Added labels under the windows in OverviewMode displaying their current name.

ash/wm/overview/window_selector_window.cc

Index: ash/wm/overview/window_selector_window.cc
diff --git a/ash/wm/overview/window_selector_window.cc b/ash/wm/overview/window_selector_window.cc
index 942edf41efddcbb4e92a1f439d7e138dd449acaa..f446d22de0ec5dafcb2e3c35bb1cfd20f3347dda 100644
--- a/ash/wm/overview/window_selector_window.cc
+++ b/ash/wm/overview/window_selector_window.cc
@@ -20,6 +20,29 @@ namespace ash {
 
 namespace {
 
+views::Widget* CreateWindowLabel(aura::Window* root_window,
+                                 const base::string16 title) {
+  views::Widget* widget = new views::Widget;
+  views::Widget::InitParams params;
+  params.type = views::Widget::InitParams::TYPE_POPUP;
+  params.can_activate = false;
+  params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
+  params.opacity = views::Widget::InitParams::OPAQUE_WINDOW;
+  params.parent =
+      Shell::GetContainer(root_window, ash::kShellWindowId_OverlayContainer);
+  widget->set_focus_on_creation(false);
+  widget->Init(params);
+  views::Label* label = new views::Label;
+  label->SetEnabledColor(WindowSelectorWindow::kLabelColor);
+  label->SetBackgroundColor(WindowSelectorWindow::kLabelBackground);
+  ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
+  label->SetFontList(bundle.GetFontList(ui::ResourceBundle::BoldFont));
+  label->SetText(title);
+  widget->SetContentsView(label);
+  widget->Show();
+  return widget;
+}
+
 views::Widget* CreateCloseWindowButton(aura::Window* root_window,
                                        views::ButtonListener* listener) {
   views::Widget* widget = new views::Widget;
@@ -102,11 +125,14 @@ void WindowSelectorWindow::SetItemBounds(aura::Window* root_window,
                                          const gfx::Rect& target_bounds,
                                          bool animate) {
   gfx::Rect src_rect = transform_window_.GetBoundsInScreen();
-  set_bounds(ScopedTransformOverviewWindow::
-      ShrinkRectToFitPreservingAspectRatio(src_rect, target_bounds));
+  const gfx::Rect window_bounds =
+      ScopedTransformOverviewWindow::
+        ShrinkRectToFitPreservingAspectRatio(src_rect, target_bounds);
+  set_bounds(window_bounds);
   transform_window_.SetTransform(root_window,
       ScopedTransformOverviewWindow::GetTransformForRect(src_rect, bounds()),
       animate);
+  UpdateWindowLabels(window_bounds);
   UpdateCloseButtonBounds();
 }
 
@@ -116,6 +142,19 @@ void WindowSelectorWindow::ButtonPressed(views::Button* sender,
       transform_window_.window())->Close();
 }
 
+void WindowSelectorWindow::UpdateWindowLabels(const gfx::Rect& window_bounds) {
+  // TODO Animate the labels with some cute effects
+  base::string16 window_title = transform_window_.window()->title();
+  if (!window_label_)
+    window_label_.reset(CreateWindowLabel(GetRootWindow(), window_title));
+  // TODO use constant for box height? Calculate dynamically?

[tdanderson, 2014/04/09 20:35:17]

I suspect that we'll eventually want to calculate it as a function of the window
dimensions, which is something that can be decided based on review from the
designer. It's OK to leave this as-is for the time being.

+  gfx::Rect label_bounds(window_bounds.x(),
+                         window_bounds.y() + window_bounds.height(),
+                         window_bounds.width(),
+                         40);
+  window_label_->GetNativeWindow()->SetBounds(label_bounds);
+}
+
 void WindowSelectorWindow::UpdateCloseButtonBounds() {
   aura::Window* root_window = GetRootWindow();
   gfx::Rect align_bounds(bounds());