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app: connect to the background curves' "dirty" signal in GimpCurveView

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and make sure curves are not added twice to the background list.
Also warn when trying to remove a non-existent background curve.
This commit is contained in:
Michael Natterer
2011-02-09 00:24:43 +01:00
parent 2ed861fb8d
commit 5a28791cfb
1 changed files with 23 additions and 6 deletions
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29
app/widgets/gimpcurveview.c
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@ -244,12 +244,8 @@ gimp_curve_view_dispose (GObject *object)
gimp_curve_view_set_curve (view, NULL);
while (view->bg_curves)
{
BGCurve *bg = view->bg_curves->data;
gimp_curve_view_remove_background (view, bg->curve);
}
if (view->bg_curves)
gimp_curve_view_remove_all_backgrounds (view);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
@ -1134,17 +1130,29 @@ gimp_curve_view_add_background (GimpCurveView *view,
GimpCurve *curve,
const GimpRGB *color)
{
GList *list;
BGCurve *bg;
g_return_if_fail (GIMP_IS_CURVE_VIEW (view));
g_return_if_fail (GIMP_IS_CURVE (curve));
g_return_if_fail (color != NULL);
for (list = view->bg_curves; list; list = g_list_next (list))
{
bg = list->data;
g_return_if_fail (curve != bg->curve);
}
bg = g_slice_new0 (BGCurve);
bg->curve = g_object_ref (curve);
bg->color = *color;
g_signal_connect (bg->curve, "dirty",
G_CALLBACK (gimp_curve_view_curve_dirty),
view);
view->bg_curves = g_list_append (view->bg_curves, bg);
gtk_widget_queue_draw (GTK_WIDGET (view));
@ -1165,6 +1173,9 @@ gimp_curve_view_remove_background (GimpCurveView *view,
if (bg->curve == curve)
{
g_signal_handlers_disconnect_by_func (bg->curve,
gimp_curve_view_curve_dirty,
view);
g_object_unref (bg->curve);
view->bg_curves = g_list_remove (view->bg_curves, bg);
@ -1176,6 +1187,9 @@ gimp_curve_view_remove_background (GimpCurveView *view,
break;
}
}
if (! list)
g_return_if_reached ();
}
void
@ -1187,6 +1201,9 @@ gimp_curve_view_remove_all_backgrounds (GimpCurveView *view)
{
BGCurve *bg = view->bg_curves->data;
g_signal_handlers_disconnect_by_func (bg->curve,
gimp_curve_view_curve_dirty,
view);
g_object_unref (bg->curve);
view->bg_curves = g_list_remove (view->bg_curves, bg);