peranger/qskinny
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

layoutSizeHint reimplemented

Browse Source
This commit is contained in:
Uwe Rathmann 2019-09-20 07:44:03 +02:00
parent 81817d53da
commit ceaae8aa60
1 changed files with 21 additions and 69 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

90
src/layouts/QskStackBox.cpp
View File

@ -5,7 +5,6 @@
#include "QskStackBox.h"
#include "QskStackBoxAnimator.h"
#include "QskLayoutHint.h"
#include "QskEvent.h"
#include "QskQuick.h"
@ -347,88 +346,41 @@ void QskStackBox::updateLayout()
QSizeF QskStackBox::layoutSizeHint(
Qt::SizeHint which, const QSizeF& constraint ) const
{
// needs to reimplemented TODO ...
// minimum/preferred layout hint need to be cached
if ( which != Qt::PreferredSize )
if ( which == Qt::MaximumSize )
return QSizeF();
if ( itemCount() == 0 )
return QSizeF();
qreal w = -1.0;
qreal h = -1.0;
if ( constraint.width() >= 0 || constraint.height() >= 0 )
for ( const auto item : m_data->items )
{
qreal value = -1;
/*
We ignore the retainSizeWhenVisible flag and include all
invisible items. Maybe we should offer a flag to control this ?
*/
const auto policy = qskSizePolicy( item );
for ( const auto& item : qskAsConst( m_data->items ) )
if ( constraint.width() >= 0.0 && policy.isConstrained( Qt::Vertical ) )
{
const auto hint = qskSizeConstraint( item, which, constraint );
if ( constraint.width() >= 0 )
value = qMax( hint.height(), value );
else
value = qMax( hint.width(), value );
h = qMax( h, hint.height() );
}
else if ( constraint.height() >= 0.0 && policy.isConstrained( Qt::Horizontal ) )
{
const auto hint = qskSizeConstraint( item, which, constraint );
w = qMax( w, hint.width() );
}
if ( constraint.width() >= 0 )
return QSizeF( constraint.width(), value );
else
return QSizeF( value, constraint.height() );
}
qreal width = -1;
qreal height = -1;
int constraintTypes = QskSizePolicy::Unconstrained;
for ( const auto item : qskAsConst( m_data->items ) )
{
const auto type = qskSizePolicy( item ).constraintType();
if ( type != QskSizePolicy::Unconstrained )
{
constraintTypes |= type;
continue;
}
const auto hint = qskSizeConstraint( item, which, QSizeF() );
const auto hint = qskSizeConstraint( item, which, constraint );
width = QskLayoutHint::combined( which, width, hint.width() );
height = QskLayoutHint::combined( which, height, hint.height() );
}
if ( constraintTypes & QskSizePolicy::WidthForHeight )
{
const QSizeF constraint( -1, height );
for ( const auto& item : qskAsConst( m_data->items ) )
{
const auto sizePolicy = qskSizePolicy( item );
if ( sizePolicy.constraintType() == QskSizePolicy::WidthForHeight )
{
const auto hint = qskSizeConstraint( item, which, constraint );
width = QskLayoutHint::combined( which, width, hint.width() );
}
w = qMax( w, hint.width() );
h = qMax( h, hint.height() );
}
}
if ( constraintTypes & QskSizePolicy::HeightForWidth )
{
const QSizeF constraint( width, -1 );
for ( const auto& item : qskAsConst( m_data->items ) )
{
const auto sizePolicy = qskSizePolicy( item );
if ( sizePolicy.constraintType() == QskSizePolicy::HeightForWidth )
{
const auto hint = qskSizeConstraint( item, which, constraint );
height = QskLayoutHint::combined( which, height, hint.height() );
}
}
}
return QSizeF( width, height );
// minimum layout hint needs to be cached TODO ...
return QSizeF( w, h );
}
bool QskStackBox::event( QEvent* event )