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ui: gtk_widget_show() the MetaFrames object

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The widget needs to be visible and mapped for GTK3 to deliver expose
events to the widget. This is achieved by making the map function a
no-op and calling gtk_widget_show() instead of just calling
gtk_widget_realize().
Apart from making GTK think the widget is drawable, the effect is the
same.

https://bugzilla.gnome.org/show_bug.cgi?id=630203
This commit is contained in:
Benjamin Otte 2010-09-21 12:31:32 +02:00
parent a3c6486e52
commit 5c3b0cda2e
2 changed files with 16 additions and 11 deletions
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22
src/ui/frames.c
View File

@ -49,8 +49,8 @@ static void meta_frames_destroy (GtkObject *object);
static void meta_frames_finalize (GObject *object);
static void meta_frames_style_set (GtkWidget *widget,
GtkStyle *prev_style);
static void meta_frames_realize (GtkWidget *widget);
static void meta_frames_unrealize (GtkWidget *widget);
static void meta_frames_map (GtkWidget *widget);
static void meta_frames_unmap (GtkWidget *widget);
static void meta_frames_update_prelit_control (MetaFrames *frames,
MetaUIFrame *frame,
@ -145,8 +145,8 @@ meta_frames_class_init (MetaFramesClass *class)
widget_class->style_set = meta_frames_style_set;
widget_class->realize = meta_frames_realize;
widget_class->unrealize = meta_frames_unrealize;
widget_class->map = meta_frames_map;
widget_class->unmap = meta_frames_unmap;
widget_class->expose_event = meta_frames_expose_event;
widget_class->destroy_event = meta_frames_destroy_event;
@ -676,17 +676,19 @@ meta_frames_unmanage_window (MetaFrames *frames,
}
static void
meta_frames_realize (GtkWidget *widget)
meta_frames_map (GtkWidget *widget)
{
if (GTK_WIDGET_CLASS (meta_frames_parent_class)->realize)
GTK_WIDGET_CLASS (meta_frames_parent_class)->realize (widget);
/* We override the parent map function to a no-op because we don't
* want to actually show the GDK window. But GTK needs to think that
* the widget is mapped or it won't deliver the events we care about.
*/
gtk_widget_set_mapped (widget, TRUE);
}
static void
meta_frames_unrealize (GtkWidget *widget)
meta_frames_unmap (GtkWidget *widget)
{
if (GTK_WIDGET_CLASS (meta_frames_parent_class)->unrealize)
GTK_WIDGET_CLASS (meta_frames_parent_class)->unrealize (widget);
gtk_widget_set_mapped (widget, FALSE);
}
static MetaUIFrame*

5
src/ui/ui.c
View File

@ -128,7 +128,10 @@ meta_ui_new (Display *xdisplay,
g_assert (xdisplay == GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()));
ui->frames = meta_frames_new (XScreenNumberOfScreen (screen));
gtk_widget_realize (GTK_WIDGET (ui->frames));
/* This does not actually show any widget. MetaFrames has been hacked so
* that showing it doesn't actually do anything. But we need the flags
* set for GTK to deliver events properly. */
gtk_widget_show (GTK_WIDGET (ui->frames));
return ui;
}