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!GTK_OBJECT_DESTROYED() -> GTK_WIDGET_REALIZE() for resize queueing.

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Thu Jun 28 23:53:31 2001  Tim Janik  <timj@gtk.org>

        * gtk/gtkwidget.c (gtk_widget_hide): !GTK_OBJECT_DESTROYED() ->
        GTK_WIDGET_REALIZE() for resize queueing.

        * gtk/gtkmain.c (gtk_main_do_event): !GTK_OBJECT_DESTROYED() ->
        GTK_WIDGET_REALIZE() for post event delivery destruction upon
        GDK_DESTROY.

        * gtk/gtkwidget.c: added GtkWidget::event-after notification signal, to
        sompensate for former (pre-2.0) connect_after() facility.
        (gtk_widget_send_expose):
        (gtk_widget_event): assert the widget is realized, since event delivery
        to non-realized widgets is essentially a bug. event handlers should
        be able to unconditionally rely on widget->window (unless they
        emit events on their own which can trigger widget destruction).
        (gtk_widget_event_internal): removed old outdated GTK_OBJECT_DESTROYED()
        logic. event delivery happens as follows:
        a) emission of GtkWidget::event (RUN_LAST handler). returns was_handled.
        b) if !was_handled in (a) and the widget is still realized, emit event-
           specific signal (RUN_LAST handler). returns was_handled.
        c) emission of GtkWidget::event-after for notification if the widget is
           still realized (regardless of was_handled from previous stages, no
           class handler). no return value.
        d) was_handled gets passed on to caller, to determine further
           propagation. if the widget got unrealized meanwhile, was_handled
           is returned as TRUE.

        * gdk/gdkevents.[hc]: added gdk_event_get_root_coords() and
        gdk_event_get_coords().
This commit is contained in:
Tim Janik
2001-06-28 22:49:20 +00:00
committed by Tim Janik
parent 10f047cf4c
commit 00f85bf815
11 changed files with 455 additions and 109 deletions
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119
gdk/gdkevents.c
View File

@ -559,6 +559,125 @@ gdk_event_get_state (GdkEvent *event,
return FALSE;
}
/**
* gdk_event_get_coords:
* @event: a #GdkEvent
* @x_root: location to put event window x coordinate
* @y_root: location to put event window y coordinate
*
* Extract the event window relative x/y coordinates from an event.
*
* Return value: %TRUE if the event delivered event window coordinates
**/
gboolean
gdk_event_get_coords (GdkEvent *event,
gdouble *x_win,
gdouble *y_win)
{
gdouble x = 0, y = 0;
gboolean fetched = TRUE;
g_return_val_if_fail (event != NULL, FALSE);
switch (event->type)
{
case GDK_CONFIGURE:
x = event->configure.x;
y = event->configure.y;
break;
case GDK_ENTER_NOTIFY:
case GDK_LEAVE_NOTIFY:
x = event->crossing.x;
y = event->crossing.y;
break;
case GDK_SCROLL:
x = event->scroll.x;
y = event->scroll.y;
break;
case GDK_BUTTON_PRESS:
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
case GDK_BUTTON_RELEASE:
x = event->button.x;
y = event->button.y;
break;
case GDK_MOTION_NOTIFY:
x = event->motion.x;
y = event->motion.y;
break;
default:
fetched = FALSE;
break;
}
if (x_win)
*x_win = x;
if (y_win)
*y_win = x;
return fetched;
}
/**
* gdk_event_get_root_coords:
* @event: a #GdkEvent
* @x_root: location to put root window x coordinate
* @y_root: location to put root window y coordinate
*
* Extract the root window relative x/y coordinates from an event.
*
* Return value: %TRUE if the event delivered root window coordinates
**/
gboolean
gdk_event_get_root_coords (GdkEvent *event,
gdouble *x_root,
gdouble *y_root)
{
gdouble x = 0, y = 0;
gboolean fetched = TRUE;
g_return_val_if_fail (event != NULL, FALSE);
switch (event->type)
{
case GDK_MOTION_NOTIFY:
x = event->motion.x_root;
y = event->motion.y_root;
break;
case GDK_BUTTON_PRESS:
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
case GDK_BUTTON_RELEASE:
x = event->button.x_root;
y = event->button.y_root;
break;
case GDK_ENTER_NOTIFY:
case GDK_LEAVE_NOTIFY:
x = event->crossing.x_root;
y = event->crossing.y_root;
break;
case GDK_DRAG_ENTER:
case GDK_DRAG_LEAVE:
case GDK_DRAG_MOTION:
case GDK_DRAG_STATUS:
case GDK_DROP_START:
case GDK_DROP_FINISHED:
x = event->dnd.x_root;
y = event->dnd.y_root;
break;
default:
fetched = FALSE;
break;
}
if (x_root)
*x_root = x;
if (y_root)
*y_root = x;
return fetched;
}
/**
* gdk_event_get_axis:
* @event: a #GdkEvent