blob: 157354f7314b464d912732ad907d076819066994 [file] [log] [blame]
// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "flutter/flow/layers/shader_mask_layer.h"
namespace flutter {
ShaderMaskLayer::ShaderMaskLayer(sk_sp<SkShader> shader,
const SkRect& mask_rect,
SkBlendMode blend_mode)
: shader_(shader), mask_rect_(mask_rect), blend_mode_(blend_mode) {}
void ShaderMaskLayer::Preroll(PrerollContext* context, const SkMatrix& matrix) {
Layer::AutoPrerollSaveLayerState save =
Layer::AutoPrerollSaveLayerState::Create(context);
ContainerLayer::Preroll(context, matrix);
}
void ShaderMaskLayer::Paint(PaintContext& context) const {
TRACE_EVENT0("flutter", "ShaderMaskLayer::Paint");
FML_DCHECK(needs_painting());
Layer::AutoSaveLayer save =
Layer::AutoSaveLayer::Create(context, paint_bounds(), nullptr);
PaintChildren(context);
SkPaint paint;
paint.setBlendMode(blend_mode_);
paint.setShader(shader_);
context.leaf_nodes_canvas->translate(mask_rect_.left(), mask_rect_.top());
context.leaf_nodes_canvas->drawRect(
SkRect::MakeWH(mask_rect_.width(), mask_rect_.height()), paint);
}
} // namespace flutter