mus: Let clients set the cursor of their window.

components/mus/ws/display_manager.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 "components/mus/ws/display_manager.h"
 
 #include "base/numerics/safe_conversions.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/delegated_frame_data.h"
 #include "cc/quads/render_pass.h"
@@ skipping 11 matching lines @@
 #include "components/mus/ws/window_coordinate_conversions.h"
 #include "mojo/application/public/cpp/application_connection.h"
 #include "mojo/application/public/cpp/application_impl.h"
 #include "mojo/converters/geometry/geometry_type_converters.h"
 #include "mojo/converters/input_events/input_events_type_converters.h"
 #include "mojo/converters/input_events/mojo_extended_key_event_data.h"
 #include "mojo/converters/surfaces/surfaces_type_converters.h"
 #include "mojo/converters/surfaces/surfaces_utils.h"
 #include "mojo/converters/transform/transform_type_converters.h"
 #include "third_party/skia/include/core/SkXfermode.h"
+#include "ui/base/cursor/cursor_loader.h"
 #include "ui/events/event.h"
 #include "ui/events/event_utils.h"
 #include "ui/gfx/display.h"
 #include "ui/platform_window/platform_ime_controller.h"
 #include "ui/platform_window/platform_window.h"
 
 #if defined(OS_WIN)
 #include "ui/platform_window/win/win_window.h"
 #elif defined(USE_X11)
 #include "ui/platform_window/x11/x11_window.h"
@@ skipping 121 matching lines @@
 DefaultDisplayManager::DefaultDisplayManager(
     mojo::ApplicationImpl* app_impl,
     const scoped_refptr<GpuState>& gpu_state,
     const scoped_refptr<SurfacesState>& surfaces_state)
     : app_impl_(app_impl),
       gpu_state_(gpu_state),
       surfaces_state_(surfaces_state),
       delegate_(nullptr),
       draw_timer_(false, false),
       frame_pending_(false),
+#if !defined(OS_ANDROID)
+      cursor_loader_(ui::CursorLoader::Create()),
+#endif
       weak_factory_(this) {
   metrics_.size_in_pixels = mojo::Size::New();
   metrics_.size_in_pixels->width = 1024;
   metrics_.size_in_pixels->height = 768;
 }
 
 void DefaultDisplayManager::Init(DisplayManagerDelegate* delegate) {
   delegate_ = delegate;
 
   gfx::Rect bounds(metrics_.size_in_pixels.To<gfx::Size>());
@@ skipping 36 matching lines @@
 }
 
 void DefaultDisplayManager::SetViewportSize(const gfx::Size& size) {
   platform_window_->SetBounds(gfx::Rect(size));
 }
 
 void DefaultDisplayManager::SetTitle(const base::string16& title) {
   platform_window_->SetTitle(title);
 }
 
+void DefaultDisplayManager::SetCursorById(int32_t cursor_id) {
+#if !defined(OS_ANDROID)
+  // TODO(erg): This still isn't sufficient, and will only use native cursors
+  // that chrome would use, not custom image cursors. For that, we should
+  // delegate to the window manager to load images from resource packs.
+  //
+  // We probably also need to deal with different DPIs.
+  ui::Cursor cursor(cursor_id);
+  cursor_loader_->SetPlatformCursor(&cursor);
+  platform_window_->SetCursor(cursor.platform());
+#endif
+}
+
 const mojom::ViewportMetrics& DefaultDisplayManager::GetViewportMetrics() {
   return metrics_;
 }
 
 void DefaultDisplayManager::UpdateTextInputState(
     const ui::TextInputState& state) {
   ui::PlatformImeController* ime = platform_window_->GetPlatformImeController();
   if (ime)
     ime->UpdateTextInputState(state);
 }
@@ skipping 160 matching lines @@
 
 void DefaultDisplayManager::OnAcceleratedWidgetDestroyed() {
   NOTREACHED();
 }
 
 void DefaultDisplayManager::OnActivationChanged(bool active) {}
 
 }  // namespace ws
 
 }  // namespace mus