xref: /third_party/skia/docs/examples/blurbug.cpp (revision cb93a386)
1// Copyright 2020 Google LLC.
2// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3#include "tools/fiddle/examples.h"
4REG_FIDDLE(blurbug, 256, 256, false, 0) {
5void draw(SkCanvas* canvas) {
6    uint8_t pixels[][8] = {{0x00, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0x00},
7                           {0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00},
8                           {0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00},
9                           {0xFF, 0xFF, 0x00, 0xFF, 0xFF, 0x00, 0xFF, 0xFF},
10                           {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
11                           {0x00, 0x00, 0xFF, 0x00, 0x00, 0xFF, 0x00, 0x00},
12                           {0x00, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xFF, 0x00},
13                           {0x00, 0x00, 0xFF, 0x00, 0x00, 0xFF, 0x00, 0x00}};
14    SkBitmap bitmap;
15    bitmap.installPixels(SkImageInfo::MakeA8(8, 8), (void*)pixels, sizeof(pixels[0]));
16    SkPaint paint;
17    paint.setMaskFilter(SkMaskFilter::MakeBlur(kSolid_SkBlurStyle, 3));
18    for (auto color : {SK_ColorRED, SK_ColorBLUE, 0xFF007F00}) {
19        paint.setColor(color);
20        canvas->drawImageRect(bitmap.asImage(), SkRect::MakeWH(8, 8), SkRect::MakeWH(32, 32),
21                              SkSamplingOptions(), &paint,
22                              SkCanvas::kStrict_SrcRectConstraint);
23        canvas->translate(48, 0);
24    }
25}
26}  // END FIDDLE
27