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- /*
- * 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/gm.h"
- #include "include/core/SkCanvas.h"
- #include "include/core/SkColor.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkRect.h"
- #include "include/core/SkScalar.h"
- #include "include/core/SkSize.h"
- #include "include/core/SkString.h"
- #include "include/utils/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:
- SkString onShortName() override {
- return SkString("arcofzorro");
- }
- SkISize onISize() override {
- return SkISize::Make(1000, 1000);
- }
- void onDraw(SkCanvas* canvas) override {
- SkRandom 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 new ArcOfZorroGM;)
- }
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