static void _q_boundGeometryToSizeConstraints(const QRectF &startGeometry,
QRectF *rect, Qt::WindowFrameSection section,
const QSizeF &min, const QSizeF &max,
const QGraphicsWidget *widget)
{
const QRectF proposedRect = *rect;
qreal width = qBound(min.width(), proposedRect.width(), max.width());
qreal height = qBound(min.height(), proposedRect.height(), max.height());
const bool hasHFW = QGraphicsLayoutItemPrivate::get(widget)->hasHeightForWidth();
const bool hasWFH = QGraphicsLayoutItemPrivate::get(widget)->hasWidthForHeight();
const bool widthChanged = proposedRect.width() != widget->size().width();
const bool heightChanged = proposedRect.height() != widget->size().height();
if (hasHFW || hasWFH) {
if (widthChanged || heightChanged) {
qreal minExtent;
qreal maxExtent;
qreal constraint;
qreal proposed;
if (hasHFW) {
minExtent = min.height();
maxExtent = max.height();
constraint = width;
proposed = proposedRect.height();
} else {
// width for height
minExtent = min.width();
maxExtent = max.width();
constraint = height;
proposed = proposedRect.width();
}
if (minimumHeightForWidth(constraint, minExtent, maxExtent, widget, hasHFW) > proposed) {
QSizeF effectiveSize = closestAcceptableSize(QSizeF(width, height), widget);
width = effectiveSize.width();
height = effectiveSize.height();
}
}
}
switch (section) {
case Qt::LeftSection:
rect->setRect(startGeometry.right() - qRound(width), startGeometry.top(),
qRound(width), startGeometry.height());
break;
case Qt::TopLeftSection:
rect->setRect(startGeometry.right() - qRound(width), startGeometry.bottom() - qRound(height),
qRound(width), qRound(height));
break;
case Qt::TopSection:
rect->setRect(startGeometry.left(), startGeometry.bottom() - qRound(height),
startGeometry.width(), qRound(height));
break;
case Qt::TopRightSection:
rect->setTop(rect->bottom() - qRound(height));
rect->setWidth(qRound(width));
break;
case Qt::RightSection:
rect->setWidth(qRound(width));
break;
case Qt::BottomRightSection:
rect->setWidth(qRound(width));
rect->setHeight(qRound(height));
break;
case Qt::BottomSection:
rect->setHeight(qRound(height));
break;
case Qt::BottomLeftSection:
rect->setRect(startGeometry.right() - qRound(width), startGeometry.top(),
qRound(width), qRound(height));
break;
default:
break;
}
}
static void _q_boundGeometryToSizeConstraints(const QRectF &startGeometry,
QRectF *rect, Qt::WindowFrameSection section,
const QSizeF &min, const QSizeF &max,
const QGraphicsWidget *widget)
{
const QRectF proposedRect = *rect;
qreal width = qBound(min.width(), proposedRect.width(), max.width());
qreal height = qBound(min.height(), proposedRect.height(), max.height());
QSizePolicy sp = widget->sizePolicy();
if (const QGraphicsLayout *l = widget->layout()) {
sp = l->sizePolicy();
}
const bool hasHFW = sp.hasHeightForWidth(); // || sp.hasWidthForHeight();
const bool widthChanged = proposedRect.width() < widget->size().width();
const bool heightChanged = proposedRect.height() < widget->size().height();
if (hasHFW) {
if (widthChanged || heightChanged) {
const qreal minh = min.height();
const qreal maxh = max.height();
const qreal proposedHFW = minimumHeightForWidth(width, minh, maxh, widget);
if (proposedHFW > proposedRect.height()) {
QSizeF effectiveSize = closestAcceptableSize(QSizeF(width, height), widget);
width = effectiveSize.width();
height = effectiveSize.height();
}
}
}
switch (section) {
case Qt::LeftSection:
rect->setRect(startGeometry.right() - qRound(width), startGeometry.top(),
qRound(width), startGeometry.height());
break;
case Qt::TopLeftSection:
rect->setRect(startGeometry.right() - qRound(width), startGeometry.bottom() - qRound(height),
qRound(width), qRound(height));
break;
case Qt::TopSection:
rect->setRect(startGeometry.left(), startGeometry.bottom() - qRound(height),
startGeometry.width(), qRound(height));
break;
case Qt::TopRightSection:
rect->setTop(rect->bottom() - qRound(height));
rect->setWidth(qRound(width));
break;
case Qt::RightSection:
rect->setWidth(qRound(width));
break;
case Qt::BottomRightSection:
rect->setWidth(qRound(width));
rect->setHeight(qRound(height));
break;
case Qt::BottomSection:
rect->setHeight(qRound(height));
break;
case Qt::BottomLeftSection:
rect->setRect(startGeometry.right() - qRound(width), startGeometry.top(),
qRound(width), qRound(height));
break;
default:
break;
}
}
