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// Copyright (c) 2012 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/toplevel_layout_manager.h"
#include "ash/wm/shelf_layout_manager.h"
#include "ash/wm/window_animations.h"
#include "ash/wm/window_util.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/aura/window.h"
#include "ui/gfx/screen.h"
namespace {
// Minimum number of pixels at the window top to keep visible on screen.
const int kMinimumWindowTopVisible = 12;
// Returns a bounds rectangle with at least a few pixels of the window's
// title bar visible.
gfx::Rect BoundsWithTitleBarVisible(const gfx::Rect& window_bounds,
const gfx::Rect& work_area) {
gfx::Rect bounds(window_bounds);
// Ensure title bar is vertically on screen.
if (bounds.y() < work_area.y())
bounds.set_y(work_area.y());
else if (bounds.y() + kMinimumWindowTopVisible > work_area.bottom())
bounds.set_y(work_area.bottom() - kMinimumWindowTopVisible);
return bounds;
}
} // namespace
namespace ash {
namespace internal {
/////////////////////////////////////////////////////////////////////////////
// ToplevelLayoutManager, public:
ToplevelLayoutManager::ToplevelLayoutManager()
: shelf_(NULL) {
}
ToplevelLayoutManager::~ToplevelLayoutManager() {
}
/////////////////////////////////////////////////////////////////////////////
// ToplevelLayoutManager, LayoutManager overrides:
void ToplevelLayoutManager::OnWindowAddedToLayout(aura::Window* child) {
BaseLayoutManager::OnWindowAddedToLayout(child);
UpdateShelfVisibility();
}
void ToplevelLayoutManager::OnWillRemoveWindowFromLayout(aura::Window* child) {
BaseLayoutManager::OnWillRemoveWindowFromLayout(child);
UpdateShelfVisibility();
}
void ToplevelLayoutManager::OnChildWindowVisibilityChanged(aura::Window* child,
bool visible) {
BaseLayoutManager::OnChildWindowVisibilityChanged(child, visible);
if (child->type() == aura::client::WINDOW_TYPE_NORMAL ||
child->type() == aura::client::WINDOW_TYPE_POPUP) {
if (visible) {
AnimateShowWindow(child);
} else {
// Don't start hiding the window again if it's already being hidden.
if (child->layer()->GetTargetOpacity() != 0.0f)
AnimateHideWindow(child);
}
}
UpdateShelfVisibility();
}
void ToplevelLayoutManager::SetChildBounds(aura::Window* child,
const gfx::Rect& requested_bounds) {
gfx::Rect child_bounds(requested_bounds);
// Ensure normal windows have the title bar at least partly visible.
if (!window_util::IsWindowMaximized(child) &&
!window_util::IsWindowFullscreen(child)) {
child_bounds = BoundsWithTitleBarVisible(
child_bounds, gfx::Screen::GetMonitorWorkAreaNearestWindow(child));
}
BaseLayoutManager::SetChildBounds(child, child_bounds);
}
/////////////////////////////////////////////////////////////////////////////
// ToplevelLayoutManager, WindowObserver overrides:
void ToplevelLayoutManager::OnWindowPropertyChanged(aura::Window* window,
const char* name,
void* old) {
BaseLayoutManager::OnWindowPropertyChanged(window, name, old);
if (name == aura::client::kShowStateKey)
UpdateShelfVisibility();
}
//////////////////////////////////////////////////////////////////////////////
// ToplevelLayoutManager, private:
void ToplevelLayoutManager::UpdateShelfVisibility() {
if (!shelf_)
return;
shelf_->SetVisible(!window_util::HasFullscreenWindow(windows()));
}
} // namespace internal
} // namespace ash
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