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58e84c8bf0
* Re-land "Support multiple shells in a single process. (#4932)" This reverts commit 723c7d01439da4261bc836075fb55651ce9e7f03.
69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef FLUTTER_RUNTIME_ASSET_FONT_SELECTOR_H_
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#define FLUTTER_RUNTIME_ASSET_FONT_SELECTOR_H_
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#include <unordered_map>
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#include <vector>
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#include "flutter/assets/asset_manager.h"
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#include "flutter/assets/zip_asset_store.h"
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#include "flutter/sky/engine/platform/fonts/FontCacheKey.h"
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#include "flutter/sky/engine/platform/fonts/FontSelector.h"
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#include "flutter/sky/engine/platform/fonts/SimpleFontData.h"
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namespace blink {
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// A FontSelector implementation that resolves custon font names to assets
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// loaded from the asset directory.
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class AssetFontSelector : public FontSelector {
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public:
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struct FlutterFontAttributes;
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~AssetFontSelector() override;
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static void Install(fxl::RefPtr<AssetManager> asset_manager);
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PassRefPtr<FontData> getFontData(const FontDescription& font_description,
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const AtomicString& family_name) override;
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void willUseFontData(const FontDescription& font_description,
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const AtomicString& family,
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UChar32 character) override;
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unsigned version() const override;
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void fontCacheInvalidated() override;
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private:
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struct TypefaceAsset;
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explicit AssetFontSelector(fxl::RefPtr<AssetManager> asset_manager);
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void parseFontManifest();
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sk_sp<SkTypeface> getTypefaceAsset(const FontDescription& font_description,
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const AtomicString& family_name);
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fxl::RefPtr<AssetManager> asset_manager_;
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HashMap<AtomicString, std::vector<FlutterFontAttributes>> font_family_map_;
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std::unordered_map<std::string, std::unique_ptr<TypefaceAsset>>
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typeface_cache_;
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typedef HashMap<FontCacheKey,
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RefPtr<SimpleFontData>,
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FontCacheKeyHash,
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FontCacheKeyTraits>
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FontPlatformDataCache;
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FontPlatformDataCache font_platform_data_cache_;
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};
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} // namespace blink
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#endif // FLUTTER_RUNTIME_ASSET_FONT_SELECTOR_H_
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