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/*
* Copyright (C) 2008, 2013 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "CSSSegmentedFontFace.h"
#include "CSSFontFace.h"
#include "CSSFontFaceSource.h"
#include "CSSFontSelector.h"
#include "Document.h"
#include "Font.h"
#include "FontCache.h"
#include "FontDescription.h"
#include "RuntimeEnabledFeatures.h"
namespace WebCore {
CSSSegmentedFontFace::CSSSegmentedFontFace(CSSFontSelector& fontSelector)
: m_fontSelector(fontSelector)
{
}
CSSSegmentedFontFace::~CSSSegmentedFontFace()
{
for (auto& face : m_fontFaces)
face->removeClient(*this);
}
void CSSSegmentedFontFace::appendFontFace(Ref<CSSFontFace>&& fontFace)
{
m_cache.clear();
fontFace->addClient(*this);
m_fontFaces.append(WTFMove(fontFace));
}
void CSSSegmentedFontFace::fontLoaded(CSSFontFace&)
{
m_cache.clear();
}
static void appendFontWithInvalidUnicodeRangeIfLoading(FontRanges& ranges, Ref<Font>&& font, const Vector<CSSFontFace::UnicodeRange>& unicodeRanges)
{
if (font->isLoading()) {
ranges.appendRange(FontRanges::Range(0, 0, WTFMove(font)));
return;
}
unsigned numRanges = unicodeRanges.size();
if (!numRanges) {
ranges.appendRange(FontRanges::Range(0, 0x7FFFFFFF, WTFMove(font)));
return;
}
for (unsigned j = 0; j < numRanges; ++j)
ranges.appendRange(FontRanges::Range(unicodeRanges[j].from(), unicodeRanges[j].to(), font.copyRef()));
}
FontRanges CSSSegmentedFontFace::fontRanges(const FontDescription& fontDescription)
{
FontTraitsMask desiredTraitsMask = fontDescription.traitsMask();
auto addResult = m_cache.add(FontDescriptionKey(fontDescription), FontRanges());
auto& fontRanges = addResult.iterator->value;
if (addResult.isNewEntry) {
for (auto& face : m_fontFaces) {
if (face->allSourcesFailed())
continue;
FontTraitsMask traitsMask = face->traitsMask();
bool syntheticBold = (fontDescription.fontSynthesis() & FontSynthesisWeight) && !(traitsMask & (FontWeight600Mask | FontWeight700Mask | FontWeight800Mask | FontWeight900Mask)) && (desiredTraitsMask & (FontWeight600Mask | FontWeight700Mask | FontWeight800Mask | FontWeight900Mask));
bool syntheticItalic = (fontDescription.fontSynthesis() & FontSynthesisStyle) && !(traitsMask & FontStyleItalicMask) && (desiredTraitsMask & FontStyleItalicMask);
if (RefPtr<Font> faceFont = face->font(fontDescription, syntheticBold, syntheticItalic))
appendFontWithInvalidUnicodeRangeIfLoading(fontRanges, faceFont.releaseNonNull(), face->ranges());
}
}
return fontRanges;
}
}
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