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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#pragma once
#include <QPointer>
#include <QTime>
#include <QBasicTimer>
#include <QStyle>
#include <QPainter>
#include <QWidget>
/*
* This is a set of helper classes to allow for widget animations in
* the style. Its mostly taken from Vista style so it should be fully documented
* there.
*
*/
class Animation
{
public :
Animation() = default;
virtual ~Animation() = default;
QWidget * widget() const { return m_widget; }
bool running() const { return m_running; }
const QTime &startTime() const { return m_startTime; }
void setRunning(bool val) { m_running = val; }
void setWidget(QWidget *widget) { m_widget = widget; }
void setStartTime(const QTime &startTime) { m_startTime = startTime; }
virtual void paint(QPainter *painter, const QStyleOption *option);
protected:
void drawBlendedImage(QPainter *painter, const QRect &rect, float value);
QTime m_startTime;
QPointer<QWidget> m_widget;
QImage m_primaryImage;
QImage m_secondaryImage;
QImage m_tempImage;
bool m_running = true;
};
// Handles state transition animations
class Transition : public Animation
{
public :
Transition() = default;
~Transition() override = default;
void setDuration(int duration) { m_duration = duration; }
void setStartImage(const QImage &image) { m_primaryImage = image; }
void setEndImage(const QImage &image) { m_secondaryImage = image; }
void paint(QPainter *painter, const QStyleOption *option) override;
int duration() const { return m_duration; }
int m_duration = 100; //set time in ms to complete a state transition
};
class StyleAnimator : public QObject
{
Q_OBJECT
public:
StyleAnimator(QObject *parent = nullptr) : QObject(parent) {}
void timerEvent(QTimerEvent *) override;
void startAnimation(Animation *);
void stopAnimation(const QWidget *);
Animation* widgetAnimation(const QWidget *) const;
private:
QBasicTimer animationTimer;
QList <Animation*> animations;
};
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