src/athena/env/athena_env_impl.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "athena/env/public/athena_env.h"
   6
   7 #include <vector>
   8
   9 #include "athena/util/fill_layout_manager.h"
  10 #include "base/sys_info.h"
  11 #include "ui/aura/client/aura_constants.h"
  12 #include "ui/aura/client/cursor_client.h"
  13 #include "ui/aura/client/default_capture_client.h"
  14 #include "ui/aura/env.h"
  15 #include "ui/aura/test/test_screen.h"
  16 #include "ui/aura/window_event_dispatcher.h"
  17 #include "ui/aura/window_tree_host.h"
  18 #include "ui/aura/window_tree_host_observer.h"
  19 #include "ui/base/cursor/cursor.h"
  20 #include "ui/base/cursor/image_cursors.h"
  21 #include "ui/chromeos/user_activity_power_manager_notifier.h"
  22 #include "ui/display/chromeos/display_configurator.h"
  23 #include "ui/display/types/display_mode.h"
  24 #include "ui/display/types/display_snapshot.h"
  25 #include "ui/events/devices/device_data_manager.h"
  26 #include "ui/events/devices/input_device_event_observer.h"
  27 #include "ui/events/devices/touchscreen_device.h"
  28 #include "ui/gfx/screen.h"
  29 #include "ui/wm/core/compound_event_filter.h"
  30 #include "ui/wm/core/cursor_manager.h"
  31 #include "ui/wm/core/input_method_event_filter.h"
  32 #include "ui/wm/core/native_cursor_manager.h"
  33 #include "ui/wm/core/native_cursor_manager_delegate.h"
  34 #include "ui/wm/core/user_activity_detector.h"
  35
  36 namespace athena {
  37
  38 namespace {
  39
  40 AthenaEnv* instance = nullptr;
  41
  42 // Screen object used during shutdown.
  43 gfx::Screen* screen_for_shutdown = nullptr;
  44
  45 gfx::Transform GetTouchTransform(const ui::DisplaySnapshot& display,
  46                                  const ui::TouchscreenDevice& touchscreen,
  47                                  const gfx::SizeF& framebuffer_size) {
  48   if (!display.current_mode())
  49     return gfx::Transform();
  50
  51   gfx::SizeF display_size = display.current_mode()->size();
  52 #if defined(USE_X11)
  53   gfx::SizeF touchscreen_size = framebuffer_size;
  54 #elif defined(USE_OZONE)
  55   gfx::SizeF touchscreen_size = touchscreen.size;
  56 #endif
  57
  58   if (display_size.IsEmpty() || touchscreen_size.IsEmpty())
  59     return gfx::Transform();
  60
  61   gfx::Transform transform;
  62   transform.Scale(display_size.width() / touchscreen_size.width(),
  63                   display_size.height() / touchscreen_size.height());
  64
  65   return transform;
  66 }
  67
  68 double GetTouchRadiusScale(const ui::DisplaySnapshot& display,
  69                            const ui::TouchscreenDevice& touchscreen,
  70                            const gfx::SizeF& framebuffer_size) {
  71   if (!display.current_mode())
  72     return 1;
  73
  74   gfx::SizeF display_size = display.current_mode()->size();
  75 #if defined(USE_X11)
  76   gfx::SizeF touchscreen_size = framebuffer_size;
  77 #elif defined(USE_OZONE)
  78   gfx::SizeF touchscreen_size = touchscreen.size;
  79 #endif
  80
  81   if (display_size.IsEmpty() || touchscreen_size.IsEmpty())
  82     return 1;
  83
  84   return std::sqrt(display_size.GetArea() / touchscreen_size.GetArea());
  85 }
  86
  87 // TODO(flackr:oshima): Remove this once athena switches to share
  88 // ash::DisplayManager.
  89 class ScreenForShutdown : public gfx::Screen {
  90  public:
  91   // Creates and sets the screen for shutdown. Deletes existing one if any.
  92   static void Create(const gfx::Screen* screen) {
  93     delete screen_for_shutdown;
  94     screen_for_shutdown = new ScreenForShutdown(screen->GetPrimaryDisplay());
  95     gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE,
  96                                    screen_for_shutdown);
  97   }
  98
  99  private:
 100   explicit ScreenForShutdown(const gfx::Display& primary_display)
 101       : primary_display_(primary_display) {}
 102
 103   // gfx::Screen overrides:
 104   gfx::Point GetCursorScreenPoint() override { return gfx::Point(); }
 105   gfx::NativeWindow GetWindowUnderCursor() override { return NULL; }
 106   gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point) override {
 107     return nullptr;
 108   }
 109   int GetNumDisplays() const override { return 1; }
 110   std::vector<gfx::Display> GetAllDisplays() const override {
 111     std::vector<gfx::Display> displays(1, primary_display_);
 112     return displays;
 113   }
 114   gfx::Display GetDisplayNearestWindow(gfx::NativeView view) const override {
 115     return primary_display_;
 116   }
 117   gfx::Display GetDisplayNearestPoint(const gfx::Point& point) const override {
 118     return primary_display_;
 119   }
 120   gfx::Display GetDisplayMatching(const gfx::Rect& match_rect) const override {
 121     return primary_display_;
 122   }
 123   gfx::Display GetPrimaryDisplay() const override { return primary_display_; }
 124   void AddObserver(gfx::DisplayObserver* observer) override {
 125     NOTREACHED() << "Observer should not be added during shutdown";
 126   }
 127   void RemoveObserver(gfx::DisplayObserver* observer) override {}
 128
 129   const gfx::Display primary_display_;
 130
 131   DISALLOW_COPY_AND_ASSIGN(ScreenForShutdown);
 132 };
 133
 134 // A class that bridges the gap between CursorManager and Aura. It borrows
 135 // heavily from AshNativeCursorManager.
 136 class AthenaNativeCursorManager : public wm::NativeCursorManager {
 137  public:
 138   explicit AthenaNativeCursorManager(aura::WindowTreeHost* host)
 139       : host_(host), image_cursors_(new ui::ImageCursors) {}
 140   ~AthenaNativeCursorManager() override {}
 141
 142   // wm::NativeCursorManager overrides.
 143   void SetDisplay(const gfx::Display& display,
 144                   wm::NativeCursorManagerDelegate* delegate) override {
 145     if (image_cursors_->SetDisplay(display, display.device_scale_factor()))
 146       SetCursor(delegate->GetCursor(), delegate);
 147   }
 148
 149   void SetCursor(gfx::NativeCursor cursor,
 150                  wm::NativeCursorManagerDelegate* delegate) override {
 151     image_cursors_->SetPlatformCursor(&cursor);
 152     cursor.set_device_scale_factor(image_cursors_->GetScale());
 153     delegate->CommitCursor(cursor);
 154
 155     if (delegate->IsCursorVisible())
 156       ApplyCursor(cursor);
 157   }
 158
 159   void SetVisibility(bool visible,
 160                      wm::NativeCursorManagerDelegate* delegate) override {
 161     delegate->CommitVisibility(visible);
 162
 163     if (visible) {
 164       SetCursor(delegate->GetCursor(), delegate);
 165     } else {
 166       gfx::NativeCursor invisible_cursor(ui::kCursorNone);
 167       image_cursors_->SetPlatformCursor(&invisible_cursor);
 168       ApplyCursor(invisible_cursor);
 169     }
 170   }
 171
 172   void SetCursorSet(ui::CursorSetType cursor_set,
 173                     wm::NativeCursorManagerDelegate* delegate) override {
 174     image_cursors_->SetCursorSet(cursor_set);
 175     delegate->CommitCursorSet(cursor_set);
 176     if (delegate->IsCursorVisible())
 177       SetCursor(delegate->GetCursor(), delegate);
 178   }
 179
 180   void SetMouseEventsEnabled(
 181       bool enabled,
 182       wm::NativeCursorManagerDelegate* delegate) override {
 183     delegate->CommitMouseEventsEnabled(enabled);
 184     SetVisibility(delegate->IsCursorVisible(), delegate);
 185   }
 186
 187  private:
 188   // Sets |cursor| as the active cursor within Aura.
 189   void ApplyCursor(gfx::NativeCursor cursor) { host_->SetCursor(cursor); }
 190
 191   aura::WindowTreeHost* host_;  // Not owned.
 192
 193   scoped_ptr<ui::ImageCursors> image_cursors_;
 194
 195   DISALLOW_COPY_AND_ASSIGN(AthenaNativeCursorManager);
 196 };
 197
 198 class AthenaEnvImpl : public AthenaEnv,
 199                       public aura::WindowTreeHostObserver,
 200                       public ui::DisplayConfigurator::Observer,
 201                       public ui::InputDeviceEventObserver {
 202  public:
 203   AthenaEnvImpl() : display_configurator_(new ui::DisplayConfigurator) {
 204     display_configurator_->Init(false);
 205     display_configurator_->ForceInitialConfigure(0);
 206     display_configurator_->AddObserver(this);
 207
 208     ui::DeviceDataManager::GetInstance()->AddObserver(this);
 209
 210     gfx::Size screen_size = GetPrimaryDisplaySize();
 211     if (screen_size.IsEmpty()) {
 212       // TODO(oshima): Remove this hack.
 213       if (base::SysInfo::IsRunningOnChromeOS())
 214         screen_size.SetSize(2560, 1600);
 215       else
 216         screen_size.SetSize(1280, 720);
 217     }
 218     screen_.reset(aura::TestScreen::Create(screen_size));
 219
 220     gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen_.get());
 221     host_.reset(screen_->CreateHostForPrimaryDisplay());
 222     host_->InitHost();
 223
 224     aura::Window* root_window = GetHost()->window();
 225     input_method_filter_.reset(
 226         new wm::InputMethodEventFilter(host_->GetAcceleratedWidget()));
 227     input_method_filter_->SetInputMethodPropertyInRootWindow(root_window);
 228
 229     root_window_event_filter_.reset(new wm::CompoundEventFilter);
 230     host_->window()->AddPreTargetHandler(root_window_event_filter_.get());
 231
 232     root_window_event_filter_->AddHandler(input_method_filter_.get());
 233
 234     capture_client_.reset(
 235         new aura::client::DefaultCaptureClient(host_->window()));
 236
 237     // Ensure new windows fill the display.
 238     root_window->SetLayoutManager(new FillLayoutManager(root_window));
 239
 240     cursor_manager_.reset(
 241         new wm::CursorManager(scoped_ptr<wm::NativeCursorManager>(
 242             new AthenaNativeCursorManager(host_.get()))));
 243     cursor_manager_->SetDisplay(
 244         gfx::Screen::GetNativeScreen()->GetPrimaryDisplay());
 245     cursor_manager_->SetCursor(ui::kCursorPointer);
 246     aura::client::SetCursorClient(host_->window(), cursor_manager_.get());
 247
 248     user_activity_detector_.reset(new wm::UserActivityDetector);
 249     host_->event_processor()->GetRootTarget()->AddPreTargetHandler(
 250         user_activity_detector_.get());
 251     user_activity_notifier_.reset(new ui::UserActivityPowerManagerNotifier(
 252         user_activity_detector_.get()));
 253
 254     host_->AddObserver(this);
 255     host_->Show();
 256
 257     DCHECK(!instance);
 258     instance = this;
 259   }
 260
 261   ~AthenaEnvImpl() override {
 262     instance = nullptr;
 263
 264     host_->RemoveObserver(this);
 265     if (input_method_filter_)
 266       root_window_event_filter_->RemoveHandler(input_method_filter_.get());
 267     if (user_activity_detector_) {
 268       host_->event_processor()->GetRootTarget()->RemovePreTargetHandler(
 269           user_activity_detector_.get());
 270     }
 271     root_window_event_filter_.reset();
 272     capture_client_.reset();
 273     input_method_filter_.reset();
 274     cursor_manager_.reset();
 275     user_activity_notifier_.reset();
 276     user_activity_detector_.reset();
 277
 278     input_method_filter_.reset();
 279     host_.reset();
 280
 281     ScreenForShutdown::Create(screen_.get());
 282     screen_.reset();
 283     aura::Env::DeleteInstance();
 284
 285     ui::DeviceDataManager::GetInstance()->RemoveObserver(this);
 286
 287     display_configurator_->RemoveObserver(this);
 288     display_configurator_.reset();
 289   }
 290
 291  private:
 292   struct Finder {
 293     explicit Finder(const base::Closure& c) : closure(c) {}
 294     bool operator()(const base::Closure& other) {
 295       return closure.Equals(other);
 296     }
 297     base::Closure closure;
 298   };
 299
 300   // AthenaEnv:
 301   aura::WindowTreeHost* GetHost() override { return host_.get(); }
 302
 303   void SetDisplayWorkAreaInsets(const gfx::Insets& insets) override {
 304     screen_->SetWorkAreaInsets(insets);
 305   }
 306
 307   void AddTerminatingCallback(const base::Closure& closure) override {
 308     if (closure.is_null())
 309       return;
 310     DCHECK(terminating_callbacks_.end() ==
 311            std::find_if(terminating_callbacks_.begin(),
 312                         terminating_callbacks_.end(),
 313                         Finder(closure)));
 314     terminating_callbacks_.push_back(closure);
 315   }
 316
 317   void RemoveTerminatingCallback(const base::Closure& closure) override {
 318     std::vector<base::Closure>::iterator iter =
 319         std::find_if(terminating_callbacks_.begin(),
 320                      terminating_callbacks_.end(),
 321                      Finder(closure));
 322     if (iter != terminating_callbacks_.end())
 323       terminating_callbacks_.erase(iter);
 324   }
 325
 326   void OnTerminating() override {
 327     for (std::vector<base::Closure>::iterator iter =
 328              terminating_callbacks_.begin();
 329          iter != terminating_callbacks_.end();
 330          ++iter) {
 331       iter->Run();
 332     }
 333   }
 334
 335   // ui::DisplayConfigurator::Observer:
 336   void OnDisplayModeChanged(
 337       const std::vector<ui::DisplayConfigurator::DisplayState>& displays)
 338       override {
 339     MapTouchscreenToDisplay();
 340
 341     gfx::Size size = GetPrimaryDisplaySize();
 342     if (!size.IsEmpty())
 343       host_->UpdateRootWindowSize(size);
 344   }
 345
 346   // ui::InputDeviceEventObserver:
 347   void OnTouchscreenDeviceConfigurationChanged() override {
 348     MapTouchscreenToDisplay();
 349   }
 350
 351   void OnKeyboardDeviceConfigurationChanged() override {}
 352
 353   // aura::WindowTreeHostObserver:
 354   void OnHostCloseRequested(const aura::WindowTreeHost* host) override {
 355     base::MessageLoopForUI::current()->PostTask(
 356         FROM_HERE, base::MessageLoop::QuitClosure());
 357   }
 358
 359   gfx::Size GetPrimaryDisplaySize() const {
 360     const std::vector<ui::DisplayConfigurator::DisplayState>& displays =
 361         display_configurator_->cached_displays();
 362     if (displays.empty())
 363       return gfx::Size();
 364     const ui::DisplayMode* mode = displays[0].display->current_mode();
 365     return mode ? mode->size() : gfx::Size();
 366   }
 367
 368   void MapTouchscreenToDisplay() const {
 369     auto device_manager = ui::DeviceDataManager::GetInstance();
 370     auto displays = display_configurator_->cached_displays();
 371     auto touchscreens = device_manager->touchscreen_devices();
 372
 373     if (displays.empty() || touchscreens.empty())
 374       return;
 375
 376     gfx::SizeF framebuffer_size = display_configurator_->framebuffer_size();
 377     device_manager->ClearTouchTransformerRecord();
 378     device_manager->UpdateTouchInfoForDisplay(
 379         displays[0].display->display_id(),
 380         touchscreens[0].id,
 381         GetTouchTransform(*displays[0].display,
 382                           touchscreens[0],
 383                           framebuffer_size));
 384     device_manager->UpdateTouchRadiusScale(
 385         touchscreens[0].id,
 386         GetTouchRadiusScale(*displays[0].display,
 387                             touchscreens[0],
 388                             framebuffer_size));
 389   }
 390
 391   scoped_ptr<aura::TestScreen> screen_;
 392   scoped_ptr<aura::WindowTreeHost> host_;
 393
 394   scoped_ptr<wm::InputMethodEventFilter> input_method_filter_;
 395   scoped_ptr<wm::CompoundEventFilter> root_window_event_filter_;
 396   scoped_ptr<aura::client::DefaultCaptureClient> capture_client_;
 397   scoped_ptr<wm::CursorManager> cursor_manager_;
 398   scoped_ptr<wm::UserActivityDetector> user_activity_detector_;
 399   scoped_ptr<ui::DisplayConfigurator> display_configurator_;
 400   scoped_ptr<ui::UserActivityPowerManagerNotifier> user_activity_notifier_;
 401
 402   std::vector<base::Closure> terminating_callbacks_;
 403
 404   DISALLOW_COPY_AND_ASSIGN(AthenaEnvImpl);
 405 };
 406
 407 }  // namespace
 408
 409 // static
 410 void AthenaEnv::Create() {
 411   DCHECK(!instance);
 412   new AthenaEnvImpl();
 413 }
 414
 415 AthenaEnv* AthenaEnv::Get() {
 416   DCHECK(instance);
 417   return instance;
 418 }
 419
 420 // static
 421
 422 // static
 423 void AthenaEnv::Shutdown() {
 424   DCHECK(instance);
 425   delete instance;
 426 }
 427
 428 }  // namespace athena