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// Copyright (c) 2011 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 "ui/gfx/compositor/compositor.h"
#include "ui/gfx/compositor/compositor_observer.h"
#include "ui/gfx/compositor/layer.h"
namespace ui {
TextureDrawParams::TextureDrawParams()
: blend(false),
has_valid_alpha_channel(false),
opacity(1.0f),
vertically_flipped(false) {
}
Compositor::Compositor(CompositorDelegate* delegate, const gfx::Size& size)
: delegate_(delegate),
size_(size),
root_layer_(NULL) {
}
Compositor::~Compositor() {
}
void Compositor::ScheduleDraw() {
delegate_->ScheduleDraw();
}
void Compositor::SetRootLayer(Layer* root_layer) {
root_layer_ = root_layer;
if (!root_layer_->GetCompositor())
root_layer_->SetCompositor(this);
OnRootLayerChanged();
}
void Compositor::Draw(bool force_clear) {
if (!root_layer_)
return;
NotifyStart(force_clear);
DrawTree();
NotifyEnd();
}
void Compositor::AddObserver(CompositorObserver* observer) {
observer_list_.AddObserver(observer);
}
void Compositor::RemoveObserver(CompositorObserver* observer) {
observer_list_.RemoveObserver(observer);
}
bool Compositor::HasObserver(CompositorObserver* observer) {
return observer_list_.HasObserver(observer);
}
void Compositor::OnRootLayerChanged() {
ScheduleDraw();
}
void Compositor::DrawTree() {
root_layer_->DrawTree();
}
void Compositor::NotifyStart(bool clear) {
OnNotifyStart(clear);
}
void Compositor::NotifyEnd() {
OnNotifyEnd();
FOR_EACH_OBSERVER(CompositorObserver,
observer_list_,
OnCompositingEnded(this));
}
} // namespace ui
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