1 /* 2 * Copyright 2014 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "sk_tool_utils.h" 9 #include "sk_tool_utils_flags.h" 10 11 #include "Resources.h" 12 #include "SkBitmap.h" 13 #include "SkCanvas.h" 14 #include "SkCommonFlags.h" 15 #include "SkPoint3.h" 16 #include "SkShader.h" 17 #include "SkTestScalerContext.h" 18 #include "SkTextBlob.h" 19 20 DEFINE_bool(portableFonts, false, "Use portable fonts"); 21 22 namespace sk_tool_utils { 23 24 /* these are the default fonts chosen by Chrome for serif, sans-serif, and monospace */ 25 static const char* gStandardFontNames[][3] = { 26 { "Times", "Helvetica", "Courier" }, // Mac 27 { "Times New Roman", "Helvetica", "Courier" }, // iOS 28 { "Times New Roman", "Arial", "Courier New" }, // Win 29 { "Times New Roman", "Arial", "Monospace" }, // Ubuntu 30 { "serif", "sans-serif", "monospace" }, // Android 31 { "Tinos", "Arimo", "Cousine" } // ChromeOS 32 }; 33 34 const char* platform_font_name(const char* name) { 35 SkString platform = major_platform_os_name(); 36 int index; 37 if (!strcmp(name, "serif")) { 38 index = 0; 39 } else if (!strcmp(name, "san-serif")) { 40 index = 1; 41 } else if (!strcmp(name, "monospace")) { 42 index = 2; 43 } else { 44 return name; 45 } 46 if (platform.equals("Mac")) { 47 return gStandardFontNames[0][index]; 48 } 49 if (platform.equals("iOS")) { 50 return gStandardFontNames[1][index]; 51 } 52 if (platform.equals("Win")) { 53 return gStandardFontNames[2][index]; 54 } 55 if (platform.equals("Ubuntu")) { 56 return gStandardFontNames[3][index]; 57 } 58 if (platform.equals("Android")) { 59 return gStandardFontNames[4][index]; 60 } 61 if (platform.equals("ChromeOS")) { 62 return gStandardFontNames[5][index]; 63 } 64 return name; 65 } 66 67 const char* platform_os_emoji() { 68 const char* osName = platform_os_name(); 69 if (!strcmp(osName, "Android") || !strcmp(osName, "Ubuntu")) { 70 return "CBDT"; 71 } 72 if (!strncmp(osName, "Mac", 3)) { 73 return "SBIX"; 74 } 75 return ""; 76 } 77 78 void emoji_typeface(SkAutoTUnref<SkTypeface>* tf) { 79 if (!strcmp(sk_tool_utils::platform_os_emoji(), "CBDT")) { 80 tf->reset(GetResourceAsTypeface("/fonts/Funkster.ttf")); 81 return; 82 } 83 if (!strcmp(sk_tool_utils::platform_os_emoji(), "SBIX")) { 84 tf->reset(SkTypeface::CreateFromName("Apple Color Emoji", SkTypeface::kNormal)); 85 return; 86 } 87 tf->reset(nullptr); 88 return; 89 } 90 91 const char* emoji_sample_text() { 92 if (!strcmp(sk_tool_utils::platform_os_emoji(), "CBDT")) { 93 return "Hamburgefons"; 94 } 95 if (!strcmp(sk_tool_utils::platform_os_emoji(), "SBIX")) { 96 return "\xF0\x9F\x92\xB0" "\xF0\x9F\x8F\xA1" "\xF0\x9F\x8E\x85" // 97 "\xF0\x9F\x8D\xAA" "\xF0\x9F\x8D\x95" "\xF0\x9F\x9A\x80" // 98 "\xF0\x9F\x9A\xBB" "\xF0\x9F\x92\xA9" "\xF0\x9F\x93\xB7" // 99 "\xF0\x9F\x93\xA6" // 100 "\xF0\x9F\x87\xBA" "\xF0\x9F\x87\xB8" "\xF0\x9F\x87\xA6"; // 101 } 102 return ""; 103 } 104 105 const char* platform_os_name() { 106 for (int index = 0; index < FLAGS_key.count(); index += 2) { 107 if (!strcmp("os", FLAGS_key[index])) { 108 return FLAGS_key[index + 1]; 109 } 110 } 111 // when running SampleApp or dm without a --key pair, omit the platform name 112 return ""; 113 } 114 115 // omit version number in returned value 116 SkString major_platform_os_name() { 117 SkString name; 118 for (int index = 0; index < FLAGS_key.count(); index += 2) { 119 if (!strcmp("os", FLAGS_key[index])) { 120 const char* platform = FLAGS_key[index + 1]; 121 const char* end = platform; 122 while (*end && (*end < '0' || *end > '9')) { 123 ++end; 124 } 125 name.append(platform, end - platform); 126 break; 127 } 128 } 129 return name; 130 } 131 132 const char* platform_extra_config(const char* config) { 133 for (int index = 0; index < FLAGS_key.count(); index += 2) { 134 if (!strcmp("extra_config", FLAGS_key[index]) && !strcmp(config, FLAGS_key[index + 1])) { 135 return config; 136 } 137 } 138 return ""; 139 } 140 141 const char* colortype_name(SkColorType ct) { 142 switch (ct) { 143 case kUnknown_SkColorType: return "Unknown"; 144 case kAlpha_8_SkColorType: return "Alpha_8"; 145 case kIndex_8_SkColorType: return "Index_8"; 146 case kARGB_4444_SkColorType: return "ARGB_4444"; 147 case kRGB_565_SkColorType: return "RGB_565"; 148 case kRGBA_8888_SkColorType: return "RGBA_8888"; 149 case kBGRA_8888_SkColorType: return "BGRA_8888"; 150 default: 151 SkASSERT(false); 152 return "unexpected colortype"; 153 } 154 } 155 156 SkColor color_to_565(SkColor color) { 157 SkPMColor pmColor = SkPreMultiplyColor(color); 158 U16CPU color16 = SkPixel32ToPixel16(pmColor); 159 return SkPixel16ToColor(color16); 160 } 161 162 SkTypeface* create_portable_typeface(const char* name, SkTypeface::Style style) { 163 return create_font(name, style); 164 } 165 166 void set_portable_typeface(SkPaint* paint, const char* name, SkTypeface::Style style) { 167 SkTypeface* face = create_font(name, style); 168 SkSafeUnref(paint->setTypeface(face)); 169 } 170 171 void write_pixels(SkCanvas* canvas, const SkBitmap& bitmap, int x, int y, 172 SkColorType colorType, SkAlphaType alphaType) { 173 SkBitmap tmp(bitmap); 174 tmp.lockPixels(); 175 176 const SkImageInfo info = SkImageInfo::Make(tmp.width(), tmp.height(), colorType, alphaType); 177 178 canvas->writePixels(info, tmp.getPixels(), tmp.rowBytes(), x, y); 179 } 180 181 SkShader* create_checkerboard_shader(SkColor c1, SkColor c2, int size) { 182 SkBitmap bm; 183 bm.allocN32Pixels(2 * size, 2 * size); 184 bm.eraseColor(c1); 185 bm.eraseArea(SkIRect::MakeLTRB(0, 0, size, size), c2); 186 bm.eraseArea(SkIRect::MakeLTRB(size, size, 2 * size, 2 * size), c2); 187 return SkShader::CreateBitmapShader( 188 bm, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode); 189 } 190 191 SkBitmap create_checkerboard_bitmap(int w, int h, SkColor c1, SkColor c2, int checkSize) { 192 SkBitmap bitmap; 193 bitmap.allocN32Pixels(w, h); 194 SkCanvas canvas(bitmap); 195 196 sk_tool_utils::draw_checkerboard(&canvas, c1, c2, checkSize); 197 return bitmap; 198 } 199 200 void draw_checkerboard(SkCanvas* canvas, SkColor c1, SkColor c2, int size) { 201 SkPaint paint; 202 paint.setShader(create_checkerboard_shader(c1, c2, size))->unref(); 203 paint.setXfermodeMode(SkXfermode::kSrc_Mode); 204 canvas->drawPaint(paint); 205 } 206 207 SkBitmap create_string_bitmap(int w, int h, SkColor c, int x, int y, 208 int textSize, const char* str) { 209 SkBitmap bitmap; 210 bitmap.allocN32Pixels(w, h); 211 SkCanvas canvas(bitmap); 212 213 SkPaint paint; 214 paint.setAntiAlias(true); 215 sk_tool_utils::set_portable_typeface(&paint); 216 paint.setColor(c); 217 paint.setTextSize(SkIntToScalar(textSize)); 218 219 canvas.clear(0x00000000); 220 canvas.drawText(str, strlen(str), SkIntToScalar(x), SkIntToScalar(y), paint); 221 222 return bitmap; 223 } 224 225 void add_to_text_blob(SkTextBlobBuilder* builder, const char* text, const SkPaint& origPaint, 226 SkScalar x, SkScalar y) { 227 SkPaint paint(origPaint); 228 SkTDArray<uint16_t> glyphs; 229 230 size_t len = strlen(text); 231 glyphs.append(paint.textToGlyphs(text, len, nullptr)); 232 paint.textToGlyphs(text, len, glyphs.begin()); 233 234 paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding); 235 const SkTextBlobBuilder::RunBuffer& run = builder->allocRun(paint, glyphs.count(), x, y, 236 nullptr); 237 memcpy(run.glyphs, glyphs.begin(), glyphs.count() * sizeof(uint16_t)); 238 } 239 240 static inline void norm_to_rgb(SkBitmap* bm, int x, int y, const SkVector3& norm) { 241 SkASSERT(SkScalarNearlyEqual(norm.length(), 1.0f)); 242 unsigned char r = static_cast<unsigned char>((0.5f * norm.fX + 0.5f) * 255); 243 unsigned char g = static_cast<unsigned char>((-0.5f * norm.fY + 0.5f) * 255); 244 unsigned char b = static_cast<unsigned char>((0.5f * norm.fZ + 0.5f) * 255); 245 *bm->getAddr32(x, y) = SkPackARGB32(0xFF, r, g, b); 246 } 247 248 void create_hemi_normal_map(SkBitmap* bm, const SkIRect& dst) { 249 const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f), 250 dst.fTop + (dst.height() / 2.0f)); 251 const SkPoint halfSize = SkPoint::Make(dst.width() / 2.0f, dst.height() / 2.0f); 252 253 SkVector3 norm; 254 255 for (int y = dst.fTop; y < dst.fBottom; ++y) { 256 for (int x = dst.fLeft; x < dst.fRight; ++x) { 257 norm.fX = (x + 0.5f - center.fX) / halfSize.fX; 258 norm.fY = (y + 0.5f - center.fY) / halfSize.fY; 259 260 SkScalar tmp = norm.fX * norm.fX + norm.fY * norm.fY; 261 if (tmp >= 1.0f) { 262 norm.set(0.0f, 0.0f, 1.0f); 263 } else { 264 norm.fZ = sqrtf(1.0f - tmp); 265 } 266 267 norm_to_rgb(bm, x, y, norm); 268 } 269 } 270 } 271 272 void create_frustum_normal_map(SkBitmap* bm, const SkIRect& dst) { 273 const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f), 274 dst.fTop + (dst.height() / 2.0f)); 275 276 SkIRect inner = dst; 277 inner.inset(dst.width()/4, dst.height()/4); 278 279 SkPoint3 norm; 280 const SkPoint3 left = SkPoint3::Make(-SK_ScalarRoot2Over2, 0.0f, SK_ScalarRoot2Over2); 281 const SkPoint3 up = SkPoint3::Make(0.0f, -SK_ScalarRoot2Over2, SK_ScalarRoot2Over2); 282 const SkPoint3 right = SkPoint3::Make(SK_ScalarRoot2Over2, 0.0f, SK_ScalarRoot2Over2); 283 const SkPoint3 down = SkPoint3::Make(0.0f, SK_ScalarRoot2Over2, SK_ScalarRoot2Over2); 284 285 for (int y = dst.fTop; y < dst.fBottom; ++y) { 286 for (int x = dst.fLeft; x < dst.fRight; ++x) { 287 if (inner.contains(x, y)) { 288 norm.set(0.0f, 0.0f, 1.0f); 289 } else { 290 SkScalar locX = x + 0.5f - center.fX; 291 SkScalar locY = y + 0.5f - center.fY; 292 293 if (locX >= 0.0f) { 294 if (locY > 0.0f) { 295 norm = locX >= locY ? right : down; // LR corner 296 } else { 297 norm = locX > -locY ? right : up; // UR corner 298 } 299 } else { 300 if (locY > 0.0f) { 301 norm = -locX > locY ? left : down; // LL corner 302 } else { 303 norm = locX > locY ? up : left; // UL corner 304 } 305 } 306 } 307 308 norm_to_rgb(bm, x, y, norm); 309 } 310 } 311 } 312 313 void create_tetra_normal_map(SkBitmap* bm, const SkIRect& dst) { 314 const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f), 315 dst.fTop + (dst.height() / 2.0f)); 316 317 static const SkScalar k1OverRoot3 = 0.5773502692f; 318 319 SkPoint3 norm; 320 const SkPoint3 leftUp = SkPoint3::Make(-k1OverRoot3, -k1OverRoot3, k1OverRoot3); 321 const SkPoint3 rightUp = SkPoint3::Make(k1OverRoot3, -k1OverRoot3, k1OverRoot3); 322 const SkPoint3 down = SkPoint3::Make(0.0f, SK_ScalarRoot2Over2, SK_ScalarRoot2Over2); 323 324 for (int y = dst.fTop; y < dst.fBottom; ++y) { 325 for (int x = dst.fLeft; x < dst.fRight; ++x) { 326 SkScalar locX = x + 0.5f - center.fX; 327 SkScalar locY = y + 0.5f - center.fY; 328 329 if (locX >= 0.0f) { 330 if (locY > 0.0f) { 331 norm = locX >= locY ? rightUp : down; // LR corner 332 } else { 333 norm = rightUp; 334 } 335 } else { 336 if (locY > 0.0f) { 337 norm = -locX > locY ? leftUp : down; // LL corner 338 } else { 339 norm = leftUp; 340 } 341 } 342 343 norm_to_rgb(bm, x, y, norm); 344 } 345 } 346 } 347 348 void make_big_path(SkPath& path) { 349 #include "BigPathBench.inc" 350 } 351 352 static float gaussian2d_value(int x, int y, float sigma) { 353 // don't bother with the scale term since we're just going to normalize the 354 // kernel anyways 355 float temp = expf(-(x*x + y*y)/(2*sigma*sigma)); 356 return temp; 357 } 358 359 static float* create_2d_kernel(float sigma, int* filterSize) { 360 // We will actually take 2*halfFilterSize+1 samples (i.e., our filter kernel 361 // sizes are always odd) 362 int halfFilterSize = SkScalarCeilToInt(6*sigma)/2; 363 int wh = *filterSize = 2*halfFilterSize + 1; 364 365 float* temp = new float[wh*wh]; 366 367 float filterTot = 0.0f; 368 for (int yOff = 0; yOff < wh; ++yOff) { 369 for (int xOff = 0; xOff < wh; ++xOff) { 370 temp[yOff*wh+xOff] = gaussian2d_value(xOff-halfFilterSize, yOff-halfFilterSize, sigma); 371 372 filterTot += temp[yOff*wh+xOff]; 373 } 374 } 375 376 // normalize the kernel 377 for (int yOff = 0; yOff < wh; ++yOff) { 378 for (int xOff = 0; xOff < wh; ++xOff) { 379 temp[yOff*wh+xOff] /= filterTot; 380 } 381 } 382 383 return temp; 384 } 385 386 static SkPMColor blur_pixel(const SkBitmap& bm, int x, int y, float* kernel, int wh) { 387 SkASSERT(wh & 0x1); 388 389 int halfFilterSize = (wh-1)/2; 390 391 float r = 0.0f, g = 0.0f, b = 0.0f; 392 for (int yOff = 0; yOff < wh; ++yOff) { 393 int ySamp = y + yOff - halfFilterSize; 394 395 if (ySamp < 0) { 396 ySamp = 0; 397 } else if (ySamp > bm.height()-1) { 398 ySamp = bm.height()-1; 399 } 400 401 for (int xOff = 0; xOff < wh; ++xOff) { 402 int xSamp = x + xOff - halfFilterSize; 403 404 if (xSamp < 0) { 405 xSamp = 0; 406 } else if (xSamp > bm.width()-1) { 407 xSamp = bm.width()-1; 408 } 409 410 float filter = kernel[yOff*wh + xOff]; 411 412 SkPMColor c = *bm.getAddr32(xSamp, ySamp); 413 414 r += SkGetPackedR32(c) * filter; 415 g += SkGetPackedG32(c) * filter; 416 b += SkGetPackedB32(c) * filter; 417 } 418 } 419 420 U8CPU r8, g8, b8; 421 422 r8 = (U8CPU) (r+0.5f); 423 g8 = (U8CPU) (g+0.5f); 424 b8 = (U8CPU) (b+0.5f); 425 426 return SkPackARGB32(255, r8, g8, b8); 427 } 428 429 SkBitmap slow_blur(const SkBitmap& src, float sigma) { 430 SkBitmap dst; 431 432 dst.allocN32Pixels(src.width(), src.height(), true); 433 434 int wh; 435 SkAutoTDeleteArray<float> kernel(create_2d_kernel(sigma, &wh)); 436 437 for (int y = 0; y < src.height(); ++y) { 438 for (int x = 0; x < src.width(); ++x) { 439 *dst.getAddr32(x, y) = blur_pixel(src, x, y, kernel.get(), wh); 440 } 441 } 442 443 return dst; 444 } 445 446 } // namespace sk_tool_utils 447
