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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY GOOGLE INC. AND ITS CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC.
* OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "third_party/blink/renderer/core/frame/frame_overlay.h"
#include <memory>
#include <utility>
#include "base/memory/ptr_util.h"
#include "cc/input/main_thread_scrolling_reason.h"
#include "cc/layers/picture_layer.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/visual_viewport.h"
#include "third_party/blink/renderer/core/layout/layout_view.h"
#include "third_party/blink/renderer/core/page/page.h"
#include "third_party/blink/renderer/core/page/scrolling/scrolling_coordinator.h"
#include "third_party/blink/renderer/core/paint/compositing/paint_layer_compositor.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/graphics_layer_client.h"
#include "third_party/blink/renderer/platform/graphics/paint/scoped_paint_chunk_properties.h"
namespace blink {
FrameOverlay::FrameOverlay(LocalFrame* local_frame,
std::unique_ptr<FrameOverlay::Delegate> delegate)
: frame_(local_frame), delegate_(std::move(delegate)) {
DCHECK(frame_);
}
void FrameOverlay::UpdatePrePaint() {
// Invalidate DisplayItemClient.
Invalidate();
if (RuntimeEnabledFeatures::CompositeAfterPaintEnabled()) {
delegate_->Invalidate();
return;
}
auto* parent_layer = frame_->LocalFrameRoot()
.View()
->GetLayoutView()
->Compositor()
->PaintRootGraphicsLayer();
if (!parent_layer) {
layer_ = nullptr;
return;
}
if (!layer_) {
layer_ = std::make_unique<GraphicsLayer>(*this);
layer_->SetDrawsContent(true);
layer_->SetHitTestable(false);
}
DCHECK(parent_layer);
if (layer_->Parent() != parent_layer ||
// Keep the layer the last child of parent to make it topmost.
parent_layer->Children().back() != layer_.get())
parent_layer->AddChild(layer_.get());
layer_->SetLayerState(DefaultPropertyTreeState(), IntPoint());
layer_->SetSize(gfx::Size(Size()));
}
IntSize FrameOverlay::Size() const {
if (frame_->IsMainFrame())
return frame_->GetPage()->GetVisualViewport().Size();
return frame_->GetPage()->GetVisualViewport().Size().ExpandedTo(
frame_->View()->Size());
}
IntRect FrameOverlay::ComputeInterestRect(const GraphicsLayer* graphics_layer,
const IntRect&) const {
DCHECK(!RuntimeEnabledFeatures::CompositeAfterPaintEnabled());
DCHECK(!RuntimeEnabledFeatures::CullRectUpdateEnabled());
return IntRect(IntPoint(), Size());
}
IntRect FrameOverlay::PaintableRegion(
const GraphicsLayer* graphics_layer) const {
DCHECK(!RuntimeEnabledFeatures::CompositeAfterPaintEnabled());
DCHECK(RuntimeEnabledFeatures::CullRectUpdateEnabled());
return IntRect(IntPoint(), Size());
}
void FrameOverlay::PaintContents(const GraphicsLayer* graphics_layer,
GraphicsContext& context,
GraphicsLayerPaintingPhase phase,
const IntRect& interest_rect) const {
DCHECK(!RuntimeEnabledFeatures::CompositeAfterPaintEnabled());
DCHECK_EQ(graphics_layer, layer_.get());
DCHECK_EQ(DefaultPropertyTreeState(), layer_->GetPropertyTreeState());
Paint(context);
}
void FrameOverlay::GraphicsLayersDidChange() {
frame_->View()->SetPaintArtifactCompositorNeedsUpdate();
}
void FrameOverlay::ServiceScriptedAnimations(
base::TimeTicks monotonic_frame_begin_time) {
delegate_->ServiceScriptedAnimations(monotonic_frame_begin_time);
}
String FrameOverlay::DebugName(const GraphicsLayer*) const {
DCHECK(!RuntimeEnabledFeatures::CompositeAfterPaintEnabled());
return "Frame Overlay Content Layer";
}
void FrameOverlay::Paint(GraphicsContext& context) const {
ScopedPaintChunkProperties properties(context.GetPaintController(),
DefaultPropertyTreeState(), *this,
DisplayItem::kFrameOverlay);
delegate_->PaintFrameOverlay(*this, context, Size());
}
PropertyTreeState FrameOverlay::DefaultPropertyTreeState() const {
auto state = PropertyTreeState::Root();
if (frame_->IsMainFrame()) {
if (const auto* device_emulation = frame_->GetPage()
->GetVisualViewport()
.GetDeviceEmulationTransformNode())
state.SetTransform(*device_emulation);
}
return state;
}
} // namespace blink
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