124 lines
2.9 KiB
C++
124 lines
2.9 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2019 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#ifndef TIMELINEVIEWBASE_H
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#define TIMELINEVIEWBASE_H
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#include <QGraphicsView>
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#include "core.h"
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#include "handmovableview.h"
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#include "timelineplayhead.h"
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#include "widget/timelinewidget/snapservice.h"
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#include "widget/timelinewidget/timelinescaledobject.h"
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OLIVE_NAMESPACE_ENTER
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class TimelineViewBase : public HandMovableView, public TimelineScaledObject
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{
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Q_OBJECT
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public:
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TimelineViewBase(QWidget* parent = nullptr);
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static const double kMaximumScale;
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void EnableSnap(const QList<rational>& points);
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void DisableSnap();
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bool IsSnapped() const
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{
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return snapped_;
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}
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void SetSnapService(SnapService* service);
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public slots:
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void SetTime(const int64_t time);
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void SetEndTime(const rational& length);
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signals:
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void TimeChanged(const int64_t& time);
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void ScaleChanged(double scale);
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void RequestCenterScrollOnPlayhead();
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protected:
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virtual void drawForeground(QPainter *painter, const QRectF &rect) override;
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virtual void resizeEvent(QResizeEvent *event) override;
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virtual void ScaleChangedEvent(const double& scale) override;
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virtual void SceneRectUpdateEvent(QRectF&){}
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bool HandleZoomFromScroll(QWheelEvent* event);
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bool WheelEventIsAZoomEvent(QWheelEvent* event);
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rational GetPlayheadTime() const;
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bool PlayheadPress(QMouseEvent* event);
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bool PlayheadMove(QMouseEvent* event);
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bool PlayheadRelease(QMouseEvent* event);
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virtual void TimebaseChangedEvent(const rational &) override;
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private:
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qreal GetPlayheadX();
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int64_t playhead_;
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TimelinePlayhead playhead_style_;
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double playhead_scene_left_;
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double playhead_scene_right_;
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bool dragging_playhead_;
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QGraphicsScene scene_;
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bool snapped_;
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QList<rational> snap_time_;
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rational end_time_;
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SnapService* snap_service_;
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private slots:
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/**
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* @brief Slot called whenever the view resizes or the scene contents change to enforce minimum scene sizes
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*/
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void UpdateSceneRect();
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/**
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* @brief Slot to handle page scrolling of the playhead
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*
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* If the playhead is outside the current scroll bounds, this function will scroll to where it is. Otherwise it will
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* do nothing.
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*/
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void PageScrollToPlayhead();
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};
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OLIVE_NAMESPACE_EXIT
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#endif // TIMELINEVIEWBASE_H
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