chromeos: Move files in //ash/common to //ash

ash/common/wm/workspace/multi_window_resize_controller.cc

Index: ash/common/wm/workspace/multi_window_resize_controller.cc
diff --git a/ash/common/wm/workspace/multi_window_resize_controller.cc b/ash/common/wm/workspace/multi_window_resize_controller.cc
deleted file mode 100644
index 48879e835dc3edef6c33dd73499fd8aeaf31ae1f..0000000000000000000000000000000000000000
--- a/ash/common/wm/workspace/multi_window_resize_controller.cc
+++ /dev/null
@@ -1,540 +0,0 @@
-// 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/common/wm/workspace/multi_window_resize_controller.h"
-
-#include "ash/common/wm/workspace/workspace_window_resizer.h"
-#include "ash/common/wm_window.h"
-#include "ash/public/cpp/shell_window_ids.h"
-#include "ash/resources/grit/ash_resources.h"
-#include "ash/root_window_controller.h"
-#include "ui/base/cursor/cursor.h"
-#include "ui/base/hit_test.h"
-#include "ui/base/resource/resource_bundle.h"
-#include "ui/display/screen.h"
-#include "ui/gfx/canvas.h"
-#include "ui/gfx/image/image.h"
-#include "ui/views/view.h"
-#include "ui/views/widget/widget.h"
-#include "ui/views/widget/widget_delegate.h"
-#include "ui/wm/core/compound_event_filter.h"
-
-namespace ash {
-namespace {
-
-// Delay before showing.
-const int kShowDelayMS = 400;
-
-// Delay before hiding.
-const int kHideDelayMS = 500;
-
-// Padding from the bottom/right edge the resize widget is shown at.
-const int kResizeWidgetPadding = 15;
-
-bool ContainsX(WmWindow* window, int x) {
-  return x >= 0 && x <= window->GetBounds().width();
-}
-
-bool ContainsScreenX(WmWindow* window, int x_in_screen) {
-  gfx::Point window_loc =
-      window->ConvertPointFromScreen(gfx::Point(x_in_screen, 0));
-  return ContainsX(window, window_loc.x());
-}
-
-bool ContainsY(WmWindow* window, int y) {
-  return y >= 0 && y <= window->GetBounds().height();
-}
-
-bool ContainsScreenY(WmWindow* window, int y_in_screen) {
-  gfx::Point window_loc =
-      window->ConvertPointFromScreen(gfx::Point(0, y_in_screen));
-  return ContainsY(window, window_loc.y());
-}
-
-bool Intersects(int x1, int max_1, int x2, int max_2) {
-  return x2 <= max_1 && max_2 > x1;
-}
-
-}  // namespace
-
-// View contained in the widget. Passes along mouse events to the
-// MultiWindowResizeController so that it can start/stop the resize loop.
-class MultiWindowResizeController::ResizeView : public views::View {
- public:
-  explicit ResizeView(MultiWindowResizeController* controller,
-                      Direction direction)
-      : controller_(controller), direction_(direction), image_(NULL) {
-    ResourceBundle& rb = ResourceBundle::GetSharedInstance();
-    int image_id = direction == TOP_BOTTOM ? IDR_AURA_MULTI_WINDOW_RESIZE_H
-                                           : IDR_AURA_MULTI_WINDOW_RESIZE_V;
-    image_ = rb.GetImageNamed(image_id).ToImageSkia();
-  }
-
-  // views::View overrides:
-  gfx::Size GetPreferredSize() const override {
-    return gfx::Size(image_->width(), image_->height());
-  }
-  void OnPaint(gfx::Canvas* canvas) override {
-    canvas->DrawImageInt(*image_, 0, 0);
-  }
-  bool OnMousePressed(const ui::MouseEvent& event) override {
-    gfx::Point location(event.location());
-    views::View::ConvertPointToScreen(this, &location);
-    controller_->StartResize(location);
-    return true;
-  }
-  bool OnMouseDragged(const ui::MouseEvent& event) override {
-    gfx::Point location(event.location());
-    views::View::ConvertPointToScreen(this, &location);
-    controller_->Resize(location, event.flags());
-    return true;
-  }
-  void OnMouseReleased(const ui::MouseEvent& event) override {
-    controller_->CompleteResize();
-  }
-  void OnMouseCaptureLost() override { controller_->CancelResize(); }
-  gfx::NativeCursor GetCursor(const ui::MouseEvent& event) override {
-    int component = (direction_ == LEFT_RIGHT) ? HTRIGHT : HTBOTTOM;
-    return ::wm::CompoundEventFilter::CursorForWindowComponent(component);
-  }
-
- private:
-  MultiWindowResizeController* controller_;
-  const Direction direction_;
-  const gfx::ImageSkia* image_;
-
-  DISALLOW_COPY_AND_ASSIGN(ResizeView);
-};
-
-// MouseWatcherHost implementation for MultiWindowResizeController. Forwards
-// Contains() to MultiWindowResizeController.
-class MultiWindowResizeController::ResizeMouseWatcherHost
-    : public views::MouseWatcherHost {
- public:
-  ResizeMouseWatcherHost(MultiWindowResizeController* host) : host_(host) {}
-
-  // MouseWatcherHost overrides:
-  bool Contains(const gfx::Point& point_in_screen,
-                MouseEventType type) override {
-    return (type == MOUSE_PRESS) ? host_->IsOverResizeWidget(point_in_screen)
-                                 : host_->IsOverWindows(point_in_screen);
-  }
-
- private:
-  MultiWindowResizeController* host_;
-
-  DISALLOW_COPY_AND_ASSIGN(ResizeMouseWatcherHost);
-};
-
-MultiWindowResizeController::ResizeWindows::ResizeWindows()
-    : window1(nullptr), window2(nullptr), direction(TOP_BOTTOM) {}
-
-MultiWindowResizeController::ResizeWindows::ResizeWindows(
-    const ResizeWindows& other) = default;
-
-MultiWindowResizeController::ResizeWindows::~ResizeWindows() {}
-
-bool MultiWindowResizeController::ResizeWindows::Equals(
-    const ResizeWindows& other) const {
-  return window1 == other.window1 && window2 == other.window2 &&
-         direction == other.direction;
-}
-
-MultiWindowResizeController::MultiWindowResizeController() {}
-
-MultiWindowResizeController::~MultiWindowResizeController() {
-  window_resizer_.reset();
-  Hide();
-}
-
-void MultiWindowResizeController::Show(WmWindow* window,
-                                       int component,
-                                       const gfx::Point& point_in_window) {
-  // When the resize widget is showing we ignore Show() requests. Instead we
-  // only care about mouse movements from MouseWatcher. This is necessary as
-  // WorkspaceEventHandler only sees mouse movements over the windows, not all
-  // windows or over the desktop.
-  if (resize_widget_)
-    return;
-
-  ResizeWindows windows(DetermineWindows(window, component, point_in_window));
-  if (IsShowing() && windows_.Equals(windows))
-    return;
-
-  Hide();
-  if (!windows.is_valid()) {
-    windows_ = ResizeWindows();
-    return;
-  }
-
-  windows_ = windows;
-  windows_.window1->aura_window()->AddObserver(this);
-  windows_.window2->aura_window()->AddObserver(this);
-  show_location_in_parent_ =
-      window->ConvertPointToTarget(window->GetParent(), point_in_window);
-  show_timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(kShowDelayMS),
-                    this,
-                    &MultiWindowResizeController::ShowIfValidMouseLocation);
-}
-
-void MultiWindowResizeController::Hide() {
-  if (window_resizer_)
-    return;  // Ignore hides while actively resizing.
-
-  if (windows_.window1) {
-    windows_.window1->aura_window()->RemoveObserver(this);
-    windows_.window1 = NULL;
-  }
-  if (windows_.window2) {
-    windows_.window2->aura_window()->RemoveObserver(this);
-    windows_.window2 = NULL;
-  }
-
-  show_timer_.Stop();
-
-  if (!resize_widget_)
-    return;
-
-  for (size_t i = 0; i < windows_.other_windows.size(); ++i)
-    windows_.other_windows[i]->aura_window()->RemoveObserver(this);
-  mouse_watcher_.reset();
-  resize_widget_.reset();
-  windows_ = ResizeWindows();
-}
-
-void MultiWindowResizeController::MouseMovedOutOfHost() {
-  Hide();
-}
-
-void MultiWindowResizeController::OnWindowDestroying(aura::Window* window) {
-  // Have to explicitly reset the WindowResizer, otherwise Hide() does nothing.
-  window_resizer_.reset();
-  Hide();
-}
-
-MultiWindowResizeController::ResizeWindows
-MultiWindowResizeController::DetermineWindowsFromScreenPoint(
-    WmWindow* window) const {
-  gfx::Point mouse_location(
-      display::Screen::GetScreen()->GetCursorScreenPoint());
-  mouse_location = window->ConvertPointFromScreen(mouse_location);
-  const int component = window->GetNonClientComponent(mouse_location);
-  return DetermineWindows(window, component, mouse_location);
-}
-
-void MultiWindowResizeController::CreateMouseWatcher() {
-  mouse_watcher_.reset(
-      new views::MouseWatcher(new ResizeMouseWatcherHost(this), this));
-  mouse_watcher_->set_notify_on_exit_time(
-      base::TimeDelta::FromMilliseconds(kHideDelayMS));
-  mouse_watcher_->Start();
-}
-
-MultiWindowResizeController::ResizeWindows
-MultiWindowResizeController::DetermineWindows(WmWindow* window,
-                                              int window_component,
-                                              const gfx::Point& point) const {
-  ResizeWindows result;
-  gfx::Point point_in_parent =
-      window->ConvertPointToTarget(window->GetParent(), point);
-  switch (window_component) {
-    case HTRIGHT:
-      result.direction = LEFT_RIGHT;
-      result.window1 = window;
-      result.window2 = FindWindowByEdge(
-          window, HTLEFT, window->GetBounds().right(), point_in_parent.y());
-      break;
-    case HTLEFT:
-      result.direction = LEFT_RIGHT;
-      result.window1 = FindWindowByEdge(
-          window, HTRIGHT, window->GetBounds().x(), point_in_parent.y());
-      result.window2 = window;
-      break;
-    case HTTOP:
-      result.direction = TOP_BOTTOM;
-      result.window1 = FindWindowByEdge(window, HTBOTTOM, point_in_parent.x(),
-                                        window->GetBounds().y());
-      result.window2 = window;
-      break;
-    case HTBOTTOM:
-      result.direction = TOP_BOTTOM;
-      result.window1 = window;
-      result.window2 = FindWindowByEdge(window, HTTOP, point_in_parent.x(),
-                                        window->GetBounds().bottom());
-      break;
-    default:
-      break;
-  }
-  return result;
-}
-
-WmWindow* MultiWindowResizeController::FindWindowByEdge(
-    WmWindow* window_to_ignore,
-    int edge_want,
-    int x_in_parent,
-    int y_in_parent) const {
-  WmWindow* parent = window_to_ignore->GetParent();
-  std::vector<WmWindow*> windows = parent->GetChildren();
-  for (auto i = windows.rbegin(); i != windows.rend(); ++i) {
-    WmWindow* window = *i;
-    if (window == window_to_ignore || !window->IsVisible())
-      continue;
-
-    // Ignore windows without a non-client area.
-    if (!window->HasNonClientArea())
-      continue;
-
-    gfx::Point p = parent->ConvertPointToTarget(
-        window, gfx::Point(x_in_parent, y_in_parent));
-    switch (edge_want) {
-      case HTLEFT:
-        if (ContainsY(window, p.y()) && p.x() == 0)
-          return window;
-        break;
-      case HTRIGHT:
-        if (ContainsY(window, p.y()) && p.x() == window->GetBounds().width())
-          return window;
-        break;
-      case HTTOP:
-        if (ContainsX(window, p.x()) && p.y() == 0)
-          return window;
-        break;
-      case HTBOTTOM:
-        if (ContainsX(window, p.x()) && p.y() == window->GetBounds().height())
-          return window;
-        break;
-      default:
-        NOTREACHED();
-    }
-    // Window doesn't contain the edge, but if window contains |point|
-    // it's obscuring any other window that could be at the location.
-    if (window->GetBounds().Contains(x_in_parent, y_in_parent))
-      return NULL;
-  }
-  return NULL;
-}
-
-WmWindow* MultiWindowResizeController::FindWindowTouching(
-    WmWindow* window,
-    Direction direction) const {
-  int right = window->GetBounds().right();
-  int bottom = window->GetBounds().bottom();
-  WmWindow* parent = window->GetParent();
-  std::vector<WmWindow*> windows = parent->GetChildren();
-  for (auto i = windows.rbegin(); i != windows.rend(); ++i) {
-    WmWindow* other = *i;
-    if (other == window || !other->IsVisible())
-      continue;
-    switch (direction) {
-      case TOP_BOTTOM:
-        if (other->GetBounds().y() == bottom &&
-            Intersects(other->GetBounds().x(), other->GetBounds().right(),
-                       window->GetBounds().x(), window->GetBounds().right())) {
-          return other;
-        }
-        break;
-      case LEFT_RIGHT:
-        if (other->GetBounds().x() == right &&
-            Intersects(other->GetBounds().y(), other->GetBounds().bottom(),
-                       window->GetBounds().y(), window->GetBounds().bottom())) {
-          return other;
-        }
-        break;
-      default:
-        NOTREACHED();
-    }
-  }
-  return NULL;
-}
-
-void MultiWindowResizeController::FindWindowsTouching(
-    WmWindow* start,
-    Direction direction,
-    std::vector<WmWindow*>* others) const {
-  while (start) {
-    start = FindWindowTouching(start, direction);
-    if (start)
-      others->push_back(start);
-  }
-}
-
-void MultiWindowResizeController::ShowIfValidMouseLocation() {
-  if (DetermineWindowsFromScreenPoint(windows_.window1).Equals(windows_) ||
-      DetermineWindowsFromScreenPoint(windows_.window2).Equals(windows_)) {
-    ShowNow();
-  } else {
-    Hide();
-  }
-}
-
-void MultiWindowResizeController::ShowNow() {
-  DCHECK(!resize_widget_.get());
-  DCHECK(windows_.is_valid());
-  show_timer_.Stop();
-  resize_widget_.reset(new views::Widget);
-  views::Widget::InitParams params(views::Widget::InitParams::TYPE_POPUP);
-  params.name = "MultiWindowResizeController";
-  params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
-  params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
-  windows_.window1->GetRootWindowController()
-      ->ConfigureWidgetInitParamsForContainer(
-          resize_widget_.get(), kShellWindowId_AlwaysOnTopContainer, &params);
-  ResizeView* view = new ResizeView(this, windows_.direction);
-  resize_widget_->set_focus_on_creation(false);
-  resize_widget_->Init(params);
-  WmWindow::Get(resize_widget_->GetNativeWindow())
-      ->SetVisibilityAnimationType(::wm::WINDOW_VISIBILITY_ANIMATION_TYPE_FADE);
-  resize_widget_->SetContentsView(view);
-  show_bounds_in_screen_ = windows_.window1->GetParent()->ConvertRectToScreen(
-      CalculateResizeWidgetBounds(show_location_in_parent_));
-  resize_widget_->SetBounds(show_bounds_in_screen_);
-  resize_widget_->Show();
-  CreateMouseWatcher();
-}
-
-bool MultiWindowResizeController::IsShowing() const {
-  return resize_widget_.get() || show_timer_.IsRunning();
-}
-
-void MultiWindowResizeController::StartResize(
-    const gfx::Point& location_in_screen) {
-  DCHECK(!window_resizer_.get());
-  DCHECK(windows_.is_valid());
-  gfx::Point location_in_parent =
-      windows_.window2->GetParent()->ConvertPointFromScreen(location_in_screen);
-  std::vector<WmWindow*> windows;
-  windows.push_back(windows_.window2);
-  DCHECK(windows_.other_windows.empty());
-  FindWindowsTouching(windows_.window2, windows_.direction,
-                      &windows_.other_windows);
-  for (size_t i = 0; i < windows_.other_windows.size(); ++i) {
-    windows_.other_windows[i]->aura_window()->AddObserver(this);
-    windows.push_back(windows_.other_windows[i]);
-  }
-  int component = windows_.direction == LEFT_RIGHT ? HTRIGHT : HTBOTTOM;
-  wm::WindowState* window_state = windows_.window1->GetWindowState();
-  window_state->CreateDragDetails(location_in_parent, component,
-                                  aura::client::WINDOW_MOVE_SOURCE_MOUSE);
-  window_resizer_.reset(WorkspaceWindowResizer::Create(window_state, windows));
-
-  // Do not hide the resize widget while a drag is active.
-  mouse_watcher_.reset();
-}
-
-void MultiWindowResizeController::Resize(const gfx::Point& location_in_screen,
-                                         int event_flags) {
-  gfx::Point location_in_parent =
-      windows_.window1->GetParent()->ConvertPointFromScreen(location_in_screen);
-  window_resizer_->Drag(location_in_parent, event_flags);
-  gfx::Rect bounds = windows_.window1->GetParent()->ConvertRectToScreen(
-      CalculateResizeWidgetBounds(location_in_parent));
-
-  if (windows_.direction == LEFT_RIGHT)
-    bounds.set_y(show_bounds_in_screen_.y());
-  else
-    bounds.set_x(show_bounds_in_screen_.x());
-  resize_widget_->SetBounds(bounds);
-}
-
-void MultiWindowResizeController::CompleteResize() {
-  window_resizer_->CompleteDrag();
-  window_resizer_->GetTarget()->GetWindowState()->DeleteDragDetails();
-  window_resizer_.reset();
-
-  // Mouse may still be over resizer, if not hide.
-  gfx::Point screen_loc = display::Screen::GetScreen()->GetCursorScreenPoint();
-  if (!resize_widget_->GetWindowBoundsInScreen().Contains(screen_loc)) {
-    Hide();
-  } else {
-    // If the mouse is over the resizer we need to remove observers on any of
-    // the |other_windows|. If we start another resize we'll recalculate the
-    // |other_windows| and invoke AddObserver() as necessary.
-    for (size_t i = 0; i < windows_.other_windows.size(); ++i)
-      windows_.other_windows[i]->aura_window()->RemoveObserver(this);
-    windows_.other_windows.clear();
-
-    CreateMouseWatcher();
-  }
-}
-
-void MultiWindowResizeController::CancelResize() {
-  if (!window_resizer_)
-    return;  // Happens if window was destroyed and we nuked the WindowResizer.
-  window_resizer_->RevertDrag();
-  window_resizer_->GetTarget()->GetWindowState()->DeleteDragDetails();
-  window_resizer_.reset();
-  Hide();
-}
-
-gfx::Rect MultiWindowResizeController::CalculateResizeWidgetBounds(
-    const gfx::Point& location_in_parent) const {
-  gfx::Size pref = resize_widget_->GetContentsView()->GetPreferredSize();
-  int x = 0, y = 0;
-  if (windows_.direction == LEFT_RIGHT) {
-    x = windows_.window1->GetBounds().right() - pref.width() / 2;
-    y = location_in_parent.y() + kResizeWidgetPadding;
-    if (y + pref.height() / 2 > windows_.window1->GetBounds().bottom() &&
-        y + pref.height() / 2 > windows_.window2->GetBounds().bottom()) {
-      y = location_in_parent.y() - kResizeWidgetPadding - pref.height();
-    }
-  } else {
-    x = location_in_parent.x() + kResizeWidgetPadding;
-    if (x + pref.height() / 2 > windows_.window1->GetBounds().right() &&
-        x + pref.height() / 2 > windows_.window2->GetBounds().right()) {
-      x = location_in_parent.x() - kResizeWidgetPadding - pref.width();
-    }
-    y = windows_.window1->GetBounds().bottom() - pref.height() / 2;
-  }
-  return gfx::Rect(x, y, pref.width(), pref.height());
-}
-
-bool MultiWindowResizeController::IsOverResizeWidget(
-    const gfx::Point& location_in_screen) const {
-  return resize_widget_->GetWindowBoundsInScreen().Contains(location_in_screen);
-}
-
-bool MultiWindowResizeController::IsOverWindows(
-    const gfx::Point& location_in_screen) const {
-  if (IsOverResizeWidget(location_in_screen))
-    return true;
-
-  if (windows_.direction == TOP_BOTTOM) {
-    if (!ContainsScreenX(windows_.window1, location_in_screen.x()) ||
-        !ContainsScreenX(windows_.window2, location_in_screen.x())) {
-      return false;
-    }
-  } else {
-    if (!ContainsScreenY(windows_.window1, location_in_screen.y()) ||
-        !ContainsScreenY(windows_.window2, location_in_screen.y())) {
-      return false;
-    }
-  }
-
-  // Check whether |location_in_screen| is in the event target's resize region.
-  // This is tricky because a window's resize region can extend outside a
-  // window's bounds.
-  WmWindow* target =
-      windows_.window1->GetRootWindowController()->FindEventTarget(
-          location_in_screen);
-  if (target == windows_.window1) {
-    return IsOverComponent(
-        windows_.window1, location_in_screen,
-        windows_.direction == TOP_BOTTOM ? HTBOTTOM : HTRIGHT);
-  }
-  if (target == windows_.window2) {
-    return IsOverComponent(windows_.window2, location_in_screen,
-                           windows_.direction == TOP_BOTTOM ? HTTOP : HTLEFT);
-  }
-  return false;
-}
-
-bool MultiWindowResizeController::IsOverComponent(
-    WmWindow* window,
-    const gfx::Point& location_in_screen,
-    int component) const {
-  gfx::Point window_loc = window->ConvertPointFromScreen(location_in_screen);
-  return window->GetNonClientComponent(window_loc) == component;
-}
-
-}  // namespace ash