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| 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: |
| 23 ImageFiltersStrokedGM() { |
| 24 this->setBGColor(0x00000000); |
| 25 } |
| 26 |
| 27 protected: |
| 28 |
| 29 SkString onShortName() override { |
| 30 return SkString("imagefiltersstroked"); |
| 31 } |
| 32 |
| 33 SkISize onISize() override { |
| 34 return SkISize::Make(860, 500); |
| 35 } |
| 36 |
| 37 static void draw_circle(SkCanvas* canvas, const SkRect& r, const SkPaint& pa
int) { |
| 38 canvas->drawCircle(r.centerX(), r.centerY(), |
| 39 r.width() * 2 / 5, paint); |
| 40 } |
| 41 |
| 42 static void draw_line(SkCanvas* canvas, const SkRect& r, const SkPaint& pain
t) { |
| 43 canvas->drawLine(r.fLeft, r.fBottom, r.fRight, r.fTop, paint); |
| 44 } |
| 45 |
| 46 static void draw_rect(SkCanvas* canvas, const SkRect& r, const SkPaint& pain
t) { |
| 47 canvas->drawRect(r, paint); |
| 48 } |
| 49 |
| 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_SkFilterQualit
y), |
| 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 } |
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