1 /*
2 * Copyright 2011 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 #include "SampleCode.h"
8 #include "SkBlurMask.h"
9 #include "SkBlurMaskFilter.h"
10 #include "SkCanvas.h"
11 #include "SkColorMatrixFilter.h"
12 #include "SkDiscretePathEffect.h"
13 #include "SkEmbossMaskFilter.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::Make(
27 kNormal_SkBlurStyle,
28 SkBlurMask::ConvertRadiusToSigma(2)));
29 }
30
paint_proc2(SkPaint * paint)31 static void paint_proc2(SkPaint* paint) {
32 paint->setMaskFilter(SkEmbossMaskFilter::Make(
33 SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(1)),
34 { { SK_Scalar1, SK_Scalar1, SK_Scalar1 }, 0, 64, 16 }));
35 }
36
paint_proc3(SkPaint * paint)37 static void paint_proc3(SkPaint* paint) {
38 SkColor colors[] = { SK_ColorRED, COLOR, SK_ColorBLUE };
39 SkPoint pts[] = { { 3, 0 }, { 7, 5 } };
40 paint->setShader(SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors),
41 SkShader::kMirror_TileMode));
42 }
43
paint_proc5(SkPaint * paint)44 static void paint_proc5(SkPaint* paint) {
45 paint_proc3(paint);
46 paint_proc2(paint);
47 }
48
49 typedef void (*PaintProc)(SkPaint*);
50 const PaintProc gPaintProcs[] = {
51 paint_proc0,
52 paint_proc1,
53 paint_proc2,
54 paint_proc3,
55 paint_proc5,
56 };
57
58 ///////////////////////////////////////////////////////////////////////////////
59
60 class EffectsView : public SampleView {
61 public:
62 SkPath fPath;
63 SkPaint fPaint[SK_ARRAY_COUNT(gPaintProcs)];
64
EffectsView()65 EffectsView() {
66 size_t i;
67 const float pts[] = {
68 0, 0,
69 10, 0,
70 10, 5,
71 20, -5,
72 10, -15,
73 10, -10,
74 0, -10
75 };
76 fPath.moveTo(pts[0], pts[1]);
77 for (i = 2; i < SK_ARRAY_COUNT(pts); i += 2) {
78 fPath.lineTo(pts[i], pts[i+1]);
79 }
80
81 for (i = 0; i < SK_ARRAY_COUNT(gPaintProcs); i++) {
82 fPaint[i].setAntiAlias(true);
83 fPaint[i].setColor(COLOR);
84 gPaintProcs[i](&fPaint[i]);
85 }
86
87 SkColorMatrix cm;
88 cm.setRotate(SkColorMatrix::kG_Axis, 180);
89 cm.setIdentity();
90
91 this->setBGColor(0xFFDDDDDD);
92 }
93
94 protected:
95 // overrides from SkEventSink
onQuery(SkEvent * evt)96 virtual bool onQuery(SkEvent* evt) {
97 if (SampleCode::TitleQ(*evt)) {
98 SampleCode::TitleR(evt, "Effects");
99 return true;
100 }
101 return this->INHERITED::onQuery(evt);
102 }
103
onDrawContent(SkCanvas * canvas)104 virtual void onDrawContent(SkCanvas* canvas) {
105 canvas->scale(3, 3);
106 canvas->translate(10, 30);
107 for (size_t i = 0; i < SK_ARRAY_COUNT(fPaint); i++) {
108 canvas->drawPath(fPath, fPaint[i]);
109 canvas->translate(32, 0);
110 }
111 }
112
113 private:
114 typedef SampleView INHERITED;
115 };
116
117 ///////////////////////////////////////////////////////////////////////////////
118
MyFactory()119 static SkView* MyFactory() { return new EffectsView; }
120 static SkViewRegister reg(MyFactory);
121