ui/gtk: use widget size for cursor motion event

The gd_motion_event size has some calculations for the cursor position,
which also take into account things like different size of the
framebuffer compared to the window size.
The use of window size makes things more difficult though, as at least
in the case of Wayland includes the size of ui elements like a menu bar
at the top of the window. This leads to a wrong position calculation by
a few pixels.
Fix it by using the size of the widget, which already returns the size
of the actual space to render the framebuffer.

Signed-off-by: Erico Nunes <ernunes@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20230320160856.364319-1-ernunes@redhat.com>
(cherry picked from commit 2f31663ed4b5631b5e1c79f5cdd6463e55410eb8)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

diff --git a/ui/gtk.c b/ui/gtk.c
index dfaf6d33c3b88aa4971a79c630ff035935841bc6..e681e8c319566f35de4ceac07be1211008128534 100644 (file)
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -868,7 +868,6 @@ static gboolean gd_motion_event(GtkWidget *widget, GdkEventMotion *motion,
 {
     VirtualConsole *vc = opaque;
     GtkDisplayState *s = vc->s;
-    GdkWindow *window;
     int x, y;
     int mx, my;
     int fbh, fbw;
@@ -881,10 +880,9 @@ static gboolean gd_motion_event(GtkWidget *widget, GdkEventMotion *motion,
     fbw = surface_width(vc->gfx.ds) * vc->gfx.scale_x;
     fbh = surface_height(vc->gfx.ds) * vc->gfx.scale_y;
 
-    window = gtk_widget_get_window(vc->gfx.drawing_area);
-    ww = gdk_window_get_width(window);
-    wh = gdk_window_get_height(window);
-    ws = gdk_window_get_scale_factor(window);
+    ww = gtk_widget_get_allocated_width(widget);
+    wh = gtk_widget_get_allocated_height(widget);
+    ws = gtk_widget_get_scale_factor(widget);
 
     mx = my = 0;
     if (ww > fbw) {