1 files changed, 66 insertions, 0 deletions
diff --git a/views/box_layout.cc b/views/box_layout.cc
new file mode 100644
index 0000000..84fb096
--- /dev/null
+++ b/views/box_layout.cc
@@ -0,0 +1,66 @@
+// 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/box_layout.h"
+
+namespace views {
+
+BoxLayout::BoxLayout(BoxLayout::Orientation orientation,
+                     int inside_border_spacing,
+                     int between_child_spacing)
+    : orientation_(orientation),
+      inside_border_spacing_(inside_border_spacing),
+      between_child_spacing_(between_child_spacing) {
+}
+
+void BoxLayout::Layout(View* host) {
+  gfx::Rect childArea(gfx::Rect(host->size()));
+  childArea.Inset(host->GetInsets());
+  childArea.Inset(inside_border_spacing_, inside_border_spacing_);
+  int x = childArea.x();
+  int y = childArea.y();
+  for (int i = 0; i < host->GetChildViewCount(); ++i) {
+    View* child = host->GetChildViewAt(i);
+    if (child->IsVisible()) {
+      gfx::Rect bounds(x, y, childArea.width(), childArea.height());
+      gfx::Size size(child->GetPreferredSize());
+      if (orientation_ == kHorizontal) {
+        bounds.set_width(size.width());
+        x += size.width() + between_child_spacing_;
+      } else {
+        bounds.set_height(size.height());
+        y += size.height() + between_child_spacing_;
+      }
+      // Clamp child view bounds to |childArea|.
+      child->SetBounds(bounds.Intersect(childArea));
+    }
+  }
+}
+
+gfx::Size BoxLayout::GetPreferredSize(View* host) {
+  gfx::Rect bounds;
+  int position = 0;
+  for (int i = 0; i < host->GetChildViewCount(); ++i) {
+    View* child = host->GetChildViewAt(i);
+    if (child->IsVisible()) {
+      gfx::Size size(child->GetPreferredSize());
+      if (orientation_ == kHorizontal) {
+        gfx::Rect child_bounds(position, 0, size.width(), size.height());
+        bounds = bounds.Union(child_bounds);
+        position += size.width();
+      } else {
+        gfx::Rect child_bounds(0, position, size.width(), size.height());
+        bounds = bounds.Union(child_bounds);
+        position += size.height();
+      }
+      position += between_child_spacing_;
+    }
+  }
+  gfx::Insets insets(host->GetInsets());
+  return
+      gfx::Size(bounds.width() + insets.width() + 2 * inside_border_spacing_,
+                bounds.height() + insets.height() + 2 * inside_border_spacing_);
+}
+
+} // namespace views