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Okay, _now_ SDL_WM_ToggleFullScreen() works on all platforms. :)

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This commit is contained in:
Sam Lantinga 2011-02-16 01:26:39 -08:00
parent 1738e5f49d
commit 3c7c3d8d8b
1 changed files with 94 additions and 0 deletions
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94
src/SDL_compat.c
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@ -834,6 +834,32 @@ SDL_WM_IconifyWindow(void)
int
SDL_WM_ToggleFullScreen(SDL_Surface * surface)
{
int length;
void *pixels;
Uint8 *src, *dst;
int row;
int window_w;
int window_h;
if (!SDL_PublicSurface) {
SDL_SetError("SDL_SetVideoMode() hasn't been called");
return 0;
}
/* Copy the old bits out */
length = SDL_VideoSurface->w * SDL_VideoSurface->format->BytesPerPixel;
pixels = SDL_malloc(SDL_VideoSurface->h * length);
if (pixels) {
src = (Uint8*)SDL_VideoSurface->pixels;
dst = (Uint8*)pixels;
for (row = 0; row < SDL_VideoSurface->h; ++row) {
SDL_memcpy(dst, src, length);
src += SDL_VideoSurface->pitch;
dst += length;
}
}
/* Do the physical mode switch */
if (SDL_GetWindowFlags(SDL_VideoWindow) & SDL_WINDOW_FULLSCREEN) {
if (SDL_SetWindowFullscreen(SDL_VideoWindow, 0) < 0) {
return 0;
@ -845,6 +871,74 @@ SDL_WM_ToggleFullScreen(SDL_Surface * surface)
}
SDL_PublicSurface->flags |= SDL_FULLSCREEN;
}
/* Recreate the screen surface */
SDL_WindowSurface = SDL_GetWindowSurface(SDL_VideoWindow);
if (!SDL_WindowSurface) {
/* We're totally hosed... */
return 0;
}
/* Center the public surface in the window surface */
SDL_GetWindowSize(SDL_VideoWindow, &window_w, &window_h);
SDL_VideoViewport.x = (window_w - SDL_VideoSurface->w)/2;
SDL_VideoViewport.y = (window_h - SDL_VideoSurface->h)/2;
SDL_VideoViewport.w = SDL_VideoSurface->w;
SDL_VideoViewport.h = SDL_VideoSurface->h;
/* Do some shuffling behind the application's back if format changes */
if (SDL_VideoSurface->format->format != SDL_WindowSurface->format->format) {
if (SDL_ShadowSurface) {
if (SDL_ShadowSurface->format->format == SDL_WindowSurface->format->format) {
/* Whee! We don't need a shadow surface anymore! */
SDL_VideoSurface->flags &= ~SDL_DONTFREE;
SDL_FreeSurface(SDL_VideoSurface);
SDL_free(SDL_ShadowSurface->pixels);
SDL_ShadowSurface->flags |= SDL_PREALLOC;
SDL_VideoSurface = SDL_ShadowSurface;
SDL_ShadowSurface = NULL;
} else {
/* No problem, just change the video surface format */
SDL_FreeFormat(SDL_VideoSurface->format);
SDL_VideoSurface->format = SDL_WindowSurface->format;
SDL_VideoSurface->format->refcount++;
SDL_InvalidateMap(SDL_ShadowSurface->map);
}
} else {
/* We can make the video surface the shadow surface */
SDL_ShadowSurface = SDL_VideoSurface;
SDL_VideoSurface = SDL_CreateRGBSurfaceFrom(NULL, 0, 0, 32, 0, 0, 0, 0, 0);
SDL_VideoSurface->flags = SDL_ShadowSurface->flags;
SDL_FreeFormat(SDL_VideoSurface->format);
SDL_VideoSurface->format = SDL_WindowSurface->format;
SDL_VideoSurface->format->refcount++;
SDL_VideoSurface->w = SDL_ShadowSurface->w;
SDL_VideoSurface->h = SDL_ShadowSurface->h;
}
}
/* Update the video surface */
SDL_VideoSurface->pitch = SDL_WindowSurface->pitch;
SDL_VideoSurface->pixels = (void *)((Uint8 *)SDL_WindowSurface->pixels +
SDL_VideoViewport.y * SDL_VideoSurface->pitch +
SDL_VideoViewport.x * SDL_VideoSurface->format->BytesPerPixel);
SDL_SetClipRect(SDL_VideoSurface, NULL);
/* Copy the old bits back */
if (pixels) {
src = (Uint8*)pixels;
dst = (Uint8*)SDL_VideoSurface->pixels;
for (row = 0; row < SDL_VideoSurface->h; ++row) {
SDL_memcpy(dst, src, length);
src += length;
dst += SDL_VideoSurface->pitch;
}
SDL_Flip(SDL_VideoSurface);
SDL_free(pixels);
}
/* We're done! */
return 1;
}