Mercurial > sdl-ios-xcode
view test/testbitmap.c @ 1013:a649064a3215
Date: Tue, 14 Dec 2004 12:08:30 +0100
From: Marcin Konicki
Subject: Re: [SDL] SDL 1.2.8 Prerelease
I'm sending small fix for BeOS, which prevents filling up SDL's message
queue too fast.
Without it, SDL receives "key down" messages from BeOS code, for each key
repeat (BeOS handles key repeats itself, and application can check if
received "key down" message from BeOS is first time key down, or if it's
repeat, and which repeat it is). Since there is no way for "sdl driver" to
turn off "default" SDL's key-repeat mechanism, they were working both at
the same time (and queue could be filled up very fast).
So this patch removes handling "key down" message from BeOS if it's
key_repeat "type".
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 14 Dec 2004 18:23:27 +0000 |
parents | 609543e2b3a1 |
children | be9c9c8f6d53 |
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/* Simple program: Test bitmap blits */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include "SDL.h" #include "picture.xbm" SDL_Surface *LoadXBM(SDL_Surface *screen, int w, int h, Uint8 *bits) { SDL_Surface *bitmap; Uint8 *line; /* Allocate the bitmap */ bitmap = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 1, 0, 0, 0, 0); if ( bitmap == NULL ) { fprintf(stderr, "Couldn't allocate bitmap: %s\n", SDL_GetError()); return(NULL); } /* Copy the pixels */ line = (Uint8 *)bitmap->pixels; w = (w+7)/8; while ( h-- ) { memcpy(line, bits, w); /* X11 Bitmap images have the bits reversed */ { int i, j; Uint8 *buf, byte; for ( buf=line, i=0; i<w; ++i, ++buf ) { byte = *buf; *buf = 0; for ( j=7; j>=0; --j ) { *buf |= (byte&0x01)<<j; byte >>= 1; } } } line += bitmap->pitch; bits += w; } return(bitmap); } int main(int argc, char *argv[]) { SDL_Surface *screen; SDL_Surface *bitmap; Uint8 video_bpp; Uint32 videoflags; Uint8 *buffer; int i, k, done; SDL_Event event; Uint16 *buffer16; Uint16 color; Uint8 gradient; SDL_Color palette[256]; /* Initialize SDL */ if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); exit(1); } atexit(SDL_Quit); video_bpp = 0; videoflags = SDL_SWSURFACE; while ( argc > 1 ) { --argc; if ( strcmp(argv[argc-1], "-bpp") == 0 ) { video_bpp = atoi(argv[argc]); --argc; } else if ( strcmp(argv[argc], "-warp") == 0 ) { videoflags |= SDL_HWPALETTE; } else if ( strcmp(argv[argc], "-hw") == 0 ) { videoflags |= SDL_HWSURFACE; } else if ( strcmp(argv[argc], "-fullscreen") == 0 ) { videoflags |= SDL_FULLSCREEN; } else { fprintf(stderr, "Usage: %s [-bpp N] [-warp] [-hw] [-fullscreen]\n", argv[0]); exit(1); } } /* Set 640x480 video mode */ if ( (screen=SDL_SetVideoMode(640,480,video_bpp,videoflags)) == NULL ) { fprintf(stderr, "Couldn't set 640x480x%d video mode: %s\n", video_bpp, SDL_GetError()); exit(2); } if (video_bpp==8) { /* Set a gray colormap, reverse order from white to black */ for ( i=0; i<256; ++i ) { palette[i].r = 255-i; palette[i].g = 255-i; palette[i].b = 255-i; } SDL_SetColors(screen, palette, 0, 256); } /* Set the surface pixels and refresh! */ if ( SDL_LockSurface(screen) < 0 ) { fprintf(stderr, "Couldn't lock the display surface: %s\n", SDL_GetError()); exit(2); } buffer=(Uint8 *)screen->pixels; if (screen->format->BytesPerPixel!=2) { for ( i=0; i<screen->h; ++i ) { memset(buffer,(i*255)/screen->h, screen->pitch); buffer += screen->pitch; } } else { for ( i=0; i<screen->h; ++i ) { gradient=((i*255)/screen->h); color = SDL_MapRGB(screen->format, gradient, gradient, gradient); buffer16=(Uint16*)buffer; for (k=0; k<screen->w; k++) { *(buffer16+k)=color; } buffer += screen->pitch; } } SDL_UnlockSurface(screen); SDL_UpdateRect(screen, 0, 0, 0, 0); /* Load the bitmap */ bitmap = LoadXBM(screen, picture_width, picture_height, (Uint8 *)picture_bits); if ( bitmap == NULL ) { exit(1); } /* Wait for a keystroke */ done = 0; while ( !done ) { /* Check for events */ while ( SDL_PollEvent(&event) ) { switch (event.type) { case SDL_MOUSEBUTTONDOWN: { SDL_Rect dst; dst.x = event.button.x - bitmap->w/2; dst.y = event.button.y - bitmap->h/2; dst.w = bitmap->w; dst.h = bitmap->h; SDL_BlitSurface(bitmap, NULL, screen, &dst); SDL_UpdateRects(screen,1,&dst); } break; case SDL_KEYDOWN: /* Any key press quits the app... */ done = 1; break; case SDL_QUIT: done = 1; break; default: break; } } } SDL_FreeSurface(bitmap); return(0); }