1 /* 2 * Copyright 2015 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 "sk_tool_utils.h" 9 #include "SkBlurImageFilter.h" 10 #include "SkColor.h" 11 #include "SkDropShadowImageFilter.h" 12 #include "SkOffsetImageFilter.h" 13 #include "SkScalar.h" 14 #include "gm.h" 15 16 #define RESIZE_FACTOR_X SkIntToScalar(2) 17 #define RESIZE_FACTOR_Y SkIntToScalar(5) 18 19 namespace skiagm { 20 21 class ImageFiltersStrokedGM : public GM { 22 public: ImageFiltersStrokedGM()23 ImageFiltersStrokedGM() { 24 this->setBGColor(0x00000000); 25 } 26 27 protected: 28 onShortName()29 SkString onShortName() override { 30 return SkString("imagefiltersstroked"); 31 } 32 onISize()33 SkISize onISize() override { 34 return SkISize::Make(860, 500); 35 } 36 draw_circle(SkCanvas * canvas,const SkRect & r,const SkPaint & paint)37 static void draw_circle(SkCanvas* canvas, const SkRect& r, const SkPaint& paint) { 38 canvas->drawCircle(r.centerX(), r.centerY(), 39 r.width() * 2 / 5, paint); 40 } 41 draw_line(SkCanvas * canvas,const SkRect & r,const SkPaint & paint)42 static void draw_line(SkCanvas* canvas, const SkRect& r, const SkPaint& paint) { 43 canvas->drawLine(r.fLeft, r.fBottom, r.fRight, r.fTop, paint); 44 } 45 draw_rect(SkCanvas * canvas,const SkRect & r,const SkPaint & paint)46 static void draw_rect(SkCanvas* canvas, const SkRect& r, const SkPaint& paint) { 47 canvas->drawRect(r, paint); 48 } 49 onDraw(SkCanvas * canvas)50 void onDraw(SkCanvas* canvas) override { 51 void (*drawProc[])(SkCanvas*, const SkRect&, const SkPaint&) = { 52 draw_line, draw_rect, draw_circle, 53 }; 54 55 canvas->clear(SK_ColorBLACK); 56 57 SkMatrix resizeMatrix; 58 resizeMatrix.setScale(RESIZE_FACTOR_X, RESIZE_FACTOR_Y); 59 60 SkImageFilter* filters[] = { 61 SkBlurImageFilter::Create(5, 5), 62 SkDropShadowImageFilter::Create(10, 10, 3, 3, SK_ColorGREEN, 63 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode), 64 SkOffsetImageFilter::Create(-16, 32), 65 SkImageFilter::CreateMatrixFilter(resizeMatrix, kNone_SkFilterQuality), 66 }; 67 68 SkRect r = SkRect::MakeWH(64, 64); 69 SkScalar margin = 32; 70 SkPaint paint; 71 paint.setColor(SK_ColorWHITE); 72 paint.setAntiAlias(true); 73 paint.setStrokeWidth(10); 74 paint.setStyle(SkPaint::kStroke_Style); 75 paint.setTextSize(48); 76 paint.setTextAlign(SkPaint::kCenter_Align); 77 78 for (size_t i = 0; i < SK_ARRAY_COUNT(drawProc); ++i) { 79 canvas->translate(0, margin); 80 canvas->save(); 81 for (size_t j = 0; j < SK_ARRAY_COUNT(filters); ++j) { 82 canvas->translate(margin, 0); 83 canvas->save(); 84 if (2 == j) { 85 canvas->translate(16, -32); 86 } else if (3 == j) { 87 canvas->scale(SkScalarInvert(RESIZE_FACTOR_X), 88 SkScalarInvert(RESIZE_FACTOR_Y)); 89 } 90 paint.setImageFilter(filters[j]); 91 drawProc[i](canvas, r, paint); 92 canvas->restore(); 93 canvas->translate(r.width() + margin, 0); 94 } 95 canvas->restore(); 96 canvas->translate(0, r.height()); 97 } 98 99 for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) { 100 SkSafeUnref(filters[i]); 101 } 102 } 103 104 private: 105 typedef GM INHERITED; 106 }; 107 108 ////////////////////////////////////////////////////////////////////////////// 109 110 DEF_GM(return new ImageFiltersStrokedGM;) 111 112 } 113