1 files changed, 110 insertions, 0 deletions
diff --git a/ash/system/tray/throbber_view.cc b/ash/system/tray/throbber_view.cc
new file mode 100644
index 0000000..89d4ed4
--- /dev/null
+++ b/ash/system/tray/throbber_view.cc
@@ -0,0 +1,110 @@
+// Copyright (c) 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/system/tray/throbber_view.h"
+
+#include "ash/system/tray/tray_constants.h"
+#include "grit/ash_resources.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "ui/compositor/layer.h"
+#include "ui/compositor/scoped_layer_animation_settings.h"
+
+namespace ash {
+namespace internal {
+
+namespace {
+
+// Time in ms per throbber frame.
+const int kThrobberFrameMs = 30;
+
+// Duration for showing/hiding animation in milliseconds.
+const int kThrobberAnimationDurationMs = 200;
+
+}  // namespace
+
+SystemTrayThrobber::SystemTrayThrobber(int frame_delay_ms)
+    : views::SmoothedThrobber(frame_delay_ms) {
+}
+
+SystemTrayThrobber::~SystemTrayThrobber() {
+}
+
+void SystemTrayThrobber::SetTooltipText(const string16& tooltip_text) {
+  tooltip_text_ = tooltip_text;
+}
+
+bool SystemTrayThrobber::GetTooltipText(const gfx::Point& p,
+                                        string16* tooltip) const {
+  if (tooltip_text_.empty())
+    return false;
+
+  *tooltip = tooltip_text_;
+  return true;
+}
+
+ThrobberView::ThrobberView() {
+  throbber_ = new SystemTrayThrobber(kThrobberFrameMs);
+  throbber_->SetFrames(ui::ResourceBundle::GetSharedInstance().GetImageNamed(
+      IDR_AURA_CROS_DEFAULT_THROBBER).ToImageSkia());
+  throbber_->set_stop_delay_ms(kThrobberAnimationDurationMs);
+  AddChildView(throbber_);
+
+  SetPaintToLayer(true);
+  layer()->SetFillsBoundsOpaquely(false);
+  layer()->SetOpacity(0.0);
+}
+
+ThrobberView::~ThrobberView() {
+}
+
+gfx::Size ThrobberView::GetPreferredSize() {
+  return gfx::Size(ash::kTrayPopupItemHeight, ash::kTrayPopupItemHeight);
+}
+
+void ThrobberView::Layout() {
+  View* child = child_at(0);
+  gfx::Size ps = child->GetPreferredSize();
+  child->SetBounds((width() - ps.width()) / 2,
+                   (height() - ps.height()) / 2,
+                   ps.width(), ps.height());
+  SizeToPreferredSize();
+}
+
+bool ThrobberView::GetTooltipText(const gfx::Point& p,
+                                  string16* tooltip) const {
+  if (tooltip_text_.empty())
+    return false;
+
+  *tooltip = tooltip_text_;
+  return true;
+}
+
+void ThrobberView::Start() {
+  ScheduleAnimation(true);
+  throbber_->Start();
+}
+
+void ThrobberView::Stop() {
+  ScheduleAnimation(false);
+  throbber_->Stop();
+}
+
+void ThrobberView::SetTooltipText(const string16& tooltip_text) {
+  tooltip_text_ = tooltip_text;
+  throbber_->SetTooltipText(tooltip_text);
+}
+
+void ThrobberView::ScheduleAnimation(bool start_throbber) {
+  // Stop any previous animation.
+  layer()->GetAnimator()->StopAnimating();
+
+  ui::ScopedLayerAnimationSettings animation(layer()->GetAnimator());
+  animation.SetTransitionDuration(
+      base::TimeDelta::FromMilliseconds(kThrobberAnimationDurationMs));
+
+  layer()->SetOpacity(start_throbber ? 1.0 : 0.0);
+}
+
+}  // namespace internal
+}  // namespace ash