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Unified Diff: Source/core/platform/graphics/mac/ComplexTextControllerCoreText.mm

Issue 99103006: Moving GraphicsContext and dependencies from core to platform. (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Final patch - fixes Android Created 7 years ago
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Index: Source/core/platform/graphics/mac/ComplexTextControllerCoreText.mm
diff --git a/Source/core/platform/graphics/mac/ComplexTextControllerCoreText.mm b/Source/core/platform/graphics/mac/ComplexTextControllerCoreText.mm
deleted file mode 100644
index cfb5cd3d60de598af843fb4bcd9537b6feda0384..0000000000000000000000000000000000000000
--- a/Source/core/platform/graphics/mac/ComplexTextControllerCoreText.mm
+++ /dev/null
@@ -1,297 +0,0 @@
-/*
- * Copyright (C) 2007, 2008, 2009, 2010, 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.
- */
-
-#include "config.h"
-
-#include "core/platform/graphics/mac/ComplexTextController.h"
-
-#include "core/platform/graphics/Font.h"
-#include "core/platform/graphics/FontCache.h"
-#include "platform/graphics/TextRun.h"
-
-#include <ApplicationServices/ApplicationServices.h>
-#import <AvailabilityMacros.h>
-
-// Forward declare Mac SPIs.
-extern "C" {
-// Request for public API: rdar://13803619
-CTLineRef CTLineCreateWithUniCharProvider(const UniChar* (*provide)(CFIndex stringIndex, CFIndex* charCount, CFDictionaryRef* attributes, void* context), void (*dispose)(const UniChar* chars, void* context), void* context);
-}
-
-@interface WebCascadeList : NSArray {
- @private
- const WebCore::Font* _font;
- UChar32 _character;
- NSUInteger _count;
- Vector<RetainPtr<CTFontDescriptorRef>, 16> _fontDescriptors;
-}
-
-- (id)initWithFont:(const WebCore::Font*)font character:(UChar32)character;
-
-@end
-
-@implementation WebCascadeList
-
-- (id)initWithFont:(const WebCore::Font*)font character:(UChar32)character
-{
- if (!(self = [super init]))
- return nil;
-
- _font = font;
- _character = character;
-
- // By the time a WebCascadeList is used, the Font has already been asked to realize all of its
- // FontData, so this loop does not hit the FontCache.
- while (_font->fontDataAt(_count))
- _count++;
-
- return self;
-}
-
-- (NSUInteger)count
-{
- return _count;
-}
-
-- (id)objectAtIndex:(NSUInteger)index
-{
- CTFontDescriptorRef fontDescriptor;
- if (index < _fontDescriptors.size()) {
- if ((fontDescriptor = _fontDescriptors[index].get()))
- return (id)fontDescriptor;
- } else
- _fontDescriptors.grow(index + 1);
-
- const WebCore::SimpleFontData* fontData = _font->fontDataAt(index)->fontDataForCharacter(_character);
- fontDescriptor = CTFontCopyFontDescriptor(fontData->platformData().ctFont());
- _fontDescriptors[index] = RetainPtr<CTFontDescriptorRef>(AdoptCF, fontDescriptor);
- return (id)fontDescriptor;
-}
-
-@end
-
-namespace WebCore {
-
-ComplexTextController::ComplexTextRun::ComplexTextRun(CTRunRef ctRun, const SimpleFontData* fontData, const UChar* characters, unsigned stringLocation, size_t stringLength, CFRange runRange)
- : m_fontData(fontData)
- , m_characters(characters)
- , m_stringLocation(stringLocation)
- , m_stringLength(stringLength)
- , m_indexBegin(runRange.location)
- , m_indexEnd(runRange.location + runRange.length)
- , m_isLTR(!(CTRunGetStatus(ctRun) & kCTRunStatusRightToLeft))
- , m_isMonotonic(true)
-{
- m_glyphCount = CTRunGetGlyphCount(ctRun);
- m_coreTextIndices = CTRunGetStringIndicesPtr(ctRun);
- if (!m_coreTextIndices) {
- m_coreTextIndicesVector.grow(m_glyphCount);
- CTRunGetStringIndices(ctRun, CFRangeMake(0, 0), m_coreTextIndicesVector.data());
- m_coreTextIndices = m_coreTextIndicesVector.data();
- }
-
- m_glyphs = CTRunGetGlyphsPtr(ctRun);
- if (!m_glyphs) {
- m_glyphsVector.grow(m_glyphCount);
- CTRunGetGlyphs(ctRun, CFRangeMake(0, 0), m_glyphsVector.data());
- m_glyphs = m_glyphsVector.data();
- }
-
- m_advances = CTRunGetAdvancesPtr(ctRun);
- if (!m_advances) {
- m_advancesVector.grow(m_glyphCount);
- CTRunGetAdvances(ctRun, CFRangeMake(0, 0), m_advancesVector.data());
- m_advances = m_advancesVector.data();
- }
-}
-
-// Missing glyphs run constructor. Core Text will not generate a run of missing glyphs, instead falling back on
-// glyphs from LastResort. We want to use the primary font's missing glyph in order to match the fast text code path.
-ComplexTextController::ComplexTextRun::ComplexTextRun(const SimpleFontData* fontData, const UChar* characters, unsigned stringLocation, size_t stringLength, bool ltr)
- : m_fontData(fontData)
- , m_characters(characters)
- , m_stringLocation(stringLocation)
- , m_stringLength(stringLength)
- , m_indexBegin(0)
- , m_indexEnd(stringLength)
- , m_isLTR(ltr)
- , m_isMonotonic(true)
-{
- m_coreTextIndicesVector.reserveInitialCapacity(m_stringLength);
- unsigned r = 0;
- while (r < m_stringLength) {
- m_coreTextIndicesVector.uncheckedAppend(r);
- if (U_IS_SURROGATE(m_characters[r])) {
- ASSERT(r + 1 < m_stringLength);
- ASSERT(U_IS_SURROGATE_LEAD(m_characters[r]));
- ASSERT(U_IS_TRAIL(m_characters[r + 1]));
- r += 2;
- } else
- r++;
- }
- m_glyphCount = m_coreTextIndicesVector.size();
- if (!ltr) {
- for (unsigned r = 0, end = m_glyphCount - 1; r < m_glyphCount / 2; ++r, --end)
- std::swap(m_coreTextIndicesVector[r], m_coreTextIndicesVector[end]);
- }
- m_coreTextIndices = m_coreTextIndicesVector.data();
-
- // Synthesize a run of missing glyphs.
- m_glyphsVector.fill(0, m_glyphCount);
- m_glyphs = m_glyphsVector.data();
- m_advancesVector.fill(CGSizeMake(m_fontData->widthForGlyph(0), 0), m_glyphCount);
- m_advances = m_advancesVector.data();
-}
-
-struct ProviderInfo {
- const UChar* cp;
- unsigned length;
- CFDictionaryRef attributes;
-};
-
-static const UniChar* provideStringAndAttributes(CFIndex stringIndex, CFIndex* charCount, CFDictionaryRef* attributes, void* refCon)
-{
- ProviderInfo* info = static_cast<struct ProviderInfo*>(refCon);
- if (stringIndex < 0 || static_cast<unsigned>(stringIndex) >= info->length)
- return 0;
-
- *charCount = info->length - stringIndex;
- *attributes = info->attributes;
- return info->cp + stringIndex;
-}
-
-void ComplexTextController::collectComplexTextRunsForCharacters(const UChar* cp, unsigned length, unsigned stringLocation, const SimpleFontData* fontData)
-{
- if (!fontData) {
- // Create a run of missing glyphs from the primary font.
- m_complexTextRuns.append(ComplexTextRun::create(m_font.primaryFont(), cp, stringLocation, length, m_run.ltr()));
- return;
- }
-
- bool isSystemFallback = false;
-
- UChar32 baseCharacter = 0;
- RetainPtr<CFDictionaryRef> stringAttributes;
- if (fontData == SimpleFontData::systemFallback()) {
- // FIXME: This code path does not support small caps.
- isSystemFallback = true;
-
- U16_GET(cp, 0, 0, length, baseCharacter);
- fontData = m_font.fontDataAt(0)->fontDataForCharacter(baseCharacter);
-
- RetainPtr<WebCascadeList> cascadeList(AdoptNS, [[WebCascadeList alloc] initWithFont:&m_font character:baseCharacter]);
-
- stringAttributes.adoptCF(CFDictionaryCreateMutableCopy(kCFAllocatorDefault, 0, fontData->getCFStringAttributes(m_font.typesettingFeatures(), fontData->platformData().orientation())));
- static const void* attributeKeys[] = { kCTFontCascadeListAttribute };
- const void* values[] = { cascadeList.get() };
- RetainPtr<CFDictionaryRef> attributes(AdoptCF, CFDictionaryCreate(kCFAllocatorDefault, attributeKeys, values, sizeof(attributeKeys) / sizeof(*attributeKeys), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
- RetainPtr<CTFontDescriptorRef> fontDescriptor(AdoptCF, CTFontDescriptorCreateWithAttributes(attributes.get()));
- RetainPtr<CTFontRef> fontWithCascadeList(AdoptCF, CTFontCreateCopyWithAttributes(fontData->platformData().ctFont(), m_font.pixelSize(), 0, fontDescriptor.get()));
- CFDictionarySetValue(const_cast<CFMutableDictionaryRef>(stringAttributes.get()), kCTFontAttributeName, fontWithCascadeList.get());
- } else
- stringAttributes = fontData->getCFStringAttributes(m_font.typesettingFeatures(), fontData->platformData().orientation());
-
- RetainPtr<CTLineRef> line;
-
- if (!m_mayUseNaturalWritingDirection || m_run.directionalOverride()) {
- static const void* optionKeys[] = { kCTTypesetterOptionForcedEmbeddingLevel };
- const short ltrForcedEmbeddingLevelValue = 0;
- const short rtlForcedEmbeddingLevelValue = 1;
- static const void* ltrOptionValues[] = { CFNumberCreate(kCFAllocatorDefault, kCFNumberShortType, &ltrForcedEmbeddingLevelValue) };
- static const void* rtlOptionValues[] = { CFNumberCreate(kCFAllocatorDefault, kCFNumberShortType, &rtlForcedEmbeddingLevelValue) };
- static CFDictionaryRef ltrTypesetterOptions = CFDictionaryCreate(kCFAllocatorDefault, optionKeys, ltrOptionValues, WTF_ARRAY_LENGTH(optionKeys), &kCFCopyStringDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
- static CFDictionaryRef rtlTypesetterOptions = CFDictionaryCreate(kCFAllocatorDefault, optionKeys, rtlOptionValues, WTF_ARRAY_LENGTH(optionKeys), &kCFCopyStringDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
-
-#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
- ProviderInfo info = { cp, length, stringAttributes.get() };
- RetainPtr<CTTypesetterRef> typesetter(AdoptCF, WKCreateCTTypesetterWithUniCharProviderAndOptions(&provideStringAndAttributes, 0, &info, m_run.ltr() ? ltrTypesetterOptions : rtlTypesetterOptions));
-#else
- RetainPtr<CFStringRef> string(AdoptCF, CFStringCreateWithCharactersNoCopy(kCFAllocatorDefault, cp, length, kCFAllocatorNull));
- RetainPtr<CFAttributedStringRef> attributedString(AdoptCF, CFAttributedStringCreate(kCFAllocatorDefault, string.get(), stringAttributes.get()));
- RetainPtr<CTTypesetterRef> typesetter(AdoptCF, CTTypesetterCreateWithAttributedStringAndOptions(attributedString.get(), m_run.ltr() ? ltrTypesetterOptions : rtlTypesetterOptions));
-#endif
-
- line.adoptCF(CTTypesetterCreateLine(typesetter.get(), CFRangeMake(0, 0)));
- } else {
- ProviderInfo info = { cp, length, stringAttributes.get() };
-
- line.adoptCF(CTLineCreateWithUniCharProvider(&provideStringAndAttributes, 0, &info));
- }
-
- m_coreTextLines.append(line.get());
-
- CFArrayRef runArray = CTLineGetGlyphRuns(line.get());
-
- CFIndex runCount = CFArrayGetCount(runArray);
-
- for (CFIndex r = 0; r < runCount; r++) {
- CTRunRef ctRun = static_cast<CTRunRef>(CFArrayGetValueAtIndex(runArray, m_run.ltr() ? r : runCount - 1 - r));
- ASSERT(CFGetTypeID(ctRun) == CTRunGetTypeID());
- CFRange runRange = CTRunGetStringRange(ctRun);
- const SimpleFontData* runFontData = fontData;
- if (isSystemFallback) {
- CFDictionaryRef runAttributes = CTRunGetAttributes(ctRun);
- CTFontRef runFont = static_cast<CTFontRef>(CFDictionaryGetValue(runAttributes, kCTFontAttributeName));
- ASSERT(CFGetTypeID(runFont) == CTFontGetTypeID());
- if (!CFEqual(runFont, fontData->platformData().ctFont())) {
- // Begin trying to see if runFont matches any of the fonts in the fallback list.
- RetainPtr<CGFontRef> runCGFont(AdoptCF, CTFontCopyGraphicsFont(runFont, 0));
- unsigned i = 0;
- for (const FontData* candidateFontData = m_font.fontDataAt(i); candidateFontData; candidateFontData = m_font.fontDataAt(++i)) {
- runFontData = candidateFontData->fontDataForCharacter(baseCharacter);
- RetainPtr<CGFontRef> cgFont(AdoptCF, CTFontCopyGraphicsFont(runFontData->platformData().ctFont(), 0));
- if (CFEqual(cgFont.get(), runCGFont.get()))
- break;
- runFontData = 0;
- }
- // If there is no matching font, look up by name in the font cache.
- if (!runFontData) {
- // Rather than using runFont as an NSFont and wrapping it in a FontPlatformData, go through
- // the font cache and ultimately through NSFontManager in order to get an NSFont with the right
- // NSFontRenderingMode.
- RetainPtr<CFStringRef> fontName(AdoptCF, CTFontCopyPostScriptName(runFont));
- if (CFEqual(fontName.get(), CFSTR("LastResort"))) {
- m_complexTextRuns.append(ComplexTextRun::create(m_font.primaryFont(), cp, stringLocation + runRange.location, runRange.length, m_run.ltr()));
- continue;
- }
- runFontData = fontCache()->getFontData(m_font.fontDescription(), fontName.get(), false, DoNotRetain).get();
- // Core Text may have used a font that is not known to NSFontManager. In that case, fall back on
- // using the font as returned, even though it may not have the best NSFontRenderingMode.
- if (!runFontData) {
- FontPlatformData runFontPlatformData((NSFont *)runFont, CTFontGetSize(runFont), m_font.fontDescription().usePrinterFont());
- runFontData = fontCache()->fontDataFromFontPlatformData(&runFontPlatformData, DoNotRetain).get();
- }
- }
- if (m_fallbackFonts && runFontData != m_font.primaryFont())
- m_fallbackFonts->add(runFontData);
- }
- }
- if (m_fallbackFonts && runFontData != m_font.primaryFont())
- m_fallbackFonts->add(fontData);
-
- m_complexTextRuns.append(ComplexTextRun::create(ctRun, runFontData, cp, stringLocation, length, runRange));
- }
-}
-
-} // namespace WebCore
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