Fix compiler warning when compiling without QCA support
[quassel.git] / src / qtui / columnhandleitem.cpp
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20
21 #include "chatview.h"
22 #include "columnhandleitem.h"
23
24 #include <QApplication>
25 #include <QCursor>
26 #include <QGraphicsSceneHoverEvent>
27 #include <QPainter>
28 #include <QPalette>
29
30 ColumnHandleItem::ColumnHandleItem(qreal w, QGraphicsItem *parent)
31     : QGraphicsObject(parent),
32     _width(w),
33     _boundingRect(-_width/2, 0, _width, 0),
34     _moving(false),
35     _offset(0),
36     _minXPos(0),
37     _maxXPos(0),
38     _opacity(0),
39     _animation(new QPropertyAnimation(this, "opacity", this))
40 {
41     setAcceptHoverEvents(true);
42     setZValue(10);
43     setCursor(QCursor(Qt::OpenHandCursor));
44
45     _animation->setStartValue(0);
46     _animation->setEndValue(1);
47     _animation->setDirection(QPropertyAnimation::Forward);
48     _animation->setDuration(350);
49     _animation->setEasingCurve(QEasingCurve::InOutSine);
50
51     //connect(&_timeLine, SIGNAL(valueChanged(qreal)), this, SLOT(hoverChanged(qreal)));
52 }
53
54
55 void ColumnHandleItem::setXPos(qreal xpos)
56 {
57     setPos(xpos, 0);
58     QRectF sceneBRect = _boundingRect.translated(x(), 0);
59     _sceneLeft = sceneBRect.left();
60     _sceneRight = sceneBRect.right();
61     emit positionChanged(xpos);
62 }
63
64
65 void ColumnHandleItem::setXLimits(qreal min, qreal max)
66 {
67     _minXPos = min;
68     _maxXPos = max;
69     //if(x() < min) setPos(min, 0);
70     //else if(x() > max) setPos(max - width(), 0);
71 }
72
73
74 void ColumnHandleItem::sceneRectChanged(const QRectF &rect)
75 {
76     prepareGeometryChange();
77     _boundingRect = QRectF(-_width/2, rect.y(), _width, rect.height());
78 }
79
80
81 void ColumnHandleItem::setOpacity(qreal opacity)
82 {
83     _opacity = opacity;
84     update();
85 }
86
87
88 void ColumnHandleItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
89 {
90     if (event->buttons() & Qt::LeftButton && _moving) {
91         qreal newx = event->scenePos().x() - _offset;
92         if (newx < _minXPos)
93             newx = _minXPos;
94         else if (newx + width() > _maxXPos)
95             newx = _maxXPos - width();
96         setPos(newx, 0);
97         event->accept();
98     }
99     else {
100         event->ignore();
101     }
102 }
103
104
105 void ColumnHandleItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
106 {
107     if (event->buttons() & Qt::LeftButton) {
108         QApplication::setOverrideCursor(Qt::ClosedHandCursor);
109         _moving = true;
110         _offset = event->pos().x();
111         event->accept();
112     }
113     else {
114         event->ignore();
115     }
116 }
117
118
119 void ColumnHandleItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
120 {
121     if (_moving) {
122         _moving = false;
123         QRectF sceneBRect = _boundingRect.translated(x(), 0);
124         _sceneLeft = sceneBRect.left();
125         _sceneRight = sceneBRect.right();
126         emit positionChanged(x());
127         QApplication::restoreOverrideCursor();
128         event->accept();
129     }
130     else {
131         event->ignore();
132     }
133 }
134
135
136 void ColumnHandleItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
137 {
138     Q_UNUSED(event);
139
140     _animation->setDirection(QPropertyAnimation::Forward);
141     _animation->start();
142 }
143
144
145 void ColumnHandleItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
146 {
147     Q_UNUSED(event);
148
149     _animation->setDirection(QPropertyAnimation::Backward);
150     _animation->start();
151 }
152
153
154 void ColumnHandleItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
155 {
156     Q_UNUSED(option);
157     Q_UNUSED(widget);
158
159     QLinearGradient gradient(boundingRect().topLeft(), boundingRect().topRight());
160     QColor color = QApplication::palette().windowText().color();
161     color.setAlphaF(_opacity);
162     gradient.setColorAt(0, Qt::transparent);
163     gradient.setColorAt(0.45, color);
164     gradient.setColorAt(0.55, color);
165     gradient.setColorAt(1, Qt::transparent);
166     painter->fillRect(boundingRect(), gradient);
167 }