1 /* 2 * Copyright 2011, The Android Open Source Project 3 * Copyright 2011, Google Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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 copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef HarfbuzzSkia_h 28 #define HarfbuzzSkia_h 29 30 #include "SkScalar.h" 31 #include "SkTypeface.h" 32 #include "SkPaint.h" 33 34 extern "C" { 35 #include "harfbuzz-shaper.h" 36 } 37 38 namespace android { 39 40 static inline float HBFixedToFloat(HB_Fixed v) { 41 // Harfbuzz uses 26.6 fixed point values for pixel offsets 42 return v * (1.0f / 64); 43 } 44 45 static inline HB_Fixed SkScalarToHBFixed(SkScalar value) { 46 // HB_Fixed is a 26.6 fixed point format. 47 return SkScalarToFloat(value) * 64.0f; 48 } 49 50 typedef struct { 51 SkTypeface* typeFace; 52 SkScalar textSize; 53 SkScalar textSkewX; 54 SkScalar textScaleX; 55 uint32_t flags; 56 SkPaint::Hinting hinting; 57 } FontData; 58 59 HB_Error harfbuzzSkiaGetTable(void* voidface, const HB_Tag, HB_Byte* buffer, HB_UInt* len); 60 extern const HB_FontClass harfbuzzSkiaClass; 61 62 } // namespace android 63 64 #endif 65
