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Issue #10120: CRITICAL in gimp_progress_bar_init().

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This hightlighted a slightly more complicated use case when setting the handle
on a widget without its own GdkWindow.
This commit is contained in:
Jehan
2023-10-05 16:40:16 +02:00
parent 3d827148c9
commit 192c043d7b
1 changed files with 41 additions and 7 deletions
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48
libgimpwidgets/gimpwidgetsutils.c
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@ -77,6 +77,8 @@ static void gimp_widget_wayland_window_exported (GdkWindow *window,
GBytes **phandle);
#endif
static void gimp_widget_set_handle_on_realize (GtkWidget *widget,
GBytes **phandle);
static gboolean gimp_widget_set_handle_on_mapped (GtkWidget *widget,
GdkEventAny *event,
GBytes **phandle);
@ -1073,21 +1075,38 @@ gimp_widget_get_color_transform (GtkWidget *widget,
* this function.
*
* This convenience function is safe to use even before @widget is
* visible as it will will the handle once it is mapped.
* visible as it will set the handle once it is mapped.
*/
void
gimp_widget_set_native_handle (GtkWidget *widget,
GBytes **handle)
{
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (gtk_widget_get_has_window (widget));
g_return_if_fail (handle != NULL && *handle == NULL);
gtk_widget_add_events (widget, GDK_STRUCTURE_MASK);
g_signal_connect (widget, "map-event",
G_CALLBACK (gimp_widget_set_handle_on_mapped),
handle);
/* This may seem overly complicated but there is a reason: "map-event" can
* only be received by widgets with their own windows (see description of
* gtk_widget_set_events()). Instead we could just use "realize" which is
* received by every widgets (even by the ones whose window actually belongs
* to a parent widget), but this causes process locks on Wayland (see comment
* in gimp_widget_set_handle_on_mapped()).
* This is why we do this weird case-based dance.
*/
if (gtk_widget_get_has_window (widget))
{
gtk_widget_add_events (widget, GDK_STRUCTURE_MASK);
g_signal_connect (widget, "map-event",
G_CALLBACK (gimp_widget_set_handle_on_mapped),
handle);
}
else
{
g_signal_connect (widget, "realize",
G_CALLBACK (gimp_widget_set_handle_on_realize),
handle);
}
if (gtk_widget_get_mapped (widget))
if (gtk_widget_get_realized (widget))
gimp_widget_set_handle_on_mapped (widget, NULL, handle);
}
@ -1109,6 +1128,21 @@ gimp_widget_wayland_window_exported (GdkWindow *window,
}
#endif
static void
gimp_widget_set_handle_on_realize (GtkWidget *widget,
GBytes **phandle)
{
GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
gtk_widget_add_events (toplevel, GDK_STRUCTURE_MASK);
g_signal_connect (toplevel, "map-event",
G_CALLBACK (gimp_widget_set_handle_on_mapped),
phandle);
if (gtk_widget_get_mapped (toplevel))
gimp_widget_set_handle_on_mapped (widget, NULL, phandle);
}
static gboolean
gimp_widget_set_handle_on_mapped (GtkWidget *widget,
GdkEventAny *event,