Move mus to //services/ui

components/mus/ws/user_display_manager.cc

-// Copyright 2016 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 "components/mus/ws/user_display_manager.h"
-
-#include "components/mus/ws/display.h"
-#include "components/mus/ws/display_manager.h"
-#include "components/mus/ws/display_manager_delegate.h"
-
-namespace mus {
-namespace ws {
-
-UserDisplayManager::UserDisplayManager(ws::DisplayManager* display_manager,
-                                       DisplayManagerDelegate* delegate,
-                                       const UserId& user_id)
-    : display_manager_(display_manager),
-      delegate_(delegate),
-      user_id_(user_id),
-      got_valid_frame_decorations_(
-          delegate->GetFrameDecorationsForUser(user_id, nullptr)),
-      current_cursor_location_(0) {}
-
-UserDisplayManager::~UserDisplayManager() {}
-
-void UserDisplayManager::OnFrameDecorationValuesChanged() {
-  if (!got_valid_frame_decorations_) {
-    got_valid_frame_decorations_ = true;
-    display_manager_observers_.ForAllPtrs([this](
-        mojom::DisplayManagerObserver* observer) { CallOnDisplays(observer); });
-    if (test_observer_)
-      CallOnDisplays(test_observer_);
-    return;
-  }
-
-  mojo::Array<mojom::DisplayPtr> displays = GetAllDisplays();
-  display_manager_observers_.ForAllPtrs(
-      [this, &displays](mojom::DisplayManagerObserver* observer) {
-        observer->OnDisplaysChanged(displays.Clone());
-      });
-  if (test_observer_)
-    test_observer_->OnDisplaysChanged(displays.Clone());
-}
-
-void UserDisplayManager::AddDisplayManagerBinding(
-    mojo::InterfaceRequest<mojom::DisplayManager> request) {
-  display_manager_bindings_.AddBinding(this, std::move(request));
-}
-
-void UserDisplayManager::OnWillDestroyDisplay(Display* display) {
-  if (!got_valid_frame_decorations_)
-    return;
-
-  display_manager_observers_.ForAllPtrs(
-      [this, &display](mojom::DisplayManagerObserver* observer) {
-        observer->OnDisplayRemoved(display->id());
-      });
-  if (test_observer_)
-    test_observer_->OnDisplayRemoved(display->id());
-}
-
-void UserDisplayManager::OnMouseCursorLocationChanged(const gfx::Point& point) {
-  current_cursor_location_ =
-      static_cast<base::subtle::Atomic32>(
-          (point.x() & 0xFFFF) << 16 | (point.y() & 0xFFFF));
-  if (cursor_location_memory()) {
-    base::subtle::NoBarrier_Store(cursor_location_memory(),
-                                  current_cursor_location_);
-  }
-}
-
-void UserDisplayManager::OnDisplayUpdate(Display* display) {
-  if (!got_valid_frame_decorations_)
-    return;
-
-  mojo::Array<mojom::DisplayPtr> displays(1);
-  displays[0] = display->ToMojomDisplay();
-  delegate_->GetFrameDecorationsForUser(
-      user_id_, &(displays[0]->frame_decoration_values));
-  display_manager_observers_.ForAllPtrs(
-      [this, &displays](mojom::DisplayManagerObserver* observer) {
-        observer->OnDisplaysChanged(displays.Clone());
-      });
-  if (test_observer_)
-    test_observer_->OnDisplaysChanged(displays.Clone());
-}
-
-mojo::ScopedSharedBufferHandle UserDisplayManager::GetCursorLocationMemory() {
-  if (!cursor_location_handle_.is_valid()) {
-    // Create our shared memory segment to share the cursor state with our
-    // window clients.
-    cursor_location_handle_ =
-        mojo::SharedBufferHandle::Create(sizeof(base::subtle::Atomic32));
-
-    if (!cursor_location_handle_.is_valid())
-      return mojo::ScopedSharedBufferHandle();
-
-    cursor_location_mapping_ =
-        cursor_location_handle_->Map(sizeof(base::subtle::Atomic32));
-    if (!cursor_location_mapping_)
-      return mojo::ScopedSharedBufferHandle();
-    base::subtle::NoBarrier_Store(cursor_location_memory(),
-                                  current_cursor_location_);
-  }
-
-  return cursor_location_handle_->Clone(
-      mojo::SharedBufferHandle::AccessMode::READ_ONLY);
-}
-
-
-void UserDisplayManager::OnObserverAdded(
-    mojom::DisplayManagerObserver* observer) {
-  // Many clients key off the frame decorations to size widgets. Wait for frame
-  // decorations before notifying so that we don't have to worry about clients
-  // resizing appropriately.
-  if (!got_valid_frame_decorations_)
-    return;
-
-  CallOnDisplays(observer);
-}
-
-mojo::Array<mojom::DisplayPtr> UserDisplayManager::GetAllDisplays() {
-  const std::set<Display*>& displays = display_manager_->displays();
-  mojo::Array<mojom::DisplayPtr> display_ptrs(displays.size());
-  {
-    size_t i = 0;
-    // TODO(sky): need ordering!
-    for (Display* display : displays) {
-      display_ptrs[i] = display->ToMojomDisplay();
-      delegate_->GetFrameDecorationsForUser(
-          user_id_, &(display_ptrs[i]->frame_decoration_values));
-      ++i;
-    }
-  }
-  return display_ptrs;
-}
-
-void UserDisplayManager::CallOnDisplays(
-    mojom::DisplayManagerObserver* observer) {
-  observer->OnDisplays(GetAllDisplays());
-}
-
-void UserDisplayManager::AddObserver(
-    mojom::DisplayManagerObserverPtr observer) {
-  mojom::DisplayManagerObserver* observer_impl = observer.get();
-  display_manager_observers_.AddPtr(std::move(observer));
-  OnObserverAdded(observer_impl);
-}
-
-}  // namespace ws
-}  // namespace mus