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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* MetaShadowFactory:
*
* Create and cache shadow textures for arbitrary window shapes
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __META_SHADOW_FACTORY_H__
#define __META_SHADOW_FACTORY_H__
#include <cairo.h>
#include "clutter/clutter.h"
#include "cogl/cogl.h"
#include "meta/meta-window-shape.h"
META_EXPORT
GType meta_shadow_get_type (void) G_GNUC_CONST;
/**
* MetaShadowParams:
* @radius: the radius (gaussian standard deviation) of the shadow
* @top_fade: if >= 0, the shadow doesn't extend above the top
* of the shape, and fades out over the given number of pixels
* @x_offset: horizontal offset of the shadow with respect to the
* shape being shadowed, in pixels
* @y_offset: vertical offset of the shadow with respect to the
* shape being shadowed, in pixels
* @opacity: opacity of the shadow, from 0 to 255
*
* Information about how to draw a particular style of shadow.
*/
typedef struct _MetaShadowParams MetaShadowParams;
struct _MetaShadowParams
{
int radius;
int top_fade;
int x_offset;
int y_offset;
guint8 opacity;
};
#define META_TYPE_SHADOW_FACTORY (meta_shadow_factory_get_type ())
META_EXPORT
G_DECLARE_FINAL_TYPE (MetaShadowFactory,
meta_shadow_factory,
META, SHADOW_FACTORY,
GObject)
/**
* MetaShadowFactory:
*
* Create window shadows.
*
* It caches shadows internally so that multiple shadows created for
* the same shape with the same radius will share the same [struct@Meta.Shadow].
*/
META_EXPORT
MetaShadowFactory *meta_shadow_factory_get_default (void);
META_EXPORT
void meta_shadow_factory_set_params (MetaShadowFactory *factory,
const char *class_name,
gboolean focused,
MetaShadowParams *params);
META_EXPORT
void meta_shadow_factory_get_params (MetaShadowFactory *factory,
const char *class_name,
gboolean focused,
MetaShadowParams *params);
/**
* MetaShadow:
*
* Holds a shadow texture along with information about how to
* apply that texture to draw a window texture.
*
* E.g., it knows how big the unscaled borders are on each
* side of the shadow texture.
*/
typedef struct _MetaShadow MetaShadow;
META_EXPORT
MetaShadow *meta_shadow_ref (MetaShadow *shadow);
META_EXPORT
void meta_shadow_unref (MetaShadow *shadow);
META_EXPORT
void meta_shadow_paint (MetaShadow *shadow,
CoglFramebuffer *framebuffer,
int window_x,
int window_y,
int window_width,
int window_height,
guint8 opacity,
cairo_region_t *clip,
gboolean clip_strictly);
META_EXPORT
void meta_shadow_get_bounds (MetaShadow *shadow,
int window_x,
int window_y,
int window_width,
int window_height,
cairo_rectangle_int_t *bounds);
META_EXPORT
MetaShadowFactory *meta_shadow_factory_new (void);
META_EXPORT
MetaShadow *meta_shadow_factory_get_shadow (MetaShadowFactory *factory,
MetaWindowShape *shape,
int width,
int height,
const char *class_name,
gboolean focused);
#endif /* __META_SHADOW_FACTORY_H__ */
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