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x11: check if window size/position has changed during SDL_ShowWindow.

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Fixes #4216.

(cherry picked from commit 49b5cfa6c5cb9bb8cecce508e12fa7f8e0cc302f)
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Ryan C. Gordon 2023-06-07 15:42:22 -04:00
parent 14f4fd3f11
commit aa536217b3
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GPG key ID: FA148B892AB48044
1 changed files with 27 additions and 0 deletions
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27
src/video/x11/SDL_x11window.c
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@ -1180,6 +1180,33 @@ void X11_ShowWindow(_THIS, SDL_Window *window)
if (data->border_left == 0 && data->border_right == 0 && data->border_top == 0 && data->border_bottom == 0) { if (data->border_left == 0 && data->border_right == 0 && data->border_top == 0 && data->border_bottom == 0) {
X11_GetBorderValues(data); X11_GetBorderValues(data);
} }
/* Check if the window manager moved us somewhere unexpected, just in case. */
{
int (*prev_handler)(Display *, XErrorEvent *) = NULL;
Window childReturn, root, parent;
Window *children;
unsigned int childCount;
XWindowAttributes attrs;
int x, y;
X11_XSync(display, False);
prev_handler = X11_XSetErrorHandler(X11_CatchAnyError);
caught_x11_error = SDL_FALSE;
X11_XQueryTree(display, data->xwindow, &root, &parent, &children, &childCount);
X11_XGetWindowAttributes(display, data->xwindow, &attrs);
X11_XTranslateCoordinates(display, parent, DefaultRootWindow(display),
attrs.x, attrs.y, &x, &y, &childReturn);
if (!caught_x11_error) {
/* if these values haven't changed from our current beliefs, these don't actually generate events. */
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_MOVED, x, y);
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, attrs.width, attrs.height);
}
X11_XSetErrorHandler(prev_handler);
caught_x11_error = SDL_FALSE;
}
} }
void X11_HideWindow(_THIS, SDL_Window *window) void X11_HideWindow(_THIS, SDL_Window *window)