null.hpp

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00001 /* $Id: null.hpp 18907 2010-01-23 22:37:14Z alberth $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD 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, version 2.
00006  * OpenTTD 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.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #ifndef BLITTER_NULL_HPP
00013 #define BLITTER_NULL_HPP
00014 
00015 #include "base.hpp"
00016 #include "factory.hpp"
00017 
00018 class Blitter_Null : public Blitter {
00019 public:
00020   /* virtual */ uint8 GetScreenDepth() { return 0; }
00021   /* virtual */ void Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) {};
00022   /* virtual */ void DrawColourMappingRect(void *dst, int width, int height, PaletteID pal) {};
00023   /* virtual */ Sprite *Encode(SpriteLoader::Sprite *sprite, Blitter::AllocatorProc *allocator);
00024   /* virtual */ void *MoveTo(const void *video, int x, int y) { return NULL; };
00025   /* virtual */ void SetPixel(void *video, int x, int y, uint8 colour) {};
00026   /* virtual */ void DrawRect(void *video, int width, int height, uint8 colour) {};
00027   /* virtual */ void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour) {};
00028   /* virtual */ void CopyFromBuffer(void *video, const void *src, int width, int height) {};
00029   /* virtual */ void CopyToBuffer(const void *video, void *dst, int width, int height) {};
00030   /* virtual */ void CopyImageToBuffer(const void *video, void *dst, int width, int height, int dst_pitch) {};
00031   /* virtual */ void ScrollBuffer(void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y) {};
00032   /* virtual */ int BufferSize(int width, int height) { return 0; };
00033   /* virtual */ void PaletteAnimate(uint start, uint count) { };
00034   /* virtual */ Blitter::PaletteAnimation UsePaletteAnimation() { return Blitter::PALETTE_ANIMATION_NONE; };
00035 
00036   /* virtual */ const char *GetName() { return "null"; }
00037   /* virtual */ int GetBytesPerPixel() { return 0; }
00038 };
00039 
00040 class FBlitter_Null: public BlitterFactory<FBlitter_Null> {
00041 public:
00042   /* virtual */ const char *GetName() { return "null"; }
00043   /* virtual */ const char *GetDescription() { return "Null Blitter (does nothing)"; }
00044   /* virtual */ Blitter *CreateInstance() { return new Blitter_Null(); }
00045 };
00046 
00047 #endif /* BLITTER_NULL_HPP */

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