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| |
| #include "layoutitem.h" |
| |
| #include <QGradient> |
| #include <QPainter> |
| |
| //! [0] |
| LayoutItem::LayoutItem(QGraphicsItem *parent) |
| : QGraphicsLayoutItem(), QGraphicsItem(parent), |
| m_pix(QPixmap(QLatin1String(":/images/block.png"))) |
| { |
| setGraphicsItem(this); |
| } |
| //! [0] |
| |
| //! [1] |
| void LayoutItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, |
| QWidget *widget) |
| { |
| Q_UNUSED(widget); |
| Q_UNUSED(option); |
| |
| QRectF frame(QPointF(0, 0), geometry().size()); |
| const QSize pmSize = m_pix.size(); |
| QGradientStops stops; |
| //! [1] |
| |
| //! [2] |
| // paint a background rect (with gradient) |
| QLinearGradient gradient(frame.topLeft(), frame.topLeft() + QPointF(200,200)); |
| stops << QGradientStop(0.0, QColor(60, 60, 60)); |
| stops << QGradientStop(frame.height() / 2 / frame.height(), QColor(102, 176, 54)); |
| |
| //stops << QGradientStop(((frame.height() + h)/2 )/frame.height(), QColor(157, 195, 55)); |
| stops << QGradientStop(1.0, QColor(215, 215, 215)); |
| gradient.setStops(stops); |
| painter->setBrush(QBrush(gradient)); |
| painter->drawRoundedRect(frame, 10.0, 10.0); |
| |
| // paint a rect around the pixmap (with gradient) |
| QPointF pixpos = frame.center() - (QPointF(pmSize.width(), pmSize.height()) / 2); |
| QRectF innerFrame(pixpos, pmSize); |
| innerFrame.adjust(-4, -4, 4, 4); |
| gradient.setStart(innerFrame.topLeft()); |
| gradient.setFinalStop(innerFrame.bottomRight()); |
| stops.clear(); |
| stops << QGradientStop(0.0, QColor(215, 255, 200)); |
| stops << QGradientStop(0.5, QColor(102, 176, 54)); |
| stops << QGradientStop(1.0, QColor(0, 0, 0)); |
| gradient.setStops(stops); |
| painter->setBrush(QBrush(gradient)); |
| painter->drawRoundedRect(innerFrame, 10.0, 10.0); |
| painter->drawPixmap(pixpos, m_pix); |
| } |
| //! [2] |
| |
| //! [3] |
| QRectF LayoutItem::boundingRect() const |
| { |
| return QRectF(QPointF(0, 0), geometry().size()); |
| } |
| //! [3] |
| |
| //! [4] |
| void LayoutItem::setGeometry(const QRectF &geom) |
| { |
| prepareGeometryChange(); |
| QGraphicsLayoutItem::setGeometry(geom); |
| setPos(geom.topLeft()); |
| } |
| //! [4] |
| |
| //! [5] |
| QSizeF LayoutItem::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const |
| { |
| switch (which) { |
| case Qt::MinimumSize: |
| case Qt::PreferredSize: |
| // Do not allow a size smaller than the pixmap with two frames around it. |
| return m_pix.size() + QSize(12, 12); |
| case Qt::MaximumSize: |
| return QSizeF(1000,1000); |
| default: |
| break; |
| } |
| return constraint; |
| } |
| //! [5] |