You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
112 lines
3.4 KiB
112 lines
3.4 KiB
15 years ago
|
/*
|
||
|
|
* Copyright (c) 2004-2007 André Wöbbeking <Woebbeking@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 "tooltip.h"
|
||
|
|
|
||
|
|
#include <kglobal.h>
|
||
|
|
#include <kglobalsettings.h>
|
||
|
|
|
||
|
|
#include <qsimplerichtext.h>
|
||
|
|
|
||
|
|
|
||
|
|
namespace Cervisia
|
||
|
|
{
|
||
|
|
|
||
|
|
|
||
|
|
static QString truncateLines(const QString&, const QFontMetrics&, const QSize&);
|
||
|
|
static QString truncateLines(const QString&, const QFont&, const QPoint&, const QRect&);
|
||
|
|
|
||
|
|
|
||
|
|
ToolTip::ToolTip(QWidget* widget)
|
||
|
|
: QObject(widget), QToolTip(widget)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void ToolTip::maybeTip(const QPoint& pos)
|
||
|
|
{
|
||
|
|
QRect rect;
|
||
|
|
QString text;
|
||
|
|
emit queryToolTip(pos, rect, text);
|
||
|
|
|
||
|
|
if (rect.isValid() && !text.isEmpty())
|
||
|
|
{
|
||
|
|
text = truncateLines(text,
|
||
|
|
font(),
|
||
|
|
parentWidget()->mapToGlobal(pos),
|
||
|
|
KGlobalSettings::desktopGeometry(parentWidget()));
|
||
|
|
tip(rect, text);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// Primtive routine to truncate the text. size.width() is ignored, only
|
||
|
|
// size.height() is used at the moment to keep it fast. It doesn't work
|
||
|
|
// correct if text lines have different heights.
|
||
|
|
QString truncateLines(const QString& text,
|
||
|
|
const QFontMetrics& fm,
|
||
|
|
const QSize& size)
|
||
|
|
{
|
||
|
|
const QChar newLine('\n');
|
||
|
|
|
||
|
|
const int lineSpacing(fm.lineSpacing());
|
||
|
|
const int numberOfLines(text.contains(newLine) + 1);
|
||
|
|
const int maxNumberOfLines(size.height() / lineSpacing);
|
||
|
|
|
||
|
|
if (numberOfLines <= maxNumberOfLines)
|
||
|
|
return text;
|
||
|
|
|
||
|
|
const QChar* unicode(text.unicode());
|
||
|
|
for (int count(maxNumberOfLines); count; ++unicode)
|
||
|
|
if (*unicode == newLine)
|
||
|
|
--count;
|
||
|
|
|
||
|
|
return text.left(unicode - text.unicode() - 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// Truncate the tooltip's text if necessary
|
||
|
|
QString truncateLines(const QString& text,
|
||
|
|
const QFont& font,
|
||
|
|
const QPoint& globalPos,
|
||
|
|
const QRect& desktopGeometry)
|
||
|
|
{
|
||
|
|
// maximum size of the tooltip, - 10 just to be safe
|
||
|
|
const int maxWidth(kMax(desktopGeometry.width() - globalPos.x(), globalPos.x())
|
||
|
|
- desktopGeometry.left() - 10);
|
||
|
|
const int maxHeight(kMax(desktopGeometry.height() - globalPos.y(), globalPos.y())
|
||
|
|
- desktopGeometry.top() - 10);
|
||
|
|
|
||
|
|
// calculate the tooltip's size
|
||
|
|
const QSimpleRichText layoutedText(text, font);
|
||
|
|
|
||
|
|
// only if the tooltip's size is bigger in x- and y-direction the text must
|
||
|
|
// be truncated otherwise the tip is moved to a position where it fits
|
||
|
|
return ((layoutedText.widthUsed() > maxWidth)
|
||
|
|
&& (layoutedText.height() > maxHeight))
|
||
|
|
? truncateLines(text, QFontMetrics(font), QSize(maxWidth, maxHeight))
|
||
|
|
: text;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
} // namespace Cervisia
|
||
|
|
|
||
|
|
|
||
|
|
#include "tooltip.moc"
|