itsmattkc
23001386d0
This commit implements much of the base functionality for creating and destroying keyframes in the UI. Not complete yet, but getting there.
69 lines
1.7 KiB
C++
69 lines
1.7 KiB
C++
#include "keyframeviewitem.h"
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#include <QApplication>
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#include <QPainter>
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#include <QStyleOptionGraphicsItem>
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#include <QWidget>
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#include "common/qtversionabstraction.h"
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KeyframeViewItem::KeyframeViewItem(NodeKeyframePtr key, qreal vcenter, QGraphicsItem *parent) :
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QGraphicsRectItem(parent),
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key_(key),
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scale_(1.0),
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middle_(vcenter)
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{
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keyframe_size_ = QFontMetricsWidth(qApp->fontMetrics(), "Oi");
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setFlag(QGraphicsItem::ItemIsSelectable);
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setFlag(QGraphicsItem::ItemIsMovable);
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connect(key.get(), SIGNAL(TimeChanged(const rational&)), this, SLOT(UpdateRect()));
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UpdateRect();
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}
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void KeyframeViewItem::SetScale(double scale)
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{
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scale_ = scale;
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UpdateRect();
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}
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void KeyframeViewItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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painter->setPen(Qt::black);
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if (option->state & QStyle::State_Selected) {
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painter->setBrush(widget->palette().highlight());
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} else {
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painter->setBrush(widget->palette().text());
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}
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switch (key_->type()) {
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case NodeKeyframe::kLinear:
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{
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QPointF points[] = {
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QPointF(rect().center().x(), rect().top()),
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QPointF(rect().right(), rect().center().y()),
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QPointF(rect().center().x(), rect().bottom()),
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QPointF(rect().left(), rect().center().y())
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};
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painter->drawPolygon(points, 4);
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break;
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}
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case NodeKeyframe::kBezier:
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painter->drawEllipse(rect());
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break;
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case NodeKeyframe::kHold:
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painter->drawRect(rect());
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break;
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}
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}
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void KeyframeViewItem::UpdateRect()
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{
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double x_center = key_->time().toDouble() * scale_;
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setRect(x_center - keyframe_size_/2, middle_ - keyframe_size_/2, keyframe_size_, keyframe_size_);
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}
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