AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity

Implement gtk_drag_set_icon_surface in gtkdnd-quartz

Browse Source
This commit is contained in:
Kristian Rietveld 2010-10-17 10:07:29 +02:00
parent d2c6533107
commit f27d7bdea5
1 changed files with 73 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
gtk/gtkdnd-quartz.c
View File

@ -1629,6 +1629,79 @@ gtk_drag_set_icon_stock (GdkDragContext *context,
set_icon_stock_pixbuf (context, stock_id, NULL, hot_x, hot_y);
}
/* XXX: This function is in gdk, too. Should it be in Cairo? */
static gboolean
_gtk_cairo_surface_extents (cairo_surface_t *surface,
GdkRectangle *extents)
{
double x1, x2, y1, y2;
cairo_t *cr;
g_return_val_if_fail (surface != NULL, FALSE);
g_return_val_if_fail (extents != NULL, FALSE);
cr = cairo_create (surface);
cairo_clip_extents (cr, &x1, &y1, &x2, &y2);
x1 = floor (x1);
y1 = floor (y1);
x2 = ceil (x2);
y2 = ceil (y2);
x2 -= x1;
y2 -= y1;
if (x1 < G_MININT || x1 > G_MAXINT ||
y1 < G_MININT || y1 > G_MAXINT ||
x2 > G_MAXINT || y2 > G_MAXINT)
{
extents->x = extents->y = extents->width = extents->height = 0;
return FALSE;
}
extents->x = x1;
extents->y = y1;
extents->width = x2;
extents->height = y2;
return TRUE;
}
/**
* gtk_drag_set_icon_surface:
* @context: the context for a drag. (This must be called
* with a context for the source side of a drag)
* @surface: the surface to use as icon
*
* Sets @surface as the icon for a given drag. GTK+ retains
* references for the arguments, and will release them when
* they are no longer needed.
*
* To position the surface relative to the mouse, use
* cairo_surface_set_device_offset() on @surface. The mouse
* cursor will be positioned at the (0,0) coordinate of the
* surface.
**/
void
gtk_drag_set_icon_surface (GdkDragContext *context,
cairo_surface_t *surface)
{
GdkPixbuf *pixbuf;
GdkRectangle extents;
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
g_return_if_fail (context->is_source);
g_return_if_fail (surface != NULL);
_gtk_cairo_surface_extents (surface, &extents);
pixbuf = gdk_pixbuf_get_from_surface (surface,
extents.x, extents.y,
extents.width, extents.height);
gtk_drag_set_icon_pixbuf (context, pixbuf, 0, 0);
g_object_unref (pixbuf);
}
/**
* gtk_drag_set_icon_name:
* @context: the context for a drag. (This must be called