02b69e4d76
GCC has some optimization for the inclusion guard, but they only work if the check is the outermost one. We're fairly inconsistent because of historical reasons, so we should ensure that we follow the same pattern in every public header.
104 lines
3.6 KiB
C
104 lines
3.6 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Copyright (C) 2012 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Author:
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* Emmanuele Bassi <ebassi@linux.intel.com>
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*/
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#ifndef __CLUTTER_CONTENT_H__
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#define __CLUTTER_CONTENT_H__
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#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
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#error "Only <clutter/clutter.h> can be included directly."
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#endif
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#include <clutter/clutter-types.h>
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G_BEGIN_DECLS
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#define CLUTTER_TYPE_CONTENT (clutter_content_get_type ())
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#define CLUTTER_CONTENT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_CONTENT, ClutterContent))
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#define CLUTTER_IS_CONTENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_CONTENT))
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#define CLUTTER_CONTENT_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), CLUTTER_TYPE_CONTENT, ClutterContentIface))
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typedef struct _ClutterContentIface ClutterContentIface;
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/**
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* ClutterContent:
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*
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* The #ClutterContent structure is an opaque type
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* whose members cannot be acccessed directly.
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*
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* Since: 1.10
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*/
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/**
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* ClutterContentIface:
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* @get_preferred_size: virtual function; should be overridden by subclasses
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* of #ClutterContent that have a natural size
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* @paint_content: virtual function; called each time the content needs to
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* paint itself
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* @attached: virtual function; called each time a #ClutterContent is attached
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* to a #ClutterActor.
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* @detached: virtual function; called each time a #ClutterContent is detached
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* from a #ClutterActor.
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* @invalidate: virtual function; called each time a #ClutterContent state
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* is changed.
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*
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* The #ClutterContentIface structure contains only
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* private data.
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*
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* Since: 1.10
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*/
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struct _ClutterContentIface
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{
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/*< private >*/
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GTypeInterface g_iface;
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/*< public >*/
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gboolean (* get_preferred_size) (ClutterContent *content,
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gfloat *width,
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gfloat *height);
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void (* paint_content) (ClutterContent *content,
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ClutterActor *actor,
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ClutterPaintNode *node);
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void (* attached) (ClutterContent *content,
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ClutterActor *actor);
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void (* detached) (ClutterContent *content,
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ClutterActor *actor);
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void (* invalidate) (ClutterContent *content);
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};
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CLUTTER_AVAILABLE_IN_1_10
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GType clutter_content_get_type (void) G_GNUC_CONST;
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CLUTTER_AVAILABLE_IN_1_10
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gboolean clutter_content_get_preferred_size (ClutterContent *content,
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gfloat *width,
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gfloat *height);
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CLUTTER_AVAILABLE_IN_1_10
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void clutter_content_invalidate (ClutterContent *content);
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G_END_DECLS
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#endif /* __CLUTTER_CONTENT_H__ */
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