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x11: Ignore border extents when the border hint is unset

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Old extent events can arrive after the border hint has been unset. Ignore the reported values in this case to avoid reporting bogus border sizes.
This commit is contained in:
Frank Praznik
2023-12-22 12:17:06 -05:00
parent 07e9603398
commit 199f7cc3b1
2 changed files with 20 additions and 19 deletions
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33
src/video/x11/SDL_x11events.c
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@@ -884,18 +884,24 @@ void X11_GetBorderValues(SDL_WindowData *data)
int format;
unsigned long nitems, bytes_after;
unsigned char *property;
if (X11_XGetWindowProperty(display, data->xwindow, videodata->_NET_FRAME_EXTENTS, 0, 16, 0, XA_CARDINAL, &type, &format, &nitems, &bytes_after, &property) == Success) {
if (type != None && nitems == 4) {
data->border_left = (int)((long *)property)[0];
data->border_right = (int)((long *)property)[1];
data->border_top = (int)((long *)property)[2];
data->border_bottom = (int)((long *)property)[3];
}
X11_XFree(property);
/* Some compositors will send extents even when the border hint is turned off. Ignore them in this case. */
if (!(data->window->flags & SDL_WINDOW_BORDERLESS)) {
if (X11_XGetWindowProperty(display, data->xwindow, videodata->_NET_FRAME_EXTENTS, 0, 16, 0, XA_CARDINAL, &type, &format, &nitems, &bytes_after, &property) == Success) {
if (type != None && nitems == 4) {
data->border_left = (int)((long *)property)[0];
data->border_right = (int)((long *)property)[1];
data->border_top = (int)((long *)property)[2];
data->border_bottom = (int)((long *)property)[3];
}
X11_XFree(property);
#ifdef DEBUG_XEVENTS
printf("New _NET_FRAME_EXTENTS: left=%d right=%d, top=%d, bottom=%d\n", data->border_left, data->border_right, data->border_top, data->border_bottom);
printf("New _NET_FRAME_EXTENTS: left=%d right=%d, top=%d, bottom=%d\n", data->border_left, data->border_right, data->border_top, data->border_bottom);
#endif
}
} else {
data->border_left = data->border_top = data->border_right = data->border_bottom = 0;
}
}
@@ -1745,11 +1751,10 @@ static void X11_DispatchEvent(SDL_VideoDevice *_this, XEvent *xevent)
X11_XMoveWindow(display, data->xwindow, data->window->floating.x - data->border_left, data->window->floating.y - data->border_top);
X11_XResizeWindow(display, data->xwindow, data->window->floating.w, data->window->floating.h);
}
if (!(data->window->flags & SDL_WINDOW_FULLSCREEN) && data->toggle_borders) {
data->toggle_borders = SDL_FALSE;
X11_SetWindowBordered(_this, data->window, !(data->window->flags & SDL_WINDOW_BORDERLESS));
}
}
if (!(data->window->flags & SDL_WINDOW_FULLSCREEN) && data->toggle_borders) {
data->toggle_borders = SDL_FALSE;
X11_SetWindowBordered(_this, data->window, !(data->window->flags & SDL_WINDOW_BORDERLESS));
}
}
} break;

6
src/video/x11/SDL_x11window.c
View File

@@ -1233,11 +1233,7 @@ void X11_SetWindowBordered(SDL_VideoDevice *_this, SDL_Window *window, SDL_bool
X11_XCheckIfEvent(display, &event, &isMapNotify, (XPointer)&data->xwindow);
/* Turning the borders off doesn't send an extent event, so they must be cleared here. */
if (bordered) {
X11_GetBorderValues(data);
} else {
data->border_top = data->border_left = data->border_bottom = data->border_right = 0;
}
X11_GetBorderValues(data);
/* Make sure the window manager didn't resize our window for the difference. */
X11_XResizeWindow(display, data->xwindow, window->floating.w, window->floating.h);