102 lines
2.8 KiB
C++
102 lines
2.8 KiB
C++
/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkPath.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/private/SkTArray.h"
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namespace skiagm {
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// this GM tests hairlines which fill nearly the entire render target
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class StLouisArchGM : public GM {
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protected:
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SkString onShortName() override {
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return SkString("stlouisarch");
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}
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SkISize onISize() override { return SkISize::Make((int)kWidth, (int)kHeight); }
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void onOnceBeforeDraw() override {
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{
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SkPath* bigQuad = &fPaths.push_back();
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bigQuad->moveTo(0, 0);
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bigQuad->quadTo(kWidth/2, kHeight, kWidth, 0);
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}
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{
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SkPath* degenBigQuad = &fPaths.push_back();
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SkScalar yPos = kHeight / 2 + 10;
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degenBigQuad->moveTo(0, yPos);
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degenBigQuad->quadTo(0, yPos, kWidth, yPos);
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}
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{
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SkPath* bigCubic = &fPaths.push_back();
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bigCubic->moveTo(0, 0);
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bigCubic->cubicTo(0, kHeight,
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kWidth, kHeight,
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kWidth, 0);
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}
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{
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SkPath* degenBigCubic = &fPaths.push_back();
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SkScalar yPos = kHeight / 2;
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degenBigCubic->moveTo(0, yPos);
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degenBigCubic->cubicTo(0, yPos,
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0, yPos,
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kWidth, yPos);
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}
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{
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SkPath* bigConic = &fPaths.push_back();
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bigConic->moveTo(0, 0);
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bigConic->conicTo(kWidth/2, kHeight, kWidth, 0, .5);
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}
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{
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SkPath* degenBigConic = &fPaths.push_back();
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SkScalar yPos = kHeight / 2 - 10;
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degenBigConic->moveTo(0, yPos);
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degenBigConic->conicTo(0, yPos, kWidth, yPos, .5);
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}
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}
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void onDraw(SkCanvas* canvas) override {
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canvas->save();
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canvas->scale(1, -1);
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canvas->translate(0, -kHeight);
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for (int p = 0; p < fPaths.count(); ++p) {
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SkPaint paint;
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paint.setARGB(0xff, 0, 0, 0);
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paint.setAntiAlias(true);
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paint.setStyle(SkPaint::kStroke_Style);
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paint.setStrokeWidth(0);
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canvas->drawPath(fPaths[p], paint);
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}
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canvas->restore();
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}
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const SkScalar kWidth = 256;
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const SkScalar kHeight = 256;
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private:
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SkTArray<SkPath> fPaths;
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using INHERITED = GM;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM( return new StLouisArchGM; )
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} // namespace skiagm
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