/***************************************************************************
-* Copyright (C) 2005-08 by the Quassel IRC Team *
+* Copyright (C) 2005-09 by the Quassel Project *
* devel@quassel-irc.org *
* *
* This program is free software; you can redistribute it and/or modify *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
+#include "columnhandleitem.h"
+
+#include <QApplication>
#include <QCursor>
#include <QGraphicsScene>
#include <QGraphicsSceneHoverEvent>
#include <QPainter>
+#include <QPalette>
#include <QDebug>
-#include "columnhandleitem.h"
-
ColumnHandleItem::ColumnHandleItem(qreal w, QGraphicsItem *parent)
: QGraphicsItem(parent),
_width(w),
+ _boundingRect(-_width/2, 0, _width, 0),
_hover(0),
- _timeLine(150)
+ _moving(false),
+ _minXPos(0),
+ _maxXPos(0),
+ _timeLine(350),
+ _rulerColor(QApplication::palette().windowText().color())
{
+ _timeLine.setUpdateInterval(20);
+
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, 0);
+ QRectF sceneBRect = _boundingRect.translated(x(), 0);
+ _sceneLeft = sceneBRect.left();
+ _sceneRight = sceneBRect.right();
+}
+
+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) {
- if(rect.height() != boundingRect().height())
- prepareGeometryChange();
+ prepareGeometryChange();
+ _boundingRect = QRectF(-_width/2, rect.y(), _width, rect.height());
}
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));
+ QRectF sceneBRect = _boundingRect.translated(x(), 0);
+ _sceneLeft = sceneBRect.left();
+ _sceneRight = sceneBRect.right();
+ emit positionChanged(x());
+ 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(boundingRect().topLeft(), boundingRect().topRight());
+ QColor _rulerColor = QApplication::palette().windowText().color();
+ _rulerColor.setAlphaF(_hover);
+ gradient.setColorAt(0, Qt::transparent);
+ gradient.setColorAt(0.4, _rulerColor);
+ gradient.setColorAt(0.6, _rulerColor);
+ gradient.setColorAt(1, Qt::transparent);
+ painter->fillRect(boundingRect(), gradient);
+}
+