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authorChristopher James Lahey <clahey@ximian.com>2001-02-11 13:51:59 +0800
committerChris Lahey <clahey@src.gnome.org>2001-02-11 13:51:59 +0800
commit114587155d8944b4358d103ee438725fe1f28c2b (patch)
tree399094ecd91ef276f19eb0a8a088dc4e6bf0c380 /widgets
parent1807edff68a3f1981ab48e08e6db7fdc65d8f143 (diff)
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Added this function.
2001-02-11 Christopher James Lahey <clahey@ximian.com> * gal/widgets/e-canvas-utils.c, gal/widgets/e-canvas-utils.h (e_canvas_item_show_area_delayed): Added this function. svn path=/trunk/; revision=8168
Diffstat (limited to 'widgets')
-rw-r--r--widgets/misc/e-canvas-utils.c68
-rw-r--r--widgets/misc/e-canvas-utils.h1
2 files changed, 60 insertions, 9 deletions
diff --git a/widgets/misc/e-canvas-utils.c b/widgets/misc/e-canvas-utils.c
index f7b937a8fd..50fcf0d7e5 100644
--- a/widgets/misc/e-canvas-utils.c
+++ b/widgets/misc/e-canvas-utils.c
@@ -63,25 +63,75 @@ compute_offset(int top, int bottom, int page_top, int page_bottom)
}
-void
-e_canvas_item_show_area (GnomeCanvasItem *item, double x1, double y1, double x2, double y2)
+static void
+e_canvas_show_area (GnomeCanvas *canvas, double x1, double y1, double x2, double y2)
{
GtkAdjustment *h, *v;
int dx = 0, dy = 0;
- g_return_if_fail (item != NULL);
- g_return_if_fail (GNOME_IS_CANVAS_ITEM (item));
-
- gnome_canvas_item_i2w(item, &x1, &y1);
- gnome_canvas_item_i2w(item, &x2, &y2);
+ g_return_if_fail (canvas != NULL);
+ g_return_if_fail (GNOME_IS_CANVAS (canvas));
- h = gtk_layout_get_hadjustment(GTK_LAYOUT(item->canvas));
+ h = gtk_layout_get_hadjustment(GTK_LAYOUT(canvas));
dx = compute_offset(x1, x2, h->value, h->value + h->page_size);
if (dx)
gtk_adjustment_set_value(h, CLAMP(h->value + dx, h->lower, h->upper - h->page_size));
- v = gtk_layout_get_vadjustment(GTK_LAYOUT(item->canvas));
+ v = gtk_layout_get_vadjustment(GTK_LAYOUT(canvas));
dy = compute_offset(y1, y2, v->value, v->value + v->page_size);
if (dy)
gtk_adjustment_set_value(v, CLAMP(v->value + dy, v->lower, v->upper - v->page_size));
}
+
+void
+e_canvas_item_show_area (GnomeCanvasItem *item, double x1, double y1, double x2, double y2)
+{
+ g_return_if_fail (item != NULL);
+ g_return_if_fail (GNOME_IS_CANVAS_ITEM (item));
+
+ gnome_canvas_item_i2w(item, &x1, &y1);
+ gnome_canvas_item_i2w(item, &x2, &y2);
+
+ e_canvas_show_area(item->canvas, x1, y1, x2, y2);
+}
+
+typedef struct {
+ double x1;
+ double y1;
+ double x2;
+ double y2;
+ GnomeCanvas *canvas;
+} DoubsAndCanvas;
+
+static gboolean
+show_area_timeout (gpointer data)
+{
+ DoubsAndCanvas *dac = data;
+
+ if (!GTK_OBJECT_DESTROYED(dac->canvas))
+ e_canvas_show_area(dac->canvas, dac->x1, dac->y1, dac->x2, dac->y2);
+ gtk_object_unref(GTK_OBJECT(dac->canvas));
+ g_free(dac);
+ return FALSE;
+}
+
+void
+e_canvas_item_show_area_delayed (GnomeCanvasItem *item, double x1, double y1, double x2, double y2, gint delay)
+{
+ DoubsAndCanvas *dac;
+
+ g_return_if_fail (item != NULL);
+ g_return_if_fail (GNOME_IS_CANVAS_ITEM (item));
+
+ gnome_canvas_item_i2w(item, &x1, &y1);
+ gnome_canvas_item_i2w(item, &x2, &y2);
+
+ dac = g_new(DoubsAndCanvas, 1);
+ dac->x1 = x1;
+ dac->y1 = y1;
+ dac->x2 = x2;
+ dac->y2 = y2;
+ dac->canvas = item->canvas;
+ gtk_object_ref(GTK_OBJECT(item->canvas));
+ g_timeout_add(delay, show_area_timeout, dac);
+}
diff --git a/widgets/misc/e-canvas-utils.h b/widgets/misc/e-canvas-utils.h
index a940ea393c..6c426fb676 100644
--- a/widgets/misc/e-canvas-utils.h
+++ b/widgets/misc/e-canvas-utils.h
@@ -26,5 +26,6 @@
#include <gnome.h>
void e_canvas_item_move_absolute (GnomeCanvasItem *item, double dx, double dy);
void e_canvas_item_show_area (GnomeCanvasItem *item, double x1, double y1, double x2, double y2);
+void e_canvas_item_show_area_delayed (GnomeCanvasItem *item, double x1, double y1, double x2, double y2, gint delay);
#endif /* __E_CANVAS_UTILS__ */