reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [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 "SampleCode.h" |
| 9 | #include "SkAnimTimer.h" |
| 10 | #include "SkDrawable.h" |
| 11 | #include "SkView.h" |
| 12 | #include "SkCanvas.h" |
| 13 | #include "SkDrawable.h" |
| 14 | #include "SkPath.h" |
| 15 | #include "SkRandom.h" |
| 16 | #include "SkRSXform.h" |
| 17 | #include "SkSurface.h" |
| 18 | #include "SkGradientShader.h" |
| 19 | |
Brian Osman | d1e67e7 | 2017-03-15 12:19:37 -0400 | [diff] [blame^] | 20 | const SkBlendMode gModes[] = { |
| 21 | SkBlendMode::kSrcOver, |
| 22 | SkBlendMode::kSrc, |
| 23 | SkBlendMode::kSrcIn, |
| 24 | SkBlendMode::kSrcOut, |
| 25 | SkBlendMode::kSrcATop, |
| 26 | SkBlendMode::kDstOver, |
| 27 | SkBlendMode::kDstIn, |
| 28 | SkBlendMode::kDstOut, |
| 29 | SkBlendMode::kDstATop, |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 30 | }; |
| 31 | const int N_Modes = SK_ARRAY_COUNT(gModes); |
| 32 | |
| 33 | class HasEventWig : public SkView { |
| 34 | public: |
| 35 | void postWidgetEvent() { |
| 36 | SkEvent evt; |
| 37 | this->onPrepareWidEvent(&evt); |
| 38 | this->postToListeners(evt, 0); |
| 39 | } |
| 40 | |
| 41 | protected: |
| 42 | virtual void onPrepareWidEvent(SkEvent*) {} |
| 43 | }; |
| 44 | |
| 45 | static SkRandom gRand; |
| 46 | |
| 47 | class PushButtonWig : public HasEventWig { |
| 48 | SkString fLabel; |
| 49 | SkColor fColor; |
| 50 | uint32_t fFast32; |
| 51 | |
| 52 | public: |
| 53 | PushButtonWig(const char label[], uint32_t fast) : fLabel(label) { |
| 54 | fColor = (gRand.nextU() & 0x7F7F7F7F) | SkColorSetARGB(0xFF, 0, 0, 0x80); |
| 55 | fFast32 = fast; |
| 56 | } |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 57 | |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 58 | protected: |
| 59 | void onPrepareWidEvent(SkEvent* evt) override { |
| 60 | evt->setType("push-button"); |
| 61 | evt->setFast32(fFast32); |
| 62 | evt->setString("label", fLabel.c_str()); |
| 63 | } |
| 64 | |
| 65 | // bool onEvent(const SkEvent&) override; |
| 66 | void onDraw(SkCanvas* canvas) override { |
| 67 | SkRect r; |
| 68 | this->getLocalBounds(&r); |
| 69 | SkPaint paint; |
| 70 | paint.setAntiAlias(true); |
| 71 | paint.setColor(fColor); |
| 72 | canvas->drawRoundRect(r, 8, 8, paint); |
| 73 | |
| 74 | paint.setColor(0xFFFFFFFF); |
| 75 | paint.setTextSize(16); |
| 76 | paint.setTextAlign(SkPaint::kCenter_Align); |
| 77 | paint.setLCDRenderText(true); |
| 78 | canvas->drawText(fLabel.c_str(), fLabel.size(), r.centerX(), r.fTop + 0.68f * r.height(), paint); |
| 79 | } |
| 80 | |
| 81 | Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned modi) override { |
| 82 | return new Click(this); |
| 83 | } |
| 84 | |
| 85 | bool onClick(Click* click) override { |
| 86 | SkRect target = SkRect::MakeXYWH(click->fCurr.x() - 1, click->fCurr.y() - 1, 3, 3); |
| 87 | SkRect r; |
| 88 | this->getLocalBounds(&r); |
| 89 | if (r.intersects(target)) { |
| 90 | fColor = SkColorSetA(fColor, 0x99); |
| 91 | } else { |
| 92 | fColor = SkColorSetA(fColor, 0xFF); |
| 93 | } |
| 94 | this->inval(nullptr); |
| 95 | |
| 96 | if (click->fState == SkView::Click::kUp_State) { |
| 97 | this->postWidgetEvent(); |
| 98 | } |
| 99 | return true; |
| 100 | } |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 101 | |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 102 | private: |
| 103 | typedef HasEventWig INHERITED; |
| 104 | }; |
| 105 | |
| 106 | |
| 107 | class ModeDrawable : public SkDrawable { |
| 108 | public: |
reed | 374772b | 2016-10-05 17:33:02 -0700 | [diff] [blame] | 109 | ModeDrawable() : fMode(SkBlendMode::kSrcOver), fLoc(SkPoint::Make(0, 0)) {} |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 110 | |
reed | 374772b | 2016-10-05 17:33:02 -0700 | [diff] [blame] | 111 | SkBlendMode fMode; |
| 112 | SkPoint fLoc; |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 113 | |
| 114 | bool hitTest(SkScalar x, SkScalar y) { |
| 115 | SkRect target = SkRect::MakeXYWH(x - fLoc.x() - 1, y - fLoc.y() - 1, 3, 3); |
| 116 | return this->getBounds().intersects(target); |
| 117 | } |
| 118 | }; |
| 119 | |
| 120 | class CircDrawable : public ModeDrawable { |
| 121 | SkPaint fPaint; |
| 122 | SkRect fBounds; |
| 123 | |
| 124 | public: |
| 125 | CircDrawable(SkScalar size, SkColor c) { |
| 126 | const SkColor colors[] = { 0, c }; |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame] | 127 | fPaint.setShader(SkGradientShader::MakeRadial(SkPoint::Make(size/2, size/2), size/2, |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 128 | colors, nullptr, 2, |
| 129 | SkShader::kClamp_TileMode)); |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 130 | fBounds = SkRect::MakeWH(size, size); |
| 131 | } |
| 132 | |
| 133 | protected: |
| 134 | SkRect onGetBounds() override { |
| 135 | return fBounds; |
| 136 | } |
| 137 | |
| 138 | void onDraw(SkCanvas* canvas) override { |
reed | 374772b | 2016-10-05 17:33:02 -0700 | [diff] [blame] | 139 | fPaint.setBlendMode(fMode); |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 140 | canvas->save(); |
| 141 | canvas->translate(fLoc.x(), fLoc.y()); |
| 142 | canvas->drawOval(fBounds, fPaint); |
| 143 | canvas->restore(); |
| 144 | } |
| 145 | }; |
| 146 | |
| 147 | class XferDemo : public SampleView { |
| 148 | enum { |
| 149 | N = 4 |
| 150 | }; |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 151 | |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 152 | SkRect fModeRect[N_Modes]; |
Hal Canary | 2db8361 | 2016-11-04 13:02:54 -0400 | [diff] [blame] | 153 | sk_sp<CircDrawable> fDrs[N]; |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 154 | CircDrawable* fSelected; |
| 155 | |
| 156 | void addButtons() { |
| 157 | SkScalar x = 10; |
| 158 | SkScalar y = 10; |
| 159 | for (int i = 0; i < N_Modes; ++i) { |
Brian Osman | d1e67e7 | 2017-03-15 12:19:37 -0400 | [diff] [blame^] | 160 | sk_sp<SkView> v(new PushButtonWig(SkBlendMode_Name(gModes[i]), (int)gModes[i])); |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 161 | v->setSize(70, 25); |
| 162 | v->setLoc(x, y); |
| 163 | v->setVisibleP(true); |
| 164 | v->setEnabledP(true); |
| 165 | v->addListenerID(this->getSinkID()); |
Hal Canary | 2db8361 | 2016-11-04 13:02:54 -0400 | [diff] [blame] | 166 | this->attachChildToFront(v.get()); |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 167 | fModeRect[i] = SkRect::MakeXYWH(x, y + 28, 70, 2); |
| 168 | x += 80; |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | public: |
| 173 | XferDemo() { |
| 174 | const SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorBLACK }; |
| 175 | for (int i = 0; i < N; ++i) { |
| 176 | fDrs[i].reset(new CircDrawable(200, colors[i])); |
| 177 | fDrs[i]->fLoc.set(100.f + i * 100, 100.f + i * 100); |
reed | 374772b | 2016-10-05 17:33:02 -0700 | [diff] [blame] | 178 | fDrs[i]->fMode = SkBlendMode::kSrcOver; |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 179 | } |
| 180 | fSelected = nullptr; |
| 181 | |
| 182 | this->addButtons(); |
| 183 | } |
| 184 | |
| 185 | protected: |
| 186 | bool onEvent(const SkEvent& evt) override { |
| 187 | if (evt.isType("push-button")) { |
| 188 | if (fSelected) { |
reed | 374772b | 2016-10-05 17:33:02 -0700 | [diff] [blame] | 189 | fSelected->fMode = (SkBlendMode)evt.getFast32(); |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 190 | this->inval(nullptr); |
| 191 | } |
| 192 | return true; |
| 193 | } |
| 194 | return this->INHERITED::onEvent(evt); |
| 195 | } |
| 196 | |
| 197 | bool onQuery(SkEvent* evt) override { |
| 198 | if (SampleCode::TitleQ(*evt)) { |
| 199 | SampleCode::TitleR(evt, "XferDemo"); |
| 200 | return true; |
| 201 | } |
| 202 | return this->INHERITED::onQuery(evt); |
| 203 | } |
| 204 | |
| 205 | void onDrawContent(SkCanvas* canvas) override { |
| 206 | SkPaint paint; |
| 207 | if (fSelected) { |
| 208 | for (int i = 0; i < N_Modes; ++i) { |
Brian Osman | d1e67e7 | 2017-03-15 12:19:37 -0400 | [diff] [blame^] | 209 | if (fSelected->fMode == gModes[i]) { |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 210 | canvas->drawRect(fModeRect[i], paint); |
| 211 | break; |
| 212 | } |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | canvas->saveLayer(nullptr, nullptr); |
| 217 | for (int i = 0; i < N; ++i) { |
| 218 | fDrs[i]->draw(canvas); |
| 219 | } |
| 220 | canvas->restore(); |
| 221 | } |
| 222 | |
| 223 | SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) override { |
| 224 | fSelected = nullptr; |
| 225 | for (int i = N - 1; i >= 0; --i) { |
| 226 | if (fDrs[i]->hitTest(x, y)) { |
Hal Canary | 2db8361 | 2016-11-04 13:02:54 -0400 | [diff] [blame] | 227 | fSelected = fDrs[i].get(); |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 228 | break; |
| 229 | } |
| 230 | } |
| 231 | this->inval(nullptr); |
| 232 | return fSelected ? new Click(this) : nullptr; |
| 233 | } |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 234 | |
reed | 1a9caff | 2015-09-02 19:05:10 -0700 | [diff] [blame] | 235 | bool onClick(Click* click) override { |
| 236 | fSelected->fLoc.fX += click->fCurr.fX - click->fPrev.fX; |
| 237 | fSelected->fLoc.fY += click->fCurr.fY - click->fPrev.fY; |
| 238 | this->inval(nullptr); |
| 239 | return true; |
| 240 | } |
| 241 | |
| 242 | private: |
| 243 | typedef SampleView INHERITED; |
| 244 | }; |
| 245 | |
| 246 | ////////////////////////////////////////////////////////////////////////////// |
| 247 | |
| 248 | DEF_SAMPLE( return new XferDemo; ) |