void SceneGridHandler::drawGuides()
{
const int drift = 5; // A dirft for scene not to resize from guide lines.
const QPointF nodeScenePos = mNode->scenePos();
const QRectF contentsRect = mNode->contentsRect();
const QRectF sceneRect = mNode->scene()->sceneRect().adjusted(drift, drift, -drift, -drift);
deleteGuides();
QList<QGraphicsItem *> list = getAdjancedNodes();
qreal myX1 = nodeScenePos.x() + contentsRect.x();
qreal myY1 = nodeScenePos.y() + contentsRect.y();
qreal myX2 = myX1 + contentsRect.width();
qreal myY2 = myY1 + contentsRect.height();
for (QGraphicsItem *graphicsItem : list) {
NodeElement *item = dynamic_cast<NodeElement *>(graphicsItem);
if (item == nullptr || item->parentItem() != nullptr || item == mNode) {
continue;
}
const QPointF point = item->scenePos();
const QRectF contents = item->contentsRect();
const qreal pointX1 = point.x() + contents.x() - spacing;
const qreal pointY1 = point.y() + contents.y() - spacing;
const qreal pointX2 = pointX1 + contents.width() + 2 * spacing;
const qreal pointY2 = pointY1 + contents.height() + 2 * spacing;
if (pointX1 != myX1 || pointY1 != myY1) {
const qreal deltaY1 = qAbs(pointY1 - myY1);
const qreal deltaY2 = qAbs(pointY2 - myY2);
const qreal deltaX1 = qAbs(pointX1 - myX1);
const qreal deltaX2 = qAbs(pointX2 - myX2);
buildLineY(deltaY1, pointY1, 0, myY1, myY2, sceneRect);
buildLineY(deltaY2, pointY2, contentsRect.height(), myY1, myY2, sceneRect);
buildLineX(deltaX1, pointX1, 0, myX1, myX2, sceneRect);
buildLineX(deltaX2, pointX2, contentsRect.width(), myX1, myX2, sceneRect);
buildLineY(qAbs(pointY1 - myY2), pointY1, contentsRect.height(), myY1, myY2, sceneRect);
buildLineX(qAbs(pointX1 - myX2), pointX1, contentsRect.width(), myX1, myX2, sceneRect);
buildLineY(qAbs(pointY2 - myY1), pointY2, 0, myY1, myY2, sceneRect);
buildLineX(qAbs(pointX2 - myX1), pointX2, 0, myX1, myX2, sceneRect);
}
}
}
void SceneGridHandler::drawGuides()
{
QPointF const nodeScenePos = mNode->scenePos();
QRectF const contentsRect = mNode->contentsRect();
QRectF const sceneRect = mNode->scene()->sceneRect();
delUnusedLines();
QList<QGraphicsItem *> list = getAdjancedNodes();
qreal myX1 = nodeScenePos.x() + contentsRect.x();
qreal myY1 = nodeScenePos.y() + contentsRect.y();
qreal myX2 = myX1 + contentsRect.width();
qreal myY2 = myY1 + contentsRect.height();
foreach (QGraphicsItem *graphicsItem, list) {
NodeElement *item = dynamic_cast<NodeElement *>(graphicsItem);
if (item == NULL || item->parentItem() != NULL || item == mNode) {
continue;
}
QPointF const point = item->scenePos();
QRectF const contents = item->contentsRect();
qreal const pointX1 = point.x() + contents.x() - spacing;
qreal const pointY1 = point.y() + contents.y() - spacing;
qreal const pointX2 = pointX1 + contents.width() + 2 * spacing;
qreal const pointY2 = pointY1 + contents.height() + 2 * spacing;
if (pointX1 != myX1 || pointY1 != myY1) {
qreal const deltaY1 = qAbs(pointY1 - myY1);
qreal const deltaY2 = qAbs(pointY2 - myY2);
qreal const deltaX1 = qAbs(pointX1 - myX1);
qreal const deltaX2 = qAbs(pointX2 - myX2);
buildLineY(deltaY1, pointY1, 0, myY1, myY2, sceneRect);
buildLineY(deltaY2, pointY2, contentsRect.height(), myY1, myY2, sceneRect);
buildLineX(deltaX1, pointX1, 0, myX1, myX2, sceneRect);
buildLineX(deltaX2, pointX2, contentsRect.width(), myX1, myX2, sceneRect);
buildLineY(qAbs(pointY1 - myY2), pointY1, contentsRect.height(), myY1, myY2, sceneRect);
buildLineX(qAbs(pointX1 - myX2), pointX1, contentsRect.width(), myX1, myX2, sceneRect);
buildLineY(qAbs(pointY2 - myY1), pointY2, 0, myY1, myY2, sceneRect);
buildLineX(qAbs(pointX2 - myX1), pointX2, 0, myX1, myX2, sceneRect);
}
}
