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
8 #include "gm.h"
9 #include "SkBlurMask.h"
10 #include "SkBlurMaskFilter.h"
11 #include "SkCanvas.h"
12 #include "SkGraphics.h"
13 #include "SkLayerDrawLooper.h"
14 #include "SkRandom.h"
15
16 #define WIDTH 200
17 #define HEIGHT 200
18
19 class DrawLooperGM : public skiagm::GM {
20 public:
DrawLooperGM()21 DrawLooperGM() : fLooper(NULL) {
22 this->setBGColor(0xFFDDDDDD);
23 }
24
~DrawLooperGM()25 virtual ~DrawLooperGM() {
26 SkSafeUnref(fLooper);
27 }
28
29 protected:
onISize()30 virtual SkISize onISize() {
31 return SkISize::Make(520, 160);
32 }
33
onShortName()34 virtual SkString onShortName() SK_OVERRIDE {
35 return SkString("drawlooper");
36 }
37
onDraw(SkCanvas * canvas)38 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
39 this->init();
40
41 SkPaint paint;
42 paint.setTextSize(SkIntToScalar(72));
43 paint.setLooper(fLooper);
44
45 canvas->drawCircle(SkIntToScalar(50), SkIntToScalar(50),
46 SkIntToScalar(30), paint);
47
48 canvas->drawRectCoords(SkIntToScalar(150), SkIntToScalar(50),
49 SkIntToScalar(200), SkIntToScalar(100), paint);
50
51 canvas->drawText("Looper", 6, SkIntToScalar(230), SkIntToScalar(100),
52 paint);
53 }
54
55 private:
56 SkLayerDrawLooper* fLooper;
57
init()58 void init() {
59 if (fLooper) return;
60
61 static const struct {
62 SkColor fColor;
63 SkPaint::Style fStyle;
64 SkScalar fWidth;
65 SkScalar fOffset;
66 SkScalar fBlur;
67 } gParams[] = {
68 { SK_ColorWHITE, SkPaint::kStroke_Style, SkIntToScalar(1)*3/4, 0, 0 },
69 { SK_ColorRED, SkPaint::kStroke_Style, SkIntToScalar(4), 0, 0 },
70 { SK_ColorBLUE, SkPaint::kFill_Style, 0, 0, 0 },
71 { 0x88000000, SkPaint::kFill_Style, 0, SkIntToScalar(10), SkIntToScalar(3) }
72 };
73
74 fLooper = new SkLayerDrawLooper;
75
76 SkLayerDrawLooper::LayerInfo info;
77 info.fFlagsMask = SkPaint::kAntiAlias_Flag;
78 info.fPaintBits = SkLayerDrawLooper::kStyle_Bit | SkLayerDrawLooper::kMaskFilter_Bit;
79 info.fColorMode = SkXfermode::kSrc_Mode;
80
81 for (size_t i = 0; i < SK_ARRAY_COUNT(gParams); i++) {
82 info.fOffset.set(gParams[i].fOffset, gParams[i].fOffset);
83 SkPaint* paint = fLooper->addLayer(info);
84 paint->setAntiAlias(true);
85 paint->setColor(gParams[i].fColor);
86 paint->setStyle(gParams[i].fStyle);
87 paint->setStrokeWidth(gParams[i].fWidth);
88 if (gParams[i].fBlur > 0) {
89 SkMaskFilter* mf = SkBlurMaskFilter::Create(SkBlurMaskFilter::kNormal_BlurStyle,
90 SkBlurMask::ConvertRadiusToSigma(gParams[i].fBlur));
91 paint->setMaskFilter(mf)->unref();
92 }
93 }
94 }
95
96 typedef GM INHERITED;
97 };
98
99 //////////////////////////////////////////////////////////////////////////////
100
MyFactory(void *)101 static skiagm::GM* MyFactory(void*) { return new DrawLooperGM; }
102 static skiagm::GMRegistry reg(MyFactory);
103