chromeos: converts observed pointer events to DIPs

services/ui/ws/window_server.cc

 // Copyright 2014 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 "services/ui/ws/window_server.h"
 
 #include <set>
 #include <string>
 
 #include "base/logging.h"
@@ skipping 407 matching lines @@
     ServerWindow* window, mojom::Cursor cursor_id) {
   for (auto& pair : tree_map_) {
     pair.second->ProcessCursorChanged(window, cursor_id,
                                       IsOperationSource(pair.first));
   }
 }
 
 void WindowServer::SendToPointerWatchers(const ui::Event& event,
                                          const UserId& user_id,
                                          ServerWindow* target_window,
-                                         WindowTree* ignore_tree) {
+                                         WindowTree* ignore_tree,
+                                         int64_t display_id) {

[sadrul, 2017/02/09 02:27:45]

Can this figure out the display-id here from |target_window|, isntead of taking
it in as an input?

... although I guess since we already have this info from the calling code,
might as well use that instead of recomputing here?

[sky, 2017/02/09 17:06:20]

See my earlier comment as to why this passes in the display_id.

   for (auto& pair : tree_map_) {
     WindowTree* tree = pair.second.get();
     if (tree->user_id() == user_id && tree != ignore_tree)
-      tree->SendToPointerWatcher(event, target_window);
+      tree->SendToPointerWatcher(event, target_window, display_id);
   }
 }
 
 void WindowServer::SetPaintCallback(
     const base::Callback<void(ServerWindow*)>& callback) {
   DCHECK(delegate_->IsTestConfig()) << "Paint callbacks are expensive, and "
                                     << "allowed only in tests.";
   DCHECK(window_paint_callback_.is_null() || callback.is_null());
   window_paint_callback_ = callback;
 }
@@ skipping 368 matching lines @@
 void WindowServer::OnUserIdAdded(const UserId& id) {
   activity_monitor_map_[id] = base::MakeUnique<UserActivityMonitor>(nullptr);
 }
 
 void WindowServer::OnUserIdRemoved(const UserId& id) {
   activity_monitor_map_.erase(id);
 }
 
 }  // namespace ws
 }  // namespace ui