views: Add initial Throbber example.

BUG=None
TEST=export GYP_DEFINES="toolkit_views", gclient runhooks,
     make -k view_examples,
     out/Debug/view_examples
     Go to the Trobber tab, see the throbber spinning.

Review URL: http://codereview.chromium.org/3345010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@58901 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 102 insertions, 1 deletions

diff --git a/views/examples/examples_main.cc b/views/examples/examples_main.cc
index c3a0eb9..7b4b055 100644
--- a/views/examples/examples_main.cc
+++ b/views/examples/examples_main.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -30,6 +30,7 @@
 #endif
 #include "views/examples/table2_example.h"
 #include "views/examples/textfield_example.h"
+#include "views/examples/throbber_example.h"
 #include "views/examples/widget_example.h"
 #include "views/focus/accelerator_handler.h"
 #include "views/grid_layout.h"
@@ -96,6 +97,10 @@ void ExamplesMain::Run() {
   tabbed_pane->AddTab(button_example.GetExampleTitle(),
                       button_example.GetExampleView());
 
+  examples::ThrobberExample throbber_example(this);
+  tabbed_pane->AddTab(throbber_example.GetExampleTitle(),
+                      throbber_example.GetExampleView());
+
   examples::ComboboxExample combobox_example(this);
   tabbed_pane->AddTab(combobox_example.GetExampleTitle(),
                       combobox_example.GetExampleView());
diff --git a/views/examples/throbber_example.cc b/views/examples/throbber_example.cc
new file mode 100644
index 0000000..d03a9d9
--- /dev/null
+++ b/views/examples/throbber_example.cc
@@ -0,0 +1,64 @@
+// 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 "views/examples/throbber_example.h"
+
+#include "views/controls/throbber.h"
+#include "views/fill_layout.h"
+#include "views/view.h"
+
+namespace {
+
+// Time in ms per throbber frame.
+const int kThrobberFrameMs = 60;
+
+class ThrobberView : public views::View {
+ public:
+  ThrobberView() {
+    throbber_ = new views::Throbber(kThrobberFrameMs, false);
+    AddChildView(throbber_);
+    throbber_->SetVisible(true);
+    throbber_->Start();
+  }
+
+  virtual gfx::Size GetPreferredSize() {
+    return gfx::Size(width(), height());
+  }
+
+  virtual void Layout() {
+    views::View* child = GetChildViewAt(0);
+    gfx::Size ps = child->GetPreferredSize();
+    child->SetBounds((width() - ps.width()) / 2,
+                     (height() - ps.height()) / 2,
+                     ps.width(), ps.height());
+    SizeToPreferredSize();
+  }
+
+ private:
+  views::Throbber* throbber_;
+
+  DISALLOW_COPY_AND_ASSIGN(ThrobberView);
+};
+
+}  // namespace
+
+namespace examples {
+
+ThrobberExample::ThrobberExample(ExamplesMain* main)
+    : ExampleBase(main) {
+}
+
+ThrobberExample::~ThrobberExample() {
+}
+
+std::wstring ThrobberExample::GetExampleTitle() {
+  return L"Throbber";
+}
+
+void ThrobberExample::CreateExampleView(views::View* container) {
+  container->SetLayoutManager(new views::FillLayout());
+  container->AddChildView(new ThrobberView());
+}
+
+}  // namespace examples
diff --git a/views/examples/throbber_example.h b/views/examples/throbber_example.h
new file mode 100644
index 0000000..9cbc160b
--- /dev/null
+++ b/views/examples/throbber_example.h
@@ -0,0 +1,32 @@
+// 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.
+
+#ifndef VIEWS_EXAMPLES_THROBBER_EXAMPLE_H_
+#define VIEWS_EXAMPLES_THROBBER_EXAMPLE_H_
+#pragma once
+
+#include "views/examples/example_base.h"
+
+namespace views {
+class View;
+}  // namespace views
+
+namespace examples {
+
+class ThrobberExample : public ExampleBase {
+ public:
+  explicit ThrobberExample(ExamplesMain* main);
+  virtual ~ThrobberExample();
+
+  // Overridden from ExampleBase:
+  virtual std::wstring GetExampleTitle();
+  virtual void CreateExampleView(views::View* container);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ThrobberExample);
+};
+
+}  // namespace examples
+
+#endif  // VIEWS_EXAMPLES_THROBBER_EXAMPLE_H_