| // Copyright 2015 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_FONTS_ORIENTATION_ITERATOR_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_ORIENTATION_ITERATOR_H_ |
| |
| #include <memory> |
| |
| #include "base/macros.h" |
| #include "third_party/blink/renderer/platform/fonts/font_orientation.h" |
| #include "third_party/blink/renderer/platform/fonts/script_run_iterator.h" |
| #include "third_party/blink/renderer/platform/fonts/utf16_text_iterator.h" |
| #include "third_party/blink/renderer/platform/wtf/allocator/allocator.h" |
| |
| namespace blink { |
| |
| class PLATFORM_EXPORT OrientationIterator { |
| USING_FAST_MALLOC(OrientationIterator); |
| |
| public: |
| enum RenderOrientation { |
| kOrientationKeep, |
| kOrientationRotateSideways, |
| kOrientationInvalid |
| }; |
| |
| OrientationIterator(const UChar* buffer, |
| unsigned buffer_size, |
| FontOrientation run_orientation); |
| |
| bool Consume(unsigned* orientation_limit, RenderOrientation*); |
| |
| private: |
| std::unique_ptr<UTF16TextIterator> utf16_iterator_; |
| unsigned buffer_size_; |
| bool at_end_; |
| |
| DISALLOW_COPY_AND_ASSIGN(OrientationIterator); |
| }; |
| |
| } // namespace blink |
| |
| #endif |