Mercurial > sdl-ios-xcode
annotate test/graywin.c @ 615:7ec821f3cbd0
Date: Thu, 17 Apr 2003 23:27:34 -0400
From: Darrell Walisser
Subject: Yet another OS X cursor bug
The synopsis:
1. Call SDL_ShowCursor(0);
2. Call SDL_SetVideoMode();
3. Call SDL_GetEvent();
3. Call SDL_ShowCursor(1);
The result: Sometimes the cursor doesn't come back! Ack! Oddly enough,
it does come back when mousing over the dock or clicking in the menu
bar. But that's besides the point.
The reason why this is happening is a flaw in the handling of
activation/deactivation events. The short explanation is that the
HideCursor() and ShowCursor() calls must be balanced, but if the cursor
was initially hidden, HideCursor() was called again on the activate
event - so now the next ShowCursor() fails (as does the next, and the
next, for some reason).
So, here's the patch. All it does is keep track of the
HideCursor()/ShowCursor() calls so that they will always be balanced.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 20 Apr 2003 05:41:16 +0000 |
| parents | d3abe873e3f7 |
| children | 609543e2b3a1 |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* Simple program: Fill a colormap with gray and stripe it down the screen */ | |
| 3 | |
| 4 #include <stdio.h> | |
| 5 #include <stdlib.h> | |
| 6 #include <string.h> | |
| 7 #include <time.h> | |
| 8 | |
| 9 #include "SDL.h" | |
| 10 | |
| 11 #ifdef TEST_VGA16 /* Define this if you want to test VGA 16-color video modes */ | |
| 12 #define NUM_COLORS 16 | |
| 13 #else | |
| 14 #define NUM_COLORS 256 | |
| 15 #endif | |
| 16 | |
| 17 /* Draw a randomly sized and colored box centered about (X,Y) */ | |
|
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Date: Wed, 22 May 2002 22:30:58 +0300
Sam Lantinga <slouken@libsdl.org>
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diff
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18 void DrawBox(SDL_Surface *screen, int X, int Y, int width, int height) |
| 0 | 19 { |
| 20 static unsigned int seeded = 0; | |
| 21 SDL_Rect area; | |
| 22 Uint32 color; | |
| 23 | |
| 24 /* Seed the random number generator */ | |
| 25 if ( seeded == 0 ) { | |
| 26 srand(time(NULL)); | |
| 27 seeded = 1; | |
| 28 } | |
| 29 | |
| 30 /* Get the bounds of the rectangle */ | |
|
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Date: Wed, 22 May 2002 22:30:58 +0300
Sam Lantinga <slouken@libsdl.org>
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diff
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31 area.w = (rand()%width); |
|
bce7171e7a85
Date: Wed, 22 May 2002 22:30:58 +0300
Sam Lantinga <slouken@libsdl.org>
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diff
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32 area.h = (rand()%height); |
| 0 | 33 area.x = X-(area.w/2); |
| 34 area.y = Y-(area.h/2); | |
| 35 color = (rand()%NUM_COLORS); | |
| 36 | |
| 37 /* Do it! */ | |
| 38 SDL_FillRect(screen, &area, color); | |
|
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39 if ( screen->flags & SDL_DOUBLEBUF ) { |
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40 SDL_Flip(screen); |
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41 } else { |
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42 SDL_UpdateRects(screen, 1, &area); |
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43 } |
| 0 | 44 } |
| 45 | |
| 46 SDL_Surface *CreateScreen(Uint16 w, Uint16 h, Uint8 bpp, Uint32 flags) | |
| 47 { | |
| 48 SDL_Surface *screen; | |
| 49 int i; | |
| 50 SDL_Color palette[NUM_COLORS]; | |
| 51 Uint8 *buffer; | |
| 52 | |
| 53 /* Set the video mode */ | |
| 54 screen = SDL_SetVideoMode(w, h, bpp, flags); | |
| 55 if ( screen == NULL ) { | |
| 56 fprintf(stderr, "Couldn't set display mode: %s\n", | |
| 57 SDL_GetError()); | |
| 58 return(NULL); | |
| 59 } | |
| 60 fprintf(stderr, "Screen is in %s mode\n", | |
| 61 (screen->flags & SDL_FULLSCREEN) ? "fullscreen" : "windowed"); | |
| 62 | |
| 63 /* Set a gray colormap, reverse order from white to black */ | |
| 64 for ( i=0; i<NUM_COLORS; ++i ) { | |
| 65 palette[i].r = (NUM_COLORS-1)-i * (256 / NUM_COLORS); | |
| 66 palette[i].g = (NUM_COLORS-1)-i * (256 / NUM_COLORS); | |
| 67 palette[i].b = (NUM_COLORS-1)-i * (256 / NUM_COLORS); | |
| 68 } | |
| 69 SDL_SetColors(screen, palette, 0, NUM_COLORS); | |
| 70 | |
| 71 /* Set the surface pixels and refresh! */ | |
|
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parents:
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72 /* Use two loops in case the surface is double-buffered (both sides) */ |
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73 for ( i=0; i<2; ++i ) { |
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74 if ( SDL_LockSurface(screen) < 0 ) { |
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75 fprintf(stderr, "Couldn't lock display surface: %s\n", |
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76 SDL_GetError()); |
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77 return(NULL); |
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78 } |
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parents:
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79 buffer = (Uint8 *)screen->pixels; |
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parents:
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80 for ( i=0; i<screen->h; ++i ) { |
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Sam Lantinga <slouken@libsdl.org>
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81 memset(buffer,(i*(NUM_COLORS-1))/screen->h, screen->w * screen->format->BytesPerPixel); |
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parents:
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82 buffer += screen->pitch; |
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83 } |
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parents:
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84 SDL_UnlockSurface(screen); |
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Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
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85 if ( screen->flags & SDL_DOUBLEBUF ) { |
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d3abe873e3f7
Added support for testing video flipping with graywin.c
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
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86 SDL_Flip(screen); |
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parents:
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87 } else { |
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d3abe873e3f7
Added support for testing video flipping with graywin.c
Sam Lantinga <slouken@libsdl.org>
parents:
380
diff
changeset
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88 SDL_UpdateRect(screen, 0, 0, 0, 0); |
|
d3abe873e3f7
Added support for testing video flipping with graywin.c
Sam Lantinga <slouken@libsdl.org>
parents:
380
diff
changeset
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89 } |
| 0 | 90 } |
| 91 | |
| 92 return(screen); | |
| 93 } | |
| 94 | |
| 95 int main(int argc, char *argv[]) | |
| 96 { | |
| 97 SDL_Surface *screen; | |
| 98 Uint32 videoflags; | |
| 99 int done; | |
| 100 SDL_Event event; | |
| 101 int width, height, bpp; | |
| 102 | |
| 103 /* Initialize SDL */ | |
| 104 if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { | |
| 105 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); | |
| 106 exit(1); | |
| 107 } | |
| 108 | |
| 109 /* See if we try to get a hardware colormap */ | |
| 110 width = 640; | |
| 111 height = 480; | |
| 112 bpp = 8; | |
| 113 videoflags = SDL_SWSURFACE; | |
| 114 while ( argc > 1 ) { | |
| 115 --argc; | |
| 116 if ( argv[argc-1] && (strcmp(argv[argc-1], "-width") == 0) ) { | |
| 117 width = atoi(argv[argc]); | |
| 118 --argc; | |
| 119 } else | |
| 120 if ( argv[argc-1] && (strcmp(argv[argc-1], "-height") == 0) ) { | |
| 121 height = atoi(argv[argc]); | |
| 122 --argc; | |
| 123 } else | |
| 124 if ( argv[argc-1] && (strcmp(argv[argc-1], "-bpp") == 0) ) { | |
| 125 bpp = atoi(argv[argc]); | |
| 126 --argc; | |
| 127 } else | |
| 128 if ( argv[argc] && (strcmp(argv[argc], "-hw") == 0) ) { | |
| 129 videoflags |= SDL_HWSURFACE; | |
| 130 } else | |
| 131 if ( argv[argc] && (strcmp(argv[argc], "-hwpalette") == 0) ) { | |
| 132 videoflags |= SDL_HWPALETTE; | |
| 133 } else | |
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538
d3abe873e3f7
Added support for testing video flipping with graywin.c
Sam Lantinga <slouken@libsdl.org>
parents:
380
diff
changeset
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134 if ( argv[argc] && (strcmp(argv[argc], "-flip") == 0) ) { |
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d3abe873e3f7
Added support for testing video flipping with graywin.c
Sam Lantinga <slouken@libsdl.org>
parents:
380
diff
changeset
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135 videoflags |= SDL_DOUBLEBUF; |
|
d3abe873e3f7
Added support for testing video flipping with graywin.c
Sam Lantinga <slouken@libsdl.org>
parents:
380
diff
changeset
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136 } else |
| 0 | 137 if ( argv[argc] && (strcmp(argv[argc], "-noframe") == 0) ) { |
| 138 videoflags |= SDL_NOFRAME; | |
| 139 } else | |
| 140 if ( argv[argc] && (strcmp(argv[argc], "-fullscreen") == 0) ) { | |
| 141 videoflags |= SDL_FULLSCREEN; | |
| 142 } else { | |
|
538
d3abe873e3f7
Added support for testing video flipping with graywin.c
Sam Lantinga <slouken@libsdl.org>
parents:
380
diff
changeset
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143 fprintf(stderr, "Usage: %s [-width] [-height] [-bpp] [-hw] [-hwpalette] [-flip] [-noframe] [-fullscreen]\n", |
| 0 | 144 argv[0]); |
| 145 exit(1); | |
| 146 } | |
| 147 } | |
| 148 | |
| 149 /* Set a video mode */ | |
| 150 screen = CreateScreen(width, height, bpp, videoflags); | |
| 151 if ( screen == NULL ) { | |
| 152 exit(2); | |
| 153 } | |
| 154 | |
| 155 /* Wait for a keystroke */ | |
| 156 done = 0; | |
| 157 while ( !done && SDL_WaitEvent(&event) ) { | |
| 158 switch (event.type) { | |
| 159 case SDL_MOUSEBUTTONDOWN: | |
|
380
bce7171e7a85
Date: Wed, 22 May 2002 22:30:58 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
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160 DrawBox(screen, event.button.x, event.button.y, width, height); |
| 0 | 161 break; |
| 162 case SDL_KEYDOWN: | |
| 163 /* Ignore ALT-TAB for windows */ | |
| 164 if ( (event.key.keysym.sym == SDLK_LALT) || | |
| 165 (event.key.keysym.sym == SDLK_TAB) ) { | |
| 166 break; | |
| 167 } | |
| 168 /* Center the mouse on <SPACE> */ | |
| 169 if ( event.key.keysym.sym == SDLK_SPACE ) { | |
|
380
bce7171e7a85
Date: Wed, 22 May 2002 22:30:58 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
170 SDL_WarpMouse(width/2, height/2); |
| 0 | 171 break; |
| 172 } | |
| 173 /* Toggle fullscreen mode on <RETURN> */ | |
| 174 if ( event.key.keysym.sym == SDLK_RETURN ) { | |
| 175 videoflags ^= SDL_FULLSCREEN; | |
| 176 screen = CreateScreen( | |
| 177 screen->w, screen->h, | |
| 178 screen->format->BitsPerPixel, | |
| 179 videoflags); | |
| 180 if ( screen == NULL ) { | |
| 181 fprintf(stderr, | |
| 182 "Couldn't toggle fullscreen mode\n"); | |
| 183 done = 1; | |
| 184 } | |
| 185 break; | |
| 186 } | |
| 187 /* Any other key quits the application... */ | |
| 188 case SDL_QUIT: | |
| 189 done = 1; | |
| 190 break; | |
| 191 default: | |
| 192 break; | |
| 193 } | |
| 194 } | |
| 195 SDL_Quit(); | |
| 196 return(0); | |
| 197 } |