x11: fixed incorrect SDL_GetWindowPosition() after resize (thanks, Jason!).
Fixes Bugzilla #3272.
diff --git a/src/video/x11/SDL_x11events.c b/src/video/x11/SDL_x11events.c
index 51f2915..dd0287e 100644
--- a/src/video/x11/SDL_x11events.c
+++ b/src/video/x11/SDL_x11events.c
@@ -842,6 +842,20 @@
xevent.xconfigure.x, xevent.xconfigure.y,
xevent.xconfigure.width, xevent.xconfigure.height);
#endif
+ /* Real configure notify events are relative to the parent, synthetic events are absolute. */
+ if (!xevent.xconfigure.send_event) {
+ unsigned int NumChildren;
+ Window ChildReturn, Root, Parent;
+ Window * Children;
+ /* Translate these coodinates back to relative to root */
+ X11_XQueryTree(data->videodata->display, xevent.xconfigure.window, &Root, &Parent, &Children, &NumChildren);
+ X11_XTranslateCoordinates(xevent.xconfigure.display,
+ Parent, DefaultRootWindow(xevent.xconfigure.display),
+ xevent.xconfigure.x, xevent.xconfigure.y,
+ &xevent.xconfigure.x, &xevent.xconfigure.y,
+ &ChildReturn);
+ }
+
if (xevent.xconfigure.x != data->last_xconfigure.x ||
xevent.xconfigure.y != data->last_xconfigure.y) {
SDL_SendWindowEvent(data->window, SDL_WINDOWEVENT_MOVED,
diff --git a/src/video/x11/SDL_x11sym.h b/src/video/x11/SDL_x11sym.h
index 5e76fe2..30af3f2 100644
--- a/src/video/x11/SDL_x11sym.h
+++ b/src/video/x11/SDL_x11sym.h
@@ -161,6 +161,7 @@
SDL_X11_SYM(SDL_X11_XESetWireToEventRetType,XESetWireToEvent,(Display* a,int b,SDL_X11_XESetWireToEventRetType c),(a,b,c),return)
SDL_X11_SYM(SDL_X11_XESetEventToWireRetType,XESetEventToWire,(Display* a,int b,SDL_X11_XESetEventToWireRetType c),(a,b,c),return)
SDL_X11_SYM(void,XRefreshKeyboardMapping,(XMappingEvent *a),(a),)
+SDL_X11_SYM(int,XQueryTree,(Display* a,Window b,Window* c,Window* d,Window** e,unsigned int* f),(a,b,c,d,e,f),return)
#if SDL_VIDEO_DRIVER_X11_SUPPORTS_GENERIC_EVENTS
SDL_X11_SYM(Bool,XGetEventData,(Display* a,XGenericEventCookie* b),(a,b),return)
