1/* 2 * Copyright 2013 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#include "gm.h" 9#include "SkCanvas.h" 10#include "SkBlurImageFilter.h" 11 12static void make_bm(SkBitmap* bm) { 13 bm->allocN32Pixels(100, 100); 14 bm->eraseColor(SK_ColorBLUE); 15 16 SkCanvas canvas(*bm); 17 SkPaint paint; 18 paint.setAntiAlias(true); 19 paint.setColor(SK_ColorRED); 20 canvas.drawCircle(50, 50, 50, paint); 21} 22 23static void draw_2_bitmaps(SkCanvas* canvas, const SkBitmap& bm, bool doClip, 24 int dx, int dy, SkImageFilter* filter = NULL) { 25 SkAutoCanvasRestore acr(canvas, true); 26 SkPaint paint; 27 28 SkRect clipR = SkRect::MakeXYWH(SkIntToScalar(dx), 29 SkIntToScalar(dy), 30 SkIntToScalar(bm.width()), 31 SkIntToScalar(bm.height())); 32 33 paint.setImageFilter(filter); 34 clipR.inset(5, 5); 35 36 if (doClip) { 37 canvas->save(); 38 canvas->clipRect(clipR); 39 } 40 canvas->drawSprite(bm, dx, dy, &paint); 41 if (doClip) { 42 canvas->restore(); 43 } 44 45 canvas->translate(SkIntToScalar(bm.width() + 20), 0); 46 47 if (doClip) { 48 canvas->save(); 49 canvas->clipRect(clipR); 50 } 51 canvas->drawBitmap(bm, SkIntToScalar(dx), SkIntToScalar(dy), &paint); 52 if (doClip) { 53 canvas->restore(); 54 } 55} 56 57/** 58 * Compare output of drawSprite and drawBitmap (esp. clipping and imagefilters) 59 */ 60class SpriteBitmapGM : public skiagm::GM { 61public: 62 SpriteBitmapGM() {} 63 64protected: 65 66 SkString onShortName() override { 67 return SkString("spritebitmap"); 68 } 69 70 SkISize onISize() override { 71 return SkISize::Make(640, 480); 72 } 73 74 void onDraw(SkCanvas* canvas) override { 75 SkBitmap bm; 76 make_bm(&bm); 77 78 int dx = 10; 79 int dy = 10; 80 81 SkScalar sigma = 8; 82 SkAutoTUnref<SkImageFilter> filter(SkBlurImageFilter::Create(sigma, sigma)); 83 84 draw_2_bitmaps(canvas, bm, false, dx, dy); 85 dy += bm.height() + 20; 86 draw_2_bitmaps(canvas, bm, false, dx, dy, filter); 87 dy += bm.height() + 20; 88 draw_2_bitmaps(canvas, bm, true, dx, dy); 89 dy += bm.height() + 20; 90 draw_2_bitmaps(canvas, bm, true, dx, dy, filter); 91 } 92 93private: 94 typedef GM INHERITED; 95}; 96 97////////////////////////////////////////////////////////////////////////////// 98 99DEF_GM( return new SpriteBitmapGM; ) 100