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Added support for undefined or centered position for shaped windows

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Fixes https://github.com/libsdl-org/SDL/issues/6359
This commit is contained in:
Sam Lantinga 2022-10-10 09:26:49 -07:00
parent b737833d3c
commit 680d0f043a
1 changed files with 40 additions and 6 deletions
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44
src/video/SDL_shape.c
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@ -257,20 +257,54 @@ SDL_FreeShapeTree(SDL_ShapeTree** shape_tree)
int
SDL_SetWindowShape(SDL_Window *window,SDL_Surface *shape,SDL_WindowShapeMode *shape_mode)
{
SDL_VideoDevice *_this = SDL_GetVideoDevice();
int result;
if(window == NULL || !SDL_IsShapedWindow(window))
if (window == NULL || !SDL_IsShapedWindow(window)) {
/* The window given was not a shapeable window. */
return SDL_NONSHAPEABLE_WINDOW;
if(shape == NULL)
}
if (shape == NULL) {
/* Invalid shape argument. */
return SDL_INVALID_SHAPE_ARGUMENT;
}
if(shape_mode != NULL)
if (shape_mode != NULL) {
window->shaper->mode = *shape_mode;
result = SDL_GetVideoDevice()->shape_driver.SetWindowShape(window->shaper,shape,shape_mode);
}
result = _this->shape_driver.SetWindowShape(window->shaper, shape, shape_mode);
window->shaper->hasshape = SDL_TRUE;
if (window->shaper->userx != 0 && window->shaper->usery != 0) {
SDL_SetWindowPosition(window,window->shaper->userx,window->shaper->usery);
int x = window->shaper->userx;
int y = window->shaper->usery;
if (SDL_WINDOWPOS_ISUNDEFINED(x) || SDL_WINDOWPOS_ISUNDEFINED(y) ||
SDL_WINDOWPOS_ISCENTERED(x) || SDL_WINDOWPOS_ISCENTERED(y)) {
int displayIndex;
SDL_Rect bounds;
if (SDL_WINDOWPOS_ISUNDEFINED(x) || SDL_WINDOWPOS_ISCENTERED(x)) {
displayIndex = (x & 0xFFFF);
if (displayIndex >= _this->num_displays) {
displayIndex = 0;
}
} else if (SDL_WINDOWPOS_ISUNDEFINED(y) || SDL_WINDOWPOS_ISCENTERED(y)) {
displayIndex = (y & 0xFFFF);
if (displayIndex >= _this->num_displays) {
displayIndex = 0;
}
return displayIndex;
}
SDL_GetDisplayBounds(displayIndex, &bounds);
if (SDL_WINDOWPOS_ISUNDEFINED(x) || SDL_WINDOWPOS_ISCENTERED(x)) {
window->x = bounds.x + (bounds.w - window->w) / 2;
}
if (SDL_WINDOWPOS_ISUNDEFINED(y) || SDL_WINDOWPOS_ISCENTERED(y)) {
window->y = bounds.y + (bounds.h - window->h) / 2;
}
}
SDL_SetWindowPosition(window, x, y);
window->shaper->userx = 0;
window->shaper->usery = 0;
}