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// Copyright 2014 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 "ash/wm/panels/attached_panel_window_targeter.h"
#include "ash/shelf/shelf.h"
#include "ash/shell.h"
#include "ash/wm/panels/panel_layout_manager.h"
namespace ash {
AttachedPanelWindowTargeter::AttachedPanelWindowTargeter(
aura::Window* container,
const gfx::Insets& default_mouse_extend,
const gfx::Insets& default_touch_extend,
PanelLayoutManager* panel_layout_manager)
: ::wm::EasyResizeWindowTargeter(container,
default_mouse_extend,
default_touch_extend),
panel_container_(container),
panel_layout_manager_(panel_layout_manager),
default_touch_extend_(default_touch_extend) {
Shell::GetInstance()->AddShellObserver(this);
}
AttachedPanelWindowTargeter::~AttachedPanelWindowTargeter() {
Shell::GetInstance()->RemoveShellObserver(this);
}
void AttachedPanelWindowTargeter::OnShelfCreatedForRootWindow(
aura::Window* root_window) {
UpdateTouchExtend(root_window);
}
void AttachedPanelWindowTargeter::OnShelfAlignmentChanged(
aura::Window* root_window) {
// Don't update the touch insets if the shelf has not yet been created.
if (!panel_layout_manager_->shelf())
return;
UpdateTouchExtend(root_window);
}
void AttachedPanelWindowTargeter::UpdateTouchExtend(aura::Window* root_window) {
// Only update the touch insets for panels if they are attached to the shelf
// in |root_window|.
if (panel_container_->GetRootWindow() != root_window)
return;
DCHECK(panel_layout_manager_->shelf());
gfx::Insets touch(default_touch_extend_);
switch (panel_layout_manager_->shelf()->alignment()) {
case SHELF_ALIGNMENT_BOTTOM:
touch = gfx::Insets(touch.top(), touch.left(), 0, touch.right());
break;
case SHELF_ALIGNMENT_LEFT:
touch = gfx::Insets(touch.top(), 0, touch.bottom(), touch.right());
break;
case SHELF_ALIGNMENT_RIGHT:
touch = gfx::Insets(touch.top(), touch.left(), touch.bottom(), 0);
break;
case SHELF_ALIGNMENT_TOP:
touch = gfx::Insets(0, touch.left(), touch.bottom(), touch.right());
break;
default:
NOTREACHED();
return;
}
set_touch_extend(touch);
}
} // namespace ash
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