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gtk-demo: Improve drag icon handling in dnd example

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Make the opacity change only apply to the 'ghost' of
the item, not the drag icon.
This commit is contained in:
Matthias Clasen 2020-05-22 13:25:17 -04:00
parent e54060bac2
commit d2f979ffaf
1 changed files with 8 additions and 2 deletions
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10
demos/gtk-demo/dnd.c
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@ -187,6 +187,12 @@ canvas_item_new (double x,
return GTK_WIDGET (item);
}
static GdkPaintable *
canvas_item_get_drag_icon (CanvasItem *item)
{
return gtk_widget_paintable_new (item->label);
}
static GdkContentProvider *
prepare (GtkDragSource *source,
double x,
@ -218,11 +224,11 @@ drag_begin (GtkDragSource *source,
canvas = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (source));
item = g_object_get_data (G_OBJECT (canvas), "dragged-item");
paintable = gtk_widget_paintable_new (item);
paintable = canvas_item_get_drag_icon (CANVAS_ITEM (item));
gtk_drag_source_set_icon (source, paintable, 0, 0);
g_object_unref (paintable);
gtk_widget_set_opacity (item, 0.5);
gtk_widget_set_opacity (item, 0.3);
}
static void