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/*
* Copyright 2012 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkPaintOptionsAndroid_DEFINED
#define SkPaintOptionsAndroid_DEFINED
#include "SkTypes.h"
#include "SkString.h"
class SkFlattenableReadBuffer;
class SkFlattenableWriteBuffer;
/** \class SkLanguage
The SkLanguage class represents a human written language, and is used by
text draw operations to determine which glyph to draw when drawing
characters with variants (ie Han-derived characters).
*/
class SkLanguage {
public:
SkLanguage() { }
SkLanguage(const SkString& tag) : fTag(tag) { }
SkLanguage(const char* tag) : fTag(tag) { }
SkLanguage(const char* tag, size_t len) : fTag(tag, len) { }
SkLanguage(const SkLanguage& b) : fTag(b.fTag) { }
/** Gets a BCP 47 language identifier for this SkLanguage.
@return a BCP 47 language identifier representing this language
*/
const SkString& getTag() const { return fTag; }
/** Performs BCP 47 fallback to return an SkLanguage one step more general.
@return an SkLanguage one step more general
*/
SkLanguage getParent() const;
bool operator==(const SkLanguage& b) const {
return fTag == b.fTag;
}
bool operator!=(const SkLanguage& b) const {
return fTag != b.fTag;
}
SkLanguage& operator=(const SkLanguage& b) {
fTag = b.fTag;
return *this;
}
private:
//! BCP 47 language identifier
SkString fTag;
};
class SkPaintOptionsAndroid {
public:
SkPaintOptionsAndroid() {
fFontVariant = kDefault_Variant;
fUseFontFallbacks = false;
}
SkPaintOptionsAndroid& operator=(const SkPaintOptionsAndroid& b) {
fLanguage = b.fLanguage;
fFontVariant = b.fFontVariant;
fUseFontFallbacks = b.fUseFontFallbacks;
return *this;
}
bool operator==(const SkPaintOptionsAndroid& b) const {
return !(*this != b);
}
bool operator!=(const SkPaintOptionsAndroid& b) const {
return fLanguage != b.fLanguage ||
fFontVariant != b.fFontVariant ||
fUseFontFallbacks != b.fUseFontFallbacks;
}
void flatten(SkFlattenableWriteBuffer&) const;
void unflatten(SkFlattenableReadBuffer&);
/** Return the paint's language value used for drawing text.
@return the paint's language value used for drawing text.
*/
const SkLanguage& getLanguage() const { return fLanguage; }
/** Set the paint's language value used for drawing text.
@param language set the paint's language value for drawing text.
*/
void setLanguage(const SkLanguage& language) { fLanguage = language; }
void setLanguage(const char* languageTag) { fLanguage = SkLanguage(languageTag); }
enum FontVariant {
kDefault_Variant = 0x01,
kCompact_Variant = 0x02,
kElegant_Variant = 0x04,
kLast_Variant = kElegant_Variant,
};
/** Return the font variant
@return the font variant used by this paint object
*/
FontVariant getFontVariant() const { return fFontVariant; }
/** Set the font variant
@param fontVariant set the paint's font variant for choosing fonts
*/
void setFontVariant(FontVariant fontVariant) {
SkASSERT((unsigned)fontVariant <= kLast_Variant);
fFontVariant = fontVariant;
}
bool isUsingFontFallbacks() const { return fUseFontFallbacks; }
void setUseFontFallbacks(bool useFontFallbacks) {
fUseFontFallbacks = useFontFallbacks;
}
private:
SkLanguage fLanguage;
FontVariant fFontVariant;
bool fUseFontFallbacks;
};
#endif // #ifndef SkPaintOptionsAndroid_DEFINED
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