1// Copyright 2013 The Flutter Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "flutter/flow/layers/shader_mask_layer.h"
6
7namespace flutter {
8
9ShaderMaskLayer::ShaderMaskLayer(sk_sp<SkShader> shader,
10 const SkRect& mask_rect,
11 SkBlendMode blend_mode)
12 : shader_(shader), mask_rect_(mask_rect), blend_mode_(blend_mode) {}
13
14void ShaderMaskLayer::Preroll(PrerollContext* context, const SkMatrix& matrix) {
15#if defined(LEGACY_FUCHSIA_EMBEDDER)
16 CheckForChildLayerBelow(context);
17#endif
18
19 Layer::AutoPrerollSaveLayerState save =
20 Layer::AutoPrerollSaveLayerState::Create(context);
21 ContainerLayer::Preroll(context, matrix);
22}
23
24void ShaderMaskLayer::Paint(PaintContext& context) const {
25 TRACE_EVENT0("flutter", "ShaderMaskLayer::Paint");
26 FML_DCHECK(needs_painting());
27
28 Layer::AutoSaveLayer save =
29 Layer::AutoSaveLayer::Create(context, paint_bounds(), nullptr);
30 PaintChildren(context);
31
32 SkPaint paint;
33 paint.setBlendMode(blend_mode_);
34 paint.setShader(shader_);
35 context.leaf_nodes_canvas->translate(mask_rect_.left(), mask_rect_.top());
36 context.leaf_nodes_canvas->drawRect(
37 SkRect::MakeWH(mask_rect_.width(), mask_rect_.height()), paint);
38}
39
40} // namespace flutter
41