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/*
* Copyright (C) 2008 Alp Toker <alp@atoker.com>
* Copyright (C) 2010 Igalia S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "FontCustomPlatformData.h"
#include "FontPlatformData.h"
#include "SharedBuffer.h"
#include <cairo-ft.h>
#include <cairo.h>
namespace WebCore {
static void releaseCustomFontData(void* data)
{
static_cast<SharedBuffer*>(data)->deref();
}
FontCustomPlatformData::FontCustomPlatformData(FT_Face freeTypeFace, SharedBuffer* buffer)
: m_freeTypeFace(freeTypeFace)
, m_fontFace(cairo_ft_font_face_create_for_ft_face(freeTypeFace, 0))
{
// FIXME Should we be setting some hinting options here?
buffer->ref(); // This is balanced by the buffer->deref() in releaseCustomFontData.
static cairo_user_data_key_t bufferKey;
cairo_font_face_set_user_data(m_fontFace, &bufferKey, buffer,
static_cast<cairo_destroy_func_t>(releaseCustomFontData));
// Cairo doesn't do FreeType reference counting, so we need to ensure that when
// this cairo_font_face_t is destroyed, it cleans up the FreeType face as well.
static cairo_user_data_key_t freeTypeFaceKey;
cairo_font_face_set_user_data(m_fontFace, &freeTypeFaceKey, freeTypeFace,
reinterpret_cast<cairo_destroy_func_t>(FT_Done_Face));
}
FontCustomPlatformData::~FontCustomPlatformData()
{
// m_freeTypeFace will be destroyed along with m_fontFace. See the constructor.
cairo_font_face_destroy(m_fontFace);
}
FontPlatformData FontCustomPlatformData::fontPlatformData(int size, bool bold, bool italic, FontOrientation, FontRenderingMode)
{
return FontPlatformData(m_fontFace, size, bold, italic);
}
FontCustomPlatformData* createFontCustomPlatformData(SharedBuffer* buffer)
{
ASSERT_ARG(buffer, buffer);
static FT_Library library = 0;
if (!library && FT_Init_FreeType(&library)) {
library = 0;
return 0;
}
FT_Face freeTypeFace;
if (FT_New_Memory_Face(library, reinterpret_cast<const FT_Byte*>(buffer->data()), buffer->size(), 0, &freeTypeFace))
return 0;
return new FontCustomPlatformData(freeTypeFace, buffer);
}
bool FontCustomPlatformData::supportsFormat(const String& format)
{
return equalIgnoringCase(format, "truetype") || equalIgnoringCase(format, "opentype");
}
}
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