caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 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 | |
Ben Wagner | b2c4ea6 | 2018-08-08 11:36:17 -0400 | [diff] [blame] | 8 | #include "Sample.h" |
Ben Wagner | cb3d49c | 2018-03-14 15:07:43 -0400 | [diff] [blame] | 9 | #include "SkBlendMode.h" |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 10 | #include "SkCanvas.h" |
Ben Wagner | cb3d49c | 2018-03-14 15:07:43 -0400 | [diff] [blame] | 11 | #include "SkColor.h" |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 12 | #include "SkGeometry.h" |
Ben Wagner | cb3d49c | 2018-03-14 15:07:43 -0400 | [diff] [blame] | 13 | #include "SkImageInfo.h" |
| 14 | #include "SkMatrix.h" |
| 15 | #include "SkPaint.h" |
| 16 | #include "SkPath.h" |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 17 | #include "SkPathMeasure.h" |
Ben Wagner | cb3d49c | 2018-03-14 15:07:43 -0400 | [diff] [blame] | 18 | #include "SkPoint.h" |
Cary Clark | df429f3 | 2017-11-08 11:44:31 -0500 | [diff] [blame] | 19 | #include "SkPointPriv.h" |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 20 | #include "SkRRect.h" |
Ben Wagner | cb3d49c | 2018-03-14 15:07:43 -0400 | [diff] [blame] | 21 | #include "SkRect.h" |
| 22 | #include "SkRefCnt.h" |
| 23 | #include "SkScalar.h" |
| 24 | #include "SkShader.h" |
| 25 | #include "SkString.h" |
| 26 | #include "SkStroke.h" |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 27 | #include "SkSurface.h" |
Ben Wagner | cb3d49c | 2018-03-14 15:07:43 -0400 | [diff] [blame] | 28 | #include "SkTArray.h" |
| 29 | #include "SkTemplates.h" |
| 30 | #include "SkTypes.h" |
Ben Wagner | cb3d49c | 2018-03-14 15:07:43 -0400 | [diff] [blame] | 31 | #include "sk_tool_utils.h" |
| 32 | |
| 33 | #include <cfloat> |
| 34 | |
| 35 | class SkEvent; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 36 | |
| 37 | static bool hittest(const SkPoint& target, SkScalar x, SkScalar y) { |
| 38 | const SkScalar TOL = 7; |
| 39 | return SkPoint::Distance(target, SkPoint::Make(x, y)) <= TOL; |
| 40 | } |
| 41 | |
| 42 | static int getOnCurvePoints(const SkPath& path, SkPoint storage[]) { |
| 43 | SkPath::RawIter iter(path); |
| 44 | SkPoint pts[4]; |
| 45 | SkPath::Verb verb; |
| 46 | |
| 47 | int count = 0; |
| 48 | while ((verb = iter.next(pts)) != SkPath::kDone_Verb) { |
| 49 | switch (verb) { |
| 50 | case SkPath::kMove_Verb: |
| 51 | case SkPath::kLine_Verb: |
| 52 | case SkPath::kQuad_Verb: |
| 53 | case SkPath::kConic_Verb: |
| 54 | case SkPath::kCubic_Verb: |
| 55 | storage[count++] = pts[0]; |
| 56 | break; |
| 57 | default: |
| 58 | break; |
| 59 | } |
| 60 | } |
| 61 | return count; |
| 62 | } |
| 63 | |
| 64 | static void getContourCounts(const SkPath& path, SkTArray<int>* contourCounts) { |
| 65 | SkPath::RawIter iter(path); |
| 66 | SkPoint pts[4]; |
| 67 | SkPath::Verb verb; |
| 68 | |
| 69 | int count = 0; |
| 70 | while ((verb = iter.next(pts)) != SkPath::kDone_Verb) { |
| 71 | switch (verb) { |
| 72 | case SkPath::kMove_Verb: |
| 73 | case SkPath::kLine_Verb: |
| 74 | count += 1; |
| 75 | break; |
| 76 | case SkPath::kQuad_Verb: |
| 77 | case SkPath::kConic_Verb: |
| 78 | count += 2; |
| 79 | break; |
| 80 | case SkPath::kCubic_Verb: |
| 81 | count += 3; |
| 82 | break; |
| 83 | case SkPath::kClose_Verb: |
| 84 | contourCounts->push_back(count); |
| 85 | count = 0; |
| 86 | break; |
| 87 | default: |
| 88 | break; |
| 89 | } |
| 90 | } |
| 91 | if (count > 0) { |
| 92 | contourCounts->push_back(count); |
| 93 | } |
| 94 | } |
| 95 | |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 96 | static void erase(const sk_sp<SkSurface>& surface) { |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 97 | SkCanvas* canvas = surface->getCanvas(); |
| 98 | if (canvas) { |
| 99 | canvas->clear(SK_ColorTRANSPARENT); |
| 100 | } |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | struct StrokeTypeButton { |
| 104 | SkRect fBounds; |
| 105 | char fLabel; |
| 106 | bool fEnabled; |
| 107 | }; |
| 108 | |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 109 | struct CircleTypeButton : public StrokeTypeButton { |
| 110 | bool fFill; |
| 111 | }; |
| 112 | |
Ben Wagner | b2c4ea6 | 2018-08-08 11:36:17 -0400 | [diff] [blame] | 113 | class QuadStrokerView : public Sample { |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 114 | enum { |
| 115 | SKELETON_COLOR = 0xFF0000FF, |
| 116 | WIREFRAME_COLOR = 0x80FF0000 |
| 117 | }; |
| 118 | |
| 119 | enum { |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 120 | kCount = 18 |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 121 | }; |
| 122 | SkPoint fPts[kCount]; |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 123 | SkRect fWeightControl; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 124 | SkRect fRadiusControl; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 125 | SkRect fErrorControl; |
| 126 | SkRect fWidthControl; |
| 127 | SkRect fBounds; |
| 128 | SkMatrix fMatrix, fInverse; |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame] | 129 | sk_sp<SkShader> fShader; |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 130 | sk_sp<SkSurface> fMinSurface; |
| 131 | sk_sp<SkSurface> fMaxSurface; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 132 | StrokeTypeButton fCubicButton; |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 133 | StrokeTypeButton fConicButton; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 134 | StrokeTypeButton fQuadButton; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 135 | StrokeTypeButton fArcButton; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 136 | StrokeTypeButton fRRectButton; |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 137 | CircleTypeButton fCircleButton; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 138 | StrokeTypeButton fTextButton; |
| 139 | SkString fText; |
| 140 | SkScalar fTextSize; |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 141 | SkScalar fWeight; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 142 | SkScalar fRadius; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 143 | SkScalar fWidth, fDWidth; |
| 144 | SkScalar fWidthScale; |
| 145 | int fW, fH, fZoom; |
| 146 | bool fAnimate; |
| 147 | bool fDrawRibs; |
| 148 | bool fDrawTangents; |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 149 | bool fDrawTDivs; |
caryclark | a76b7a3b | 2015-05-22 06:26:52 -0700 | [diff] [blame] | 150 | #ifdef SK_DEBUG |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 151 | #define kStrokerErrorMin 0.001f |
| 152 | #define kStrokerErrorMax 5 |
| 153 | #endif |
| 154 | #define kWidthMin 1 |
| 155 | #define kWidthMax 100 |
| 156 | public: |
| 157 | QuadStrokerView() { |
| 158 | this->setBGColor(SK_ColorLTGRAY); |
| 159 | |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 160 | fPts[0].set(50, 200); // cubic |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 161 | fPts[1].set(50, 100); |
| 162 | fPts[2].set(150, 50); |
| 163 | fPts[3].set(300, 50); |
| 164 | |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 165 | fPts[4].set(350, 200); // conic |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 166 | fPts[5].set(350, 100); |
| 167 | fPts[6].set(450, 50); |
| 168 | |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 169 | fPts[7].set(150, 300); // quad |
| 170 | fPts[8].set(150, 200); |
| 171 | fPts[9].set(250, 150); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 172 | |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 173 | fPts[10].set(250, 200); // arc |
| 174 | fPts[11].set(250, 300); |
| 175 | fPts[12].set(150, 350); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 176 | |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 177 | fPts[13].set(200, 200); // rrect |
| 178 | fPts[14].set(400, 400); |
| 179 | |
| 180 | fPts[15].set(250, 250); // oval |
| 181 | fPts[16].set(450, 450); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 182 | |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 183 | fText = "a"; |
| 184 | fTextSize = 12; |
| 185 | fWidth = 50; |
| 186 | fDWidth = 0.25f; |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 187 | fWeight = 1; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 188 | fRadius = 150; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 189 | |
| 190 | fCubicButton.fLabel = 'C'; |
| 191 | fCubicButton.fEnabled = false; |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 192 | fConicButton.fLabel = 'K'; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 193 | fConicButton.fEnabled = false; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 194 | fQuadButton.fLabel = 'Q'; |
| 195 | fQuadButton.fEnabled = false; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 196 | fArcButton.fLabel = 'A'; |
| 197 | fArcButton.fEnabled = true; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 198 | fRRectButton.fLabel = 'R'; |
| 199 | fRRectButton.fEnabled = false; |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 200 | fCircleButton.fLabel = 'O'; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 201 | fCircleButton.fEnabled = true; |
| 202 | fCircleButton.fFill = true; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 203 | fTextButton.fLabel = 'T'; |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 204 | fTextButton.fEnabled = false; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 205 | fAnimate = false; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 206 | setAsNeeded(); |
| 207 | } |
| 208 | |
| 209 | protected: |
Ben Wagner | b2c4ea6 | 2018-08-08 11:36:17 -0400 | [diff] [blame] | 210 | bool onQuery(Sample::Event* evt) override { |
| 211 | if (Sample::TitleQ(*evt)) { |
| 212 | Sample::TitleR(evt, "QuadStroker"); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 213 | return true; |
| 214 | } |
| 215 | SkUnichar uni; |
Ben Wagner | b2c4ea6 | 2018-08-08 11:36:17 -0400 | [diff] [blame] | 216 | if (fTextButton.fEnabled && Sample::CharQ(*evt, &uni)) { |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 217 | switch (uni) { |
| 218 | case ' ': |
| 219 | fText = ""; |
| 220 | break; |
| 221 | case '-': |
| 222 | fTextSize = SkTMax(1.0f, fTextSize - 1); |
| 223 | break; |
| 224 | case '+': |
| 225 | case '=': |
| 226 | fTextSize += 1; |
| 227 | break; |
| 228 | default: |
| 229 | fText.appendUnichar(uni); |
| 230 | } |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 231 | return true; |
| 232 | } |
| 233 | return this->INHERITED::onQuery(evt); |
| 234 | } |
| 235 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 236 | void onSizeChange() override { |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 237 | fRadiusControl.setXYWH(this->width() - 200, 30, 30, 400); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 238 | fWeightControl.setXYWH(this->width() - 150, 30, 30, 400); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 239 | fErrorControl.setXYWH(this->width() - 100, 30, 30, 400); |
| 240 | fWidthControl.setXYWH(this->width() - 50, 30, 30, 400); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 241 | int buttonOffset = 450; |
| 242 | fCubicButton.fBounds.setXYWH(this->width() - 50, SkIntToScalar(buttonOffset), 30, 30); |
| 243 | buttonOffset += 50; |
| 244 | fConicButton.fBounds.setXYWH(this->width() - 50, SkIntToScalar(buttonOffset), 30, 30); |
| 245 | buttonOffset += 50; |
| 246 | fQuadButton.fBounds.setXYWH(this->width() - 50, SkIntToScalar(buttonOffset), 30, 30); |
| 247 | buttonOffset += 50; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 248 | fArcButton.fBounds.setXYWH(this->width() - 50, SkIntToScalar(buttonOffset), 30, 30); |
| 249 | buttonOffset += 50; |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 250 | fRRectButton.fBounds.setXYWH(this->width() - 50, SkIntToScalar(buttonOffset), 30, 30); |
| 251 | buttonOffset += 50; |
| 252 | fCircleButton.fBounds.setXYWH(this->width() - 50, SkIntToScalar(buttonOffset), 30, 30); |
| 253 | buttonOffset += 50; |
| 254 | fTextButton.fBounds.setXYWH(this->width() - 50, SkIntToScalar(buttonOffset), 30, 30); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 255 | this->INHERITED::onSizeChange(); |
| 256 | } |
| 257 | |
| 258 | void copyMinToMax() { |
| 259 | erase(fMaxSurface); |
| 260 | SkCanvas* canvas = fMaxSurface->getCanvas(); |
| 261 | canvas->save(); |
| 262 | canvas->concat(fMatrix); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 263 | fMinSurface->draw(canvas, 0, 0, nullptr); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 264 | canvas->restore(); |
| 265 | |
| 266 | SkPaint paint; |
reed | 374772b | 2016-10-05 17:33:02 -0700 | [diff] [blame] | 267 | paint.setBlendMode(SkBlendMode::kClear); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 268 | for (int iy = 1; iy < fH; ++iy) { |
| 269 | SkScalar y = SkIntToScalar(iy * fZoom); |
| 270 | canvas->drawLine(0, y - SK_ScalarHalf, 999, y - SK_ScalarHalf, paint); |
| 271 | } |
| 272 | for (int ix = 1; ix < fW; ++ix) { |
| 273 | SkScalar x = SkIntToScalar(ix * fZoom); |
| 274 | canvas->drawLine(x - SK_ScalarHalf, 0, x - SK_ScalarHalf, 999, paint); |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | void setWHZ(int width, int height, int zoom) { |
| 279 | fZoom = zoom; |
| 280 | fBounds.set(0, 0, SkIntToScalar(width * zoom), SkIntToScalar(height * zoom)); |
| 281 | fMatrix.setScale(SkIntToScalar(zoom), SkIntToScalar(zoom)); |
| 282 | fInverse.setScale(SK_Scalar1 / zoom, SK_Scalar1 / zoom); |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame] | 283 | fShader = sk_tool_utils::create_checkerboard_shader(0xFFCCCCCC, 0xFFFFFFFF, zoom); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 284 | |
| 285 | SkImageInfo info = SkImageInfo::MakeN32Premul(width, height); |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 286 | fMinSurface = SkSurface::MakeRaster(info); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 287 | info = info.makeWH(width * zoom, height * zoom); |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 288 | fMaxSurface = SkSurface::MakeRaster(info); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 289 | } |
| 290 | |
| 291 | void draw_points(SkCanvas* canvas, const SkPath& path, SkColor color, |
| 292 | bool show_lines) { |
| 293 | SkPaint paint; |
| 294 | paint.setColor(color); |
| 295 | paint.setAlpha(0x80); |
| 296 | paint.setAntiAlias(true); |
| 297 | int n = path.countPoints(); |
| 298 | SkAutoSTArray<32, SkPoint> pts(n); |
| 299 | if (show_lines && fDrawTangents) { |
| 300 | SkTArray<int> contourCounts; |
| 301 | getContourCounts(path, &contourCounts); |
| 302 | SkPoint* ptPtr = pts.get(); |
| 303 | for (int i = 0; i < contourCounts.count(); ++i) { |
| 304 | int count = contourCounts[i]; |
| 305 | path.getPoints(ptPtr, count); |
| 306 | canvas->drawPoints(SkCanvas::kPolygon_PointMode, count, ptPtr, paint); |
| 307 | ptPtr += count; |
| 308 | } |
| 309 | } else { |
| 310 | n = getOnCurvePoints(path, pts.get()); |
| 311 | } |
| 312 | paint.setStrokeWidth(5); |
| 313 | canvas->drawPoints(SkCanvas::kPoints_PointMode, n, pts.get(), paint); |
| 314 | } |
| 315 | |
| 316 | void draw_ribs(SkCanvas* canvas, const SkPath& path, SkScalar width, |
| 317 | SkColor color) { |
| 318 | const SkScalar radius = width / 2; |
| 319 | |
| 320 | SkPathMeasure meas(path, false); |
| 321 | SkScalar total = meas.getLength(); |
| 322 | |
| 323 | SkScalar delta = 8; |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 324 | SkPaint paint, labelP; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 325 | paint.setColor(color); |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 326 | labelP.setColor(color & 0xff5f9f5f); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 327 | SkPoint pos, tan; |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 328 | int index = 0; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 329 | for (SkScalar dist = 0; dist <= total; dist += delta) { |
| 330 | if (meas.getPosTan(dist, &pos, &tan)) { |
| 331 | tan.scale(radius); |
Cary Clark | df429f3 | 2017-11-08 11:44:31 -0500 | [diff] [blame] | 332 | SkPointPriv::RotateCCW(&tan); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 333 | canvas->drawLine(pos.x() + tan.x(), pos.y() + tan.y(), |
| 334 | pos.x() - tan.x(), pos.y() - tan.y(), paint); |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 335 | if (0 == index % 10) { |
| 336 | SkString label; |
| 337 | label.appendS32(index); |
| 338 | SkRect dot = SkRect::MakeXYWH(pos.x() - 2, pos.y() - 2, 4, 4); |
| 339 | canvas->drawRect(dot, labelP); |
Cary Clark | 2a475ea | 2017-04-28 15:35:12 -0400 | [diff] [blame] | 340 | canvas->drawString(label, |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 341 | pos.x() - tan.x() * 1.25f, pos.y() - tan.y() * 1.25f, labelP); |
| 342 | } |
| 343 | } |
| 344 | ++index; |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | void draw_t_divs(SkCanvas* canvas, const SkPath& path, SkScalar width, SkColor color) { |
| 349 | const SkScalar radius = width / 2; |
| 350 | SkPaint paint; |
| 351 | paint.setColor(color); |
| 352 | SkPathMeasure meas(path, false); |
| 353 | SkScalar total = meas.getLength(); |
| 354 | SkScalar delta = 8; |
| 355 | int ribs = 0; |
| 356 | for (SkScalar dist = 0; dist <= total; dist += delta) { |
| 357 | ++ribs; |
| 358 | } |
| 359 | SkPath::RawIter iter(path); |
| 360 | SkPoint pts[4]; |
| 361 | if (SkPath::kMove_Verb != iter.next(pts)) { |
| 362 | SkASSERT(0); |
| 363 | return; |
| 364 | } |
| 365 | SkPath::Verb verb = iter.next(pts); |
| 366 | SkASSERT(SkPath::kLine_Verb <= verb && verb <= SkPath::kCubic_Verb); |
| 367 | SkPoint pos, tan; |
| 368 | for (int index = 0; index < ribs; ++index) { |
| 369 | SkScalar t = (SkScalar) index / ribs; |
| 370 | switch (verb) { |
| 371 | case SkPath::kLine_Verb: |
| 372 | tan = pts[1] - pts[0]; |
| 373 | pos = pts[0]; |
| 374 | pos.fX += tan.fX * t; |
| 375 | pos.fY += tan.fY * t; |
| 376 | break; |
| 377 | case SkPath::kQuad_Verb: |
| 378 | pos = SkEvalQuadAt(pts, t); |
| 379 | tan = SkEvalQuadTangentAt(pts, t); |
| 380 | break; |
| 381 | case SkPath::kConic_Verb: { |
| 382 | SkConic conic(pts, iter.conicWeight()); |
| 383 | pos = conic.evalAt(t); |
| 384 | tan = conic.evalTangentAt(t); |
| 385 | } break; |
| 386 | case SkPath::kCubic_Verb: |
| 387 | SkEvalCubicAt(pts, t, &pos, &tan, nullptr); |
| 388 | break; |
| 389 | default: |
| 390 | SkASSERT(0); |
| 391 | return; |
| 392 | } |
| 393 | tan.setLength(radius); |
Cary Clark | df429f3 | 2017-11-08 11:44:31 -0500 | [diff] [blame] | 394 | SkPointPriv::RotateCCW(&tan); |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 395 | canvas->drawLine(pos.x() + tan.x(), pos.y() + tan.y(), |
| 396 | pos.x() - tan.x(), pos.y() - tan.y(), paint); |
| 397 | if (0 == index % 10) { |
| 398 | SkString label; |
| 399 | label.appendS32(index); |
Cary Clark | 2a475ea | 2017-04-28 15:35:12 -0400 | [diff] [blame] | 400 | canvas->drawString(label, |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 401 | pos.x() + tan.x() * 1.25f, pos.y() + tan.y() * 1.25f, paint); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 402 | } |
| 403 | } |
| 404 | } |
| 405 | |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 406 | void draw_stroke(SkCanvas* canvas, const SkPath& path, SkScalar width, SkScalar scale, |
| 407 | bool drawText) { |
caryclark | 612f70d | 2015-05-19 11:05:37 -0700 | [diff] [blame] | 408 | if (path.isEmpty()) { |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 409 | return; |
| 410 | } |
caryclark | 612f70d | 2015-05-19 11:05:37 -0700 | [diff] [blame] | 411 | SkRect bounds = path.getBounds(); |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 412 | this->setWHZ(SkScalarCeilToInt(bounds.right()), drawText |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 413 | ? SkScalarRoundToInt(scale * 3 / 2) : SkScalarRoundToInt(scale), |
| 414 | SkScalarRoundToInt(950.0f / scale)); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 415 | erase(fMinSurface); |
| 416 | SkPaint paint; |
| 417 | paint.setColor(0x1f1f0f0f); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 418 | paint.setStyle(SkPaint::kStroke_Style); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 419 | paint.setStrokeWidth(width * scale * scale); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 420 | paint.setColor(0x3f0f1f3f); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 421 | if (drawText) { |
| 422 | fMinSurface->getCanvas()->drawPath(path, paint); |
| 423 | this->copyMinToMax(); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 424 | fMaxSurface->draw(canvas, 0, 0, nullptr); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 425 | } |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 426 | paint.setAntiAlias(true); |
| 427 | paint.setStyle(SkPaint::kStroke_Style); |
| 428 | paint.setStrokeWidth(1); |
| 429 | |
| 430 | paint.setColor(SKELETON_COLOR); |
| 431 | SkPath scaled; |
| 432 | SkMatrix matrix; |
| 433 | matrix.reset(); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 434 | matrix.setScale(950 / scale, 950 / scale); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 435 | if (drawText) { |
| 436 | path.transform(matrix, &scaled); |
| 437 | } else { |
| 438 | scaled = path; |
| 439 | } |
| 440 | canvas->drawPath(scaled, paint); |
| 441 | draw_points(canvas, scaled, SKELETON_COLOR, true); |
| 442 | |
| 443 | if (fDrawRibs) { |
| 444 | draw_ribs(canvas, scaled, width, 0xFF00FF00); |
| 445 | } |
| 446 | |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 447 | if (fDrawTDivs) { |
| 448 | draw_t_divs(canvas, scaled, width, 0xFF3F3F00); |
| 449 | } |
| 450 | |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 451 | SkPath fill; |
| 452 | |
| 453 | SkPaint p; |
| 454 | p.setStyle(SkPaint::kStroke_Style); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 455 | if (drawText) { |
| 456 | p.setStrokeWidth(width * scale * scale); |
| 457 | } else { |
| 458 | p.setStrokeWidth(width); |
| 459 | } |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 460 | p.getFillPath(path, &fill); |
| 461 | SkPath scaledFill; |
| 462 | if (drawText) { |
| 463 | fill.transform(matrix, &scaledFill); |
| 464 | } else { |
| 465 | scaledFill = fill; |
| 466 | } |
| 467 | paint.setColor(WIREFRAME_COLOR); |
| 468 | canvas->drawPath(scaledFill, paint); |
| 469 | draw_points(canvas, scaledFill, WIREFRAME_COLOR, false); |
| 470 | } |
| 471 | |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 472 | void draw_fill(SkCanvas* canvas, const SkRect& rect, SkScalar width) { |
| 473 | if (rect.isEmpty()) { |
| 474 | return; |
| 475 | } |
| 476 | SkPaint paint; |
| 477 | paint.setColor(0x1f1f0f0f); |
| 478 | paint.setStyle(SkPaint::kStroke_Style); |
| 479 | paint.setStrokeWidth(width); |
| 480 | SkPath path; |
| 481 | SkScalar maxSide = SkTMax(rect.width(), rect.height()) / 2; |
| 482 | SkPoint center = { rect.fLeft + maxSide, rect.fTop + maxSide }; |
| 483 | path.addCircle(center.fX, center.fY, maxSide); |
| 484 | canvas->drawPath(path, paint); |
| 485 | paint.setStyle(SkPaint::kFill_Style); |
| 486 | path.reset(); |
| 487 | path.addCircle(center.fX, center.fY, maxSide - width / 2); |
| 488 | paint.setColor(0x3f0f1f3f); |
| 489 | canvas->drawPath(path, paint); |
| 490 | path.reset(); |
| 491 | path.setFillType(SkPath::kEvenOdd_FillType); |
| 492 | path.addCircle(center.fX, center.fY, maxSide + width / 2); |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 493 | SkRect outside = SkRect::MakeXYWH(center.fX - maxSide - width, center.fY - maxSide - width, |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 494 | (maxSide + width) * 2, (maxSide + width) * 2); |
| 495 | path.addRect(outside); |
| 496 | canvas->drawPath(path, paint); |
| 497 | } |
| 498 | |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 499 | void draw_button(SkCanvas* canvas, const StrokeTypeButton& button) { |
| 500 | SkPaint paint; |
| 501 | paint.setAntiAlias(true); |
| 502 | paint.setStyle(SkPaint::kStroke_Style); |
| 503 | paint.setColor(button.fEnabled ? 0xFF3F0000 : 0x6F3F0000); |
| 504 | canvas->drawRect(button.fBounds, paint); |
| 505 | paint.setTextSize(25.0f); |
| 506 | paint.setColor(button.fEnabled ? 0xFF3F0000 : 0x6F3F0000); |
| 507 | paint.setTextAlign(SkPaint::kCenter_Align); |
| 508 | paint.setStyle(SkPaint::kFill_Style); |
| 509 | canvas->drawText(&button.fLabel, 1, button.fBounds.centerX(), button.fBounds.fBottom - 5, |
| 510 | paint); |
| 511 | } |
| 512 | |
| 513 | void draw_control(SkCanvas* canvas, const SkRect& bounds, SkScalar value, |
| 514 | SkScalar min, SkScalar max, const char* name) { |
| 515 | SkPaint paint; |
| 516 | paint.setAntiAlias(true); |
| 517 | paint.setStyle(SkPaint::kStroke_Style); |
| 518 | canvas->drawRect(bounds, paint); |
| 519 | SkScalar scale = max - min; |
| 520 | SkScalar yPos = bounds.fTop + (value - min) * bounds.height() / scale; |
| 521 | paint.setColor(0xFFFF0000); |
| 522 | canvas->drawLine(bounds.fLeft - 5, yPos, bounds.fRight + 5, yPos, paint); |
| 523 | SkString label; |
| 524 | label.printf("%0.3g", value); |
| 525 | paint.setColor(0xFF000000); |
| 526 | paint.setTextSize(11.0f); |
| 527 | paint.setStyle(SkPaint::kFill_Style); |
Cary Clark | 2a475ea | 2017-04-28 15:35:12 -0400 | [diff] [blame] | 528 | canvas->drawString(label, bounds.fLeft + 5, yPos - 5, paint); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 529 | paint.setTextSize(13.0f); |
Cary Clark | 2a475ea | 2017-04-28 15:35:12 -0400 | [diff] [blame] | 530 | canvas->drawString(name, bounds.fLeft, bounds.bottom() + 11, paint); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 531 | } |
| 532 | |
| 533 | void setForGeometry() { |
| 534 | fDrawRibs = true; |
| 535 | fDrawTangents = true; |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 536 | fDrawTDivs = false; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 537 | fWidthScale = 1; |
| 538 | } |
| 539 | |
| 540 | void setForText() { |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 541 | fDrawRibs = fDrawTangents = fDrawTDivs = false; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 542 | fWidthScale = 0.002f; |
| 543 | } |
| 544 | |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 545 | void setForSingles() { |
| 546 | setForGeometry(); |
| 547 | fDrawTDivs = true; |
| 548 | } |
| 549 | |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 550 | void setAsNeeded() { |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 551 | if (fConicButton.fEnabled || fCubicButton.fEnabled || fQuadButton.fEnabled) { |
| 552 | setForSingles(); |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 553 | } else if (fRRectButton.fEnabled || fCircleButton.fEnabled || fArcButton.fEnabled) { |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 554 | setForGeometry(); |
| 555 | } else { |
| 556 | setForText(); |
| 557 | } |
| 558 | } |
| 559 | |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 560 | bool arcCenter(SkPoint* center) { |
| 561 | SkPath path; |
| 562 | path.moveTo(fPts[10]); |
| 563 | path.arcTo(fPts[11], fPts[12], fRadius); |
| 564 | SkPath::Iter iter(path, false); |
| 565 | SkPoint pts[4]; |
| 566 | iter.next(pts); |
| 567 | if (SkPath::kLine_Verb == iter.next(pts)) { |
| 568 | iter.next(pts); |
| 569 | } |
| 570 | SkVector before = pts[0] - pts[1]; |
| 571 | SkVector after = pts[1] - pts[2]; |
| 572 | before.setLength(fRadius); |
| 573 | after.setLength(fRadius); |
| 574 | SkVector beforeCCW, afterCCW; |
Cary Clark | df429f3 | 2017-11-08 11:44:31 -0500 | [diff] [blame] | 575 | SkPointPriv::RotateCCW(before, &beforeCCW); |
| 576 | SkPointPriv::RotateCCW(after, &afterCCW); |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 577 | beforeCCW += pts[0]; |
| 578 | afterCCW += pts[2]; |
| 579 | *center = beforeCCW; |
| 580 | if (SkScalarNearlyEqual(beforeCCW.fX, afterCCW.fX) |
| 581 | && SkScalarNearlyEqual(beforeCCW.fY, afterCCW.fY)) { |
| 582 | return true; |
| 583 | } |
| 584 | SkVector beforeCW, afterCW; |
Cary Clark | df429f3 | 2017-11-08 11:44:31 -0500 | [diff] [blame] | 585 | SkPointPriv::RotateCW(before, &beforeCW); |
| 586 | SkPointPriv::RotateCW(after, &afterCW); |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 587 | beforeCW += pts[0]; |
| 588 | afterCW += pts[2]; |
| 589 | *center = beforeCW; |
| 590 | return SkScalarNearlyEqual(beforeCW.fX, afterCW.fX) |
| 591 | && SkScalarNearlyEqual(beforeCCW.fY, afterCW.fY); |
| 592 | } |
| 593 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 594 | void onDrawContent(SkCanvas* canvas) override { |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 595 | SkPath path; |
| 596 | SkScalar width = fWidth; |
| 597 | |
| 598 | if (fCubicButton.fEnabled) { |
| 599 | path.moveTo(fPts[0]); |
| 600 | path.cubicTo(fPts[1], fPts[2], fPts[3]); |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 601 | setForSingles(); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 602 | draw_stroke(canvas, path, width, 950, false); |
| 603 | } |
| 604 | |
| 605 | if (fConicButton.fEnabled) { |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 606 | path.reset(); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 607 | path.moveTo(fPts[4]); |
| 608 | path.conicTo(fPts[5], fPts[6], fWeight); |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 609 | setForSingles(); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 610 | draw_stroke(canvas, path, width, 950, false); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 611 | } |
| 612 | |
| 613 | if (fQuadButton.fEnabled) { |
| 614 | path.reset(); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 615 | path.moveTo(fPts[7]); |
| 616 | path.quadTo(fPts[8], fPts[9]); |
caryclark | b6474dd | 2016-01-19 08:07:49 -0800 | [diff] [blame] | 617 | setForSingles(); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 618 | draw_stroke(canvas, path, width, 950, false); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 619 | } |
| 620 | |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 621 | if (fArcButton.fEnabled) { |
| 622 | path.reset(); |
| 623 | path.moveTo(fPts[10]); |
| 624 | path.arcTo(fPts[11], fPts[12], fRadius); |
| 625 | setForGeometry(); |
| 626 | draw_stroke(canvas, path, width, 950, false); |
| 627 | SkPath pathPts; |
| 628 | pathPts.moveTo(fPts[10]); |
| 629 | pathPts.lineTo(fPts[11]); |
| 630 | pathPts.lineTo(fPts[12]); |
| 631 | draw_points(canvas, pathPts, SK_ColorDKGRAY, true); |
| 632 | } |
| 633 | |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 634 | if (fRRectButton.fEnabled) { |
| 635 | SkScalar rad = 32; |
| 636 | SkRect r; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 637 | r.set(&fPts[13], 2); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 638 | path.reset(); |
| 639 | SkRRect rr; |
| 640 | rr.setRectXY(r, rad, rad); |
| 641 | path.addRRect(rr); |
| 642 | setForGeometry(); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 643 | draw_stroke(canvas, path, width, 950, false); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 644 | |
| 645 | path.reset(); |
| 646 | SkRRect rr2; |
| 647 | rr.inset(width/2, width/2, &rr2); |
| 648 | path.addRRect(rr2, SkPath::kCCW_Direction); |
| 649 | rr.inset(-width/2, -width/2, &rr2); |
| 650 | path.addRRect(rr2, SkPath::kCW_Direction); |
| 651 | SkPaint paint; |
| 652 | paint.setAntiAlias(true); |
| 653 | paint.setColor(0x40FF8844); |
| 654 | canvas->drawPath(path, paint); |
| 655 | } |
| 656 | |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 657 | if (fCircleButton.fEnabled) { |
| 658 | path.reset(); |
| 659 | SkRect r; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 660 | r.set(&fPts[15], 2); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 661 | path.addOval(r); |
| 662 | setForGeometry(); |
| 663 | if (fCircleButton.fFill) { |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 664 | if (fArcButton.fEnabled) { |
| 665 | SkPoint center; |
| 666 | if (arcCenter(¢er)) { |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 667 | r.set(center.fX - fRadius, center.fY - fRadius, center.fX + fRadius, |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 668 | center.fY + fRadius); |
| 669 | } |
| 670 | } |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 671 | draw_fill(canvas, r, width); |
| 672 | } else { |
| 673 | draw_stroke(canvas, path, width, 950, false); |
| 674 | } |
| 675 | } |
| 676 | |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 677 | if (fTextButton.fEnabled) { |
| 678 | path.reset(); |
| 679 | SkPaint paint; |
| 680 | paint.setAntiAlias(true); |
| 681 | paint.setTextSize(fTextSize); |
| 682 | paint.getTextPath(fText.c_str(), fText.size(), 0, fTextSize, &path); |
| 683 | setForText(); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 684 | draw_stroke(canvas, path, width * fWidthScale / fTextSize, fTextSize, true); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 685 | } |
| 686 | |
| 687 | if (fAnimate) { |
| 688 | fWidth += fDWidth; |
| 689 | if (fDWidth > 0 && fWidth > kWidthMax) { |
| 690 | fDWidth = -fDWidth; |
| 691 | } else if (fDWidth < 0 && fWidth < kWidthMin) { |
| 692 | fDWidth = -fDWidth; |
| 693 | } |
| 694 | } |
| 695 | setAsNeeded(); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 696 | if (fConicButton.fEnabled) { |
| 697 | draw_control(canvas, fWeightControl, fWeight, 0, 5, "weight"); |
| 698 | } |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 699 | if (fArcButton.fEnabled) { |
| 700 | draw_control(canvas, fRadiusControl, fRadius, 0, 500, "radius"); |
| 701 | } |
caryclark | a76b7a3b | 2015-05-22 06:26:52 -0700 | [diff] [blame] | 702 | #ifdef SK_DEBUG |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 703 | draw_control(canvas, fErrorControl, gDebugStrokerError, kStrokerErrorMin, kStrokerErrorMax, |
| 704 | "error"); |
| 705 | #endif |
| 706 | draw_control(canvas, fWidthControl, fWidth * fWidthScale, kWidthMin * fWidthScale, |
| 707 | kWidthMax * fWidthScale, "width"); |
| 708 | draw_button(canvas, fQuadButton); |
| 709 | draw_button(canvas, fCubicButton); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 710 | draw_button(canvas, fConicButton); |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 711 | draw_button(canvas, fArcButton); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 712 | draw_button(canvas, fRRectButton); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 713 | draw_button(canvas, fCircleButton); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 714 | draw_button(canvas, fTextButton); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 715 | } |
| 716 | |
| 717 | class MyClick : public Click { |
| 718 | public: |
| 719 | int fIndex; |
Ben Wagner | b2c4ea6 | 2018-08-08 11:36:17 -0400 | [diff] [blame] | 720 | MyClick(Sample* target, int index) : Click(target), fIndex(index) {} |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 721 | }; |
| 722 | |
Ben Wagner | b2c4ea6 | 2018-08-08 11:36:17 -0400 | [diff] [blame] | 723 | virtual Sample::Click* onFindClickHandler(SkScalar x, SkScalar y, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 724 | unsigned modi) override { |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 725 | for (size_t i = 0; i < SK_ARRAY_COUNT(fPts); ++i) { |
| 726 | if (hittest(fPts[i], x, y)) { |
| 727 | return new MyClick(this, (int)i); |
| 728 | } |
| 729 | } |
| 730 | const SkRect& rectPt = SkRect::MakeXYWH(x, y, 1, 1); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 731 | if (fWeightControl.contains(rectPt)) { |
| 732 | return new MyClick(this, (int) SK_ARRAY_COUNT(fPts) + 1); |
| 733 | } |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 734 | if (fRadiusControl.contains(rectPt)) { |
| 735 | return new MyClick(this, (int) SK_ARRAY_COUNT(fPts) + 2); |
| 736 | } |
caryclark | a76b7a3b | 2015-05-22 06:26:52 -0700 | [diff] [blame] | 737 | #ifdef SK_DEBUG |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 738 | if (fErrorControl.contains(rectPt)) { |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 739 | return new MyClick(this, (int) SK_ARRAY_COUNT(fPts) + 3); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 740 | } |
| 741 | #endif |
| 742 | if (fWidthControl.contains(rectPt)) { |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 743 | return new MyClick(this, (int) SK_ARRAY_COUNT(fPts) + 4); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 744 | } |
| 745 | if (fCubicButton.fBounds.contains(rectPt)) { |
| 746 | fCubicButton.fEnabled ^= true; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 747 | return new MyClick(this, (int) SK_ARRAY_COUNT(fPts) + 5); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 748 | } |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 749 | if (fConicButton.fBounds.contains(rectPt)) { |
| 750 | fConicButton.fEnabled ^= true; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 751 | return new MyClick(this, (int) SK_ARRAY_COUNT(fPts) + 6); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 752 | } |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 753 | if (fQuadButton.fBounds.contains(rectPt)) { |
| 754 | fQuadButton.fEnabled ^= true; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 755 | return new MyClick(this, (int) SK_ARRAY_COUNT(fPts) + 7); |
| 756 | } |
| 757 | if (fArcButton.fBounds.contains(rectPt)) { |
| 758 | fArcButton.fEnabled ^= true; |
| 759 | return new MyClick(this, (int) SK_ARRAY_COUNT(fPts) + 8); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 760 | } |
| 761 | if (fRRectButton.fBounds.contains(rectPt)) { |
| 762 | fRRectButton.fEnabled ^= true; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 763 | return new MyClick(this, (int) SK_ARRAY_COUNT(fPts) + 9); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 764 | } |
| 765 | if (fCircleButton.fBounds.contains(rectPt)) { |
| 766 | bool wasEnabled = fCircleButton.fEnabled; |
| 767 | fCircleButton.fEnabled = !fCircleButton.fFill; |
| 768 | fCircleButton.fFill = wasEnabled && !fCircleButton.fFill; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 769 | return new MyClick(this, (int) SK_ARRAY_COUNT(fPts) + 10); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 770 | } |
| 771 | if (fTextButton.fBounds.contains(rectPt)) { |
| 772 | fTextButton.fEnabled ^= true; |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 773 | return new MyClick(this, (int) SK_ARRAY_COUNT(fPts) + 11); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 774 | } |
| 775 | return this->INHERITED::onFindClickHandler(x, y, modi); |
| 776 | } |
| 777 | |
| 778 | static SkScalar MapScreenYtoValue(int y, const SkRect& control, SkScalar min, |
| 779 | SkScalar max) { |
| 780 | return (SkIntToScalar(y) - control.fTop) / control.height() * (max - min) + min; |
| 781 | } |
| 782 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 783 | bool onClick(Click* click) override { |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 784 | int index = ((MyClick*)click)->fIndex; |
| 785 | if (index < (int) SK_ARRAY_COUNT(fPts)) { |
| 786 | fPts[index].offset(SkIntToScalar(click->fICurr.fX - click->fIPrev.fX), |
| 787 | SkIntToScalar(click->fICurr.fY - click->fIPrev.fY)); |
caryclark | 04e4d08 | 2015-02-20 06:33:57 -0800 | [diff] [blame] | 788 | } else if (index == (int) SK_ARRAY_COUNT(fPts) + 1) { |
| 789 | fWeight = MapScreenYtoValue(click->fICurr.fY, fWeightControl, 0, 5); |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 790 | } else if (index == (int) SK_ARRAY_COUNT(fPts) + 2) { |
| 791 | fRadius = MapScreenYtoValue(click->fICurr.fY, fRadiusControl, 0, 500); |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 792 | } |
caryclark | a76b7a3b | 2015-05-22 06:26:52 -0700 | [diff] [blame] | 793 | #ifdef SK_DEBUG |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 794 | else if (index == (int) SK_ARRAY_COUNT(fPts) + 3) { |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 795 | gDebugStrokerError = SkTMax(FLT_EPSILON, MapScreenYtoValue(click->fICurr.fY, |
| 796 | fErrorControl, kStrokerErrorMin, kStrokerErrorMax)); |
| 797 | gDebugStrokerErrorSet = true; |
| 798 | } |
| 799 | #endif |
caryclark | 88651ae | 2016-01-20 11:55:11 -0800 | [diff] [blame] | 800 | else if (index == (int) SK_ARRAY_COUNT(fPts) + 4) { |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 801 | fWidth = SkTMax(FLT_EPSILON, MapScreenYtoValue(click->fICurr.fY, fWidthControl, |
| 802 | kWidthMin, kWidthMax)); |
| 803 | fAnimate = fWidth <= kWidthMin; |
| 804 | } |
| 805 | return true; |
| 806 | } |
| 807 | |
| 808 | private: |
Ben Wagner | b2c4ea6 | 2018-08-08 11:36:17 -0400 | [diff] [blame] | 809 | typedef Sample INHERITED; |
caryclark | 88c748a | 2015-02-18 10:56:00 -0800 | [diff] [blame] | 810 | }; |
| 811 | |
| 812 | /////////////////////////////////////////////////////////////////////////////// |
| 813 | |
Ben Wagner | b2c4ea6 | 2018-08-08 11:36:17 -0400 | [diff] [blame] | 814 | DEF_SAMPLE( return new QuadStrokerView(); ) |