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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "PlayHead.h"
#include "Ruler.h"
#include "TimelineConstants.h"
#include "StudioPreferences.h"
#include "StudioUtils.h"
#include <QtGui/qpainter.h>
#include <QtGui/qcursor.h>
#include <QtWidgets/qwidget.h>
PlayHead::PlayHead(Ruler *ruler)
: QGraphicsRectItem()
, m_ruler(ruler)
{
setZValue(99);
setRect(-TimelineConstants::PLAYHEAD_W * .5, 0, TimelineConstants::PLAYHEAD_W, 0);
}
void PlayHead::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(option)
Q_UNUSED(widget)
bool hiResIcons = StudioUtils::devicePixelRatio(widget->window()->windowHandle()) > 1.0;
static const QPixmap pixHead = QPixmap(":/images/PlaybackHead.png");
static const QPixmap pixHead2x = QPixmap(":/images/PlaybackHead@2x.png");
static const int PLAY_HEAD_H = 999999; // theoretically big enough height
painter->drawPixmap(-TimelineConstants::PLAYHEAD_W * .5, 0, hiResIcons ? pixHead2x : pixHead);
painter->setPen(CStudioPreferences::timelinePlayheadLineColor());
painter->drawLine(0, 0, 0, PLAY_HEAD_H);
}
void PlayHead::setHeight(int height)
{
setRect(rect().x(), rect().y(), rect().width(), height);
}
void PlayHead::setTime(long time)
{
if (time < 0)
time = 0;
else if (time > m_ruler->duration())
time = m_ruler->duration();
m_time = time;
updatePosition();
}
void PlayHead::setPosition(double posX)
{
posX = qBound(TimelineConstants::RULER_EDGE_OFFSET, posX, m_ruler->duration()
* TimelineConstants::RULER_MILLI_W * m_ruler->timelineScale()
+ TimelineConstants::RULER_EDGE_OFFSET);
setX(m_ruler->x() + posX);
m_time = (posX - TimelineConstants::RULER_EDGE_OFFSET)
/ (TimelineConstants::RULER_MILLI_W * m_ruler->timelineScale());
}
void PlayHead::updatePosition()
{
setX(m_ruler->x() + TimelineConstants::RULER_EDGE_OFFSET
+ m_time * TimelineConstants::RULER_MILLI_W * m_ruler->timelineScale());
}
long PlayHead::time() const
{
return m_time;
}
int PlayHead::type() const
{
// Enable the use of qgraphicsitem_cast with this item.
return TimelineItem::TypePlayHead;
}
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