int ConnectionTool::handleAtPoint(KoShape *shape, const QPointF &mousePoint) const
{
if (!shape)
return -1;
const QPointF shapePoint = shape->documentToShape(mousePoint);
KoConnectionShape * connectionShape = dynamic_cast<KoConnectionShape*>(shape);
if (connectionShape) {
// check connection shape handles
return connectionShape->handleIdAt(handleGrabRect(shapePoint));
} else {
// check connection points
int grabDistance = grabSensitivity();
qreal minDistance = HUGE_VAL;
int handleId = -1;
KoConnectionPoints connectionPoints = shape->connectionPoints();
KoConnectionPoints::const_iterator cp = connectionPoints.constBegin();
KoConnectionPoints::const_iterator lastCp = connectionPoints.constEnd();
for(; cp != lastCp; ++cp) {
qreal d = squareDistance(shapePoint, cp.value().position);
if (d <= grabDistance && d < minDistance) {
handleId = cp.key();
minDistance = d;
}
}
return handleId;
}
}
void ConnectionTool::paint(QPainter &painter, const KoViewConverter &converter)
{
// get the correctly sized rect for painting handles
QRectF handleRect = handlePaintRect(QPointF());
painter.setRenderHint(QPainter::Antialiasing, true);
if (m_currentStrategy) {
painter.save();
m_currentStrategy->paint(painter, converter);
painter.restore();
}
QList<KoShape*> shapes = canvas()->shapeManager()->shapes();
for (QList<KoShape*>::const_iterator end = shapes.constBegin(); end != shapes.constEnd(); ++end) {
KoShape* shape = *end;
if (!dynamic_cast<KoConnectionShape*>(shape)) {
// only paint connection points of textShapes not inside a tos container and other shapes
if (shape->shapeId() == TextShape_SHAPEID && dynamic_cast<KoTosContainer*>(shape->parent())) continue;
painter.save();
painter.setPen(Qt::black);
QTransform transform = shape->absoluteTransformation(0);
KoShape::applyConversion(painter, converter);
// Draw all the connection points of the shape
KoConnectionPoints connectionPoints = shape->connectionPoints();
KoConnectionPoints::const_iterator cp = connectionPoints.constBegin();
KoConnectionPoints::const_iterator lastCp = connectionPoints.constEnd();
for(; cp != lastCp; ++cp) {
if (shape == findNonConnectionShapeAtPosition(transform.map(cp.value().position)) ) {
handleRect.moveCenter(transform.map(cp.value().position));
painter.setBrush(cp.key() == m_activeHandle && shape == m_currentShape ?
Qt::red : Qt::white);
painter.drawRect(handleRect);
}
}
painter.restore();
}
}
// paint connection points or connection handles depending
// on the shape the mouse is currently
if (m_currentShape && m_editMode == EditConnection) {
KoConnectionShape *connectionShape = dynamic_cast<KoConnectionShape*>(m_currentShape);
if (connectionShape) {
int radius = handleRadius()+1;
int handleCount = connectionShape->handleCount();
for(int i = 0; i < handleCount; ++i) {
painter.save();
painter.setPen(Qt::blue);
painter.setBrush(i == m_activeHandle ? Qt::red : Qt::white);
painter.setTransform(connectionShape->absoluteTransformation(&converter) * painter.transform());
connectionShape->paintHandle(painter, converter, i, radius);
painter.restore();
}
}
}
}
void KoPathConnectionPointStrategy::handleMouseMove(const QPointF &mouseLocation, Qt::KeyboardModifiers modifiers)
{
Q_D(KoPathConnectionPointStrategy);
const qreal MAX_DISTANCE = 20.0; // TODO make user definable
const qreal MAX_DISTANCE_SQR = MAX_DISTANCE * MAX_DISTANCE;
d->newConnectionShape = 0;
d->newConnectionId = InvalidConnectionPointId;
QRectF roi(mouseLocation - QPointF(MAX_DISTANCE, MAX_DISTANCE), QSizeF(2*MAX_DISTANCE, 2*MAX_DISTANCE));
QList<KoShape*> shapes = d->tool->canvas()->shapeManager()->shapesAt(roi, true);
if (shapes.count() < 2) {
// we are not near any other shape, so remove the corresponding connection
if (d->handleId == 0)
d->connectionShape->connectFirst(0, InvalidConnectionPointId);
else
d->connectionShape->connectSecond(0, InvalidConnectionPointId);
KoParameterChangeStrategy::handleMouseMove(mouseLocation, modifiers);
} else {
qreal minimalDistance = DBL_MAX;
QPointF nearestPoint;
KoShape *nearestShape = 0;
int nearestPointId = InvalidConnectionPointId;
Q_FOREACH (KoShape* shape, shapes) {
// we do not want to connect to ourself
if (shape == d->connectionShape)
continue;
KoConnectionPoints connectionPoints = shape->connectionPoints();
if (! connectionPoints.count()) {
QSizeF size = shape->size();
connectionPoints[-1] = QPointF(0.0, 0.0);
connectionPoints[-2] = QPointF(size.width(), 0.0);
connectionPoints[-3] = QPointF(size.width(), size.height());
connectionPoints[-4] = QPointF(0.0, size.height());
connectionPoints[-5] = 0.5 * (connectionPoints[-1].position + connectionPoints[-2].position);
connectionPoints[-6] = 0.5 * (connectionPoints[-2].position + connectionPoints[-3].position);
connectionPoints[-7] = 0.5 * (connectionPoints[-3].position + connectionPoints[-4].position);
connectionPoints[-8] = 0.5 * (connectionPoints[-4].position + connectionPoints[-1].position);
}
QPointF localMousePosition = shape->absoluteTransformation(0).inverted().map(mouseLocation);
KoConnectionPoints::const_iterator cp = connectionPoints.constBegin();
KoConnectionPoints::const_iterator lastCp = connectionPoints.constEnd();
for(; cp != lastCp; ++cp) {
QPointF difference = localMousePosition - cp.value().position;
qreal distance = difference.x() * difference.x() + difference.y() * difference.y();
if (distance > MAX_DISTANCE_SQR)
continue;
if (distance < minimalDistance) {
nearestShape = shape;
nearestPoint = cp.value().position;
nearestPointId = cp.key();
minimalDistance = distance;
}
}
}
if (nearestShape) {
nearestPoint = nearestShape->absoluteTransformation(0).map(nearestPoint);
} else {
nearestPoint = mouseLocation;
}
d->newConnectionShape = nearestShape;
d->newConnectionId = nearestPointId;
if (d->handleId == 0)
d->connectionShape->connectFirst(nearestShape, nearestPointId);
else
d->connectionShape->connectSecond(nearestShape, nearestPointId);
KoParameterChangeStrategy::handleMouseMove(nearestPoint, modifiers);
}
}