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+/* -*- 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___ */