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 | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 22 | static SkSurface* make_surface(SkCanvas* canvas, const SkImageInfo& info) { |
| 23 | SkSurface* surface = canvas->newSurface(info); |
| 24 | if (!surface) { |
| 25 | surface = SkSurface::NewRaster(info); |
| 26 | } |
| 27 | return surface; |
| 28 | } |
| 29 | |
reed | 73f6cfc | 2015-11-09 08:36:05 -0800 | [diff] [blame] | 30 | static SkShader* make_shader(const SkRect& bounds) { |
| 31 | #if 0 |
| 32 | const SkPoint pts[] = { |
| 33 | { bounds.left(), bounds.top() }, |
| 34 | { bounds.right(), bounds.bottom() }, |
| 35 | }; |
| 36 | const SkColor colors[] = { |
| 37 | SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorBLACK, |
| 38 | SK_ColorCYAN, SK_ColorMAGENTA, SK_ColorYELLOW, |
| 39 | }; |
| 40 | return SkGradientShader::CreateLinear(pts, |
| 41 | colors, nullptr, SK_ARRAY_COUNT(colors), |
| 42 | SkShader::kClamp_TileMode); |
| 43 | #else |
bungeman | fbd87d6 | 2015-11-10 13:29:43 -0800 | [diff] [blame] | 44 | SkAutoTUnref<SkImage> image(GetResourceAsImage("mandrill_128.png")); |
| 45 | if (nullptr == image) { |
| 46 | return nullptr; |
| 47 | } |
reed | 73f6cfc | 2015-11-09 08:36:05 -0800 | [diff] [blame] | 48 | return image->newShader(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode); |
| 49 | #endif |
| 50 | } |
| 51 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 52 | #define N 128 |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 53 | #define ANGLE_DELTA 3 |
| 54 | #define SCALE_DELTA (SK_Scalar1 / 32) |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 55 | |
| 56 | static SkImage* make_image() { |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 57 | SkImageInfo info = SkImageInfo::MakeN32(N, N, kOpaque_SkAlphaType); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 58 | SkAutoTUnref<SkSurface> surface(SkSurface::NewRaster(info)); |
| 59 | SkCanvas* canvas = surface->getCanvas(); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 60 | canvas->drawColor(SK_ColorWHITE); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 61 | |
| 62 | SkPath path; |
| 63 | path.setFillType(SkPath::kEvenOdd_FillType); |
| 64 | |
| 65 | path.addRect(SkRect::MakeWH(N/2, N)); |
| 66 | path.addRect(SkRect::MakeWH(N, N/2)); |
| 67 | path.moveTo(0, 0); path.lineTo(N, 0); path.lineTo(0, N); path.close(); |
| 68 | |
reed | 73f6cfc | 2015-11-09 08:36:05 -0800 | [diff] [blame] | 69 | SkPaint paint; |
bungeman | fbd87d6 | 2015-11-10 13:29:43 -0800 | [diff] [blame] | 70 | SkSafeUnref(paint.setShader(make_shader(SkRect::MakeWH(N, N)))); |
reed | 73f6cfc | 2015-11-09 08:36:05 -0800 | [diff] [blame] | 71 | |
| 72 | canvas->drawPath(path, paint); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 73 | return surface->newImageSnapshot(); |
| 74 | } |
| 75 | |
reed | 7b6945b | 2015-09-24 00:50:58 -0700 | [diff] [blame] | 76 | static SkImage* zoom_up(SkSurface* origSurf, SkImage* orig) { |
reed | 73f6cfc | 2015-11-09 08:36:05 -0800 | [diff] [blame] | 77 | const SkScalar S = 16; // amount to scale up |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 78 | const int D = 2; // dimension scaling for the offscreen |
| 79 | // since we only view the center, don't need to produce the entire thing |
| 80 | |
| 81 | SkImageInfo info = SkImageInfo::MakeN32(orig->width() * D, orig->height() * D, |
| 82 | kOpaque_SkAlphaType); |
reed | 7b6945b | 2015-09-24 00:50:58 -0700 | [diff] [blame] | 83 | SkAutoTUnref<SkSurface> surface(origSurf->newSurface(info)); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 84 | SkCanvas* canvas = surface->getCanvas(); |
| 85 | canvas->drawColor(SK_ColorWHITE); |
| 86 | canvas->scale(S, S); |
| 87 | canvas->translate(-SkScalarHalf(orig->width()) * (S - D) / S, |
| 88 | -SkScalarHalf(orig->height()) * (S - D) / S); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 89 | canvas->drawImage(orig, 0, 0, nullptr); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 90 | |
| 91 | if (S > 3) { |
| 92 | SkPaint paint; |
| 93 | paint.setColor(SK_ColorWHITE); |
| 94 | for (int i = 1; i < orig->height(); ++i) { |
| 95 | SkScalar y = SkIntToScalar(i); |
| 96 | canvas->drawLine(0, y, SkIntToScalar(orig->width()), y, paint); |
| 97 | } |
| 98 | for (int i = 1; i < orig->width(); ++i) { |
| 99 | SkScalar x = SkIntToScalar(i); |
| 100 | canvas->drawLine(x, 0, x, SkIntToScalar(orig->height()), paint); |
| 101 | } |
| 102 | } |
| 103 | return surface->newImageSnapshot(); |
| 104 | } |
| 105 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 106 | struct AnimValue { |
| 107 | SkScalar fValue; |
| 108 | SkScalar fMin; |
| 109 | SkScalar fMax; |
| 110 | SkScalar fMod; |
| 111 | |
| 112 | operator SkScalar() const { return fValue; } |
| 113 | |
| 114 | void set(SkScalar value, SkScalar min, SkScalar max) { |
| 115 | fValue = value; |
| 116 | fMin = min; |
| 117 | fMax = max; |
| 118 | fMod = 0; |
| 119 | } |
| 120 | |
| 121 | void setMod(SkScalar value, SkScalar mod) { |
| 122 | fValue = value; |
| 123 | fMin = 0; |
| 124 | fMax = 0; |
| 125 | fMod = mod; |
| 126 | } |
| 127 | |
| 128 | SkScalar inc(SkScalar delta) { |
| 129 | fValue += delta; |
| 130 | return this->fixUp(); |
| 131 | } |
| 132 | |
| 133 | SkScalar fixUp() { |
| 134 | if (fMod) { |
| 135 | fValue = SkScalarMod(fValue, fMod); |
| 136 | } else { |
| 137 | if (fValue > fMax) { |
| 138 | fValue = fMax; |
| 139 | } else if (fValue < fMin) { |
| 140 | fValue = fMin; |
| 141 | } |
| 142 | } |
| 143 | return fValue; |
| 144 | } |
| 145 | }; |
| 146 | |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 147 | static void draw_box_frame(SkCanvas* canvas, int width, int height) { |
| 148 | SkPaint p; |
| 149 | p.setStyle(SkPaint::kStroke_Style); |
| 150 | p.setColor(SK_ColorRED); |
| 151 | SkRect r = SkRect::MakeIWH(width, height); |
| 152 | r.inset(0.5f, 0.5f); |
| 153 | canvas->drawRect(r, p); |
| 154 | canvas->drawLine(r.left(), r.top(), r.right(), r.bottom(), p); |
| 155 | canvas->drawLine(r.left(), r.bottom(), r.right(), r.top(), p); |
| 156 | } |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 157 | |
| 158 | class FilterQualityView : public SampleView { |
| 159 | SkAutoTUnref<SkImage> fImage; |
| 160 | AnimValue fScale, fAngle; |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 161 | SkSize fCell; |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 162 | SkInterpolator fTrans; |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 163 | SkMSec fCurrTime; |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 164 | bool fShowFatBits; |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 165 | |
| 166 | public: |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 167 | FilterQualityView() : fImage(make_image()), fTrans(2, 2), fShowFatBits(true) { |
| 168 | fCell.set(256, 256); |
| 169 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 170 | fScale.set(1, SK_Scalar1 / 8, 1); |
| 171 | fAngle.setMod(0, 360); |
| 172 | |
| 173 | SkScalar values[2]; |
| 174 | fTrans.setMirror(true); |
| 175 | fTrans.setReset(true); |
| 176 | |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 177 | fCurrTime = 0; |
| 178 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 179 | fTrans.setRepeatCount(999); |
| 180 | values[0] = values[1] = 0; |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 181 | fTrans.setKeyFrame(0, fCurrTime, values); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 182 | values[0] = values[1] = 1; |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 183 | fTrans.setKeyFrame(1, fCurrTime + 2000, values); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 184 | } |
| 185 | |
| 186 | protected: |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 187 | bool onQuery(SkEvent* evt) override { |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 188 | if (SampleCode::TitleQ(*evt)) { |
| 189 | SampleCode::TitleR(evt, "FilterQuality"); |
| 190 | return true; |
| 191 | } |
| 192 | SkUnichar uni; |
| 193 | if (SampleCode::CharQ(*evt, &uni)) { |
| 194 | switch (uni) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 195 | case '1': fAngle.inc(-ANGLE_DELTA); this->inval(nullptr); return true; |
| 196 | case '2': fAngle.inc( ANGLE_DELTA); this->inval(nullptr); return true; |
| 197 | case '3': fScale.inc(-SCALE_DELTA); this->inval(nullptr); return true; |
| 198 | case '4': fScale.inc( SCALE_DELTA); this->inval(nullptr); return true; |
| 199 | case '5': fShowFatBits = !fShowFatBits; this->inval(nullptr); return true; |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 200 | default: break; |
| 201 | } |
| 202 | } |
| 203 | return this->INHERITED::onQuery(evt); |
| 204 | } |
| 205 | |
reed | 93a1215 | 2015-03-16 10:08:34 -0700 | [diff] [blame] | 206 | void drawTheImage(SkCanvas* canvas, const SkISize& size, SkFilterQuality filter, |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 207 | SkScalar dx, SkScalar dy) { |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 208 | SkPaint paint; |
| 209 | paint.setAntiAlias(true); |
reed | 93a1215 | 2015-03-16 10:08:34 -0700 | [diff] [blame] | 210 | paint.setFilterQuality(filter); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 211 | |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 212 | SkAutoCanvasRestore acr(canvas, true); |
| 213 | |
| 214 | canvas->translate(dx, dy); |
| 215 | |
| 216 | canvas->translate(SkScalarHalf(size.width()), SkScalarHalf(size.height())); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 217 | canvas->scale(fScale, fScale); |
| 218 | canvas->rotate(fAngle); |
| 219 | canvas->drawImage(fImage, -SkScalarHalf(fImage->width()), -SkScalarHalf(fImage->height()), |
| 220 | &paint); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 221 | |
| 222 | if (false) { |
| 223 | acr.restore(); |
| 224 | draw_box_frame(canvas, size.width(), size.height()); |
| 225 | } |
| 226 | } |
| 227 | |
reed | 93a1215 | 2015-03-16 10:08:34 -0700 | [diff] [blame] | 228 | void drawHere(SkCanvas* canvas, SkFilterQuality filter, SkScalar dx, SkScalar dy) { |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 229 | SkCanvas* origCanvas = canvas; |
| 230 | SkAutoCanvasRestore acr(canvas, true); |
| 231 | |
| 232 | SkISize size = SkISize::Make(fImage->width(), fImage->height()); |
| 233 | |
| 234 | SkAutoTUnref<SkSurface> surface; |
| 235 | if (fShowFatBits) { |
| 236 | // scale up so we don't clip rotations |
| 237 | SkImageInfo info = SkImageInfo::MakeN32(fImage->width() * 2, fImage->height() * 2, |
| 238 | kOpaque_SkAlphaType); |
| 239 | surface.reset(make_surface(canvas, info)); |
| 240 | canvas = surface->getCanvas(); |
| 241 | canvas->drawColor(SK_ColorWHITE); |
| 242 | size.set(info.width(), info.height()); |
| 243 | } else { |
| 244 | canvas->translate(SkScalarHalf(fCell.width() - fImage->width()), |
| 245 | SkScalarHalf(fCell.height() - fImage->height())); |
| 246 | } |
| 247 | this->drawTheImage(canvas, size, filter, dx, dy); |
| 248 | |
| 249 | if (surface) { |
| 250 | SkAutoTUnref<SkImage> orig(surface->newImageSnapshot()); |
reed | 7b6945b | 2015-09-24 00:50:58 -0700 | [diff] [blame] | 251 | SkAutoTUnref<SkImage> zoomed(zoom_up(surface, orig)); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 252 | origCanvas->drawImage(zoomed, |
| 253 | SkScalarHalf(fCell.width() - zoomed->width()), |
| 254 | SkScalarHalf(fCell.height() - zoomed->height())); |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | void drawBorders(SkCanvas* canvas) { |
| 259 | SkPaint p; |
| 260 | p.setStyle(SkPaint::kStroke_Style); |
| 261 | p.setColor(SK_ColorBLUE); |
| 262 | |
| 263 | SkRect r = SkRect::MakeWH(fCell.width() * 2, fCell.height() * 2); |
| 264 | r.inset(SK_ScalarHalf, SK_ScalarHalf); |
| 265 | canvas->drawRect(r, p); |
| 266 | canvas->drawLine(r.left(), r.centerY(), r.right(), r.centerY(), p); |
| 267 | canvas->drawLine(r.centerX(), r.top(), r.centerX(), r.bottom(), p); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 268 | } |
| 269 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 270 | void onDrawContent(SkCanvas* canvas) override { |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 271 | fCell.set(this->height() / 2, this->height() / 2); |
| 272 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 273 | SkScalar trans[2]; |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 274 | fTrans.timeToValues(fCurrTime, trans); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 275 | |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 276 | for (int y = 0; y < 2; ++y) { |
| 277 | for (int x = 0; x < 2; ++x) { |
| 278 | int index = y * 2 + x; |
| 279 | SkAutoCanvasRestore acr(canvas, true); |
| 280 | canvas->translate(fCell.width() * x, fCell.height() * y); |
| 281 | SkRect r = SkRect::MakeWH(fCell.width(), fCell.height()); |
| 282 | r.inset(4, 4); |
| 283 | canvas->clipRect(r); |
reed | 93a1215 | 2015-03-16 10:08:34 -0700 | [diff] [blame] | 284 | this->drawHere(canvas, SkFilterQuality(index), trans[0], trans[1]); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 285 | } |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 286 | } |
| 287 | |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 288 | this->drawBorders(canvas); |
| 289 | |
| 290 | const SkScalar textX = fCell.width() * 2 + 30; |
| 291 | |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 292 | SkPaint paint; |
| 293 | paint.setAntiAlias(true); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 294 | paint.setTextSize(36); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 295 | SkString str; |
| 296 | str.appendScalar(fScale); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 297 | canvas->drawText(str.c_str(), str.size(), textX, 100, paint); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 298 | str.reset(); str.appendScalar(fAngle); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 299 | canvas->drawText(str.c_str(), str.size(), textX, 150, paint); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 300 | |
| 301 | str.reset(); str.appendScalar(trans[0]); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 302 | canvas->drawText(str.c_str(), str.size(), textX, 200, paint); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 303 | str.reset(); str.appendScalar(trans[1]); |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 304 | canvas->drawText(str.c_str(), str.size(), textX, 250, paint); |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 305 | } |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 306 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 307 | bool onAnimate(const SkAnimTimer& timer) override { |
reed | 339cdbf | 2015-02-05 22:02:37 -0800 | [diff] [blame] | 308 | fCurrTime = timer.msec(); |
| 309 | return true; |
reed | 09519db | 2015-01-17 19:36:08 -0800 | [diff] [blame] | 310 | } |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 311 | |
| 312 | virtual bool handleKey(SkKey key) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 313 | this->inval(nullptr); |
reed | afdbedb | 2015-01-14 13:16:26 -0800 | [diff] [blame] | 314 | return true; |
| 315 | } |
| 316 | |
| 317 | private: |
| 318 | typedef SampleView INHERITED; |
| 319 | }; |
| 320 | |
| 321 | ////////////////////////////////////////////////////////////////////////////// |
| 322 | |
| 323 | static SkView* MyFactory() { return new FilterQualityView; } |
| 324 | static SkViewRegister reg(MyFactory); |