Mercurial > sdl-ios-xcode
view src/video/SDL_blit_0.c @ 1207:c9ec00d3e8bc
To: sdl@libsdl.org
From: Christian Walther <cwalther@gmx.ch>
Date: Wed, 21 Dec 2005 13:39:39 +0100
Subject: [SDL] Another mouse bug patch for Mac OS X
Oh my, yet another change in the quartz mouse handling code! :)
The attached patch fixes the following bug:
Calling SDL_WarpMouse() while the cursor is invisible and grabbed should
only update SDL's internal mouse location, not try to warp the system
cursor (which is not at that location, but fixed in the middle of the
window). Otherwise, the next mouse motion event is wrong.
Please apply.
Thanks
Christian
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Wed, 21 Dec 2005 18:02:36 +0000 |
parents | e6c91fd1911e |
children | c9b51268668f |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif #include <stdio.h> #include <string.h> #include "SDL_types.h" #include "SDL_video.h" #include "SDL_blit.h" /* Functions to blit from bitmaps to other surfaces */ static void BlitBto1(SDL_BlitInfo *info) { int c; int width, height; Uint8 *src, *map, *dst; int srcskip, dstskip; /* Set up some basic variables */ width = info->d_width; height = info->d_height; src = info->s_pixels; srcskip = info->s_skip; dst = info->d_pixels; dstskip = info->d_skip; map = info->table; srcskip += width-(width+7)/8; if ( map ) { while ( height-- ) { Uint8 byte = 0, bit; for ( c=0; c<width; ++c ) { if ( (c&7) == 0 ) { byte = *src++; } bit = (byte&0x80)>>7; if ( 1 ) { *dst = map[bit]; } dst++; byte <<= 1; } src += srcskip; dst += dstskip; } } else { while ( height-- ) { Uint8 byte = 0, bit; for ( c=0; c<width; ++c ) { if ( (c&7) == 0 ) { byte = *src++; } bit = (byte&0x80)>>7; if ( 1 ) { *dst = bit; } dst++; byte <<= 1; } src += srcskip; dst += dstskip; } } } static void BlitBto2(SDL_BlitInfo *info) { int c; int width, height; Uint8 *src; Uint16 *map, *dst; int srcskip, dstskip; /* Set up some basic variables */ width = info->d_width; height = info->d_height; src = info->s_pixels; srcskip = info->s_skip; dst = (Uint16 *)info->d_pixels; dstskip = info->d_skip/2; map = (Uint16 *)info->table; srcskip += width-(width+7)/8; while ( height-- ) { Uint8 byte = 0, bit; for ( c=0; c<width; ++c ) { if ( (c&7) == 0 ) { byte = *src++; } bit = (byte&0x80)>>7; if ( 1 ) { *dst = map[bit]; } byte <<= 1; dst++; } src += srcskip; dst += dstskip; } } static void BlitBto3(SDL_BlitInfo *info) { int c, o; int width, height; Uint8 *src, *map, *dst; int srcskip, dstskip; /* Set up some basic variables */ width = info->d_width; height = info->d_height; src = info->s_pixels; srcskip = info->s_skip; dst = info->d_pixels; dstskip = info->d_skip; map = info->table; srcskip += width-(width+7)/8; while ( height-- ) { Uint8 byte = 0, bit; for ( c=0; c<width; ++c ) { if ( (c&7) == 0 ) { byte = *src++; } bit = (byte&0x80)>>7; if ( 1 ) { o = bit * 4; dst[0] = map[o++]; dst[1] = map[o++]; dst[2] = map[o++]; } byte <<= 1; dst += 3; } src += srcskip; dst += dstskip; } } static void BlitBto4(SDL_BlitInfo *info) { int width, height; Uint8 *src; Uint32 *map, *dst; int srcskip, dstskip; int c; /* Set up some basic variables */ width = info->d_width; height = info->d_height; src = info->s_pixels; srcskip = info->s_skip; dst = (Uint32 *)info->d_pixels; dstskip = info->d_skip/4; map = (Uint32 *)info->table; srcskip += width-(width+7)/8; while ( height-- ) { Uint8 byte = 0, bit; for ( c=0; c<width; ++c ) { if ( (c&7) == 0 ) { byte = *src++; } bit = (byte&0x80)>>7; if ( 1 ) { *dst = map[bit]; } byte <<= 1; dst++; } src += srcskip; dst += dstskip; } } static void BlitBto1Key(SDL_BlitInfo *info) { int width = info->d_width; int height = info->d_height; Uint8 *src = info->s_pixels; Uint8 *dst = info->d_pixels; int srcskip = info->s_skip; int dstskip = info->d_skip; Uint32 ckey = info->src->colorkey; Uint8 *palmap = info->table; int c; /* Set up some basic variables */ srcskip += width-(width+7)/8; if ( palmap ) { while ( height-- ) { Uint8 byte = 0, bit; for ( c=0; c<width; ++c ) { if ( (c&7) == 0 ) { byte = *src++; } bit = (byte&0x80)>>7; if ( bit != ckey ) { *dst = palmap[bit]; } dst++; byte <<= 1; } src += srcskip; dst += dstskip; } } else { while ( height-- ) { Uint8 byte = 0, bit; for ( c=0; c<width; ++c ) { if ( (c&7) == 0 ) { byte = *src++; } bit = (byte&0x80)>>7; if ( bit != ckey ) { *dst = bit; } dst++; byte <<= 1; } src += srcskip; dst += dstskip; } } } static void BlitBto2Key(SDL_BlitInfo *info) { int width = info->d_width; int height = info->d_height; Uint8 *src = info->s_pixels; Uint16 *dstp = (Uint16 *)info->d_pixels; int srcskip = info->s_skip; int dstskip = info->d_skip; Uint32 ckey = info->src->colorkey; Uint8 *palmap = info->table; int c; /* Set up some basic variables */ srcskip += width-(width+7)/8; dstskip /= 2; while ( height-- ) { Uint8 byte = 0, bit; for ( c=0; c<width; ++c ) { if ( (c&7) == 0 ) { byte = *src++; } bit = (byte&0x80)>>7; if ( bit != ckey ) { *dstp=((Uint16 *)palmap)[bit]; } byte <<= 1; dstp++; } src += srcskip; dstp += dstskip; } } static void BlitBto3Key(SDL_BlitInfo *info) { int width = info->d_width; int height = info->d_height; Uint8 *src = info->s_pixels; Uint8 *dst = info->d_pixels; int srcskip = info->s_skip; int dstskip = info->d_skip; Uint32 ckey = info->src->colorkey; Uint8 *palmap = info->table; int c; /* Set up some basic variables */ srcskip += width-(width+7)/8; while ( height-- ) { Uint8 byte = 0, bit; for ( c=0; c<width; ++c ) { if ( (c&7) == 0 ) { byte = *src++; } bit = (byte&0x80)>>7; if ( bit != ckey ) { memcpy(dst, &palmap[bit*4], 3); } byte <<= 1; dst += 3; } src += srcskip; dst += dstskip; } } static void BlitBto4Key(SDL_BlitInfo *info) { int width = info->d_width; int height = info->d_height; Uint8 *src = info->s_pixels; Uint32 *dstp = (Uint32 *)info->d_pixels; int srcskip = info->s_skip; int dstskip = info->d_skip; Uint32 ckey = info->src->colorkey; Uint8 *palmap = info->table; int c; /* Set up some basic variables */ srcskip += width-(width+7)/8; dstskip /= 4; while ( height-- ) { Uint8 byte = 0, bit; for ( c=0; c<width; ++c ) { if ( (c&7) == 0 ) { byte = *src++; } bit = (byte&0x80)>>7; if ( bit != ckey ) { *dstp=((Uint32 *)palmap)[bit]; } byte <<= 1; dstp++; } src += srcskip; dstp += dstskip; } } static void BlitBtoNAlpha(SDL_BlitInfo *info) { int width = info->d_width; int height = info->d_height; Uint8 *src = info->s_pixels; Uint8 *dst = info->d_pixels; int srcskip = info->s_skip; int dstskip = info->d_skip; const SDL_Color *srcpal = info->src->palette->colors; SDL_PixelFormat *dstfmt = info->dst; int dstbpp; int c; const int A = info->src->alpha; /* Set up some basic variables */ dstbpp = dstfmt->BytesPerPixel; srcskip += width-(width+7)/8; while ( height-- ) { Uint8 byte = 0, bit; for ( c=0; c<width; ++c ) { if ( (c&7) == 0 ) { byte = *src++; } bit = (byte&0x80)>>7; if ( 1 ) { Uint32 pixel; unsigned sR, sG, sB; unsigned dR, dG, dB; sR = srcpal[bit].r; sG = srcpal[bit].g; sB = srcpal[bit].b; DISEMBLE_RGB(dst, dstbpp, dstfmt, pixel, dR, dG, dB); ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB); ASSEMBLE_RGB(dst, dstbpp, dstfmt, dR, dG, dB); } byte <<= 1; dst += dstbpp; } src += srcskip; dst += dstskip; } } static void BlitBtoNAlphaKey(SDL_BlitInfo *info) { int width = info->d_width; int height = info->d_height; Uint8 *src = info->s_pixels; Uint8 *dst = info->d_pixels; int srcskip = info->s_skip; int dstskip = info->d_skip; SDL_PixelFormat *srcfmt = info->src; SDL_PixelFormat *dstfmt = info->dst; const SDL_Color *srcpal = srcfmt->palette->colors; int dstbpp; int c; const int A = srcfmt->alpha; Uint32 ckey = srcfmt->colorkey; /* Set up some basic variables */ dstbpp = dstfmt->BytesPerPixel; srcskip += width-(width+7)/8; while ( height-- ) { Uint8 byte = 0, bit; for ( c=0; c<width; ++c ) { if ( (c&7) == 0 ) { byte = *src++; } bit = (byte&0x80)>>7; if ( bit != ckey ) { int sR, sG, sB; int dR, dG, dB; Uint32 pixel; sR = srcpal[bit].r; sG = srcpal[bit].g; sB = srcpal[bit].b; DISEMBLE_RGB(dst, dstbpp, dstfmt, pixel, dR, dG, dB); ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB); ASSEMBLE_RGB(dst, dstbpp, dstfmt, dR, dG, dB); } byte <<= 1; dst += dstbpp; } src += srcskip; dst += dstskip; } } static SDL_loblit bitmap_blit[] = { NULL, BlitBto1, BlitBto2, BlitBto3, BlitBto4 }; static SDL_loblit colorkey_blit[] = { NULL, BlitBto1Key, BlitBto2Key, BlitBto3Key, BlitBto4Key }; SDL_loblit SDL_CalculateBlit0(SDL_Surface *surface, int blit_index) { int which; if ( surface->format->BitsPerPixel != 1 ) { /* We don't support sub 8-bit packed pixel modes */ return NULL; } if ( surface->map->dst->format->BitsPerPixel < 8 ) { which = 0; } else { which = surface->map->dst->format->BytesPerPixel; } switch(blit_index) { case 0: /* copy */ return bitmap_blit[which]; case 1: /* colorkey */ return colorkey_blit[which]; case 2: /* alpha */ return which >= 2 ? BlitBtoNAlpha : NULL; case 4: /* alpha + colorkey */ return which >= 2 ? BlitBtoNAlphaKey : NULL; } return NULL; }