1
2 /*
3 * Copyright 2012 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8 #include "SampleCode.h"
9 #include "SkBlurMaskFilter.h"
10 #include "SkColorPriv.h"
11 #include "SkCanvas.h"
12 #include "SkRandom.h"
13
14 class AnimBlurView : public SampleView {
15 public:
AnimBlurView()16 AnimBlurView() {
17 }
18
19 protected:
20 // overrides from SkEventSink
onQuery(SkEvent * evt)21 virtual bool onQuery(SkEvent* evt) {
22 if (SampleCode::TitleQ(*evt)) {
23 SampleCode::TitleR(evt, "AnimBlur");
24 return true;
25 }
26 return this->INHERITED::onQuery(evt);
27 }
28
onDrawContent(SkCanvas * canvas)29 virtual void onDrawContent(SkCanvas* canvas) {
30
31 SkScalar blurSigma = SampleCode::GetAnimSinScalar(100 * SK_Scalar1,
32 4 * SK_Scalar1,
33 5 * SK_Scalar1);
34
35 SkScalar circleRadius = 3 * SK_Scalar1 +
36 SampleCode::GetAnimSinScalar(150 * SK_Scalar1,
37 25 * SK_Scalar1,
38 3 * SK_Scalar1);
39
40 static const SkBlurStyle gStyles[] = {
41 kNormal_SkBlurStyle,
42 kInner_SkBlurStyle,
43 kSolid_SkBlurStyle,
44 kOuter_SkBlurStyle,
45 };
46 SkRandom random;
47
48 for (size_t i = 0; i < SK_ARRAY_COUNT(gStyles); ++i) {
49 SkMaskFilter* mf = SkBlurMaskFilter::Create(
50 gStyles[i],
51 blurSigma,
52 SkBlurMaskFilter::kHighQuality_BlurFlag);
53 SkPaint paint;
54 SkSafeUnref(paint.setMaskFilter(mf));
55 paint.setColor(random.nextU() | 0xff000000);
56 canvas->drawCircle(200 * SK_Scalar1 + 400 * (i % 2) * SK_Scalar1,
57 200 * SK_Scalar1 + i / 2 * 400 * SK_Scalar1,
58 circleRadius, paint);
59 }
60 this->inval(NULL);
61 }
62
63 private:
64 typedef SkView INHERITED;
65 };
66
67 //////////////////////////////////////////////////////////////////////////////
68
MyFactory()69 static SkView* MyFactory() { return new AnimBlurView; }
70 static SkViewRegister reg(MyFactory);
71