1 files changed, 104 insertions, 0 deletions
diff --git a/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/ui/PlayHead.cpp b/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/ui/PlayHead.cpp
new file mode 100644
index 00000000..3ddfdcad
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+++ b/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/ui/PlayHead.cpp
@@ -0,0 +1,104 @@
+/****************************************************************************
+**
+** 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;
+}