chrome/browser/ui/views/tabs/window_finder_ash.cc

   1 // Copyright 2014 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 "chrome/browser/ui/views/tabs/window_finder.h"
   6
   7 #include "ash/shell_window_ids.h"
   8 #include "ash/wm/coordinate_conversion.h"
   9 #include "ui/aura/client/screen_position_client.h"
  10 #include "ui/aura/window.h"
  11 #include "ui/aura/window_event_dispatcher.h"
  12 #include "ui/wm/core/window_util.h"
  13
  14 namespace {
  15
  16 gfx::NativeWindow GetLocalProcessWindowAtPointImpl(
  17     const gfx::Point& screen_point,
  18     const std::set<gfx::NativeWindow>& ignore,
  19     gfx::NativeWindow window) {
  20   if (ignore.find(window) != ignore.end())
  21     return NULL;
  22
  23   if (!window->IsVisible())
  24     return NULL;
  25
  26   if (window->id() == ash::kShellWindowId_PhantomWindow ||
  27       window->id() == ash::kShellWindowId_OverlayContainer ||
  28       window->id() == ash::kShellWindowId_MouseCursorContainer)
  29     return NULL;
  30
  31   if (window->layer()->type() == ui::LAYER_TEXTURED) {
  32     // Returns the window that has visible layer and can hit the
  33     // |screen_point|, because we want to detach the tab as soon as
  34     // the dragging mouse moved over to the window that can hide the
  35     // moving tab.
  36     aura::client::ScreenPositionClient* client =
  37         aura::client::GetScreenPositionClient(window->GetRootWindow());
  38     gfx::Point local_point = screen_point;
  39     client->ConvertPointFromScreen(window, &local_point);
  40     return window->GetEventHandlerForPoint(local_point) ? window : nullptr;
  41   }
  42
  43   for (aura::Window::Windows::const_reverse_iterator i =
  44            window->children().rbegin(); i != window->children().rend(); ++i) {
  45     gfx::NativeWindow result =
  46         GetLocalProcessWindowAtPointImpl(screen_point, ignore, *i);
  47     if (result)
  48       return result;
  49   }
  50   return NULL;
  51 }
  52
  53 }  // namespace
  54
  55 gfx::NativeWindow GetLocalProcessWindowAtPointAsh(
  56     const gfx::Point& screen_point,
  57     const std::set<gfx::NativeWindow>& ignore) {
  58   return GetLocalProcessWindowAtPointImpl(
  59       screen_point, ignore, ::ash::wm::GetRootWindowAt(screen_point));
  60 }