1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/include/core/SkPaintOptionsAndroid.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,130 @@
1.4 +
1.5 +/*
1.6 + * Copyright 2012 The Android Open Source Project
1.7 + *
1.8 + * Use of this source code is governed by a BSD-style license that can be
1.9 + * found in the LICENSE file.
1.10 + */
1.11 +
1.12 +
1.13 +#ifndef SkPaintOptionsAndroid_DEFINED
1.14 +#define SkPaintOptionsAndroid_DEFINED
1.15 +
1.16 +#include "SkTypes.h"
1.17 +#include "SkString.h"
1.18 +
1.19 +class SkReadBuffer;
1.20 +class SkWriteBuffer;
1.21 +
1.22 +/** \class SkLanguage
1.23 +
1.24 + The SkLanguage class represents a human written language, and is used by
1.25 + text draw operations to determine which glyph to draw when drawing
1.26 + characters with variants (ie Han-derived characters).
1.27 +*/
1.28 +class SkLanguage {
1.29 +public:
1.30 + SkLanguage() { }
1.31 + SkLanguage(const SkString& tag) : fTag(tag) { }
1.32 + SkLanguage(const char* tag) : fTag(tag) { }
1.33 + SkLanguage(const char* tag, size_t len) : fTag(tag, len) { }
1.34 + SkLanguage(const SkLanguage& b) : fTag(b.fTag) { }
1.35 +
1.36 + /** Gets a BCP 47 language identifier for this SkLanguage.
1.37 + @return a BCP 47 language identifier representing this language
1.38 + */
1.39 + const SkString& getTag() const { return fTag; }
1.40 +
1.41 + /** Performs BCP 47 fallback to return an SkLanguage one step more general.
1.42 + @return an SkLanguage one step more general
1.43 + */
1.44 + SkLanguage getParent() const;
1.45 +
1.46 + bool operator==(const SkLanguage& b) const {
1.47 + return fTag == b.fTag;
1.48 + }
1.49 + bool operator!=(const SkLanguage& b) const {
1.50 + return fTag != b.fTag;
1.51 + }
1.52 + SkLanguage& operator=(const SkLanguage& b) {
1.53 + fTag = b.fTag;
1.54 + return *this;
1.55 + }
1.56 +
1.57 +private:
1.58 + //! BCP 47 language identifier
1.59 + SkString fTag;
1.60 +};
1.61 +
1.62 +class SkPaintOptionsAndroid {
1.63 +public:
1.64 + SkPaintOptionsAndroid() {
1.65 + fFontVariant = kDefault_Variant;
1.66 + fUseFontFallbacks = false;
1.67 + }
1.68 +
1.69 + SkPaintOptionsAndroid& operator=(const SkPaintOptionsAndroid& b) {
1.70 + fLanguage = b.fLanguage;
1.71 + fFontVariant = b.fFontVariant;
1.72 + fUseFontFallbacks = b.fUseFontFallbacks;
1.73 + return *this;
1.74 + }
1.75 +
1.76 + bool operator==(const SkPaintOptionsAndroid& b) const {
1.77 + return !(*this != b);
1.78 + }
1.79 +
1.80 + bool operator!=(const SkPaintOptionsAndroid& b) const {
1.81 + return fLanguage != b.fLanguage ||
1.82 + fFontVariant != b.fFontVariant ||
1.83 + fUseFontFallbacks != b.fUseFontFallbacks;
1.84 + }
1.85 +
1.86 + void flatten(SkWriteBuffer&) const;
1.87 + void unflatten(SkReadBuffer&);
1.88 +
1.89 + /** Return the paint's language value used for drawing text.
1.90 + @return the paint's language value used for drawing text.
1.91 + */
1.92 + const SkLanguage& getLanguage() const { return fLanguage; }
1.93 +
1.94 + /** Set the paint's language value used for drawing text.
1.95 + @param language set the paint's language value for drawing text.
1.96 + */
1.97 + void setLanguage(const SkLanguage& language) { fLanguage = language; }
1.98 + void setLanguage(const char* languageTag) { fLanguage = SkLanguage(languageTag); }
1.99 +
1.100 +
1.101 + enum FontVariant {
1.102 + kDefault_Variant = 0x01,
1.103 + kCompact_Variant = 0x02,
1.104 + kElegant_Variant = 0x04,
1.105 + kLast_Variant = kElegant_Variant,
1.106 + };
1.107 +
1.108 + /** Return the font variant
1.109 + @return the font variant used by this paint object
1.110 + */
1.111 + FontVariant getFontVariant() const { return fFontVariant; }
1.112 +
1.113 + /** Set the font variant
1.114 + @param fontVariant set the paint's font variant for choosing fonts
1.115 + */
1.116 + void setFontVariant(FontVariant fontVariant) {
1.117 + SkASSERT((unsigned)fontVariant <= kLast_Variant);
1.118 + fFontVariant = fontVariant;
1.119 + }
1.120 +
1.121 + bool isUsingFontFallbacks() const { return fUseFontFallbacks; }
1.122 +
1.123 + void setUseFontFallbacks(bool useFontFallbacks) {
1.124 + fUseFontFallbacks = useFontFallbacks;
1.125 + }
1.126 +
1.127 +private:
1.128 + SkLanguage fLanguage;
1.129 + FontVariant fFontVariant;
1.130 + bool fUseFontFallbacks;
1.131 +};
1.132 +
1.133 +#endif // #ifndef SkPaintOptionsAndroid_DEFINED
