imageitem.cpp Example File

drilldown/imageitem.cpp
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#include "imageitem.h" ImageItem::ImageItem(int id, const QPixmap &pixmap, QGraphicsItem *parent) : QGraphicsPixmapItem(pixmap, parent) { recordId = id; setAcceptHoverEvents(true); timeLine.setDuration(150); timeLine.setFrameRange(0, 150); connect(&timeLine, &QTimeLine::frameChanged, this, &ImageItem::setFrame); connect(&timeLine, &QTimeLine::finished, this, &ImageItem::updateItemPosition); adjust(); } void ImageItem::hoverEnterEvent(QGraphicsSceneHoverEvent * /*event*/) { timeLine.setDirection(QTimeLine::Forward); if (z != 1.0) { z = 1.0; updateItemPosition(); } if (timeLine.state() == QTimeLine::NotRunning) timeLine.start(); } void ImageItem::hoverLeaveEvent(QGraphicsSceneHoverEvent * /*event*/) { timeLine.setDirection(QTimeLine::Backward); if (z != 0.0) z = 0.0; if (timeLine.state() == QTimeLine::NotRunning) timeLine.start(); } void ImageItem::setFrame(int frame) { adjust(); QPointF center = boundingRect().center(); setTransform(QTransform::fromTranslate(center.x(), center.y()), true); setTransform(QTransform::fromScale(1 + frame / 330.0, 1 + frame / 330.0), true); setTransform(QTransform::fromTranslate(-center.x(), -center.y()), true); } void ImageItem::adjust() { QMatrix matrix; matrix.scale(120/ boundingRect().width(), 120/ boundingRect().height()); setMatrix(matrix); } int ImageItem::id() const { return recordId; } void ImageItem::updateItemPosition() { setZValue(z); }