itsmattkc
b713ab47eb
When adjusting a slider, keyframe time, or curve value, it is undesirable to re-cache the entire affected area while the user is still dragging UI objects. Since the video is unlikely to be playing, the priority must go to the currently active frame so the user gets visual feedback on the rendered image as soon as possible. This was implemented in some areas, but this commit should have that functionality in all areas.
108 lines
2.4 KiB
C++
108 lines
2.4 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 SetScale(const double& scale, bool center_on_playhead);
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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 SetTimebase(const rational& timebase);
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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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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(double scale);
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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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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 center the horizontal scroll bar on the playhead's current position
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*/
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void CenterScrollOnPlayhead();
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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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