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

ash/wm/overview/window_selector_window.cc

 // Copyright 2013 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 "ash/wm/overview/window_selector_window.h"
 
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/overview/scoped_transform_overview_window.h"
 #include "grit/ash_resources.h"
 #include "ui/aura/window.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/compositor/scoped_layer_animation_settings.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/transform.h"
 #include "ui/views/controls/button/image_button.h"
 #include "ui/views/widget/widget.h"
 
 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;
   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::TRANSLUCENT_WINDOW;
   params.parent =
       Shell::GetContainer(root_window, ash::kShellWindowId_OverlayContainer);
@@ skipping 62 matching lines @@
 }
 
 void WindowSelectorWindow::PrepareForOverview() {
   transform_window_.PrepareForOverview();
 }
 
 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();
 }
 
 void WindowSelectorWindow::ButtonPressed(views::Button* sender,
                          const ui::Event& event) {
   views::Widget::GetTopLevelWidgetForNativeView(
       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());
   gfx::Transform close_button_transform;
   close_button_transform.Translate(align_bounds.right(), align_bounds.y());
 
   // If the root window has changed, force the close button to be recreated
   // and faded in on the new root window.
   if (close_button_ &&
       close_button_->GetNativeWindow()->GetRootWindow() != root_window) {
@@ skipping 32 matching lines @@
         close_button_->GetNativeWindow()->layer()->GetAnimator());
     settings.SetPreemptionStrategy(
         ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
     settings.SetTransitionDuration(base::TimeDelta::FromMilliseconds(
         ScopedTransformOverviewWindow::kTransitionMilliseconds));
     close_button_->GetNativeWindow()->SetTransform(close_button_transform);
   }
 }
 
 }  // namespace ash