1 files changed, 41 insertions, 0 deletions
diff --git a/layout/generic/ReflowOutput.cpp b/layout/generic/ReflowOutput.cpp
new file mode 100644
index 0000000000..511ba8404d
--- /dev/null
+++ b/layout/generic/ReflowOutput.cpp
@@ -0,0 +1,41 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* struct containing the output from nsIFrame::Reflow */
+
+#include "mozilla/ReflowOutput.h"
+#include "mozilla/ReflowInput.h"
+
+namespace mozilla {
+
+void OverflowAreas::UnionWith(const OverflowAreas& aOther) {
+  InkOverflow().UnionRect(InkOverflow(), aOther.InkOverflow());
+  ScrollableOverflow().UnionRect(ScrollableOverflow(),
+                                 aOther.ScrollableOverflow());
+}
+
+void OverflowAreas::UnionAllWith(const nsRect& aRect) {
+  InkOverflow().UnionRect(InkOverflow(), aRect);
+  ScrollableOverflow().UnionRect(ScrollableOverflow(), aRect);
+}
+
+void OverflowAreas::SetAllTo(const nsRect& aRect) {
+  InkOverflow() = aRect;
+  ScrollableOverflow() = aRect;
+}
+
+ReflowOutput::ReflowOutput(const ReflowInput& aReflowInput)
+    : ReflowOutput(aReflowInput.GetWritingMode()) {}
+
+void ReflowOutput::SetOverflowAreasToDesiredBounds() {
+  mOverflowAreas.SetAllTo(nsRect(0, 0, Width(), Height()));
+}
+
+void ReflowOutput::UnionOverflowAreasWithDesiredBounds() {
+  mOverflowAreas.UnionAllWith(nsRect(0, 0, Width(), Height()));
+}
+
+}  // namespace mozilla