1 /* 2 * Copyright (c) 2009, Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef SkHarfBuzzFont_DEFINED 32 #define SkHarfBuzzFont_DEFINED 33 34 extern "C" { 35 #include "harfbuzz-shaper.h" 36 //#include "harfbuzz-unicode.h" 37 } 38 39 #include "SkTypes.h" 40 41 class SkPaint; 42 class SkTypeface; 43 44 class SkHarfBuzzFont { 45 public: 46 /** The subclass returns the typeface for this font, or NULL 47 */ 48 virtual SkTypeface* getTypeface() const = 0; 49 /** The subclass sets the text related attributes of the paint. 50 e.g. textSize, typeface, textSkewX, etc. 51 All of the attributes that could effect how the text is measured. 52 Color information (e.g. color, xfermode, shader, etc.) are not required. 53 */ 54 virtual void setupPaint(SkPaint*) const = 0; 55 56 /** Implementation of HB_GetFontTableFunc, using SkHarfBuzzFont* as 57 the first parameter. 58 */ 59 static HB_Error GetFontTableFunc(void* skharfbuzzfont, const HB_Tag tag, 60 HB_Byte* buffer, HB_UInt* len); 61 62 static const HB_FontClass& GetFontClass(); 63 }; 64 65 #endif 66 67
