views: Move BoxLayout class into views/examples directory.

views/examples/box_layout.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 "views/examples/box_layout.h"
+
+namespace examples {
+
+BoxLayout::BoxLayout(Orientation orientation, int margin)
+    : orientation_(orientation),
+      margin_(margin) {
+}
+
+void BoxLayout::Layout(views::View* host) {
+  int height = host->height();
+  int width = host->width();
+  int count = host->GetChildViewCount();
+
+  int z = 0;
+  for (int i = 0; i < count; ++i) {
+    views::View* child = host->GetChildViewAt(i);
+
+    if (orientation_ == kVertical) {
+      child->SetBounds(0, z, width, height / count);
+      z = (height + margin_) * (i + 1) / count;
+    } else if (orientation_ == kHorizontal) {
+      child->SetBounds(z, 0, width / count, height);
+      z = (width + margin_) * (i + 1) / count;
+    }
+  }
+}
+
+gfx::Size BoxLayout::GetPreferredSize(views::View* host) {
+  return gfx::Size();
+}
+
+}  // namespace examples