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/*
* Copyright (C) 2007-2021 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.
*/
#pragma once
#include "CachedResource.h"
#include "CachedResourceClient.h"
#include "Font.h"
#include "FrameLoaderTypes.h"
#include "TextFlags.h"
#include "TrustedFonts.h"
#include <pal/SessionID.h>
namespace WebCore {
class CachedResourceLoader;
class FontCreationContext;
class FontDescription;
class FontPlatformData;
struct FontSelectionSpecifiedCapabilities;
class SVGDocument;
class SVGFontElement;
struct FontCustomPlatformData;
template <typename T> class FontTaggedSettings;
typedef FontTaggedSettings<int> FontFeatureSettings;
class CachedFont : public CachedResource {
public:
CachedFont(CachedResourceRequest&&, PAL::SessionID, const CookieJar*, Type = Type::FontResource);
virtual ~CachedFont();
void beginLoadIfNeeded(CachedResourceLoader&);
bool stillNeedsLoad() const override { return !m_loadInitiated; }
virtual bool ensureCustomFontData();
static RefPtr<FontCustomPlatformData> createCustomFontData(SharedBuffer&, const String& itemInCollection, bool& wrapping);
static RefPtr<FontCustomPlatformData> createCustomFontDataExperimentalParser(SharedBuffer&, const String& itemInCollection, bool& wrapping);
static FontPlatformData platformDataFromCustomData(FontCustomPlatformData&, const FontDescription&, bool bold, bool italic, const FontCreationContext&);
virtual RefPtr<Font> createFont(const FontDescription&, bool syntheticBold, bool syntheticItalic, const FontCreationContext&);
bool didRefuseToParseCustomFontWithSafeFontParser() const { return m_didRefuseToParseCustomFont; }
protected:
FontPlatformData platformDataFromCustomData(const FontDescription&, bool bold, bool italic, const FontCreationContext&);
bool ensureCustomFontData(SharedBuffer* data);
private:
String calculateItemInCollection() const;
void checkNotify(const NetworkLoadMetrics&, LoadWillContinueInAnotherProcess = LoadWillContinueInAnotherProcess::No) override;
bool mayTryReplaceEncodedData() const override;
void load(CachedResourceLoader&) override;
NO_RETURN_DUE_TO_ASSERT void setBodyDataFrom(const CachedResource&) final { ASSERT_NOT_REACHED(); }
void didAddClient(CachedResourceClient&) override;
void finishLoading(const FragmentedSharedBuffer*, const NetworkLoadMetrics&) override;
void allClientsRemoved() override;
FontParsingPolicy policyForCustomFont(const Ref<SharedBuffer>& data);
void setErrorAndDeleteData();
bool m_loadInitiated;
bool m_hasCreatedFontDataWrappingResource;
FontParsingPolicy m_fontParsingPolicy { FontParsingPolicy::Deny };
bool m_didRefuseToParseCustomFont { false };
RefPtr<FontCustomPlatformData> m_fontCustomPlatformData;
friend class MemoryCache;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::CachedFont)
static bool isType(const WebCore::CachedResource& resource) { return resource.type() == WebCore::CachedResource::Type::FontResource || resource.type() == WebCore::CachedResource::Type::SVGFontResource; }
SPECIALIZE_TYPE_TRAITS_END()
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