1 #include "SampleCode.h" 2 #include "SkView.h" 3 #include "SkCanvas.h" 4 #include "SkGradientShader.h" 5 #include "SkPath.h" 6 #include "SkRegion.h" 7 #include "SkShader.h" 8 #include "SkUtils.h" 9 #include "SkComposeShader.h" 10 #include "Sk1DPathEffect.h" 11 #include "SkCornerPathEffect.h" 12 #include "SkPathMeasure.h" 13 #include "SkRandom.h" 14 #include "SkColorPriv.h" 15 #include "SkColorFilter.h" 16 #include "SkLayerRasterizer.h" 17 18 #include "SkParsePath.h" 19 static void testparse() { 20 SkRect r; 21 r.set(0, 0, SkFloatToScalar(10), SkFloatToScalar(10.5)); 22 SkPath p, p2; 23 SkString str, str2; 24 25 p.addRect(r); 26 SkParsePath::ToSVGString(p, &str); 27 SkParsePath::FromSVGString(str.c_str(), &p2); 28 SkParsePath::ToSVGString(p2, &str2); 29 } 30 31 class ArcsView : public SampleView { 32 public: 33 ArcsView() { 34 testparse(); 35 fSweep = SkIntToScalar(100); 36 this->setBGColor(0xFFDDDDDD); 37 } 38 39 protected: 40 // overrides from SkEventSink 41 virtual bool onQuery(SkEvent* evt) { 42 if (SampleCode::TitleQ(*evt)) { 43 SampleCode::TitleR(evt, "Arcs"); 44 return true; 45 } 46 return this->INHERITED::onQuery(evt); 47 } 48 49 static void drawRectWithLines(SkCanvas* canvas, const SkRect& r, const SkPaint& p) { 50 canvas->drawRect(r, p); 51 canvas->drawLine(r.fLeft, r.fTop, r.fRight, r.fBottom, p); 52 canvas->drawLine(r.fLeft, r.fBottom, r.fRight, r.fTop, p); 53 canvas->drawLine(r.fLeft, r.centerY(), r.fRight, r.centerY(), p); 54 canvas->drawLine(r.centerX(), r.fTop, r.centerX(), r.fBottom, p); 55 } 56 57 static void draw_label(SkCanvas* canvas, const SkRect& rect, 58 int start, int sweep) { 59 SkPaint paint; 60 61 paint.setAntiAlias(true); 62 paint.setTextAlign(SkPaint::kCenter_Align); 63 64 SkString str; 65 66 str.appendS32(start); 67 str.append(", "); 68 str.appendS32(sweep); 69 canvas->drawText(str.c_str(), str.size(), rect.centerX(), 70 rect.fBottom + paint.getTextSize() * 5/4, paint); 71 } 72 73 static void drawArcs(SkCanvas* canvas) { 74 SkPaint paint; 75 SkRect r; 76 SkScalar w = SkIntToScalar(75); 77 SkScalar h = SkIntToScalar(50); 78 79 r.set(0, 0, w, h); 80 paint.setAntiAlias(true); 81 paint.setStyle(SkPaint::kStroke_Style); 82 83 canvas->save(); 84 canvas->translate(SkIntToScalar(10), SkIntToScalar(300)); 85 86 paint.setStrokeWidth(SkIntToScalar(1)); 87 88 static const int gAngles[] = { 89 0, 360, 90 0, 45, 91 0, -45, 92 720, 135, 93 -90, 269, 94 -90, 270, 95 -90, 271, 96 -180, -270, 97 225, 90 98 }; 99 100 for (size_t i = 0; i < SK_ARRAY_COUNT(gAngles); i += 2) { 101 paint.setColor(SK_ColorBLACK); 102 drawRectWithLines(canvas, r, paint); 103 104 paint.setColor(SK_ColorRED); 105 canvas->drawArc(r, SkIntToScalar(gAngles[i]), 106 SkIntToScalar(gAngles[i+1]), false, paint); 107 108 draw_label(canvas, r, gAngles[i], gAngles[i+1]); 109 110 canvas->translate(w * 8 / 7, 0); 111 } 112 113 canvas->restore(); 114 } 115 116 virtual void onDrawContent(SkCanvas* canvas) { 117 fSweep = SampleCode::GetAnimScalar(SkIntToScalar(360)/24, 118 SkIntToScalar(360)); 119 // fSweep = SkFloatToScalar(359.99f); 120 121 SkRect r; 122 SkPaint paint; 123 124 paint.setAntiAlias(true); 125 paint.setStrokeWidth(SkIntToScalar(2)); 126 paint.setStyle(SkPaint::kStroke_Style); 127 128 r.set(0, 0, SkIntToScalar(200), SkIntToScalar(200)); 129 r.offset(SkIntToScalar(20), SkIntToScalar(20)); 130 131 if (false) { 132 const SkScalar d = SkIntToScalar(3); 133 const SkScalar rad[] = { d, d, d, d, d, d, d, d }; 134 SkPath path; 135 path.addRoundRect(r, rad); 136 canvas->drawPath(path, paint); 137 return; 138 } 139 140 drawRectWithLines(canvas, r, paint); 141 142 // printf("----- sweep %g %X\n", SkScalarToFloat(fSweep), SkDegreesToRadians(fSweep)); 143 144 145 paint.setStyle(SkPaint::kFill_Style); 146 paint.setColor(0x800000FF); 147 canvas->drawArc(r, 0, fSweep, true, paint); 148 149 paint.setColor(0x800FF000); 150 canvas->drawArc(r, 0, fSweep, false, paint); 151 152 paint.setStyle(SkPaint::kStroke_Style); 153 paint.setColor(SK_ColorRED); 154 canvas->drawArc(r, 0, fSweep, true, paint); 155 156 paint.setStrokeWidth(0); 157 paint.setColor(SK_ColorBLUE); 158 canvas->drawArc(r, 0, fSweep, false, paint); 159 160 drawArcs(canvas); 161 this->inval(NULL); 162 } 163 164 virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) { 165 // fSweep += SK_Scalar1; 166 this->inval(NULL); 167 return this->INHERITED::onFindClickHandler(x, y); 168 } 169 170 virtual bool onClick(Click* click) { 171 return this->INHERITED::onClick(click); 172 } 173 174 private: 175 SkScalar fSweep; 176 177 typedef SampleView INHERITED; 178 }; 179 180 ////////////////////////////////////////////////////////////////////////////// 181 182 static SkView* MyFactory() { return new ArcsView; } 183 static SkViewRegister reg(MyFactory); 184 185
