88 lines
2.6 KiB
C++
88 lines
2.6 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/SkPathBuilder.h"
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#include "include/core/SkRect.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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class ScaledStrokesGM : public skiagm::GM {
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public:
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ScaledStrokesGM() {}
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protected:
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SkString onShortName() override {
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return SkString("scaledstrokes");
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}
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SkISize onISize() override {
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return SkISize::Make(640, 320);
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}
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static void draw_path(SkScalar size, SkCanvas* canvas, SkPaint paint) {
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SkScalar c = 0.551915024494f * size;
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SkPathBuilder path;
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path.moveTo(0.0f, size);
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path.cubicTo(c, size, size, c, size, 0.0f);
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path.cubicTo(size, -c, c, -size, 0.0f, -size);
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path.cubicTo(-c, -size, -size, -c, -size, 0.0f);
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path.cubicTo(-size, c, -c, size, 0.0f, size);
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canvas->drawPath(path.detach(), paint);
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}
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void onDraw(SkCanvas* canvas) override {
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SkPaint paint;
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SkPath path;
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paint.setStyle(SkPaint::Style::kStroke_Style);
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canvas->translate(5.0f, 5.0f);
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const SkScalar size = 60.0f;
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for (int i = 0; i < 2; i++) {
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paint.setAntiAlias(i == 1);
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for (int j = 0; j < 4; j++) {
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SkScalar scale = 4.0f - j;
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paint.setStrokeWidth(4.0f / scale);
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canvas->save();
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canvas->translate(size / 2.0f, size / 2.0f);
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canvas->scale(scale, scale);
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draw_path(size / 2.0f / scale, canvas, paint);
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canvas->restore();
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canvas->save();
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canvas->translate(size / 2.0f, 80.0f + size / 2.0f);
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canvas->scale(scale, scale);
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canvas->drawCircle(0.0f, 0.0f, size / 2.0f / scale, paint);
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canvas->restore();
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canvas->save();
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canvas->translate(0.0f, 160.0f);
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canvas->scale(scale, scale);
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canvas->drawRect(SkRect::MakeXYWH(0.0f, 0.0f, size / scale, size / scale), paint);
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canvas->restore();
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canvas->save();
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canvas->translate(0.0f, 240.0f);
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canvas->scale(scale, scale);
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canvas->drawLine(0.0f, 0.0f, size / scale, size / scale, paint);
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canvas->restore();
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canvas->translate(80.0f, 0.0f);
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}
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}
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}
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private:
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using INHERITED = GM;
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};
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DEF_GM( return new ScaledStrokesGM; )
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