submodule/skia/docs/examples/backdrop_blur_with_rrect_clip.cpp

   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"
   4 REG_FIDDLE(backdrop_blur_with_rrect_clip, 512, 512, false, 3) {
   5 void draw(SkCanvas* canvas) {
   6     const SkRect r = SkRect::MakeXYWH(128, 128, 256, 256);
   7     const SkRRect rr = SkRRect::MakeRectXY(r, 128, 128);
   8
   9     canvas->drawImage(image, 0, 0);
  10
  11     canvas->save();
  12     canvas->clipRRect(rr, true);
  13
  14     sk_sp<SkImageFilter> filter = SkImageFilters::Blur(10, 10, nullptr);
  15     SkPaint p;
  16     p.setImageFilter(std::move(filter));
  17
  18     SkCanvas::SaveLayerRec slr(&r, &p, SkCanvas::kInitWithPrevious_SaveLayerFlag);
  19     canvas->saveLayer(slr);
  20     canvas->drawColor(0x40FFFFFF);
  21     canvas->restore();
  22     canvas->restore();
  23 }
  24 }  // END FIDDLE