itsmattkc
4b48a73db3
Later classes will feature similar functionality to the TimelineView, moving them to a base class that can be easily reused seems like a good idea.
81 lines
1.9 KiB
C++
81 lines
1.9 KiB
C++
#include "timelineviewbase.h"
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#include <QGraphicsRectItem>
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#include <QMouseEvent>
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#include "common/timecodefunctions.h"
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TimelineViewBase::TimelineViewBase(QWidget *parent) :
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QGraphicsView(parent),
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playhead_(0),
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playhead_scene_left_(-1),
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playhead_scene_right_(-1)
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{
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}
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void TimelineViewBase::SetTimebase(const rational &timebase)
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{
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SetTimebaseInternal(timebase);
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// Timebase influences position/visibility of playhead
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viewport()->update();
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}
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void TimelineViewBase::SetTime(const int64_t time)
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{
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playhead_ = time;
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// Force redraw for playhead
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viewport()->update();
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}
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void TimelineViewBase::drawForeground(QPainter *painter, const QRectF &rect)
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{
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QGraphicsView::drawForeground(painter, rect);
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if (!timebase().isNull()) {
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double width = TimeToScene(timebase());
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playhead_scene_left_ = TimeToScene(rational(playhead_ * timebase().numerator(), timebase().denominator()));
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playhead_scene_right_ = playhead_scene_left_ + width;
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playhead_style_.Draw(painter, QRectF(playhead_scene_left_, rect.top(), width, rect.height()));
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}
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}
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rational TimelineViewBase::GetPlayheadTime()
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{
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return rational(playhead_ * timebase().numerator(), timebase().denominator());
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}
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bool TimelineViewBase::PlayheadPress(QMouseEvent *event)
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{
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QPointF scene_pos = mapToScene(event->pos());
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dragging_playhead_ = (scene_pos.x() >= playhead_scene_left_ && scene_pos.x() < playhead_scene_right_);
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return dragging_playhead_;
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}
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bool TimelineViewBase::PlayheadMove(QMouseEvent *event)
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{
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if (!dragging_playhead_) {
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return false;
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}
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QPointF scene_pos = mapToScene(event->pos());
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rational mouse_time = SceneToTime(scene_pos.x());
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int64_t target_ts = olive::time_to_timestamp(mouse_time, timebase());
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SetTime(target_ts);
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emit TimeChanged(target_ts);
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return true;
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}
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bool TimelineViewBase::PlayheadRelease(QMouseEvent *event)
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{
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return dragging_playhead_;
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}
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