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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/workspace/workspace_event_handler.h"
#include "ash/screen_ash.h"
#include "ash/shell.h"
#include "ash/shell_delegate.h"
#include "ash/wm/property_util.h"
#include "ash/wm/window_util.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/base/events/event.h"
#include "ui/base/events/event_utils.h"
#include "ui/base/hit_test.h"
#include "ui/compositor/scoped_layer_animation_settings.h"
#include "ui/gfx/screen.h"
namespace ash {
namespace {
void SingleAxisMaximize(aura::Window* window, const gfx::Rect& maximize_rect) {
gfx::Rect bounds_in_screen =
ScreenAsh::ConvertRectToScreen(window->parent(), window->bounds());
SetRestoreBoundsInScreen(window, bounds_in_screen);
window->SetBounds(maximize_rect);
}
void SingleAxisUnmaximize(aura::Window* window,
const gfx::Rect& restore_bounds_in_screen) {
gfx::Rect restore_bounds = ScreenAsh::ConvertRectFromScreen(
window->parent(), restore_bounds_in_screen);
window->SetBounds(restore_bounds);
ClearRestoreBounds(window);
}
void ToggleMaximizedState(aura::Window* window) {
if (GetRestoreBoundsInScreen(window)) {
if (window->GetProperty(aura::client::kShowStateKey) ==
ui::SHOW_STATE_NORMAL) {
window->SetBounds(GetRestoreBoundsInParent(window));
ClearRestoreBounds(window);
} else {
window->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_NORMAL);
}
} else if (wm::CanMaximizeWindow(window)) {
window->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_MAXIMIZED);
}
}
} // namespace
namespace internal {
WorkspaceEventHandler::WorkspaceEventHandler(aura::Window* owner)
: ToplevelWindowEventHandler(owner),
destroyed_(NULL) {
}
WorkspaceEventHandler::~WorkspaceEventHandler() {
if (destroyed_)
*destroyed_ = true;
}
void WorkspaceEventHandler::OnMouseEvent(ui::MouseEvent* event) {
aura::Window* target = static_cast<aura::Window*>(event->target());
switch (event->type()) {
case ui::ET_MOUSE_MOVED: {
int component =
target->delegate()->GetNonClientComponent(event->location());
multi_window_resize_controller_.Show(target, component,
event->location());
break;
}
case ui::ET_MOUSE_ENTERED:
break;
case ui::ET_MOUSE_CAPTURE_CHANGED:
case ui::ET_MOUSE_EXITED:
break;
case ui::ET_MOUSE_PRESSED: {
// Maximize behavior is implemented as post-target handling so the target
// can cancel it.
if (ui::EventCanceledDefaultHandling(*event)) {
ToplevelWindowEventHandler::OnMouseEvent(event);
return;
}
if (event->flags() & ui::EF_IS_DOUBLE_CLICK &&
target->delegate()->GetNonClientComponent(event->location()) ==
HTCAPTION) {
bool destroyed = false;
destroyed_ = &destroyed;
ash::Shell::GetInstance()->delegate()->RecordUserMetricsAction(
ash::UMA_TOGGLE_MAXIMIZE_CAPTION_CLICK);
ToggleMaximizedState(target);
if (destroyed)
return;
destroyed_ = NULL;
}
multi_window_resize_controller_.Hide();
HandleVerticalResizeDoubleClick(target, event);
break;
}
default:
break;
}
ToplevelWindowEventHandler::OnMouseEvent(event);
}
void WorkspaceEventHandler::OnGestureEvent(ui::GestureEvent* event) {
aura::Window* target = static_cast<aura::Window*>(event->target());
if (event->type() == ui::ET_GESTURE_DOUBLE_TAP &&
target->delegate()->GetNonClientComponent(event->location()) ==
HTCAPTION) {
ash::Shell::GetInstance()->delegate()->RecordUserMetricsAction(
ash::UMA_TOGGLE_MAXIMIZE_CAPTION_GESTURE);
ToggleMaximizedState(target); // |this| may be destroyed from here.
event->StopPropagation();
return;
}
ToplevelWindowEventHandler::OnGestureEvent(event);
}
void WorkspaceEventHandler::HandleVerticalResizeDoubleClick(
aura::Window* target,
ui::MouseEvent* event) {
gfx::Rect max_size(target->delegate()->GetMaximumSize());
if (event->flags() & ui::EF_IS_DOUBLE_CLICK &&
!wm::IsWindowMaximized(target)) {
int component =
target->delegate()->GetNonClientComponent(event->location());
gfx::Rect work_area =
Shell::GetScreen()->GetDisplayNearestWindow(target).work_area();
const gfx::Rect* restore_bounds =
GetRestoreBoundsInScreen(target);
if (component == HTBOTTOM || component == HTTOP) {
// Don't maximize vertically if the window has a max height defined.
if (max_size.height() != 0)
return;
if (restore_bounds &&
(target->bounds().height() == work_area.height() &&
target->bounds().y() == work_area.y())) {
SingleAxisUnmaximize(target, *restore_bounds);
} else {
SingleAxisMaximize(target,
gfx::Rect(target->bounds().x(),
work_area.y(),
target->bounds().width(),
work_area.height()));
}
} else if (component == HTLEFT || component == HTRIGHT) {
// Don't maximize horizontally if the window has a max width defined.
if (max_size.width() != 0)
return;
if (restore_bounds &&
(target->bounds().width() == work_area.width() &&
target->bounds().x() == work_area.x())) {
SingleAxisUnmaximize(target, *restore_bounds);
} else {
SingleAxisMaximize(target,
gfx::Rect(work_area.x(),
target->bounds().y(),
work_area.width(),
target->bounds().height()));
}
}
}
}
} // namespace internal
} // namespace ash
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