blob: 0383897bd8e5fe35fbca1d2a71e4b963c5b77029 [file] [log] [blame]
bungeman13b9c952016-05-12 10:09:30 -07001/*
tfarina20108912014-06-21 10:54:17 -07002 * 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
commit-bot@chromium.org4cd9e212014-03-07 03:25:16 +00008#include "sk_tool_utils.h"
Cary Clark992c7b02014-07-31 08:58:44 -04009#include "sk_tool_utils_flags.h"
commit-bot@chromium.org4cd9e212014-03-07 03:25:16 +000010
caryclarkc3dcb672015-07-21 12:27:36 -070011#include "Resources.h"
tfarina20108912014-06-21 10:54:17 -070012#include "SkBitmap.h"
13#include "SkCanvas.h"
caryclark6531c362015-07-20 13:38:56 -070014#include "SkCommonFlags.h"
kulshinc4b09152016-06-01 08:31:28 -070015#include "SkFontMgr.h"
16#include "SkFontStyle.h"
Brian Osman2b25d342016-12-20 11:09:31 -050017#include "SkPixelRef.h"
robertphillipsea4529d2015-08-17 15:04:47 -070018#include "SkPoint3.h"
halcanaryb0cce2c2015-01-26 12:49:00 -080019#include "SkShader.h"
Cary Clark992c7b02014-07-31 08:58:44 -040020#include "SkTestScalerContext.h"
joshualitt9e36c1a2015-04-14 12:17:27 -070021#include "SkTextBlob.h"
Cary Clark992c7b02014-07-31 08:58:44 -040022
23DEFINE_bool(portableFonts, false, "Use portable fonts");
tfarina20108912014-06-21 10:54:17 -070024
Brian Osman964dec32017-01-26 09:32:33 -050025#if SK_SUPPORT_GPU
26#include "effects/GrSRGBEffect.h"
27#include "SkColorFilter.h"
28
29// Color filter that just wraps GrSRGBEffect
30class SkSRGBColorFilter : public SkColorFilter {
31public:
32 static sk_sp<SkColorFilter> Make(GrSRGBEffect::Mode mode) {
33 return sk_sp<SkColorFilter>(new SkSRGBColorFilter(mode));
34 }
35
36 sk_sp<GrFragmentProcessor> asFragmentProcessor(GrContext*, SkColorSpace*) const override {
37 return GrSRGBEffect::Make(fMode);
38 }
39
40 void filterSpan(const SkPMColor src[], int count, SkPMColor dst[]) const override {
41 SK_ABORT("SkSRGBColorFilter is only implemented for GPU");
42 }
43 Factory getFactory() const override { return nullptr; }
44
45#ifndef SK_IGNORE_TO_STRING
46 void toString(SkString* str) const override {}
47#endif
48
49private:
50 SkSRGBColorFilter(GrSRGBEffect::Mode mode) : fMode(mode) {}
51
52 GrSRGBEffect::Mode fMode;
53 typedef SkColorFilter INHERITED;
54};
55#endif
56
commit-bot@chromium.org4cd9e212014-03-07 03:25:16 +000057namespace sk_tool_utils {
58
caryclark37213552015-07-24 11:08:01 -070059/* these are the default fonts chosen by Chrome for serif, sans-serif, and monospace */
60static const char* gStandardFontNames[][3] = {
61 { "Times", "Helvetica", "Courier" }, // Mac
62 { "Times New Roman", "Helvetica", "Courier" }, // iOS
63 { "Times New Roman", "Arial", "Courier New" }, // Win
64 { "Times New Roman", "Arial", "Monospace" }, // Ubuntu
caryclark1818acb2015-07-24 12:09:25 -070065 { "serif", "sans-serif", "monospace" }, // Android
caryclark37213552015-07-24 11:08:01 -070066 { "Tinos", "Arimo", "Cousine" } // ChromeOS
67};
68
69const char* platform_font_name(const char* name) {
70 SkString platform = major_platform_os_name();
71 int index;
72 if (!strcmp(name, "serif")) {
73 index = 0;
74 } else if (!strcmp(name, "san-serif")) {
75 index = 1;
76 } else if (!strcmp(name, "monospace")) {
77 index = 2;
78 } else {
79 return name;
80 }
81 if (platform.equals("Mac")) {
82 return gStandardFontNames[0][index];
83 }
84 if (platform.equals("iOS")) {
85 return gStandardFontNames[1][index];
86 }
87 if (platform.equals("Win")) {
88 return gStandardFontNames[2][index];
89 }
90 if (platform.equals("Ubuntu")) {
91 return gStandardFontNames[3][index];
92 }
93 if (platform.equals("Android")) {
94 return gStandardFontNames[4][index];
95 }
96 if (platform.equals("ChromeOS")) {
97 return gStandardFontNames[5][index];
98 }
99 return name;
100}
101
caryclarkc3dcb672015-07-21 12:27:36 -0700102const char* platform_os_emoji() {
103 const char* osName = platform_os_name();
caryclarke6633412015-07-23 09:11:58 -0700104 if (!strcmp(osName, "Android") || !strcmp(osName, "Ubuntu")) {
caryclarkc3dcb672015-07-21 12:27:36 -0700105 return "CBDT";
106 }
bungemanfbbf01a2016-07-20 07:15:16 -0700107 if (!strncmp(osName, "Mac", 3) || !strncmp(osName, "iOS", 3)) {
caryclarkc3dcb672015-07-21 12:27:36 -0700108 return "SBIX";
109 }
kulshinc4b09152016-06-01 08:31:28 -0700110 if (!strncmp(osName, "Win", 3)) {
111 return "COLR";
112 }
caryclarkc3dcb672015-07-21 12:27:36 -0700113 return "";
114}
115
bungeman13b9c952016-05-12 10:09:30 -0700116sk_sp<SkTypeface> emoji_typeface() {
caryclarkc3dcb672015-07-21 12:27:36 -0700117 if (!strcmp(sk_tool_utils::platform_os_emoji(), "CBDT")) {
bungeman13b9c952016-05-12 10:09:30 -0700118 return MakeResourceAsTypeface("/fonts/Funkster.ttf");
caryclarkc3dcb672015-07-21 12:27:36 -0700119 }
120 if (!strcmp(sk_tool_utils::platform_os_emoji(), "SBIX")) {
mbocee6a9912016-05-31 11:42:36 -0700121 return SkTypeface::MakeFromName("Apple Color Emoji", SkFontStyle());
caryclarkc3dcb672015-07-21 12:27:36 -0700122 }
kulshinc4b09152016-06-01 08:31:28 -0700123 if (!strcmp(sk_tool_utils::platform_os_emoji(), "COLR")) {
124 sk_sp<SkFontMgr> fm(SkFontMgr::RefDefault());
125 const char *colorEmojiFontName = "Segoe UI Emoji";
126 sk_sp<SkTypeface> typeface(fm->matchFamilyStyle(colorEmojiFontName, SkFontStyle()));
127 if (typeface) {
128 return typeface;
129 }
130 sk_sp<SkTypeface> fallback(fm->matchFamilyStyleCharacter(
131 colorEmojiFontName, SkFontStyle(), nullptr /* bcp47 */, 0 /* bcp47Count */,
132 0x1f4b0 /* character: 💰 */));
133 if (fallback) {
134 return fallback;
135 }
136 // If we don't have Segoe UI Emoji and can't find a fallback, try Segoe UI Symbol.
137 // Windows 7 does not have Segoe UI Emoji; Segoe UI Symbol has the (non - color) emoji.
138 return SkTypeface::MakeFromName("Segoe UI Symbol", SkFontStyle());
139 }
bungeman13b9c952016-05-12 10:09:30 -0700140 return nullptr;
caryclarkc3dcb672015-07-21 12:27:36 -0700141}
142
143const char* emoji_sample_text() {
144 if (!strcmp(sk_tool_utils::platform_os_emoji(), "CBDT")) {
145 return "Hamburgefons";
halcanary9d524f22016-03-29 09:03:52 -0700146 }
kulshinc4b09152016-06-01 08:31:28 -0700147 if (!strcmp(sk_tool_utils::platform_os_emoji(), "SBIX") ||
148 !strcmp(sk_tool_utils::platform_os_emoji(), "COLR"))
149 {
caryclarkc3dcb672015-07-21 12:27:36 -0700150 return "\xF0\x9F\x92\xB0" "\xF0\x9F\x8F\xA1" "\xF0\x9F\x8E\x85" // 💰🏡🎅
151 "\xF0\x9F\x8D\xAA" "\xF0\x9F\x8D\x95" "\xF0\x9F\x9A\x80" // 🍪🍕🚀
152 "\xF0\x9F\x9A\xBB" "\xF0\x9F\x92\xA9" "\xF0\x9F\x93\xB7" // 🚻💩📷
153 "\xF0\x9F\x93\xA6" // 📦
154 "\xF0\x9F\x87\xBA" "\xF0\x9F\x87\xB8" "\xF0\x9F\x87\xA6"; // 🇺🇸🇦
155 }
156 return "";
157}
158
caryclark6531c362015-07-20 13:38:56 -0700159const char* platform_os_name() {
160 for (int index = 0; index < FLAGS_key.count(); index += 2) {
161 if (!strcmp("os", FLAGS_key[index])) {
162 return FLAGS_key[index + 1];
163 }
164 }
165 // when running SampleApp or dm without a --key pair, omit the platform name
166 return "";
167}
168
caryclark37213552015-07-24 11:08:01 -0700169// omit version number in returned value
170SkString major_platform_os_name() {
171 SkString name;
172 for (int index = 0; index < FLAGS_key.count(); index += 2) {
173 if (!strcmp("os", FLAGS_key[index])) {
174 const char* platform = FLAGS_key[index + 1];
175 const char* end = platform;
176 while (*end && (*end < '0' || *end > '9')) {
177 ++end;
178 }
179 name.append(platform, end - platform);
180 break;
181 }
182 }
183 return name;
184}
185
caryclark6531c362015-07-20 13:38:56 -0700186const char* platform_extra_config(const char* config) {
187 for (int index = 0; index < FLAGS_key.count(); index += 2) {
188 if (!strcmp("extra_config", FLAGS_key[index]) && !strcmp(config, FLAGS_key[index + 1])) {
189 return config;
190 }
191 }
192 return "";
193}
194
commit-bot@chromium.orga713f9c2014-03-17 21:31:26 +0000195const char* colortype_name(SkColorType ct) {
196 switch (ct) {
197 case kUnknown_SkColorType: return "Unknown";
198 case kAlpha_8_SkColorType: return "Alpha_8";
199 case kIndex_8_SkColorType: return "Index_8";
200 case kARGB_4444_SkColorType: return "ARGB_4444";
201 case kRGB_565_SkColorType: return "RGB_565";
202 case kRGBA_8888_SkColorType: return "RGBA_8888";
203 case kBGRA_8888_SkColorType: return "BGRA_8888";
204 default:
205 SkASSERT(false);
206 return "unexpected colortype";
207 }
208}
209
caryclark65cdba62015-06-15 06:51:08 -0700210SkColor color_to_565(SkColor color) {
211 SkPMColor pmColor = SkPreMultiplyColor(color);
caryclarkd85093c2015-06-12 11:49:04 -0700212 U16CPU color16 = SkPixel32ToPixel16(pmColor);
caryclark65cdba62015-06-15 06:51:08 -0700213 return SkPixel16ToColor(color16);
caryclarkd85093c2015-06-12 11:49:04 -0700214}
215
mbocee6a9912016-05-31 11:42:36 -0700216sk_sp<SkTypeface> create_portable_typeface(const char* name, SkFontStyle style) {
caryclark83ca6282015-06-10 09:31:09 -0700217 return create_font(name, style);
218}
219
mbocee6a9912016-05-31 11:42:36 -0700220void set_portable_typeface(SkPaint* paint, const char* name, SkFontStyle style) {
bungeman13b9c952016-05-12 10:09:30 -0700221 paint->setTypeface(create_font(name, style));
caryclark83ca6282015-06-10 09:31:09 -0700222}
halcanary9d524f22016-03-29 09:03:52 -0700223
commit-bot@chromium.org4cd9e212014-03-07 03:25:16 +0000224void write_pixels(SkCanvas* canvas, const SkBitmap& bitmap, int x, int y,
225 SkColorType colorType, SkAlphaType alphaType) {
226 SkBitmap tmp(bitmap);
227 tmp.lockPixels();
skia.committer@gmail.come62513f2014-03-08 03:02:06 +0000228
reede5ea5002014-09-03 11:54:58 -0700229 const SkImageInfo info = SkImageInfo::Make(tmp.width(), tmp.height(), colorType, alphaType);
skia.committer@gmail.come62513f2014-03-08 03:02:06 +0000230
commit-bot@chromium.org4cd9e212014-03-07 03:25:16 +0000231 canvas->writePixels(info, tmp.getPixels(), tmp.rowBytes(), x, y);
232}
233
reed8a21c9f2016-03-08 18:50:00 -0800234sk_sp<SkShader> create_checkerboard_shader(SkColor c1, SkColor c2, int size) {
halcanaryb0cce2c2015-01-26 12:49:00 -0800235 SkBitmap bm;
brianosman2331a5f2016-09-28 14:02:10 -0700236 bm.allocPixels(SkImageInfo::MakeS32(2 * size, 2 * size, kPremul_SkAlphaType));
halcanaryb0cce2c2015-01-26 12:49:00 -0800237 bm.eraseColor(c1);
238 bm.eraseArea(SkIRect::MakeLTRB(0, 0, size, size), c2);
239 bm.eraseArea(SkIRect::MakeLTRB(size, size, 2 * size, 2 * size), c2);
reed8a21c9f2016-03-08 18:50:00 -0800240 return SkShader::MakeBitmapShader(
halcanaryb0cce2c2015-01-26 12:49:00 -0800241 bm, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode);
242}
243
robertphillips943a4622015-09-03 13:32:33 -0700244SkBitmap create_checkerboard_bitmap(int w, int h, SkColor c1, SkColor c2, int checkSize) {
245 SkBitmap bitmap;
brianosman2331a5f2016-09-28 14:02:10 -0700246 bitmap.allocPixels(SkImageInfo::MakeS32(w, h, kPremul_SkAlphaType));
robertphillips943a4622015-09-03 13:32:33 -0700247 SkCanvas canvas(bitmap);
248
249 sk_tool_utils::draw_checkerboard(&canvas, c1, c2, checkSize);
250 return bitmap;
251}
252
halcanaryb0cce2c2015-01-26 12:49:00 -0800253void draw_checkerboard(SkCanvas* canvas, SkColor c1, SkColor c2, int size) {
254 SkPaint paint;
reed8a21c9f2016-03-08 18:50:00 -0800255 paint.setShader(create_checkerboard_shader(c1, c2, size));
reed374772b2016-10-05 17:33:02 -0700256 paint.setBlendMode(SkBlendMode::kSrc);
halcanaryb0cce2c2015-01-26 12:49:00 -0800257 canvas->drawPaint(paint);
258}
259
robertphillips943a4622015-09-03 13:32:33 -0700260SkBitmap create_string_bitmap(int w, int h, SkColor c, int x, int y,
261 int textSize, const char* str) {
262 SkBitmap bitmap;
263 bitmap.allocN32Pixels(w, h);
264 SkCanvas canvas(bitmap);
265
266 SkPaint paint;
267 paint.setAntiAlias(true);
268 sk_tool_utils::set_portable_typeface(&paint);
269 paint.setColor(c);
270 paint.setTextSize(SkIntToScalar(textSize));
271
272 canvas.clear(0x00000000);
273 canvas.drawText(str, strlen(str), SkIntToScalar(x), SkIntToScalar(y), paint);
274
Brian Osman2b25d342016-12-20 11:09:31 -0500275 // Tag data as sRGB (without doing any color space conversion). Color-space aware configs
276 // will process this correctly but legacy configs will render as if this returned N32.
277 SkBitmap result;
278 result.setInfo(SkImageInfo::MakeS32(w, h, kPremul_SkAlphaType));
279 result.setPixelRef(sk_ref_sp(bitmap.pixelRef()), 0, 0);
280 return result;
robertphillips943a4622015-09-03 13:32:33 -0700281}
282
joshualitt9e36c1a2015-04-14 12:17:27 -0700283void add_to_text_blob(SkTextBlobBuilder* builder, const char* text, const SkPaint& origPaint,
284 SkScalar x, SkScalar y) {
285 SkPaint paint(origPaint);
286 SkTDArray<uint16_t> glyphs;
287
288 size_t len = strlen(text);
halcanary96fcdcc2015-08-27 07:41:13 -0700289 glyphs.append(paint.textToGlyphs(text, len, nullptr));
joshualitt9e36c1a2015-04-14 12:17:27 -0700290 paint.textToGlyphs(text, len, glyphs.begin());
291
292 paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
293 const SkTextBlobBuilder::RunBuffer& run = builder->allocRun(paint, glyphs.count(), x, y,
halcanary96fcdcc2015-08-27 07:41:13 -0700294 nullptr);
joshualitt9e36c1a2015-04-14 12:17:27 -0700295 memcpy(run.glyphs, glyphs.begin(), glyphs.count() * sizeof(uint16_t));
296}
297
robertphillipsea4529d2015-08-17 15:04:47 -0700298static inline void norm_to_rgb(SkBitmap* bm, int x, int y, const SkVector3& norm) {
299 SkASSERT(SkScalarNearlyEqual(norm.length(), 1.0f));
300 unsigned char r = static_cast<unsigned char>((0.5f * norm.fX + 0.5f) * 255);
301 unsigned char g = static_cast<unsigned char>((-0.5f * norm.fY + 0.5f) * 255);
302 unsigned char b = static_cast<unsigned char>((0.5f * norm.fZ + 0.5f) * 255);
303 *bm->getAddr32(x, y) = SkPackARGB32(0xFF, r, g, b);
304}
305
306void create_hemi_normal_map(SkBitmap* bm, const SkIRect& dst) {
307 const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f),
308 dst.fTop + (dst.height() / 2.0f));
309 const SkPoint halfSize = SkPoint::Make(dst.width() / 2.0f, dst.height() / 2.0f);
310
311 SkVector3 norm;
312
313 for (int y = dst.fTop; y < dst.fBottom; ++y) {
314 for (int x = dst.fLeft; x < dst.fRight; ++x) {
315 norm.fX = (x + 0.5f - center.fX) / halfSize.fX;
316 norm.fY = (y + 0.5f - center.fY) / halfSize.fY;
halcanary9d524f22016-03-29 09:03:52 -0700317
robertphillipsea4529d2015-08-17 15:04:47 -0700318 SkScalar tmp = norm.fX * norm.fX + norm.fY * norm.fY;
319 if (tmp >= 1.0f) {
320 norm.set(0.0f, 0.0f, 1.0f);
321 } else {
bsalomonf3bf8922015-08-19 06:12:36 -0700322 norm.fZ = sqrtf(1.0f - tmp);
robertphillipsea4529d2015-08-17 15:04:47 -0700323 }
324
325 norm_to_rgb(bm, x, y, norm);
326 }
327 }
328}
329
330void create_frustum_normal_map(SkBitmap* bm, const SkIRect& dst) {
331 const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f),
332 dst.fTop + (dst.height() / 2.0f));
333
334 SkIRect inner = dst;
335 inner.inset(dst.width()/4, dst.height()/4);
336
337 SkPoint3 norm;
338 const SkPoint3 left = SkPoint3::Make(-SK_ScalarRoot2Over2, 0.0f, SK_ScalarRoot2Over2);
339 const SkPoint3 up = SkPoint3::Make(0.0f, -SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);
340 const SkPoint3 right = SkPoint3::Make(SK_ScalarRoot2Over2, 0.0f, SK_ScalarRoot2Over2);
341 const SkPoint3 down = SkPoint3::Make(0.0f, SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);
342
343 for (int y = dst.fTop; y < dst.fBottom; ++y) {
344 for (int x = dst.fLeft; x < dst.fRight; ++x) {
345 if (inner.contains(x, y)) {
346 norm.set(0.0f, 0.0f, 1.0f);
347 } else {
348 SkScalar locX = x + 0.5f - center.fX;
349 SkScalar locY = y + 0.5f - center.fY;
350
351 if (locX >= 0.0f) {
352 if (locY > 0.0f) {
353 norm = locX >= locY ? right : down; // LR corner
354 } else {
355 norm = locX > -locY ? right : up; // UR corner
halcanary9d524f22016-03-29 09:03:52 -0700356 }
robertphillipsea4529d2015-08-17 15:04:47 -0700357 } else {
358 if (locY > 0.0f) {
359 norm = -locX > locY ? left : down; // LL corner
360 } else {
361 norm = locX > locY ? up : left; // UL corner
halcanary9d524f22016-03-29 09:03:52 -0700362 }
robertphillipsea4529d2015-08-17 15:04:47 -0700363 }
364 }
365
366 norm_to_rgb(bm, x, y, norm);
367 }
368 }
369}
370
371void create_tetra_normal_map(SkBitmap* bm, const SkIRect& dst) {
372 const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f),
373 dst.fTop + (dst.height() / 2.0f));
374
375 static const SkScalar k1OverRoot3 = 0.5773502692f;
376
377 SkPoint3 norm;
378 const SkPoint3 leftUp = SkPoint3::Make(-k1OverRoot3, -k1OverRoot3, k1OverRoot3);
379 const SkPoint3 rightUp = SkPoint3::Make(k1OverRoot3, -k1OverRoot3, k1OverRoot3);
380 const SkPoint3 down = SkPoint3::Make(0.0f, SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);
381
382 for (int y = dst.fTop; y < dst.fBottom; ++y) {
383 for (int x = dst.fLeft; x < dst.fRight; ++x) {
384 SkScalar locX = x + 0.5f - center.fX;
385 SkScalar locY = y + 0.5f - center.fY;
386
387 if (locX >= 0.0f) {
388 if (locY > 0.0f) {
389 norm = locX >= locY ? rightUp : down; // LR corner
390 } else {
391 norm = rightUp;
halcanary9d524f22016-03-29 09:03:52 -0700392 }
robertphillipsea4529d2015-08-17 15:04:47 -0700393 } else {
394 if (locY > 0.0f) {
395 norm = -locX > locY ? leftUp : down; // LL corner
396 } else {
397 norm = leftUp;
halcanary9d524f22016-03-29 09:03:52 -0700398 }
robertphillipsea4529d2015-08-17 15:04:47 -0700399 }
400
401 norm_to_rgb(bm, x, y, norm);
402 }
403 }
404}
joshualitt9e36c1a2015-04-14 12:17:27 -0700405
Mike Klein88fa7472016-10-12 17:06:48 -0400406#if defined(_MSC_VER)
407 // MSVC takes ~2 minutes to compile this function with optimization.
408 // We don't really care to wait that long for this function.
409 #pragma optimize("", off)
410#endif
joshualitt98d2e2f2015-10-05 07:23:30 -0700411void make_big_path(SkPath& path) {
412 #include "BigPathBench.inc"
413}
414
robertphillips9c4909b2015-10-19 06:39:17 -0700415static float gaussian2d_value(int x, int y, float sigma) {
416 // don't bother with the scale term since we're just going to normalize the
417 // kernel anyways
bsalomon2f8ac352015-10-19 08:29:16 -0700418 float temp = expf(-(x*x + y*y)/(2*sigma*sigma));
robertphillips9c4909b2015-10-19 06:39:17 -0700419 return temp;
420}
421
422static float* create_2d_kernel(float sigma, int* filterSize) {
423 // We will actually take 2*halfFilterSize+1 samples (i.e., our filter kernel
424 // sizes are always odd)
425 int halfFilterSize = SkScalarCeilToInt(6*sigma)/2;
426 int wh = *filterSize = 2*halfFilterSize + 1;
427
428 float* temp = new float[wh*wh];
429
430 float filterTot = 0.0f;
431 for (int yOff = 0; yOff < wh; ++yOff) {
432 for (int xOff = 0; xOff < wh; ++xOff) {
433 temp[yOff*wh+xOff] = gaussian2d_value(xOff-halfFilterSize, yOff-halfFilterSize, sigma);
434
435 filterTot += temp[yOff*wh+xOff];
436 }
437 }
438
439 // normalize the kernel
440 for (int yOff = 0; yOff < wh; ++yOff) {
441 for (int xOff = 0; xOff < wh; ++xOff) {
442 temp[yOff*wh+xOff] /= filterTot;
443 }
444 }
445
446 return temp;
447}
448
449static SkPMColor blur_pixel(const SkBitmap& bm, int x, int y, float* kernel, int wh) {
450 SkASSERT(wh & 0x1);
451
452 int halfFilterSize = (wh-1)/2;
453
454 float r = 0.0f, g = 0.0f, b = 0.0f;
455 for (int yOff = 0; yOff < wh; ++yOff) {
456 int ySamp = y + yOff - halfFilterSize;
457
458 if (ySamp < 0) {
459 ySamp = 0;
460 } else if (ySamp > bm.height()-1) {
461 ySamp = bm.height()-1;
462 }
463
464 for (int xOff = 0; xOff < wh; ++xOff) {
465 int xSamp = x + xOff - halfFilterSize;
466
467 if (xSamp < 0) {
468 xSamp = 0;
469 } else if (xSamp > bm.width()-1) {
470 xSamp = bm.width()-1;
471 }
472
473 float filter = kernel[yOff*wh + xOff];
474
475 SkPMColor c = *bm.getAddr32(xSamp, ySamp);
476
477 r += SkGetPackedR32(c) * filter;
478 g += SkGetPackedG32(c) * filter;
479 b += SkGetPackedB32(c) * filter;
480 }
481 }
482
483 U8CPU r8, g8, b8;
484
485 r8 = (U8CPU) (r+0.5f);
486 g8 = (U8CPU) (g+0.5f);
487 b8 = (U8CPU) (b+0.5f);
488
489 return SkPackARGB32(255, r8, g8, b8);
490}
491
492SkBitmap slow_blur(const SkBitmap& src, float sigma) {
493 SkBitmap dst;
494
495 dst.allocN32Pixels(src.width(), src.height(), true);
496
497 int wh;
Ben Wagner7ecc5962016-11-02 17:07:33 -0400498 std::unique_ptr<float[]> kernel(create_2d_kernel(sigma, &wh));
robertphillips9c4909b2015-10-19 06:39:17 -0700499
500 for (int y = 0; y < src.height(); ++y) {
501 for (int x = 0; x < src.width(); ++x) {
502 *dst.getAddr32(x, y) = blur_pixel(src, x, y, kernel.get(), wh);
503 }
504 }
halcanary9d524f22016-03-29 09:03:52 -0700505
robertphillips9c4909b2015-10-19 06:39:17 -0700506 return dst;
507}
508
robertphillips276d3282016-08-04 09:03:19 -0700509// compute the intersection point between the diagonal and the ellipse in the
510// lower right corner
511static SkPoint intersection(SkScalar w, SkScalar h) {
512 SkASSERT(w > 0.0f || h > 0.0f);
513
514 return SkPoint::Make(w / SK_ScalarSqrt2, h / SK_ScalarSqrt2);
515}
516
517// Use the intersection of the corners' diagonals with their ellipses to shrink
518// the bounding rect
519SkRect compute_central_occluder(const SkRRect& rr) {
520 const SkRect r = rr.getBounds();
521
522 SkScalar newL = r.fLeft, newT = r.fTop, newR = r.fRight, newB = r.fBottom;
523
524 SkVector radii = rr.radii(SkRRect::kUpperLeft_Corner);
525 if (!radii.isZero()) {
526 SkPoint p = intersection(radii.fX, radii.fY);
527
528 newL = SkTMax(newL, r.fLeft + radii.fX - p.fX);
529 newT = SkTMax(newT, r.fTop + radii.fY - p.fY);
530 }
531
532 radii = rr.radii(SkRRect::kUpperRight_Corner);
533 if (!radii.isZero()) {
534 SkPoint p = intersection(radii.fX, radii.fY);
535
536 newR = SkTMin(newR, r.fRight + p.fX - radii.fX);
537 newT = SkTMax(newT, r.fTop + radii.fY - p.fY);
538 }
539
540 radii = rr.radii(SkRRect::kLowerRight_Corner);
541 if (!radii.isZero()) {
542 SkPoint p = intersection(radii.fX, radii.fY);
543
544 newR = SkTMin(newR, r.fRight + p.fX - radii.fX);
545 newB = SkTMin(newB, r.fBottom - radii.fY + p.fY);
546 }
547
548 radii = rr.radii(SkRRect::kLowerLeft_Corner);
549 if (!radii.isZero()) {
550 SkPoint p = intersection(radii.fX, radii.fY);
551
552 newL = SkTMax(newL, r.fLeft + radii.fX - p.fX);
553 newB = SkTMin(newB, r.fBottom - radii.fY + p.fY);
554 }
555
556 return SkRect::MakeLTRB(newL, newT, newR, newB);
557}
558
robertphillips401c1962016-08-04 12:35:46 -0700559// The widest inset rect
560SkRect compute_widest_occluder(const SkRRect& rr) {
561 const SkRect& r = rr.getBounds();
562
563 const SkVector& ul = rr.radii(SkRRect::kUpperLeft_Corner);
564 const SkVector& ur = rr.radii(SkRRect::kUpperRight_Corner);
565 const SkVector& lr = rr.radii(SkRRect::kLowerRight_Corner);
566 const SkVector& ll = rr.radii(SkRRect::kLowerLeft_Corner);
567
568 SkScalar maxT = SkTMax(ul.fY, ur.fY);
569 SkScalar maxB = SkTMax(ll.fY, lr.fY);
570
571 return SkRect::MakeLTRB(r.fLeft, r.fTop + maxT, r.fRight, r.fBottom - maxB);
572
573}
574
575// The tallest inset rect
576SkRect compute_tallest_occluder(const SkRRect& rr) {
577 const SkRect& r = rr.getBounds();
578
579 const SkVector& ul = rr.radii(SkRRect::kUpperLeft_Corner);
580 const SkVector& ur = rr.radii(SkRRect::kUpperRight_Corner);
581 const SkVector& lr = rr.radii(SkRRect::kLowerRight_Corner);
582 const SkVector& ll = rr.radii(SkRRect::kLowerLeft_Corner);
583
584 SkScalar maxL = SkTMax(ul.fX, ll.fX);
585 SkScalar maxR = SkTMax(ur.fX, lr.fX);
586
587 return SkRect::MakeLTRB(r.fLeft + maxL, r.fTop, r.fRight - maxR, r.fBottom);
588}
589
Matt Sarett4897fb82017-01-18 11:49:33 -0500590void copy_to_g8(SkBitmap* dst, const SkBitmap& src) {
591 SkASSERT(kBGRA_8888_SkColorType == src.colorType() ||
592 kRGBA_8888_SkColorType == src.colorType());
593
594 SkImageInfo grayInfo = src.info().makeColorType(kGray_8_SkColorType);
595 dst->allocPixels(grayInfo);
596 uint8_t* dst8 = (uint8_t*)dst->getPixels();
597 const uint32_t* src32 = (const uint32_t*)src.getPixels();
598
599 const int w = src.width();
600 const int h = src.height();
601 const bool isBGRA = (kBGRA_8888_SkColorType == src.colorType());
602 for (int y = 0; y < h; ++y) {
603 if (isBGRA) {
604 // BGRA
605 for (int x = 0; x < w; ++x) {
606 uint32_t s = src32[x];
607 dst8[x] = SkComputeLuminance((s >> 16) & 0xFF, (s >> 8) & 0xFF, s & 0xFF);
608 }
609 } else {
610 // RGBA
611 for (int x = 0; x < w; ++x) {
612 uint32_t s = src32[x];
613 dst8[x] = SkComputeLuminance(s & 0xFF, (s >> 8) & 0xFF, (s >> 16) & 0xFF);
614 }
615 }
616 src32 = (const uint32_t*)((const char*)src32 + src.rowBytes());
617 dst8 += dst->rowBytes();
618 }
619}
robertphillips401c1962016-08-04 12:35:46 -0700620
Brian Osman964dec32017-01-26 09:32:33 -0500621#if SK_SUPPORT_GPU
622sk_sp<SkColorFilter> MakeLinearToSRGBColorFilter() {
623 return SkSRGBColorFilter::Make(GrSRGBEffect::Mode::kLinearToSRGB);
624}
625
626sk_sp<SkColorFilter> MakeSRGBToLinearColorFilter() {
627 return SkSRGBColorFilter::Make(GrSRGBEffect::Mode::kSRGBToLinear);
628}
629#endif
630
tfarina20108912014-06-21 10:54:17 -0700631} // namespace sk_tool_utils