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| 1 /* |
| 2 * Copyright 2013 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 "SkTileImageFilter.h" |
| 10 #include "SkBitmapSource.h" |
| 11 |
| 12 #define WIDTH 400 |
| 13 #define HEIGHT 100 |
| 14 #define MARGIN 12 |
| 15 |
| 16 namespace skiagm { |
| 17 |
| 18 class TileImageFilterGM : public GM { |
| 19 public: |
| 20 TileImageFilterGM() : fInitialized(false) { |
| 21 this->setBGColor(0xFF000000); |
| 22 } |
| 23 |
| 24 protected: |
| 25 virtual SkString onShortName() { |
| 26 return SkString("tileimagefilter"); |
| 27 } |
| 28 |
| 29 void make_bitmap() { |
| 30 fBitmap.setConfig(SkBitmap::kARGB_8888_Config, 80, 80); |
| 31 fBitmap.allocPixels(); |
| 32 SkBitmapDevice device(fBitmap); |
| 33 SkCanvas canvas(&device); |
| 34 canvas.clear(0x00000000); |
| 35 SkPaint paint; |
| 36 paint.setAntiAlias(true); |
| 37 paint.setColor(0xD000D000); |
| 38 paint.setTextSize(SkIntToScalar(96)); |
| 39 const char* str = "e"; |
| 40 canvas.drawText(str, strlen(str), SkIntToScalar(15), SkIntToScalar(65),
paint); |
| 41 } |
| 42 |
| 43 void make_checkerboard() { |
| 44 fCheckerboard.setConfig(SkBitmap::kARGB_8888_Config, 80, 80); |
| 45 fCheckerboard.allocPixels(); |
| 46 SkBitmapDevice device(fCheckerboard); |
| 47 SkCanvas canvas(&device); |
| 48 canvas.clear(0x00000000); |
| 49 SkPaint darkPaint; |
| 50 darkPaint.setColor(0xFF404040); |
| 51 SkPaint lightPaint; |
| 52 lightPaint.setColor(0xFFA0A0A0); |
| 53 for (int y = 0; y < 80; y += 16) { |
| 54 for (int x = 0; x < 80; x += 16) { |
| 55 canvas.save(); |
| 56 canvas.translate(SkIntToScalar(x), SkIntToScalar(y)); |
| 57 canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint); |
| 58 canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint); |
| 59 canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint); |
| 60 canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint); |
| 61 canvas.restore(); |
| 62 } |
| 63 } |
| 64 } |
| 65 |
| 66 virtual SkISize onISize() { |
| 67 return make_isize(WIDTH, HEIGHT); |
| 68 } |
| 69 |
| 70 void drawClippedBitmap(SkCanvas* canvas, const SkBitmap& bitmap, const SkPai
nt& paint, |
| 71 SkScalar x, SkScalar y) { |
| 72 canvas->save(); |
| 73 canvas->clipRect(SkRect::MakeXYWH(x, y, |
| 74 SkIntToScalar(bitmap.width()), SkIntToScalar(bitmap.height()))); |
| 75 canvas->drawBitmap(bitmap, x, y, &paint); |
| 76 canvas->restore(); |
| 77 } |
| 78 |
| 79 virtual void onDraw(SkCanvas* canvas) { |
| 80 if (!fInitialized) { |
| 81 make_bitmap(); |
| 82 make_checkerboard(); |
| 83 fInitialized = true; |
| 84 } |
| 85 canvas->clear(0x00000000); |
| 86 SkPaint paint; |
| 87 |
| 88 int x = 0, y = 0; |
| 89 for (size_t i = 0; i < 4; i++) { |
| 90 SkBitmap* bitmap = (i & 0x01) ? &fCheckerboard : &fBitmap; |
| 91 SkRect srcRect = SkRect::MakeXYWH(SkIntToScalar(bitmap->width()/4), |
| 92 SkIntToScalar(bitmap->height()/4), |
| 93 SkIntToScalar(bitmap->width()/(i+1
)), |
| 94 SkIntToScalar(bitmap->height()/(i+
1))); |
| 95 SkRect dstRect = SkRect::MakeXYWH(SkIntToScalar(i * 8), |
| 96 SkIntToScalar(i * 4), |
| 97 SkIntToScalar(bitmap->width() - i
* 4), |
| 98 SkIntToScalar(bitmap->height()) -
i * 8); |
| 99 SkAutoTUnref<SkImageFilter> tileInput(SkNEW_ARGS(SkBitmapSource, (*b
itmap))); |
| 100 SkAutoTUnref<SkImageFilter> filter(SkNEW_ARGS( |
| 101 SkTileImageFilter, (srcRect, dstRect, tileInput))); |
| 102 paint.setImageFilter(filter); |
| 103 drawClippedBitmap(canvas, *bitmap, paint, SkIntToScalar(x), SkIntToS
calar(y)); |
| 104 x += bitmap->width() + MARGIN; |
| 105 if (x + bitmap->width() > WIDTH) { |
| 106 x = 0; |
| 107 y += bitmap->height() + MARGIN; |
| 108 } |
| 109 } |
| 110 } |
| 111 private: |
| 112 typedef GM INHERITED; |
| 113 SkBitmap fBitmap, fCheckerboard; |
| 114 bool fInitialized; |
| 115 }; |
| 116 |
| 117 ////////////////////////////////////////////////////////////////////////////// |
| 118 |
| 119 static GM* MyFactory(void*) { return new TileImageFilterGM; } |
| 120 static GMRegistry reg(MyFactory); |
| 121 |
| 122 } |
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