Initial version rendering 2D path for O3D. This will eventually allow O3D app...

core/cross/cairo/renderer_cairo.h

Index: core/cross/cairo/renderer_cairo.h
===================================================================
--- core/cross/cairo/renderer_cairo.h	(revision 57528)
+++ core/cross/cairo/renderer_cairo.h	(working copy)
@@ -42,6 +42,8 @@
 
 namespace o3d {
 
+class Image2D;
+
 class RendererCairo : public Renderer {
  public:
   static RendererCairo* CreateDefault(ServiceLocator* service_locator);
@@ -60,13 +62,15 @@
   // Released all hardware resources.
   virtual void Destroy();
 
-  // set the image surface used to render images to the main surface.
-  void SetNewFrame(const void* src_data, unsigned src_width,
-                   unsigned src_height, int src_pitch);
-
   // Paint the frame to the main view
   void Paint();
 
+  // Insert the given Image2D to the back of the array.
+  void AddImage2D(Image2D* image);
+
+  // Remove the given Image2D from the array.
+  void RemoveImage2D(Image2D* image);
+
   // Handles the plugin resize event.
   virtual void Resize(int width, int height);
 
@@ -138,9 +142,15 @@
   // current platform.
   virtual const int* GetRGBAUByteNSwizzleTable();
 
+  // Overriden from Renderer
   void PushRenderStates(State* state);
 
+  // Overrider from Renderer
+  void PopRenderStates();
+
  protected:
+  typedef std::vector<Image2D*> Image2DRefArray;
+
   // Keep the constructor protected so only factory methods can create
   // renderers.
   explicit RendererCairo(ServiceLocator* service_locator);
@@ -205,6 +215,14 @@
                                    float min_z,
                                    float max_z);
 
+  // Mask the are of image_2d_array[index] that will collide with other images.
+  // It assumes the image_2d_array has sorted images as index 0 with
+  // is the most front image.
+  virtual void MaskArea(cairo_t* cr, int index);
+
+  // Paint the background with black color.
+  virtual void PaintBackGround(cairo_t* cr);
+
   // Linux Client Display
   Display* display_;
   // Linux Client Window
@@ -213,14 +231,11 @@
   // Main surface to render cairo
   cairo_surface_t* main_surface_;
 
-  // Current Frame Data Source
-  const void* frame_src_data_;
-  // Current Frame Source Width
-  unsigned frame_src_width_;
-  // Current Frame Source Height
-  unsigned frame_src_height_;
-  // Current Frame Source Pitch
-  int frame_src_pitch_;
+  // Draw the background
+  cairo_t* bg_drawing_;
+
+  // Array of Image2d
+  Image2DRefArray image_2d_array_;
 };
 
 }  // namespace o3d