1 /* 2 * Copyright 2014 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 "SkBlurImageFilter.h" 10 #include "SkRandom.h" 11 12 #define WIDTH 640 13 #define HEIGHT 480 14 15 namespace skiagm { 16 17 class ImageBlurTiledGM : public GM { 18 public: 19 ImageBlurTiledGM(SkScalar sigmaX, SkScalar sigmaY) 20 : fSigmaX(sigmaX), fSigmaY(sigmaY) { 21 } 22 23 protected: 24 virtual SkString onShortName() { 25 return SkString("imageblurtiled"); 26 } 27 28 virtual SkISize onISize() { 29 return SkISize::Make(WIDTH, HEIGHT); 30 } 31 32 virtual void onDraw(SkCanvas* canvas) { 33 SkPaint paint; 34 paint.setImageFilter(SkBlurImageFilter::Create(fSigmaX, fSigmaY))->unref(); 35 const SkScalar tile_size = SkIntToScalar(128); 36 SkRect bounds; 37 if (!canvas->getClipBounds(&bounds)) { 38 bounds.setEmpty(); 39 } 40 for (SkScalar y = bounds.top(); y < bounds.bottom(); y += tile_size) { 41 for (SkScalar x = bounds.left(); x < bounds.right(); x += tile_size) { 42 canvas->save(); 43 canvas->clipRect(SkRect::MakeXYWH(x, y, tile_size, tile_size)); 44 canvas->saveLayer(NULL, &paint); 45 const char* str[] = { 46 "The quick", 47 "brown fox", 48 "jumped over", 49 "the lazy dog.", 50 }; 51 SkPaint textPaint; 52 textPaint.setAntiAlias(true); 53 textPaint.setTextSize(SkIntToScalar(100)); 54 int posY = 0; 55 for (unsigned i = 0; i < SK_ARRAY_COUNT(str); i++) { 56 posY += 100; 57 canvas->drawText(str[i], strlen(str[i]), SkIntToScalar(0), 58 SkIntToScalar(posY), textPaint); 59 } 60 canvas->restore(); 61 canvas->restore(); 62 } 63 } 64 } 65 66 private: 67 SkScalar fSigmaX; 68 SkScalar fSigmaY; 69 70 typedef GM INHERITED; 71 }; 72 73 ////////////////////////////////////////////////////////////////////////////// 74 75 static GM* MyFactory1(void*) { return new ImageBlurTiledGM(3.0f, 3.0f); } 76 static GMRegistry reg1(MyFactory1); 77 78 } 79
