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")); |
| 32 | if (!image) { |
bungeman | fbd87d6 | 2015-11-10 13:29:43 -0800 | [diff] [blame] | 33 | return nullptr; |
| 34 | } |
reed | 5671c5b | 2016-03-09 14:47:34 -0800 | [diff] [blame] | 35 | return image->makeShader(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode); |
reed | 73f6cfc | 2015-11-09 08:36:05 -0800 | [diff] [blame] | 36 | } |
| 37 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 38 | #define N 128 |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 39 | #define ANGLE_DELTA 3 |
| 40 | #define SCALE_DELTA (SK_Scalar1 / 32) |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 41 | |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 42 | static sk_sp<SkImage> make_image() { |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 43 | SkImageInfo info = SkImageInfo::MakeN32(N, N, kOpaque_SkAlphaType); |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 44 | auto surface(SkSurface::MakeRaster(info)); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 45 | SkCanvas* canvas = surface->getCanvas(); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 46 | canvas->drawColor(SK_ColorWHITE); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 47 | |
| 48 | SkPath path; |
| 49 | path.setFillType(SkPath::kEvenOdd_FillType); |
| 50 | |
| 51 | path.addRect(SkRect::MakeWH(N/2, N)); |
| 52 | path.addRect(SkRect::MakeWH(N, N/2)); |
| 53 | path.moveTo(0, 0); path.lineTo(N, 0); path.lineTo(0, N); path.close(); |
| 54 | |
reed | 73f6cfc | 2015-11-09 08:36:05 -0800 | [diff] [blame] | 55 | SkPaint paint; |
reed | 5671c5b | 2016-03-09 14:47:34 -0800 | [diff] [blame] | 56 | paint.setShader(make_shader(SkRect::MakeWH(N, N))); |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 57 | |
reed | 73f6cfc | 2015-11-09 08:36:05 -0800 | [diff] [blame] | 58 | canvas->drawPath(path, paint); |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 59 | return surface->makeImageSnapshot(); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 60 | } |
| 61 | |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 62 | static sk_sp<SkImage> zoom_up(SkSurface* origSurf, SkImage* orig) { |
reed | 73f6cfc | 2015-11-09 08:36:05 -0800 | [diff] [blame] | 63 | const SkScalar S = 16; // amount to scale up |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 64 | const int D = 2; // dimension scaling for the offscreen |
| 65 | // 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] | 66 | |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 67 | SkImageInfo info = SkImageInfo::MakeN32(orig->width() * D, orig->height() * D, |
| 68 | kOpaque_SkAlphaType); |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 69 | auto surface(origSurf->makeSurface(info)); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 70 | SkCanvas* canvas = surface->getCanvas(); |
| 71 | canvas->drawColor(SK_ColorWHITE); |
| 72 | canvas->scale(S, S); |
| 73 | canvas->translate(-SkScalarHalf(orig->width()) * (S - D) / S, |
| 74 | -SkScalarHalf(orig->height()) * (S - D) / S); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 75 | canvas->drawImage(orig, 0, 0, nullptr); |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 76 | |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 77 | if (S > 3) { |
| 78 | SkPaint paint; |
| 79 | paint.setColor(SK_ColorWHITE); |
| 80 | for (int i = 1; i < orig->height(); ++i) { |
| 81 | SkScalar y = SkIntToScalar(i); |
| 82 | canvas->drawLine(0, y, SkIntToScalar(orig->width()), y, paint); |
| 83 | } |
| 84 | for (int i = 1; i < orig->width(); ++i) { |
| 85 | SkScalar x = SkIntToScalar(i); |
| 86 | canvas->drawLine(x, 0, x, SkIntToScalar(orig->height()), paint); |
| 87 | } |
| 88 | } |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 89 | return surface->makeImageSnapshot(); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 90 | } |
| 91 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 92 | struct AnimValue { |
| 93 | SkScalar fValue; |
| 94 | SkScalar fMin; |
| 95 | SkScalar fMax; |
| 96 | SkScalar fMod; |
| 97 | |
| 98 | operator SkScalar() const { return fValue; } |
| 99 | |
| 100 | void set(SkScalar value, SkScalar min, SkScalar max) { |
| 101 | fValue = value; |
| 102 | fMin = min; |
| 103 | fMax = max; |
| 104 | fMod = 0; |
| 105 | } |
| 106 | |
| 107 | void setMod(SkScalar value, SkScalar mod) { |
| 108 | fValue = value; |
| 109 | fMin = 0; |
| 110 | fMax = 0; |
| 111 | fMod = mod; |
| 112 | } |
| 113 | |
| 114 | SkScalar inc(SkScalar delta) { |
| 115 | fValue += delta; |
| 116 | return this->fixUp(); |
| 117 | } |
| 118 | |
| 119 | SkScalar fixUp() { |
| 120 | if (fMod) { |
| 121 | fValue = SkScalarMod(fValue, fMod); |
| 122 | } else { |
| 123 | if (fValue > fMax) { |
| 124 | fValue = fMax; |
| 125 | } else if (fValue < fMin) { |
| 126 | fValue = fMin; |
| 127 | } |
| 128 | } |
| 129 | return fValue; |
| 130 | } |
| 131 | }; |
| 132 | |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 133 | static void draw_box_frame(SkCanvas* canvas, int width, int height) { |
| 134 | SkPaint p; |
| 135 | p.setStyle(SkPaint::kStroke_Style); |
| 136 | p.setColor(SK_ColorRED); |
| 137 | SkRect r = SkRect::MakeIWH(width, height); |
| 138 | r.inset(0.5f, 0.5f); |
| 139 | canvas->drawRect(r, p); |
| 140 | canvas->drawLine(r.left(), r.top(), r.right(), r.bottom(), p); |
| 141 | canvas->drawLine(r.left(), r.bottom(), r.right(), r.top(), p); |
| 142 | } |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 143 | |
| 144 | class FilterQualityView : public SampleView { |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 145 | sk_sp<SkImage> fImage; |
| 146 | AnimValue fScale, fAngle; |
| 147 | SkSize fCell; |
| 148 | SkInterpolator fTrans; |
| 149 | SkMSec fCurrTime; |
| 150 | bool fShowFatBits; |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 151 | |
| 152 | public: |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 153 | FilterQualityView() : fImage(make_image()), fTrans(2, 2), fShowFatBits(true) { |
| 154 | fCell.set(256, 256); |
| 155 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 156 | fScale.set(1, SK_Scalar1 / 8, 1); |
| 157 | fAngle.setMod(0, 360); |
| 158 | |
| 159 | SkScalar values[2]; |
| 160 | fTrans.setMirror(true); |
| 161 | fTrans.setReset(true); |
| 162 | |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 163 | fCurrTime = 0; |
| 164 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 165 | fTrans.setRepeatCount(999); |
| 166 | values[0] = values[1] = 0; |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 167 | fTrans.setKeyFrame(0, fCurrTime, values); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 168 | values[0] = values[1] = 1; |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 169 | fTrans.setKeyFrame(1, fCurrTime + 2000, values); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 170 | } |
| 171 | |
| 172 | protected: |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 173 | bool onQuery(SkEvent* evt) override { |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 174 | if (SampleCode::TitleQ(*evt)) { |
| 175 | SampleCode::TitleR(evt, "FilterQuality"); |
| 176 | return true; |
| 177 | } |
| 178 | SkUnichar uni; |
| 179 | if (SampleCode::CharQ(*evt, &uni)) { |
| 180 | switch (uni) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 181 | case '1': fAngle.inc(-ANGLE_DELTA); this->inval(nullptr); return true; |
| 182 | case '2': fAngle.inc( ANGLE_DELTA); this->inval(nullptr); return true; |
| 183 | case '3': fScale.inc(-SCALE_DELTA); this->inval(nullptr); return true; |
| 184 | case '4': fScale.inc( SCALE_DELTA); this->inval(nullptr); return true; |
| 185 | case '5': fShowFatBits = !fShowFatBits; this->inval(nullptr); return true; |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 186 | default: break; |
| 187 | } |
| 188 | } |
| 189 | return this->INHERITED::onQuery(evt); |
| 190 | } |
| 191 | |
reed | 93a1215 | 2015-03-16 10:08:34 -0700 | [diff] [blame] | 192 | void drawTheImage(SkCanvas* canvas, const SkISize& size, SkFilterQuality filter, |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 193 | SkScalar dx, SkScalar dy) { |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 194 | SkPaint paint; |
| 195 | paint.setAntiAlias(true); |
reed | 93a1215 | 2015-03-16 10:08:34 -0700 | [diff] [blame] | 196 | paint.setFilterQuality(filter); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 197 | |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 198 | SkAutoCanvasRestore acr(canvas, true); |
| 199 | |
| 200 | canvas->translate(dx, dy); |
| 201 | |
| 202 | canvas->translate(SkScalarHalf(size.width()), SkScalarHalf(size.height())); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 203 | canvas->scale(fScale, fScale); |
| 204 | canvas->rotate(fAngle); |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 205 | canvas->drawImage(fImage.get(), -SkScalarHalf(fImage->width()), -SkScalarHalf(fImage->height()), |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 206 | &paint); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 207 | |
| 208 | if (false) { |
| 209 | acr.restore(); |
| 210 | draw_box_frame(canvas, size.width(), size.height()); |
| 211 | } |
| 212 | } |
| 213 | |
reed | 93a1215 | 2015-03-16 10:08:34 -0700 | [diff] [blame] | 214 | void drawHere(SkCanvas* canvas, SkFilterQuality filter, SkScalar dx, SkScalar dy) { |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 215 | SkCanvas* origCanvas = canvas; |
| 216 | SkAutoCanvasRestore acr(canvas, true); |
| 217 | |
| 218 | SkISize size = SkISize::Make(fImage->width(), fImage->height()); |
| 219 | |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 220 | sk_sp<SkSurface> surface; |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 221 | if (fShowFatBits) { |
| 222 | // scale up so we don't clip rotations |
| 223 | SkImageInfo info = SkImageInfo::MakeN32(fImage->width() * 2, fImage->height() * 2, |
| 224 | kOpaque_SkAlphaType); |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 225 | surface = make_surface(canvas, info); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 226 | canvas = surface->getCanvas(); |
| 227 | canvas->drawColor(SK_ColorWHITE); |
| 228 | size.set(info.width(), info.height()); |
| 229 | } else { |
| 230 | canvas->translate(SkScalarHalf(fCell.width() - fImage->width()), |
| 231 | SkScalarHalf(fCell.height() - fImage->height())); |
| 232 | } |
| 233 | this->drawTheImage(canvas, size, filter, dx, dy); |
| 234 | |
| 235 | if (surface) { |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 236 | sk_sp<SkImage> orig(surface->makeImageSnapshot()); |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 237 | sk_sp<SkImage> zoomed(zoom_up(surface.get(), orig.get())); |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 238 | origCanvas->drawImage(zoomed.get(), |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 239 | SkScalarHalf(fCell.width() - zoomed->width()), |
| 240 | SkScalarHalf(fCell.height() - zoomed->height())); |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | void drawBorders(SkCanvas* canvas) { |
| 245 | SkPaint p; |
| 246 | p.setStyle(SkPaint::kStroke_Style); |
| 247 | p.setColor(SK_ColorBLUE); |
| 248 | |
| 249 | SkRect r = SkRect::MakeWH(fCell.width() * 2, fCell.height() * 2); |
| 250 | r.inset(SK_ScalarHalf, SK_ScalarHalf); |
| 251 | canvas->drawRect(r, p); |
| 252 | canvas->drawLine(r.left(), r.centerY(), r.right(), r.centerY(), p); |
| 253 | canvas->drawLine(r.centerX(), r.top(), r.centerX(), r.bottom(), p); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 254 | } |
| 255 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 256 | void onDrawContent(SkCanvas* canvas) override { |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 257 | fCell.set(this->height() / 2, this->height() / 2); |
| 258 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 259 | SkScalar trans[2]; |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 260 | fTrans.timeToValues(fCurrTime, trans); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 261 | |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 262 | for (int y = 0; y < 2; ++y) { |
| 263 | for (int x = 0; x < 2; ++x) { |
| 264 | int index = y * 2 + x; |
| 265 | SkAutoCanvasRestore acr(canvas, true); |
| 266 | canvas->translate(fCell.width() * x, fCell.height() * y); |
| 267 | SkRect r = SkRect::MakeWH(fCell.width(), fCell.height()); |
| 268 | r.inset(4, 4); |
| 269 | canvas->clipRect(r); |
reed | 93a1215 | 2015-03-16 10:08:34 -0700 | [diff] [blame] | 270 | this->drawHere(canvas, SkFilterQuality(index), trans[0], trans[1]); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 271 | } |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 272 | } |
| 273 | |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 274 | this->drawBorders(canvas); |
| 275 | |
| 276 | const SkScalar textX = fCell.width() * 2 + 30; |
| 277 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 278 | SkPaint paint; |
| 279 | paint.setAntiAlias(true); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 280 | paint.setTextSize(36); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 281 | SkString str; |
| 282 | str.appendScalar(fScale); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 283 | canvas->drawText(str.c_str(), str.size(), textX, 100, paint); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 284 | str.reset(); str.appendScalar(fAngle); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 285 | canvas->drawText(str.c_str(), str.size(), textX, 150, paint); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 286 | |
| 287 | str.reset(); str.appendScalar(trans[0]); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 288 | canvas->drawText(str.c_str(), str.size(), textX, 200, paint); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 289 | str.reset(); str.appendScalar(trans[1]); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 290 | canvas->drawText(str.c_str(), str.size(), textX, 250, paint); |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 291 | } |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 292 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 293 | bool onAnimate(const SkAnimTimer& timer) override { |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 294 | fCurrTime = timer.msec(); |
| 295 | return true; |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 296 | } |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 297 | |
| 298 | virtual bool handleKey(SkKey key) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 299 | this->inval(nullptr); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 300 | return true; |
| 301 | } |
| 302 | |
| 303 | private: |
| 304 | typedef SampleView INHERITED; |
| 305 | }; |
| 306 | |
| 307 | ////////////////////////////////////////////////////////////////////////////// |
| 308 | |
| 309 | static SkView* MyFactory() { return new FilterQualityView; } |
| 310 | static SkViewRegister reg(MyFactory); |