1/* 2 * Copyright (C) 2007, 2008 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef CachedFont_h 27#define CachedFont_h 28 29#include "CachedResource.h" 30#include "CachedResourceClient.h" 31#include "FontOrientation.h" 32#include "FontRenderingMode.h" 33#include "FontWidthVariant.h" 34 35namespace WebCore { 36 37class CachedResourceLoader; 38class FontPlatformData; 39class SVGDocument; 40class SVGFontElement; 41struct FontCustomPlatformData; 42 43class CachedFont final : public CachedResource { 44public: 45 CachedFont(const ResourceRequest&, SessionID); 46 virtual ~CachedFont(); 47 48 void beginLoadIfNeeded(CachedResourceLoader* dl); 49 virtual bool stillNeedsLoad() const override { return !m_loadInitiated; } 50 51 bool ensureCustomFontData(); 52 FontPlatformData platformDataFromCustomData(float size, bool bold, bool italic, FontOrientation = Horizontal, FontWidthVariant = RegularWidth, FontRenderingMode = NormalRenderingMode); 53 54#if ENABLE(SVG_FONTS) 55 bool ensureSVGFontData(); 56 SVGFontElement* getSVGFontById(const String&) const; 57#endif 58 59private: 60 virtual void checkNotify() override; 61 virtual bool mayTryReplaceEncodedData() const override; 62 63 virtual void load(CachedResourceLoader*, const ResourceLoaderOptions&) override; 64 65 virtual void didAddClient(CachedResourceClient*) override; 66 virtual void finishLoading(ResourceBuffer*) override; 67 68 virtual void allClientsRemoved() override; 69 70 std::unique_ptr<FontCustomPlatformData> m_fontData; 71 bool m_loadInitiated; 72 bool m_hasCreatedFontDataWrappingResource; 73 74#if ENABLE(SVG_FONTS) 75 RefPtr<SVGDocument> m_externalSVGDocument; 76#endif 77 78 friend class MemoryCache; 79}; 80 81CACHED_RESOURCE_TYPE_CASTS(CachedFont, CachedResource, CachedResource::FontResource) 82 83} // namespace WebCore 84 85#endif // CachedFont_h 86