1fea7763140ba74b78f2c30028452e250140b6f21ethannicholas/* 2fea7763140ba74b78f2c30028452e250140b6f21ethannicholas * Copyright 2015 Google Inc. 3fea7763140ba74b78f2c30028452e250140b6f21ethannicholas * 4fea7763140ba74b78f2c30028452e250140b6f21ethannicholas * Use of this source code is governed by a BSD-style license that can be 5fea7763140ba74b78f2c30028452e250140b6f21ethannicholas * found in the LICENSE file. 6fea7763140ba74b78f2c30028452e250140b6f21ethannicholas */ 7fea7763140ba74b78f2c30028452e250140b6f21ethannicholas 8fea7763140ba74b78f2c30028452e250140b6f21ethannicholas#include "gm.h" 9fea7763140ba74b78f2c30028452e250140b6f21ethannicholas#include "SkCanvas.h" 10fea7763140ba74b78f2c30028452e250140b6f21ethannicholas#include "SkRRect.h" 11fea7763140ba74b78f2c30028452e250140b6f21ethannicholas#include "SkPath.h" 12fea7763140ba74b78f2c30028452e250140b6f21ethannicholas 13fea7763140ba74b78f2c30028452e250140b6f21ethannicholasclass ScaledStrokesGM : public skiagm::GM { 14fea7763140ba74b78f2c30028452e250140b6f21ethannicholaspublic: 15fea7763140ba74b78f2c30028452e250140b6f21ethannicholas ScaledStrokesGM() {} 16fea7763140ba74b78f2c30028452e250140b6f21ethannicholas 17fea7763140ba74b78f2c30028452e250140b6f21ethannicholasprotected: 18fea7763140ba74b78f2c30028452e250140b6f21ethannicholas 19fea7763140ba74b78f2c30028452e250140b6f21ethannicholas SkString onShortName() override { 20fea7763140ba74b78f2c30028452e250140b6f21ethannicholas return SkString("scaledstrokes"); 21fea7763140ba74b78f2c30028452e250140b6f21ethannicholas } 22fea7763140ba74b78f2c30028452e250140b6f21ethannicholas 23fea7763140ba74b78f2c30028452e250140b6f21ethannicholas SkISize onISize() override { 24fea7763140ba74b78f2c30028452e250140b6f21ethannicholas return SkISize::Make(640, 320); 25fea7763140ba74b78f2c30028452e250140b6f21ethannicholas } 26fea7763140ba74b78f2c30028452e250140b6f21ethannicholas 27fea7763140ba74b78f2c30028452e250140b6f21ethannicholas static void draw_path(SkScalar size, SkCanvas* canvas, SkPaint paint) { 28fea7763140ba74b78f2c30028452e250140b6f21ethannicholas SkScalar c = 0.551915024494f * size; 29fea7763140ba74b78f2c30028452e250140b6f21ethannicholas SkPath path; 30fea7763140ba74b78f2c30028452e250140b6f21ethannicholas path.moveTo(0.0f, size); 31fea7763140ba74b78f2c30028452e250140b6f21ethannicholas path.cubicTo(c, size, size, c, size, 0.0f); 32fea7763140ba74b78f2c30028452e250140b6f21ethannicholas path.cubicTo(size, -c, c, -size, 0.0f, -size); 33fea7763140ba74b78f2c30028452e250140b6f21ethannicholas path.cubicTo(-c, -size, -size, -c, -size, 0.0f); 34fea7763140ba74b78f2c30028452e250140b6f21ethannicholas path.cubicTo(-size, c, -c, size, 0.0f, size); 35fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->drawPath(path, paint); 36fea7763140ba74b78f2c30028452e250140b6f21ethannicholas } 37fea7763140ba74b78f2c30028452e250140b6f21ethannicholas 38fea7763140ba74b78f2c30028452e250140b6f21ethannicholas void onDraw(SkCanvas* canvas) override { 39fea7763140ba74b78f2c30028452e250140b6f21ethannicholas SkPaint paint; 40fea7763140ba74b78f2c30028452e250140b6f21ethannicholas SkPath path; 41fea7763140ba74b78f2c30028452e250140b6f21ethannicholas paint.setStyle(SkPaint::Style::kStroke_Style); 42fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->translate(5.0f, 5.0f); 43fea7763140ba74b78f2c30028452e250140b6f21ethannicholas const SkScalar size = 60.0f; 44fea7763140ba74b78f2c30028452e250140b6f21ethannicholas for (int i = 0; i < 2; i++) { 45fea7763140ba74b78f2c30028452e250140b6f21ethannicholas paint.setAntiAlias(i == 1); 46fea7763140ba74b78f2c30028452e250140b6f21ethannicholas for (int j = 0; j < 4; j++) { 47fea7763140ba74b78f2c30028452e250140b6f21ethannicholas SkScalar scale = 4.0f - j; 48fea7763140ba74b78f2c30028452e250140b6f21ethannicholas paint.setStrokeWidth(4.0f / scale); 49fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->save(); 50fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->translate(size / 2.0f, size / 2.0f); 51fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->scale(scale, scale); 52fea7763140ba74b78f2c30028452e250140b6f21ethannicholas draw_path(size / 2.0f / scale, canvas, paint); 53fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->restore(); 54fea7763140ba74b78f2c30028452e250140b6f21ethannicholas 55fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->save(); 56fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->translate(size / 2.0f, 80.0f + size / 2.0f); 57fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->scale(scale, scale); 58fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->drawCircle(0.0f, 0.0f, size / 2.0f / scale, paint); 59fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->restore(); 60fea7763140ba74b78f2c30028452e250140b6f21ethannicholas 61fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->save(); 62fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->translate(0.0f, 160.0f); 63fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->scale(scale, scale); 64fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->drawRect(SkRect::MakeXYWH(0.0f, 0.0f, size / scale, size / scale), paint); 65fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->restore(); 66fea7763140ba74b78f2c30028452e250140b6f21ethannicholas 67fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->save(); 68fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->translate(0.0f, 240.0f); 69fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->scale(scale, scale); 70fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->drawLine(0.0f, 0.0f, size / scale, size / scale, paint); 71fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->restore(); 72fea7763140ba74b78f2c30028452e250140b6f21ethannicholas 73fea7763140ba74b78f2c30028452e250140b6f21ethannicholas canvas->translate(80.0f, 0.0f); 74fea7763140ba74b78f2c30028452e250140b6f21ethannicholas } 75fea7763140ba74b78f2c30028452e250140b6f21ethannicholas } 76fea7763140ba74b78f2c30028452e250140b6f21ethannicholas 77fea7763140ba74b78f2c30028452e250140b6f21ethannicholas } 78fea7763140ba74b78f2c30028452e250140b6f21ethannicholas 79fea7763140ba74b78f2c30028452e250140b6f21ethannicholasprivate: 80fea7763140ba74b78f2c30028452e250140b6f21ethannicholas typedef GM INHERITED; 81fea7763140ba74b78f2c30028452e250140b6f21ethannicholas}; 82fea7763140ba74b78f2c30028452e250140b6f21ethannicholas 83fea7763140ba74b78f2c30028452e250140b6f21ethannicholasDEF_GM( return new ScaledStrokesGM; ) 84