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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 "views/layer_helper.h"
#include "views/layer_property_setter.h"
#include "ui/gfx/compositor/layer.h"
#include "ui/gfx/transform.h"
namespace views {
namespace internal {
LayerHelper::LayerHelper()
: bitmap_needs_updating_(true),
fills_bounds_opaquely_(false),
layer_updated_externally_(false),
paint_to_layer_(false),
property_setter_explicitly_set_(false),
needs_paint_all_(true) {
}
LayerHelper::~LayerHelper() {
if (property_setter_.get() && layer_.get())
property_setter_->Uninstalled(layer_.get());
property_setter_.reset();
layer_.reset();
}
void LayerHelper::SetTransform(const ui::Transform& transform) {
transform_.reset(transform.HasChange() ? new ui::Transform(transform) : NULL);
}
void LayerHelper::SetLayer(ui::Layer* layer) {
if (property_setter_.get() && this->layer())
property_setter_->Uninstalled(this->layer());
layer_.reset(layer);
if (layer) {
if (!property_setter_.get())
property_setter_.reset(LayerPropertySetter::CreateDefaultSetter());
property_setter_->Installed(this->layer());
} else if (!property_setter_explicitly_set_) {
property_setter_.reset(NULL);
}
}
void LayerHelper::SetPropertySetter(LayerPropertySetter* setter) {
if (property_setter_.get() && layer())
property_setter_->Uninstalled(layer());
property_setter_.reset(setter);
if (layer()) {
if (!setter)
property_setter_.reset(LayerPropertySetter::CreateDefaultSetter());
property_setter_->Installed(layer());
}
}
bool LayerHelper::ShouldPaintToLayer() const {
return paint_to_layer_ || (transform_.get() && transform_->HasChange());
}
} // namespace internal
} // namespace views
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