| /* |
| * Copyright (C) 2016 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 <dwrite.h> |
| #include <wtf/Vector.h> |
| |
| namespace WebCore { |
| |
| struct AnalyzedRun { |
| unsigned startPosition { 0 }; |
| unsigned length { 0 }; |
| DWRITE_SCRIPT_ANALYSIS analysis; |
| }; |
| |
| struct TextAnalyzerHelper : public IDWriteTextAnalysisSink, IDWriteTextAnalysisSource { |
| TextAnalyzerHelper(const WCHAR* localeName, const WCHAR* buffer, unsigned bufferLength); |
| |
| // IUnknown |
| virtual HRESULT STDMETHODCALLTYPE QueryInterface(_In_ REFIID, _COM_Outptr_ void**); |
| virtual ULONG STDMETHODCALLTYPE AddRef(); |
| virtual ULONG STDMETHODCALLTYPE Release(); |
| |
| // IDWriteTextAnalysisSource |
| virtual HRESULT STDMETHODCALLTYPE GetTextAtPosition(UINT32 textPosition, const WCHAR** textString, UINT32* textLength); |
| virtual HRESULT STDMETHODCALLTYPE GetTextBeforePosition(UINT32 textPosition, const WCHAR** textString, UINT32* textLength); |
| virtual DWRITE_READING_DIRECTION STDMETHODCALLTYPE GetParagraphReadingDirection() { return DWRITE_READING_DIRECTION_LEFT_TO_RIGHT; } |
| virtual HRESULT STDMETHODCALLTYPE GetLocaleName(UINT32 textPosition, UINT32* textLength, const WCHAR** localeName); |
| virtual HRESULT STDMETHODCALLTYPE GetNumberSubstitution(UINT32 textPosition, UINT32* textLength, IDWriteNumberSubstitution**); |
| |
| // IDWriteTextAnalysisSink |
| virtual HRESULT STDMETHODCALLTYPE SetLineBreakpoints(UINT32 textPosition, UINT32 textLength, const DWRITE_LINE_BREAKPOINT*); |
| virtual HRESULT STDMETHODCALLTYPE SetScriptAnalysis(UINT32 textPosition, UINT32 textLength, const DWRITE_SCRIPT_ANALYSIS*); |
| virtual HRESULT STDMETHODCALLTYPE SetBidiLevel(UINT32 textPosition, UINT32 textLength, UINT8 explicitLevel, UINT8 resolvedLevel); |
| virtual HRESULT STDMETHODCALLTYPE SetNumberSubstitution(UINT32 textPosition, UINT32 textLength, IDWriteNumberSubstitution*); |
| |
| const WCHAR* m_localeName { nullptr }; |
| const WCHAR* m_buffer { nullptr }; |
| unsigned m_bufferLength { 0 }; |
| Vector<AnalyzedRun> m_analyzedRuns; |
| ULONG m_refCount { 0 }; |
| }; |
| |
| } |