diff options
Diffstat (limited to 'gfx/src/nsFont.h')
| -rw-r--r-- | gfx/src/nsFont.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/gfx/src/nsFont.h b/gfx/src/nsFont.h new file mode 100644 index 000000000..d21ce2593 --- /dev/null +++ b/gfx/src/nsFont.h @@ -0,0 +1,147 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef nsFont_h___ +#define nsFont_h___ + +#include <stdint.h> // for uint8_t, uint16_t +#include <sys/types.h> // for int16_t +#include "gfxFontFamilyList.h" +#include "gfxFontFeatures.h" +#include "mozilla/RefPtr.h" // for RefPtr +#include "nsCoord.h" // for nscoord +#include "nsStringFwd.h" // for nsSubstring +#include "nsString.h" // for nsString +#include "nsTArray.h" // for nsTArray + +struct gfxFontStyle; + +// XXX we need a method to enumerate all of the possible fonts on the +// system across family, weight, style, size, etc. But not here! + +// Enumerator callback function. Return false to stop +typedef bool (*nsFontFamilyEnumFunc)(const nsString& aFamily, bool aGeneric, void *aData); + +// IDs for generic fonts +// NOTE: 0, 1 are reserved for the special IDs of the default variable +// and fixed fonts in the presentation context, see nsPresContext.h +const uint8_t kGenericFont_NONE = 0x00; +// Special +const uint8_t kGenericFont_moz_variable = 0x00; // for the default variable width font +const uint8_t kGenericFont_moz_fixed = 0x01; // our special "use the user's fixed font" +// CSS +const uint8_t kGenericFont_serif = 0x02; +const uint8_t kGenericFont_sans_serif = 0x04; +const uint8_t kGenericFont_monospace = 0x08; +const uint8_t kGenericFont_cursive = 0x10; +const uint8_t kGenericFont_fantasy = 0x20; + +// Font structure. +struct nsFont { + + // list of font families, either named or generic + mozilla::FontFamilyList fontlist; + + // The style of font (normal, italic, oblique; see gfxFontConstants.h) + uint8_t style; + + // Force this font to not be considered a 'generic' font, even if + // the name is the same as a CSS generic font family. + bool systemFont; + + // Variant subproperties + uint8_t variantCaps; + uint8_t variantNumeric; + uint8_t variantPosition; + uint8_t variantWidth; + + uint16_t variantLigatures; + uint16_t variantEastAsian; + + // Some font-variant-alternates property values require + // font-specific settings defined via @font-feature-values rules. + // These are resolved *after* font matching occurs. + + // -- bitmask for both enumerated and functional propvals + uint16_t variantAlternates; + + // Smoothing - controls subpixel-antialiasing (currently OSX only) + uint8_t smoothing; + + // The weight of the font; see gfxFontConstants.h. + uint16_t weight; + + // The stretch of the font (the sum of various NS_FONT_STRETCH_* + // constants; see gfxFontConstants.h). + int16_t stretch; + + // Kerning + uint8_t kerning; + + // Synthesis setting, controls use of fake bolding/italics + uint8_t synthesis; + + // The logical size of the font, in nscoord units + nscoord size; + + // The aspect-value (ie., the ratio actualsize:actualxheight) that any + // actual physical font created from this font structure must have when + // rendering or measuring a string. A value of -1.0 means no adjustment + // needs to be done; otherwise the value must be nonnegative. + float sizeAdjust; + + // -- list of value tags for font-specific alternate features + nsTArray<gfxAlternateValue> alternateValues; + + // -- object used to look these up once the font is matched + RefPtr<gfxFontFeatureValueSet> featureValueLookup; + + // Font features from CSS font-feature-settings + nsTArray<gfxFontFeature> fontFeatureSettings; + + // Language system tag, to override document language; + // this is an OpenType "language system" tag represented as a 32-bit integer + // (see http://www.microsoft.com/typography/otspec/languagetags.htm). + nsString languageOverride; + + // initialize the font with a fontlist + nsFont(const mozilla::FontFamilyList& aFontlist, nscoord aSize); + + // initialize the font with a single generic + nsFont(mozilla::FontFamilyType aGenericType, nscoord aSize); + + // Make a copy of the given font + nsFont(const nsFont& aFont); + + // leave members uninitialized + nsFont(); + + ~nsFont(); + + bool operator==(const nsFont& aOther) const { + return Equals(aOther); + } + + bool operator!=(const nsFont& aOther) const { + return !Equals(aOther); + } + + bool Equals(const nsFont& aOther) const; + + nsFont& operator=(const nsFont& aOther); + + void CopyAlternates(const nsFont& aOther); + + // Add featureSettings into style + void AddFontFeaturesToStyle(gfxFontStyle *aStyle) const; + +protected: + void Init(); // helper method for initialization +}; + +#define NS_FONT_VARIANT_NORMAL 0 +#define NS_FONT_VARIANT_SMALL_CAPS 1 + +#endif /* nsFont_h___ */ |