x11_graphics.hpp

video linux conference

/*****************************************************************************
 * x11_graphics.hpp
 *****************************************************************************
 * Copyright (C) 2003 VideoLAN
 * $Id: x11_graphics.hpp 10861 2005-05-01 13:19:04Z asmax $
 *
 * Authors: Cyril Deguet     <[e-mail]>
 *          Olivier Teuli鑢e <[e-mail]>
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

#ifndef X11_GRAPHICS_HPP
#define X11_GRAPHICS_HPP

#include <X11/Xlib.h>
#include <X11/Xutil.h>

#include "../src/os_graphics.hpp"

class X11Display;
class GenericWindow;
class GenericBitmap;

/// X11 implementation of OSGraphics
class X11Graphics: public OSGraphics
{
    public:
        X11Graphics( intf_thread_t *pIntf, X11Display &rDisplay, int width,
                     int height);

        virtual ~X11Graphics();

        /// Clear the graphics
        virtual void clear();

        /// Draw another graphics on this one
        virtual void drawGraphics( const OSGraphics &rGraphics, int xSrc = 0,
                                   int ySrc = 0, int xDest = 0, int yDest = 0,
                                   int width = -1, int height = -1 );

        /// Render a bitmap on this graphics
        virtual void drawBitmap( const GenericBitmap &rBitmap, int xSrc = 0,
                                 int ySrc = 0, int xDest = 0, int yDest = 0,
                                 int width = -1, int height = -1,
                                 bool blend = false );

        /// Draw a filled rectangle on the grahics (color is #RRGGBB)
        virtual void fillRect( int left, int top, int width, int height,
                               uint32_t color );

        /// Draw an empty rectangle on the grahics (color is #RRGGBB)
        virtual void drawRect( int left, int top, int width, int height,
                               uint32_t color );

        /// Set the shape of a window with the mask of this graphics.
        virtual void applyMaskToWindow( OSWindow &rWindow );

        /// Copy the graphics on a window
        virtual void copyToWindow( OSWindow &rWindow, int xSrc,
                                   int ySrc, int width, int height,
                                   int xDest, int yDest );

        /// Tell whether the pixel at the given position is visible
        virtual bool hit( int x, int y ) const;

        /// Getters
        virtual int getWidth() const { return m_width; }
        virtual int getHeight() const { return m_height; }

        /// Get the pixmap ID
        Pixmap getDrawable() const { return m_pixmap; }
        /// Get the transparency mask
        Region getMask() const { return m_mask; }

    private:
        /// X11 display
        X11Display &m_rDisplay;
        /// Size of the image
        int m_width, m_height;
        /// Pixmap
        Pixmap m_pixmap;
        /// Transparency mask
        Region m_mask;
        /// Graphics context
        GC m_gc;

        /// Add an horizontal segment in a region
        void X11Graphics::addHSegmentInRegion( Region &rMask, int xStart,
                                               int xEnd, int y );
        /// Add a vertical segment in a region
        void X11Graphics::addVSegmentInRegion( Region &rMask, int yStart,
                                               int yEnd, int x );
};


#endif