#include <QCursor>
#include <QGraphicsScene>
+#include <QGraphicsSceneHoverEvent>
#include <QPainter>
#include <QDebug>
#include "columnhandleitem.h"
-ColumnHandleItem::ColumnHandleItem(qreal w, QGraphicsItem *parent) : QGraphicsItem(parent) {
- _width = w;
+ColumnHandleItem::ColumnHandleItem(qreal w, QGraphicsItem *parent)
+ : QGraphicsItem(parent),
+ _width(w),
+ _hover(0),
+ _timeLine(150)
+{
+ setAcceptsHoverEvents(true);
setZValue(10);
setCursor(QCursor(Qt::OpenHandCursor));
setFlag(ItemIsMovable);
+
+ connect(&_timeLine, SIGNAL(valueChanged(qreal)), this, SLOT(hoverChanged(qreal)));
}
void ColumnHandleItem::setXPos(qreal xpos) {
}
void ColumnHandleItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
-
QGraphicsItem::mouseMoveEvent(event);
}
Q_UNUSED(option);
Q_UNUSED(widget);
- painter->drawRect(boundingRect());
+ QLinearGradient gradient(0, 0, width(), 0);
+ gradient.setColorAt(0.25, Qt::transparent);
+ gradient.setColorAt(0.5, QColor(0, 0, 0, _hover * 200));
+ gradient.setColorAt(0.75, Qt::transparent);
+ painter->fillRect(boundingRect(), gradient);
+}
+void ColumnHandleItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event) {
+ Q_UNUSED(event);
+ _timeLine.setDirection(QTimeLine::Forward);
+ if(_timeLine.state() != QTimeLine::Running)
+ _timeLine.start();
}
+
+void ColumnHandleItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event) {
+ Q_UNUSED(event);
+
+ _timeLine.setDirection(QTimeLine::Backward);
+ if(_timeLine.state() != QTimeLine::Running)
+ _timeLine.start();
+}
+
+void ColumnHandleItem::hoverChanged(qreal value) {
+ _hover = value;
+ update();
+}
+
#ifndef COLUMNHANDLEITEM_H_
#define COLUMNHANDLEITEM_H_
+#include <QObject>
#include <QGraphicsItem>
-
-class ColumnHandleItem : public QGraphicsItem {
-
- public:
- ColumnHandleItem(qreal width, QGraphicsItem *parent = 0);
-
- inline qreal width() const;
- inline QRectF boundingRect() const;
- void setXPos(qreal xpos);
-
- void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
- void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
- void mousePressEvent(QGraphicsSceneMouseEvent *event);
- void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
-
- void sceneRectChanged(const QRectF &);
-
- private:
- qreal _width;
+#include <QGraphicsScene>
+#include <QTimeLine>
+
+class ColumnHandleItem : public QObject, public QGraphicsItem {
+ Q_OBJECT
+
+public:
+ ColumnHandleItem(qreal width, QGraphicsItem *parent = 0);
+
+ inline qreal width() const { return _width; }
+ inline QRectF boundingRect() const { return QRectF(0, 0, _width, scene()->height()); }
+ void setXPos(qreal xpos);
+
+ void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
+ void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
+ void mousePressEvent(QGraphicsSceneMouseEvent *event);
+ void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
+
+ void sceneRectChanged(const QRectF &);
+
+protected:
+ void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
+ void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
+
+private slots:
+ void hoverChanged(qreal value);
+
+private:
+ qreal _width;
+ qreal _hover;
+ QTimeLine _timeLine;
};
-qreal ColumnHandleItem::width() const {
- return _width;
-}
-
-QRectF ColumnHandleItem::boundingRect() const {
- return QRectF(0, 0, _width, scene()->height());
-}
-
#endif