// Copyright 2019 The Druid Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! The mousey bits
use crate;
use crate::;
/// The state of the mouse for a click, mouse-up, move, or wheel event.
///
/// In `druid`, unlike in `druid_shell`, we treat the widget's coordinate
/// space and the window's coordinate space separately.
///
/// Every mouse event can have a new position. There is no guarantee of
/// receiving an [`Event::MouseMove`] before another mouse event.
///
/// When comparing to the position that was reported by [`Event::MouseMove`],
/// the position in relation to the window might have changed because
/// the window moved or the platform just didn't inform us of the move.
/// The position may also have changed in relation to the receiver,
/// because the receiver's location changed without the mouse moving.
///
/// [`Event::MouseMove`]: crate::Event::MouseMove