1 /* 2 * Copyright 2011 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 9 10 #include "gm.h" 11 #include "SkRandom.h" 12 13 namespace skiagm { 14 15 #define W 400 16 #define H 400 17 #define N 100 18 19 constexpr SkScalar SW = SkIntToScalar(W); 20 constexpr SkScalar SH = SkIntToScalar(H); 21 22 class StrokeRectsGM : public GM { 23 public: StrokeRectsGM()24 StrokeRectsGM() {} 25 26 protected: 27 onShortName()28 SkString onShortName() override { 29 return SkString("strokerects"); 30 } 31 onISize()32 SkISize onISize() override { 33 return SkISize::Make(W*2, H*2); 34 } 35 rnd_rect(SkRect * r,SkRandom & rand)36 static void rnd_rect(SkRect* r, SkRandom& rand) { 37 SkScalar x = rand.nextUScalar1() * W; 38 SkScalar y = rand.nextUScalar1() * H; 39 SkScalar w = rand.nextUScalar1() * (W >> 2); 40 SkScalar h = rand.nextUScalar1() * (H >> 2); 41 SkScalar hoffset = rand.nextSScalar1(); 42 SkScalar woffset = rand.nextSScalar1(); 43 44 r->set(x, y, x + w, y + h); 45 r->offset(-w/2 + woffset, -h/2 + hoffset); 46 } 47 onDraw(SkCanvas * canvas)48 void onDraw(SkCanvas* canvas) override { 49 SkPaint paint; 50 paint.setStyle(SkPaint::kStroke_Style); 51 52 for (int y = 0; y < 2; y++) { 53 paint.setAntiAlias(!!y); 54 for (int x = 0; x < 2; x++) { 55 paint.setStrokeWidth(x * SkIntToScalar(3)); 56 57 SkAutoCanvasRestore acr(canvas, true); 58 canvas->translate(SW * x, SH * y); 59 canvas->clipRect(SkRect::MakeLTRB( 60 SkIntToScalar(2), SkIntToScalar(2) 61 , SW - SkIntToScalar(2), SH - SkIntToScalar(2) 62 )); 63 64 SkRandom rand; 65 for (int i = 0; i < N; i++) { 66 SkRect r; 67 rnd_rect(&r, rand); 68 canvas->drawRect(r, paint); 69 } 70 } 71 } 72 } 73 74 private: 75 typedef GM INHERITED; 76 }; 77 78 ////////////////////////////////////////////////////////////////////////////// 79 80 DEF_GM( return new StrokeRectsGM; ) 81 82 } 83