mutter/cogl/cogl-atlas-texture-private.h
Neil Roberts 239614a375 cogl-atlas-texture: Add a callback for when any atlas reorganizes
This adds cogl_atlas_texture_* functions to register a callback that
will get invoked whenever any of the CoglAtlas's the textures use get
reorganized. The callback is global and is not tied to any particular
atlas texture.
2011-05-05 17:32:28 +01:00

81 lines
2.6 KiB
C

/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_ATLAS_TEXTURE_H
#define __COGL_ATLAS_TEXTURE_H
#include "cogl-handle.h"
#include "cogl-texture-private.h"
#include "cogl-rectangle-map.h"
#include "cogl-atlas.h"
#define COGL_ATLAS_TEXTURE(tex) ((CoglAtlasTexture *) tex)
typedef struct _CoglAtlasTexture CoglAtlasTexture;
struct _CoglAtlasTexture
{
CoglTexture _parent;
/* The format that the texture is in. This isn't necessarily the
same format as the atlas texture because we can store
pre-multiplied and non-pre-multiplied textures together */
CoglPixelFormat format;
/* The rectangle that was used to add this texture to the
atlas. This includes the 1-pixel border */
CoglRectangleMapEntry rectangle;
/* The atlas that this texture is in. If the texture is no longer in
an atlas then this will be NULL. A reference is taken on the
atlas by the texture (but not vice versa so there is no cycle) */
CoglAtlas *atlas;
/* A CoglSubTexture representing the region for easy rendering */
CoglHandle sub_texture;
};
GQuark
_cogl_handle_atlas_texture_get_type (void);
CoglHandle
_cogl_atlas_texture_new_from_bitmap (CoglBitmap *bmp,
CoglTextureFlags flags,
CoglPixelFormat internal_format);
CoglHandle
_cogl_atlas_texture_new_with_size (unsigned int width,
unsigned int height,
CoglTextureFlags flags,
CoglPixelFormat internal_format);
void
_cogl_atlas_texture_add_reorganize_callback (GHookFunc callback,
void *user_data);
void
_cogl_atlas_texture_remove_reorganize_callback (GHookFunc callback,
void *user_data);
#endif /* __COGL_ATLAS_TEXTURE_H */