Renames ash/wm/common into ash/common/wm

ash/wm/common/panels/panel_window_resizer.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/common/panels/panel_window_resizer.h"
-
-#include "ash/wm/common/panels/panel_layout_manager.h"
-#include "ash/wm/common/shelf/wm_shelf.h"
-#include "ash/wm/common/window_parenting_utils.h"
-#include "ash/wm/common/window_state.h"
-#include "ash/wm/common/wm_lookup.h"
-#include "ash/wm/common/wm_root_window_controller.h"
-#include "ash/wm/common/wm_shell_window_ids.h"
-#include "ash/wm/common/wm_window.h"
-#include "ui/base/hit_test.h"
-#include "ui/base/ui_base_types.h"
-#include "ui/display/display.h"
-#include "ui/display/screen.h"
-
-namespace ash {
-
-namespace {
-
-const int kPanelSnapToLauncherDistance = 30;
-
-}  // namespace
-
-PanelWindowResizer::~PanelWindowResizer() {}
-
-// static
-PanelWindowResizer* PanelWindowResizer::Create(
-    WindowResizer* next_window_resizer,
-    wm::WindowState* window_state) {
-  return new PanelWindowResizer(next_window_resizer, window_state);
-}
-
-void PanelWindowResizer::Drag(const gfx::Point& location, int event_flags) {
-  last_location_ = GetTarget()->GetParent()->ConvertPointToScreen(location);
-  if (!did_move_or_resize_) {
-    did_move_or_resize_ = true;
-    StartedDragging();
-  }
-
-  // Check if the destination has changed displays.
-  display::Screen* screen = display::Screen::GetScreen();
-  const display::Display dst_display =
-      screen->GetDisplayNearestPoint(last_location_);
-  if (dst_display.id() !=
-      panel_container_->GetRootWindow()->GetDisplayNearestWindow().id()) {
-    // The panel is being dragged to a new display. If the previous container is
-    // the current parent of the panel it will be informed of the end of drag
-    // when the panel is reparented, otherwise let the previous container know
-    // the drag is complete. If we told the panel's parent that the drag was
-    // complete it would begin positioning the panel.
-    if (GetTarget()->GetParent() != panel_container_)
-      PanelLayoutManager::Get(panel_container_)->FinishDragging();
-    wm::WmWindow* dst_root =
-        wm::WmLookup::Get()
-            ->GetRootWindowControllerWithDisplayId(dst_display.id())
-            ->GetWindow();
-    panel_container_ =
-        dst_root->GetChildByShellWindowId(kShellWindowId_PanelContainer);
-
-    // The panel's parent already knows that the drag is in progress for this
-    // panel.
-    if (panel_container_ && GetTarget()->GetParent() != panel_container_)
-      PanelLayoutManager::Get(panel_container_)->StartDragging(GetTarget());
-  }
-  gfx::Point offset;
-  gfx::Rect bounds(CalculateBoundsForDrag(location));
-  if (!(details().bounds_change & WindowResizer::kBoundsChange_Resizes)) {
-    window_state_->drag_details()->should_attach_to_shelf =
-        AttachToLauncher(bounds, &offset);
-  }
-  gfx::Point modified_location(location.x() + offset.x(),
-                               location.y() + offset.y());
-
-  base::WeakPtr<PanelWindowResizer> resizer(weak_ptr_factory_.GetWeakPtr());
-  next_window_resizer_->Drag(modified_location, event_flags);
-  if (!resizer)
-    return;
-
-  if (details().should_attach_to_shelf &&
-      !(details().bounds_change & WindowResizer::kBoundsChange_Resizes)) {
-    UpdateLauncherPosition();
-  }
-}
-
-void PanelWindowResizer::CompleteDrag() {
-  // The root window can change when dragging into a different screen.
-  next_window_resizer_->CompleteDrag();
-  FinishDragging();
-}
-
-void PanelWindowResizer::RevertDrag() {
-  next_window_resizer_->RevertDrag();
-  window_state_->drag_details()->should_attach_to_shelf = was_attached_;
-  FinishDragging();
-}
-
-PanelWindowResizer::PanelWindowResizer(WindowResizer* next_window_resizer,
-                                       wm::WindowState* window_state)
-    : WindowResizer(window_state),
-      next_window_resizer_(next_window_resizer),
-      panel_container_(NULL),
-      initial_panel_container_(NULL),
-      did_move_or_resize_(false),
-      was_attached_(window_state->panel_attached()),
-      weak_ptr_factory_(this) {
-  DCHECK(details().is_resizable);
-  panel_container_ = GetTarget()->GetRootWindow()->GetChildByShellWindowId(
-      kShellWindowId_PanelContainer);
-  initial_panel_container_ = panel_container_;
-}
-
-bool PanelWindowResizer::AttachToLauncher(const gfx::Rect& bounds,
-                                          gfx::Point* offset) {
-  bool should_attach = false;
-  if (panel_container_) {
-    PanelLayoutManager* panel_layout_manager =
-        PanelLayoutManager::Get(panel_container_);
-    gfx::Rect launcher_bounds = GetTarget()->GetParent()->ConvertRectFromScreen(
-        panel_layout_manager->shelf()->GetWindow()->GetBoundsInScreen());
-    switch (panel_layout_manager->shelf()->GetAlignment()) {
-      case wm::SHELF_ALIGNMENT_BOTTOM:
-      case wm::SHELF_ALIGNMENT_BOTTOM_LOCKED:
-        if (bounds.bottom() >=
-            (launcher_bounds.y() - kPanelSnapToLauncherDistance)) {
-          should_attach = true;
-          offset->set_y(launcher_bounds.y() - bounds.height() - bounds.y());
-        }
-        break;
-      case wm::SHELF_ALIGNMENT_LEFT:
-        if (bounds.x() <=
-            (launcher_bounds.right() + kPanelSnapToLauncherDistance)) {
-          should_attach = true;
-          offset->set_x(launcher_bounds.right() - bounds.x());
-        }
-        break;
-      case wm::SHELF_ALIGNMENT_RIGHT:
-        if (bounds.right() >=
-            (launcher_bounds.x() - kPanelSnapToLauncherDistance)) {
-          should_attach = true;
-          offset->set_x(launcher_bounds.x() - bounds.width() - bounds.x());
-        }
-        break;
-    }
-  }
-  return should_attach;
-}
-
-void PanelWindowResizer::StartedDragging() {
-  // Tell the panel layout manager that we are dragging this panel before
-  // attaching it so that it does not get repositioned.
-  if (panel_container_)
-    PanelLayoutManager::Get(panel_container_)->StartDragging(GetTarget());
-  if (!was_attached_) {
-    // Attach the panel while dragging placing it in front of other panels.
-    window_state_->set_panel_attached(true);
-    // We use root window coordinates to ensure that during the drag the panel
-    // is reparented to a container in the root window that has that window.
-    wm::WmWindow* target = GetTarget();
-    wm::WmWindow* target_root = target->GetRootWindow();
-    wm::WmWindow* old_parent = target->GetParent();
-    target->SetParentUsingContext(target_root,
-                                  target_root->GetBoundsInScreen());
-    wm::ReparentTransientChildrenOfChild(target, old_parent,
-                                         target->GetParent());
-  }
-}
-
-void PanelWindowResizer::FinishDragging() {
-  if (!did_move_or_resize_)
-    return;
-  if (window_state_->panel_attached() != details().should_attach_to_shelf) {
-    window_state_->set_panel_attached(details().should_attach_to_shelf);
-    // We use last known location to ensure that after the drag the panel
-    // is reparented to a container in the root window that has that location.
-    wm::WmWindow* target = GetTarget();
-    wm::WmWindow* target_root = target->GetRootWindow();
-    wm::WmWindow* old_parent = target->GetParent();
-    target->SetParentUsingContext(target_root,
-                                  gfx::Rect(last_location_, gfx::Size()));
-    wm::ReparentTransientChildrenOfChild(target, old_parent,
-                                         target->GetParent());
-  }
-
-  // If we started the drag in one root window and moved into another root
-  // but then canceled the drag we may need to inform the original layout
-  // manager that the drag is finished.
-  if (initial_panel_container_ != panel_container_)
-    PanelLayoutManager::Get(initial_panel_container_)->FinishDragging();
-  if (panel_container_)
-    PanelLayoutManager::Get(panel_container_)->FinishDragging();
-}
-
-void PanelWindowResizer::UpdateLauncherPosition() {
-  if (panel_container_) {
-    PanelLayoutManager::Get(panel_container_)
-        ->shelf()
-        ->UpdateIconPositionForWindow(GetTarget());
-  }
-}
-
-}  // namespace ash