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dynamic constraints for QskStackBox added

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This commit is contained in:
Uwe Rathmann 2017-08-31 08:50:24 +02:00
parent ff9e9ab63c
commit cf58650c05
2 changed files with 38 additions and 3 deletions
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38
src/layouts/QskStackBox.cpp
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@ -7,6 +7,8 @@
#include "QskStackBoxAnimator.h"
#include "QskLayoutItem.h"
#include "QskLayoutEngine.h"
#include "QskLayoutConstraint.h"
#include <QPointer>
class QskStackBox::PrivateData
@ -163,7 +165,7 @@ QSizeF QskStackBox::contentsSizeHint() const
if ( !isActive() )
return QSizeF( -1, -1 );
if ( itemCount() == 0 )
if ( itemCount() == 0 )
return QSizeF( 0, 0 );
qreal width = -1;
@ -237,16 +239,46 @@ QSizeF QskStackBox::contentsSizeHint() const
return QSizeF( width, height );
}
qreal QskStackBox::heightForWidth( qreal width ) const
{
qreal height = -1;
const QskLayoutEngine& engine = this->engine();
for ( int i = 0; i < engine.itemCount(); i++ )
{
const QskLayoutItem* layoutItem = engine.layoutItemAt( i );
if ( const auto item = layoutItem->item() )
height = qMax( height, QskLayoutConstraint::heightForWidth( item, width ) );
}
return height;
}
qreal QskStackBox::widthForHeight( qreal height ) const
{
qreal width = -1;
const QskLayoutEngine& engine = this->engine();
for ( int i = 0; i < engine.itemCount(); i++ )
{
const QskLayoutItem* layoutItem = engine.layoutItemAt( i );
if ( const auto item = layoutItem->item() )
width = qMax( width, QskLayoutConstraint::widthForHeight( item, height ) );
}
return width;
}
void QskStackBox::layoutItemInserted( QskLayoutItem* layoutItem, int index )
{
Q_UNUSED( index )
QQuickItem *item = layoutItem->item();
QQuickItem* item = layoutItem->item();
if ( item == nullptr )
return;
#if 1
/*
/*
In general QGridLayoutEngine supports having multiple entries
in one cell, but well ...
So we have to go away from using it and doing the simple use case of

3
src/layouts/QskStackBox.h
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@ -34,6 +34,9 @@ public:
virtual QSizeF contentsSizeHint() const override;
virtual qreal heightForWidth( qreal width ) const override;
virtual qreal widthForHeight( qreal height ) const override;
void setAnimator( QskStackBoxAnimator* );
const QskStackBoxAnimator* animator() const;
QskStackBoxAnimator* animator();