ash/display/screen_position_controller.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ash/display/screen_position_controller.h"
   6
   7 #include "ash/display/display_controller.h"
   8 #include "ash/root_window_controller.h"
   9 #include "ash/shell.h"
  10 #include "ash/shell_window_ids.h"
  11 #include "ash/wm/coordinate_conversion.h"
  12 #include "ash/wm/system_modal_container_layout_manager.h"
  13 #include "ash/wm/window_properties.h"
  14 #include "ash/wm/workspace_controller.h"
  15 #include "ui/aura/client/activation_client.h"
  16 #include "ui/aura/client/capture_client.h"
  17 #include "ui/aura/client/stacking_client.h"
  18 #include "ui/aura/focus_manager.h"
  19 #include "ui/aura/root_window.h"
  20 #include "ui/aura/window_tracker.h"
  21 #include "ui/gfx/display.h"
  22 #include "ui/gfx/screen.h"
  23
  24 namespace ash {
  25 namespace {
  26
  27 // Move all transient children to |dst_root|, including the ones in
  28 // the child windows and transient children of the transient children.
  29 void MoveAllTransientChildrenToNewRoot(const gfx::Display& display,
  30                                        aura::Window* window) {
  31   aura::RootWindow* dst_root = Shell::GetInstance()->display_controller()->
  32       GetRootWindowForDisplayId(display.id());
  33   aura::Window::Windows transient_children = window->transient_children();
  34   for (aura::Window::Windows::iterator iter = transient_children.begin();
  35        iter != transient_children.end(); ++iter) {
  36     aura::Window* transient_child = *iter;
  37     int container_id = transient_child->parent()->id();
  38     DCHECK_GE(container_id, 0);
  39     aura::Window* container = Shell::GetContainer(dst_root, container_id);
  40     gfx::Rect parent_bounds_in_screen = transient_child->GetBoundsInScreen();
  41     container->AddChild(transient_child);
  42     transient_child->SetBoundsInScreen(parent_bounds_in_screen, display);
  43
  44     // Transient children may have transient children.
  45     MoveAllTransientChildrenToNewRoot(display, transient_child);
  46   }
  47   // Move transient children of the child windows if any.
  48   aura::Window::Windows children = window->children();
  49   for (aura::Window::Windows::iterator iter = children.begin();
  50        iter != children.end(); ++iter)
  51     MoveAllTransientChildrenToNewRoot(display, *iter);
  52 }
  53
  54 }  // namespace
  55
  56 namespace internal {
  57
  58 void ScreenPositionController::ConvertPointToScreen(
  59     const aura::Window* window,
  60     gfx::Point* point) {
  61   const aura::RootWindow* root = window->GetRootWindow();
  62   aura::Window::ConvertPointToTarget(window, root, point);
  63   const gfx::Point display_origin =
  64       gfx::Screen::GetDisplayNearestWindow(
  65           const_cast<aura::RootWindow*>(root)).bounds().origin();
  66   point->Offset(display_origin.x(), display_origin.y());
  67 }
  68
  69 void ScreenPositionController::ConvertPointFromScreen(
  70     const aura::Window* window,
  71     gfx::Point* point) {
  72   const aura::RootWindow* root = window->GetRootWindow();
  73   const gfx::Point display_origin =
  74       gfx::Screen::GetDisplayNearestWindow(
  75           const_cast<aura::RootWindow*>(root)).bounds().origin();
  76   point->Offset(-display_origin.x(), -display_origin.y());
  77   aura::Window::ConvertPointToTarget(root, window, point);
  78 }
  79
  80 void ScreenPositionController::ConvertNativePointToScreen(
  81     aura::Window* window,
  82     gfx::Point* point) {
  83   std::pair<aura::RootWindow*, gfx::Point> pair =
  84       wm::GetRootWindowRelativeToWindow(window, *point);
  85   *point = pair.second;
  86   ConvertPointToScreen(pair.first, point);
  87 }
  88
  89 void ScreenPositionController::SetBounds(aura::Window* window,
  90                                          const gfx::Rect& bounds,
  91                                          const gfx::Display& display) {
  92   DCHECK_NE(-1, display.id());
  93   if (!window->parent()->GetProperty(internal::kUsesScreenCoordinatesKey)) {
  94     window->SetBounds(bounds);
  95     return;
  96   }
  97
  98   // Don't move a window to other root window if:
  99   // a) the window is a transient window. It moves when its
 100   //    transient_parent moves.
 101   // b) if the window has kStayInSameRootWindowkey. It's intentionally kept in
 102   //    the same root window even if the bounds is outside of the display.
 103   if (!window->transient_parent() &&
 104       !window->GetProperty(internal::kStayInSameRootWindowKey)) {
 105     aura::RootWindow* dst_root =
 106         Shell::GetInstance()->display_controller()->GetRootWindowForDisplayId(
 107             display.id());
 108     DCHECK(dst_root);
 109     aura::Window* dst_container = NULL;
 110     if (dst_root != window->GetRootWindow()) {
 111       int container_id = window->parent()->id();
 112       // All containers that uses screen coordinates must have valid window ids.
 113       DCHECK_GE(container_id, 0);
 114       // Don't move modal screen.
 115       if (!SystemModalContainerLayoutManager::IsModalScreen(window))
 116         dst_container = Shell::GetContainer(dst_root, container_id);
 117     }
 118
 119     if (dst_container && window->parent() != dst_container) {
 120       aura::Window* focused = window->GetFocusManager()->GetFocusedWindow();
 121       aura::client::ActivationClient* activation_client =
 122           aura::client::GetActivationClient(window->GetRootWindow());
 123       aura::Window* active = activation_client->GetActiveWindow();
 124
 125       aura::WindowTracker tracker;
 126       if (focused)
 127         tracker.Add(focused);
 128       if (active && focused != active)
 129         tracker.Add(active);
 130
 131       if (dst_container->id() == kShellWindowId_WorkspaceContainer) {
 132         dst_container =
 133             GetRootWindowController(dst_root)->workspace_controller()->
 134             GetParentForNewWindow(window);
 135       }
 136
 137       dst_container->AddChild(window);
 138
 139       MoveAllTransientChildrenToNewRoot(display, window);
 140
 141       // Restore focused/active window.
 142       if (tracker.Contains(focused))
 143         window->GetFocusManager()->SetFocusedWindow(focused, NULL);
 144       else if (tracker.Contains(active))
 145         activation_client->ActivateWindow(active);
 146     }
 147   }
 148
 149   gfx::Point origin(bounds.origin());
 150   const gfx::Point display_origin =
 151       gfx::Screen::GetDisplayNearestWindow(window).bounds().origin();
 152   origin.Offset(-display_origin.x(), -display_origin.y());
 153   window->SetBounds(gfx::Rect(origin, bounds.size()));
 154 }
 155
 156 }  // internal
 157 }  // ash