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1 /* | |
2 * Copyright 2016 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 "SkCanvas.h" | |
10 #include "SkLightingShader.h" | |
11 #include "SkNormalSource.h" | |
12 #include "sk_tool_utils.h" | |
13 | |
14 | |
15 class BevelView : public SampleView { | |
16 public: | |
17 BevelView() | |
18 : fShapeBounds(SkRect::MakeIWH(kShapeBoundsSize, kShapeBoundsSize)) | |
19 , fRedLight(SkLights::Light::MakeDirectional(SkColor3f::Make(0.6f, 0.45f , 0.3f), | |
20 SkVector3::Make(0.0f, -5.0f , 1.0f))) | |
21 , fBlueLight(SkLights::Light::MakeDirectional(SkColor3f::Make(0.3f, 0.45 f, 0.6f), | |
22 SkVector3::Make(0.0f, 5.0f , 1.0f))) { | |
23 this->setBGColor(0xFF666868); // Slightly colorized gray for contrast | |
24 | |
25 // Lights | |
26 SkLights::Builder builder; | |
27 builder.add(fRedLight); | |
28 builder.add(fBlueLight); | |
29 builder.add(SkLights::Light::MakeAmbient(SkColor3f::Make(0.4f, 0.4f, 0.4 f))); | |
30 fLights = builder.finish(); | |
31 | |
32 // Controls | |
33 | |
34 int currY = kSliderHeight; | |
35 | |
36 fCtrlRangeRects[0] = SkRect::MakeIWH(kCtrlRange + kSliderWidth, kSliderH eight); | |
37 fCtrlRangeRects[0].offset(0, SkIntToScalar(currY)); | |
38 fWidthCtrlRect = SkRect::MakeIWH(kSliderWidth, kSliderHeight); | |
39 fWidthCtrlRect.offset(0.3*kCtrlRange, SkIntToScalar(currY)); | |
40 fBevelWidth = 0.3*kBevelWidthMax; | |
41 currY += 2 * kSliderHeight; | |
42 | |
43 fCtrlRangeRects[1] = SkRect::MakeIWH(kCtrlRange + kSliderWidth, kSliderH eight); | |
44 fCtrlRangeRects[1].offset(0, SkIntToScalar(currY)); | |
45 fHeightCtrlRect = SkRect::MakeIWH(kSliderWidth, kSliderHeight); | |
46 fHeightCtrlRect.offset(0.3*kCtrlRange, SkIntToScalar(currY)); | |
47 fBevelHeight = 0.3*kBevelHeightMax; | |
48 currY += 2 * kSliderHeight; | |
49 | |
50 fCtrlRangeRects[2] = SkRect::MakeIWH(kCtrlRange + kSliderWidth, kSliderH eight); | |
51 fCtrlRangeRects[2].offset(0, SkIntToScalar(currY)); | |
52 fTypeCtrlRect = SkRect::MakeIWH(kSliderWidth, kSliderHeight); | |
53 fTypeCtrlRect.offset((1.0f/6.0f)*kCtrlRange, SkIntToScalar(currY)); | |
54 fBevelType = (SkNormalSource::BevelType) 0; | |
55 currY += 2 * kSliderHeight; | |
56 | |
57 fSelectedCtrlRect = nullptr; | |
58 } | |
59 | |
60 protected: | |
61 bool onQuery(SkEvent *evt) override { | |
62 if (SampleCode::TitleQ(*evt)) { | |
63 SampleCode::TitleR(evt, "bevel"); | |
64 return true; | |
65 } | |
66 | |
67 return this->INHERITED::onQuery(evt); | |
68 } | |
69 | |
70 enum Shape { | |
71 kCircle_Shape, | |
72 kRect_Shape, | |
73 }; | |
74 void drawShape(enum Shape shape, SkCanvas* canvas) { | |
75 canvas->save(); | |
76 | |
77 SkPaint paint; | |
78 | |
79 sk_sp<SkNormalSource> normalSource = SkNormalSource::MakeBevel(fBevelTyp e, fBevelWidth, | |
80 fBevelHei ght); | |
81 | |
82 paint.setShader(SkLightingShader::Make(nullptr, std::move(normalSource), fLights)); | |
83 paint.setAntiAlias(true); | |
84 paint.setColor(0xFFDDDDDD); | |
85 switch (shape) { | |
86 case kCircle_Shape: | |
87 canvas->drawCircle(fShapeBounds.centerX(), fShapeBounds.centerY( ), | |
88 fShapeBounds.width()/2.0f, paint); | |
89 break; | |
90 case kRect_Shape: | |
91 canvas->drawRect(fShapeBounds, paint); | |
92 break; | |
93 default: | |
94 SkDEBUGFAIL("Invalid shape enum for drawShape"); | |
95 } | |
96 | |
97 canvas->restore(); | |
98 } | |
99 | |
100 void onDrawContent(SkCanvas *canvas) override { | |
101 | |
102 canvas->save(); | |
103 canvas->resetMatrix(); // Force static controls and labels | |
104 | |
105 // Draw controls | |
106 | |
107 SkPaint ctrlRectPaint; | |
108 ctrlRectPaint.setColor(0xFFF3F3F3); | |
109 canvas->drawRect(fWidthCtrlRect, ctrlRectPaint); | |
110 canvas->drawRect(fHeightCtrlRect, ctrlRectPaint); | |
111 canvas->drawRect(fTypeCtrlRect, ctrlRectPaint); | |
112 | |
113 SkPaint ctrlRectRangePaint; | |
114 ctrlRectRangePaint.setColor(0xFFFFFFFF); | |
115 ctrlRectRangePaint.setStyle(SkPaint::kStroke_Style); | |
116 ctrlRectRangePaint.setStrokeWidth(2.0f); | |
117 | |
118 for (size_t i = 0; i < kNumControls; i++) { | |
119 canvas->drawRect(fCtrlRangeRects[i], ctrlRectRangePaint); | |
120 } | |
121 | |
122 // Draw labels | |
123 constexpr SkScalar kTextSize = 12.0f; | |
124 SkString widthLabel, heightLabel, typeLabel; | |
125 SkPaint labelPaint; | |
126 labelPaint.setTypeface(sk_tool_utils::create_portable_typeface("sans-ser if", | |
127 SkFontSty le())); | |
128 labelPaint.setAntiAlias(true); | |
129 labelPaint.setColor(0xFFFFFFFF); | |
130 labelPaint.setTextSize(kTextSize); | |
131 | |
132 widthLabel.appendf("BevelWidth: %f", fBevelWidth); | |
133 heightLabel.appendf("BevelHeight: %f", fBevelHeight); | |
134 typeLabel.append("BevelType: "); | |
135 | |
136 switch (fBevelType) { | |
137 case SkNormalSource::BevelType::kLinear: | |
138 typeLabel.append("Linear"); | |
139 break; | |
140 case SkNormalSource::BevelType::kRoundedIn: | |
141 typeLabel.append("RoundedIn"); | |
142 break; | |
143 case SkNormalSource::BevelType::kRoundedOut: | |
144 typeLabel.append("RoundedOut"); | |
145 break; | |
146 } | |
147 | |
148 canvas->drawText(widthLabel.c_str(), widthLabel.size(), 0, | |
149 fWidthCtrlRect.fTop - kTextSize/2.0f, labelPaint); | |
150 canvas->drawText(heightLabel.c_str(), heightLabel.size(), 0, | |
151 fHeightCtrlRect.fTop - kTextSize/2.0f, labelPaint); | |
152 canvas->drawText(typeLabel.c_str(), typeLabel.size(), 0, | |
153 fTypeCtrlRect.fTop - kTextSize/2.0f, labelPaint); | |
154 | |
155 canvas->restore(); // Return to modified matrix when drawing shapes | |
156 | |
157 // Draw shapes | |
158 SkScalar xPos = kCtrlRange + 25; | |
159 SkScalar yPos = fShapeBounds.height(); | |
160 for (Shape shape : { kCircle_Shape, kRect_Shape }) { | |
161 canvas->save(); | |
162 canvas->translate(xPos, yPos); | |
163 this->drawShape(shape, canvas); | |
164 canvas->restore(); | |
165 | |
166 xPos += 1.2f * fShapeBounds.width(); | |
167 } | |
168 } | |
169 | |
170 SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned modi) ove rride { | |
171 return new SkView::Click(this); | |
172 } | |
173 | |
174 bool onClick(Click *click) override { | |
175 SkScalar x = click->fCurr.fX; | |
176 SkScalar y = click->fCurr.fY; | |
177 | |
178 SkScalar dx = x - click->fPrev.fX; | |
179 SkScalar dy = y - click->fPrev.fY; | |
180 | |
181 // Control deselection | |
182 if (Click::State::kUp_State == click->fState) { | |
183 fSelectedCtrlRect = nullptr; | |
184 return true; | |
185 } | |
186 | |
187 // Control selection | |
188 if (nullptr == fSelectedCtrlRect && Click::State::kDown_State == click-> fState) { | |
189 if (fWidthCtrlRect.contains(SkRect::MakeXYWH(x, y, 1, 1))) { | |
190 fSelectedCtrlRect = &fWidthCtrlRect; | |
191 } else if (fHeightCtrlRect.contains(SkRect::MakeXYWH(x, y, 1, 1))) { | |
192 fSelectedCtrlRect = &fHeightCtrlRect; | |
193 } else if (fTypeCtrlRect.contains(SkRect::MakeXYWH(x, y, 1, 1))) { | |
194 fSelectedCtrlRect = &fTypeCtrlRect; | |
195 } | |
196 } | |
197 | |
198 // Control modification | |
199 if (nullptr != fSelectedCtrlRect) { | |
200 fSelectedCtrlRect->offsetTo(SkScalarPin(x, 0.0f, kCtrlRange), fSelec tedCtrlRect->fTop); | |
201 | |
202 fBevelHeight = (fHeightCtrlRect.fLeft / kCtrlRange) * kBevelHeightMa x; | |
egdaniel
2016/08/17 17:53:18
Can height get negative? If not it should be able
dvonbeck
2016/08/17 17:56:29
I tried it but all it does is look like the lights
dvonbeck
2016/08/17 18:28:40
Done.
| |
203 fBevelWidth = (fWidthCtrlRect.fLeft / kCtrlRange) * kBevelWidthMax; | |
204 fBevelType = (SkNormalSource::BevelType)SkTMin( | |
205 SkScalarFloorToInt(3.0f * fTypeCtrlRect.fLeft / kCtrlRange), | |
206 2); | |
207 | |
208 // Snap type controls to 3 positions | |
209 fTypeCtrlRect.offsetTo(kCtrlRange * ( ((int)fBevelType)/3.0f + 1.0f/ 6.0f ), | |
210 fTypeCtrlRect.fTop); | |
211 | |
212 // Ensuring width is non-zero | |
213 fBevelWidth = SkMaxScalar(1.0f, fBevelWidth); | |
214 | |
215 this->inval(nullptr); | |
216 return true; | |
217 } | |
218 | |
219 // Moving light | |
220 if (nullptr == fSelectedCtrlRect) { | |
221 if (dx != 0 || dy != 0) { | |
222 float recipX = 1.0f / kAppWidth; | |
223 float recipY = 1.0f / kAppHeight; | |
224 | |
225 if (0 == click->fModifierKeys) { // No modifier | |
226 fBlueLight = SkLights::Light::MakeDirectional(fBlueLight.col or(), | |
227 SkVector3::Make((kAppWidth/2.0f - x) * recipX * -3.0 f, | |
228 (kAppHeight/2.0f - y) * recipY * -3. 0f, | |
229 1.0f)); | |
230 } else if (1 == click->fModifierKeys) { // Shift key | |
231 fRedLight = SkLights::Light::MakeDirectional(fRedLight.color (), | |
232 SkVector3::Make((kAppWidth/2.0f - x) * recipX * -3.0 f, | |
233 (kAppHeight/2.0f - y) * recipY * -3. 0f, | |
234 1.0f)); | |
235 } | |
236 | |
237 SkLights::Builder builder; | |
238 builder.add(fRedLight); | |
239 builder.add(fBlueLight); | |
240 builder.add(SkLights::Light::MakeAmbient( | |
241 SkColor3f::Make(0.4f, 0.4f, 0.4f))); | |
242 fLights = builder.finish(); | |
243 | |
244 this->inval(nullptr); | |
245 } | |
246 return true; | |
247 } | |
248 | |
249 return true; | |
250 } | |
251 | |
252 private: | |
253 static constexpr int kNumTestRects = 3; | |
254 | |
255 static constexpr int kAppWidth = 400; | |
256 static constexpr int kAppHeight = 400; | |
257 static constexpr int kShapeBoundsSize = 120; | |
258 | |
259 static constexpr int kCtrlRange = 150; | |
260 static constexpr int kBevelWidthMax = 100; | |
261 static constexpr int kBevelHeightMax = 50; | |
262 | |
263 static constexpr int kSliderHeight = 20; | |
264 static constexpr int kSliderWidth = 10; | |
265 | |
266 const SkRect fShapeBounds; | |
267 | |
268 static constexpr int kNumControls = 3; | |
269 SkRect fCtrlRangeRects[kNumControls]; | |
270 SkRect* fSelectedCtrlRect; | |
271 SkRect fWidthCtrlRect; | |
272 SkRect fHeightCtrlRect; | |
273 SkRect fTypeCtrlRect; | |
274 | |
275 SkScalar fBevelWidth; | |
276 SkScalar fBevelHeight; | |
277 SkNormalSource::BevelType fBevelType; | |
278 | |
279 sk_sp<SkLights> fLights; | |
280 SkLights::Light fRedLight; | |
281 SkLights::Light fBlueLight; | |
282 | |
283 typedef SampleView INHERITED; | |
284 }; | |
285 | |
286 ////////////////////////////////////////////////////////////////////////////// | |
287 | |
288 static SkView* MyFactory() { return new BevelView; } | |
289 static SkViewRegister reg(MyFactory); | |
290 | |
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