Place the spinner in the right corner of the controls window.

chrome/browser/chromeos/login/helper.cc

 // Copyright (c) 2010 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 "chrome/browser/chromeos/login/helper.h"
 
 #include "app/resource_bundle.h"
 #include "chrome/browser/google/google_util.h"
 #include "gfx/canvas_skia.h"
 #include "googleurl/src/gurl.h"
 #include "grit/theme_resources.h"
 #include "third_party/skia/include/effects/SkGradientShader.h"
 #include "views/controls/button/menu_button.h"
 #include "views/controls/button/native_button.h"
 #include "views/controls/label.h"
 #include "views/controls/textfield/textfield.h"
 #include "views/controls/throbber.h"
 #include "views/painter.h"
 #include "views/screen.h"
+#include "views/widget/widget.h"
 
 namespace chromeos {
 
 namespace {
 
 // Time in ms per throbber frame.
 const int kThrobberFrameMs = 60;
 
 // Time in ms before smoothed throbber is shown.
 const int kThrobberStartDelayMs = 500;
@@ skipping 30 matching lines @@
     s->unref();
     canvas->AsCanvasSkia()->drawRect(rect, paint);
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BackgroundPainter);
 };
 
 }  // namespace
 
-views::Throbber* CreateDefaultSmoothedThrobber() {
+ThrobberHostView::ThrobberHostView()
+    : host_view_(this),
+      throbber_widget_(NULL) {
+}
+
+ThrobberHostView::~ThrobberHostView() {
+  StopThrobber();
+}
+
+void ThrobberHostView::StartThrobber() {
+  StopThrobber();
+  views::Widget* widget = host_view_->GetWidget();
+  if (widget) {
+    views::SmoothedThrobber* throbber = CreateDefaultSmoothedThrobber();
+    throbber->set_stop_delay_ms(0);
+    gfx::Rect throbber_bounds = CalculateThrobberBounds(throbber);
+
+    throbber_widget_ =
+        views::Widget::CreatePopupWidget(views::Widget::Transparent,
+                                         views::Widget::NotAcceptEvents,
+                                         views::Widget::DeleteOnDestroy,
+                                         views::Widget::DontMirrorOriginInRTL);
+    throbber_bounds.Offset(host_view_->GetScreenBounds().origin());
+    throbber_widget_->InitWithWidget(widget, throbber_bounds);
+    throbber_widget_->SetContentsView(throbber);
+    throbber_widget_->Show();
+    throbber->Start();
+  }
+}
+
+void ThrobberHostView::StopThrobber() {
+  if (throbber_widget_) {
+    throbber_widget_->Close();
+    throbber_widget_ = NULL;
+  }
+}
+
+gfx::Rect ThrobberHostView::CalculateThrobberBounds(views::Throbber* throbber) {
+  gfx::Rect bounds(throbber->GetPreferredSize());
+  bounds.set_x(
+      host_view_->width() - login::kThrobberRightMargin - bounds.width());
+  bounds.set_y((host_view_->height() - bounds.height()) / 2);
+  return bounds;
+}
+
+views::SmoothedThrobber* CreateDefaultSmoothedThrobber() {
   views::SmoothedThrobber* throbber =
       new views::SmoothedThrobber(kThrobberFrameMs);
   throbber->SetFrames(
       ResourceBundle::GetSharedInstance().GetBitmapNamed(IDR_SPINNER));
   throbber->set_start_delay_ms(kThrobberStartDelayMs);
   return throbber;
 }
 
 views::Throbber* CreateDefaultThrobber() {
   views::Throbber* throbber = new views::Throbber(kThrobberFrameMs, false);
   throbber->SetFrames(
       ResourceBundle::GetSharedInstance().GetBitmapNamed(IDR_SPINNER));
   return throbber;
 }
 
 views::Painter* CreateBackgroundPainter() {
   return new BackgroundPainter();
 }
 
 gfx::Rect CalculateScreenBounds(const gfx::Size& size) {
   gfx::Rect bounds(views::Screen::GetMonitorWorkAreaNearestWindow(NULL));
   if (!size.IsEmpty()) {
     int horizontal_diff = bounds.width() - size.width();
     int vertical_diff = bounds.height() - size.height();
     bounds.Inset(horizontal_diff / 2, vertical_diff / 2);
   }
-
   return bounds;
 }
 
 void CorrectLabelFontSize(views::Label* label) {
   if (label)
     label->SetFont(label->font().DeriveFont(kFontSizeCorrectionDelta));
 }
 
 void CorrectMenuButtonFontSize(views::MenuButton* button) {
   if (button)
@@ skipping 23 matching lines @@
   gfx::Size preferred_size = NativeButton::GetPreferredSize();
   // Set minimal width.
   if (preferred_size.width() < kButtonMinWidth)
     preferred_size.set_width(kButtonMinWidth);
   return preferred_size;
 }
 
 }  // namespace login
 
 }  // namespace chromeos
-