/* * Copyright (C) 2000 Lars Knoll (knoll@kde.org) * (C) 2000 Antti Koivisto (koivisto@kde.org) * (C) 2000 Dirk Mueller (mueller@kde.org) * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. * Copyright (C) 2007 Nicholas Shanks * * 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.LIother.m_ If not, write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USm_ * */ #ifndef FontDescription_h #define FontDescription_h #include "FontFamilyNames.h" #include "platform/fonts/FontCacheKey.h" #include "platform/fonts/FontFamily.h" #include "platform/fonts/FontFeatureSettings.h" #include "platform/fonts/FontOrientation.h" #include "platform/fonts/FontSmoothingMode.h" #include "platform/fonts/FontTraitsMask.h" #include "platform/fonts/FontWidthVariant.h" #include "platform/fonts/TextRenderingMode.h" #include "platform/text/NonCJKGlyphOrientation.h" #include "wtf/MathExtras.h" #include "wtf/RefPtr.h" namespace WebCore { enum FontWeight { FontWeight100, FontWeight200, FontWeight300, FontWeight400, FontWeight500, FontWeight600, FontWeight700, FontWeight800, FontWeight900, FontWeightNormal = FontWeight400, FontWeightBold = FontWeight700 }; enum FontItalic { FontItalicOff = 0, FontItalicOn = 1 }; enum FontSmallCaps { FontSmallCapsOff = 0, FontSmallCapsOn = 1 }; class PLATFORM_EXPORT FontDescription { public: enum GenericFamilyType { NoFamily, StandardFamily, SerifFamily, SansSerifFamily, MonospaceFamily, CursiveFamily, FantasyFamily, PictographFamily }; enum Kerning { AutoKerning, NormalKerning, NoneKerning }; enum LigaturesState { NormalLigaturesState, DisabledLigaturesState, EnabledLigaturesState }; FontDescription() : m_specifiedSize(0) , m_computedSize(0) , m_orientation(Horizontal) , m_nonCJKGlyphOrientation(NonCJKGlyphOrientationVerticalRight) , m_widthVariant(RegularWidth) , m_italic(FontItalicOff) , m_smallCaps(FontSmallCapsOff) , m_isAbsoluteSize(false) , m_weight(FontWeightNormal) , m_genericFamily(NoFamily) , m_usePrinterFont(false) , m_kerning(AutoKerning) , m_commonLigaturesState(NormalLigaturesState) , m_discretionaryLigaturesState(NormalLigaturesState) , m_historicalLigaturesState(NormalLigaturesState) , m_keywordSize(0) , m_fontSmoothing(AutoSmoothing) , m_textRendering(AutoTextRendering) , m_isSpecifiedFont(false) , m_script(USCRIPT_COMMON) , m_syntheticBold(false) , m_syntheticItalic(false) , m_subpixelTextPosition(s_useSubpixelTextPositioning) { } bool operator==(const FontDescription&) const; bool operator!=(const FontDescription& other) const { return !(*this == other); } const FontFamily& family() const { return m_familyList; } FontFamily& firstFamily() { return m_familyList; } float specifiedSize() const { return m_specifiedSize; } float computedSize() const { return m_computedSize; } FontItalic italic() const { return static_cast(m_italic); } int computedPixelSize() const { return int(m_computedSize + 0.5f); } FontSmallCaps smallCaps() const { return static_cast(m_smallCaps); } bool isAbsoluteSize() const { return m_isAbsoluteSize; } FontWeight weight() const { return static_cast(m_weight); } FontWeight lighterWeight() const; FontWeight bolderWeight() const; GenericFamilyType genericFamily() const { return static_cast(m_genericFamily); } bool usePrinterFont() const { return m_usePrinterFont; } // only use fixed default size when there is only one font family, and that family is "monospace" bool useFixedDefaultSize() const { return genericFamily() == MonospaceFamily && !family().next() && family().family() == FontFamilyNames::webkit_monospace; } Kerning kerning() const { return static_cast(m_kerning); } LigaturesState commonLigaturesState() const { return static_cast(m_commonLigaturesState); } LigaturesState discretionaryLigaturesState() const { return static_cast(m_discretionaryLigaturesState); } LigaturesState historicalLigaturesState() const { return static_cast(m_historicalLigaturesState); } unsigned keywordSize() const { return m_keywordSize; } FontSmoothingMode fontSmoothing() const { return static_cast(m_fontSmoothing); } TextRenderingMode textRenderingMode() const { return static_cast(m_textRendering); } UScriptCode script() const { return static_cast(m_script); } bool isSyntheticBold() const { return m_syntheticBold; } bool isSyntheticItalic() const { return m_syntheticItalic; } bool useSubpixelPositioning() const { return m_subpixelTextPosition; } FontTraitsMask traitsMask() const; bool isSpecifiedFont() const { return m_isSpecifiedFont; } FontOrientation orientation() const { return static_cast(m_orientation); } NonCJKGlyphOrientation nonCJKGlyphOrientation() const { return static_cast(m_nonCJKGlyphOrientation); } FontWidthVariant widthVariant() const { return static_cast(m_widthVariant); } FontFeatureSettings* featureSettings() const { return m_featureSettings.get(); } FontDescription makeNormalFeatureSettings() const; float effectiveFontSize() const; // Returns either the computedSize or the computedPixelSize FontCacheKey cacheKey(const AtomicString& familyName, FontTraitsMask desiredTraits = static_cast(0)) const; void setFamily(const FontFamily& family) { m_familyList = family; } void setComputedSize(float s) { m_computedSize = clampToFloat(s); } void setSpecifiedSize(float s) { m_specifiedSize = clampToFloat(s); } void setItalic(FontItalic i) { m_italic = i; } void setItalic(bool i) { setItalic(i ? FontItalicOn : FontItalicOff); } void setSmallCaps(FontSmallCaps c) { m_smallCaps = c; } void setSmallCaps(bool c) { setSmallCaps(c ? FontSmallCapsOn : FontSmallCapsOff); } void setIsAbsoluteSize(bool s) { m_isAbsoluteSize = s; } void setWeight(FontWeight w) { m_weight = w; } void setGenericFamily(GenericFamilyType genericFamily) { m_genericFamily = genericFamily; } #if OS(MACOSX) void setUsePrinterFont(bool) { } #else void setUsePrinterFont(bool p) { m_usePrinterFont = p; } #endif void setKerning(Kerning kerning) { m_kerning = kerning; } void setCommonLigaturesState(LigaturesState commonLigaturesState) { m_commonLigaturesState = commonLigaturesState; } void setDiscretionaryLigaturesState(LigaturesState discretionaryLigaturesState) { m_discretionaryLigaturesState = discretionaryLigaturesState; } void setHistoricalLigaturesState(LigaturesState historicalLigaturesState) { m_historicalLigaturesState = historicalLigaturesState; } void setKeywordSize(unsigned s) { m_keywordSize = s; } void setFontSmoothing(FontSmoothingMode smoothing) { m_fontSmoothing = smoothing; } void setTextRenderingMode(TextRenderingMode rendering) { m_textRendering = rendering; } void setIsSpecifiedFont(bool isSpecifiedFont) { m_isSpecifiedFont = isSpecifiedFont; } void setOrientation(FontOrientation orientation) { m_orientation = orientation; } void setNonCJKGlyphOrientation(NonCJKGlyphOrientation orientation) { m_nonCJKGlyphOrientation = orientation; } void setWidthVariant(FontWidthVariant widthVariant) { m_widthVariant = widthVariant; } void setScript(UScriptCode s) { m_script = s; } void setSyntheticBold(bool syntheticBold) { m_syntheticBold = syntheticBold; } void setSyntheticItalic(bool syntheticItalic) { m_syntheticItalic = syntheticItalic; } void setFeatureSettings(PassRefPtr settings) { m_featureSettings = settings; } void setTraitsMask(FontTraitsMask); static void setSubpixelPositioning(bool b) { s_useSubpixelTextPositioning = b; } static bool subpixelPositioning() { return s_useSubpixelTextPositioning; } private: FontFamily m_familyList; // The list of font families to be used. RefPtr m_featureSettings; float m_specifiedSize; // Specified CSS value. Independent of rendering issues such as integer // rounding, minimum font sizes, and zooming. float m_computedSize; // Computed size adjusted for the minimum font size and the zoom factor. unsigned m_orientation : 1; // FontOrientation - Whether the font is rendering on a horizontal line or a vertical line. unsigned m_nonCJKGlyphOrientation : 1; // NonCJKGlyphOrientation - Only used by vertical text. Determines the default orientation for non-ideograph glyphs. unsigned m_widthVariant : 2; // FontWidthVariant unsigned m_italic : 1; // FontItalic unsigned m_smallCaps : 1; // FontSmallCaps unsigned m_isAbsoluteSize : 1; // Whether or not CSS specified an explicit size // (logical sizes like "medium" don't count). unsigned m_weight : 8; // FontWeight unsigned m_genericFamily : 3; // GenericFamilyType unsigned m_usePrinterFont : 1; unsigned m_kerning : 2; // Kerning unsigned m_commonLigaturesState : 2; unsigned m_discretionaryLigaturesState : 2; unsigned m_historicalLigaturesState : 2; unsigned m_keywordSize : 4; // We cache whether or not a font is currently represented by a CSS keyword (e.g., medium). If so, // then we can accurately translate across different generic families to adjust for different preference settings // (e.g., 13px monospace vs. 16px everything else). Sizes are 1-8 (like the HTML size values for ). unsigned m_fontSmoothing : 2; // FontSmoothingMode unsigned m_textRendering : 2; // TextRenderingMode unsigned m_isSpecifiedFont : 1; // True if a web page specifies a non-generic font family as the first font family. unsigned m_script : 7; // Used to help choose an appropriate font for generic font families. unsigned m_syntheticBold : 1; unsigned m_syntheticItalic : 1; unsigned m_subpixelTextPosition : 1; static bool s_useSubpixelTextPositioning; }; inline bool FontDescription::operator==(const FontDescription& other) const { return m_familyList == other.m_familyList && m_specifiedSize == other.m_specifiedSize && m_computedSize == other.m_computedSize && m_italic == other.m_italic && m_smallCaps == other.m_smallCaps && m_isAbsoluteSize == other.m_isAbsoluteSize && m_weight == other.m_weight && m_genericFamily == other.m_genericFamily && m_usePrinterFont == other.m_usePrinterFont && m_kerning == other.m_kerning && m_commonLigaturesState == other.m_commonLigaturesState && m_discretionaryLigaturesState == other.m_discretionaryLigaturesState && m_historicalLigaturesState == other.m_historicalLigaturesState && m_keywordSize == other.m_keywordSize && m_fontSmoothing == other.m_fontSmoothing && m_textRendering == other.m_textRendering && m_isSpecifiedFont == other.m_isSpecifiedFont && m_orientation == other.m_orientation && m_nonCJKGlyphOrientation == other.m_nonCJKGlyphOrientation && m_widthVariant == other.m_widthVariant && m_script == other.m_script && m_syntheticBold == other.m_syntheticBold && m_syntheticItalic == other.m_syntheticItalic && m_featureSettings == other.m_featureSettings && m_subpixelTextPosition == other.m_subpixelTextPosition; } } #endif