reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 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 "gm.h" |
| 9 | |
| 10 | #include "Resources.h" |
| 11 | #include "SampleCode.h" |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 12 | #include "SkAnimTimer.h" |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 13 | #include "SkCanvas.h" |
| 14 | #include "SkInterpolator.h" |
reed | 73f6cfc | 2015-11-09 08:36:05 -0800 | [diff] [blame] | 15 | #include "SkGradientShader.h" |
| 16 | #include "SkData.h" |
bungeman | d3ebb48 | 2015-08-05 13:57:49 -0700 | [diff] [blame] | 17 | #include "SkPath.h" |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 18 | #include "SkSurface.h" |
| 19 | #include "SkRandom.h" |
| 20 | #include "SkTime.h" |
| 21 | |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 22 | static sk_sp<SkSurface> make_surface(SkCanvas* canvas, const SkImageInfo& info) { |
| 23 | auto surface = canvas->makeSurface(info); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 24 | if (!surface) { |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 25 | surface = SkSurface::MakeRaster(info); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 26 | } |
| 27 | return surface; |
| 28 | } |
| 29 | |
reed | 5671c5b | 2016-03-09 14:47:34 -0800 | [diff] [blame] | 30 | static sk_sp<SkShader> make_shader(const SkRect& bounds) { |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 31 | sk_sp<SkImage> image(GetResourceAsImage("mandrill_128.png")); |
Mike Reed | 0acd795 | 2017-04-28 11:12:19 -0400 | [diff] [blame] | 32 | return image ? image->makeShader() : nullptr; |
reed | 73f6cfc | 2015-11-09 08:36:05 -0800 | [diff] [blame] | 33 | } |
| 34 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 35 | #define N 128 |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 36 | #define ANGLE_DELTA 3 |
| 37 | #define SCALE_DELTA (SK_Scalar1 / 32) |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 38 | |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 39 | static sk_sp<SkImage> make_image() { |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 40 | SkImageInfo info = SkImageInfo::MakeN32(N, N, kOpaque_SkAlphaType); |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 41 | auto surface(SkSurface::MakeRaster(info)); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 42 | SkCanvas* canvas = surface->getCanvas(); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 43 | canvas->drawColor(SK_ColorWHITE); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 44 | |
| 45 | SkPath path; |
| 46 | path.setFillType(SkPath::kEvenOdd_FillType); |
| 47 | |
| 48 | path.addRect(SkRect::MakeWH(N/2, N)); |
| 49 | path.addRect(SkRect::MakeWH(N, N/2)); |
| 50 | path.moveTo(0, 0); path.lineTo(N, 0); path.lineTo(0, N); path.close(); |
| 51 | |
reed | 73f6cfc | 2015-11-09 08:36:05 -0800 | [diff] [blame] | 52 | SkPaint paint; |
reed | 5671c5b | 2016-03-09 14:47:34 -0800 | [diff] [blame] | 53 | paint.setShader(make_shader(SkRect::MakeWH(N, N))); |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 54 | |
reed | 73f6cfc | 2015-11-09 08:36:05 -0800 | [diff] [blame] | 55 | canvas->drawPath(path, paint); |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 56 | return surface->makeImageSnapshot(); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 57 | } |
| 58 | |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 59 | static sk_sp<SkImage> zoom_up(SkSurface* origSurf, SkImage* orig) { |
reed | 73f6cfc | 2015-11-09 08:36:05 -0800 | [diff] [blame] | 60 | const SkScalar S = 16; // amount to scale up |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 61 | const int D = 2; // dimension scaling for the offscreen |
| 62 | // since we only view the center, don't need to produce the entire thing |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 63 | |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 64 | SkImageInfo info = SkImageInfo::MakeN32(orig->width() * D, orig->height() * D, |
| 65 | kOpaque_SkAlphaType); |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 66 | auto surface(origSurf->makeSurface(info)); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 67 | SkCanvas* canvas = surface->getCanvas(); |
| 68 | canvas->drawColor(SK_ColorWHITE); |
| 69 | canvas->scale(S, S); |
| 70 | canvas->translate(-SkScalarHalf(orig->width()) * (S - D) / S, |
| 71 | -SkScalarHalf(orig->height()) * (S - D) / S); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 72 | canvas->drawImage(orig, 0, 0, nullptr); |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 73 | |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 74 | if (S > 3) { |
| 75 | SkPaint paint; |
| 76 | paint.setColor(SK_ColorWHITE); |
| 77 | for (int i = 1; i < orig->height(); ++i) { |
| 78 | SkScalar y = SkIntToScalar(i); |
| 79 | canvas->drawLine(0, y, SkIntToScalar(orig->width()), y, paint); |
| 80 | } |
| 81 | for (int i = 1; i < orig->width(); ++i) { |
| 82 | SkScalar x = SkIntToScalar(i); |
| 83 | canvas->drawLine(x, 0, x, SkIntToScalar(orig->height()), paint); |
| 84 | } |
| 85 | } |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 86 | return surface->makeImageSnapshot(); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 87 | } |
| 88 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 89 | struct AnimValue { |
| 90 | SkScalar fValue; |
| 91 | SkScalar fMin; |
| 92 | SkScalar fMax; |
| 93 | SkScalar fMod; |
| 94 | |
| 95 | operator SkScalar() const { return fValue; } |
| 96 | |
| 97 | void set(SkScalar value, SkScalar min, SkScalar max) { |
| 98 | fValue = value; |
| 99 | fMin = min; |
| 100 | fMax = max; |
| 101 | fMod = 0; |
| 102 | } |
| 103 | |
| 104 | void setMod(SkScalar value, SkScalar mod) { |
| 105 | fValue = value; |
| 106 | fMin = 0; |
| 107 | fMax = 0; |
| 108 | fMod = mod; |
| 109 | } |
| 110 | |
| 111 | SkScalar inc(SkScalar delta) { |
| 112 | fValue += delta; |
| 113 | return this->fixUp(); |
| 114 | } |
| 115 | |
| 116 | SkScalar fixUp() { |
| 117 | if (fMod) { |
| 118 | fValue = SkScalarMod(fValue, fMod); |
| 119 | } else { |
| 120 | if (fValue > fMax) { |
| 121 | fValue = fMax; |
| 122 | } else if (fValue < fMin) { |
| 123 | fValue = fMin; |
| 124 | } |
| 125 | } |
| 126 | return fValue; |
| 127 | } |
| 128 | }; |
| 129 | |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 130 | static void draw_box_frame(SkCanvas* canvas, int width, int height) { |
| 131 | SkPaint p; |
| 132 | p.setStyle(SkPaint::kStroke_Style); |
| 133 | p.setColor(SK_ColorRED); |
| 134 | SkRect r = SkRect::MakeIWH(width, height); |
| 135 | r.inset(0.5f, 0.5f); |
| 136 | canvas->drawRect(r, p); |
| 137 | canvas->drawLine(r.left(), r.top(), r.right(), r.bottom(), p); |
| 138 | canvas->drawLine(r.left(), r.bottom(), r.right(), r.top(), p); |
| 139 | } |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 140 | |
| 141 | class FilterQualityView : public SampleView { |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 142 | sk_sp<SkImage> fImage; |
| 143 | AnimValue fScale, fAngle; |
| 144 | SkSize fCell; |
| 145 | SkInterpolator fTrans; |
| 146 | SkMSec fCurrTime; |
| 147 | bool fShowFatBits; |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 148 | |
| 149 | public: |
Brian Osman | 176c3b2 | 2017-07-12 15:52:56 -0400 | [diff] [blame] | 150 | FilterQualityView() : fTrans(2, 2), fShowFatBits(true) { |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 151 | fCell.set(256, 256); |
| 152 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 153 | fScale.set(1, SK_Scalar1 / 8, 1); |
| 154 | fAngle.setMod(0, 360); |
| 155 | |
| 156 | SkScalar values[2]; |
| 157 | fTrans.setMirror(true); |
| 158 | fTrans.setReset(true); |
| 159 | |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 160 | fCurrTime = 0; |
| 161 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 162 | fTrans.setRepeatCount(999); |
| 163 | values[0] = values[1] = 0; |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 164 | fTrans.setKeyFrame(0, fCurrTime, values); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 165 | values[0] = values[1] = 1; |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 166 | fTrans.setKeyFrame(1, fCurrTime + 2000, values); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | protected: |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 170 | bool onQuery(SkEvent* evt) override { |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 171 | if (SampleCode::TitleQ(*evt)) { |
| 172 | SampleCode::TitleR(evt, "FilterQuality"); |
| 173 | return true; |
| 174 | } |
| 175 | SkUnichar uni; |
| 176 | if (SampleCode::CharQ(*evt, &uni)) { |
| 177 | switch (uni) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 178 | case '1': fAngle.inc(-ANGLE_DELTA); this->inval(nullptr); return true; |
| 179 | case '2': fAngle.inc( ANGLE_DELTA); this->inval(nullptr); return true; |
| 180 | case '3': fScale.inc(-SCALE_DELTA); this->inval(nullptr); return true; |
| 181 | case '4': fScale.inc( SCALE_DELTA); this->inval(nullptr); return true; |
| 182 | case '5': fShowFatBits = !fShowFatBits; this->inval(nullptr); return true; |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 183 | default: break; |
| 184 | } |
| 185 | } |
| 186 | return this->INHERITED::onQuery(evt); |
| 187 | } |
| 188 | |
reed | 93a1215 | 2015-03-16 10:08:34 -0700 | [diff] [blame] | 189 | void drawTheImage(SkCanvas* canvas, const SkISize& size, SkFilterQuality filter, |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 190 | SkScalar dx, SkScalar dy) { |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 191 | SkPaint paint; |
| 192 | paint.setAntiAlias(true); |
reed | 93a1215 | 2015-03-16 10:08:34 -0700 | [diff] [blame] | 193 | paint.setFilterQuality(filter); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 194 | |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 195 | SkAutoCanvasRestore acr(canvas, true); |
| 196 | |
| 197 | canvas->translate(dx, dy); |
| 198 | |
| 199 | canvas->translate(SkScalarHalf(size.width()), SkScalarHalf(size.height())); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 200 | canvas->scale(fScale, fScale); |
| 201 | canvas->rotate(fAngle); |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 202 | canvas->drawImage(fImage.get(), -SkScalarHalf(fImage->width()), -SkScalarHalf(fImage->height()), |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 203 | &paint); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 204 | |
| 205 | if (false) { |
| 206 | acr.restore(); |
| 207 | draw_box_frame(canvas, size.width(), size.height()); |
| 208 | } |
| 209 | } |
| 210 | |
reed | 93a1215 | 2015-03-16 10:08:34 -0700 | [diff] [blame] | 211 | void drawHere(SkCanvas* canvas, SkFilterQuality filter, SkScalar dx, SkScalar dy) { |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 212 | SkCanvas* origCanvas = canvas; |
| 213 | SkAutoCanvasRestore acr(canvas, true); |
| 214 | |
| 215 | SkISize size = SkISize::Make(fImage->width(), fImage->height()); |
| 216 | |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 217 | sk_sp<SkSurface> surface; |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 218 | if (fShowFatBits) { |
| 219 | // scale up so we don't clip rotations |
| 220 | SkImageInfo info = SkImageInfo::MakeN32(fImage->width() * 2, fImage->height() * 2, |
| 221 | kOpaque_SkAlphaType); |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 222 | surface = make_surface(canvas, info); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 223 | canvas = surface->getCanvas(); |
| 224 | canvas->drawColor(SK_ColorWHITE); |
| 225 | size.set(info.width(), info.height()); |
| 226 | } else { |
| 227 | canvas->translate(SkScalarHalf(fCell.width() - fImage->width()), |
| 228 | SkScalarHalf(fCell.height() - fImage->height())); |
| 229 | } |
| 230 | this->drawTheImage(canvas, size, filter, dx, dy); |
| 231 | |
| 232 | if (surface) { |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 233 | sk_sp<SkImage> orig(surface->makeImageSnapshot()); |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 234 | sk_sp<SkImage> zoomed(zoom_up(surface.get(), orig.get())); |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 235 | origCanvas->drawImage(zoomed.get(), |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 236 | SkScalarHalf(fCell.width() - zoomed->width()), |
| 237 | SkScalarHalf(fCell.height() - zoomed->height())); |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | void drawBorders(SkCanvas* canvas) { |
| 242 | SkPaint p; |
| 243 | p.setStyle(SkPaint::kStroke_Style); |
| 244 | p.setColor(SK_ColorBLUE); |
| 245 | |
| 246 | SkRect r = SkRect::MakeWH(fCell.width() * 2, fCell.height() * 2); |
| 247 | r.inset(SK_ScalarHalf, SK_ScalarHalf); |
| 248 | canvas->drawRect(r, p); |
| 249 | canvas->drawLine(r.left(), r.centerY(), r.right(), r.centerY(), p); |
| 250 | canvas->drawLine(r.centerX(), r.top(), r.centerX(), r.bottom(), p); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 251 | } |
| 252 | |
Brian Osman | 176c3b2 | 2017-07-12 15:52:56 -0400 | [diff] [blame] | 253 | void onOnceBeforeDraw() override { |
| 254 | fImage = make_image(); |
| 255 | } |
| 256 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 257 | void onDrawContent(SkCanvas* canvas) override { |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 258 | fCell.set(this->height() / 2, this->height() / 2); |
| 259 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 260 | SkScalar trans[2]; |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 261 | fTrans.timeToValues(fCurrTime, trans); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 262 | |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 263 | for (int y = 0; y < 2; ++y) { |
| 264 | for (int x = 0; x < 2; ++x) { |
| 265 | int index = y * 2 + x; |
| 266 | SkAutoCanvasRestore acr(canvas, true); |
| 267 | canvas->translate(fCell.width() * x, fCell.height() * y); |
| 268 | SkRect r = SkRect::MakeWH(fCell.width(), fCell.height()); |
| 269 | r.inset(4, 4); |
| 270 | canvas->clipRect(r); |
reed | 93a1215 | 2015-03-16 10:08:34 -0700 | [diff] [blame] | 271 | this->drawHere(canvas, SkFilterQuality(index), trans[0], trans[1]); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 272 | } |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 273 | } |
| 274 | |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 275 | this->drawBorders(canvas); |
| 276 | |
| 277 | const SkScalar textX = fCell.width() * 2 + 30; |
| 278 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 279 | SkPaint paint; |
| 280 | paint.setAntiAlias(true); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 281 | paint.setTextSize(36); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 282 | SkString str; |
| 283 | str.appendScalar(fScale); |
Cary Clark | 2a475ea | 2017-04-28 15:35:12 -0400 | [diff] [blame] | 284 | canvas->drawString(str, textX, 100, paint); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 285 | str.reset(); str.appendScalar(fAngle); |
Cary Clark | 2a475ea | 2017-04-28 15:35:12 -0400 | [diff] [blame] | 286 | canvas->drawString(str, textX, 150, paint); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 287 | |
| 288 | str.reset(); str.appendScalar(trans[0]); |
Cary Clark | 2a475ea | 2017-04-28 15:35:12 -0400 | [diff] [blame] | 289 | canvas->drawString(str, textX, 200, paint); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 290 | str.reset(); str.appendScalar(trans[1]); |
Cary Clark | 2a475ea | 2017-04-28 15:35:12 -0400 | [diff] [blame] | 291 | canvas->drawString(str, textX, 250, paint); |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 292 | } |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 293 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 294 | bool onAnimate(const SkAnimTimer& timer) override { |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 295 | fCurrTime = timer.msec(); |
| 296 | return true; |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 297 | } |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 298 | |
| 299 | virtual bool handleKey(SkKey key) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 300 | this->inval(nullptr); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 301 | return true; |
| 302 | } |
| 303 | |
| 304 | private: |
| 305 | typedef SampleView INHERITED; |
| 306 | }; |
| 307 | |
| 308 | ////////////////////////////////////////////////////////////////////////////// |
| 309 | |
| 310 | static SkView* MyFactory() { return new FilterQualityView; } |
| 311 | static SkViewRegister reg(MyFactory); |