1 #Topic Illustrations 2 3 #Subtopic Image_Info_Color_Type_BGR_565 4 #Example 5 #Width 415 6 #Height 250 7 void draw(SkCanvas* canvas) { 8 canvas->scale(1.25f, 1.25f); 9 SkPaint paint; 10 paint.setAntiAlias(true); 11 paint.setTextSize(10); 12 paint.setTextAlign(SkPaint::kCenter_Align); 13 canvas->drawString("16-bit word", 5 + 20 * 8, 20, paint); 14 canvas->drawString("little endian byte order", 5 + 20 * 4, 85, paint); 15 canvas->drawString("(low bits)", 5 + 20 * 1.5f, 137, paint); 16 canvas->drawString("(high bits)", 5 + 20 * 6.5f, 187, paint); 17 auto drawBoxText = [=](SkScalar e[], const char* s[], int count, int n, SkScalar yPos) -> void { 18 SkPaint p(paint); 19 p.setColor(SK_ColorRED); 20 SkScalar xPos = 15; 21 int width = n % 32 + 1; 22 int lastN = n > 32 ? 32 : 0; 23 for (; n >= lastN; --n) { 24 for (int i = 0; i <= count; ++i) { 25 int a = width - e[i]; 26 if (a == n || a == n + 1 || a == n - 32 || a == n - 31) { 27 char num[3] = {(char) ('0' + n / 10), (char) ('0' + n % 10), '\0'}; 28 canvas->drawString(n >= 10 ? num : &num[1], xPos, yPos - 5, p); 29 break; 30 } 31 } 32 xPos += 20; 33 } 34 p.setColor(SK_ColorBLACK); 35 for (int i = 0; i < count; ++i) { 36 canvas->drawString(s[i], 5 + (e[i] + e[i + 1]) * 10, yPos + 10, p); 37 } 38 p.setStyle(SkPaint::kStroke_Style); 39 for (int i = 0; i <= count; ++i) { 40 canvas->drawLine(5 + e[i] * 20, yPos, 5 + e[i] * 20, yPos + 15, p); 41 } 42 for (int i = 0; i < 2; ++i) { 43 canvas->drawLine(5 + e[0] * 20, yPos + i * 15, 5 + e[count] * 20, yPos + i * 15, p); 44 } 45 }; 46 SkScalar edges[] = { 0, 5, 11, 16, 47 0, 3, 8, 48 0, 5, 8 }; 49 const char* labels[] = { "red", "green", "blue" }; 50 drawBoxText(&edges[0], &labels[0], 3, 15, 45); 51 drawBoxText(&edges[4], &labels[1], 2, 7, 110); 52 drawBoxText(&edges[7], &labels[0], 2, 7, 160); 53 } 54 ## 55 ## 56 57 #Subtopic Image_Info_Color_Type_ABGR_4444 58 #Example 59 #Width 415 60 #Height 250 61 void draw(SkCanvas* canvas) { 62 canvas->scale(1.25f, 1.25f); 63 SkPaint paint; 64 paint.setAntiAlias(true); 65 paint.setTextSize(10); 66 paint.setTextAlign(SkPaint::kCenter_Align); 67 canvas->drawString("16-bit word", 5 + 20 * 8, 20, paint); 68 canvas->drawString("little endian byte order", 5 + 20 * 4, 85, paint); 69 auto drawBoxText = [=](SkScalar e[], const char* s[], int count, int n, SkScalar yPos) -> void { 70 SkPaint p(paint); 71 p.setColor(SK_ColorRED); 72 SkScalar xPos = 15; 73 int width = n % 32 + 1; 74 int lastN = n > 32 ? 32 : 0; 75 for (; n >= lastN; --n) { 76 for (int i = 0; i <= count; ++i) { 77 int a = width - e[i]; 78 if (a == n || a == n + 1 || a == n - 32 || a == n - 31) { 79 char num[3] = {(char) ('0' + n / 10), (char) ('0' + n % 10), '\0'}; 80 canvas->drawString(n >= 10 ? num : &num[1], xPos, yPos - 5, p); 81 break; 82 } 83 } 84 xPos += 20; 85 } 86 p.setColor(SK_ColorBLACK); 87 for (int i = 0; i < count; ++i) { 88 canvas->drawString(s[i], 5 + (e[i] + e[i + 1]) * 10, yPos + 10, p); 89 } 90 p.setStyle(SkPaint::kStroke_Style); 91 for (int i = 0; i <= count; ++i) { 92 canvas->drawLine(5 + e[i] * 20, yPos, 5 + e[i] * 20, yPos + 15, p); 93 } 94 for (int i = 0; i < 2; ++i) { 95 canvas->drawLine(5 + e[0] * 20, yPos + i * 15, 5 + e[count] * 20, yPos + i * 15, p); 96 } 97 }; 98 SkScalar edges[] = { 0, 4, 8, 12, 16 }; 99 const char* labels[] = { "red", "green", "blue", "alpha" }; 100 drawBoxText(&edges[0], &labels[0], 4, 15, 45); 101 drawBoxText(&edges[0], &labels[2], 2, 7, 110); 102 drawBoxText(&edges[0], &labels[0], 2, 7, 160); 103 } 104 ## 105 ## 106 107 #Subtopic Image_Info_Color_Type_RGBA_8888 108 #Example 109 #Width 812 110 #Height 365 111 void draw(SkCanvas* canvas) { 112 canvas->scale(1.25f, 1.25f); 113 SkPaint paint; 114 paint.setAntiAlias(true); 115 paint.setTextSize(10); 116 paint.setTextAlign(SkPaint::kCenter_Align); 117 canvas->drawString("32-bit word", 5 + 20 * 16, 20, paint); 118 canvas->drawString("little endian byte order", 5 + 20 * 4, 85, paint); 119 auto drawBoxText = [=](SkScalar e[], const char* s[], int count, int n, SkScalar yPos) -> void { 120 SkPaint p(paint); 121 p.setColor(SK_ColorRED); 122 SkScalar xPos = 15; 123 int width = n % 32 + 1; 124 int lastN = n > 32 ? 32 : 0; 125 for (; n >= lastN; --n) { 126 for (int i = 0; i <= count; ++i) { 127 int a = width - e[i]; 128 if (a == n || a == n + 1 || a == n - 32 || a == n - 31) { 129 char num[3] = {(char) ('0' + n / 10), (char) ('0' + n % 10), '\0'}; 130 canvas->drawString(n >= 10 ? num : &num[1], xPos, yPos - 5, p); 131 break; 132 } 133 } 134 xPos += 20; 135 } 136 p.setColor(SK_ColorBLACK); 137 for (int i = 0; i < count; ++i) { 138 canvas->drawString(s[i], 5 + (e[i] + e[i + 1]) * 10, yPos + 10, p); 139 } 140 p.setStyle(SkPaint::kStroke_Style); 141 for (int i = 0; i <= count; ++i) { 142 canvas->drawLine(5 + e[i] * 20, yPos, 5 + e[i] * 20, yPos + 15, p); 143 } 144 for (int i = 0; i < 2; ++i) { 145 canvas->drawLine(5 + e[0] * 20, yPos + i * 15, 5 + e[count] * 20, yPos + i * 15, p); 146 } 147 }; 148 SkScalar edges[] = { 0, 8, 16, 24, 32 }; 149 const char* labels[] = { "alpha", "blue", "green", "red" }; 150 drawBoxText(edges, &labels[0], 4, 31, 45); 151 drawBoxText(edges, &labels[3], 1, 7, 110); 152 drawBoxText(edges, &labels[2], 1, 7, 160); 153 drawBoxText(edges, &labels[1], 1, 7, 210); 154 drawBoxText(edges, &labels[0], 1, 7, 260); 155 } 156 ## 157 ## 158 159 #Subtopic Image_Info_Color_Type_RGB_888x 160 #Example 161 #Width 812 162 #Height 365 163 void draw(SkCanvas* canvas) { 164 canvas->scale(1.25f, 1.25f); 165 SkPaint paint; 166 paint.setAntiAlias(true); 167 paint.setTextSize(10); 168 paint.setTextAlign(SkPaint::kCenter_Align); 169 canvas->drawString("32-bit word", 5 + 20 * 16, 20, paint); 170 canvas->drawString("little endian byte order", 5 + 20 * 4, 85, paint); 171 auto drawBoxText = [=](SkScalar e[], const char* s[], int count, int n, SkScalar yPos) -> void { 172 SkPaint p(paint); 173 p.setColor(SK_ColorRED); 174 SkScalar xPos = 15; 175 int width = n % 32 + 1; 176 int lastN = n > 32 ? 32 : 0; 177 for (; n >= lastN; --n) { 178 for (int i = 0; i <= count; ++i) { 179 int a = width - e[i]; 180 if (a == n || a == n + 1 || a == n - 32 || a == n - 31) { 181 char num[3] = {(char) ('0' + n / 10), (char) ('0' + n % 10), '\0'}; 182 canvas->drawString(n >= 10 ? num : &num[1], xPos, yPos - 5, p); 183 break; 184 } 185 } 186 xPos += 20; 187 } 188 p.setColor(SK_ColorBLACK); 189 for (int i = 0; i < count; ++i) { 190 canvas->drawString(s[i], 5 + (e[i] + e[i + 1]) * 10, yPos + 10, p); 191 } 192 p.setStyle(SkPaint::kStroke_Style); 193 for (int i = 0; i <= count; ++i) { 194 canvas->drawLine(5 + e[i] * 20, yPos, 5 + e[i] * 20, yPos + 15, p); 195 } 196 for (int i = 0; i < 2; ++i) { 197 canvas->drawLine(5 + e[0] * 20, yPos + i * 15, 5 + e[count] * 20, yPos + i * 15, p); 198 } 199 }; 200 SkScalar edges[] = { 0, 8, 16, 24, 32 }; 201 const char* labels[] = { "(unused)", "blue", "green", "red" }; 202 drawBoxText(edges, &labels[0], 4, 31, 45); 203 drawBoxText(edges, &labels[3], 1, 7, 110); 204 drawBoxText(edges, &labels[2], 1, 7, 160); 205 drawBoxText(edges, &labels[1], 1, 7, 210); 206 drawBoxText(edges, &labels[0], 1, 7, 260); 207 } 208 ## 209 ## 210 211 #Subtopic Image_Info_Color_Type_BGRA_8888 212 #Example 213 #Width 812 214 #Height 365 215 void draw(SkCanvas* canvas) { 216 canvas->scale(1.25f, 1.25f); 217 SkPaint paint; 218 paint.setAntiAlias(true); 219 paint.setTextSize(10); 220 paint.setTextAlign(SkPaint::kCenter_Align); 221 canvas->drawString("32-bit word", 5 + 20 * 16, 20, paint); 222 canvas->drawString("little endian byte order", 5 + 20 * 4, 85, paint); 223 auto drawBoxText = [=](SkScalar e[], const char* s[], int count, int n, SkScalar yPos) -> void { 224 SkPaint p(paint); 225 p.setColor(SK_ColorRED); 226 SkScalar xPos = 15; 227 int width = n % 32 + 1; 228 int lastN = n > 32 ? 32 : 0; 229 for (; n >= lastN; --n) { 230 for (int i = 0; i <= count; ++i) { 231 int a = width - e[i]; 232 if (a == n || a == n + 1 || a == n - 32 || a == n - 31) { 233 char num[3] = {(char) ('0' + n / 10), (char) ('0' + n % 10), '\0'}; 234 canvas->drawString(n >= 10 ? num : &num[1], xPos, yPos - 5, p); 235 break; 236 } 237 } 238 xPos += 20; 239 } 240 p.setColor(SK_ColorBLACK); 241 for (int i = 0; i < count; ++i) { 242 canvas->drawString(s[i], 5 + (e[i] + e[i + 1]) * 10, yPos + 10, p); 243 } 244 p.setStyle(SkPaint::kStroke_Style); 245 for (int i = 0; i <= count; ++i) { 246 canvas->drawLine(5 + e[i] * 20, yPos, 5 + e[i] * 20, yPos + 15, p); 247 } 248 for (int i = 0; i < 2; ++i) { 249 canvas->drawLine(5 + e[0] * 20, yPos + i * 15, 5 + e[count] * 20, yPos + i * 15, p); 250 } 251 }; 252 SkScalar edges[] = { 0, 8, 16, 24, 32 }; 253 const char* labels[] = { "alpha", "red", "green", "blue" }; 254 drawBoxText(edges, &labels[0], 4, 31, 45); 255 drawBoxText(edges, &labels[3], 1, 7, 110); 256 drawBoxText(edges, &labels[2], 1, 7, 160); 257 drawBoxText(edges, &labels[1], 1, 7, 210); 258 drawBoxText(edges, &labels[0], 1, 7, 260); 259 } 260 ## 261 ## 262 263 #Subtopic Image_Info_Color_Type_RGBA_1010102 264 #Example 265 #Width 812 266 #Height 380 267 void draw(SkCanvas* canvas) { 268 canvas->scale(1.25f, 1.25f); 269 SkPaint paint; 270 paint.setAntiAlias(true); 271 paint.setTextSize(10); 272 paint.setTextAlign(SkPaint::kCenter_Align); 273 canvas->drawString("32-bit word", 5 + 20 * 16, 20, paint); 274 canvas->drawString("little endian byte order", 5 + 20 * 4, 85, paint); 275 canvas->drawString("(low bits)", 5 + 20 * 4, 137, paint); 276 canvas->drawString("(low bits)", 5 + 20 * 3, 187, paint); 277 canvas->drawString("(high bits)", 5 + 20 * 7, 187, paint); 278 canvas->drawString("(low bits)", 5 + 20 * 2, 237, paint); 279 canvas->drawString("(high bits)", 5 + 20 * 6, 237, paint); 280 canvas->drawString("(high bits)", 5 + 20 * 5, 287, paint); 281 auto drawBoxText = [=](SkScalar e[], const char* s[], int count, int n, SkScalar yPos) -> void { 282 SkPaint p(paint); 283 p.setColor(SK_ColorRED); 284 SkScalar xPos = 15; 285 int width = n % 32 + 1; 286 int lastN = n > 32 ? 32 : 0; 287 for (; n >= lastN; --n) { 288 for (int i = 0; i <= count; ++i) { 289 int a = width - e[i]; 290 if (a == n || a == n + 1 || a == n - 32 || a == n - 31) { 291 char num[3] = {(char) ('0' + n / 10), (char) ('0' + n % 10), '\0'}; 292 canvas->drawString(n >= 10 ? num : &num[1], xPos, yPos - 5, p); 293 break; 294 } 295 } 296 xPos += 20; 297 } 298 p.setColor(SK_ColorBLACK); 299 for (int i = 0; i < count; ++i) { 300 canvas->drawString(s[i], 5 + (e[i] + e[i + 1]) * 10, yPos + 10, p); 301 } 302 p.setStyle(SkPaint::kStroke_Style); 303 for (int i = 0; i <= count; ++i) { 304 canvas->drawLine(5 + e[i] * 20, yPos, 5 + e[i] * 20, yPos + 15, p); 305 } 306 for (int i = 0; i < 2; ++i) { 307 canvas->drawLine(5 + e[0] * 20, yPos + i * 15, 5 + e[count] * 20, yPos + i * 15, p); 308 } 309 }; 310 SkScalar edges[] = { 0, 2, 12, 22, 32, 311 0, 8, 312 0, 6, 8, 313 0, 4, 8, 314 0, 2, 8 315 }; 316 const char* labels[] = { "alpha", "blue", "green", "red" }; 317 drawBoxText(&edges[0], &labels[0], 4, 31, 45); 318 drawBoxText(&edges[5], &labels[3], 1, 7, 110); 319 drawBoxText(&edges[7], &labels[2], 2, 7, 160); 320 drawBoxText(&edges[10], &labels[1], 2, 7, 210); 321 drawBoxText(&edges[13], &labels[0], 2, 7, 260); 322 } 323 ## 324 ## 325 326 #Subtopic Image_Info_Color_Type_RGB_101010x 327 #Example 328 #Width 812 329 #Height 380 330 void draw(SkCanvas* canvas) { 331 canvas->scale(1.25f, 1.25f); 332 SkPaint paint; 333 paint.setAntiAlias(true); 334 paint.setTextSize(10); 335 paint.setTextAlign(SkPaint::kCenter_Align); 336 canvas->drawString("32-bit word", 5 + 20 * 16, 20, paint); 337 canvas->drawString("little endian byte order", 5 + 20 * 4, 85, paint); 338 canvas->drawString("(low bits)", 5 + 20 * 4, 137, paint); 339 canvas->drawString("(low bits)", 5 + 20 * 3, 187, paint); 340 canvas->drawString("(high bits)", 5 + 20 * 7, 187, paint); 341 canvas->drawString("(low bits)", 5 + 20 * 2, 237, paint); 342 canvas->drawString("(high bits)", 5 + 20 * 6, 237, paint); 343 canvas->drawString("(high bits)", 5 + 20 * 5, 287, paint); 344 auto drawBoxText = [=](SkScalar e[], const char* s[], int count, int n, SkScalar yPos) -> void { 345 SkPaint p(paint); 346 p.setColor(SK_ColorRED); 347 SkScalar xPos = 15; 348 int width = n % 32 + 1; 349 int lastN = n > 32 ? 32 : 0; 350 for (; n >= lastN; --n) { 351 for (int i = 0; i <= count; ++i) { 352 int a = width - e[i]; 353 if (a == n || a == n + 1 || a == n - 32 || a == n - 31) { 354 char num[3] = {(char) ('0' + n / 10), (char) ('0' + n % 10), '\0'}; 355 canvas->drawString(n >= 10 ? num : &num[1], xPos, yPos - 5, p); 356 break; 357 } 358 } 359 xPos += 20; 360 } 361 p.setColor(SK_ColorBLACK); 362 for (int i = 0; i < count; ++i) { 363 canvas->drawString(s[i], 5 + (e[i] + e[i + 1]) * 10, yPos + 10, p); 364 } 365 p.setStyle(SkPaint::kStroke_Style); 366 for (int i = 0; i <= count; ++i) { 367 canvas->drawLine(5 + e[i] * 20, yPos, 5 + e[i] * 20, yPos + 15, p); 368 } 369 for (int i = 0; i < 2; ++i) { 370 canvas->drawLine(5 + e[0] * 20, yPos + i * 15, 5 + e[count] * 20, yPos + i * 15, p); 371 } 372 }; 373 SkScalar edges[] = { 0, 2, 12, 22, 32, 374 0, 8, 375 0, 6, 8, 376 0, 4, 8, 377 0, 2, 8 378 }; 379 const char* labels[] = { "unused", "blue", "green", "red" }; 380 drawBoxText(&edges[0], &labels[0], 4, 31, 45); 381 drawBoxText(&edges[5], &labels[3], 1, 7, 110); 382 drawBoxText(&edges[7], &labels[2], 2, 7, 160); 383 drawBoxText(&edges[10], &labels[1], 2, 7, 210); 384 drawBoxText(&edges[13], &labels[0], 2, 7, 260); 385 } 386 ## 387 ## 388 389 #Subtopic Image_Info_Color_Type_RGBA_F16 390 #Example 391 #Width 812 392 #Height 685 393 void draw(SkCanvas* canvas) { 394 canvas->scale(1.25f, 1.25f); 395 SkPaint paint; 396 paint.setAntiAlias(true); 397 paint.setTextSize(10); 398 paint.setTextAlign(SkPaint::kCenter_Align); 399 canvas->drawString("64-bit word", 5 + 20 * 16, 20, paint); 400 canvas->drawString("little endian byte order", 5 + 20 * 4, 135, paint); 401 for (int i = 0; i < 4; ++i) { 402 canvas->drawString("(low bits)", 5 + 20 * 4, 187 + i * 100, paint); 403 canvas->drawString("(high bits)", 5 + 20 * 4, 237 + i * 100, paint); 404 } 405 auto drawBoxText = [=](SkScalar e[], const char* s[], int count, int n, SkScalar yPos) -> void { 406 SkPaint p(paint); 407 p.setColor(SK_ColorRED); 408 SkScalar xPos = 15; 409 int width = n % 32 + 1; 410 int lastN = n > 32 ? 32 : 0; 411 for (; n >= lastN; --n) { 412 for (int i = 0; i <= count; ++i) { 413 int a = width - e[i]; 414 if (a == n || a == n + 1 || a == n - 32 || a == n - 31) { 415 char num[3] = {(char) ('0' + n / 10), (char) ('0' + n % 10), '\0'}; 416 canvas->drawString(n >= 10 ? num : &num[1], xPos, yPos - 5, p); 417 break; 418 } 419 } 420 xPos += 20; 421 } 422 p.setColor(SK_ColorBLACK); 423 for (int i = 0; i < count; ++i) { 424 canvas->drawString(s[i], 5 + (e[i] + e[i + 1]) * 10, yPos + 10, p); 425 } 426 p.setStyle(SkPaint::kStroke_Style); 427 for (int i = 0; i <= count; ++i) { 428 canvas->drawLine(5 + e[i] * 20, yPos, 5 + e[i] * 20, yPos + 15, p); 429 } 430 for (int i = 0; i < 2; ++i) { 431 canvas->drawLine(5 + e[0] * 20, yPos + i * 15, 5 + e[count] * 20, yPos + i * 15, p); 432 } 433 }; 434 SkScalar edges[] = { 0, 16, 32, 435 0, 8 436 }; 437 const char* labels[] = { "alpha", "blue", "green", "red" }; 438 drawBoxText(&edges[0], &labels[0], 2, 63, 45); 439 drawBoxText(&edges[0], &labels[2], 2, 31, 95); 440 drawBoxText(&edges[3], &labels[3], 1, 7, 160); 441 drawBoxText(&edges[3], &labels[3], 1, 7, 210); 442 drawBoxText(&edges[3], &labels[2], 1, 7, 260); 443 drawBoxText(&edges[3], &labels[2], 1, 7, 310); 444 drawBoxText(&edges[3], &labels[1], 1, 7, 360); 445 drawBoxText(&edges[3], &labels[1], 1, 7, 410); 446 drawBoxText(&edges[3], &labels[0], 1, 7, 460); 447 drawBoxText(&edges[3], &labels[0], 1, 7, 510); 448 } 449 ## 450 ## 451 452 #Topic Illustrations ## 453
