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/*******************************************************************************
* disp_sdl.h
*
* Written by Christoph Hormann <chris_hormann@gmx.de>
*
* SDL (Simple direct media layer) based render display system
*
* ---------------------------------------------------------------------------
* Persistence of Vision Ray Tracer ('POV-Ray') version 3.7.
* Copyright 1991-2013 Persistence of Vision Raytracer Pty. Ltd.
*
* POV-Ray is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* POV-Ray 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* ---------------------------------------------------------------------------
* POV-Ray is based on the popular DKB raytracer version 2.12.
* DKBTrace was originally written by David K. Buck.
* DKBTrace Ver 2.0-2.12 were written by David K. Buck & Aaron A. Collins.
* ---------------------------------------------------------------------------
* $File: //depot/public/povray/3.x/unix/disp_sdl.h $
* $Revision: #1 $
* $Change: 6069 $
* $DateTime: 2013/11/06 11:59:40 $
* $Author: chrisc $
*******************************************************************************/
#ifdef HAVE_LIBSDL
#ifndef _DISP_SDL_H
#define _DISP_SDL_H
#include "vfe.h"
#include "unixoptions.h"
#include "disp.h"
#include <SDL/SDL.h>
namespace pov_frontend
{
using namespace vfe;
using namespace vfePlatform;
class UnixSDLDisplay : public UnixDisplay
{
public:
static const UnixOptionsProcessor::Option_Info Options[];
static bool Register(vfeUnixSession *session);
UnixSDLDisplay(unsigned int w, unsigned int h, GammaCurvePtr gamma, vfeSession *session, bool visible);
virtual ~UnixSDLDisplay();
void Initialise();
void Close();
void Show();
void Hide();
bool TakeOver(UnixDisplay *display);
void DrawPixel(unsigned int x, unsigned int y, const RGBA8& colour);
void DrawRectangleFrame(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2, const RGBA8& colour);
void DrawFilledRectangle(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2, const RGBA8& colour);
void DrawPixelBlock(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2, const RGBA8 *colour);
void Clear();
bool HandleEvents();
void UpdateScreen(bool Force);
void PauseWhenDoneNotifyStart();
bool PauseWhenDoneResumeIsRequested();
void PauseWhenDoneNotifyEnd();
protected:
/// Number of Pixels before the display is updated
static const unsigned int UpdateInterval = 100;
void SetCaption(bool paused);
/// Sets the color of a pixel in a non-scaled image.
inline void SetPixel(unsigned int x, unsigned int y, const RGBA8& colour);
/**
@brief Sets the color of a pixel in a scaled-down image.
If the pixel is already filled the color is mixed.
*/
inline void SetPixelScaled(unsigned int x, unsigned int y, const RGBA8& colour);
/// Makes a pixel coordinate part of the update rectangle
void UpdateCoord(unsigned int x, unsigned int y);
/// Makes a rectangle part of the update rectangle
void UpdateCoord(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2);
/// Makes a pixel coordinate part of the update rectangle (scaled down image version)
void UpdateCoordScaled(unsigned int x, unsigned int y);
/// Makes a rectangle part of the update rectangle (scaled down image version)
void UpdateCoordScaled(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2);
bool m_Initialized;
bool m_valid;
bool m_display_scaled;
float m_display_scale;
/// for update interval
unsigned int m_PxCnt;
SDL_Surface *m_screen;
SDL_Surface *m_display;
SDL_Rect m_screen_rect;
SDL_Rect m_update_rect;
/// for mixing colors in scaled down display
vector<unsigned char> m_PxCount;
};
}
#endif /* _DISP_SDL_H */
#endif /* HAVE_LIBSDL */
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