epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2011 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 | */ |
Mike Reed | ebfce6d | 2016-12-12 10:02:12 -0500 | [diff] [blame] | 7 | |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 8 | #include "gm/gm.h" |
| 9 | #include "include/core/SkCanvas.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 10 | #include "include/core/SkClipOp.h" |
| 11 | #include "include/core/SkColor.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 12 | #include "include/core/SkFont.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 13 | #include "include/core/SkFontTypes.h" |
| 14 | #include "include/core/SkPaint.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 15 | #include "include/core/SkPath.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 16 | #include "include/core/SkRect.h" |
| 17 | #include "include/core/SkScalar.h" |
| 18 | #include "include/core/SkSize.h" |
| 19 | #include "include/core/SkString.h" |
| 20 | #include "include/core/SkTypeface.h" |
| 21 | #include "include/core/SkTypes.h" |
| 22 | #include "src/core/SkClipOpPriv.h" |
Mike Reed | 121c2af | 2020-03-10 14:02:56 -0400 | [diff] [blame] | 23 | #include "tools/Resources.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 24 | #include "tools/ToolUtils.h" |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 25 | |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 26 | #include <string.h> |
| 27 | |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 28 | namespace skiagm { |
| 29 | |
mtklein | dbfd7ab | 2016-09-01 11:24:54 -0700 | [diff] [blame] | 30 | constexpr SkColor gPathColor = SK_ColorBLACK; |
| 31 | constexpr SkColor gClipAColor = SK_ColorBLUE; |
| 32 | constexpr SkColor gClipBColor = SK_ColorRED; |
reed@google.com | a8f60f2 | 2011-12-08 16:18:29 +0000 | [diff] [blame] | 33 | |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 34 | class ComplexClipGM : public GM { |
| 35 | public: |
bsalomon | 6ae83cf | 2014-12-17 14:38:49 -0800 | [diff] [blame] | 36 | ComplexClipGM(bool aaclip, bool saveLayer, bool invertDraw) |
robertphillips@google.com | 50a69a0 | 2012-07-12 13:48:46 +0000 | [diff] [blame] | 37 | : fDoAAClip(aaclip) |
bsalomon | 6ae83cf | 2014-12-17 14:38:49 -0800 | [diff] [blame] | 38 | , fDoSaveLayer(saveLayer) |
| 39 | , fInvertDraw(invertDraw) { |
caryclark | ceb9f3b | 2015-06-12 10:00:11 -0700 | [diff] [blame] | 40 | this->setBGColor(0xFFDEDFDE); |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 41 | } |
| 42 | |
| 43 | protected: |
Mike Reed | bc414ed | 2018-08-16 22:49:55 -0400 | [diff] [blame] | 44 | SkString onShortName() override { |
reed@google.com | a8f60f2 | 2011-12-08 16:18:29 +0000 | [diff] [blame] | 45 | SkString str; |
bsalomon | 6ae83cf | 2014-12-17 14:38:49 -0800 | [diff] [blame] | 46 | str.printf("complexclip_%s%s%s", |
robertphillips@google.com | 50a69a0 | 2012-07-12 13:48:46 +0000 | [diff] [blame] | 47 | fDoAAClip ? "aa" : "bw", |
bsalomon | 6ae83cf | 2014-12-17 14:38:49 -0800 | [diff] [blame] | 48 | fDoSaveLayer ? "_layer" : "", |
| 49 | fInvertDraw ? "_invert" : ""); |
reed@google.com | a8f60f2 | 2011-12-08 16:18:29 +0000 | [diff] [blame] | 50 | return str; |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 51 | } |
| 52 | |
Mike Reed | bc414ed | 2018-08-16 22:49:55 -0400 | [diff] [blame] | 53 | SkISize onISize() override { return SkISize::Make(970, 780); } |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 54 | |
Mike Reed | bc414ed | 2018-08-16 22:49:55 -0400 | [diff] [blame] | 55 | void onDraw(SkCanvas* canvas) override { |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 56 | SkPath path; |
Mike Reed | bc414ed | 2018-08-16 22:49:55 -0400 | [diff] [blame] | 57 | path.moveTo(0, 50) |
| 58 | .quadTo(0, 0, 50, 0) |
| 59 | .lineTo(175, 0) |
| 60 | .quadTo(200, 0, 200, 25) |
| 61 | .lineTo(200, 150) |
| 62 | .quadTo(200, 200, 150, 200) |
| 63 | .lineTo(0, 200) |
| 64 | .close() |
| 65 | .moveTo(50, 50) |
| 66 | .lineTo(150, 50) |
| 67 | .lineTo(150, 125) |
| 68 | .quadTo(150, 150, 125, 150) |
| 69 | .lineTo(50, 150) |
| 70 | .close(); |
bsalomon | 6ae83cf | 2014-12-17 14:38:49 -0800 | [diff] [blame] | 71 | if (fInvertDraw) { |
Mike Reed | 7d34dc7 | 2019-11-26 12:17:17 -0500 | [diff] [blame] | 72 | path.setFillType(SkPathFillType::kInverseEvenOdd); |
bsalomon | 6ae83cf | 2014-12-17 14:38:49 -0800 | [diff] [blame] | 73 | } else { |
Mike Reed | 7d34dc7 | 2019-11-26 12:17:17 -0500 | [diff] [blame] | 74 | path.setFillType(SkPathFillType::kEvenOdd); |
bsalomon | 6ae83cf | 2014-12-17 14:38:49 -0800 | [diff] [blame] | 75 | } |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 76 | SkPaint pathPaint; |
| 77 | pathPaint.setAntiAlias(true); |
reed@google.com | a8f60f2 | 2011-12-08 16:18:29 +0000 | [diff] [blame] | 78 | pathPaint.setColor(gPathColor); |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 79 | |
| 80 | SkPath clipA; |
Mike Reed | bc414ed | 2018-08-16 22:49:55 -0400 | [diff] [blame] | 81 | clipA.addPoly({{10, 20}, {165, 22}, {70, 105}, {165, 177}, {-5, 180}}, false).close(); |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 82 | |
| 83 | SkPath clipB; |
Mike Reed | bc414ed | 2018-08-16 22:49:55 -0400 | [diff] [blame] | 84 | clipB.addPoly({{40, 10}, {190, 15}, {195, 190}, {40, 185}, {155, 100}}, false).close(); |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 85 | |
Mike Klein | ea3f014 | 2019-03-20 11:12:10 -0500 | [diff] [blame] | 86 | SkFont font(ToolUtils::create_portable_typeface(), 20); |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 87 | |
mtklein | dbfd7ab | 2016-09-01 11:24:54 -0700 | [diff] [blame] | 88 | constexpr struct { |
Mike Reed | c1f7774 | 2016-12-09 09:00:50 -0500 | [diff] [blame] | 89 | SkClipOp fOp; |
reed | 73603f3 | 2016-09-20 08:42:38 -0700 | [diff] [blame] | 90 | const char* fName; |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 91 | } gOps[] = { //extra spaces in names for measureText |
Mike Reed | c1f7774 | 2016-12-09 09:00:50 -0500 | [diff] [blame] | 92 | {kIntersect_SkClipOp, "Isect "}, |
| 93 | {kDifference_SkClipOp, "Diff " }, |
| 94 | {kUnion_SkClipOp, "Union "}, |
| 95 | {kXOR_SkClipOp, "Xor " }, |
| 96 | {kReverseDifference_SkClipOp, "RDiff "} |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 97 | }; |
| 98 | |
Mike Reed | bc414ed | 2018-08-16 22:49:55 -0400 | [diff] [blame] | 99 | canvas->translate(20, 20); |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 100 | canvas->scale(3 * SK_Scalar1 / 4, 3 * SK_Scalar1 / 4); |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 101 | |
robertphillips@google.com | 54bb7ab | 2012-07-13 14:55:25 +0000 | [diff] [blame] | 102 | if (fDoSaveLayer) { |
| 103 | // We want the layer to appear symmetric relative to actual |
| 104 | // device boundaries so we need to "undo" the effect of the |
| 105 | // scale and translate |
| 106 | SkRect bounds = SkRect::MakeLTRB( |
commit-bot@chromium.org | 4b413c8 | 2013-11-25 19:44:07 +0000 | [diff] [blame] | 107 | 4.0f/3.0f * -20, |
| 108 | 4.0f/3.0f * -20, |
| 109 | 4.0f/3.0f * (this->getISize().fWidth - 20), |
| 110 | 4.0f/3.0f * (this->getISize().fHeight - 20)); |
robertphillips@google.com | 54bb7ab | 2012-07-13 14:55:25 +0000 | [diff] [blame] | 111 | |
Mike Reed | bc414ed | 2018-08-16 22:49:55 -0400 | [diff] [blame] | 112 | bounds.inset(100, 100); |
robertphillips@google.com | 50a69a0 | 2012-07-12 13:48:46 +0000 | [diff] [blame] | 113 | SkPaint boundPaint; |
| 114 | boundPaint.setColor(SK_ColorRED); |
| 115 | boundPaint.setStyle(SkPaint::kStroke_Style); |
| 116 | canvas->drawRect(bounds, boundPaint); |
Ben Wagner | 788a2dc | 2018-05-09 13:23:38 -0400 | [diff] [blame] | 117 | canvas->clipRect(bounds); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 118 | canvas->saveLayer(&bounds, nullptr); |
robertphillips@google.com | 50a69a0 | 2012-07-12 13:48:46 +0000 | [diff] [blame] | 119 | } |
| 120 | |
reed@google.com | a8f60f2 | 2011-12-08 16:18:29 +0000 | [diff] [blame] | 121 | for (int invBits = 0; invBits < 4; ++invBits) { |
| 122 | canvas->save(); |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 123 | for (size_t op = 0; op < SK_ARRAY_COUNT(gOps); ++op) { |
reed@google.com | a8f60f2 | 2011-12-08 16:18:29 +0000 | [diff] [blame] | 124 | this->drawHairlines(canvas, path, clipA, clipB); |
| 125 | |
| 126 | bool doInvA = SkToBool(invBits & 1); |
| 127 | bool doInvB = SkToBool(invBits & 2); |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 128 | canvas->save(); |
| 129 | // set clip |
Mike Reed | 7d34dc7 | 2019-11-26 12:17:17 -0500 | [diff] [blame] | 130 | clipA.setFillType(doInvA ? SkPathFillType::kInverseEvenOdd : |
| 131 | SkPathFillType::kEvenOdd); |
| 132 | clipB.setFillType(doInvB ? SkPathFillType::kInverseEvenOdd : |
| 133 | SkPathFillType::kEvenOdd); |
reed | 6699838 | 2016-09-21 11:15:07 -0700 | [diff] [blame] | 134 | canvas->clipPath(clipA, fDoAAClip); |
reed@google.com | a8f60f2 | 2011-12-08 16:18:29 +0000 | [diff] [blame] | 135 | canvas->clipPath(clipB, gOps[op].fOp, fDoAAClip); |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 136 | |
bsalomon | 6ae83cf | 2014-12-17 14:38:49 -0800 | [diff] [blame] | 137 | // In the inverse case we need to prevent the draw from covering the whole |
| 138 | // canvas. |
| 139 | if (fInvertDraw) { |
| 140 | SkRect rectClip = clipA.getBounds(); |
| 141 | rectClip.join(path.getBounds()); |
| 142 | rectClip.join(path.getBounds()); |
| 143 | rectClip.outset(5, 5); |
| 144 | canvas->clipRect(rectClip); |
| 145 | } |
| 146 | |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 147 | // draw path clipped |
| 148 | canvas->drawPath(path, pathPaint); |
| 149 | canvas->restore(); |
| 150 | |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 151 | |
Mike Reed | 2e6db18 | 2018-12-15 13:45:33 -0500 | [diff] [blame] | 152 | SkPaint paint; |
Mike Reed | bc414ed | 2018-08-16 22:49:55 -0400 | [diff] [blame] | 153 | SkScalar txtX = 45; |
reed@google.com | a8f60f2 | 2011-12-08 16:18:29 +0000 | [diff] [blame] | 154 | paint.setColor(gClipAColor); |
| 155 | const char* aTxt = doInvA ? "InvA " : "A "; |
Ben Wagner | 51e15a6 | 2019-05-07 15:38:46 -0400 | [diff] [blame] | 156 | canvas->drawSimpleText(aTxt, strlen(aTxt), SkTextEncoding::kUTF8, txtX, 220, font, paint); |
| 157 | txtX += font.measureText(aTxt, strlen(aTxt), SkTextEncoding::kUTF8); |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 158 | paint.setColor(SK_ColorBLACK); |
Ben Wagner | 51e15a6 | 2019-05-07 15:38:46 -0400 | [diff] [blame] | 159 | canvas->drawSimpleText(gOps[op].fName, strlen(gOps[op].fName), SkTextEncoding::kUTF8, txtX, 220, |
Mike Reed | 2e6db18 | 2018-12-15 13:45:33 -0500 | [diff] [blame] | 160 | font, paint); |
Ben Wagner | 51e15a6 | 2019-05-07 15:38:46 -0400 | [diff] [blame] | 161 | txtX += font.measureText(gOps[op].fName, strlen(gOps[op].fName), SkTextEncoding::kUTF8); |
reed@google.com | a8f60f2 | 2011-12-08 16:18:29 +0000 | [diff] [blame] | 162 | paint.setColor(gClipBColor); |
| 163 | const char* bTxt = doInvB ? "InvB " : "B "; |
Ben Wagner | 51e15a6 | 2019-05-07 15:38:46 -0400 | [diff] [blame] | 164 | canvas->drawSimpleText(bTxt, strlen(bTxt), SkTextEncoding::kUTF8, txtX, 220, font, paint); |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 165 | |
Mike Reed | bc414ed | 2018-08-16 22:49:55 -0400 | [diff] [blame] | 166 | canvas->translate(250,0); |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 167 | } |
reed@google.com | a8f60f2 | 2011-12-08 16:18:29 +0000 | [diff] [blame] | 168 | canvas->restore(); |
Mike Reed | bc414ed | 2018-08-16 22:49:55 -0400 | [diff] [blame] | 169 | canvas->translate(0, 250); |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 170 | } |
robertphillips@google.com | 50a69a0 | 2012-07-12 13:48:46 +0000 | [diff] [blame] | 171 | |
robertphillips@google.com | 54bb7ab | 2012-07-13 14:55:25 +0000 | [diff] [blame] | 172 | if (fDoSaveLayer) { |
robertphillips@google.com | 50a69a0 | 2012-07-12 13:48:46 +0000 | [diff] [blame] | 173 | canvas->restore(); |
| 174 | } |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 175 | } |
| 176 | private: |
reed@google.com | a8f60f2 | 2011-12-08 16:18:29 +0000 | [diff] [blame] | 177 | void drawHairlines(SkCanvas* canvas, const SkPath& path, |
| 178 | const SkPath& clipA, const SkPath& clipB) { |
| 179 | SkPaint paint; |
| 180 | paint.setAntiAlias(true); |
| 181 | paint.setStyle(SkPaint::kStroke_Style); |
| 182 | const SkAlpha fade = 0x33; |
| 183 | |
| 184 | // draw path in hairline |
| 185 | paint.setColor(gPathColor); paint.setAlpha(fade); |
| 186 | canvas->drawPath(path, paint); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 187 | |
reed@google.com | a8f60f2 | 2011-12-08 16:18:29 +0000 | [diff] [blame] | 188 | // draw clips in hair line |
| 189 | paint.setColor(gClipAColor); paint.setAlpha(fade); |
| 190 | canvas->drawPath(clipA, paint); |
| 191 | paint.setColor(gClipBColor); paint.setAlpha(fade); |
| 192 | canvas->drawPath(clipB, paint); |
| 193 | } |
| 194 | |
bsalomon | 6ae83cf | 2014-12-17 14:38:49 -0800 | [diff] [blame] | 195 | bool fDoAAClip; |
| 196 | bool fDoSaveLayer; |
| 197 | bool fInvertDraw; |
| 198 | |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 199 | typedef GM INHERITED; |
| 200 | }; |
| 201 | |
| 202 | ////////////////////////////////////////////////////////////////////////////// |
| 203 | |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 204 | DEF_GM(return new ComplexClipGM(false, false, false);) |
| 205 | DEF_GM(return new ComplexClipGM(false, false, true);) |
| 206 | DEF_GM(return new ComplexClipGM(false, true, false);) |
| 207 | DEF_GM(return new ComplexClipGM(false, true, true);) |
| 208 | DEF_GM(return new ComplexClipGM(true, false, false);) |
| 209 | DEF_GM(return new ComplexClipGM(true, false, true);) |
| 210 | DEF_GM(return new ComplexClipGM(true, true, false);) |
| 211 | DEF_GM(return new ComplexClipGM(true, true, true);) |
bsalomon@google.com | 807cec4 | 2011-03-10 19:20:15 +0000 | [diff] [blame] | 212 | } |
Mike Reed | 121c2af | 2020-03-10 14:02:56 -0400 | [diff] [blame] | 213 | |
| 214 | DEF_SIMPLE_GM(clip_shader, canvas, 840, 650) { |
| 215 | auto img = GetResourceAsImage("images/yellow_rose.png"); |
| 216 | auto sh = img->makeShader(); |
| 217 | |
| 218 | SkRect r = SkRect::MakeIWH(img->width(), img->height()); |
| 219 | SkPaint p; |
| 220 | |
| 221 | canvas->translate(10, 10); |
| 222 | canvas->drawImage(img, 0, 0, nullptr); |
| 223 | |
| 224 | canvas->save(); |
| 225 | canvas->translate(img->width() + 10, 0); |
| 226 | canvas->clipShader(sh, SkClipOp::kIntersect); |
| 227 | p.setColor(SK_ColorRED); |
| 228 | canvas->drawRect(r, p); |
| 229 | canvas->restore(); |
| 230 | |
| 231 | canvas->save(); |
| 232 | canvas->translate(0, img->height() + 10); |
| 233 | canvas->clipShader(sh, SkClipOp::kDifference); |
| 234 | p.setColor(SK_ColorGREEN); |
| 235 | canvas->drawRect(r, p); |
| 236 | canvas->restore(); |
| 237 | |
| 238 | canvas->save(); |
| 239 | canvas->translate(img->width() + 10, img->height() + 10); |
| 240 | canvas->clipShader(sh, SkClipOp::kIntersect); |
| 241 | canvas->save(); |
Mike Reed | 1f60733 | 2020-05-21 12:11:27 -0400 | [diff] [blame^] | 242 | SkMatrix lm = SkMatrix::Scale(1.0f/5, 1.0f/5); |
Mike Reed | 121c2af | 2020-03-10 14:02:56 -0400 | [diff] [blame] | 243 | canvas->clipShader(img->makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat, &lm)); |
| 244 | canvas->drawImage(img, 0, 0, nullptr); |
| 245 | |
| 246 | canvas->restore(); |
| 247 | canvas->restore(); |
| 248 | } |
Mike Reed | 84a9eb5 | 2020-03-12 13:55:44 -0400 | [diff] [blame] | 249 | |
| 250 | DEF_SIMPLE_GM(clip_shader_layer, canvas, 430, 320) { |
| 251 | auto img = GetResourceAsImage("images/yellow_rose.png"); |
| 252 | auto sh = img->makeShader(); |
| 253 | |
| 254 | SkRect r = SkRect::MakeIWH(img->width(), img->height()); |
| 255 | |
| 256 | canvas->translate(10, 10); |
| 257 | // now add the cool clip |
| 258 | canvas->clipRect(r); |
| 259 | canvas->clipShader(sh); |
| 260 | // now draw a layer with the same image, and watch it get restored w/ the clip |
| 261 | canvas->saveLayer(&r, nullptr); |
| 262 | canvas->drawColor(0xFFFF0000); |
| 263 | canvas->restore(); |
| 264 | } |