xref: /third_party/skia/docs/examples/Clip.cpp (revision cb93a386)
1// Copyright 2019 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// HASH=862cc026601a41a58df49c0b9f0d7777
5REG_FIDDLE(Clip, 256, 90, false, 0) {
6void draw(SkCanvas* canvas) {
7    SkPaint redPaint, scalePaint;
8    redPaint.setAntiAlias(true);
9    redPaint.setColor(SK_ColorRED);
10    canvas->save();
11    for (bool antialias : { false, true } ) {
12        canvas->save();
13        canvas->clipRect(SkRect::MakeWH(19.5f, 11.5f), antialias);
14        canvas->drawCircle(17, 11, 8, redPaint);
15        canvas->restore();
16        canvas->translate(16, 0);
17    }
18    canvas->restore();
19    SkMatrix matrix;
20    matrix.setScale(6, 6);
21    scalePaint.setImageFilter(
22            SkImageFilters::MatrixTransform(matrix, SkSamplingOptions(), nullptr));
23    SkCanvas::SaveLayerRec saveLayerRec(
24            nullptr, &scalePaint, SkCanvas::kInitWithPrevious_SaveLayerFlag);
25    canvas->saveLayer(saveLayerRec);
26    canvas->restore();
27}
28}  // END FIDDLE
29