gfx/graphite2/src/inc/Font.h@b8a032363ba2 (annotated)
gfx/graphite2/src/inc/Font.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* GRAPHITE2 LICENSING |
| michael@0 | 2 | |
| michael@0 | 3 | Copyright 2010, SIL International |
| michael@0 | 4 | All rights reserved. |
| michael@0 | 5 | |
| michael@0 | 6 | This library is free software; you can redistribute it and/or modify |
| michael@0 | 7 | it under the terms of the GNU Lesser General Public License as published |
| michael@0 | 8 | by the Free Software Foundation; either version 2.1 of License, or |
| michael@0 | 9 | (at your option) any later version. |
| michael@0 | 10 | |
| michael@0 | 11 | This program is distributed in the hope that it will be useful, |
| michael@0 | 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| michael@0 | 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| michael@0 | 14 | Lesser General Public License for more details. |
| michael@0 | 15 | |
| michael@0 | 16 | You should also have received a copy of the GNU Lesser General Public |
| michael@0 | 17 | License along with this library in the file named "LICENSE". |
| michael@0 | 18 | If not, write to the Free Software Foundation, 51 Franklin Street, |
| michael@0 | 19 | Suite 500, Boston, MA 02110-1335, USA or visit their web page on the |
| michael@0 | 20 | internet at http://www.fsf.org/licenses/lgpl.html. |
| michael@0 | 21 | |
| michael@0 | 22 | Alternatively, the contents of this file may be used under the terms of the |
| michael@0 | 23 | Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public |
| michael@0 | 24 | License, as published by the Free Software Foundation, either version 2 |
| michael@0 | 25 | of the License or (at your option) any later version. |
| michael@0 | 26 | */ |
| michael@0 | 27 | #pragma once |
| michael@0 | 28 | #include <cassert> |
| michael@0 | 29 | #include "graphite2/Font.h" |
| michael@0 | 30 | #include "inc/Main.h" |
| michael@0 | 31 | #include "inc/Face.h" |
| michael@0 | 32 | |
| michael@0 | 33 | namespace graphite2 { |
| michael@0 | 34 | |
| michael@0 | 35 | #define INVALID_ADVANCE -1e38f // can't be a static const because non-integral |
| michael@0 | 36 | |
| michael@0 | 37 | class Font |
| michael@0 | 38 | { |
| michael@0 | 39 | public: |
| michael@0 | 40 | Font(float ppm, const Face & face, const void * appFontHandle=0, const gr_font_ops * ops=0); |
| michael@0 | 41 | virtual ~Font(); |
| michael@0 | 42 | |
| michael@0 | 43 | float advance(unsigned short glyphid) const; |
| michael@0 | 44 | float scale() const; |
| michael@0 | 45 | bool isHinted() const; |
| michael@0 | 46 | const Face & face() const; |
| michael@0 | 47 | |
| michael@0 | 48 | CLASS_NEW_DELETE; |
| michael@0 | 49 | private: |
| michael@0 | 50 | gr_font_ops m_ops; |
| michael@0 | 51 | const void * const m_appFontHandle; |
| michael@0 | 52 | float * m_advances; // One advance per glyph in pixels. Nan if not defined |
| michael@0 | 53 | const Face & m_face; |
| michael@0 | 54 | float m_scale; // scales from design units to ppm |
| michael@0 | 55 | bool m_hinted; |
| michael@0 | 56 | |
| michael@0 | 57 | Font(const Font&); |
| michael@0 | 58 | Font& operator=(const Font&); |
| michael@0 | 59 | }; |
| michael@0 | 60 | |
| michael@0 | 61 | inline |
| michael@0 | 62 | float Font::advance(unsigned short glyphid) const |
| michael@0 | 63 | { |
| michael@0 | 64 | if (m_advances[glyphid] == INVALID_ADVANCE) |
| michael@0 | 65 | m_advances[glyphid] = (*m_ops.glyph_advance_x)(m_appFontHandle, glyphid); |
| michael@0 | 66 | return m_advances[glyphid]; |
| michael@0 | 67 | } |
| michael@0 | 68 | |
| michael@0 | 69 | inline |
| michael@0 | 70 | float Font::scale() const |
| michael@0 | 71 | { |
| michael@0 | 72 | return m_scale; |
| michael@0 | 73 | } |
| michael@0 | 74 | |
| michael@0 | 75 | inline |
| michael@0 | 76 | bool Font::isHinted() const |
| michael@0 | 77 | { |
| michael@0 | 78 | return m_hinted; |
| michael@0 | 79 | } |
| michael@0 | 80 | |
| michael@0 | 81 | inline |
| michael@0 | 82 | const Face & Font::face() const |
| michael@0 | 83 | { |
| michael@0 | 84 | return m_face; |
| michael@0 | 85 | } |
| michael@0 | 86 | |
| michael@0 | 87 | } // namespace graphite2 |
| michael@0 | 88 | |
| michael@0 | 89 | struct gr_font : public graphite2::Font {}; |
