1 2/* 3 * Copyright 2006 The Android Open Source Project 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10#include "SkGraphics.h" 11 12#include "Sk64.h" 13#include "SkBlitter.h" 14#include "SkCanvas.h" 15#include "SkFloat.h" 16#include "SkGeometry.h" 17#include "SkMath.h" 18#include "SkMatrix.h" 19#include "SkPath.h" 20#include "SkPathEffect.h" 21#include "SkPixelRef.h" 22#include "SkRandom.h" 23#include "SkRefCnt.h" 24#include "SkScalerContext.h" 25#include "SkShader.h" 26#include "SkStream.h" 27#include "SkTSearch.h" 28#include "SkTime.h" 29#include "SkUtils.h" 30#include "SkXfermode.h" 31 32void SkGraphics::GetVersion(int32_t* major, int32_t* minor, int32_t* patch) { 33 if (major) { 34 *major = SKIA_VERSION_MAJOR; 35 } 36 if (minor) { 37 *minor = SKIA_VERSION_MINOR; 38 } 39 if (patch) { 40 *patch = SKIA_VERSION_PATCH; 41 } 42} 43 44#define typesizeline(type) { #type , sizeof(type) } 45 46#ifdef BUILD_EMBOSS_TABLE 47 extern void SkEmbossMask_BuildTable(); 48#endif 49 50#ifdef BUILD_RADIALGRADIENT_TABLE 51 extern void SkRadialGradient_BuildTable(); 52#endif 53 54void SkGraphics::Init() { 55#if !SK_ALLOW_STATIC_GLOBAL_INITIALIZERS 56 SkFlattenable::InitializeFlattenables(); 57 SkPixelRef::InitializeFlattenables(); 58#endif 59#ifdef BUILD_EMBOSS_TABLE 60 SkEmbossMask_BuildTable(); 61#endif 62#ifdef BUILD_RADIALGRADIENT_TABLE 63 SkRadialGradient_BuildTable(); 64#endif 65 66#ifdef SK_DEBUGx 67 int i; 68 69 static const struct { 70 const char* fTypeName; 71 size_t fSizeOf; 72 } gTypeSize[] = { 73 typesizeline(char), 74 typesizeline(short), 75 typesizeline(int), 76 typesizeline(long), 77 typesizeline(size_t), 78 typesizeline(void*), 79 80 typesizeline(S8CPU), 81 typesizeline(U8CPU), 82 typesizeline(S16CPU), 83 typesizeline(U16CPU), 84 85 typesizeline(SkPoint), 86 typesizeline(SkRect), 87 typesizeline(SkMatrix), 88 typesizeline(SkPath), 89 typesizeline(SkGlyph), 90 typesizeline(SkRefCnt), 91 92 typesizeline(SkPaint), 93 typesizeline(SkCanvas), 94 typesizeline(SkBlitter), 95 typesizeline(SkShader), 96 typesizeline(SkXfermode), 97 typesizeline(SkPathEffect) 98 }; 99 100#ifdef SK_CPU_BENDIAN 101 SkDebugf("SkGraphics: big-endian\n"); 102#else 103 SkDebugf("SkGraphics: little-endian\n"); 104#endif 105 106 { 107 char test = 0xFF; 108 int itest = test; // promote to int, see if it sign-extended 109 if (itest < 0) 110 SkDebugf("SkGraphics: char is signed\n"); 111 else 112 SkDebugf("SkGraphics: char is unsigned\n"); 113 } 114 for (i = 0; i < (int)SK_ARRAY_COUNT(gTypeSize); i++) { 115 SkDebugf("SkGraphics: sizeof(%s) = %d\n", 116 gTypeSize[i].fTypeName, gTypeSize[i].fSizeOf); 117 } 118 SkDebugf("SkGraphics: font cache limit %dK\n", 119 GetFontCacheLimit() >> 10); 120 121#endif 122} 123 124/////////////////////////////////////////////////////////////////////////////// 125 126#include "SkGlyphCache.h" 127#include "SkTypefaceCache.h" 128 129void SkGraphics::Term() { 130 PurgeFontCache(); 131} 132 133#ifndef SK_DEFAULT_FONT_CACHE_LIMIT 134 #define SK_DEFAULT_FONT_CACHE_LIMIT (2 * 1024 * 1024) 135#endif 136 137#define SK_MIN_FONT_CACHE_LIMIT (256 * 1024) 138 139static size_t gFontCacheLimit = SK_DEFAULT_FONT_CACHE_LIMIT; 140 141size_t SkGraphics::GetFontCacheLimit() { 142 return gFontCacheLimit; 143} 144 145size_t SkGraphics::SetFontCacheLimit(size_t bytes) { 146 size_t prev = gFontCacheLimit; 147 148 if (bytes < SK_MIN_FONT_CACHE_LIMIT) { 149 bytes = SK_MIN_FONT_CACHE_LIMIT; 150 } 151 gFontCacheLimit = bytes; 152 153 // trigger a purge if the new size is smaller that our currently used amount 154 if (bytes < SkGlyphCache::GetCacheUsed()) { 155 SkGlyphCache::SetCacheUsed(bytes); 156 } 157 return prev; 158} 159 160void SkGraphics::PurgeFontCache() { 161 SkGlyphCache::SetCacheUsed(0); 162 SkTypefaceCache::PurgeAll(); 163} 164 165/////////////////////////////////////////////////////////////////////////////// 166 167static const char kFontCacheLimitStr[] = "font-cache-limit"; 168static const size_t kFontCacheLimitLen = sizeof(kFontCacheLimitStr) - 1; 169 170static const struct { 171 const char* fStr; 172 size_t fLen; 173 size_t (*fFunc)(size_t); 174} gFlags[] = { 175 {kFontCacheLimitStr, kFontCacheLimitLen, SkGraphics::SetFontCacheLimit} 176}; 177 178/* flags are of the form param; or param=value; */ 179void SkGraphics::SetFlags(const char* flags) { 180 if (!flags) { 181 return; 182 } 183 const char* nextSemi; 184 do { 185 size_t len = strlen(flags); 186 const char* paramEnd = flags + len; 187 const char* nextEqual = strchr(flags, '='); 188 if (nextEqual && paramEnd > nextEqual) { 189 paramEnd = nextEqual; 190 } 191 nextSemi = strchr(flags, ';'); 192 if (nextSemi && paramEnd > nextSemi) { 193 paramEnd = nextSemi; 194 } 195 size_t paramLen = paramEnd - flags; 196 for (int i = 0; i < (int)SK_ARRAY_COUNT(gFlags); ++i) { 197 if (paramLen != gFlags[i].fLen) { 198 continue; 199 } 200 if (strncmp(flags, gFlags[i].fStr, paramLen) == 0) { 201 size_t val = 0; 202 if (nextEqual) { 203 val = (size_t) atoi(nextEqual + 1); 204 } 205 (gFlags[i].fFunc)(val); 206 break; 207 } 208 } 209 flags = nextSemi + 1; 210 } while (nextSemi); 211} 212