147 lines
4.7 KiB
C++
147 lines
4.7 KiB
C++
/* -*- 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 "nsAutoPtr.h" // for nsRefPtr
|
|
#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;
|
|
|
|
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___ */
|