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