1 /***************************************************************************
2 * Copyright (C) 2005-2018 by the Quassel Project *
3 * devel@quassel-irc.org *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
19 ***************************************************************************/
22 #include "columnhandleitem.h"
24 #include <QApplication>
26 #include <QGraphicsSceneHoverEvent>
30 ColumnHandleItem::ColumnHandleItem(qreal w, QGraphicsItem *parent)
31 : QGraphicsObject(parent),
33 _boundingRect(-_width/2, 0, _width, 0),
39 _animation(new QPropertyAnimation(this, "opacity", this))
41 setAcceptHoverEvents(true);
43 setCursor(QCursor(Qt::OpenHandCursor));
45 _animation->setStartValue(0);
46 _animation->setEndValue(1);
47 _animation->setDirection(QPropertyAnimation::Forward);
48 _animation->setDuration(350);
49 _animation->setEasingCurve(QEasingCurve::InOutSine);
53 void ColumnHandleItem::setXPos(qreal xpos)
56 QRectF sceneBRect = _boundingRect.translated(x(), 0);
57 _sceneLeft = sceneBRect.left();
58 _sceneRight = sceneBRect.right();
59 emit positionChanged(xpos);
63 void ColumnHandleItem::setXLimits(qreal min, qreal max)
67 //if(x() < min) setPos(min, 0);
68 //else if(x() > max) setPos(max - width(), 0);
72 void ColumnHandleItem::sceneRectChanged(const QRectF &rect)
74 prepareGeometryChange();
75 _boundingRect = QRectF(-_width/2, rect.y(), _width, rect.height());
79 void ColumnHandleItem::setOpacity(qreal opacity)
86 void ColumnHandleItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
88 if (event->buttons() & Qt::LeftButton && _moving) {
89 qreal newx = event->scenePos().x() - _offset;
92 else if (newx + width() > _maxXPos)
93 newx = _maxXPos - width();
103 void ColumnHandleItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
105 if (event->buttons() & Qt::LeftButton) {
106 QApplication::setOverrideCursor(Qt::ClosedHandCursor);
108 _offset = event->pos().x();
117 void ColumnHandleItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
121 QRectF sceneBRect = _boundingRect.translated(x(), 0);
122 _sceneLeft = sceneBRect.left();
123 _sceneRight = sceneBRect.right();
124 emit positionChanged(x());
125 QApplication::restoreOverrideCursor();
134 void ColumnHandleItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
138 _animation->setDirection(QPropertyAnimation::Forward);
143 void ColumnHandleItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
147 _animation->setDirection(QPropertyAnimation::Backward);
152 void ColumnHandleItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
157 QLinearGradient gradient(boundingRect().topLeft(), boundingRect().topRight());
158 QColor color = QApplication::palette().windowText().color();
159 color.setAlphaF(_opacity);
160 gradient.setColorAt(0, Qt::transparent);
161 gradient.setColorAt(0.45, color);
162 gradient.setColorAt(0.55, color);
163 gradient.setColorAt(1, Qt::transparent);
164 painter->fillRect(boundingRect(), gradient);