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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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef TIMELINEGRAPHICSSCENE_H
#define TIMELINEGRAPHICSSCENE_H
#include "TimelineWidget.h"
#include "RowTimeline.h"
#include "RowTypes.h"
#include "TimelineConstants.h"
#include "MouseCursor.h"
#include <QtWidgets/qgraphicsscene.h>
#include <QtCore/qlist.h>
class Ruler;
class PlayHead;
class TreeHeader;
class RowTree;
class SelectionRect;
class RowMover;
class RowManager;
class KeyframeManager;
class TimelineControl;
class IKeyframesManager;
struct Keyframe;
QT_FORWARD_DECLARE_CLASS(QGraphicsLinearLayout)
QT_FORWARD_DECLARE_CLASS(QGraphicsView)
class TimelineGraphicsScene : public QGraphicsScene
{
Q_OBJECT
public:
explicit TimelineGraphicsScene(TimelineWidget *timelineWidget);
void setTimelineScale(int scale);
void updateTimelineLayoutWidth();
void addNewLayer();
Ruler *ruler() const;
PlayHead *playHead() const;
RowManager *rowManager() const;
RowMover *rowMover() const;
QGraphicsWidget *widgetRoot() const;
KeyframeManager *keyframeManager() const;
QGraphicsLinearLayout *layoutTree() const;
QGraphicsLinearLayout *layoutTimeline() const;
TreeHeader *treeHeader() const;
double treeWidth() const;
void updateTreeWidth(double x);
void setMouseCursor(CMouseCursor::Qt3DSMouseCursor cursor);
void resetMouseCursor();
void updateSnapSteps();
protected:
bool event(QEvent *event) override;
void mousePressEvent(QGraphicsSceneMouseEvent *event) override;
void mouseMoveEvent(QGraphicsSceneMouseEvent *event) override;
void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;
void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) override;
void keyPressEvent(QKeyEvent *keyEvent) override;
void keyReleaseEvent(QKeyEvent *keyEvent) override;
void contextMenuEvent(QGraphicsSceneContextMenuEvent *event) override;
private:
void commitMoveRows();
void updateHoverStatus(const QPointF &scenePos);
void snap(double &value, bool snapToPlayHead = true);
int nextRowDepth(int index);
bool lastRowInAParent(RowTree *rowAtIndex, int index);
bool validLayerMove(RowTree *rowAtIndex, RowTree *nextRowAtIndex);
RowTree *getNextSiblingRow(RowTree *row) const;
QGraphicsItem *getItemBelowType(TimelineItem::ItemType type,
QGraphicsItem *item,
const QPointF &scenePos);
void handleInsertKeyframe();
void handleDeleteChannelKeyframes();
void handleSetTimeBarTime();
void handleMakeComponent();
void handleCopyObjectPath();
void handleEditComponent();
void handleShySelected();
void handleLockSelected();
QGraphicsLinearLayout *m_layoutRoot;
QGraphicsLinearLayout *m_layoutTree;
QGraphicsLinearLayout *m_layoutTimeline;
TreeHeader *m_treeHeader;
Ruler *m_ruler;
PlayHead *m_playHead;
TimelineWidget *m_widgetTimeline;
QGraphicsWidget *m_widgetRoot;
RowMover *m_rowMover = nullptr;
RowTimeline *m_editedTimelineRow = nullptr;
SelectionRect *m_selectionRect;
RowManager *m_rowManager = nullptr;
KeyframeManager *m_keyframeManager = nullptr;
QPointF m_pressPos;
QList<double> m_snapSteps;
CMouseCursor::Qt3DSMouseCursor m_currentCursor;
TimelineControl *m_timelineControl = nullptr;
bool m_rulerPressed = false;
bool m_keyframePressed = false;
bool m_dragging = false;
TimelineControlType m_clickedTimelineControlType = TimelineControlType::None;
TreeControlType m_clickedTreeControlType = TreeControlType::None;
double m_pressPosInKeyframe;
double m_treeWidth = TimelineConstants::TREE_DEFAULT_W;
};
#endif // TIMELINEGRAPHICSSCENE_H
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