GPC_Canvas.h

Go to the documentation of this file.

/*
 * $Id: GPC_Canvas.h 35063 2011-02-22 10:33:14Z jesterking $
 *
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#ifndef _GPC_CANVAS_H_
#define _GPC_CANVAS_H_

#include "RAS_ICanvas.h"
#include "RAS_Rect.h"

#ifdef WIN32
        #pragma warning (disable:4786) // suppress stl-MSVC debug info warning
        #include <windows.h>
#endif // WIN32

#include "GL/glew.h"

#include <map>


class GPC_Canvas : public RAS_ICanvas
{
public:
        typedef enum {
                alignTopLeft,
                alignBottomRight
        } TBannerAlignment;

        typedef int TBannerId;

protected:
        typedef struct {
                TBannerAlignment alignment;
                bool enabled;
                unsigned int displayWidth;
                unsigned int displayHeight;
                unsigned int imageWidth;
                unsigned int imageHeight;
                unsigned char* imageData;
                unsigned int textureName;
        } TBannerData;
        typedef std::map<TBannerId, TBannerData> TBannerMap;

        int m_width;
        int m_height;
        RAS_Rect m_displayarea;

        TBannerMap m_banners;
        bool m_bannersEnabled;

public:

        GPC_Canvas(int width, int height);

        virtual ~GPC_Canvas();

        void Resize(int width, int height);


                int 
        GetWidth(
        ) const {
                return m_width;
        }
        
                int 
        GetHeight(
        ) const {
                return m_height;
        }

        const 
                RAS_Rect &
        GetDisplayArea(
        ) const {
                return m_displayarea;
        };

                void
        SetDisplayArea(
                RAS_Rect *rect
        ) {
                m_displayarea= *rect;
        };
        
                RAS_Rect &
        GetWindowArea(
        ) {
                return m_displayarea;
        }

                void 
        BeginFrame(
        ) {};

                void 
        EndFrame(
        );
        
        void SetViewPort(int x1, int y1, int x2, int y2);

        void ClearColor(float r, float g, float b, float a);

        void SetMouseState(RAS_MouseState mousestate)
        {
                // not yet              
        }

        void SetMousePosition(int x, int y)
        {
                // not yet
        }

        virtual void MakeScreenShot(const char* filename);

        void ClearBuffer(int type);

        TBannerId AddBanner(
                unsigned int bannerWidth, unsigned int bannerHeight,
                unsigned int imageWidth, unsigned int imageHeight,
                unsigned char* imageData, TBannerAlignment alignment = alignTopLeft, 
                bool enabled = true);

        void DisposeBanner(TBannerId id);

        void DisposeAllBanners();

        void SetBannerEnabled(TBannerId id, bool enabled = true);

        void SetBannerDisplayEnabled(bool enabled = true);

protected:
        void DisposeBanner(TBannerData& banner);

        void DrawAllBanners(void);

        void DrawBanner(TBannerData& banner);

        struct CanvasRenderState {
                int oldLighting;
                int oldDepthTest;
                int oldFog;
                int oldTexture2D;
                int oldBlend;
                int oldBlendSrc;
                int oldBlendDst;
                float oldColor[4];
                int oldWriteMask;
        };

                void                    
        PushRenderState(
                CanvasRenderState & render_state
        );
                void
        PopRenderState(
                const CanvasRenderState & render_state
        );

                void
        SetOrthoProjection(
        );
        
        static TBannerId s_bannerId;
};

#endif // _GPC_CANVAS_H_