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// Copyright 2015 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 "components/exo/sub_surface.h"
#include "base/logging.h"
#include "base/trace_event/trace_event.h"
#include "base/trace_event/trace_event_argument.h"
#include "components/exo/surface.h"
namespace exo {
////////////////////////////////////////////////////////////////////////////////
// SubSurface, public:
SubSurface::SubSurface(Surface* surface, Surface* parent)
: surface_(surface), parent_(parent), is_synchronized_(true) {
surface_->SetSurfaceDelegate(this);
surface_->AddSurfaceObserver(this);
parent_->AddSurfaceObserver(this);
parent_->AddSubSurface(surface_);
}
SubSurface::~SubSurface() {
if (surface_) {
if (parent_)
parent_->RemoveSubSurface(surface_);
surface_->SetSurfaceDelegate(nullptr);
surface_->RemoveSurfaceObserver(this);
}
if (parent_)
parent_->RemoveSurfaceObserver(this);
}
void SubSurface::SetPosition(const gfx::Point& position) {
TRACE_EVENT1("exo", "SubSurface::SetPosition", "position",
position.ToString());
if (!parent_ || !surface_)
return;
parent_->SetSubSurfacePosition(surface_, position);
}
void SubSurface::PlaceAbove(Surface* reference) {
TRACE_EVENT1("exo", "SubSurface::PlaceAbove", "reference",
reference->AsTracedValue());
if (!parent_ || !surface_)
return;
if (reference == surface_) {
DLOG(WARNING) << "Client tried to place sub-surface above itself";
return;
}
parent_->PlaceSubSurfaceAbove(surface_, reference);
}
void SubSurface::PlaceBelow(Surface* sibling) {
TRACE_EVENT1("exo", "SubSurface::PlaceBelow", "sibling",
sibling->AsTracedValue());
if (!parent_ || !surface_)
return;
if (sibling == surface_) {
DLOG(WARNING) << "Client tried to place sub-surface below itself";
return;
}
parent_->PlaceSubSurfaceBelow(surface_, sibling);
}
void SubSurface::SetCommitBehavior(bool synchronized) {
TRACE_EVENT1("exo", "SubSurface::SetCommitBehavior", "synchronized",
synchronized);
is_synchronized_ = synchronized;
}
scoped_refptr<base::trace_event::TracedValue> SubSurface::AsTracedValue()
const {
scoped_refptr<base::trace_event::TracedValue> value =
new base::trace_event::TracedValue;
value->SetBoolean("is_synchronized", is_synchronized_);
return value;
}
////////////////////////////////////////////////////////////////////////////////
// SurfaceDelegate overrides:
void SubSurface::OnSurfaceCommit() {
// Early out if commit should be synchronized with parent.
if (IsSurfaceSynchronized())
return;
surface_->CommitSurfaceHierarchy();
}
bool SubSurface::IsSurfaceSynchronized() const {
// A sub-surface is effectively synchronized if either its parent is
// synchronized or itself is in synchronized mode.
if (is_synchronized_)
return true;
return parent_ ? parent_->IsSynchronized() : false;
}
////////////////////////////////////////////////////////////////////////////////
// SurfaceObserver overrides:
void SubSurface::OnSurfaceDestroying(Surface* surface) {
surface->RemoveSurfaceObserver(this);
if (surface == parent_) {
parent_ = nullptr;
return;
}
DCHECK(surface == surface_);
if (parent_)
parent_->RemoveSubSurface(surface_);
surface_ = nullptr;
}
} // namespace exo
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