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Unified Diff: Source/platform/fonts/mac/ComplexTextController.h

Issue 175253002: Switch to HarfBuzz on Mac and remove CoreText shaper (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Fighting trunk TestExpectation changes Created 6 years, 3 months ago
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Index: Source/platform/fonts/mac/ComplexTextController.h
diff --git a/Source/platform/fonts/mac/ComplexTextController.h b/Source/platform/fonts/mac/ComplexTextController.h
deleted file mode 100644
index 66b42d866828ef4c4bdc18bfa017ef3e04805acc..0000000000000000000000000000000000000000
--- a/Source/platform/fonts/mac/ComplexTextController.h
+++ /dev/null
@@ -1,180 +0,0 @@
-/*
- * Copyright (C) 2007, 2008, 2009, 2011 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. AND ITS CONTRIBUTORS ``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 ITS 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.
- */
-
-#ifndef ComplexTextController_h
-#define ComplexTextController_h
-
-#include "wtf/HashSet.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
-#include "wtf/RetainPtr.h"
-#include "wtf/text/WTFString.h"
-#include "wtf/unicode/Unicode.h"
-#include "wtf/Vector.h"
-#include <ApplicationServices/ApplicationServices.h>
-
-typedef unsigned short CGGlyph;
-
-typedef const struct __CTRun * CTRunRef;
-typedef const struct __CTLine * CTLineRef;
-
-namespace blink {
-
-class Font;
-class GlyphBuffer;
-class SimpleFontData;
-class TextRun;
-
-enum GlyphIterationStyle { IncludePartialGlyphs, ByWholeGlyphs };
-
-// ComplexTextController is responsible for rendering and measuring glyphs for
-// complex scripts on OS X.
-class ComplexTextController {
-public:
- ComplexTextController(const Font*, const TextRun&, bool mayUseNaturalWritingDirection = false, HashSet<const SimpleFontData*>* fallbackFonts = 0, bool forTextEmphasis = false);
-
- // Advance and emit glyphs up to the specified character.
- void advance(unsigned to, GlyphBuffer* = 0, GlyphIterationStyle = IncludePartialGlyphs, HashSet<const SimpleFontData*>* fallbackFonts = 0);
-
- // Compute the character offset for a given x coordinate.
- int offsetForPosition(float x, bool includePartialGlyphs);
-
- // Returns the width of everything we've consumed so far.
- float runWidthSoFar() const { return m_runWidthSoFar; }
-
- float totalWidth() const { return m_totalWidth; }
-
- float minGlyphBoundingBoxX() const { return m_minGlyphBoundingBoxX; }
- float maxGlyphBoundingBoxX() const { return m_maxGlyphBoundingBoxX; }
- float minGlyphBoundingBoxY() const { return m_minGlyphBoundingBoxY; }
- float maxGlyphBoundingBoxY() const { return m_maxGlyphBoundingBoxY; }
-
-private:
- class ComplexTextRun : public RefCounted<ComplexTextRun> {
- public:
- static PassRefPtr<ComplexTextRun> create(CTRunRef ctRun, const SimpleFontData* fontData, const UChar* characters, unsigned stringLocation, size_t stringLength, CFRange runRange)
- {
- return adoptRef(new ComplexTextRun(ctRun, fontData, characters, stringLocation, stringLength, runRange));
- }
-
- static PassRefPtr<ComplexTextRun> create(const SimpleFontData* fontData, const UChar* characters, unsigned stringLocation, size_t stringLength, bool ltr)
- {
- return adoptRef(new ComplexTextRun(fontData, characters, stringLocation, stringLength, ltr));
- }
-
- unsigned glyphCount() const { return m_glyphCount; }
- const SimpleFontData* fontData() const { return m_fontData; }
- const UChar* characters() const { return m_characters; }
- unsigned stringLocation() const { return m_stringLocation; }
- size_t stringLength() const { return m_stringLength; }
- ALWAYS_INLINE CFIndex indexAt(size_t i) const;
- CFIndex indexBegin() const { return m_indexBegin; }
- CFIndex indexEnd() const { return m_indexEnd; }
- CFIndex endOffsetAt(size_t i) const { ASSERT(!m_isMonotonic); return m_glyphEndOffsets[i]; }
- const CGGlyph* glyphs() const { return m_glyphs; }
- const CGSize* advances() const { return m_advances; }
- bool isLTR() const { return m_isLTR; }
- bool isMonotonic() const { return m_isMonotonic; }
- void setIsNonMonotonic();
-
- private:
- ComplexTextRun(CTRunRef, const SimpleFontData*, const UChar* characters, unsigned stringLocation, size_t stringLength, CFRange runRange);
- ComplexTextRun(const SimpleFontData*, const UChar* characters, unsigned stringLocation, size_t stringLength, bool ltr);
-
- unsigned m_glyphCount;
- const SimpleFontData* m_fontData;
- const UChar* m_characters;
- unsigned m_stringLocation;
- size_t m_stringLength;
- Vector<CFIndex, 64> m_coreTextIndicesVector;
- const CFIndex* m_coreTextIndices;
- CFIndex m_indexBegin;
- CFIndex m_indexEnd;
- Vector<CFIndex, 64> m_glyphEndOffsets;
- Vector<CGGlyph, 64> m_glyphsVector;
- const CGGlyph* m_glyphs;
- Vector<CGSize, 64> m_advancesVector;
- const CGSize* m_advances;
- bool m_isLTR;
- bool m_isMonotonic;
- };
-
- static unsigned stringBegin(const ComplexTextRun& run) { return run.stringLocation() + run.indexBegin(); }
- static unsigned stringEnd(const ComplexTextRun& run) { return run.stringLocation() + run.indexEnd(); }
-
- void collectComplexTextRuns();
-
- void collectComplexTextRunsForCharacters(const UChar*, unsigned length, unsigned stringLocation, const SimpleFontData*);
- void adjustGlyphsAndAdvances();
-
- unsigned findNextRunIndex(unsigned runIndex) const;
- unsigned indexOfCurrentRun(unsigned& leftmostGlyph);
- unsigned incrementCurrentRun(unsigned& leftmostGlyph);
-
- // The initial capacity of these vectors was selected as being the smallest power of two greater than
- // the average (3.5) plus one standard deviation (7.5) of nonzero sizes used on Arabic Wikipedia.
- Vector<unsigned, 16> m_runIndices;
- Vector<unsigned, 16> m_glyphCountFromStartToIndex;
-
- const Font& m_font;
- const TextRun& m_run;
- bool m_isLTROnly;
- bool m_mayUseNaturalWritingDirection;
- bool m_forTextEmphasis;
-
- Vector<String> m_stringsFor8BitRuns;
- Vector<UChar, 256> m_smallCapsBuffer;
-
- // Retain lines rather than their runs for better performance.
- Vector<RetainPtr<CTLineRef> > m_coreTextLines;
- Vector<RefPtr<ComplexTextRun>, 16> m_complexTextRuns;
- Vector<CGSize, 256> m_adjustedAdvances;
- Vector<CGGlyph, 256> m_adjustedGlyphs;
-
- unsigned m_currentCharacter;
- int m_end;
-
- CGFloat m_totalWidth;
-
- float m_runWidthSoFar;
- unsigned m_numGlyphsSoFar;
- size_t m_currentRun;
- unsigned m_glyphInCurrentRun;
- unsigned m_characterInCurrentGlyph;
- float m_expansion;
- float m_expansionPerOpportunity;
- float m_leadingExpansion;
- bool m_afterExpansion;
-
- HashSet<const SimpleFontData*>* m_fallbackFonts;
-
- float m_minGlyphBoundingBoxX;
- float m_maxGlyphBoundingBoxX;
- float m_minGlyphBoundingBoxY;
- float m_maxGlyphBoundingBoxY;
-};
-
-} // namespace blink
-
-#endif // ComplexTextController_h
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