// 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/drag_drop/drag_drop_tracker.h" #include "ash/shell.h" #include "ash/shell_window_ids.h" #include "ash/wm/coordinate_conversion.h" #include "ui/aura/root_window.h" #include "ui/base/events/event.h" #include "ui/gfx/screen.h" namespace { // Creates a window for capturing drag events. aura::Window* CreateCaptureWindow() { aura::Window* window = new aura::Window(NULL); window->SetType(aura::client::WINDOW_TYPE_NORMAL); window->Init(ui::LAYER_NOT_DRAWN); window->SetParent(NULL); window->Show(); return window; } } // namespace namespace ash { namespace internal { DragDropTracker::DragDropTracker() : capture_window_(CreateCaptureWindow()) { capture_window_->SetCapture(); } DragDropTracker::~DragDropTracker() { capture_window_->ReleaseCapture(); } aura::Window* DragDropTracker::GetTarget(const ui::LocatedEvent& event) { DCHECK(capture_window_.get()); gfx::Point location_in_screen = event.location(); wm::ConvertPointToScreen(capture_window_.get(), &location_in_screen); aura::RootWindow* root_window_at_point = wm::GetRootWindowAt(location_in_screen); gfx::Point location_in_root = location_in_screen; wm::ConvertPointFromScreen(root_window_at_point, &location_in_root); return root_window_at_point->GetEventHandlerForPoint(location_in_root); } ui::MouseEvent* DragDropTracker::ConvertMouseEvent( aura::Window* target, const ui::MouseEvent& event) { DCHECK(capture_window_.get()); gfx::Point target_location = event.location(); aura::Window::ConvertPointToTarget(capture_window_.get(), target, &target_location); gfx::Point location_in_screen = event.location(); ash::wm::ConvertPointToScreen(capture_window_.get(), &location_in_screen); gfx::Point target_root_location = event.root_location(); aura::Window::ConvertPointToTarget( capture_window_->GetRootWindow(), ash::wm::GetRootWindowAt(location_in_screen), &target_root_location); return new ui::MouseEvent(event.type(), target_location, target_root_location, event.flags()); } } // namespace internal } // namespace ash