src/blitter/null.hpp

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * 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.
   6  * 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.
   7  * 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/>.
   8  */
   9
  10 /** @file null.hpp The blitter that doesn't blit. */
  11
  12 #ifndef BLITTER_NULL_HPP
  13 #define BLITTER_NULL_HPP
  14
  15 #include "factory.hpp"
  16
  17 /** Blitter that does nothing. */
  18 class Blitter_Null : public Blitter {
  19 public:
  20         /* virtual */ uint8 GetScreenDepth() { return 0; }
  21         /* virtual */ void Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) {};
  22         /* virtual */ void DrawColourMappingRect(void *dst, int width, int height, PaletteID pal) {};
  23         /* virtual */ Sprite *Encode(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator);
  24         /* virtual */ void *MoveTo(void *video, int x, int y) { return NULL; };
  25         /* virtual */ void SetPixel(void *video, int x, int y, uint8 colour) {};
  26         /* virtual */ void DrawRect(void *video, int width, int height, uint8 colour) {};
  27         /* virtual */ void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour, int width, int dash) {};
  28         /* virtual */ void CopyFromBuffer(void *video, const void *src, int width, int height) {};
  29         /* virtual */ void CopyToBuffer(const void *video, void *dst, int width, int height) {};
  30         /* virtual */ void CopyImageToBuffer(const void *video, void *dst, int width, int height, int dst_pitch) {};
  31         /* virtual */ void ScrollBuffer(void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y) {};
  32         /* virtual */ int BufferSize(int width, int height) { return 0; };
  33         /* virtual */ void PaletteAnimate(const Palette &palette) { };
  34         /* virtual */ Blitter::PaletteAnimation UsePaletteAnimation() { return Blitter::PALETTE_ANIMATION_NONE; };
  35
  36         /* virtual */ const char *GetName() { return "null"; }
  37         /* virtual */ int GetBytesPerPixel() { return 0; }
  38 };
  39
  40 /** Factory for the blitter that does nothing. */
  41 class FBlitter_Null : public BlitterFactory {
  42 public:
  43         FBlitter_Null() : BlitterFactory("null", "Null Blitter (does nothing)") {}
  44         /* virtual */ Blitter *CreateInstance() { return new Blitter_Null(); }
  45 };
  46
  47 #endif /* BLITTER_NULL_HPP */