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 "SkFontMgr.h"
16 #include "SkFontStyle.h"
17 #include "SkPixelRef.h"
18 #include "SkPoint3.h"
19 #include "SkShader.h"
20 #include "SkTestScalerContext.h"
21 #include "SkTextBlob.h"
22
23 DEFINE_bool(portableFonts, false, "Use portable fonts");
24
25 namespace sk_tool_utils {
26
27 /* these are the default fonts chosen by Chrome for serif, sans-serif, and monospace */
28 static const char* gStandardFontNames[][3] = {
29 { "Times", "Helvetica", "Courier" }, // Mac
30 { "Times New Roman", "Helvetica", "Courier" }, // iOS
31 { "Times New Roman", "Arial", "Courier New" }, // Win
32 { "Times New Roman", "Arial", "Monospace" }, // Ubuntu
33 { "serif", "sans-serif", "monospace" }, // Android
34 { "Tinos", "Arimo", "Cousine" } // ChromeOS
35 };
36
platform_font_name(const char * name)37 const char* platform_font_name(const char* name) {
38 SkString platform = major_platform_os_name();
39 int index;
40 if (!strcmp(name, "serif")) {
41 index = 0;
42 } else if (!strcmp(name, "san-serif")) {
43 index = 1;
44 } else if (!strcmp(name, "monospace")) {
45 index = 2;
46 } else {
47 return name;
48 }
49 if (platform.equals("Mac")) {
50 return gStandardFontNames[0][index];
51 }
52 if (platform.equals("iOS")) {
53 return gStandardFontNames[1][index];
54 }
55 if (platform.equals("Win")) {
56 return gStandardFontNames[2][index];
57 }
58 if (platform.equals("Ubuntu") || platform.equals("Debian")) {
59 return gStandardFontNames[3][index];
60 }
61 if (platform.equals("Android")) {
62 return gStandardFontNames[4][index];
63 }
64 if (platform.equals("ChromeOS")) {
65 return gStandardFontNames[5][index];
66 }
67 return name;
68 }
69
platform_os_emoji()70 const char* platform_os_emoji() {
71 const char* osName = platform_os_name();
72 if (!strcmp(osName, "Android") || !strcmp(osName, "Ubuntu") || !strcmp(osName, "Debian")) {
73 return "CBDT";
74 }
75 if (!strncmp(osName, "Mac", 3) || !strncmp(osName, "iOS", 3)) {
76 return "SBIX";
77 }
78 if (!strncmp(osName, "Win", 3)) {
79 return "COLR";
80 }
81 return "";
82 }
83
emoji_typeface()84 sk_sp<SkTypeface> emoji_typeface() {
85 if (!strcmp(sk_tool_utils::platform_os_emoji(), "CBDT")) {
86 return MakeResourceAsTypeface("/fonts/Funkster.ttf");
87 }
88 if (!strcmp(sk_tool_utils::platform_os_emoji(), "SBIX")) {
89 return SkTypeface::MakeFromName("Apple Color Emoji", SkFontStyle());
90 }
91 if (!strcmp(sk_tool_utils::platform_os_emoji(), "COLR")) {
92 sk_sp<SkFontMgr> fm(SkFontMgr::RefDefault());
93 const char *colorEmojiFontName = "Segoe UI Emoji";
94 sk_sp<SkTypeface> typeface(fm->matchFamilyStyle(colorEmojiFontName, SkFontStyle()));
95 if (typeface) {
96 return typeface;
97 }
98 sk_sp<SkTypeface> fallback(fm->matchFamilyStyleCharacter(
99 colorEmojiFontName, SkFontStyle(), nullptr /* bcp47 */, 0 /* bcp47Count */,
100 0x1f4b0 /* character: �� */));
101 if (fallback) {
102 return fallback;
103 }
104 // If we don't have Segoe UI Emoji and can't find a fallback, try Segoe UI Symbol.
105 // Windows 7 does not have Segoe UI Emoji; Segoe UI Symbol has the (non - color) emoji.
106 return SkTypeface::MakeFromName("Segoe UI Symbol", SkFontStyle());
107 }
108 return nullptr;
109 }
110
emoji_sample_text()111 const char* emoji_sample_text() {
112 if (!strcmp(sk_tool_utils::platform_os_emoji(), "CBDT")) {
113 return "Hamburgefons";
114 }
115 if (!strcmp(sk_tool_utils::platform_os_emoji(), "SBIX") ||
116 !strcmp(sk_tool_utils::platform_os_emoji(), "COLR"))
117 {
118 return "\xF0\x9F\x92\xB0" "\xF0\x9F\x8F\xA1" "\xF0\x9F\x8E\x85" // ������
119 "\xF0\x9F\x8D\xAA" "\xF0\x9F\x8D\x95" "\xF0\x9F\x9A\x80" // ������
120 "\xF0\x9F\x9A\xBB" "\xF0\x9F\x92\xA9" "\xF0\x9F\x93\xB7" // ������
121 "\xF0\x9F\x93\xA6" // ��
122 "\xF0\x9F\x87\xBA" "\xF0\x9F\x87\xB8" "\xF0\x9F\x87\xA6"; // ������
123 }
124 return "";
125 }
126
platform_os_name()127 const char* platform_os_name() {
128 for (int index = 0; index < FLAGS_key.count(); index += 2) {
129 if (!strcmp("os", FLAGS_key[index])) {
130 return FLAGS_key[index + 1];
131 }
132 }
133 // when running SampleApp or dm without a --key pair, omit the platform name
134 return "";
135 }
136
137 // omit version number in returned value
major_platform_os_name()138 SkString major_platform_os_name() {
139 SkString name;
140 for (int index = 0; index < FLAGS_key.count(); index += 2) {
141 if (!strcmp("os", FLAGS_key[index])) {
142 const char* platform = FLAGS_key[index + 1];
143 const char* end = platform;
144 while (*end && (*end < '0' || *end > '9')) {
145 ++end;
146 }
147 name.append(platform, end - platform);
148 break;
149 }
150 }
151 return name;
152 }
153
platform_extra_config(const char * config)154 const char* platform_extra_config(const char* config) {
155 for (int index = 0; index < FLAGS_key.count(); index += 2) {
156 if (!strcmp("extra_config", FLAGS_key[index]) && !strcmp(config, FLAGS_key[index + 1])) {
157 return config;
158 }
159 }
160 return "";
161 }
162
colortype_name(SkColorType ct)163 const char* colortype_name(SkColorType ct) {
164 switch (ct) {
165 case kUnknown_SkColorType: return "Unknown";
166 case kAlpha_8_SkColorType: return "Alpha_8";
167 case kARGB_4444_SkColorType: return "ARGB_4444";
168 case kRGB_565_SkColorType: return "RGB_565";
169 case kRGBA_8888_SkColorType: return "RGBA_8888";
170 case kBGRA_8888_SkColorType: return "BGRA_8888";
171 case kRGBA_F16_SkColorType: return "RGBA_F16";
172 default:
173 SkASSERT(false);
174 return "unexpected colortype";
175 }
176 }
177
color_to_565(SkColor color)178 SkColor color_to_565(SkColor color) {
179 SkPMColor pmColor = SkPreMultiplyColor(color);
180 U16CPU color16 = SkPixel32ToPixel16(pmColor);
181 return SkPixel16ToColor(color16);
182 }
183
create_portable_typeface(const char * name,SkFontStyle style)184 sk_sp<SkTypeface> create_portable_typeface(const char* name, SkFontStyle style) {
185 return create_font(name, style);
186 }
187
set_portable_typeface(SkPaint * paint,const char * name,SkFontStyle style)188 void set_portable_typeface(SkPaint* paint, const char* name, SkFontStyle style) {
189 paint->setTypeface(create_font(name, style));
190 }
191
write_pixels(SkCanvas * canvas,const SkBitmap & bitmap,int x,int y,SkColorType colorType,SkAlphaType alphaType)192 void write_pixels(SkCanvas* canvas, const SkBitmap& bitmap, int x, int y,
193 SkColorType colorType, SkAlphaType alphaType) {
194 SkBitmap tmp(bitmap);
195 const SkImageInfo info = SkImageInfo::Make(tmp.width(), tmp.height(), colorType, alphaType);
196
197 canvas->writePixels(info, tmp.getPixels(), tmp.rowBytes(), x, y);
198 }
199
create_checkerboard_shader(SkColor c1,SkColor c2,int size)200 sk_sp<SkShader> create_checkerboard_shader(SkColor c1, SkColor c2, int size) {
201 SkBitmap bm;
202 bm.allocPixels(SkImageInfo::MakeS32(2 * size, 2 * size, kPremul_SkAlphaType));
203 bm.eraseColor(c1);
204 bm.eraseArea(SkIRect::MakeLTRB(0, 0, size, size), c2);
205 bm.eraseArea(SkIRect::MakeLTRB(size, size, 2 * size, 2 * size), c2);
206 return SkShader::MakeBitmapShader(
207 bm, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode);
208 }
209
create_checkerboard_bitmap(int w,int h,SkColor c1,SkColor c2,int checkSize)210 SkBitmap create_checkerboard_bitmap(int w, int h, SkColor c1, SkColor c2, int checkSize) {
211 SkBitmap bitmap;
212 bitmap.allocPixels(SkImageInfo::MakeS32(w, h, kPremul_SkAlphaType));
213 SkCanvas canvas(bitmap);
214
215 sk_tool_utils::draw_checkerboard(&canvas, c1, c2, checkSize);
216 return bitmap;
217 }
218
draw_checkerboard(SkCanvas * canvas,SkColor c1,SkColor c2,int size)219 void draw_checkerboard(SkCanvas* canvas, SkColor c1, SkColor c2, int size) {
220 SkPaint paint;
221 paint.setShader(create_checkerboard_shader(c1, c2, size));
222 paint.setBlendMode(SkBlendMode::kSrc);
223 canvas->drawPaint(paint);
224 }
225
create_string_bitmap(int w,int h,SkColor c,int x,int y,int textSize,const char * str)226 SkBitmap create_string_bitmap(int w, int h, SkColor c, int x, int y,
227 int textSize, const char* str) {
228 SkBitmap bitmap;
229 bitmap.allocN32Pixels(w, h);
230 SkCanvas canvas(bitmap);
231
232 SkPaint paint;
233 paint.setAntiAlias(true);
234 sk_tool_utils::set_portable_typeface(&paint);
235 paint.setColor(c);
236 paint.setTextSize(SkIntToScalar(textSize));
237
238 canvas.clear(0x00000000);
239 canvas.drawString(str, SkIntToScalar(x), SkIntToScalar(y), paint);
240
241 // Tag data as sRGB (without doing any color space conversion). Color-space aware configs
242 // will process this correctly but legacy configs will render as if this returned N32.
243 SkBitmap result;
244 result.setInfo(SkImageInfo::MakeS32(w, h, kPremul_SkAlphaType));
245 result.setPixelRef(sk_ref_sp(bitmap.pixelRef()), 0, 0);
246 return result;
247 }
248
add_to_text_blob(SkTextBlobBuilder * builder,const char * text,const SkPaint & origPaint,SkScalar x,SkScalar y)249 void add_to_text_blob(SkTextBlobBuilder* builder, const char* text, const SkPaint& origPaint,
250 SkScalar x, SkScalar y) {
251 SkPaint paint(origPaint);
252 SkTDArray<uint16_t> glyphs;
253
254 size_t len = strlen(text);
255 glyphs.append(paint.textToGlyphs(text, len, nullptr));
256 paint.textToGlyphs(text, len, glyphs.begin());
257
258 paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
259 const SkTextBlobBuilder::RunBuffer& run = builder->allocRun(paint, glyphs.count(), x, y,
260 nullptr);
261 memcpy(run.glyphs, glyphs.begin(), glyphs.count() * sizeof(uint16_t));
262 }
263
norm_to_rgb(SkBitmap * bm,int x,int y,const SkVector3 & norm)264 static inline void norm_to_rgb(SkBitmap* bm, int x, int y, const SkVector3& norm) {
265 SkASSERT(SkScalarNearlyEqual(norm.length(), 1.0f));
266 unsigned char r = static_cast<unsigned char>((0.5f * norm.fX + 0.5f) * 255);
267 unsigned char g = static_cast<unsigned char>((-0.5f * norm.fY + 0.5f) * 255);
268 unsigned char b = static_cast<unsigned char>((0.5f * norm.fZ + 0.5f) * 255);
269 *bm->getAddr32(x, y) = SkPackARGB32(0xFF, r, g, b);
270 }
271
create_hemi_normal_map(SkBitmap * bm,const SkIRect & dst)272 void create_hemi_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 const SkPoint halfSize = SkPoint::Make(dst.width() / 2.0f, dst.height() / 2.0f);
276
277 SkVector3 norm;
278
279 for (int y = dst.fTop; y < dst.fBottom; ++y) {
280 for (int x = dst.fLeft; x < dst.fRight; ++x) {
281 norm.fX = (x + 0.5f - center.fX) / halfSize.fX;
282 norm.fY = (y + 0.5f - center.fY) / halfSize.fY;
283
284 SkScalar tmp = norm.fX * norm.fX + norm.fY * norm.fY;
285 if (tmp >= 1.0f) {
286 norm.set(0.0f, 0.0f, 1.0f);
287 } else {
288 norm.fZ = sqrtf(1.0f - tmp);
289 }
290
291 norm_to_rgb(bm, x, y, norm);
292 }
293 }
294 }
295
create_frustum_normal_map(SkBitmap * bm,const SkIRect & dst)296 void create_frustum_normal_map(SkBitmap* bm, const SkIRect& dst) {
297 const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f),
298 dst.fTop + (dst.height() / 2.0f));
299
300 SkIRect inner = dst;
301 inner.inset(dst.width()/4, dst.height()/4);
302
303 SkPoint3 norm;
304 const SkPoint3 left = SkPoint3::Make(-SK_ScalarRoot2Over2, 0.0f, SK_ScalarRoot2Over2);
305 const SkPoint3 up = SkPoint3::Make(0.0f, -SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);
306 const SkPoint3 right = SkPoint3::Make(SK_ScalarRoot2Over2, 0.0f, SK_ScalarRoot2Over2);
307 const SkPoint3 down = SkPoint3::Make(0.0f, SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);
308
309 for (int y = dst.fTop; y < dst.fBottom; ++y) {
310 for (int x = dst.fLeft; x < dst.fRight; ++x) {
311 if (inner.contains(x, y)) {
312 norm.set(0.0f, 0.0f, 1.0f);
313 } else {
314 SkScalar locX = x + 0.5f - center.fX;
315 SkScalar locY = y + 0.5f - center.fY;
316
317 if (locX >= 0.0f) {
318 if (locY > 0.0f) {
319 norm = locX >= locY ? right : down; // LR corner
320 } else {
321 norm = locX > -locY ? right : up; // UR corner
322 }
323 } else {
324 if (locY > 0.0f) {
325 norm = -locX > locY ? left : down; // LL corner
326 } else {
327 norm = locX > locY ? up : left; // UL corner
328 }
329 }
330 }
331
332 norm_to_rgb(bm, x, y, norm);
333 }
334 }
335 }
336
create_tetra_normal_map(SkBitmap * bm,const SkIRect & dst)337 void create_tetra_normal_map(SkBitmap* bm, const SkIRect& dst) {
338 const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f),
339 dst.fTop + (dst.height() / 2.0f));
340
341 static const SkScalar k1OverRoot3 = 0.5773502692f;
342
343 SkPoint3 norm;
344 const SkPoint3 leftUp = SkPoint3::Make(-k1OverRoot3, -k1OverRoot3, k1OverRoot3);
345 const SkPoint3 rightUp = SkPoint3::Make(k1OverRoot3, -k1OverRoot3, k1OverRoot3);
346 const SkPoint3 down = SkPoint3::Make(0.0f, SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);
347
348 for (int y = dst.fTop; y < dst.fBottom; ++y) {
349 for (int x = dst.fLeft; x < dst.fRight; ++x) {
350 SkScalar locX = x + 0.5f - center.fX;
351 SkScalar locY = y + 0.5f - center.fY;
352
353 if (locX >= 0.0f) {
354 if (locY > 0.0f) {
355 norm = locX >= locY ? rightUp : down; // LR corner
356 } else {
357 norm = rightUp;
358 }
359 } else {
360 if (locY > 0.0f) {
361 norm = -locX > locY ? leftUp : down; // LL corner
362 } else {
363 norm = leftUp;
364 }
365 }
366
367 norm_to_rgb(bm, x, y, norm);
368 }
369 }
370 }
371
372 #if defined(_MSC_VER)
373 // MSVC takes ~2 minutes to compile this function with optimization.
374 // We don't really care to wait that long for this function.
375 #pragma optimize("", off)
376 #endif
make_big_path(SkPath & path)377 void make_big_path(SkPath& path) {
378 #include "BigPathBench.inc"
379 }
380
gaussian2d_value(int x,int y,float sigma)381 static float gaussian2d_value(int x, int y, float sigma) {
382 // don't bother with the scale term since we're just going to normalize the
383 // kernel anyways
384 float temp = expf(-(x*x + y*y)/(2*sigma*sigma));
385 return temp;
386 }
387
create_2d_kernel(float sigma,int * filterSize)388 static float* create_2d_kernel(float sigma, int* filterSize) {
389 // We will actually take 2*halfFilterSize+1 samples (i.e., our filter kernel
390 // sizes are always odd)
391 int halfFilterSize = SkScalarCeilToInt(6*sigma)/2;
392 int wh = *filterSize = 2*halfFilterSize + 1;
393
394 float* temp = new float[wh*wh];
395
396 float filterTot = 0.0f;
397 for (int yOff = 0; yOff < wh; ++yOff) {
398 for (int xOff = 0; xOff < wh; ++xOff) {
399 temp[yOff*wh+xOff] = gaussian2d_value(xOff-halfFilterSize, yOff-halfFilterSize, sigma);
400
401 filterTot += temp[yOff*wh+xOff];
402 }
403 }
404
405 // normalize the kernel
406 for (int yOff = 0; yOff < wh; ++yOff) {
407 for (int xOff = 0; xOff < wh; ++xOff) {
408 temp[yOff*wh+xOff] /= filterTot;
409 }
410 }
411
412 return temp;
413 }
414
blur_pixel(const SkBitmap & bm,int x,int y,float * kernel,int wh)415 static SkPMColor blur_pixel(const SkBitmap& bm, int x, int y, float* kernel, int wh) {
416 SkASSERT(wh & 0x1);
417
418 int halfFilterSize = (wh-1)/2;
419
420 float r = 0.0f, g = 0.0f, b = 0.0f;
421 for (int yOff = 0; yOff < wh; ++yOff) {
422 int ySamp = y + yOff - halfFilterSize;
423
424 if (ySamp < 0) {
425 ySamp = 0;
426 } else if (ySamp > bm.height()-1) {
427 ySamp = bm.height()-1;
428 }
429
430 for (int xOff = 0; xOff < wh; ++xOff) {
431 int xSamp = x + xOff - halfFilterSize;
432
433 if (xSamp < 0) {
434 xSamp = 0;
435 } else if (xSamp > bm.width()-1) {
436 xSamp = bm.width()-1;
437 }
438
439 float filter = kernel[yOff*wh + xOff];
440
441 SkPMColor c = *bm.getAddr32(xSamp, ySamp);
442
443 r += SkGetPackedR32(c) * filter;
444 g += SkGetPackedG32(c) * filter;
445 b += SkGetPackedB32(c) * filter;
446 }
447 }
448
449 U8CPU r8, g8, b8;
450
451 r8 = (U8CPU) (r+0.5f);
452 g8 = (U8CPU) (g+0.5f);
453 b8 = (U8CPU) (b+0.5f);
454
455 return SkPackARGB32(255, r8, g8, b8);
456 }
457
slow_blur(const SkBitmap & src,float sigma)458 SkBitmap slow_blur(const SkBitmap& src, float sigma) {
459 SkBitmap dst;
460
461 dst.allocN32Pixels(src.width(), src.height(), true);
462
463 int wh;
464 std::unique_ptr<float[]> kernel(create_2d_kernel(sigma, &wh));
465
466 for (int y = 0; y < src.height(); ++y) {
467 for (int x = 0; x < src.width(); ++x) {
468 *dst.getAddr32(x, y) = blur_pixel(src, x, y, kernel.get(), wh);
469 }
470 }
471
472 return dst;
473 }
474
475 // compute the intersection point between the diagonal and the ellipse in the
476 // lower right corner
intersection(SkScalar w,SkScalar h)477 static SkPoint intersection(SkScalar w, SkScalar h) {
478 SkASSERT(w > 0.0f || h > 0.0f);
479
480 return SkPoint::Make(w / SK_ScalarSqrt2, h / SK_ScalarSqrt2);
481 }
482
483 // Use the intersection of the corners' diagonals with their ellipses to shrink
484 // the bounding rect
compute_central_occluder(const SkRRect & rr)485 SkRect compute_central_occluder(const SkRRect& rr) {
486 const SkRect r = rr.getBounds();
487
488 SkScalar newL = r.fLeft, newT = r.fTop, newR = r.fRight, newB = r.fBottom;
489
490 SkVector radii = rr.radii(SkRRect::kUpperLeft_Corner);
491 if (!radii.isZero()) {
492 SkPoint p = intersection(radii.fX, radii.fY);
493
494 newL = SkTMax(newL, r.fLeft + radii.fX - p.fX);
495 newT = SkTMax(newT, r.fTop + radii.fY - p.fY);
496 }
497
498 radii = rr.radii(SkRRect::kUpperRight_Corner);
499 if (!radii.isZero()) {
500 SkPoint p = intersection(radii.fX, radii.fY);
501
502 newR = SkTMin(newR, r.fRight + p.fX - radii.fX);
503 newT = SkTMax(newT, r.fTop + radii.fY - p.fY);
504 }
505
506 radii = rr.radii(SkRRect::kLowerRight_Corner);
507 if (!radii.isZero()) {
508 SkPoint p = intersection(radii.fX, radii.fY);
509
510 newR = SkTMin(newR, r.fRight + p.fX - radii.fX);
511 newB = SkTMin(newB, r.fBottom - radii.fY + p.fY);
512 }
513
514 radii = rr.radii(SkRRect::kLowerLeft_Corner);
515 if (!radii.isZero()) {
516 SkPoint p = intersection(radii.fX, radii.fY);
517
518 newL = SkTMax(newL, r.fLeft + radii.fX - p.fX);
519 newB = SkTMin(newB, r.fBottom - radii.fY + p.fY);
520 }
521
522 return SkRect::MakeLTRB(newL, newT, newR, newB);
523 }
524
525 // The widest inset rect
compute_widest_occluder(const SkRRect & rr)526 SkRect compute_widest_occluder(const SkRRect& rr) {
527 const SkRect& r = rr.getBounds();
528
529 const SkVector& ul = rr.radii(SkRRect::kUpperLeft_Corner);
530 const SkVector& ur = rr.radii(SkRRect::kUpperRight_Corner);
531 const SkVector& lr = rr.radii(SkRRect::kLowerRight_Corner);
532 const SkVector& ll = rr.radii(SkRRect::kLowerLeft_Corner);
533
534 SkScalar maxT = SkTMax(ul.fY, ur.fY);
535 SkScalar maxB = SkTMax(ll.fY, lr.fY);
536
537 return SkRect::MakeLTRB(r.fLeft, r.fTop + maxT, r.fRight, r.fBottom - maxB);
538
539 }
540
541 // The tallest inset rect
compute_tallest_occluder(const SkRRect & rr)542 SkRect compute_tallest_occluder(const SkRRect& rr) {
543 const SkRect& r = rr.getBounds();
544
545 const SkVector& ul = rr.radii(SkRRect::kUpperLeft_Corner);
546 const SkVector& ur = rr.radii(SkRRect::kUpperRight_Corner);
547 const SkVector& lr = rr.radii(SkRRect::kLowerRight_Corner);
548 const SkVector& ll = rr.radii(SkRRect::kLowerLeft_Corner);
549
550 SkScalar maxL = SkTMax(ul.fX, ll.fX);
551 SkScalar maxR = SkTMax(ur.fX, lr.fX);
552
553 return SkRect::MakeLTRB(r.fLeft + maxL, r.fTop, r.fRight - maxR, r.fBottom);
554 }
555
copy_to(SkBitmap * dst,SkColorType dstColorType,const SkBitmap & src)556 bool copy_to(SkBitmap* dst, SkColorType dstColorType, const SkBitmap& src) {
557 SkPixmap srcPM;
558 if (!src.peekPixels(&srcPM)) {
559 return false;
560 }
561
562 SkBitmap tmpDst;
563 SkImageInfo dstInfo = srcPM.info().makeColorType(dstColorType);
564 if (!tmpDst.setInfo(dstInfo)) {
565 return false;
566 }
567
568 if (!tmpDst.tryAllocPixels()) {
569 return false;
570 }
571
572 SkPixmap dstPM;
573 if (!tmpDst.peekPixels(&dstPM)) {
574 return false;
575 }
576
577 if (!srcPM.readPixels(dstPM)) {
578 return false;
579 }
580
581 dst->swap(tmpDst);
582 return true;
583 }
584
copy_to_g8(SkBitmap * dst,const SkBitmap & src)585 void copy_to_g8(SkBitmap* dst, const SkBitmap& src) {
586 SkASSERT(kBGRA_8888_SkColorType == src.colorType() ||
587 kRGBA_8888_SkColorType == src.colorType());
588
589 SkImageInfo grayInfo = src.info().makeColorType(kGray_8_SkColorType);
590 dst->allocPixels(grayInfo);
591 uint8_t* dst8 = (uint8_t*)dst->getPixels();
592 const uint32_t* src32 = (const uint32_t*)src.getPixels();
593
594 const int w = src.width();
595 const int h = src.height();
596 const bool isBGRA = (kBGRA_8888_SkColorType == src.colorType());
597 for (int y = 0; y < h; ++y) {
598 if (isBGRA) {
599 // BGRA
600 for (int x = 0; x < w; ++x) {
601 uint32_t s = src32[x];
602 dst8[x] = SkComputeLuminance((s >> 16) & 0xFF, (s >> 8) & 0xFF, s & 0xFF);
603 }
604 } else {
605 // RGBA
606 for (int x = 0; x < w; ++x) {
607 uint32_t s = src32[x];
608 dst8[x] = SkComputeLuminance(s & 0xFF, (s >> 8) & 0xFF, (s >> 16) & 0xFF);
609 }
610 }
611 src32 = (const uint32_t*)((const char*)src32 + src.rowBytes());
612 dst8 += dst->rowBytes();
613 }
614 }
615
616 } // namespace sk_tool_utils
617