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x11: Set the pending window position immediately after mapping

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Waiting until the first configure event to perform the move can result in the window visibly jumping in position.
This commit is contained in:
Frank Praznik
2025-02-17 13:46:14 -05:00
parent 1fd626939f
commit a7f01cd73c
1 changed files with 19 additions and 4 deletions
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23
src/video/x11/SDL_x11window.c
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@@ -1444,12 +1444,16 @@ void X11_ShowWindow(SDL_VideoDevice *_this, SDL_Window *window)
SDL_WindowData *data = window->internal;
Display *display = data->videodata->display;
bool bActivate = SDL_GetHintBoolean(SDL_HINT_WINDOW_ACTIVATE_WHEN_SHOWN, true);
bool position_is_absolute = false;
XEvent event;
if (SDL_WINDOW_IS_POPUP(window)) {
// Update the position in case the parent moved while we were hidden
X11_ConstrainPopup(window, true);
X11_UpdateWindowPosition(window, false);
data->pending_position = true;
// Coordinates after X11_ConstrainPopup() are already in the global space.
position_is_absolute = true;
}
/* Whether XMapRaised focuses the window is based on the window type and it is
@@ -1458,6 +1462,20 @@ void X11_ShowWindow(SDL_VideoDevice *_this, SDL_Window *window)
if (!X11_IsWindowMapped(_this, window)) {
X11_XMapRaised(display, data->xwindow);
if (data->pending_position) {
int x, y;
if (position_is_absolute) {
x = window->pending.x;
y = window->pending.y;
} else {
SDL_RelativeToGlobalForWindow(window,
window->pending.x, window->pending.y,
&x, &y);
}
data->pending_position = false;
X11_XMoveWindow(display, data->xwindow, x, y);
}
/* Blocking wait for "MapNotify" event.
* We use X11_XIfEvent because pXWindowEvent takes a mask rather than a type,
* and XCheckTypedWindowEvent doesn't block */
@@ -1484,9 +1502,6 @@ void X11_ShowWindow(SDL_VideoDevice *_this, SDL_Window *window)
X11_GetBorderValues(data);
}
// Apply the pending position, if any, after the window is mapped.
data->pending_position = window->last_position_pending;
/* Some window managers can send garbage coordinates while mapping the window, so don't emit size and position
* events during the initial configure events.
*/