1 /***************************************************************************
2 * Copyright (C) 2005-2019 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 ***************************************************************************/
21 #include "columnhandleitem.h"
23 #include <QApplication>
25 #include <QGraphicsSceneHoverEvent>
31 ColumnHandleItem::ColumnHandleItem(qreal w, QGraphicsItem* parent)
32 : QGraphicsObject(parent)
34 , _boundingRect(-_width / 2, 0, _width, 0)
40 , _animation(new QPropertyAnimation(this, "opacity", this))
42 setAcceptHoverEvents(true);
44 setCursor(QCursor(Qt::OpenHandCursor));
46 _animation->setStartValue(0);
47 _animation->setEndValue(1);
48 _animation->setDirection(QPropertyAnimation::Forward);
49 _animation->setDuration(350);
50 _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);
62 void ColumnHandleItem::setXLimits(qreal min, qreal max)
66 // if(x() < min) setPos(min, 0);
67 // else if(x() > max) setPos(max - width(), 0);
70 void ColumnHandleItem::sceneRectChanged(const QRectF& rect)
72 prepareGeometryChange();
73 _boundingRect = QRectF(-_width / 2, rect.y(), _width, rect.height());
76 void ColumnHandleItem::setOpacity(qreal opacity)
82 void ColumnHandleItem::mouseMoveEvent(QGraphicsSceneMouseEvent* event)
84 if (event->buttons() & Qt::LeftButton && _moving) {
85 qreal newx = event->scenePos().x() - _offset;
88 else if (newx + width() > _maxXPos)
89 newx = _maxXPos - width();
98 void ColumnHandleItem::mousePressEvent(QGraphicsSceneMouseEvent* event)
100 if (event->buttons() & Qt::LeftButton) {
101 QApplication::setOverrideCursor(Qt::ClosedHandCursor);
103 _offset = event->pos().x();
111 void ColumnHandleItem::mouseReleaseEvent(QGraphicsSceneMouseEvent* event)
115 QRectF sceneBRect = _boundingRect.translated(x(), 0);
116 _sceneLeft = sceneBRect.left();
117 _sceneRight = sceneBRect.right();
118 emit positionChanged(x());
119 QApplication::restoreOverrideCursor();
127 void ColumnHandleItem::hoverEnterEvent(QGraphicsSceneHoverEvent* event)
131 _animation->setDirection(QPropertyAnimation::Forward);
135 void ColumnHandleItem::hoverLeaveEvent(QGraphicsSceneHoverEvent* event)
139 _animation->setDirection(QPropertyAnimation::Backward);
143 void ColumnHandleItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
148 QLinearGradient gradient(boundingRect().topLeft(), boundingRect().topRight());
149 QColor color = QApplication::palette().windowText().color();
150 color.setAlphaF(_opacity);
151 gradient.setColorAt(0, Qt::transparent);
152 gradient.setColorAt(0.45, color);
153 gradient.setColorAt(0.55, color);
154 gradient.setColorAt(1, Qt::transparent);
155 painter->fillRect(boundingRect(), gradient);