| /* |
| * Copyright (C) 2011 Brent Fulgham |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #include "config.h" |
| #include "platform/fonts/FontPlatformData.h" |
| |
| #include "SkEndian.h" |
| #include "SkTypeface.h" |
| #include "platform/fonts/FontCache.h" |
| #include "platform/fonts/shaping/HarfBuzzFace.h" |
| #include "wtf/HashMap.h" |
| #include "wtf/text/StringHash.h" |
| #include "wtf/text/WTFString.h" |
| |
| #if OS(MACOSX) |
| #include "third_party/skia/include/ports/SkTypeface_mac.h" |
| #endif |
| |
| using namespace std; |
| |
| namespace blink { |
| |
| FontPlatformData::FontPlatformData(WTF::HashTableDeletedValueType) |
| : m_typeface(nullptr) |
| #if !OS(WIN) |
| , m_family(CString()) |
| #endif |
| , m_textSize(0) |
| , m_syntheticBold(false) |
| , m_syntheticItalic(false) |
| , m_orientation(Horizontal) |
| #if OS(MACOSX) |
| , m_isColorBitmapFont(false) |
| , m_isCompositeFontReference(false) |
| #endif |
| , m_widthVariant(RegularWidth) |
| #if OS(MACOSX) |
| , m_font(nullptr) |
| #else |
| , m_style(FontRenderStyle()) |
| #endif |
| , m_isHashTableDeletedValue(true) |
| #if OS(WIN) |
| , m_paintTextFlags(0) |
| , m_useSubpixelPositioning(false) |
| , m_minSizeForAntiAlias(0) |
| , m_minSizeForSubpixel(0) |
| #endif |
| { |
| } |
| |
| FontPlatformData::FontPlatformData() |
| : m_typeface(nullptr) |
| #if !OS(WIN) |
| , m_family(CString()) |
| #endif |
| , m_textSize(0) |
| , m_syntheticBold(false) |
| , m_syntheticItalic(false) |
| , m_orientation(Horizontal) |
| #if OS(MACOSX) |
| , m_isColorBitmapFont(false) |
| , m_isCompositeFontReference(false) |
| #endif |
| , m_widthVariant(RegularWidth) |
| #if OS(MACOSX) |
| , m_font(nullptr) |
| #else |
| , m_style(FontRenderStyle()) |
| #endif |
| , m_isHashTableDeletedValue(false) |
| #if OS(WIN) |
| , m_paintTextFlags(0) |
| , m_useSubpixelPositioning(false) |
| , m_minSizeForAntiAlias(0) |
| , m_minSizeForSubpixel(0) |
| #endif |
| { |
| } |
| |
| FontPlatformData::FontPlatformData(float size, bool syntheticBold, bool syntheticItalic, FontOrientation orientation, FontWidthVariant widthVariant) |
| : m_typeface(nullptr) |
| #if !OS(WIN) |
| , m_family(CString()) |
| #endif |
| , m_textSize(size) |
| , m_syntheticBold(syntheticBold) |
| , m_syntheticItalic(syntheticItalic) |
| , m_orientation(orientation) |
| #if OS(MACOSX) |
| , m_isColorBitmapFont(false) |
| , m_isCompositeFontReference(false) |
| #endif |
| , m_widthVariant(widthVariant) |
| #if OS(MACOSX) |
| , m_font(nullptr) |
| #else |
| , m_style(FontRenderStyle()) |
| #endif |
| , m_isHashTableDeletedValue(false) |
| #if OS(WIN) |
| , m_paintTextFlags(0) |
| , m_useSubpixelPositioning(false) |
| , m_minSizeForAntiAlias(0) |
| , m_minSizeForSubpixel(0) |
| #endif |
| { |
| } |
| |
| FontPlatformData::FontPlatformData(const FontPlatformData& source) |
| : m_typeface(source.m_typeface) |
| #if !OS(WIN) |
| , m_family(source.m_family) |
| #endif |
| , m_textSize(source.m_textSize) |
| , m_syntheticBold(source.m_syntheticBold) |
| , m_syntheticItalic(source.m_syntheticItalic) |
| , m_orientation(source.m_orientation) |
| #if OS(MACOSX) |
| , m_isColorBitmapFont(source.m_isColorBitmapFont) |
| , m_isCompositeFontReference(source.m_isCompositeFontReference) |
| #endif |
| , m_widthVariant(source.m_widthVariant) |
| #if !OS(MACOSX) |
| , m_style(source.m_style) |
| #endif |
| , m_harfBuzzFace(nullptr) |
| , m_isHashTableDeletedValue(false) |
| #if OS(WIN) |
| , m_paintTextFlags(source.m_paintTextFlags) |
| , m_useSubpixelPositioning(source.m_useSubpixelPositioning) |
| , m_minSizeForAntiAlias(source.m_minSizeForAntiAlias) |
| , m_minSizeForSubpixel(source.m_minSizeForSubpixel) |
| #endif |
| { |
| #if OS(MACOSX) |
| platformDataInit(source); |
| #endif |
| } |
| |
| FontPlatformData::FontPlatformData(const FontPlatformData& src, float textSize) |
| : m_typeface(src.m_typeface) |
| #if !OS(WIN) |
| , m_family(src.m_family) |
| #endif |
| , m_textSize(textSize) |
| , m_syntheticBold(src.m_syntheticBold) |
| , m_syntheticItalic(src.m_syntheticItalic) |
| , m_orientation(src.m_orientation) |
| #if OS(MACOSX) |
| , m_isColorBitmapFont(src.m_isColorBitmapFont) |
| , m_isCompositeFontReference(src.m_isCompositeFontReference) |
| #endif |
| , m_widthVariant(RegularWidth) |
| #if !OS(MACOSX) |
| , m_style(src.m_style) |
| #endif |
| , m_harfBuzzFace(nullptr) |
| , m_isHashTableDeletedValue(false) |
| #if OS(WIN) |
| , m_paintTextFlags(src.m_paintTextFlags) |
| , m_useSubpixelPositioning(src.m_useSubpixelPositioning) |
| , m_minSizeForAntiAlias(src.m_minSizeForAntiAlias) |
| , m_minSizeForSubpixel(src.m_minSizeForSubpixel) |
| #endif |
| { |
| #if OS(MACOSX) |
| platformDataInit(src); |
| #else |
| querySystemForRenderStyle(FontDescription::subpixelPositioning()); |
| #endif |
| } |
| |
| #if OS(MACOSX) |
| FontPlatformData::FontPlatformData(CGFontRef cgFont, PassRefPtr<SkTypeface> tf, float size, bool syntheticBold, bool syntheticItalic, FontOrientation orientation, FontWidthVariant widthVariant) |
| : m_typeface(tf) |
| , m_family(CString()) |
| , m_textSize(size) |
| , m_syntheticBold(syntheticBold) |
| , m_syntheticItalic(syntheticItalic) |
| , m_orientation(orientation) |
| , m_isColorBitmapFont(false) |
| , m_isCompositeFontReference(false) |
| , m_widthVariant(widthVariant) |
| , m_font(nullptr) |
| , m_cgFont(cgFont) |
| , m_isHashTableDeletedValue(false) |
| { |
| } |
| |
| #else |
| |
| FontPlatformData::FontPlatformData(PassRefPtr<SkTypeface> tf, const char* family, float textSize, bool syntheticBold, bool syntheticItalic, FontOrientation orientation, bool subpixelTextPosition) |
| : m_typeface(tf) |
| #if !OS(WIN) |
| , m_family(family) |
| #endif |
| , m_textSize(textSize) |
| , m_syntheticBold(syntheticBold) |
| , m_syntheticItalic(syntheticItalic) |
| , m_orientation(orientation) |
| , m_widthVariant(RegularWidth) |
| , m_isHashTableDeletedValue(false) |
| #if OS(WIN) |
| , m_paintTextFlags(0) |
| , m_useSubpixelPositioning(subpixelTextPosition) |
| , m_minSizeForAntiAlias(0) |
| , m_minSizeForSubpixel(0) |
| #endif |
| { |
| querySystemForRenderStyle(subpixelTextPosition); |
| } |
| |
| #endif |
| |
| FontPlatformData::~FontPlatformData() |
| { |
| #if OS(MACOSX) |
| if (m_font) |
| CFRelease(m_font); |
| #endif |
| } |
| |
| const FontPlatformData& FontPlatformData::operator=(const FontPlatformData& other) |
| { |
| // Check for self-assignment. |
| if (this == &other) |
| return *this; |
| |
| m_typeface = other.m_typeface; |
| #if !OS(WIN) |
| m_family = other.m_family; |
| #endif |
| m_textSize = other.m_textSize; |
| m_syntheticBold = other.m_syntheticBold; |
| m_syntheticItalic = other.m_syntheticItalic; |
| m_harfBuzzFace = nullptr; |
| m_orientation = other.m_orientation; |
| m_widthVariant = other.m_widthVariant; |
| #if OS(MACOSX) |
| m_isColorBitmapFont = other.m_isColorBitmapFont; |
| m_isCompositeFontReference = other.m_isCompositeFontReference; |
| #else |
| m_style = other.m_style; |
| #endif |
| m_widthVariant = other.m_widthVariant; |
| |
| #if OS(WIN) |
| m_paintTextFlags = 0; |
| m_minSizeForAntiAlias = other.m_minSizeForAntiAlias; |
| m_minSizeForSubpixel = other.m_minSizeForSubpixel; |
| m_useSubpixelPositioning = other.m_useSubpixelPositioning; |
| #endif |
| |
| #if OS(MACOSX) |
| return platformDataAssign(other); |
| #else |
| return *this; |
| #endif |
| } |
| |
| bool FontPlatformData::operator==(const FontPlatformData& a) const |
| { |
| // If either of the typeface pointers are null then we test for pointer |
| // equality. Otherwise, we call SkTypeface::Equal on the valid pointers. |
| bool typefacesEqual = false; |
| #if !OS(MACOSX) |
| if (!m_typeface || !a.m_typeface) |
| typefacesEqual = m_typeface == a.m_typeface; |
| else |
| typefacesEqual = SkTypeface::Equal(m_typeface.get(), a.m_typeface.get()); |
| #else |
| if (m_font || a.m_font) |
| typefacesEqual = m_font == a.m_font; |
| else |
| typefacesEqual = m_cgFont == a.m_cgFont; |
| #endif |
| |
| return typefacesEqual |
| && m_textSize == a.m_textSize |
| && m_isHashTableDeletedValue == a.m_isHashTableDeletedValue |
| && m_syntheticBold == a.m_syntheticBold |
| && m_syntheticItalic == a.m_syntheticItalic |
| && m_orientation == a.m_orientation |
| #if !OS(MACOSX) |
| && m_style == a.m_style |
| #else |
| && m_isColorBitmapFont == a.m_isColorBitmapFont |
| && m_isCompositeFontReference == a.m_isCompositeFontReference |
| #endif |
| && m_widthVariant == a.m_widthVariant; |
| } |
| |
| SkFontID FontPlatformData::uniqueID() const |
| { |
| return typeface()->uniqueID(); |
| } |
| |
| String FontPlatformData::fontFamilyName() const |
| { |
| ASSERT(this->typeface()); |
| SkTypeface::LocalizedStrings* fontFamilyIterator = this->typeface()->createFamilyNameIterator(); |
| SkTypeface::LocalizedString localizedString; |
| while (fontFamilyIterator->next(&localizedString) && !localizedString.fString.size()) { } |
| fontFamilyIterator->unref(); |
| return String(localizedString.fString.c_str()); |
| } |
| |
| bool FontPlatformData::isFixedPitch() const |
| { |
| return typeface() && typeface()->isFixedPitch(); |
| } |
| |
| SkTypeface* FontPlatformData::typeface() const |
| { |
| #if OS(MACOSX) |
| if (!m_typeface) |
| m_typeface = adoptRef(SkCreateTypefaceFromCTFont(ctFont())); |
| #endif |
| return m_typeface.get(); |
| } |
| |
| HarfBuzzFace* FontPlatformData::harfBuzzFace() const |
| { |
| if (!m_harfBuzzFace) |
| m_harfBuzzFace = HarfBuzzFace::create(const_cast<FontPlatformData*>(this), uniqueID()); |
| |
| return m_harfBuzzFace.get(); |
| } |
| |
| #if !OS(MACOSX) |
| unsigned FontPlatformData::hash() const |
| { |
| unsigned h = SkTypeface::UniqueID(m_typeface.get()); |
| h ^= 0x01010101 * ((static_cast<int>(m_isHashTableDeletedValue) << 3) | (static_cast<int>(m_orientation) << 2) | (static_cast<int>(m_syntheticBold) << 1) | static_cast<int>(m_syntheticItalic)); |
| |
| // This memcpy is to avoid a reinterpret_cast that breaks strict-aliasing |
| // rules. Memcpy is generally optimized enough so that performance doesn't |
| // matter here. |
| uint32_t textSizeBytes; |
| memcpy(&textSizeBytes, &m_textSize, sizeof(uint32_t)); |
| h ^= textSizeBytes; |
| |
| return h; |
| } |
| |
| bool FontPlatformData::fontContainsCharacter(UChar32 character) |
| { |
| SkPaint paint; |
| setupPaint(&paint); |
| paint.setTextEncoding(SkPaint::kUTF32_TextEncoding); |
| |
| uint16_t glyph; |
| paint.textToGlyphs(&character, sizeof(character), &glyph); |
| return glyph; |
| } |
| |
| #endif |
| |
| #if ENABLE(OPENTYPE_VERTICAL) |
| PassRefPtr<OpenTypeVerticalData> FontPlatformData::verticalData() const |
| { |
| return FontCache::fontCache()->getVerticalData(typeface()->uniqueID(), *this); |
| } |
| |
| PassRefPtr<SharedBuffer> FontPlatformData::openTypeTable(uint32_t table) const |
| { |
| RefPtr<SharedBuffer> buffer; |
| |
| SkFontTableTag tag = SkEndianSwap32(table); |
| const size_t tableSize = m_typeface->getTableSize(tag); |
| if (tableSize) { |
| Vector<char> tableBuffer(tableSize); |
| m_typeface->getTableData(tag, 0, tableSize, &tableBuffer[0]); |
| buffer = SharedBuffer::adoptVector(tableBuffer); |
| } |
| return buffer.release(); |
| } |
| #endif |
| |
| } // namespace blink |