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If there is a grabbed_item, send all events to it.

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2002-04-17  Christopher James Lahey  <clahey@ximian.com>

	* gal/widgets/e-canvas.c (emit_event): If there is a grabbed_item,
	send all events to it.

svn path=/trunk/; revision=16492
This commit is contained in:
Christopher James Lahey
2002-04-17 19:38:27 +00:00
committed by Chris Lahey
parent ea772d632d
commit 822505f93b
1 changed files with 20 additions and 22 deletions
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42
widgets/misc/e-canvas.c
View File

@ -51,6 +51,8 @@ static int emit_event (GnomeCanvas *canvas, GdkEvent *event);
static GnomeCanvasClass *parent_class = NULL;
#define d(x)
enum {
REFLOW,
LAST_SIGNAL
@ -163,17 +165,6 @@ e_canvas_new ()
}
/* Returns whether the item is an inferior of or is equal to the parent. */
static int
is_descendant (GnomeCanvasItem *item, GnomeCanvasItem *parent)
{
for (; item; item = item->parent)
if (item == parent)
return TRUE;
return FALSE;
}
/* Emits an event for an item in the canvas, be it the current item, grabbed
* item, or focused item, as appropriate.
*/
@ -186,10 +177,18 @@ emit_event (GnomeCanvas *canvas, GdkEvent *event)
GnomeCanvasItem *parent;
guint mask;
/* Perform checks for grabbed items */
/* Choose where we send the event */
if (canvas->grabbed_item && !is_descendant (canvas->current_item, canvas->grabbed_item))
return FALSE;
item = canvas->current_item;
if (canvas->focused_item
&& ((event->type == GDK_KEY_PRESS) || (event->type == GDK_KEY_RELEASE) || (event->type == GDK_FOCUS_CHANGE)))
item = canvas->focused_item;
if (canvas->grabbed_item)
item = canvas->grabbed_item;
/* Perform checks for grabbed items */
if (canvas->grabbed_item) {
switch (event->type) {
@ -260,14 +259,6 @@ emit_event (GnomeCanvas *canvas, GdkEvent *event)
break;
}
/* Choose where we send the event */
item = canvas->current_item;
if (canvas->focused_item
&& ((event->type == GDK_KEY_PRESS) || (event->type == GDK_KEY_RELEASE) || (event->type == GDK_FOCUS_CHANGE)))
item = canvas->focused_item;
/* The event is propagated up the hierarchy (for if someone connected to
* a group instead of a leaf event), and emission is stopped if a
* handler returns TRUE, just like for GtkWidget events.
@ -368,6 +359,7 @@ pick_current_item (GnomeCanvas *canvas, GdkEvent *event)
| GDK_BUTTON3_MASK
| GDK_BUTTON4_MASK
| GDK_BUTTON5_MASK);
d(g_print ("%s:%d: button_down = %s\n", __FUNCTION__, __LINE__, button_down ? "TRUE" : "FALSE"));
if (!button_down)
canvas->left_grabbed_item = FALSE;
@ -506,6 +498,12 @@ e_canvas_button (GtkWidget *widget, GdkEventButton *event)
canvas = GNOME_CANVAS (widget);
d(g_print ("button %d, event type %d, grabbed=%p, current=%p\n",
event->button,
event->type,
canvas->grabbed_item,
canvas->current_item));
/* dispatch normally regardless of the event's window if an item has
has a pointer grab in effect */
if (!canvas->grabbed_item && event->window != canvas->layout.bin_window)