plasma-framework/widgets/widget.cpp

208 lines
3.6 KiB
C++
Raw Normal View History

/*
* Copyright (C) 2007 by Alexander Wiedenbruch <mail@wiedenbruch.de>
* and Matias Valdenegro <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 version 2 as
* published by the Free Software Foundation
*
* 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 "widget.h"
#include <QtCore/QList>
#include "layout.h"
namespace Plasma
{
class Widget::Private
{
public:
Private()
: parent(0),
layout(0)
{ }
~Private() { }
QRectF geometry;
Widget *parent;
Layout *layout;
QList<Widget *> childList;
};
Widget::Widget(QGraphicsItem *parent)
: QGraphicsItem(parent),
d(new Private)
{
d->parent = dynamic_cast<Widget*>(parent);
if (d->parent) {
d->parent->addChild(this);
d->parent->setGeometry(QRectF(QPointF(0.0, 0.0), d->parent->size()));
}
}
Widget::~Widget()
{
delete d;
}
Qt::Orientations Widget::expandingDirections() const
{
return 0;
}
QSizeF Widget::maximumSize() const
{
return QSizeF();
}
QSizeF Widget::minimumSize() const
{
return QSizeF(0.0, 0.0);
}
bool Widget::hasHeightForWidth() const
{
return false;
}
qreal Widget::heightForWidth(qreal w) const
{
Q_UNUSED(w);
return -1.0;
}
bool Widget::hasWidthForHeight() const
{
return false;
}
qreal Widget::widthForHeight(qreal h) const
{
Q_UNUSED(h);
return -1.0;
}
QRectF Widget::geometry() const
{
return d->geometry;
}
void Widget::setGeometry(const QRectF& geometry)
{
prepareGeometryChange();
d->geometry = geometry;
updateGeometry();
update();
}
void Widget::updateGeometry()
{
if (layout()) {
layout()->setGeometry(QRectF(QPointF(0.0, 0.0), size()));
}
}
void Widget::invalidate()
{
updateGeometry();
if (parent()) {
parent()->updateGeometry();
}
}
QSizeF Widget::sizeHint() const
{
return size();
}
QSizeF Widget::size() const
{
return geometry().size();
}
QRectF Widget::boundingRect() const
{
return geometry();
}
void Widget::resize(const QSizeF& size)
{
setGeometry(QRectF(d->geometry.topLeft(), size));
}
void Widget::resize(qreal w, qreal h)
{
resize(QSizeF(w, h));
}
void Widget::setLayout(Layout *l)
{
d->layout = l;
}
Layout *Widget::layout() const
{
return d->layout;
}
Widget *Widget::parent() const
{
return d->parent;
}
void Widget::addChild(Widget *w)
{
if (!w) {
return;
}
w->reparent(this);
d->childList.append(w);
qDebug("Added Child Widget : %p", (void*)w);
if (layout()) {
layout()->addItem(w);
updateGeometry();
}
}
void Widget::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(painter)
Q_UNUSED(option)
Q_UNUSED(widget)
// do nothing, but we need to reimp so we can create Widget items as this method
// is pure virtual in QGraphicsItem
}
void Widget::reparent(Widget *w)
{
d->parent = w;
setParentItem(w);
update();
}
} // Plasma namespace