| /* |
| * 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 "src/base/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: |
| using INHERITED = GM; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM(return new ArcOfZorroGM;) |
| } // namespace skiagm |