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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5131 | clevermous | 1 | |
| 2 | |||
| 3 | |||
| 4 | #include |
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| 5 | #include |
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| 6 | |||
| 7 | |||
| 8 | #include "picture.xbm" |
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| 9 | |||
| 10 | |||
| 11 | { |
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| 12 | SDL_Surface *bitmap; |
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| 13 | Uint8 *line; |
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| 14 | |||
| 15 | |||
| 16 | bitmap = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 1, 0, 0, 0, 0); |
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| 17 | if ( bitmap == NULL ) { |
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| 18 | fprintf(stderr, "Couldn't allocate bitmap: %s\n", |
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| 19 | SDL_GetError()); |
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| 20 | return(NULL); |
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| 21 | } |
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| 22 | |||
| 23 | |||
| 24 | line = (Uint8 *)bitmap->pixels; |
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| 25 | w = (w+7)/8; |
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| 26 | while ( h-- ) { |
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| 27 | memcpy(line, bits, w); |
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| 28 | /* X11 Bitmap images have the bits reversed */ |
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| 29 | { int i, j; Uint8 *buf, byte; |
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| 30 | for ( buf=line, i=0; i |
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| 31 | byte = *buf; |
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| 32 | *buf = 0; |
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| 33 | for ( j=7; j>=0; --j ) { |
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| 34 | *buf |= (byte&0x01)< |
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| 35 | byte >>= 1; |
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| 36 | } |
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| 37 | } |
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| 38 | } |
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| 39 | line += bitmap->pitch; |
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| 40 | bits += w; |
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| 41 | } |
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| 42 | return(bitmap); |
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| 43 | } |
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| 44 | |||
| 45 | |||
| 46 | { |
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| 47 | SDL_Surface *screen; |
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| 48 | SDL_Surface *bitmap; |
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| 49 | Uint8 video_bpp; |
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| 50 | Uint32 videoflags; |
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| 51 | Uint8 *buffer; |
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| 52 | int i, done; |
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| 53 | SDL_Event event; |
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| 54 | |||
| 55 | |||
| 56 | if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { |
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| 57 | fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); |
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| 58 | exit(1); |
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| 59 | } |
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| 60 | atexit(SDL_Quit); |
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| 61 | |||
| 62 | |||
| 63 | videoflags = SDL_SWSURFACE; |
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| 64 | /* Set 640x480 video mode */ |
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| 65 | if ( (screen=SDL_SetVideoMode(640,480,video_bpp,videoflags)) == NULL ) { |
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| 66 | fprintf(stderr, "Couldn't set 640x480x%d video mode: %s\n", |
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| 67 | video_bpp, SDL_GetError()); |
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| 68 | exit(2); |
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| 69 | } |
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| 70 | |||
| 71 | |||
| 72 | if ( SDL_LockSurface(screen) < 0 ) { |
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| 73 | fprintf(stderr, "Couldn't lock the display surface: %s\n", |
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| 74 | SDL_GetError()); |
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| 75 | exit(2); |
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| 76 | } |
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| 77 | buffer=(Uint8 *)screen->pixels; |
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| 78 | for ( i=0; i |
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| 79 | memset(buffer,(i*255)/screen->h, screen->pitch); |
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| 80 | buffer += screen->pitch; |
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| 81 | } |
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| 82 | SDL_UnlockSurface(screen); |
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| 83 | SDL_UpdateRect(screen, 0, 0, 0, 0); |
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| 84 | |||
| 85 | |||
| 86 | bitmap = LoadXBM(screen, picture_width, picture_height, |
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| 87 | (Uint8 *)picture_bits); |
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| 88 | if ( bitmap == NULL ) { |
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| 89 | exit(1); |
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| 90 | } |
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| 91 | |||
| 92 | |||
| 93 | done = 0; |
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| 94 | while ( !done ) { |
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| 95 | /* Check for events */ |
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| 96 | while ( SDL_PollEvent(&event) ) { |
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| 97 | switch (event.type) { |
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| 98 | case SDL_MOUSEBUTTONDOWN: { |
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| 99 | SDL_Rect dst; |
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| 100 | |||
| 101 | |||
| 102 | dst.y = event.button.y - bitmap->h/2; |
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| 103 | dst.w = bitmap->w; |
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| 104 | dst.h = bitmap->h; |
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| 105 | SDL_BlitSurface(bitmap, NULL, |
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| 106 | screen, &dst); |
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| 107 | SDL_UpdateRects(screen,1,&dst); |
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| 108 | } |
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| 109 | break; |
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| 110 | case SDL_KEYDOWN: |
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| 111 | /* Any key press quits the app... */ |
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| 112 | done = 1; |
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| 113 | break; |
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| 114 | case SDL_QUIT: |
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| 115 | done = 1; |
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| 116 | break; |
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| 117 | default: |
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| 118 | break; |
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| 119 | } |
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| 120 | } |
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| 121 | } |
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| 122 | SDL_FreeSurface(bitmap); |
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| 123 | return(0); |
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| 124 | } |
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| 125 | > |