1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_HWUI_FONT_UTIL_H 18 #define ANDROID_HWUI_FONT_UTIL_H 19 20 #include <SkUtils.h> 21 22 #include "Properties.h" 23 24 /////////////////////////////////////////////////////////////////////////////// 25 // Defines 26 /////////////////////////////////////////////////////////////////////////////// 27 28 #define DEFAULT_TEXT_SMALL_CACHE_WIDTH 1024 29 #define DEFAULT_TEXT_SMALL_CACHE_HEIGHT 512 30 #define DEFAULT_TEXT_LARGE_CACHE_WIDTH 2048 31 #define DEFAULT_TEXT_LARGE_CACHE_HEIGHT 512 32 33 #define TEXTURE_BORDER_SIZE 1 34 #if TEXTURE_BORDER_SIZE != 1 35 # error TEXTURE_BORDER_SIZE other than 1 is not currently supported 36 #endif 37 38 #define CACHE_BLOCK_ROUNDING_SIZE 4 39 40 #if RENDER_TEXT_AS_GLYPHS 41 typedef uint16_t glyph_t; 42 #define TO_GLYPH(g) g 43 #define GET_METRICS(cache, glyph) cache->getGlyphIDMetrics(glyph) 44 #define GET_GLYPH(text) nextGlyph((const uint16_t**) &text) 45 #define IS_END_OF_STRING(glyph) false 46 47 static glyph_t nextGlyph(const uint16_t** srcPtr) { 48 const uint16_t* src = *srcPtr; 49 glyph_t g = *src++; 50 *srcPtr = src; 51 return g; 52 } 53 #else 54 typedef SkUnichar glyph_t; 55 #define TO_GLYPH(g) ((SkUnichar) g) 56 #define GET_METRICS(cache, glyph) cache->getUnicharMetrics(glyph) 57 #define GET_GLYPH(text) SkUTF16_NextUnichar((const uint16_t**) &text) 58 #define IS_END_OF_STRING(glyph) glyph < 0 59 #endif 60 61 #define AUTO_KERN(prev, next) (((next) - (prev) + 32) >> 6 << 16) 62 63 #endif // ANDROID_HWUI_FONT_UTIL_H 64
