The Tor Browser: gfx/graphite2/src/Font.cpp@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /*  GRAPHITE2 LICENSING

     3     Copyright 2010, SIL International

     4     All rights reserved.

     6     This library is free software; you can redistribute it and/or modify

     7     it under the terms of the GNU Lesser General Public License as published

     8     by the Free Software Foundation; either version 2.1 of License, or

     9     (at your option) any later version.

    11     This program is distributed in the hope that it will be useful,

    12     but WITHOUT ANY WARRANTY; without even the implied warranty of

    13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    14     Lesser General Public License for more details.

    16     You should also have received a copy of the GNU Lesser General Public

    17     License along with this library in the file named "LICENSE".

    18     If not, write to the Free Software Foundation, 51 Franklin Street,

    19     Suite 500, Boston, MA 02110-1335, USA or visit their web page on the

    20     internet at http://www.fsf.org/licenses/lgpl.html.

    22 Alternatively, the contents of this file may be used under the terms of the

    23 Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public

    24 License, as published by the Free Software Foundation, either version 2

    25 of the License or (at your option) any later version.

    26 */

    27 #include "inc/Face.h"

    28 #include "inc/Font.h"

    29 #include "inc/GlyphCache.h"

    31 using namespace graphite2;

    33 Font::Font(float ppm, const Face & f, const void * appFontHandle, const gr_font_ops * ops)

    34 : m_appFontHandle(appFontHandle ? appFontHandle : this),

    35   m_face(f),

    36   m_scale(ppm / f.glyphs().unitsPerEm()),

    37   m_hinted(appFontHandle && ops && (ops->glyph_advance_x || ops->glyph_advance_y))

    38 {

    39     memset(&m_ops, 0, sizeof m_ops);

    40     if (m_hinted && ops)

    41         memcpy(&m_ops, ops, min(sizeof m_ops, ops->size));

    42     else

    43         m_ops.glyph_advance_x = &Face::default_glyph_advance;

    45     size_t nGlyphs = f.glyphs().numGlyphs();

    46     m_advances = gralloc<float>(nGlyphs);

    47     if (m_advances)

    48     {

    49         for (float *advp = m_advances; nGlyphs; --nGlyphs, ++advp)

    50             *advp = INVALID_ADVANCE;

    51     }

    52 }

    55 /*virtual*/ Font::~Font()

    56 {

    57     free(m_advances);

    58 }

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