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 "gm.h" 9 #include "SkCanvas.h" 10 #include "SkPaint.h" 11 #include "SkRandom.h" 12 13 namespace skiagm { 14 15 class EmptyPathGM : public GM { 16 public: 17 EmptyPathGM() {} 18 19 protected: 20 SkString onShortName() { 21 return SkString("emptypath"); 22 } 23 24 SkISize onISize() { return make_isize(600, 280); } 25 26 void drawEmpty(SkCanvas* canvas, 27 SkColor color, 28 const SkRect& clip, 29 SkPaint::Style style, 30 SkPath::FillType fill) { 31 SkPath path; 32 path.setFillType(fill); 33 SkPaint paint; 34 paint.setColor(color); 35 paint.setStyle(style); 36 canvas->save(); 37 canvas->clipRect(clip); 38 canvas->drawPath(path, paint); 39 canvas->restore(); 40 } 41 42 virtual void onDraw(SkCanvas* canvas) { 43 struct FillAndName { 44 SkPath::FillType fFill; 45 const char* fName; 46 }; 47 static const FillAndName gFills[] = { 48 {SkPath::kWinding_FillType, "Winding"}, 49 {SkPath::kEvenOdd_FillType, "Even / Odd"}, 50 {SkPath::kInverseWinding_FillType, "Inverse Winding"}, 51 {SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"}, 52 }; 53 struct StyleAndName { 54 SkPaint::Style fStyle; 55 const char* fName; 56 }; 57 static const StyleAndName gStyles[] = { 58 {SkPaint::kFill_Style, "Fill"}, 59 {SkPaint::kStroke_Style, "Stroke"}, 60 {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"}, 61 }; 62 63 SkPaint titlePaint; 64 titlePaint.setColor(SK_ColorBLACK); 65 titlePaint.setAntiAlias(true); 66 titlePaint.setLCDRenderText(true); 67 titlePaint.setTextSize(15 * SK_Scalar1); 68 const char title[] = "Empty Paths Drawn Into Rectangle Clips With " 69 "Indicated Style and Fill"; 70 canvas->drawText(title, strlen(title), 71 20 * SK_Scalar1, 72 20 * SK_Scalar1, 73 titlePaint); 74 75 SkRandom rand; 76 SkRect rect = SkRect::MakeWH(100*SK_Scalar1, 30*SK_Scalar1); 77 int i = 0; 78 canvas->save(); 79 canvas->translate(10 * SK_Scalar1, 0); 80 canvas->save(); 81 for (size_t style = 0; style < SK_ARRAY_COUNT(gStyles); ++style) { 82 for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) { 83 if (0 == i % 4) { 84 canvas->restore(); 85 canvas->translate(0, rect.height() + 40 * SK_Scalar1); 86 canvas->save(); 87 } else { 88 canvas->translate(rect.width() + 40 * SK_Scalar1, 0); 89 } 90 ++i; 91 92 93 SkColor color = rand.nextU(); 94 color = 0xff000000| color; // force solid 95 this->drawEmpty(canvas, color, rect, 96 gStyles[style].fStyle, gFills[fill].fFill); 97 98 SkPaint rectPaint; 99 rectPaint.setColor(SK_ColorBLACK); 100 rectPaint.setStyle(SkPaint::kStroke_Style); 101 rectPaint.setStrokeWidth(-1); 102 rectPaint.setAntiAlias(true); 103 canvas->drawRect(rect, rectPaint); 104 105 SkPaint labelPaint; 106 labelPaint.setColor(color); 107 labelPaint.setAntiAlias(true); 108 labelPaint.setLCDRenderText(true); 109 labelPaint.setTextSize(12 * SK_Scalar1); 110 canvas->drawText(gStyles[style].fName, 111 strlen(gStyles[style].fName), 112 0, rect.height() + 15 * SK_Scalar1, 113 labelPaint); 114 canvas->drawText(gFills[fill].fName, 115 strlen(gFills[fill].fName), 116 0, rect.height() + 28 * SK_Scalar1, 117 labelPaint); 118 } 119 } 120 canvas->restore(); 121 canvas->restore(); 122 } 123 124 private: 125 typedef GM INHERITED; 126 }; 127 128 ////////////////////////////////////////////////////////////////////////////// 129 130 static GM* MyFactory(void*) { return new EmptyPathGM; } 131 static GMRegistry reg(MyFactory); 132 133 } 134