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123 lines
5.3 KiB
C
123 lines
5.3 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/*
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* MetaShadowFactory:
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*
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* Create and cache shadow textures for arbitrary window shapes
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*
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* Copyright (C) 2010 Red Hat, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __META_SHADOW_FACTORY_H__
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#define __META_SHADOW_FACTORY_H__
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#include <cairo.h>
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#include <clutter/clutter.h>
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#include <meta/meta-window-shape.h>
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GType meta_shadow_get_type (void) G_GNUC_CONST;
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/**
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* MetaShadowParams:
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* @radius: the radius (gaussian standard deviation) of the shadow
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* @top_fade: if >= 0, the shadow doesn't extend above the top
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* of the shape, and fades out over the given number of pixels
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* @x_offset: horizontal offset of the shadow with respect to the
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* shape being shadowed, in pixels
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* @y_offset: vertical offset of the shadow with respect to the
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* shape being shadowed, in pixels
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* @opacity: opacity of the shadow, from 0 to 255
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*
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* The #MetaShadowParams structure holds information about how to draw
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* a particular style of shadow.
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*/
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typedef struct _MetaShadowParams MetaShadowParams;
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struct _MetaShadowParams
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{
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int radius;
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int top_fade;
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int x_offset;
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int y_offset;
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guint8 opacity;
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};
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#define META_TYPE_SHADOW_FACTORY (meta_shadow_factory_get_type ())
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#define META_SHADOW_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_SHADOW_FACTORY, MetaShadowFactory))
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#define META_SHADOW_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), META_TYPE_SHADOW_FACTORY, MetaShadowFactoryClass))
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#define META_IS_SHADOW_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_SHADOW_FACTORY))
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#define META_IS_SHADOW_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), META_TYPE_SHADOW_FACTORY))
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#define META_SHADOW_FACTORY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), META_TYPE_SHADOW_FACTORY, MetaShadowFactoryClass))
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/**
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* MetaShadowFactory:
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*
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* #MetaShadowFactory is used to create window shadows. It caches shadows internally
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* so that multiple shadows created for the same shape with the same radius will
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* share the same MetaShadow.
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*/
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typedef struct _MetaShadowFactory MetaShadowFactory;
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typedef struct _MetaShadowFactoryClass MetaShadowFactoryClass;
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MetaShadowFactory *meta_shadow_factory_get_default (void);
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GType meta_shadow_factory_get_type (void);
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void meta_shadow_factory_set_params (MetaShadowFactory *factory,
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const char *class_name,
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gboolean focused,
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MetaShadowParams *params);
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void meta_shadow_factory_get_params (MetaShadowFactory *factory,
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const char *class_name,
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gboolean focused,
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MetaShadowParams *params);
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/**
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* MetaShadow:
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* #MetaShadow holds a shadow texture along with information about how to
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* apply that texture to draw a window texture. (E.g., it knows how big the
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* unscaled borders are on each side of the shadow texture.)
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*/
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typedef struct _MetaShadow MetaShadow;
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MetaShadow *meta_shadow_ref (MetaShadow *shadow);
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void meta_shadow_unref (MetaShadow *shadow);
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void meta_shadow_paint (MetaShadow *shadow,
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int window_x,
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int window_y,
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int window_width,
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int window_height,
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guint8 opacity,
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cairo_region_t *clip,
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gboolean clip_strictly);
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void meta_shadow_get_bounds (MetaShadow *shadow,
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int window_x,
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int window_y,
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int window_width,
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int window_height,
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cairo_rectangle_int_t *bounds);
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MetaShadowFactory *meta_shadow_factory_new (void);
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MetaShadow *meta_shadow_factory_get_shadow (MetaShadowFactory *factory,
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MetaWindowShape *shape,
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int width,
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int height,
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const char *class_name,
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gboolean focused);
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#endif /* __META_SHADOW_FACTORY_H__ */
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