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 | */ |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame^] | 7 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 8 | #include "SampleCode.h" |
| 9 | #include "SkView.h" |
| 10 | #include "SkCanvas.h" |
| 11 | #include "SkBlurMaskFilter.h" |
| 12 | #include "SkCamera.h" |
| 13 | #include "SkColorFilter.h" |
| 14 | #include "SkColorPriv.h" |
| 15 | #include "SkDevice.h" |
| 16 | #include "SkGradientShader.h" |
| 17 | #include "SkImageDecoder.h" |
| 18 | #include "SkInterpolator.h" |
| 19 | #include "SkMaskFilter.h" |
| 20 | #include "SkPath.h" |
| 21 | #include "SkRegion.h" |
| 22 | #include "SkShader.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 23 | #include "SkTime.h" |
| 24 | #include "SkTypeface.h" |
| 25 | #include "SkUtils.h" |
| 26 | #include "SkKey.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 27 | #include "SkXfermode.h" |
| 28 | #include "SkDrawFilter.h" |
| 29 | |
commit-bot@chromium.org | 9c9005a | 2014-04-28 14:55:39 +0000 | [diff] [blame] | 30 | static void make_paint(SkPaint* paint, const SkMatrix& localMatrix) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 31 | SkColor colors[] = { 0, SK_ColorWHITE }; |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 32 | SkPoint pts[] = { { 0, 0 }, { 0, SK_Scalar1*20 } }; |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame^] | 33 | paint->setShader(SkGradientShader::MakeLinear(pts, colors, nullptr, 2, |
| 34 | SkShader::kClamp_TileMode, 0, &localMatrix)); |
reed@android.com | 0baf193 | 2009-06-24 12:41:42 +0000 | [diff] [blame] | 35 | paint->setXfermodeMode(SkXfermode::kDstIn_Mode); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 36 | } |
| 37 | |
| 38 | static void dump_layers(const char label[], SkCanvas* canvas) { |
| 39 | SkDebugf("Dump Layers(%s)\n", label); |
| 40 | |
| 41 | SkCanvas::LayerIter iter(canvas, true); |
| 42 | int index = 0; |
| 43 | while (!iter.done()) { |
commit-bot@chromium.org | c3bd8af | 2014-02-13 17:14:46 +0000 | [diff] [blame] | 44 | SkImageInfo info = iter.device()->imageInfo(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 45 | const SkIRect& clip = iter.clip().getBounds(); |
| 46 | SkDebugf("Layer[%d] bitmap [%d %d] X=%d Y=%d clip=[%d %d %d %d] alpha=%d\n", index++, |
commit-bot@chromium.org | c3bd8af | 2014-02-13 17:14:46 +0000 | [diff] [blame] | 47 | info.width(), info.height(), iter.x(), iter.y(), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 48 | clip.fLeft, clip.fTop, clip.fRight, clip.fBottom, |
| 49 | iter.paint().getAlpha()); |
| 50 | iter.next(); |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | // test drawing with strips of fading gradient above and below |
| 55 | static void test_fade(SkCanvas* canvas) { |
| 56 | SkAutoCanvasRestore ar(canvas, true); |
| 57 | |
| 58 | SkRect r; |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 59 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 60 | SkPaint p; |
| 61 | p.setAlpha(0x88); |
| 62 | |
commit-bot@chromium.org | e61a86c | 2013-11-18 16:03:59 +0000 | [diff] [blame] | 63 | SkAutoCanvasRestore ar2(canvas, false); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 64 | |
| 65 | // create the layers |
| 66 | |
| 67 | r.set(0, 0, SkIntToScalar(100), SkIntToScalar(100)); |
| 68 | canvas->clipRect(r); |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 69 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 70 | r.fBottom = SkIntToScalar(20); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 71 | canvas->saveLayer(&r, nullptr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 72 | |
| 73 | r.fTop = SkIntToScalar(80); |
| 74 | r.fBottom = SkIntToScalar(100); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 75 | canvas->saveLayer(&r, nullptr); |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 76 | |
| 77 | // now draw the "content" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 78 | |
| 79 | if (true) { |
| 80 | r.set(0, 0, SkIntToScalar(100), SkIntToScalar(100)); |
| 81 | |
| 82 | canvas->saveLayerAlpha(&r, 0x80); |
| 83 | |
| 84 | SkPaint p; |
| 85 | p.setColor(SK_ColorRED); |
| 86 | p.setAntiAlias(true); |
| 87 | canvas->drawOval(r, p); |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 88 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 89 | dump_layers("inside layer alpha", canvas); |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 90 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 91 | canvas->restore(); |
| 92 | } else { |
| 93 | r.set(0, 0, SkIntToScalar(100), SkIntToScalar(100)); |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 94 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 95 | SkPaint p; |
| 96 | p.setColor(SK_ColorRED); |
| 97 | p.setAntiAlias(true); |
| 98 | canvas->drawOval(r, p); |
| 99 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 100 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 101 | // return; |
| 102 | |
| 103 | dump_layers("outside layer alpha", canvas); |
| 104 | |
| 105 | // now apply an effect |
commit-bot@chromium.org | 9c9005a | 2014-04-28 14:55:39 +0000 | [diff] [blame] | 106 | SkMatrix m; |
| 107 | m.setScale(SK_Scalar1, -SK_Scalar1); |
| 108 | m.postTranslate(0, SkIntToScalar(100)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 109 | |
| 110 | SkPaint paint; |
commit-bot@chromium.org | 9c9005a | 2014-04-28 14:55:39 +0000 | [diff] [blame] | 111 | make_paint(&paint, m); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 112 | r.set(0, 0, SkIntToScalar(100), SkIntToScalar(20)); |
| 113 | // SkDebugf("--------- draw top grad\n"); |
| 114 | canvas->drawRect(r, paint); |
| 115 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 116 | r.fTop = SkIntToScalar(80); |
| 117 | r.fBottom = SkIntToScalar(100); |
| 118 | // SkDebugf("--------- draw bot grad\n"); |
| 119 | canvas->drawRect(r, paint); |
| 120 | } |
| 121 | |
| 122 | class RedFilter : public SkDrawFilter { |
| 123 | public: |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 124 | bool filter(SkPaint* p, SkDrawFilter::Type) override { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 125 | fColor = p->getColor(); |
| 126 | if (fColor == SK_ColorRED) { |
| 127 | p->setColor(SK_ColorGREEN); |
| 128 | } |
reed@google.com | 971aca7 | 2012-11-26 20:26:54 +0000 | [diff] [blame] | 129 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 130 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 131 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 132 | private: |
| 133 | SkColor fColor; |
| 134 | }; |
| 135 | |
| 136 | class LayersView : public SkView { |
| 137 | public: |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 138 | LayersView() {} |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 139 | |
| 140 | protected: |
| 141 | // overrides from SkEventSink |
mtklein | f059900 | 2015-07-13 06:18:39 -0700 | [diff] [blame] | 142 | bool onQuery(SkEvent* evt) override { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 143 | if (SampleCode::TitleQ(*evt)) { |
| 144 | SampleCode::TitleR(evt, "Layers"); |
| 145 | return true; |
| 146 | } |
| 147 | return this->INHERITED::onQuery(evt); |
| 148 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 149 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 150 | void drawBG(SkCanvas* canvas) { |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 151 | canvas->drawColor(SK_ColorGRAY); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 152 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 153 | |
mtklein | f059900 | 2015-07-13 06:18:39 -0700 | [diff] [blame] | 154 | void onDraw(SkCanvas* canvas) override { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 155 | this->drawBG(canvas); |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 156 | |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 157 | if (true) { |
| 158 | SkRect r; |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 159 | r.set(SkIntToScalar(0), SkIntToScalar(0), |
| 160 | SkIntToScalar(220), SkIntToScalar(120)); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 161 | SkPaint p; |
| 162 | canvas->saveLayer(&r, &p); |
| 163 | canvas->drawColor(0xFFFF0000); |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 164 | p.setAlpha(0); // or 0 |
reed@android.com | 0baf193 | 2009-06-24 12:41:42 +0000 | [diff] [blame] | 165 | p.setXfermodeMode(SkXfermode::kSrc_Mode); |
reed@android.com | 149e2f6 | 2009-05-22 14:39:03 +0000 | [diff] [blame] | 166 | canvas->drawOval(r, p); |
| 167 | canvas->restore(); |
| 168 | return; |
| 169 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 170 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 171 | if (false) { |
| 172 | SkRect r; |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 173 | r.set(SkIntToScalar(0), SkIntToScalar(0), |
| 174 | SkIntToScalar(220), SkIntToScalar(120)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 175 | SkPaint p; |
| 176 | p.setAlpha(0x88); |
| 177 | p.setAntiAlias(true); |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 178 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 179 | if (true) { |
| 180 | canvas->saveLayer(&r, &p); |
| 181 | p.setColor(0xFFFF0000); |
| 182 | canvas->drawOval(r, p); |
| 183 | canvas->restore(); |
| 184 | } |
| 185 | |
| 186 | p.setColor(0xFF0000FF); |
| 187 | r.offset(SkIntToScalar(20), SkIntToScalar(50)); |
| 188 | canvas->drawOval(r, p); |
| 189 | } |
| 190 | |
| 191 | if (false) { |
| 192 | SkPaint p; |
| 193 | p.setAlpha(0x88); |
| 194 | p.setAntiAlias(true); |
| 195 | |
| 196 | canvas->translate(SkIntToScalar(300), 0); |
| 197 | |
| 198 | SkRect r; |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 199 | r.set(SkIntToScalar(0), SkIntToScalar(0), |
| 200 | SkIntToScalar(220), SkIntToScalar(60)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 201 | |
commit-bot@chromium.org | 091a594 | 2014-04-18 14:19:31 +0000 | [diff] [blame] | 202 | canvas->saveLayer(&r, &p); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 203 | |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 204 | r.set(SkIntToScalar(0), SkIntToScalar(0), |
| 205 | SkIntToScalar(220), SkIntToScalar(120)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 206 | p.setColor(SK_ColorBLUE); |
| 207 | canvas->drawOval(r, p); |
| 208 | canvas->restore(); |
| 209 | return; |
| 210 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 211 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 212 | test_fade(canvas); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 213 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 214 | |
mtklein | f059900 | 2015-07-13 06:18:39 -0700 | [diff] [blame] | 215 | SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned modi) override { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 216 | this->inval(nullptr); |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 217 | |
reed@google.com | 4d5c26d | 2013-01-08 16:17:50 +0000 | [diff] [blame] | 218 | return this->INHERITED::onFindClickHandler(x, y, modi); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 219 | } |
rmistry@google.com | ae933ce | 2012-08-23 18:19:56 +0000 | [diff] [blame] | 220 | |
mtklein | f059900 | 2015-07-13 06:18:39 -0700 | [diff] [blame] | 221 | bool onClick(Click* click) override { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 222 | return this->INHERITED::onClick(click); |
| 223 | } |
| 224 | |
sugoi@google.com | 93c7ee3 | 2013-03-12 14:36:57 +0000 | [diff] [blame] | 225 | virtual bool handleKey(SkKey) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 226 | this->inval(nullptr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 227 | return true; |
| 228 | } |
| 229 | |
| 230 | private: |
| 231 | typedef SkView INHERITED; |
| 232 | }; |
reed | bfd5f17 | 2016-01-07 11:28:08 -0800 | [diff] [blame] | 233 | DEF_SAMPLE( return new LayersView; ) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 234 | |
| 235 | ////////////////////////////////////////////////////////////////////////////// |
| 236 | |
reed | bfd5f17 | 2016-01-07 11:28:08 -0800 | [diff] [blame] | 237 | #include "SkBlurImageFilter.h" |
| 238 | #include "SkMatrixConvolutionImageFilter.h" |
| 239 | #include "SkMorphologyImageFilter.h" |
| 240 | |
| 241 | #include "Resources.h" |
| 242 | #include "SkAnimTimer.h" |
| 243 | |
| 244 | class BackdropView : public SampleView { |
| 245 | SkPoint fCenter; |
| 246 | SkScalar fAngle; |
| 247 | SkAutoTUnref<SkImage> fImage; |
| 248 | SkAutoTUnref<SkImageFilter> fFilter; |
| 249 | public: |
| 250 | BackdropView() { |
| 251 | fCenter.set(200, 150); |
| 252 | fAngle = 0; |
| 253 | fImage.reset(GetResourceAsImage("mandrill_512.png")); |
| 254 | fFilter.reset(SkDilateImageFilter::Create(8, 8)); |
| 255 | } |
| 256 | |
| 257 | protected: |
| 258 | // overrides from SkEventSink |
| 259 | bool onQuery(SkEvent* evt) override { |
| 260 | if (SampleCode::TitleQ(*evt)) { |
| 261 | SampleCode::TitleR(evt, "Backdrop"); |
| 262 | return true; |
| 263 | } |
| 264 | return this->INHERITED::onQuery(evt); |
| 265 | } |
| 266 | |
| 267 | void onDrawContent(SkCanvas* canvas) override { |
| 268 | canvas->drawImage(fImage, 0, 0, nullptr); |
| 269 | |
| 270 | const SkScalar w = 250; |
| 271 | const SkScalar h = 150; |
| 272 | SkPath path; |
| 273 | path.addOval(SkRect::MakeXYWH(-w/2, -h/2, w, h)); |
| 274 | SkMatrix m; |
| 275 | m.setRotate(fAngle); |
| 276 | m.postTranslate(fCenter.x(), fCenter.y()); |
| 277 | path.transform(m); |
| 278 | |
| 279 | canvas->clipPath(path, SkRegion::kIntersect_Op, true); |
| 280 | const SkRect bounds = path.getBounds(); |
| 281 | |
| 282 | SkPaint paint; |
| 283 | paint.setAlpha(0xCC); |
| 284 | canvas->saveLayer({ &bounds, &paint, fFilter, 0 }); |
| 285 | |
| 286 | canvas->restore(); |
| 287 | } |
| 288 | |
| 289 | bool onAnimate(const SkAnimTimer& timer) override { |
| 290 | fAngle = SkDoubleToScalar(fmod(timer.secs() * 360 / 5, 360)); |
| 291 | return true; |
| 292 | } |
| 293 | |
| 294 | SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned modi) override { |
| 295 | this->inval(nullptr); |
| 296 | return new Click(this); |
| 297 | } |
| 298 | |
| 299 | bool onClick(Click* click) override { |
| 300 | this->inval(nullptr); |
| 301 | fCenter = click->fCurr; |
| 302 | return this->INHERITED::onClick(click); |
| 303 | } |
| 304 | |
| 305 | private: |
| 306 | typedef SampleView INHERITED; |
| 307 | }; |
| 308 | DEF_SAMPLE( return new BackdropView; ) |
| 309 | |