103 lines
2.3 KiB
C++
103 lines
2.3 KiB
C++
#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 "timelineplayhead.h"
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#include "timelineviewenditem.h"
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#include "widget/timelinewidget/timelinescaledobject.h"
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class TimelineViewBase : public QGraphicsView, 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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void SetEndTime(const rational& length);
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static const double kMaximumScale;
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public slots:
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void SetTime(const int64_t time);
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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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bool HandleZoomFromScroll(QWheelEvent* event);
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bool WheelEventIsAZoomEvent(QWheelEvent* event);
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void SetLimitYAxis(bool e);
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rational GetPlayheadTime() const;
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void SetDefaultDragMode(DragMode mode);
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const DragMode& GetDefaultDragMode() 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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bool HandPress(QMouseEvent* event);
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bool HandMove(QMouseEvent* event);
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bool HandRelease(QMouseEvent* event);
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virtual void ToolChangedEvent(Tool::Item tool);
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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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bool dragging_hand_;
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DragMode pre_hand_drag_mode_;
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TimelineViewEndItem* end_item_;
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QGraphicsScene scene_;
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bool limit_y_axis_;
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DragMode default_drag_mode_;
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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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void ApplicationToolChanged(Tool::Item tool);
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};
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#endif // TIMELINEVIEWBASE_H
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