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// Copyright 2015 The Chromium Authors
// 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/traced_value.h"
#include "components/exo/sub_surface_observer.h"
#include "components/exo/surface.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/gfx/geometry/point_f.h"
namespace exo {
////////////////////////////////////////////////////////////////////////////////
// SubSurface, public:
SubSurface::SubSurface(Surface* surface, Surface* parent)
: surface_(surface), parent_(parent) {
surface_->SetSurfaceDelegate(this);
surface_->AddSurfaceObserver(this);
parent_->AddSurfaceObserver(this);
parent_->AddSubSurface(surface_);
}
SubSurface::~SubSurface() {
for (SubSurfaceObserver& observer : observers_)
observer.OnSubSurfaceDestroying(this);
if (surface_) {
if (parent_)
parent_->RemoveSubSurface(surface_);
surface_->SetSurfaceDelegate(nullptr);
surface_->RemoveSurfaceObserver(this);
}
if (parent_)
parent_->RemoveSurfaceObserver(this);
// Destroying a sub-surface takes effect immediately.
if (surface_ && parent_ && !surface_->is_augmented()) {
parent_->OnSubSurfaceCommit();
}
}
void SubSurface::SetPosition(const gfx::PointF& position) {
TRACE_EVENT1("exo", "SubSurface::SetPosition", "position",
position.ToString());
if (!parent_ || !surface_)
return;
parent_->SetSubSurfacePosition(surface_, position);
}
void SubSurface::SetTransform(const gfx::Transform& transform) {
TRACE_EVENT1("exo", "SubSurface::SetTransform", "transform",
transform.ToString());
if (!parent_ || !surface_)
return;
surface_->SetSurfaceTransform(transform);
}
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_ = surface_->is_augmented() || synchronized;
}
std::unique_ptr<base::trace_event::TracedValue> SubSurface::AsTracedValue()
const {
std::unique_ptr<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;
if (parent_)
parent_->OnSubSurfaceCommit();
}
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();
}
bool SubSurface::IsInputEnabled(Surface* surface) const {
return !parent_ || parent_->IsInputEnabled(surface);
}
void SubSurface::OnSetParent(Surface* parent, const gfx::Point&) {
if (parent->window()->GetProperty(aura::client::kSkipImeProcessing))
surface_->window()->SetProperty(aura::client::kSkipImeProcessing, true);
}
SecurityDelegate* SubSurface::GetSecurityDelegate() {
if (parent_)
return parent_->GetSecurityDelegate();
return nullptr;
}
////////////////////////////////////////////////////////////////////////////////
// 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;
}
////////////////////////////////////////////////////////////////////////////////
// SubSurface Observers
void SubSurface::AddSubSurfaceObserver(SubSurfaceObserver* observer) {
observers_.AddObserver(observer);
}
void SubSurface::RemoveSubSurfaceObserver(SubSurfaceObserver* observer) {
observers_.RemoveObserver(observer);
}
} // namespace exo
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