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 virtual uint32_t onGetFlags() const SK_OVERRIDE { 25 // Skip tiled drawing until https://code.google.com/p/skia/issues/detail?id=781 is fixed. 26 return this->INHERITED::onGetFlags() | GM::kSkipTiled_Flag; 27 } 28 29 virtual SkString onShortName() SK_OVERRIDE { 30 return SkString("imagemagnifier"); 31 } 32 33 virtual SkISize onISize() SK_OVERRIDE { 34 return SkISize::Make(WIDTH, HEIGHT); 35 } 36 37 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { 38 SkPaint paint; 39 paint.setImageFilter( 40 SkMagnifierImageFilter::Create( 41 SkRect::MakeXYWH(SkIntToScalar(100), SkIntToScalar(100), 42 SkIntToScalar(WIDTH / 2), 43 SkIntToScalar(HEIGHT / 2)), 44 100))->unref(); 45 canvas->saveLayer(NULL, &paint); 46 paint.setAntiAlias(true); 47 sk_tool_utils::set_portable_typeface(&paint); 48 const char* str = "The quick brown fox jumped over the lazy dog."; 49 SkRandom rand; 50 for (int i = 0; i < 25; ++i) { 51 int x = rand.nextULessThan(WIDTH); 52 int y = rand.nextULessThan(HEIGHT); 53 paint.setColor(rand.nextBits(24) | 0xFF000000); 54 paint.setTextSize(rand.nextRangeScalar(0, 300)); 55 canvas->drawText(str, strlen(str), SkIntToScalar(x), 56 SkIntToScalar(y), paint); 57 } 58 canvas->restore(); 59 } 60 61private: 62 typedef GM INHERITED; 63}; 64 65////////////////////////////////////////////////////////////////////////////// 66 67static GM* MyFactory(void*) { return new ImageMagnifierGM; } 68static GMRegistry reg(MyFactory); 69 70} 71