toolboxgraphicsitem.h

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/*
    Copyright © 2015-2019 by The qTox Project Contributors
 
    This file is part of qTox, a Qt-based graphical interface for Tox.
 
    qTox is libre software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    qTox is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with qTox.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#pragma once
 
#include <QGraphicsItemGroup>
#include <QObject>
#include <QPropertyAnimation>
 
class ToolBoxGraphicsItem final : public QObject, public QGraphicsItemGroup
{
    Q_OBJECT
    Q_PROPERTY(qreal opacity READ opacity WRITE setOpacity)
public:
    ToolBoxGraphicsItem();
    ~ToolBoxGraphicsItem();
 
    void paint(QPainter* painter, const QStyleOptionGraphicsItem* option,
                       QWidget* widget) final;
 
protected:
    void hoverEnterEvent(QGraphicsSceneHoverEvent* event) final;
    void hoverLeaveEvent(QGraphicsSceneHoverEvent* event) final;
 
private:
    void startAnimation(QAbstractAnimation::Direction direction);
 
    QPropertyAnimation* opacityAnimation;
    qreal idleOpacity = 0.0f;
    qreal activeOpacity = 1.0f;
    int fadeTimeMs = 300;
};