xref: /aosp_15_r20/external/skia/docs/examples/Canvas_kInitWithPrevious_SaveLayerFlag.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1*c8dee2aaSAndroid Build Coastguard Worker // Copyright 2019 Google LLC.
2*c8dee2aaSAndroid Build Coastguard Worker // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3*c8dee2aaSAndroid Build Coastguard Worker #include "tools/fiddle/examples.h"
4*c8dee2aaSAndroid Build Coastguard Worker REG_FIDDLE(Canvas_kInitWithPrevious_SaveLayerFlag, 256, 160, false, 0) {
draw(SkCanvas * canvas)5*c8dee2aaSAndroid Build Coastguard Worker void draw(SkCanvas* canvas) {
6*c8dee2aaSAndroid Build Coastguard Worker     SkPaint redPaint, bluePaint, scalePaint;
7*c8dee2aaSAndroid Build Coastguard Worker     redPaint.setColor(SK_ColorRED);
8*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawCircle(21, 21, 8, redPaint);
9*c8dee2aaSAndroid Build Coastguard Worker     bluePaint.setColor(SK_ColorBLUE);
10*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawCircle(31, 21, 8, bluePaint);
11*c8dee2aaSAndroid Build Coastguard Worker     SkMatrix matrix;
12*c8dee2aaSAndroid Build Coastguard Worker     matrix.setScale(4, 4);
13*c8dee2aaSAndroid Build Coastguard Worker     scalePaint.setAlpha(0x40);
14*c8dee2aaSAndroid Build Coastguard Worker     scalePaint.setImageFilter(
15*c8dee2aaSAndroid Build Coastguard Worker             SkImageFilters::MatrixTransform(matrix, SkSamplingOptions(), nullptr));
16*c8dee2aaSAndroid Build Coastguard Worker     SkCanvas::SaveLayerRec saveLayerRec(nullptr, &scalePaint,
17*c8dee2aaSAndroid Build Coastguard Worker             SkCanvas::kInitWithPrevious_SaveLayerFlag);
18*c8dee2aaSAndroid Build Coastguard Worker     canvas->saveLayer(saveLayerRec);
19*c8dee2aaSAndroid Build Coastguard Worker     canvas->restore();
20*c8dee2aaSAndroid Build Coastguard Worker }
21*c8dee2aaSAndroid Build Coastguard Worker }  // END FIDDLE
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