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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/aura/window.h"
#include <algorithm>
#include "base/logging.h"
#include "ui/aura/desktop.h"
#include "ui/aura/event.h"
#include "ui/aura/event_filter.h"
#include "ui/aura/focus_manager.h"
#include "ui/aura/layout_manager.h"
#include "ui/aura/window_delegate.h"
#include "ui/gfx/canvas_skia.h"
#include "ui/gfx/compositor/compositor.h"
#include "ui/gfx/compositor/layer.h"
namespace aura {
Window::Window(WindowDelegate* delegate)
: delegate_(delegate),
visibility_(VISIBILITY_HIDDEN),
parent_(NULL),
id_(-1),
user_data_(NULL) {
}
Window::~Window() {
// Let the delegate know we're in the processing of destroying.
if (delegate_)
delegate_->OnWindowDestroying();
// Update the FocusManager in case we were focused. This must be done before
// we are removed from the hierarchy otherwise we won't be able to find the
// FocusManager.
internal::FocusManager* focus_manager = GetFocusManager();
if (focus_manager && focus_manager->focused_window() == this)
focus_manager->SetFocusedWindow(NULL);
// Then destroy the children.
while (!children_.empty()) {
Window* child = children_[0];
delete child;
// Deleting the child so remove it from out children_ list.
DCHECK(std::find(children_.begin(), children_.end(), child) ==
children_.end());
}
// And let the delegate do any post cleanup.
if (delegate_)
delegate_->OnWindowDestroyed();
if (parent_)
parent_->RemoveChild(this);
}
void Window::Init() {
ui::Layer::TextureParam param = ui::Layer::LAYER_HAS_NO_TEXTURE;
if (delegate_)
param = ui::Layer::LAYER_HAS_TEXTURE;
layer_.reset(new ui::Layer(Desktop::GetInstance()->compositor(), param));
layer_->set_delegate(this);
}
void Window::SetVisibility(Visibility visibility) {
if (visibility_ == visibility)
return;
visibility_ = visibility;
layer_->set_visible(visibility_ != VISIBILITY_HIDDEN);
if (layer_->visible())
SchedulePaint();
}
void Window::SetLayoutManager(LayoutManager* layout_manager) {
layout_manager_.reset(layout_manager);
}
void Window::SetBounds(const gfx::Rect& bounds, int anim_ms) {
// TODO: support anim_ms
// TODO: funnel this through the Desktop.
bool was_move = bounds_.size() == bounds.size();
gfx::Rect old_bounds = bounds_;
bounds_ = bounds;
layer_->SetBounds(bounds);
if (layout_manager_.get())
layout_manager_->OnWindowResized();
if (delegate_)
delegate_->OnBoundsChanged(old_bounds, bounds_);
if (was_move)
SchedulePaintInRect(gfx::Rect());
else
SchedulePaint();
}
void Window::SchedulePaintInRect(const gfx::Rect& rect) {
layer_->SchedulePaint(rect);
}
void Window::SetCanvas(const SkCanvas& canvas, const gfx::Point& origin) {
// TODO: figure out how this is going to work when animating the layer. In
// particular if we're animating the size then the underlying Texture is going
// to be unhappy if we try to set a texture on a size bigger than the size of
// the texture.
layer_->SetCanvas(canvas, origin);
}
void Window::SetParent(Window* parent) {
if (parent)
parent->AddChild(this);
else
Desktop::GetInstance()->toplevel_window_container()->AddChild(this);
}
bool Window::IsToplevelWindowContainer() const {
return false;
}
void Window::MoveChildToFront(Window* child) {
DCHECK_EQ(child->parent(), this);
const Windows::iterator i(std::find(children_.begin(), children_.end(),
child));
DCHECK(i != children_.end());
children_.erase(i);
// TODO(beng): this obviously has to handle different window types.
children_.insert(children_.begin() + children_.size(), child);
SchedulePaintInRect(gfx::Rect());
}
void Window::AddChild(Window* child) {
DCHECK(std::find(children_.begin(), children_.end(), child) ==
children_.end());
child->parent_ = this;
layer_->Add(child->layer_.get());
children_.push_back(child);
}
void Window::RemoveChild(Window* child) {
Windows::iterator i = std::find(children_.begin(), children_.end(), child);
DCHECK(i != children_.end());
child->parent_ = NULL;
layer_->Remove(child->layer_.get());
children_.erase(i);
}
// static
void Window::ConvertPointToWindow(Window* source,
Window* target,
gfx::Point* point) {
ui::Layer::ConvertPointToLayer(source->layer(), target->layer(), point);
}
void Window::SetEventFilter(EventFilter* event_filter) {
event_filter_.reset(event_filter);
}
bool Window::OnMouseEvent(MouseEvent* event) {
if (!parent_)
return false;
if (!parent_->event_filter_.get())
parent_->SetEventFilter(new EventFilter(parent_));
return parent_->event_filter_->OnMouseEvent(this, event) ||
delegate_->OnMouseEvent(event);
}
bool Window::OnKeyEvent(KeyEvent* event) {
return delegate_->OnKeyEvent(event);
}
bool Window::HitTest(const gfx::Point& point) {
gfx::Rect local_bounds(gfx::Point(), bounds().size());
// TODO(beng): hittest masks.
return local_bounds.Contains(point);
}
Window* Window::GetEventHandlerForPoint(const gfx::Point& point) {
Windows::const_reverse_iterator i = children_.rbegin();
for (; i != children_.rend(); ++i) {
Window* child = *i;
if (child->visibility() == Window::VISIBILITY_HIDDEN)
continue;
gfx::Point point_in_child_coords(point);
Window::ConvertPointToWindow(this, child, &point_in_child_coords);
if (child->HitTest(point_in_child_coords)) {
Window* handler = child->GetEventHandlerForPoint(point_in_child_coords);
if (handler)
return handler;
}
}
return delegate_ ? this : NULL;
}
internal::FocusManager* Window::GetFocusManager() {
return parent_ ? parent_->GetFocusManager() : NULL;
}
void Window::SchedulePaint() {
SchedulePaintInRect(gfx::Rect(0, 0, bounds_.width(), bounds_.height()));
}
void Window::OnPaintLayer(gfx::Canvas* canvas) {
delegate_->OnPaint(canvas);
}
} // namespace aura
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