| /* |
| * Copyright (C) 2014 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef SKY_ENGINE_PLATFORM_FONTS_CHARACTER_H_ |
| #define SKY_ENGINE_PLATFORM_FONTS_CHARACTER_H_ |
| |
| #include "sky/engine/platform/PlatformExport.h" |
| #include "sky/engine/platform/text/TextDirection.h" |
| #include "sky/engine/platform/text/TextPath.h" |
| #include "sky/engine/wtf/HashSet.h" |
| #include "sky/engine/wtf/text/WTFString.h" |
| #include "sky/engine/wtf/unicode/CharacterNames.h" |
| |
| namespace blink { |
| |
| class PLATFORM_EXPORT Character { |
| public: |
| static CodePath characterRangeCodePath(const LChar*, unsigned) { return SimplePath; } |
| static CodePath characterRangeCodePath(const UChar*, unsigned len); |
| |
| static bool isCJKIdeograph(UChar32); |
| static bool isCJKIdeographOrSymbol(UChar32); |
| |
| static unsigned expansionOpportunityCount(const LChar*, size_t length, TextDirection, bool& isAfterExpansion); |
| static unsigned expansionOpportunityCount(const UChar*, size_t length, TextDirection, bool& isAfterExpansion); |
| |
| static bool treatAsSpace(UChar c) { return c == ' ' || c == '\t' || c == '\n' || c == noBreakSpace; } |
| static bool treatAsZeroWidthSpace(UChar c) { return treatAsZeroWidthSpaceInComplexScript(c) || c == 0x200c || c == 0x200d; } |
| static bool treatAsZeroWidthSpaceInComplexScript(UChar c) { return c < 0x20 || (c >= 0x7F && c < 0xA0) || c == softHyphen || c == zeroWidthSpace || (c >= 0x200e && c <= 0x200f) || (c >= 0x202a && c <= 0x202e) || c == zeroWidthNoBreakSpace || c == objectReplacementCharacter; } |
| static bool canReceiveTextEmphasis(UChar32); |
| |
| static inline UChar normalizeSpaces(UChar character) |
| { |
| if (treatAsSpace(character)) |
| return space; |
| |
| if (treatAsZeroWidthSpace(character)) |
| return zeroWidthSpace; |
| |
| return character; |
| } |
| |
| static String normalizeSpaces(const LChar*, unsigned length); |
| static String normalizeSpaces(const UChar*, unsigned length); |
| |
| private: |
| Character(); |
| }; |
| |
| } // namespace blink |
| |
| #endif // SKY_ENGINE_PLATFORM_FONTS_CHARACTER_H_ |