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Diffstat (limited to 'gm/arcofzorro.cpp')
-rw-r--r-- | gm/arcofzorro.cpp | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/gm/arcofzorro.cpp b/gm/arcofzorro.cpp new file mode 100644 index 0000000000..1e38130595 --- /dev/null +++ b/gm/arcofzorro.cpp @@ -0,0 +1,83 @@ +/* + * Copyright 2013 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "gm.h" +#include "SkRandom.h" + +namespace skiagm { + +// This GM draws a lot of arcs in a 'Z' shape. It particularly exercises +// the 'drawArc' code near a singularly of its processing (i.e., near the +// edge of one of its underlying quads). +class ArcOfZorroGM : public GM { +public: + ArcOfZorroGM() { + this->setBGColor(0xFFCCCCCC); + } + +protected: + virtual SkString onShortName() SK_OVERRIDE { + return SkString("arcofzorro"); + } + + virtual SkISize onISize() SK_OVERRIDE { + return make_isize(1000, 1000); + } + + virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { + SkMWCRandom rand; + + SkRect rect = SkRect::MakeXYWH(10, 10, 200, 200); + + SkPaint p; + + p.setStyle(SkPaint::kStroke_Style); + p.setStrokeWidth(35); + int xOffset = 0, yOffset = 0; + int direction = 0; + + for (float arc = 134.0f; arc < 136.0f; arc += 0.01f) { + SkColor color = rand.nextU(); + color |= 0xff000000; + p.setColor(color); + + canvas->save(); + canvas->translate(SkIntToScalar(xOffset), SkIntToScalar(yOffset)); + canvas->drawArc(rect, 0, arc, false, p); + canvas->restore(); + + switch (direction) { + case 0: + xOffset += 10; + if (xOffset >= 700) { + direction = 1; + } + break; + case 1: + xOffset -= 10; + yOffset += 10; + if (xOffset < 50) { + direction = 2; + } + break; + case 2: + xOffset += 10; + break; + } + } + + } + +private: + typedef GM INHERITED; +}; + +////////////////////////////////////////////////////////////////////////////// + +DEF_GM( return SkNEW(ArcOfZorroGM); ) + +} |