src/blitter/32bpp_anim.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 32bpp_anim.hpp A 32 bpp blitter with animation support. */
  11
  12 #ifndef BLITTER_32BPP_ANIM_HPP
  13 #define BLITTER_32BPP_ANIM_HPP
  14
  15 #include "32bpp_optimized.hpp"
  16
  17 /** The optimised 32 bpp blitter with palette animation. */
  18 class Blitter_32bppAnim : public Blitter_32bppOptimized {
  19 protected:
  20         uint16 *anim_buf;    ///< In this buffer we keep track of the 8bpp indexes so we can do palette animation
  21         int anim_buf_width;  ///< The width of the animation buffer.
  22         int anim_buf_height; ///< The height of the animation buffer.
  23         int anim_buf_pitch;  ///< The pitch of the animation buffer.
  24         Palette palette;     ///< The current palette.
  25
  26 public:
  27         Blitter_32bppAnim() :
  28                 anim_buf(NULL),
  29                 anim_buf_width(0),
  30                 anim_buf_height(0),
  31                 anim_buf_pitch(0)
  32         {
  33                 this->palette = _cur_palette;
  34         }
  35
  36         ~Blitter_32bppAnim();
  37
  38         /* virtual */ void Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom);
  39         /* virtual */ void DrawColourMappingRect(void *dst, int width, int height, PaletteID pal);
  40         /* virtual */ void SetPixel(void *video, int x, int y, uint8 colour);
  41         /* 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);
  42         /* virtual */ void SetLine(void *video, int x, int y, uint8 *colours, uint width);
  43         /* virtual */ void SetLine32(void *video, int x, int y, uint32 *colours, uint width);
  44         /* virtual */ void DrawRect(void *video, int width, int height, uint8 colour);
  45         /* virtual */ void CopyFromBuffer(void *video, const void *src, int width, int height);
  46         /* virtual */ void CopyToBuffer(const void *video, void *dst, int width, int height);
  47         /* virtual */ void ScrollBuffer(void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y);
  48         /* virtual */ int BufferSize(int width, int height);
  49         /* virtual */ void PaletteAnimate(const Palette &palette);
  50         /* virtual */ Blitter::PaletteAnimation UsePaletteAnimation();
  51
  52         /* virtual */ const char *GetName() { return "32bpp-anim"; }
  53         /* virtual */ int GetBytesPerPixel() { return 6; }
  54         /* virtual */ void PostResize();
  55
  56         /**
  57          * Look up the colour in the current palette.
  58          */
  59         inline Colour LookupColourInPalette(uint index)
  60         {
  61                 return this->palette.palette[index];
  62         }
  63
  64         inline int ScreenToAnimOffset(const uint32 *video)
  65         {
  66                 int raw_offset = video - (const uint32 *)_screen.dst_ptr;
  67                 if (_screen.pitch == this->anim_buf_pitch) return raw_offset;
  68                 int lines = raw_offset / _screen.pitch;
  69                 int across = raw_offset % _screen.pitch;
  70                 return across + (lines * this->anim_buf_pitch);
  71         }
  72
  73         template <BlitterMode mode, bool no_anim_translucent> void Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom);
  74 };
  75
  76 /** Factory for the 32bpp blitter with animation. */
  77 class FBlitter_32bppAnim : public BlitterFactory {
  78 public:
  79         FBlitter_32bppAnim() : BlitterFactory("32bpp-anim", "32bpp Animation Blitter (palette animation)") {}
  80         /* virtual */ Blitter *CreateInstance() { return new Blitter_32bppAnim(); }
  81 };
  82
  83 #endif /* BLITTER_32BPP_ANIM_HPP */