ash/wm/window_util.cc

// 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/window_util.h"

#include <vector>

#include "ash/common/ash_constants.h"
#include "ash/common/wm_shell.h"
#include "ash/common/wm_window.h"
#include "ash/root_window_controller.h"
#include "ash/shell.h"
#include "ash/wm/window_properties.h"
#include "ash/wm/window_state.h"
#include "ash/wm/window_state_aura.h"
#include "ash/wm/wm_event.h"
#include "ash/wm/wm_screen_util.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/aura/window.h"
#include "ui/aura/window_delegate.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/compositor/dip_util.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
#include "ui/views/view.h"
#include "ui/views/widget/widget.h"
#include "ui/wm/core/window_util.h"
#include "ui/wm/public/activation_client.h"

namespace ash {
namespace wm {

namespace {

// Moves |window| to the given |root| window's corresponding container, if it is
// not already in the same root window. Returns true if |window| was moved.
bool MoveWindowToRoot(aura::Window* window, aura::Window* root) {
  if (!root || root == window->GetRootWindow())
    return false;
  aura::Window* container = RootWindowController::ForWindow(root)->GetContainer(
      window->parent()->id());
  if (!container)
    return false;
  container->AddChild(window);
  return true;
}

}  // namespace

// TODO(beng): replace many of these functions with the corewm versions.
void ActivateWindow(aura::Window* window) {
  ::wm::ActivateWindow(window);
}

void DeactivateWindow(aura::Window* window) {
  ::wm::DeactivateWindow(window);
}

bool IsActiveWindow(aura::Window* window) {
  return ::wm::IsActiveWindow(window);
}

aura::Window* GetActiveWindow() {
  return aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())
      ->GetActiveWindow();
}

aura::Window* GetActivatableWindow(aura::Window* window) {
  return ::wm::GetActivatableWindow(window);
}

bool CanActivateWindow(aura::Window* window) {
  return ::wm::CanActivateWindow(window);
}

bool IsWindowUserPositionable(aura::Window* window) {
  return GetWindowState(window)->IsUserPositionable();
}

void PinWindow(aura::Window* window, bool trusted) {
  wm::WMEvent event(trusted ? wm::WM_EVENT_TRUSTED_PIN : wm::WM_EVENT_PIN);
  wm::GetWindowState(window)->OnWMEvent(&event);
}

bool MoveWindowToDisplay(aura::Window* window, int64_t display_id) {
  DCHECK(window);
  WmWindow* root = WmShell::Get()->GetRootWindowForDisplayId(display_id);
  return root && MoveWindowToRoot(window, root->aura_window());
}

bool MoveWindowToEventRoot(aura::Window* window, const ui::Event& event) {
  DCHECK(window);
  views::View* target = static_cast<views::View*>(event.target());
  if (!target)
    return false;
  aura::Window* root = target->GetWidget()->GetNativeView()->GetRootWindow();
  return root && MoveWindowToRoot(window, root);
}

void SnapWindowToPixelBoundary(aura::Window* window) {
  window->SetProperty(kSnapChildrenToPixelBoundary, true);
  aura::Window* snapped_ancestor = window->parent();
  while (snapped_ancestor) {
    if (snapped_ancestor->GetProperty(kSnapChildrenToPixelBoundary)) {
      ui::SnapLayerToPhysicalPixelBoundary(snapped_ancestor->layer(),
                                           window->layer());
      return;
    }
    snapped_ancestor = snapped_ancestor->parent();
  }
}

void SetSnapsChildrenToPhysicalPixelBoundary(aura::Window* container) {
  DCHECK(!container->GetProperty(kSnapChildrenToPixelBoundary))
      << container->GetName();
  container->SetProperty(kSnapChildrenToPixelBoundary, true);
}

}  // namespace wm
}  // namespace ash