void QGraph::mouseReleaseEvent(QMouseEvent *e){
pushed &= ~e->button();
this->setCursor(QCursor(Qt::CrossCursor));
if(e->button() == Qt::LeftButton){
if((toViewport(press) - toViewport(e->pos())).isNull())
return;
QPoint p=toViewport(e->pos())+viewport.topLeft();
QPoint p1=toViewport(press)+viewport.topLeft();
viewport = QRect(p1, p);
if(viewport.bottom() > viewport.top()){
int a=viewport.bottom();
viewport.setBottom(viewport.top());
viewport.setTop(a);
}
if(viewport.left() > viewport.right()){
int a=viewport.left();
viewport.setLeft(viewport.right());
viewport.setRight(a);
}
update_scale();
update_points();
sendStatus(QString("(%1, %2)-(%3, %4)").arg(viewport.left()).arg(viewport.top()).arg(viewport.right()).arg(viewport.bottom()));
}
this->repaint(false);
}
void QtGradientStopsWidgetPrivate::setupMove(QtGradientStop *stop, int x)
{
m_model->setCurrentStop(stop);
int viewportX = qRound(toViewport(stop->position()));
m_moveOffset = x - viewportX;
QList<QtGradientStop *> stops = m_stops;
m_stops.clear();
QListIterator<QtGradientStop *> itStop(stops);
while (itStop.hasNext()) {
QtGradientStop *s = itStop.next();
if (m_model->isSelected(s) || s == stop) {
m_moveStops[s] = s->position() - stop->position();
m_stops.append(s);
} else {
m_moveOriginal[s->position()] = s->color();
}
}
itStop.toFront();
while (itStop.hasNext()) {
QtGradientStop *s = itStop.next();
if (!m_model->isSelected(s))
m_stops.append(s);
}
m_stops.removeAll(stop);
m_stops.prepend(stop);
}
void QtGradientStopsWidgetPrivate::ensureVisible(double x)
{
double viewX = toViewport(x);
if (viewX < 0 || viewX > q_ptr->viewport()->size().width()) {
int max = q_ptr->horizontalScrollBar()->maximum();
int newVal = qRound(x * (max + m_scaleFactor) - m_scaleFactor / 2);
q_ptr->horizontalScrollBar()->setValue(newVal);
}
}
void QGraph::mousePressEvent(QMouseEvent *e){
pushed |= e->button(); //Left=1; Right=1<<1=2; Center=1<<2=4; Compatibilize with 3d's graph?
// qDebug("%d", toViewport(e->pos()).x());
if(e->button() == Qt::LeftButton || e->button() == Qt::MidButton){
press = e->pos();
ant = toViewport(e->pos());
this->setCursor(QCursor(Qt::PointingHandCursor));
}
}
void QGraph::mouseMoveEvent(QMouseEvent *e){
mark=calcImage(fromWidget(e->pos()));
if(pushed & Qt::MidButton && ant != toViewport(e->pos())){
QPoint rel = e->pos() - press - (toWidget(.5,.5)-toWidget(0.,0.));
rel = toViewport(rel);
viewport.setLeft(viewport.left() - rel.x()); viewport.setRight(viewport.right() - rel.x());
viewport.setTop(viewport.top() - rel.y()); viewport.setBottom(viewport.bottom() - rel.y());
update_points();
press = e->pos();
ant = toViewport(e->pos());
valid=false;
sendStatus(QString("(%1, %2)-(%3, %4)").arg(viewport.left()).arg(viewport.top()).arg(viewport.right()).arg(viewport.bottom()));
} else if(pushed == Qt::LeftButton) {
last = e->pos();
} else if(pushed==0)
sendStatus(QString("x=%1 y=%2") .arg(mark.x(),3,'f',2).arg(mark.y(),3,'f',2));
this->repaint(false);
}
QtGradientStop *QtGradientStopsWidgetPrivate::stopAt(const QPoint &viewportPos) const
{
double posY = m_handleSize / 2;
QListIterator<QtGradientStop *> itStop(m_stops);
while (itStop.hasNext()) {
QtGradientStop *stop = itStop.next();
double posX = toViewport(stop->position());
double x = viewportPos.x() - posX;
double y = viewportPos.y() - posY;
if ((m_handleSize * m_handleSize / 4) > (x * x + y * y))
return stop;
}
return 0;
}
void QtGradientWidgetPrivate::paintPoint(QPainter *painter, const QPointF &point, double size) const
{
QPointF pf = toViewport(point);
QRectF rf = pointRect(pf, size);
QPen pen;
pen.setWidthF(1);
QColor alphaZero = Qt::white;
alphaZero.setAlpha(0);
painter->save();
painter->drawEllipse(rf);
/*
painter->save();
QLinearGradient lgV(0, rf.top(), 0, rf.bottom());
lgV.setColorAt(0, alphaZero);
lgV.setColorAt(0.25, Qt::white);
lgV.setColorAt(0.25, Qt::white);
lgV.setColorAt(1, alphaZero);
pen.setBrush(lgV);
painter->setPen(pen);
painter->drawLine(QPointF(pf.x(), rf.top()), QPointF(pf.x(), rf.bottom()));
QLinearGradient lgH(rf.left(), 0, rf.right(), 0);
lgH.setColorAt(0, alphaZero);
lgH.setColorAt(0.5, Qt::white);
lgH.setColorAt(1, alphaZero);
pen.setBrush(lgH);
painter->setPen(pen);
painter->drawLine(QPointF(rf.left(), pf.y()), QPointF(rf.right(), pf.y()));
painter->restore();
*/
painter->restore();
}
