1
2 /*
3 * Copyright 2011 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 "SkBlurMask.h"
10 #include "SkBlurMaskFilter.h"
11 #include "SkCanvas.h"
12 #include "SkColorMatrixFilter.h"
13 #include "SkDiscretePathEffect.h"
14 #include "SkGradientShader.h"
15 #include "SkPaint.h"
16 #include "SkView.h"
17
18
19 //#define COLOR 0xFFFF8844
20 #define COLOR 0xFF888888
21
paint_proc0(SkPaint *)22 static void paint_proc0(SkPaint*) {
23 }
24
paint_proc1(SkPaint * paint)25 static void paint_proc1(SkPaint* paint) {
26 paint->setMaskFilter(SkBlurMaskFilter::Create(
27 kNormal_SkBlurStyle,
28 SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(2))))->unref();
29 }
30
paint_proc2(SkPaint * paint)31 static void paint_proc2(SkPaint* paint) {
32 SkScalar dir[3] = { 1, 1, 1};
33 paint->setMaskFilter(
34 SkBlurMaskFilter::CreateEmboss(SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(1)),
35 dir,
36 0.1f,
37 0.05f))->unref();
38 }
39
paint_proc3(SkPaint * paint)40 static void paint_proc3(SkPaint* paint) {
41 SkColor colors[] = { SK_ColorRED, COLOR, SK_ColorBLUE };
42 SkPoint pts[] = { { 3, 0 }, { 7, 5 } };
43 paint->setShader(SkGradientShader::CreateLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors),
44 SkShader::kMirror_TileMode))->unref();
45 }
46
paint_proc5(SkPaint * paint)47 static void paint_proc5(SkPaint* paint) {
48 paint_proc3(paint);
49 paint_proc2(paint);
50 }
51
52 typedef void (*PaintProc)(SkPaint*);
53 const PaintProc gPaintProcs[] = {
54 paint_proc0,
55 paint_proc1,
56 paint_proc2,
57 paint_proc3,
58 paint_proc5,
59 };
60
61 ///////////////////////////////////////////////////////////////////////////////
62
63 class EffectsView : public SampleView {
64 public:
65 SkPath fPath;
66 SkPaint fPaint[SK_ARRAY_COUNT(gPaintProcs)];
67
EffectsView()68 EffectsView() {
69 size_t i;
70 const float pts[] = {
71 0, 0,
72 10, 0,
73 10, 5,
74 20, -5,
75 10, -15,
76 10, -10,
77 0, -10
78 };
79 fPath.moveTo(pts[0], pts[1]);
80 for (i = 2; i < SK_ARRAY_COUNT(pts); i += 2) {
81 fPath.lineTo(pts[i], pts[i+1]);
82 }
83
84 for (i = 0; i < SK_ARRAY_COUNT(gPaintProcs); i++) {
85 fPaint[i].setAntiAlias(true);
86 fPaint[i].setColor(COLOR);
87 gPaintProcs[i](&fPaint[i]);
88 }
89
90 SkColorMatrix cm;
91 cm.setRotate(SkColorMatrix::kG_Axis, 180);
92 cm.setIdentity();
93
94 this->setBGColor(0xFFDDDDDD);
95 }
96
97 protected:
98 // overrides from SkEventSink
onQuery(SkEvent * evt)99 virtual bool onQuery(SkEvent* evt) {
100 if (SampleCode::TitleQ(*evt)) {
101 SampleCode::TitleR(evt, "Effects");
102 return true;
103 }
104 return this->INHERITED::onQuery(evt);
105 }
106
onDrawContent(SkCanvas * canvas)107 virtual void onDrawContent(SkCanvas* canvas) {
108 canvas->scale(3, 3);
109 canvas->translate(10, 30);
110 for (size_t i = 0; i < SK_ARRAY_COUNT(fPaint); i++) {
111 canvas->drawPath(fPath, fPaint[i]);
112 canvas->translate(32, 0);
113 }
114 }
115
116 private:
117 typedef SampleView INHERITED;
118 };
119
120 ///////////////////////////////////////////////////////////////////////////////
121
MyFactory()122 static SkView* MyFactory() { return new EffectsView; }
123 static SkViewRegister reg(MyFactory);
124