source: mainline/uspace/lib/gfxfont/private/glyph_bmp.h

Last change on this file was dd65f4f7, checked in by Jiri Svoboda <jiri@…>, 5 years ago

Only save minimum used rectangle of glyph bitmap

When the image becomes smaller (clearing pixels), we don't want to keep
saving zero pixels.

  • Property mode set to 100644
File size: 2.1 KB
Line 
1/*
2 * Copyright (c) 2020 Jiri Svoboda
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup libgfxfont
30 * @{
31 */
32/**
33 * @file Glyph structure
34 *
35 */
36
37#ifndef _GFX_PRIVATE_GLYPH_BMP_H
38#define _GFX_PRIVATE_GLYPH_BMP_H
39
40#include <gfx/coord.h>
41#include <types/gfx/glyph_bmp.h>
42
43/** Glyph bitmap
44 *
45 * Glyph bitmap open for editing. This is used to edit glyph bitmap.
46 * Updating the entire font bitmap whenever the glyph is resized could
47 * be costly. This allows to postpone the update until we are done editing.
48 *
49 * This is private to libgfxfont.
50 */
51struct gfx_glyph_bmp {
52 /** Containing glyph */
53 struct gfx_glyph *glyph;
54 /** Rectangle covered by bitmap */
55 gfx_rect_t rect;
56 /** Pixel array */
57 int *pixels;
58};
59
60extern void gfx_glyph_bmp_find_used_rect(gfx_glyph_bmp_t *, gfx_rect_t *);
61
62#endif
63
64/** @}
65 */
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