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| 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 "SkView.h" | |
| 10 #include "SkCanvas.h" | |
| 11 #include "SkGradientShader.h" | |
| 12 #include "SkAvoidXfermode.h" | |
| 13 | |
| 14 /////////////////////////////////////////////////////////////////////////////// | |
| 15 | |
| 16 class AvoidView : public SampleView { | |
| 17 SkShader* fShader; | |
| 18 | |
| 19 enum { | |
| 20 W = 480, | |
| 21 H = 320 | |
| 22 }; | |
| 23 public: | |
| 24 AvoidView() { | |
| 25 SkColor colors[] = { SK_ColorRED, SK_ColorYELLOW, SK_ColorGREEN, SK_Colo
rCYAN, SK_ColorBLUE }; | |
| 26 | |
| 27 #if 0 | |
| 28 SkPoint pts[] = { 0, 0, SkIntToScalar(100), SkIntToScalar(100) }; | |
| 29 fShader = SkGradientShader::CreateLinear(pts, colors, NULL, | |
| 30 SK_ARRAY_COUNT(colors), | |
| 31 SkShader::kMirror_TileMode); | |
| 32 #else | |
| 33 SkPoint pts[] = { { SkIntToScalar(W)/2, SkIntToScalar(H)/2 } }; | |
| 34 fShader = SkGradientShader::CreateRadial(pts[0], SkIntToScalar(H)/5, | |
| 35 colors, NULL, | |
| 36 SK_ARRAY_COUNT(colors), | |
| 37 SkShader::kMirror_TileMode); | |
| 38 #endif | |
| 39 } | |
| 40 | |
| 41 virtual ~AvoidView() { | |
| 42 fShader->unref(); | |
| 43 } | |
| 44 | |
| 45 protected: | |
| 46 virtual bool onQuery(SkEvent* evt) { | |
| 47 if (SampleCode::TitleQ(*evt)) { | |
| 48 SampleCode::TitleR(evt, "AvoidXfermode"); | |
| 49 return true; | |
| 50 } | |
| 51 return this->INHERITED::onQuery(evt); | |
| 52 } | |
| 53 | |
| 54 virtual void onDrawContent(SkCanvas* canvas) { | |
| 55 SkPaint paint; | |
| 56 SkRect r = { 0, 0, SkIntToScalar(W), SkIntToScalar(H) }; | |
| 57 | |
| 58 canvas->translate(r.width() / 6, r.height() / 6); | |
| 59 | |
| 60 paint.setShader(fShader); | |
| 61 canvas->drawRect(r, paint); | |
| 62 | |
| 63 static const struct { | |
| 64 int fTolerance; | |
| 65 SkAvoidXfermode::Mode fMode; | |
| 66 float fDX, fDY; | |
| 67 } gData[] = { | |
| 68 { 16, SkAvoidXfermode::kAvoidColor_Mode, 0, 0 }, | |
| 69 { 255-16, SkAvoidXfermode::kAvoidColor_Mode, 1, 0 }, | |
| 70 { 16, SkAvoidXfermode::kTargetColor_Mode, 0, 1 }, | |
| 71 { 255-16, SkAvoidXfermode::kTargetColor_Mode, 1, 1 }, | |
| 72 }; | |
| 73 | |
| 74 paint.setShader(NULL); | |
| 75 paint.setColor(SK_ColorMAGENTA); | |
| 76 | |
| 77 SkPaint frameP; | |
| 78 frameP.setStyle(SkPaint::kStroke_Style); | |
| 79 | |
| 80 for (size_t i = 0; i < SK_ARRAY_COUNT(gData); i++) { | |
| 81 SkAutoTUnref<SkAvoidXfermode> mode(SkAvoidXfermode::Create( | |
| 82 SK_ColorGREEN, gData[i].fTolerance, gData[i].fMode)); | |
| 83 paint.setXfermode(mode); | |
| 84 int div = 3; | |
| 85 SkRect rr = { 0, 0, r.width()/div, r.height()/div }; | |
| 86 rr.offset(r.width()/4 - rr.width()/2, r.height()/4 - rr.height()/2); | |
| 87 rr.offset(r.width() * gData[i].fDX/2, r.height() * gData[i].fDY/2); | |
| 88 canvas->drawRect(rr, paint); | |
| 89 paint.setXfermode(NULL); | |
| 90 | |
| 91 canvas->drawRect(rr, frameP); | |
| 92 } | |
| 93 } | |
| 94 | |
| 95 private: | |
| 96 typedef SampleView INHERITED; | |
| 97 }; | |
| 98 | |
| 99 ////////////////////////////////////////////////////////////////////////////// | |
| 100 | |
| 101 static SkView* MyFactory() { | |
| 102 return new AvoidView; | |
| 103 } | |
| 104 | |
| 105 static SkViewRegister reg(MyFactory); | |
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Chromium Code Reviews
Issue 860583002:
remove unused SkAvoidXfermode (Closed)
Base URL: https://skia.googlesource.com/skia.git@master