#include "linearlayout.h"
#include <QGraphicsWidget>
#include <QGraphicsLayoutItem>
LinearLayoutAttached::LinearLayoutAttached(QObject *parent)
: QObject(parent), m_stretch(1), m_alignment(Qt::AlignTop), m_spacing(0)
{
}
void LinearLayoutAttached::setStretchFactor(int f)
{
if (m_stretch != f) {
m_stretch = f;
emit stretchChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), m_stretch);
}
}
void LinearLayoutAttached::setSpacing(int s)
{
if (m_spacing != s) {
m_spacing = s;
emit spacingChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), m_spacing);
}
}
void LinearLayoutAttached::setAlignment(Qt::Alignment a)
{
if (m_alignment != a) {
m_alignment = a;
emit alignmentChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), m_alignment);
}
}
GraphicsLinearLayoutStretchItemObject::GraphicsLinearLayoutStretchItemObject(QObject *parent)
: QObject(parent)
{
}
QSizeF GraphicsLinearLayoutStretchItemObject::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
{
Q_UNUSED(which);
Q_UNUSED(constraint);
return QSizeF();
}
GraphicsLinearLayoutObject::GraphicsLinearLayoutObject(QObject *parent)
: QObject(parent)
{
}
GraphicsLinearLayoutObject::~GraphicsLinearLayoutObject()
{
}
void GraphicsLinearLayoutObject::insertLayoutItem(int index, QGraphicsLayoutItem *item)
{
insertItem(index, item);
if (LinearLayoutAttached *obj = attachedProperties.value(item)) {
setStretchFactor(item, obj->stretchFactor());
setAlignment(item, obj->alignment());
updateSpacing(item, obj->spacing());
QObject::connect(obj, SIGNAL(stretchChanged(QGraphicsLayoutItem*,int)),
this, SLOT(updateStretch(QGraphicsLayoutItem*,int)));
QObject::connect(obj, SIGNAL(alignmentChanged(QGraphicsLayoutItem*,Qt::Alignment)),
this, SLOT(updateAlignment(QGraphicsLayoutItem*,Qt::Alignment)));
QObject::connect(obj, SIGNAL(spacingChanged(QGraphicsLayoutItem*,int)),
this, SLOT(updateSpacing(QGraphicsLayoutItem*,int)));
}
}
void GraphicsLinearLayoutObject::removeAt(int index)
{
QGraphicsLayoutItem *item = itemAt(index);
if (item) {
LinearLayoutAttached *obj = attachedProperties.value(item);
obj->disconnect(this);
attachedProperties.remove(item);
}
QGraphicsLinearLayout::removeAt(index);
}
void GraphicsLinearLayoutObject::clearChildren()
{
while (count() > 0)
removeAt(count()-1);
}
qreal GraphicsLinearLayoutObject::contentsMargin() const
{
qreal a, b, c, d;
getContentsMargins(&a, &b, &c, &d);
if (a == b && a == c && a == d)
return a;
return -1;
}
void GraphicsLinearLayoutObject::setContentsMargin(qreal m)
{
setContentsMargins(m, m, m, m);
}
void GraphicsLinearLayoutObject::updateStretch(QGraphicsLayoutItem *item, int stretch)
{
QGraphicsLinearLayout::setStretchFactor(item, stretch);
}
void GraphicsLinearLayoutObject::updateSpacing(QGraphicsLayoutItem* item, int spacing)
{
for (int i=0; i < count(); i++){
if (itemAt(i) == item) {
QGraphicsLinearLayout::setItemSpacing(i, spacing);
return;
}
}
}
void GraphicsLinearLayoutObject::updateAlignment(QGraphicsLayoutItem *item, Qt::Alignment alignment)
{
QGraphicsLinearLayout::setAlignment(item, alignment);
}
QHash<QGraphicsLayoutItem*, LinearLayoutAttached*> GraphicsLinearLayoutObject::attachedProperties;
LinearLayoutAttached *GraphicsLinearLayoutObject::qmlAttachedProperties(QObject *obj)
{
LinearLayoutAttached *rv = new LinearLayoutAttached(obj);
if (qobject_cast<QGraphicsLayoutItem*>(obj))
attachedProperties.insert(qobject_cast<QGraphicsLayoutItem*>(obj), rv);
return rv;
}