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=be9574c4a14f891e1abb4ec2b1e51d6c
5REG_FIDDLE(Surface_notifyContentWillChange, 256, 256, true, 0) {
6void draw(SkCanvas* canvas) {
7    auto surface = SkSurface::MakeRasterN32Premul(1, 1);
8    for (int i = 0; i < 3; ++i) {
9        SkDebugf("surface generationID: %d\n", surface->generationID());
10        if (0 == i) {
11            surface->getCanvas()->drawColor(SK_ColorBLACK);
12        } else {
13            surface->notifyContentWillChange(SkSurface::kDiscard_ContentChangeMode);
14        }
15    }
16}
17}  // END FIDDLE
18