mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-11 02:56:06 +00:00
127 lines
3.8 KiB
C++
127 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
|
|
/* 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 GFX_FONT_FEATURES_H
|
|
#define GFX_FONT_FEATURES_H
|
|
|
|
#include "nsTHashtable.h"
|
|
#include "nsTArray.h"
|
|
#include "nsString.h"
|
|
|
|
// An OpenType feature tag and value pair
|
|
struct gfxFontFeature {
|
|
uint32_t mTag; // see http://www.microsoft.com/typography/otspec/featuretags.htm
|
|
uint32_t mValue; // 0 = off, 1 = on, larger values may be used as parameters
|
|
// to features that select among multiple alternatives
|
|
};
|
|
|
|
inline bool
|
|
operator<(const gfxFontFeature& a, const gfxFontFeature& b)
|
|
{
|
|
return (a.mTag < b.mTag) || ((a.mTag == b.mTag) && (a.mValue < b.mValue));
|
|
}
|
|
|
|
inline bool
|
|
operator==(const gfxFontFeature& a, const gfxFontFeature& b)
|
|
{
|
|
return (a.mTag == b.mTag) && (a.mValue == b.mValue);
|
|
}
|
|
|
|
struct gfxAlternateValue {
|
|
uint32_t alternate; // constants in gfxFontConstants.h
|
|
nsString value; // string value to be looked up
|
|
};
|
|
|
|
inline bool
|
|
operator<(const gfxAlternateValue& a, const gfxAlternateValue& b)
|
|
{
|
|
return (a.alternate < b.alternate) ||
|
|
((a.alternate == b.alternate) && (a.value < b.value));
|
|
}
|
|
|
|
inline bool
|
|
operator==(const gfxAlternateValue& a, const gfxAlternateValue& b)
|
|
{
|
|
return (a.alternate == b.alternate) && (a.value == b.value);
|
|
}
|
|
|
|
class gfxFontFeatureValueSet final {
|
|
public:
|
|
NS_INLINE_DECL_REFCOUNTING(gfxFontFeatureValueSet)
|
|
|
|
gfxFontFeatureValueSet();
|
|
|
|
struct ValueList {
|
|
ValueList(const nsAString& aName, const nsTArray<uint32_t>& aSelectors)
|
|
: name(aName), featureSelectors(aSelectors)
|
|
{}
|
|
nsString name;
|
|
nsTArray<uint32_t> featureSelectors;
|
|
};
|
|
|
|
struct FeatureValues {
|
|
uint32_t alternate;
|
|
nsTArray<ValueList> valuelist;
|
|
};
|
|
|
|
// returns true if found, false otherwise
|
|
bool
|
|
GetFontFeatureValuesFor(const nsAString& aFamily,
|
|
uint32_t aVariantProperty,
|
|
const nsAString& aName,
|
|
nsTArray<uint32_t>& aValues);
|
|
void
|
|
AddFontFeatureValues(const nsAString& aFamily,
|
|
const nsTArray<gfxFontFeatureValueSet::FeatureValues>& aValues);
|
|
|
|
private:
|
|
// Private destructor, to discourage deletion outside of Release():
|
|
~gfxFontFeatureValueSet() {}
|
|
|
|
struct FeatureValueHashKey {
|
|
nsString mFamily;
|
|
uint32_t mPropVal;
|
|
nsString mName;
|
|
|
|
FeatureValueHashKey()
|
|
: mPropVal(0)
|
|
{ }
|
|
FeatureValueHashKey(const nsAString& aFamily,
|
|
uint32_t aPropVal,
|
|
const nsAString& aName)
|
|
: mFamily(aFamily), mPropVal(aPropVal), mName(aName)
|
|
{ }
|
|
FeatureValueHashKey(const FeatureValueHashKey& aKey)
|
|
: mFamily(aKey.mFamily), mPropVal(aKey.mPropVal), mName(aKey.mName)
|
|
{ }
|
|
};
|
|
|
|
class FeatureValueHashEntry : public PLDHashEntryHdr {
|
|
public:
|
|
typedef const FeatureValueHashKey &KeyType;
|
|
typedef const FeatureValueHashKey *KeyTypePointer;
|
|
|
|
explicit FeatureValueHashEntry(KeyTypePointer aKey) { }
|
|
FeatureValueHashEntry(const FeatureValueHashEntry& toCopy)
|
|
{
|
|
NS_ERROR("Should not be called");
|
|
}
|
|
~FeatureValueHashEntry() { }
|
|
|
|
bool KeyEquals(const KeyTypePointer aKey) const;
|
|
static KeyTypePointer KeyToPointer(KeyType aKey) { return &aKey; }
|
|
static PLDHashNumber HashKey(const KeyTypePointer aKey);
|
|
enum { ALLOW_MEMMOVE = true };
|
|
|
|
FeatureValueHashKey mKey;
|
|
nsTArray<uint32_t> mValues;
|
|
};
|
|
|
|
nsTHashtable<FeatureValueHashEntry> mFontFeatureValues;
|
|
};
|
|
|
|
#endif
|