Index: mojo/services/view_manager/view_coordinate_conversions.cc |
diff --git a/mojo/services/view_manager/view_coordinate_conversions.cc b/mojo/services/view_manager/view_coordinate_conversions.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..2532ee14839a571d687e7676ef9b13fc9048dc7a |
--- /dev/null |
+++ b/mojo/services/view_manager/view_coordinate_conversions.cc |
@@ -0,0 +1,42 @@ |
+// Copyright 2014 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 "mojo/services/view_manager/view_coordinate_conversions.h" |
+ |
+#include "mojo/services/view_manager/server_view.h" |
+#include "ui/gfx/geometry/rect.h" |
+#include "ui/gfx/geometry/vector2d.h" |
+ |
+namespace view_manager { |
+ |
+namespace { |
+ |
+gfx::Vector2d CalculateOffsetToAncestor(const ServerView* view, |
+ const ServerView* ancestor) { |
+ DCHECK(ancestor->Contains(view)); |
+ gfx::Vector2d result; |
+ for (const ServerView* v = view; v != ancestor; v = v->parent()) |
+ result += v->bounds().OffsetFromOrigin(); |
+ return result; |
+} |
+ |
+} // namespace |
+ |
+gfx::Rect ConvertRectBetweenViews(const ServerView* from, |
+ const ServerView* to, |
+ const gfx::Rect& rect) { |
+ DCHECK(from); |
+ if (from == to) |
+ return rect; |
+ |
+ if (from->Contains(to)) { |
+ const gfx::Vector2d offset(CalculateOffsetToAncestor(to, from)); |
+ return gfx::Rect(rect.origin() - offset, rect.size()); |
+ } |
+ DCHECK(to->Contains(from)); |
+ const gfx::Vector2d offset(CalculateOffsetToAncestor(from, to)); |
+ return gfx::Rect(rect.origin() + offset, rect.size()); |
+} |
+ |
+} // namespace view_manager |