SO3EmbeddedWebNavigatorRenderHandler.h

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/*
-----------------------------------------------------------------------------
This source file is part of OpenSpace3D
For the latest info, see http://www.openspace3d.com
 
Copyright (c) 2011 I-maginer
 
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
 
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
 
You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt
-----------------------------------------------------------------------------
*/
 
#ifndef _SCOL_EMBEDDED_WEB_NAVIGATOR_RENDER_HANDLER_
#define _SCOL_EMBEDDED_WEB_NAVIGATOR_RENDER_HANDLER_
 
#include <thread>
#include <shared_mutex>
#include "SO3EmbeddedWebNavigatorHandler.h"
#if SO3_WEB_NAVIGATOR_BUILD == 1
#include "include/cef_render_handler.h"
#include "include/cef_task.h"
//#include "cef.h"
 
namespace SO3
{
  namespace EmbeddedWebNavigator
  {
 
class WebNavigatorRenderHandler : public CefRenderHandler,
                                  public WebNavigatorHandler
{
public:
protected:
private:
  std::shared_mutex offscreenBufferCriticalSection;
  bool isOffscreen;
  unsigned char* offscreenBuffer;
  size_t offscreenBufferMemorySize;
  unsigned char* offscreenPopupBuffer;
        CefRect offscreenPopupRect;
  unsigned int offscreenBuffer_width;
  unsigned int offscreenBuffer_height;
  bool bufferContentChanged;
 
public:
  WebNavigatorRenderHandler(CefRefPtr<WebNavigatorClient>& parentWebNavigatorClientInstance, const ScolWindowHandle& scolMainWindow, bool offscreen);
 
  ~WebNavigatorRenderHandler();
 
  unsigned char* GetOffscreenBuffer();
 
  unsigned char* GetOffscreenPopupBuffer();
 
  CefRect GetOffscreenPopupBufferRect();
 
  unsigned int GetOffscreenBufferWidth();
 
  unsigned int GetOffscreenBufferHeight();
 
  bool GetOffscreenBufferContentChanged();
 
  bool BlitOffscreenBitmap(unsigned char* dest, int destWidth, int destHeight, int destBytesPerPixel, int destBitsPerLine);
 
  bool BlitOffscreenAlphaBitmap(unsigned char* destColor, unsigned char* destAlpha, int destWidth, int destHeight, int destColorBytesPerPixel, int destColorBitsPerLine);
 
  bool BlitOffscreenTexture(Ogre::TexturePtr& ogreTexture, bool forceUpdate);
 
  bool CheckPixelAlpha(int posX, int posY, float transparentTresholdColor);
 
  virtual bool GetViewRect(CefRefPtr<CefBrowser> browser, CefRect& rect);
 
  virtual void OnPopupShow(CefRefPtr<CefBrowser> browser, bool show) OVERRIDE;
 
  virtual void OnPopupSize(CefRefPtr<CefBrowser> browser, const CefRect& rect) OVERRIDE;
 
  virtual void OnPaint(CefRefPtr<CefBrowser> browser, CefRenderHandler::PaintElementType type, const CefRenderHandler::RectList& dirtyRects, const void* buffer, int width, int height) OVERRIDE;
 
  virtual void OnCursorChange(CefRefPtr<CefBrowser> browser, CefCursorHandle cursor, CursorType type, const CefCursorInfo& custom_cursor_info) OVERRIDE;
 
  virtual void _Cleanup();
protected:
  //Include the default reference counting implementation.
  IMPLEMENT_REFCOUNTING(WebNavigatorRenderHandler);
 
  // Include the default locking implementation.
  IMPLEMENT_LOCKING(WebNavigatorRenderHandler);
private:
  WebNavigatorRenderHandler();
 
  void SetRGB(CefRefPtr<CefBrowser> browser, int width, int height, const void* src, const RectList& dirtyRects);
 
  void SetBufferSize(int width, int height);
 
  void ConvertToRGBA(const unsigned char* src, unsigned char* dst, const RectList& dirtyRects, int renderSizeWidth, int renderSizeHeight);
};
 
  }
}
 
#endif
#endif