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TechDraw: Dimension: Allow snapping label to its center position.

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This commit is contained in:
PaddleStroke
2024-04-26 14:51:46 +02:00
committed by WandererFan
parent 45332a275c
commit d201fb25db
2 changed files with 45 additions and 3 deletions
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46
src/Mod/TechDraw/Gui/QGIViewDimension.cpp
View File

@@ -131,6 +131,9 @@ QVariant QGIDatumLabel::itemChange(GraphicsItemChange change, const QVariant& va
}
}
else if (change == ItemPositionHasChanged && scene()) {
QPointF newPos = value.toPointF(); //position within parent!
snapPosition(newPos);
setLabelCenter();
m_dragState = Dragging;
Q_EMIT dragging(m_ctrl);
@@ -139,6 +142,43 @@ QVariant QGIDatumLabel::itemChange(GraphicsItemChange change, const QVariant& va
return QGraphicsItem::itemChange(change, value);
}
void QGIDatumLabel::snapPosition(QPointF& pos)
{
qreal snapPercent = 0.05;
auto* qgivd = dynamic_cast<QGIViewDimension*>(parentItem());
if (!qgivd) {
return;
}
auto* dim(dynamic_cast<TechDraw::DrawViewDimension*>(qgivd->getViewObject()));
if (!dim) {
return;
}
// First we try to snap the label to its center position.
pointPair pp = dim->getLinearPoints();
Base::Vector3d p1_3d = Rez::guiX(pp.first());
Base::Vector3d p2_3d = Rez::guiX(pp.second());
Base::Vector2d p1 = Base::Vector2d(p1_3d.x, p1_3d.y);
Base::Vector2d p2 = Base::Vector2d(p2_3d.x, p2_3d.y);
Base::Vector2d mid = (p1 + p2) * 0.5;
Base::Vector2d dir = p2 - p1;
Base::Vector2d normal = Base::Vector2d(-dir.y, dir.x);
Base::Vector2d posV = Base::Vector2d(pos.x() + m_dimText->boundingRect().width() * 0.5,
pos.y() + m_dimText->boundingRect().height() * 0.5);
Base::Vector2d projPnt;
projPnt.ProjectToLine(posV - mid, normal);
projPnt = projPnt + mid;
if ((projPnt - posV).Length() < dir.Length() * snapPercent) {
pos.setX(projPnt.x - m_dimText->boundingRect().width() * 0.5);
pos.setY(projPnt.y - m_dimText->boundingRect().height() * 0.5);
}
setPos(pos); // no infinite loop because if pos doesn't change then itemChanged is not triggered.
}
void QGIDatumLabel::mousePressEvent(QGraphicsSceneMouseEvent* event)
{
if (event->modifiers() & Qt::ControlModifier) {
@@ -238,7 +278,7 @@ void QGIDatumLabel::paint(QPainter* painter, const QStyleOptionGraphicsItem* opt
void QGIDatumLabel::setPosFromCenter(const double& xCenter, const double& yCenter)
{
prepareGeometryChange();
QGIViewDimension* qgivd = dynamic_cast<QGIViewDimension*>(parentItem());
auto* qgivd = dynamic_cast<QGIViewDimension*>(parentItem());
if (!qgivd) {
return;
}
@@ -248,8 +288,8 @@ void QGIDatumLabel::setPosFromCenter(const double& xCenter, const double& yCente
}
//set label's Qt position(top, left) given boundingRect center point
setPos(xCenter - m_dimText->boundingRect().width() / 2.,
yCenter - m_dimText->boundingRect().height() / 2.);
setPos(xCenter - m_dimText->boundingRect().width() * 0.5,
yCenter - m_dimText->boundingRect().height() * 0.5);
QString uText = m_unitText->toPlainText();
if ((uText.size() > 0) && (uText.at(0) != QChar::fromLatin1(' '))) {

2
src/Mod/TechDraw/Gui/QGIViewDimension.h
View File

@@ -121,6 +121,8 @@ protected:
int getPrecision();
void snapPosition(QPointF& position);
bool getVerticalSep() const { return verticalSep; }
void setVerticalSep(bool sep) { verticalSep = sep; }
std::vector<int> getSeps() const { return seps; }