| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_TEXT_HYPHENATION_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_TEXT_HYPHENATION_H_ |
| |
| #include "third_party/blink/renderer/platform/platform_export.h" |
| #include "third_party/blink/renderer/platform/wtf/forward.h" |
| #include "third_party/blink/renderer/platform/wtf/hash_map.h" |
| #include "third_party/blink/renderer/platform/wtf/ref_counted.h" |
| #include "third_party/blink/renderer/platform/wtf/text/atomic_string_hash.h" |
| #include "third_party/blink/renderer/platform/wtf/text/string_hash.h" |
| #include "third_party/blink/renderer/platform/wtf/wtf_size_t.h" |
| |
| namespace blink { |
| |
| class PLATFORM_EXPORT Hyphenation : public RefCounted<Hyphenation> { |
| public: |
| virtual ~Hyphenation() = default; |
| |
| // Find the last hyphenation location before |before_index|. |
| // Returns 0 if no hyphenation locations were found. |
| virtual wtf_size_t LastHyphenLocation(const StringView&, |
| wtf_size_t before_index) const = 0; |
| |
| // Find the first hyphenation location after |after_index|. |
| // Returns 0 if no hyphenation locations were found. |
| virtual wtf_size_t FirstHyphenLocation(const StringView&, |
| wtf_size_t after_index) const; |
| |
| // Find all hyphenation locations in the reverse order. |
| virtual Vector<wtf_size_t, 8> HyphenLocations(const StringView&) const; |
| |
| static const unsigned kMinimumPrefixLength = 2; |
| static const unsigned kMinimumSuffixLength = 2; |
| |
| private: |
| friend class LayoutLocale; |
| static scoped_refptr<Hyphenation> PlatformGetHyphenation( |
| const AtomicString& locale); |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_TEXT_HYPHENATION_H_ |