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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 | |
| 12 static const int kILimit = 101; | |
| 13 static const SkScalar kLimit = SK_Scalar1 * kILimit; | |
| 14 | |
| 15 class OvalTestView : public SampleView { | |
| 16 public: | |
| 17 SkSize fSize; | |
| 18 SkPMColor fInsideColor; // signals an interior pixel that was not set | |
| 19 SkPMColor fOutsideColor; // signals an exterior pixels that was set | |
| 20 SkBitmap fBitmap; | |
| 21 | |
| 22 OvalTestView() { | |
| 23 fSize.set(SK_Scalar1, SK_Scalar1); | |
| 24 | |
| 25 fBitmap.allocN32Pixels(kILimit, kILimit); | |
| 26 | |
| 27 fInsideColor = SkPreMultiplyColor(SK_ColorRED); | |
| 28 fOutsideColor = SkPreMultiplyColor(SK_ColorGREEN); | |
| 29 | |
| 30 this->setBGColor(0xFFDDDDDD); | |
| 31 } | |
| 32 | |
| 33 protected: | |
| 34 // overrides from SkEventSink | |
| 35 virtual bool onQuery(SkEvent* evt) { | |
| 36 if (SampleCode::TitleQ(*evt)) { | |
| 37 SampleCode::TitleR(evt, "OvalTest"); | |
| 38 return true; | |
| 39 } | |
| 40 return this->INHERITED::onQuery(evt); | |
| 41 } | |
| 42 | |
| 43 void drawOval() { | |
| 44 SkCanvas canvas(fBitmap); | |
| 45 SkPaint p; | |
| 46 | |
| 47 fBitmap.eraseColor(SK_ColorTRANSPARENT); | |
| 48 canvas.drawOval(SkRect::MakeSize(fSize), p); | |
| 49 } | |
| 50 | |
| 51 int checkOval(int* flatCount, int* buldgeCount) { | |
| 52 int flatc = 0; | |
| 53 int buldgec = 0; | |
| 54 const SkScalar rad = SkScalarHalf(fSize.width()); | |
| 55 SkScalar cx = SkScalarHalf(fSize.width()); | |
| 56 SkScalar cy = SkScalarHalf(fSize.height()); | |
| 57 for (int y = 0; y < kILimit; y++) { | |
| 58 for (int x = 0; x < kILimit; x++) { | |
| 59 // measure from pixel centers | |
| 60 SkScalar px = SkIntToScalar(x) + SK_ScalarHalf; | |
| 61 SkScalar py = SkIntToScalar(y) + SK_ScalarHalf; | |
| 62 | |
| 63 SkPMColor* ptr = fBitmap.getAddr32(x, y); | |
| 64 SkScalar dist = SkPoint::Length(px - cx, py - cy); | |
| 65 if (dist <= rad && !*ptr) { | |
| 66 flatc++; | |
| 67 *ptr = fInsideColor; | |
| 68 } else if (dist > rad && *ptr) { | |
| 69 buldgec++; | |
| 70 *ptr = fOutsideColor; | |
| 71 } | |
| 72 } | |
| 73 } | |
| 74 if (flatCount) *flatCount = flatc; | |
| 75 if (buldgeCount) *buldgeCount = buldgec; | |
| 76 return flatc + buldgec; | |
| 77 } | |
| 78 | |
| 79 virtual void onDrawContent(SkCanvas* canvas) { | |
| 80 this->drawOval(); | |
| 81 int flatCount, buldgeCount; | |
| 82 this->checkOval(&flatCount, &buldgeCount); | |
| 83 this->inval(NULL); | |
| 84 | |
| 85 canvas->drawBitmap(fBitmap, SkIntToScalar(20), SkIntToScalar(20), NULL); | |
| 86 | |
| 87 | |
| 88 static int gFlatCount; | |
| 89 static int gBuldgeCount; | |
| 90 gFlatCount += flatCount; | |
| 91 gBuldgeCount += buldgeCount; | |
| 92 | |
| 93 if (fSize.fWidth < kLimit) { | |
| 94 SkDebugf("--- width=%g, flat=%d buldge=%d total: flat=%d buldge=%d\n
", fSize.fWidth, | |
| 95 flatCount, buldgeCount, gFlatCount, gBuldgeCount); | |
| 96 fSize.fWidth += SK_Scalar1; | |
| 97 fSize.fHeight += SK_Scalar1; | |
| 98 } else { | |
| 99 // fSize.set(SK_Scalar1, SK_Scalar1); | |
| 100 } | |
| 101 } | |
| 102 | |
| 103 SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) SK_OVERR
IDE { | |
| 104 this->inval(NULL); | |
| 105 return NULL; | |
| 106 } | |
| 107 | |
| 108 private: | |
| 109 typedef SampleView INHERITED; | |
| 110 }; | |
| 111 | |
| 112 /////////////////////////////////////////////////////////////////////////////// | |
| 113 | |
| 114 static SkView* MyFactory() { return new OvalTestView; } | |
| 115 static SkViewRegister reg(MyFactory); | |
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Chromium Code Reviews
Issue 901933004:
migrate more samples over to SkAnimTImer (Closed)
Base URL: https://skia.googlesource.com/skia.git@master