Make the minimized home card not overlap activities on Athena

athena/screen/screen_manager_impl.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 "athena/screen/public/screen_manager.h"
 
 #include "athena/common/container_priorities.h"
 #include "athena/common/fill_layout_manager.h"
 #include "athena/input/public/accelerator_manager.h"
 #include "athena/screen/background_controller.h"
+#include "athena/screen/public/screen_manager_delegate.h"
 #include "athena/screen/screen_accelerator_handler.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/aura/client/screen_position_client.h"
 #include "ui/aura/client/window_tree_client.h"
 #include "ui/aura/layout_manager.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_property.h"
 #include "ui/aura/window_targeter.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/compositor/layer.h"
+#include "ui/gfx/display.h"
+#include "ui/gfx/insets.h"
+#include "ui/gfx/rect.h"
+#include "ui/gfx/screen.h"
 #include "ui/wm/core/base_focus_rules.h"
 #include "ui/wm/core/capture_controller.h"
 
 namespace athena {
 namespace {
 
 DEFINE_OWNED_WINDOW_PROPERTY_KEY(ScreenManager::ContainerParams,
                                  kContainerParamsKey,
                                  NULL);
 
@@ skipping 149 matching lines @@
     root_window->SetEventTargeter(scoped_ptr<ui::EventTargeter>());
   }
 
   aura::Window* container_;
 
   DISALLOW_COPY_AND_ASSIGN(AthenaEventTargeter);
 };
 
 class ScreenManagerImpl : public ScreenManager {
  public:
-  explicit ScreenManagerImpl(aura::Window* root_window);
+  explicit ScreenManagerImpl(ScreenManagerDelegate* delegate,
+                             aura::Window* root_window);
   virtual ~ScreenManagerImpl();
 
   void Init();
 
  private:
   // ScreenManager:
+  virtual gfx::Rect GetWorkArea() OVERRIDE;
+  virtual void SetWorkAreaInsets(const gfx::Insets& insets) OVERRIDE;
   virtual aura::Window* CreateDefaultContainer(
       const ContainerParams& params) OVERRIDE;
   virtual aura::Window* CreateContainer(const ContainerParams& params) OVERRIDE;
   virtual aura::Window* GetContext() OVERRIDE { return root_window_; }
   virtual void SetBackgroundImage(const gfx::ImageSkia& image) OVERRIDE;
   virtual ui::LayerAnimator* GetScreenAnimator() OVERRIDE;
 
+  // Not owned.
+  ScreenManagerDelegate* delegate_;
   aura::Window* root_window_;
   aura::Window* background_window_;
 
   scoped_ptr<BackgroundController> background_controller_;
   scoped_ptr<aura::client::WindowTreeClient> window_tree_client_;
   scoped_ptr<AcceleratorHandler> accelerator_handler_;
   scoped_ptr< ::wm::ScopedCaptureClient> capture_client_;
   scoped_ptr<aura::client::ScreenPositionClient> screen_position_client_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenManagerImpl);
 };
 
-ScreenManagerImpl::ScreenManagerImpl(aura::Window* root_window)
-    : root_window_(root_window) {
+ScreenManagerImpl::ScreenManagerImpl(ScreenManagerDelegate* delegate,
+                                     aura::Window* root_window)
+    : delegate_(delegate),
+      root_window_(root_window) {
   DCHECK(root_window_);
   DCHECK(!instance);
   instance = this;
 }
 
 ScreenManagerImpl::~ScreenManagerImpl() {
   aura::client::SetScreenPositionClient(root_window_, NULL);
   aura::client::SetWindowTreeClient(root_window_, NULL);
   instance = NULL;
 }
 
 void ScreenManagerImpl::Init() {
   // TODO(oshima): Move the background out from ScreenManager.
   root_window_->SetLayoutManager(new FillLayoutManager(root_window_));
   background_window_ =
       CreateContainer(ContainerParams("AthenaBackground", CP_BACKGROUND));
 
   background_window_->SetLayoutManager(
       new FillLayoutManager(background_window_));
   background_controller_.reset(new BackgroundController(background_window_));
 
   capture_client_.reset(new ::wm::ScopedCaptureClient(root_window_));
   accelerator_handler_.reset(new ScreenAcceleratorHandler(root_window_));
 }
 
+gfx::Rect ScreenManagerImpl::GetWorkArea() {
+  return gfx::Screen::GetNativeScreen()->GetPrimaryDisplay().work_area();
+}
+
+void ScreenManagerImpl::SetWorkAreaInsets(const gfx::Insets& insets) {
+  // |delegate_| may be NULL in tests.
+  if (delegate_)
+    delegate_->SetWorkAreaInsets(insets);
+}
+
 aura::Window* ScreenManagerImpl::CreateDefaultContainer(
     const ContainerParams& params) {
   aura::Window* container = CreateContainer(params);
   window_tree_client_.reset(new AthenaWindowTreeClient(container));
   aura::client::SetWindowTreeClient(root_window_, window_tree_client_.get());
 
   screen_position_client_.reset(new AthenaScreenPositionClient());
   aura::client::SetScreenPositionClient(root_window_,
                                         screen_position_client_.get());
 
@@ skipping 78 matching lines @@
 
 ScreenManager::ContainerParams::ContainerParams(const std::string& n,
                                                 int priority)
     : name(n),
       can_activate_children(false),
       grab_inputs(false),
       z_order_priority(priority) {
 }
 
 // static
-ScreenManager* ScreenManager::Create(aura::Window* root_window) {
-  (new ScreenManagerImpl(root_window))->Init();
+ScreenManager* ScreenManager::Create(ScreenManagerDelegate* delegate,
+                                     aura::Window* root_window) {
+  (new ScreenManagerImpl(delegate, root_window))->Init();
   DCHECK(instance);
   return instance;
 }
 
 // static
 ScreenManager* ScreenManager::Get() {
   DCHECK(instance);
   return instance;
 }
 
 // static
 void ScreenManager::Shutdown() {
   DCHECK(instance);
   delete instance;
   DCHECK(!instance);
 }
 
 // static
 wm::FocusRules* ScreenManager::CreateFocusRules() {
   return new AthenaFocusRules();
 }
 
 }  // namespace athena