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/***************************************************************************
* Copyright (C) 2011 by Dario Freddi <drf@kde.org> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, 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 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 "ErrorOverlay.h"
#include <QEvent>
#include <QLabel>
#include <QVBoxLayout>
#include <QIcon>
#include <KLocalizedString>
ErrorOverlay::ErrorOverlay(QWidget *baseWidget, const QString &details, QWidget *parent) :
QWidget(parent ? parent : baseWidget->window()),
m_BaseWidget(baseWidget)
{
// Build the UI
QVBoxLayout *layout = new QVBoxLayout;
layout->setSpacing(10);
QLabel *pixmap = new QLabel();
pixmap->setPixmap(QIcon::fromTheme("dialog-error").pixmap(64));
QLabel *message = new QLabel(i18n("Power Management configuration module could not be loaded.\n%1", details));
pixmap->setAlignment(Qt::AlignHCenter);
message->setAlignment(Qt::AlignHCenter);
layout->addStretch();
layout->addWidget(pixmap);
layout->addWidget(message);
layout->addStretch();
setLayout(layout);
// Draw the transparent overlay background
QPalette p = palette();
p.setColor(backgroundRole(), QColor(0, 0, 0, 128));
p.setColor(foregroundRole(), Qt::white);
setPalette(p);
setAutoFillBackground(true);
m_BaseWidget->installEventFilter(this);
reposition();
}
ErrorOverlay::~ErrorOverlay()
{
}
void ErrorOverlay::reposition()
{
if (!m_BaseWidget) {
return;
}
// reparent to the current top level widget of the base widget if needed
// needed eg. in dock widgets
if (parentWidget() != m_BaseWidget->window()) {
setParent(m_BaseWidget->window());
}
// follow base widget visibility
// needed eg. in tab widgets
if (!m_BaseWidget->isVisible()) {
hide();
return;
}
show();
// follow position changes
const QPoint topLevelPos = m_BaseWidget->mapTo(window(), QPoint(0, 0));
const QPoint parentPos = parentWidget()->mapFrom(window(), topLevelPos);
move(parentPos);
// follow size changes
// TODO: hide/scale icon if we don't have enough space
resize(m_BaseWidget->size());
}
bool ErrorOverlay::eventFilter(QObject * object, QEvent * event)
{
if (object == m_BaseWidget &&
(event->type() == QEvent::Move || event->type() == QEvent::Resize ||
event->type() == QEvent::Show || event->type() == QEvent::Hide ||
event->type() == QEvent::ParentChange)) {
reposition();
}
return QWidget::eventFilter(object, event);
}
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