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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/maximize_mode/maximize_mode_window_state.h"
#include "ash/display/display_controller.h"
#include "ash/screen_util.h"
#include "ash/shell.h"
#include "ash/shell_window_ids.h"
#include "ash/wm/coordinate_conversion.h"
#include "ash/wm/maximize_mode/maximize_mode_window_manager.h"
#include "ash/wm/window_animations.h"
#include "ash/wm/window_state.h"
#include "ash/wm/window_state_delegate.h"
#include "ash/wm/window_util.h"
#include "ash/wm/wm_event.h"
#include "ash/wm/workspace/workspace_window_resizer.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/aura/window.h"
#include "ui/aura/window_delegate.h"
#include "ui/gfx/display.h"
#include "ui/gfx/rect.h"
namespace ash {
namespace {
// Returns the biggest possible size for a window which is about to be
// maximized.
gfx::Size GetMaximumSizeOfWindow(wm::WindowState* window_state) {
DCHECK(window_state->CanMaximize());
gfx::Size workspace_size = ScreenUtil::GetMaximizedWindowBoundsInParent(
window_state->window()).size();
aura::WindowDelegate* delegate = window_state->window()->delegate();
if (!delegate)
return workspace_size;
gfx::Size size = delegate->GetMaximumSize();
if (size.IsEmpty())
return workspace_size;
size.SetToMin(workspace_size);
return size;
}
// Returns the maximized and centered bounds of a window.
gfx::Rect GetMaximizedAndCenteredBounds(wm::WindowState* state_object) {
gfx::Rect bounds_in_parent;
if (state_object->CanMaximize()) {
bounds_in_parent.set_size(GetMaximumSizeOfWindow(state_object));
} else {
// We prefer the user given window dimensions over the current windows
// dimensions since they are likely to be the result from some other state
// object logic.
if (state_object->HasRestoreBounds())
bounds_in_parent = state_object->GetRestoreBoundsInParent();
else
bounds_in_parent = state_object->window()->bounds();
}
gfx::Rect work_area_in_parent =
ScreenUtil::GetDisplayWorkAreaBoundsInParent(state_object->window());
wm::AdjustBoundsToEnsureMinimumWindowVisibility(work_area_in_parent,
&bounds_in_parent);
// Center the window over the work area.
int x = (work_area_in_parent.width() - bounds_in_parent.width()) / 2 +
work_area_in_parent.x();
int y = (work_area_in_parent.height() - bounds_in_parent.height()) / 2 +
work_area_in_parent.y();
bounds_in_parent.set_origin(gfx::Point(x, y));
return bounds_in_parent;
}
} // namespace
// static
void MaximizeModeWindowState::UpdateWindowPosition(
wm::WindowState* window_state, bool animated) {
gfx::Rect bounds_in_parent = GetMaximizedAndCenteredBounds(window_state);
if (bounds_in_parent == window_state->window()->bounds())
return;
if (animated)
window_state->SetBoundsDirect(bounds_in_parent);
else
window_state->SetBoundsDirectAnimated(bounds_in_parent);
}
MaximizeModeWindowState::MaximizeModeWindowState(
aura::Window* window, MaximizeModeWindowManager* creator)
: window_(window),
creator_(creator),
current_state_type_(wm::GetWindowState(window)->GetStateType()) {
old_state_.reset(
wm::GetWindowState(window)->SetStateObject(
scoped_ptr<State>(this).Pass()).release());
}
MaximizeModeWindowState::~MaximizeModeWindowState() {
creator_->WindowStateDestroyed(window_);
}
void MaximizeModeWindowState::LeaveMaximizeMode(wm::WindowState* window_state) {
// Note: When we return we will destroy ourselves with the |our_reference|.
scoped_ptr<wm::WindowState::State> our_reference =
window_state->SetStateObject(old_state_.Pass());
}
void MaximizeModeWindowState::OnWMEvent(wm::WindowState* window_state,
const wm::WMEvent* event) {
switch (event->type()) {
case wm::WM_EVENT_TOGGLE_MAXIMIZE_CAPTION:
case wm::WM_EVENT_TOGGLE_VERTICAL_MAXIMIZE:
case wm::WM_EVENT_TOGGLE_HORIZONTAL_MAXIMIZE:
case wm::WM_EVENT_TOGGLE_FULLSCREEN:
case wm::WM_EVENT_TOGGLE_MAXIMIZE:
case wm::WM_EVENT_CENTER:
case wm::WM_EVENT_FULLSCREEN:
case wm::WM_EVENT_SNAP_LEFT:
case wm::WM_EVENT_SNAP_RIGHT:
case wm::WM_EVENT_NORMAL:
case wm::WM_EVENT_MAXIMIZE:
MaximizeOrCenterWindow(window_state, true);
return;
case wm::WM_EVENT_MINIMIZE:
if (current_state_type_ != wm::WINDOW_STATE_TYPE_MINIMIZED) {
current_state_type_ = wm::WINDOW_STATE_TYPE_MINIMIZED;
Minimize(window_state);
}
return;
case wm::WM_EVENT_SHOW_INACTIVE:
return;
case wm::WM_EVENT_SET_BOUNDS:
if (current_state_type_ != wm::WINDOW_STATE_TYPE_MINIMIZED &&
current_state_type_ != wm::WINDOW_STATE_TYPE_MAXIMIZED) {
gfx::Rect bounds_in_parent =
(static_cast<const wm::SetBoundsEvent*>(event))->requested_bounds();
bounds_in_parent.ClampToCenteredSize(
ScreenUtil::GetDisplayWorkAreaBoundsInParent(
window_state->window()).size());
if (bounds_in_parent != window_state->window()->bounds())
window_state->SetBoundsDirectAnimated(bounds_in_parent);
}
break;
case wm::WM_EVENT_ADDED_TO_WORKSPACE:
MaximizeOrCenterWindow(window_state, true);
break;
case wm::WM_EVENT_WORKAREA_BOUNDS_CHANGED:
case wm::WM_EVENT_DISPLAY_BOUNDS_CHANGED:
if (current_state_type_ != wm::WINDOW_STATE_TYPE_MINIMIZED)
MaximizeOrCenterWindow(window_state, false);
break;
}
}
wm::WindowStateType MaximizeModeWindowState::GetType() const {
return current_state_type_;
}
void MaximizeModeWindowState::AttachState(
wm::WindowState* window_state,
wm::WindowState::State* previous_state) {
current_state_type_ = previous_state->GetType();
// Initialize the state to a good preset.
if (current_state_type_ != wm::WINDOW_STATE_TYPE_MAXIMIZED &&
current_state_type_ != wm::WINDOW_STATE_TYPE_MINIMIZED) {
MaximizeOrCenterWindow(window_state, true);
}
window_state->set_can_be_dragged(false);
}
void MaximizeModeWindowState::DetachState(wm::WindowState* window_state) {
window_state->set_can_be_dragged(true);
}
void MaximizeModeWindowState::MaximizeOrCenterWindow(
wm::WindowState* window_state,
bool animated) {
const wm::WindowStateType target_state =
window_state->CanMaximize() ? wm::WINDOW_STATE_TYPE_MAXIMIZED :
wm::WINDOW_STATE_TYPE_NORMAL;
const wm::WindowStateType old_state_type = current_state_type_;
gfx::Rect bounds_in_parent = GetMaximizedAndCenteredBounds(window_state);
if (current_state_type_ != target_state) {
current_state_type_ = target_state;
window_state->UpdateWindowShowStateFromStateType();
window_state->NotifyPreStateTypeChange(old_state_type);
// If we have a target bounds rectangle, we center it and set it
// accordingly.
if (!bounds_in_parent.IsEmpty()) {
if (current_state_type_ == wm::WINDOW_STATE_TYPE_MINIMIZED || !animated)
window_state->SetBoundsDirect(bounds_in_parent);
else
window_state->SetBoundsDirectAnimated(bounds_in_parent);
}
window_state->NotifyPostStateTypeChange(old_state_type);
} else if (!bounds_in_parent.IsEmpty() &&
bounds_in_parent != window_state->window()->bounds()) {
// Coming here, we were most probably called through a display change.
// Do not animate.
if (animated)
window_state->SetBoundsDirectAnimated(bounds_in_parent);
else
window_state->SetBoundsDirect(bounds_in_parent);
}
if ((window_state->window()->TargetVisibility() ||
old_state_type == wm::WINDOW_STATE_TYPE_MINIMIZED) &&
!window_state->window()->layer()->visible()) {
// The layer may be hidden if the window was previously minimized. Make
// sure it's visible.
window_state->window()->Show();
}
}
void MaximizeModeWindowState::Minimize(wm::WindowState* window_state) {
::wm::SetWindowVisibilityAnimationType(
window_state->window(), WINDOW_VISIBILITY_ANIMATION_TYPE_MINIMIZE);
// Hide the window.
window_state->window()->Hide();
// Activate another window.
if (window_state->IsActive())
window_state->Deactivate();
}
} // namespace ash
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