void HoverPoints::paintPoints()
{
QPainter p;
#ifdef QT_OPENGL_SUPPORT
ArthurFrame *af = qobject_cast<ArthurFrame *>(m_widget);
if (af && af->usesOpenGL())
p.begin(af->glWidget());
else
p.begin(m_widget);
#else
p.begin(m_widget);
#endif
p.setRenderHint(QPainter::Antialiasing);
if (m_connectionPen.style() != Qt::NoPen && m_connectionType != NoConnection) {
p.setPen(m_connectionPen);
if (m_connectionType == CurveConnection) {
QPainterPath path;
path.moveTo(m_points.at(0));
for (int i=1; i<m_points.size(); ++i) {
QPointF p1 = m_points.at(i-1);
QPointF p2 = m_points.at(i);
qreal distance = p2.x() - p1.x();
path.cubicTo(p1.x() + distance / 2, p1.y(),
p1.x() + distance / 2, p2.y(),
p2.x(), p2.y());
}
p.drawPath(path);
} else {
p.drawPolyline(m_points);
}
}
p.setPen(m_pointPen);
p.setBrush(m_pointBrush);
for (int i=0; i<m_points.size(); ++i) {
QRectF bounds = pointBoundingRect(i);
if (m_shape == CircleShape)
p.drawEllipse(bounds);
else
p.drawRect(bounds);
}
}
bool HoverPoints::eventFilter(QObject *object, QEvent *event)
{
if (object == m_widget && m_enabled) {
switch (event->type()) {
case QEvent::MouseButtonPress:
{
if (!m_fingerPointMapping.isEmpty())
return true;
QMouseEvent *me = (QMouseEvent *) event;
QPointF clickPos = me->pos();
int index = -1;
for (int i=0; i<m_points.size(); ++i) {
QPainterPath path;
if (m_shape == CircleShape)
path.addEllipse(pointBoundingRect(i));
else
path.addRect(pointBoundingRect(i));
if (path.contains(clickPos)) {
index = i;
break;
}
}
if (me->button() == Qt::LeftButton) {
if (index == -1) {
if (!m_editable)
return false;
int pos = 0;
// Insert sort for x or y
if (m_sortType == XSort) {
for (int i=0; i<m_points.size(); ++i)
if (m_points.at(i).x() > clickPos.x()) {
pos = i;
break;
}
} else if (m_sortType == YSort) {
for (int i=0; i<m_points.size(); ++i)
if (m_points.at(i).y() > clickPos.y()) {
pos = i;
break;
}
}
m_points.insert(pos, clickPos);
m_locks.insert(pos, 0);
m_currentIndex = pos;
firePointChange();
} else {
m_currentIndex = index;
}
return true;
} else if (me->button() == Qt::RightButton) {
if (index >= 0 && m_editable) {
if (m_locks[index] == 0) {
m_locks.remove(index);
m_points.remove(index);
}
firePointChange();
return true;
}
}
}
break;
case QEvent::MouseButtonRelease:
if (!m_fingerPointMapping.isEmpty())
return true;
m_currentIndex = -1;
break;
case QEvent::MouseMove:
if (!m_fingerPointMapping.isEmpty())
return true;
if (m_currentIndex >= 0)
movePoint(m_currentIndex, ((QMouseEvent *)event)->pos());
break;
case QEvent::TouchBegin:
case QEvent::TouchUpdate:
{
const QTouchEvent *const touchEvent = static_cast<const QTouchEvent*>(event);
const QList<QTouchEvent::TouchPoint> points = touchEvent->touchPoints();
const qreal pointSize = qMax(m_pointSize.width(), m_pointSize.height());
foreach (const QTouchEvent::TouchPoint &touchPoint, points) {
const int id = touchPoint.id();
switch (touchPoint.state()) {
case Qt::TouchPointPressed:
{
// find the point, move it
QSet<int> activePoints = QSet<int>::fromList(m_fingerPointMapping.values());
int activePoint = -1;
qreal distance = -1;
const int pointsCount = m_points.size();
const int activePointCount = activePoints.size();
if (pointsCount == 2 && activePointCount == 1) { // only two points
activePoint = activePoints.contains(0) ? 1 : 0;
} else {
for (int i=0; i<pointsCount; ++i) {
if (activePoints.contains(i))
continue;
qreal d = QLineF(touchPoint.pos(), m_points.at(i)).length();
if ((distance < 0 && d < 12 * pointSize) || d < distance) {
distance = d;
activePoint = i;
}
}
}
if (activePoint != -1) {
m_fingerPointMapping.insert(touchPoint.id(), activePoint);
movePoint(activePoint, touchPoint.pos());
}
}
break;
case Qt::TouchPointReleased:
{
// move the point and release
QHash<int,int>::iterator it = m_fingerPointMapping.find(id);
movePoint(it.value(), touchPoint.pos());
m_fingerPointMapping.erase(it);
}
break;
case Qt::TouchPointMoved:
{
// move the point
const int pointIdx = m_fingerPointMapping.value(id, -1);
if (pointIdx >= 0) // do we track this point?
movePoint(pointIdx, touchPoint.pos());
}
break;
default:
break;
}
}
if (m_fingerPointMapping.isEmpty()) {
event->ignore();
return false;
} else {
return true;
}
}
break;
case QEvent::TouchEnd:
if (m_fingerPointMapping.isEmpty()) {
event->ignore();
return false;
}
return true;
break;
case QEvent::Resize:
{
QResizeEvent *e = (QResizeEvent *) event;
if (e->oldSize().width() == 0 || e->oldSize().height() == 0)
break;
qreal stretch_x = e->size().width() / qreal(e->oldSize().width());
qreal stretch_y = e->size().height() / qreal(e->oldSize().height());
for (int i=0; i<m_points.size(); ++i) {
QPointF p = m_points[i];
movePoint(i, QPointF(p.x() * stretch_x, p.y() * stretch_y), false);
}
firePointChange();
break;
}
case QEvent::Paint:
{
QWidget *that_widget = m_widget;
m_widget = 0;
QApplication::sendEvent(object, event);
m_widget = that_widget;
paintPoints();
#ifdef QT_OPENGL_SUPPORT
ArthurFrame *af = qobject_cast<ArthurFrame *>(that_widget);
if (af && af->usesOpenGL())
af->glWidget()->swapBuffers();
#endif
return true;
}
default:
break;
}
}
return false;
}
bool HoverPoints::eventFilter(QObject *object, QEvent *event)
{
if (object == m_widget && m_enabled) {
switch (event->type()) {
case QEvent::MouseButtonPress:
{
QMouseEvent *me = (QMouseEvent *) event;
QPointF clickPos = me->pos();
int index = -1;
for (int i=0; i<m_points.size(); ++i) {
QPainterPath path;
if (m_shape == CircleShape)
path.addEllipse(pointBoundingRect(i));
else
path.addRect(pointBoundingRect(i));
if (path.contains(clickPos)) {
index = i;
break;
}
}
if (me->button() == Qt::LeftButton) {
if (index == -1) {
if (!m_editable)
return false;
int pos = 0;
// Insert sort for x or y
if (m_sortType == XSort) {
for (int i=0; i<m_points.size(); ++i)
if (m_points.at(i).x() > clickPos.x()) {
pos = i;
break;
}
} else if (m_sortType == YSort) {
for (int i=0; i<m_points.size(); ++i)
if (m_points.at(i).y() > clickPos.y()) {
pos = i;
break;
}
}
m_points.insert(pos, clickPos);
m_locks.insert(pos, 0);
m_currentIndex = pos;
firePointChange();
} else {
m_currentIndex = index;
}
return true;
} else if (me->button() == Qt::RightButton) {
if (index >= 0 && m_editable) {
if (m_locks[index] == 0) {
m_locks.remove(index);
m_points.remove(index);
}
firePointChange();
return true;
}
}
}
break;
case QEvent::MouseButtonRelease:
m_currentIndex = -1;
break;
case QEvent::MouseMove:
if (m_currentIndex >= 0)
movePoint(m_currentIndex, ((QMouseEvent *)event)->pos());
break;
case QEvent::Resize:
{
QResizeEvent *e = (QResizeEvent *) event;
if (e->oldSize().width() == 0 || e->oldSize().height() == 0)
break;
qreal stretch_x = e->size().width() / qreal(e->oldSize().width());
qreal stretch_y = e->size().height() / qreal(e->oldSize().height());
for (int i=0; i<m_points.size(); ++i) {
QPointF p = m_points[i];
movePoint(i, QPointF(p.x() * stretch_x, p.y() * stretch_y), false);
}
firePointChange();
break;
}
case QEvent::Paint:
{
QWidget *that_widget = m_widget;
m_widget = 0;
QApplication::sendEvent(object, event);
m_widget = that_widget;
paintPoints();
#ifdef QT_OPENGL_SUPPORT
ArthurFrame *af = qobject_cast<ArthurFrame *>(that_widget);
if (af && af->usesOpenGL())
af->glWidget()->swapBuffers();
#endif
return true;
}
default:
break;
}
}
return false;
}
