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/*
Copyright (c) 2006 Gábor Lehel <illissius@gmail.com>
This library 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 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "KoItemToolTip.h"
#include <QApplication>
#include <QBasicTimer>
#include <QDesktopWidget>
#include <QModelIndex>
#include <QPainter>
#include <QPaintEvent>
#include <QPersistentModelIndex>
#include <QStyleOptionViewItem>
#include <QTextDocument>
#include <QTimerEvent>
#include <QToolTip>
class Q_DECL_HIDDEN KoItemToolTip::Private
{
public:
QTextDocument *document;
QPersistentModelIndex index;
QPoint pos;
QBasicTimer timer;
Private(): document(0) { }
};
KoItemToolTip::KoItemToolTip()
: d(new Private)
{
d->document = new QTextDocument(this);
setWindowFlags(Qt::FramelessWindowHint | Qt::ToolTip
| Qt::WindowStaysOnTopHint | Qt::X11BypassWindowManagerHint);
QApplication::instance()->installEventFilter(this);
}
KoItemToolTip::~KoItemToolTip()
{
delete d;
}
void KoItemToolTip::showTip(QWidget *widget, const QPoint &pos, const QStyleOptionViewItem &option, const QModelIndex &index)
{
QTextDocument *doc = createDocument(index);
QPoint p = (isVisible() && index == d->index) ? d->pos : pos;
if (!isVisible() || index != d->index || doc->toHtml() != d->document->toHtml())
{
d->pos = p;
d->index = index;
delete d->document;
d->document = doc;
updatePosition(widget, p, option);
if (!isVisible())
show();
else
update();
d->timer.start(10000, this);
}
else
delete doc;
}
void KoItemToolTip::updatePosition(QWidget *widget, const QPoint &pos, const QStyleOptionViewItem &option)
{
const QRect drect = QApplication::desktop()->availableGeometry(widget);
const QSize size = sizeHint();
const int width = size.width(), height = size.height();
const QPoint gpos = widget->mapToGlobal(pos);
const QRect irect(widget->mapToGlobal(option.rect.topLeft()), option.rect.size());
int y = gpos.y() + 20;
if (y + height > drect.bottom())
y = qMax(drect.top(), irect.top() - height);
int x;
if (gpos.x() + width < drect.right())
x = gpos.x();
else
x = qMax(drect.left(), gpos.x() - width);
move(x, y);
resize(sizeHint());
}
QSize KoItemToolTip::sizeHint() const
{
return d->document->size().toSize();
}
void KoItemToolTip::paintEvent(QPaintEvent*)
{
QPainter p(this);
p.initFrom(this);
d->document->drawContents(&p, rect());
p.drawRect(0, 0, width() - 1, height() - 1);
}
void KoItemToolTip::timerEvent(QTimerEvent *e)
{
if (e->timerId() == d->timer.timerId()) {
hide();
}
}
bool KoItemToolTip::eventFilter(QObject *object, QEvent *event)
{
switch(event->type())
{
case QEvent::KeyPress:
case QEvent::KeyRelease:
case QEvent::MouseButtonPress:
case QEvent::MouseButtonRelease:
case QEvent::FocusIn:
case QEvent::FocusOut:
case QEvent::Enter:
case QEvent::Leave:
hide();
default: break;
}
return QFrame::eventFilter(object, event);
}
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