#include "columnhandleitem.h"
#include "qtui.h"
+const qreal minContentsWidth = 200;
+
ChatScene::ChatScene(QAbstractItemModel *model, QObject *parent) : QGraphicsScene(parent), _model(model) {
_width = 0;
connect(this, SIGNAL(sceneRectChanged(const QRectF &)), this, SLOT(rectChanged(const QRectF &)));
secondColHandle = new ColumnHandleItem(QtUi::style()->secondColumnSeparator()); addItem(secondColHandle);
firstColHandle->setXPos(firstColHandlePos);
+ firstColHandle->setXLimits(0, secondColHandlePos);
secondColHandle->setXPos(secondColHandlePos);
+ secondColHandle->setXLimits(firstColHandlePos, width() - minContentsWidth);
emit heightChanged(height());
}
_height += line->setGeometry(_width, firstColHandlePos, secondColHandlePos);
}
setSceneRect(QRectF(0, 0, w, _height));
+ secondColHandle->setXLimits(firstColHandlePos, width() - minContentsWidth);
emit heightChanged(_height);
}
: QGraphicsItem(parent),
_width(w),
_hover(0),
- _timeLine(150)
+ _timeLine(150),
+ _moving(false),
+ _minXPos(0),
+ _maxXPos(0)
{
setAcceptsHoverEvents(true);
setZValue(10);
setCursor(QCursor(Qt::OpenHandCursor));
- setFlag(ItemIsMovable);
connect(&_timeLine, SIGNAL(valueChanged(qreal)), this, SLOT(hoverChanged(qreal)));
}
void ColumnHandleItem::setXPos(qreal xpos) {
- setPos(xpos - width()/2, (qreal)0);
+ setPos(xpos - width()/2, 0);
+}
+
+void ColumnHandleItem::setXLimits(qreal min, qreal max) {
+ _minXPos = min;
+ _maxXPos = max;
+ //if(x() < min) setPos(min, 0);
+ //else if(x() > max) setPos(max - width(), 0);
}
void ColumnHandleItem::sceneRectChanged(const QRectF &rect) {
}
void ColumnHandleItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
- QGraphicsItem::mouseMoveEvent(event);
+ if(event->buttons() & Qt::LeftButton && _moving) {
+ if(contains(event->lastPos())) {
+ qreal newx = x() + (event->scenePos() - event->lastScenePos()).x();
+ if(newx < _minXPos) newx = _minXPos;
+ else if(newx + width() > _maxXPos) newx = _maxXPos - width();
+ setPos(newx, 0);
+ }
+ event->accept();
+ } else {
+ event->ignore();
+ }
}
-void ColumnHandleItem::mousePressEvent(QGraphicsSceneMouseEvent *event) { qDebug() << "pressed!";
- setCursor(QCursor(Qt::ClosedHandCursor));
- QGraphicsItem::mousePressEvent(event);
+void ColumnHandleItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
+ if(event->buttons() & Qt::LeftButton) {
+ setCursor(QCursor(Qt::ClosedHandCursor));
+ _moving = true;
+ event->accept();
+ } else {
+ event->ignore();
+ }
}
void ColumnHandleItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
- setCursor(QCursor(Qt::OpenHandCursor));
- QGraphicsItem::mouseReleaseEvent(event);
-}
-
-void ColumnHandleItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
- Q_UNUSED(option);
- Q_UNUSED(widget);
-
- 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);
+ if(_moving) {
+ _moving = false;
+ setCursor(QCursor(Qt::OpenHandCursor));
+ event->accept();
+ } else {
+ event->ignore();
+ }
}
void ColumnHandleItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event) {
update();
}
+void ColumnHandleItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
+ Q_UNUSED(option);
+ Q_UNUSED(widget);
+
+ 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);
+}
+
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 &);
+ void setXLimits(qreal min, qreal max);
protected:
void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
+ void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
+ void mousePressEvent(QGraphicsSceneMouseEvent *event);
+ void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
private slots:
void hoverChanged(qreal value);
private:
qreal _width;
qreal _hover;
+ bool _moving;
+ qreal _minXPos, _maxXPos;
QTimeLine _timeLine;
};