ash/host/ash_window_tree_host.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 "ash/host/ash_window_tree_host.h"
   6
   7 #include "ui/aura/client/screen_position_client.h"
   8 #include "ui/aura/window_tree_host.h"
   9 #include "ui/events/event.h"
  10 #include "ui/gfx/geometry/rect.h"
  11
  12 namespace ash {
  13
  14 void AshWindowTreeHost::TranslateLocatedEvent(ui::LocatedEvent* event) {
  15   if (event->IsTouchEvent())
  16     return;
  17
  18   aura::WindowTreeHost* wth = AsWindowTreeHost();
  19   aura::Window* root_window = wth->window();
  20   aura::client::ScreenPositionClient* screen_position_client =
  21       aura::client::GetScreenPositionClient(root_window);
  22   gfx::Rect local(wth->GetBounds().size());
  23   local.Inset(GetHostInsets());
  24
  25   if (screen_position_client && !local.Contains(event->location())) {
  26     gfx::Point location(event->location());
  27     // In order to get the correct point in screen coordinates
  28     // during passive grab, we first need to find on which host window
  29     // the mouse is on, and find out the screen coordinates on that
  30     // host window, then convert it back to this host window's coordinate.
  31     screen_position_client->ConvertHostPointToScreen(root_window, &location);
  32     screen_position_client->ConvertPointFromScreen(root_window, &location);
  33     wth->ConvertPointToHost(&location);
  34     event->set_location(location);
  35     event->set_root_location(location);
  36   }
  37 }
  38
  39 }  // namespace ash