1/* 2 * Copyright 2012 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 "SkMagnifierImageFilter.h" 10#include "SkRandom.h" 11 12#define WIDTH 500 13#define HEIGHT 500 14 15namespace skiagm { 16 17class ImageMagnifierGM : public GM { 18public: 19 ImageMagnifierGM() { 20 this->setBGColor(0xFF000000); 21 } 22 23protected: 24 25 SkString onShortName() override { 26 return SkString("imagemagnifier"); 27 } 28 29 SkISize onISize() override { 30 return SkISize::Make(WIDTH, HEIGHT); 31 } 32 33 void onDraw(SkCanvas* canvas) override { 34 SkPaint filterPaint; 35 filterPaint.setImageFilter( 36 SkMagnifierImageFilter::Create( 37 SkRect::MakeXYWH(SkIntToScalar(100), SkIntToScalar(100), 38 SkIntToScalar(WIDTH / 2), 39 SkIntToScalar(HEIGHT / 2)), 40 100))->unref(); 41 canvas->saveLayer(NULL, &filterPaint); 42 const char* str = "The quick brown fox jumped over the lazy dog."; 43 SkRandom rand; 44 for (int i = 0; i < 25; ++i) { 45 int x = rand.nextULessThan(WIDTH); 46 int y = rand.nextULessThan(HEIGHT); 47 SkPaint paint; 48 sk_tool_utils::set_portable_typeface(&paint); 49 paint.setColor(rand.nextBits(24) | 0xFF000000); 50 paint.setTextSize(rand.nextRangeScalar(0, 300)); 51 paint.setAntiAlias(true); 52 canvas->drawText(str, strlen(str), SkIntToScalar(x), 53 SkIntToScalar(y), paint); 54 } 55 canvas->restore(); 56 } 57 58private: 59 typedef GM INHERITED; 60}; 61 62////////////////////////////////////////////////////////////////////////////// 63 64static GM* MyFactory(void*) { return new ImageMagnifierGM; } 65static GMRegistry reg(MyFactory); 66 67} 68