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77 lines
2.4 KiB
C++
77 lines
2.4 KiB
C++
/*
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* Copyright (C) 2013 Google, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef CSSCustomFontData_h
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#define CSSCustomFontData_h
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#include "core/css/CSSFontFaceSource.h"
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#include "platform/fonts/CustomFontData.h"
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namespace blink {
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class CSSCustomFontData final : public CustomFontData {
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public:
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enum FallbackVisibility { InvisibleFallback, VisibleFallback };
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static PassRefPtr<CSSCustomFontData> create(RemoteFontFaceSource* source, FallbackVisibility visibility)
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{
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return adoptRef(new CSSCustomFontData(source, visibility));
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}
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virtual ~CSSCustomFontData() { }
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virtual bool shouldSkipDrawing() const override
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{
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if (m_fontFaceSource)
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m_fontFaceSource->paintRequested();
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return m_fallbackVisibility == InvisibleFallback && m_isLoading;
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}
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virtual void beginLoadIfNeeded() const override
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{
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if (!m_isLoading && m_fontFaceSource) {
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m_isLoading = true;
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m_fontFaceSource->beginLoadIfNeeded();
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}
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}
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virtual bool isLoading() const override { return m_isLoading; }
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virtual bool isLoadingFallback() const override { return true; }
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virtual void clearFontFaceSource() override { m_fontFaceSource = 0; }
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private:
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CSSCustomFontData(RemoteFontFaceSource* source, FallbackVisibility visibility)
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: m_fontFaceSource(source)
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, m_fallbackVisibility(visibility)
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, m_isLoading(false)
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{
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if (source)
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m_isLoading = source->isLoading();
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}
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RemoteFontFaceSource* m_fontFaceSource;
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FallbackVisibility m_fallbackVisibility;
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mutable bool m_isLoading;
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};
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}
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#endif // CSSCustomFontData_h
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