Touch HUD app for mustash

services/ui/ws/window_tree.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_tree.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 963 matching lines @@
   // Should only get events from windows attached to a host.
   DCHECK(event_source_wms_);
   bool matched_observer =
       event_observer_matcher_ && event_observer_matcher_->MatchesEvent(event);
   client()->OnWindowInputEvent(
       event_ack_id_, ClientWindowIdForWindow(target).id,
       ui::Event::Clone(event), matched_observer ? event_observer_id_ : 0);
 }
 
 void WindowTree::SendToEventObserver(const ui::Event& event) {
-  if (event_observer_matcher_ && event_observer_matcher_->MatchesEvent(event))
+  if (event_observer_matcher_ && event_observer_matcher_->MatchesEvent(event)) {
     client()->OnEventObserved(ui::Event::Clone(event), event_observer_id_);
+  }
 }
 
 void WindowTree::NewWindow(
     uint32_t change_id,
     Id transport_window_id,
     mojo::Map<mojo::String, mojo::Array<uint8_t>> transport_properties) {
   std::map<std::string, std::vector<uint8_t>> properties;
   if (!transport_properties.is_null()) {
     properties =
         transport_properties.To<std::map<std::string, std::vector<uint8_t>>>();
@@ skipping 154 matching lines @@
                                   uint32_t observer_id) {
   if (matcher.is_null() || observer_id == 0) {
     // Clear any existing event observer.
     event_observer_matcher_.reset();
     event_observer_id_ = 0;
     return;
   }
 
   // Do not allow key events to be observed, as a compromised app could register
   // itself as an event observer and spy on keystrokes to another app.
-  if (!matcher->type_matcher) {
+  if (!matcher->type_matcher && !matcher->pointer_kind_matcher) {
     DVLOG(1) << "SetEventObserver must specify an event type.";
     return;
   }
+
   const ui::mojom::EventType event_type_whitelist[] = {
       ui::mojom::EventType::POINTER_CANCEL, ui::mojom::EventType::POINTER_DOWN,
       ui::mojom::EventType::POINTER_MOVE,   ui::mojom::EventType::POINTER_UP,
       ui::mojom::EventType::MOUSE_EXIT,     ui::mojom::EventType::WHEEL,
   };
+  const ui::mojom::PointerKind pointer_kind_whitelist[] = {
+      ui::mojom::PointerKind::MOUSE, ui::mojom::PointerKind::TOUCH,
+  };
+
   bool allowed = false;
-  for (ui::mojom::EventType event_type : event_type_whitelist) {
-    if (matcher->type_matcher->type == event_type) {
-      allowed = true;
-      break;
+  if (matcher->type_matcher) {
+    for (ui::mojom::EventType event_type : event_type_whitelist) {
+      if (matcher->type_matcher->type == event_type) {
+        allowed = true;
+        break;
+      }
+    }
+  } else if (matcher->pointer_kind_matcher) {
+    for (ui::mojom::PointerKind pointer : pointer_kind_whitelist) {
+      if (matcher->pointer_kind_matcher->pointer_kind == pointer) {
+        allowed = true;
+        break;
+      }
     }
   }
   if (!allowed) {
     DVLOG(1) << "SetEventObserver event type not allowed";
     return;
   }
 
   event_observer_matcher_.reset(new EventMatcher(*matcher));
   event_observer_id_ = observer_id;
 }
@@ skipping 217 matching lines @@
           this, std::move(internal)));
 }
 
 void WindowTree::GetCursorLocationMemory(
     const GetCursorLocationMemoryCallback& callback) {
   callback.Run(
       window_server_->display_manager()->GetUserDisplayManager(user_id_)->
       GetCursorLocationMemory());
 }
 
+void WindowTree::SetAcceptEvents(Id transport_window_id, bool accept_events) {
+  ServerWindow* window =
+      GetWindowByClientId(ClientWindowId(transport_window_id));
+  if (window)
+    window->SetAcceptEvents(accept_events);
+}
+
 void WindowTree::AddAccelerator(uint32_t id,
                                 mojom::EventMatcherPtr event_matcher,
                                 const AddAcceleratorCallback& callback) {
   DCHECK(window_manager_state_);
   const bool success =
       window_manager_state_->event_dispatcher()->AddAccelerator(
           id, std::move(event_matcher));
   callback.Run(success);
 }
 
@@ skipping 109 matching lines @@
 }
 
 bool WindowTree::IsWindowRootOfAnotherTreeForAccessPolicy(
     const ServerWindow* window) const {
   WindowTree* tree = window_server_->GetTreeWithRoot(window);
   return tree && tree != this;
 }
 
 }  // namespace ws
 }  // namespace ui