1 files changed, 41 insertions, 0 deletions
diff --git a/layout/base/PositionedEventTargeting.h b/layout/base/PositionedEventTargeting.h
new file mode 100644
index 0000000000..da7313e394
--- /dev/null
+++ b/layout/base/PositionedEventTargeting.h
@@ -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/. */
+
+#ifndef mozilla_PositionedEventTargeting_h
+#define mozilla_PositionedEventTargeting_h
+
+#include <stdint.h>
+#include "mozilla/EventForwards.h"
+#include "RelativeTo.h"
+
+class nsIFrame;
+struct nsPoint;
+
+namespace mozilla {
+
+enum { INPUT_IGNORE_ROOT_SCROLL_FRAME = 0x01 };
+/**
+ * Finds the target frame for a pointer event given the event type and location.
+ * This can look for frames within a rectangle surrounding the actual location
+ * that are suitable targets, to account for inaccurate pointing devices.
+ */
+nsIFrame* FindFrameTargetedByInputEvent(
+    WidgetGUIEvent* aEvent, RelativeTo aRootFrame,
+    const nsPoint& aPointRelativeToRootFrame, uint32_t aFlags = 0);
+
+class MOZ_RAII EventRetargetSuppression {
+ public:
+  EventRetargetSuppression();
+  ~EventRetargetSuppression();
+  static bool IsActive();
+
+ private:
+  static uint32_t sSuppressionCount;
+};
+
+}  // namespace mozilla
+
+#endif /* mozilla_PositionedEventTargeting_h */