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// Copyright 2016 The Chromium 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 "third_party/blink/renderer/platform/graphics/paint/foreign_layer_display_item.h"
#include <utility>
#include "cc/layers/layer.h"
#include "cc/layers/picture_layer.h"
#include "third_party/blink/renderer/platform/graphics/compositing/layers_as_json.h"
#include "third_party/blink/renderer/platform/graphics/graphics_context.h"
#include "third_party/blink/renderer/platform/graphics/graphics_layer.h"
#include "third_party/blink/renderer/platform/graphics/paint/paint_controller.h"
#include "third_party/blink/renderer/platform/wtf/assertions.h"
namespace blink {
ForeignLayerDisplayItem::ForeignLayerDisplayItem(
const DisplayItemClient& client,
Type type,
scoped_refptr<cc::Layer> layer,
const IntPoint& offset)
: DisplayItem(client,
type,
sizeof(*this),
IntRect(offset, IntSize(layer->bounds()))),
offset_(offset),
layer_(std::move(layer)) {
DCHECK(IsForeignLayerType(type));
}
bool ForeignLayerDisplayItem::Equals(const DisplayItem& other) const {
return DisplayItem::Equals(other) &&
GetLayer() ==
static_cast<const ForeignLayerDisplayItem&>(other).GetLayer();
}
#if DCHECK_IS_ON()
void ForeignLayerDisplayItem::PropertiesAsJSON(JSONObject& json) const {
DisplayItem::PropertiesAsJSON(json);
json.SetInteger("layer", GetLayer()->id());
json.SetDouble("offset_x", Offset().X());
json.SetDouble("offset_y", Offset().Y());
}
#endif
void RecordForeignLayer(GraphicsContext& context,
const DisplayItemClient& client,
DisplayItem::Type type,
scoped_refptr<cc::Layer> layer,
const IntPoint& offset,
const PropertyTreeStateOrAlias* properties) {
PaintController& paint_controller = context.GetPaintController();
// This is like ScopedPaintChunkProperties but uses null id because foreign
// layer chunk doesn't need an id nor a client.
base::Optional<PropertyTreeStateOrAlias> previous_properties;
if (properties) {
previous_properties.emplace(paint_controller.CurrentPaintChunkProperties());
paint_controller.UpdateCurrentPaintChunkProperties(nullptr, *properties);
}
paint_controller.CreateAndAppend<ForeignLayerDisplayItem>(
client, type, std::move(layer), offset);
if (properties) {
paint_controller.UpdateCurrentPaintChunkProperties(nullptr,
*previous_properties);
}
}
} // namespace blink
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