Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(227)

Side by Side Diff: samplecode/SampleBevel.cpp

Issue 2246243002: Interactive Bevel Sample App (Closed) Base URL: https://skia.googlesource.com/skia@master
Patch Set: Addressed patch 2 comments Created 4 years, 4 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View unified diff | Download patch
« no previous file with comments | « gyp/samples.gypi ('k') | no next file » | no next file with comments »
Toggle Intra-line Diffs ('i') | Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
OLDNEW
(Empty)
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
robertphillips 2016/08/17 18:11:43 fuse these two lines with MakeLTRB ? & for other
dvonbeck 2016/08/17 18:28:40 I feel like it is easier to read if I put it in 2
egdaniel 2016/08/17 18:34:12 There is a MakeXYWH which I think is the best opti
dvonbeck 2016/08/17 18:49:53 Done.
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 // Draw controls
102 SkPaint ctrlRectPaint;
103 ctrlRectPaint.setColor(0xFFF3F3F3);
104 canvas->drawRect(fWidthCtrlRect, ctrlRectPaint);
105 canvas->drawRect(fHeightCtrlRect, ctrlRectPaint);
106 canvas->drawRect(fTypeCtrlRect, ctrlRectPaint);
107
108 SkPaint ctrlRectRangePaint;
109 ctrlRectRangePaint.setColor(0xFFFFFFFF);
110 ctrlRectRangePaint.setStyle(SkPaint::kStroke_Style);
111 ctrlRectRangePaint.setStrokeWidth(2.0f);
112
113 for (size_t i = 0; i < kNumControls; i++) {
114 canvas->drawRect(fCtrlRangeRects[i], ctrlRectRangePaint);
115 }
116
117 // Draw labels
118 constexpr SkScalar kTextSize = 12.0f;
119 SkString widthLabel, heightLabel, typeLabel;
120 SkPaint labelPaint;
121 labelPaint.setTypeface(sk_tool_utils::create_portable_typeface("sans-ser if",
122 SkFontSty le()));
123 labelPaint.setAntiAlias(true);
124 labelPaint.setColor(0xFFFFFFFF);
125 labelPaint.setTextSize(kTextSize);
126
127 widthLabel.appendf("BevelWidth: %f", fBevelWidth);
128 heightLabel.appendf("BevelHeight: %f", fBevelHeight);
129 typeLabel.append("BevelType: ");
130
131 switch (fBevelType) {
132 case SkNormalSource::BevelType::kLinear:
133 typeLabel.append("Linear");
134 break;
135 case SkNormalSource::BevelType::kRoundedIn:
136 typeLabel.append("RoundedIn");
137 break;
138 case SkNormalSource::BevelType::kRoundedOut:
139 typeLabel.append("RoundedOut");
140 break;
141 }
142
143 canvas->drawText(widthLabel.c_str(), widthLabel.size(), 0,
144 fWidthCtrlRect.fTop - kTextSize/2.0f, labelPaint);
145 canvas->drawText(heightLabel.c_str(), heightLabel.size(), 0,
146 fHeightCtrlRect.fTop - kTextSize/2.0f, labelPaint);
147 canvas->drawText(typeLabel.c_str(), typeLabel.size(), 0,
148 fTypeCtrlRect.fTop - kTextSize/2.0f, labelPaint);
149
150 // Draw shapes
151 SkScalar xPos = kCtrlRange + 25;
152 SkScalar yPos = fShapeBounds.height();
153 for (Shape shape : { kCircle_Shape, kRect_Shape }) {
154 canvas->save();
155 canvas->translate(xPos, yPos);
156 this->drawShape(shape, canvas);
157 canvas->restore();
158
159 xPos += 1.2f * fShapeBounds.width();
160 }
161 }
162
163 SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned modi) ove rride {
164 return new SkView::Click(this);
165 }
166
167 bool onClick(Click *click) override {
168 SkScalar x = click->fCurr.fX;
169 SkScalar y = click->fCurr.fY;
170
171 SkScalar dx = x - click->fPrev.fX;
172 SkScalar dy = y - click->fPrev.fY;
173
174 // Control deselection
175 if (Click::State::kUp_State == click->fState) {
176 fSelectedCtrlRect = nullptr;
177 return true;
178 }
179
180 // Control selection
181 if (nullptr == fSelectedCtrlRect && Click::State::kDown_State == click-> fState) {
182 if (fWidthCtrlRect.contains(SkRect::MakeXYWH(x, y, 1, 1))) {
183 fSelectedCtrlRect = &fWidthCtrlRect;
184 } else if (fHeightCtrlRect.contains(SkRect::MakeXYWH(x, y, 1, 1))) {
185 fSelectedCtrlRect = &fHeightCtrlRect;
186 } else if (fTypeCtrlRect.contains(SkRect::MakeXYWH(x, y, 1, 1))) {
187 fSelectedCtrlRect = &fTypeCtrlRect;
188 }
189 }
190
191 // Control modification
192 if (nullptr != fSelectedCtrlRect) {
193 fSelectedCtrlRect->offsetTo(SkScalarPin(x, 0.0f, kCtrlRange), fSelec tedCtrlRect->fTop);
194
195 fBevelHeight = (fHeightCtrlRect.fLeft / kCtrlRange) * kBevelHeightMa x;
196 fBevelWidth = (fWidthCtrlRect.fLeft / kCtrlRange) * kBevelWidthMax;
197 fBevelType = (SkNormalSource::BevelType)SkTMin(
198 SkScalarFloorToInt(3.0f * fTypeCtrlRect.fLeft / kCtrlRange),
199 2);
200
201 // Snap type controls to 3 positions
202 fTypeCtrlRect.offsetTo(kCtrlRange * ( ((int)fBevelType)/3.0f + 1.0f/ 6.0f ),
203 fTypeCtrlRect.fTop);
204
205 // Ensuring width is non-zero
206 fBevelWidth = SkMaxScalar(1.0f, fBevelWidth);
207
208 this->inval(nullptr);
209 return true;
210 }
211
212 // Moving light
213 if (nullptr == fSelectedCtrlRect) {
214 if (dx != 0 || dy != 0) {
215 float recipX = 1.0f / kAppWidth;
216 float recipY = 1.0f / kAppHeight;
217
218 if (0 == click->fModifierKeys) { // No modifier
219 fBlueLight = SkLights::Light::MakeDirectional(fBlueLight.col or(),
220 SkVector3::Make((kAppWidth/2.0f - x) * recipX * -3.0 f,
221 (kAppHeight/2.0f - y) * recipY * -3. 0f,
222 1.0f));
223 } else if (1 == click->fModifierKeys) { // Shift key
224 fRedLight = SkLights::Light::MakeDirectional(fRedLight.color (),
225 SkVector3::Make((kAppWidth/2.0f - x) * recipX * -3.0 f,
226 (kAppHeight/2.0f - y) * recipY * -3. 0f,
227 1.0f));
228 }
229
230 SkLights::Builder builder;
231 builder.add(fRedLight);
232 builder.add(fBlueLight);
233 builder.add(SkLights::Light::MakeAmbient(
234 SkColor3f::Make(0.4f, 0.4f, 0.4f)));
235 fLights = builder.finish();
236
237 this->inval(nullptr);
238 }
239 return true;
240 }
241
242 return true;
243 }
244
245 private:
246 static constexpr int kNumTestRects = 3;
247
248 static constexpr int kAppWidth = 400;
249 static constexpr int kAppHeight = 400;
250 static constexpr int kShapeBoundsSize = 120;
251
252 static constexpr int kCtrlRange = 150;
253 static constexpr int kBevelWidthMax = 50;
254 static constexpr int kBevelHeightMax = 50;
255
256 static constexpr int kSliderHeight = 20;
257 static constexpr int kSliderWidth = 10;
258
259 const SkRect fShapeBounds;
260
261 static constexpr int kNumControls = 3;
262 SkRect fCtrlRangeRects[kNumControls];
263 SkRect* fSelectedCtrlRect;
264 SkRect fWidthCtrlRect;
265 SkRect fHeightCtrlRect;
266 SkRect fTypeCtrlRect;
267
268 SkScalar fBevelWidth;
269 SkScalar fBevelHeight;
270 SkNormalSource::BevelType fBevelType;
271
272 sk_sp<SkLights> fLights;
273 SkLights::Light fRedLight;
274 SkLights::Light fBlueLight;
275
276 typedef SampleView INHERITED;
277 };
278
279 //////////////////////////////////////////////////////////////////////////////
280
281 static SkView* MyFactory() { return new BevelView; }
282 static SkViewRegister reg(MyFactory);
283
OLDNEW
« no previous file with comments | « gyp/samples.gypi ('k') | no next file » | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698