sdlgraphics.h

Linux系统下的《红色警戒》游戏

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#ifndef GCN_SDLGRAPHICS_HPP
#define GCN_SDLGRAPHICS_HPP

#include <map>
#include <string>

#include "SDL.h"

#include "guichan/graphics.h"
#include "guichan/image.h"
#include "guichan/platform.h"
#include "guichan/rectangle.h"

namespace gcn
{
    /**
     * SDL implementation of the Graphics.
     */
    class GCN_EXTENSION_DECLSPEC SDLGraphics : public Graphics
    {
    public:
        
        // Needed so that drawImage(gcn::Image *, int, int) is visible.
        using Graphics::drawImage;
        
        /**
         * Constructor.
         */
        SDLGraphics();
        
        /**
         * Sets the target SDL_Surface to draw to. The target can be any
         * SDL_Surface. This funtion also pushes a clip areas corresponding to
         * the dimension of the target.
         *
         * @param target the target to draw to.
         */
        virtual void setTarget(SDL_Surface* target);

        /**
         * Gets the target SDL_Surface.
         *
         * @return the target SDL_Surface.
         */
        virtual SDL_Surface* getTarget() const;

        /**
         * Draws an SDL_Surface on the target surface. Normaly you'll
         * use drawImage, but if you want to write SDL specific code
         * this function might come in handy.
         *
         * NOTE: The clip areas will be taken into account.
         */
        virtual void drawSDLSurface(SDL_Surface* surface, SDL_Rect source,
                                    SDL_Rect destination);

        
        // Inherited from Graphics

        virtual void _beginDraw();

        virtual void _endDraw();
        
        virtual bool pushClipArea(Rectangle area);
    
        virtual void popClipArea();
    
        virtual void drawImage(const Image* image, int srcX, int srcY,
                               int dstX, int dstY, int width,
                               int height);    
    
        virtual void drawPoint(int x, int y);
    
        virtual void drawLine(int x1, int y1, int x2, int y2);
    
        virtual void drawRectangle(const Rectangle& rectangle);

        virtual void fillRectangle(const Rectangle& rectangle);

        virtual void setColor(const Color& color);

        virtual const Color& getColor();
        
    protected:
        /**
         * Draws a horizontal line.
         *
         * @param x1 the start coordinate of the line.
         * @param y the y coordinate of the line.
         * @param x2 the end coordinate of the line.
         */
        virtual void drawHLine(int x1, int y, int x2);

        /**
         * Draws a vertical line.
         *
         * @param x the x coordinate of the line.
         * @param y1 the start coordinate of the line.
         * @param y2 the end coordinate of the line.
         */
        virtual void drawVLine(int x, int y1, int y2);

        SDL_Surface* mTarget;
        Color mColor;
        bool mAlpha;        
    };  
}

#endif // end GCN_SDLGRAPHICS_HPP