From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- gfx/layers/apz/src/DragTracker.h | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 gfx/layers/apz/src/DragTracker.h (limited to 'gfx/layers/apz/src/DragTracker.h') diff --git a/gfx/layers/apz/src/DragTracker.h b/gfx/layers/apz/src/DragTracker.h new file mode 100644 index 0000000000..92678d53c1 --- /dev/null +++ b/gfx/layers/apz/src/DragTracker.h @@ -0,0 +1,39 @@ +/* -*- 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_layers_DragTracker_h +#define mozilla_layers_DragTracker_h + +#include "mozilla/EventForwards.h" +#include "mozilla/Maybe.h" + +namespace mozilla { + +class MouseInput; + +namespace layers { + +// DragTracker simply tracks a sequence of mouse inputs and allows us to tell +// if we are in a drag or not (i.e. the left mouse button went down and hasn't +// gone up yet). +class DragTracker { + public: + DragTracker(); + static bool StartsDrag(const MouseInput& aInput); + static bool EndsDrag(const MouseInput& aInput); + void Update(const MouseInput& aInput); + bool InDrag() const; + bool IsOnScrollbar(bool aOnScrollbar); + + private: + Maybe mOnScrollbar; + bool mInDrag; +}; + +} // namespace layers +} // namespace mozilla + +#endif /* mozilla_layers_DragTracker_h */ -- cgit v1.2.3