plasma-framework/widgets/layoutitem.cpp
Alex Merry d29805caef Make drag-n-drop applets work again.
svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=716003
2007-09-23 18:03:37 +00:00

133 lines
2.6 KiB
C++

/*
* Copyright 2007 by Matias Valdenegro T. <mvaldenegro@informatica.utem.cl>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "layoutitem.h"
#include <KDebug>
#include "layout.h"
namespace Plasma
{
class LayoutItem::Private
{
public:
Private()
: layout(0),
managingLayout(0)
{
}
~Private() {}
Layout* layout;
Layout* managingLayout;
};
LayoutItem::LayoutItem()
: d(new Private())
{
}
LayoutItem::~LayoutItem()
{
if (d->managingLayout) {
d->managingLayout->removeItem(this);
}
delete d->layout;
delete d;
}
QGraphicsItem* LayoutItem::graphicsItem()
{
return 0;
}
bool LayoutItem::hasHeightForWidth() const
{
return false;
}
qreal LayoutItem::heightForWidth(qreal w) const
{
return 0.0;
}
bool LayoutItem::hasWidthForHeight() const
{
return false;
}
qreal LayoutItem::widthForHeight(qreal h) const
{
return 0.0;
}
void LayoutItem::setLayout(Layout* layout)
{
if (d->layout && layout) {
kDebug() << "already have a layout.";
return;
}
if (layout) {
layout->setParent(this);
} else if (d->layout) {
// FIXME: we had a layout, but now it has been removed
// and we are without layout; we should tell our
// children about this, but LayoutItem doesn't know
// about children =/
kDebug() << "layout removed from under us. expect crashes";
}
d->layout = layout;
}
Layout* LayoutItem::layout() const
{
return d->layout;
}
void LayoutItem::setManagingLayout(Layout* layout)
{
if (d->managingLayout) {
d->managingLayout->removeItem(this);
}
d->managingLayout = layout;
}
void LayoutItem::unsetManagingLayout(Layout* layout)
{
if (d->managingLayout == layout) {
d->managingLayout = 0;
}
}
Layout* LayoutItem::managingLayout() const
{
return d->managingLayout;
}
}