mutter/src/compositor/meta-window-shape.h
Owen W. Taylor 9f4942e9a7 Make shadows pretty and configurable
The current shadow code just uses a single fixed texture (the Gaussian
blur of a rectangle with a fixed blur radius) for drawing all window
shadows. This patch adds the ability

* Implement efficient blurring of arbitrary regions by approximating
  a Gaussian blur with multiple box blurs.

* Detect when multiple windows can use the same shadow texture by
  converting their shape into a size-invariant MetaWindowShape.

* Add properties shadow-radius, shadow-x-offset, shadow-y-offset,
  shadow-opacity to allow the shadow for a window to be configured.

* Add meta_window_actor_paint() and draw the shadow directly
  from there rather than using a child actor.

* Remove TidyTextureFrame, which is no longer used

https://bugzilla.gnome.org/show_bug.cgi?id=592382
2010-11-18 09:47:56 -05:00

61 lines
2.6 KiB
C

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* MetaWindowShape
*
* Extracted invariant window shape
*
* Copyright (C) 2010 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef __META_WINDOW_SHAPE_H__
#define __META_WINDOW_SHAPE_H__
#include <cairo.h>
#include <glib.h>
/**
* MetaWindowShape:
* #MetaWindowShape represents a 9-sliced region with borders on all sides that
* are unscaled, and a constant central region that is scaled. For example,
* the regions representing two windows that are rounded rectangles,
* with the same corner radius but different sizes, have the
* same MetaWindowShape.
*
* #MetaWindowShape is designed to be used as part of a hash table key, so has
* efficient hash and equal functions.
*/
typedef struct _MetaWindowShape MetaWindowShape;
MetaWindowShape * meta_window_shape_new (cairo_region_t *region);
MetaWindowShape * meta_window_shape_ref (MetaWindowShape *shape);
void meta_window_shape_unref (MetaWindowShape *shape);
guint meta_window_shape_hash (MetaWindowShape *shape);
gboolean meta_window_shape_equal (MetaWindowShape *shape_a,
MetaWindowShape *shape_b);
void meta_window_shape_get_borders (MetaWindowShape *shape,
int *border_top,
int *border_right,
int *border_bottom,
int *border_left);
cairo_region_t *meta_window_shape_to_region (MetaWindowShape *shape,
int center_width,
int center_height);
#endif /* __META_WINDOW_SHAPE_H __*/