.h"
+#include "Array.h"
+
+//==============================================================================================
+
+namespace tgOpenVG
+{
+
+class VGContext;
+
+/*-------------------------------------------------------------------*//*!
+* \brief A list of resources (Images, Paths, or Paints) shared by a
+* set of contexts.
+* \param
+* \return
+* \note
+*//*-------------------------------------------------------------------*/
+
+template <class Resource> class ResourceManager
+{
+public:
+ ResourceManager() :
+ m_referenceCount(0),
+ m_resources()
+ {
+ }
+
+ ~ResourceManager()
+ {
+ RI_ASSERT(m_referenceCount == 0);
+ RI_ASSERT(m_resources.size() == 0);
+ }
+
+ void addReference()
+ {
+ m_referenceCount++;
+ }
+
+ int removeReference()
+ {
+ m_referenceCount--;
+ RI_ASSERT(m_referenceCount >= 0);
+ return m_referenceCount;
+ }
+
+ void addResource(Resource* resource, VGContext* context)
+ {
+ Entry r;
+ r.resource = resource;
+ r.context = context;
+ m_resources.push_back(r); //throws bad_alloc
+ resource->addReference();
+ }
+
+ void removeResource(Resource* resource)
+ {
+ if(!resource->removeReference())
+ RI_DELETE(resource);
+
+ int i=0;
+ bool found = false;
+ for(;i<m_resources.size();i++)
+ {
+ if(m_resources[i].resource == resource)
+ {
+ found = true;
+ break;
+ }
+ }
+ RI_ASSERT(found);
+
+ for(;i<m_resources.size()-1;i++)
+ {
+ m_resources[i] = m_resources[i+1];
+ }
+ m_resources.resize(m_resources.size()-1);
+ }
+
+ bool isValid(Resource* resource)
+ {
+ for(int i=0;i<m_resources.size();i++)
+ {
+ if(m_resources[i].resource == resource)
+ return true;
+ }
+ return false;
+ }
+
+ Resource* getFirstResource(VGContext* context)
+ {
+ for(int i=0;i<m_resources.size();i++)
+ {
+ if(m_resources[i].context == context)
+ return m_resources[i].resource;
+ }
+ return NULL;
+ }
+
+private:
+ ResourceManager(const ResourceManager&);
+ ResourceManager operator=(const ResourceManager&);
+
+ struct Entry
+ {
+ Resource* resource;
+ VGContext* context;
+ };
+
+ int m_referenceCount;
+ Array<Entry> m_resources;
+};
+
+/*-------------------------------------------------------------------*//*!
+* \brief
+* \param
+* \return
+* \note
+*//*-------------------------------------------------------------------*/
+
+class VGContext
+{
+public:
+ VGContext(VGContext* shareContext); //throws bad_alloc
+ ~VGContext();
+
+ void setDefaultDrawable(Drawable* drawable); //called from EGL
+ Drawable* getCurrentDrawable() { return m_eglDrawable; }
+
+ bool isValidImage(VGImage image);
+ bool isValidPath(VGPath path);
+ bool isValidPaint(VGPaint paint);
+ bool isValidFont(VGFont font);
+ bool isValidMaskLayer(VGMaskLayer layer);
+
+ void releasePaint(VGbitfield paintModes);
+
+ void setError(VGErrorCode error) { if(m_error == VG_NO_ERROR) m_error = error; }
+
+ // Mode settings
+ VGMatrixMode m_matrixMode;
+ VGFillRule m_fillRule;
+ VGImageQuality m_imageQuality;
+ VGRenderingQuality m_renderingQuality;
+ VGBlendMode m_blendMode;
+ VGImageMode m_imageMode;
+
+ // Scissor rectangles
+ Array<Rectangle> m_scissor;
+
+ // Stroke parameters
+ RIfloat m_strokeLineWidth;
+ RIfloat m_inputStrokeLineWidth;
+ VGCapStyle m_strokeCapStyle;
+ VGJoinStyle m_strokeJoinStyle;
+ RIfloat m_strokeMiterLimit;
+ RIfloat m_inputStrokeMiterLimit;
+ Array<RIfloat> m_strokeDashPattern;
+ Array<RIfloat> m_inputStrokeDashPattern;
+ RIfloat m_strokeDashPhase;
+ RIfloat m_inputStrokeDashPhase;
+ VGboolean m_strokeDashPhaseReset;
+
+ // Edge fill color for vgConvolve and pattern paint
+ Color m_tileFillColor;
+ Color m_inputTileFillColor;
+
+ // Color for vgClear
+ Color m_clearColor;
+ Color m_inputClearColor;
+
+ Vector2 m_glyphOrigin;
+ Vector2 m_inputGlyphOrigin;
+
+ VGboolean m_masking;
+ VGboolean m_scissoring;
+
+ VGPixelLayout m_pixelLayout;
+
+ VGboolean m_filterFormatLinear;
+ VGboolean m_filterFormatPremultiplied;
+ VGbitfield m_filterChannelMask;
+
+ // Matrices
+ Matrix3x3 m_pathUserToSurface;
+ Matrix3x3 m_imageUserToSurface;
+ Matrix3x3 m_glyphUserToSurface;
+ Matrix3x3 m_fillPaintToUser;
+ Matrix3x3 m_strokePaintToUser;
+
+ VGPaint m_fillPaint;
+ VGPaint m_strokePaint;
+
+ VGboolean m_colorTransform;
+ RIfloat m_colorTransformValues[8];
+ RIfloat m_inputColorTransformValues[8];
+
+ VGErrorCode m_error;
+
+ ResourceManager<Image>* m_imageManager;
+ ResourceManager<Path>* m_pathManager;
+ ResourceManager<Paint>* m_paintManager;
+ ResourceManager<Font>* m_fontManager;
+ ResourceManager<Surface>* m_maskLayerManager;
+private:
+ Drawable* m_eglDrawable;
+
+ VGContext(const VGContext&); //!< Not allowed.
+ void operator=(const VGContext&); //!< Not allowed.
+};
+
+//==============================================================================================
+
+} //namespace tgOpenVG
+
+//==============================================================================================
+
+#endif /* __CONTEXT_H */
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