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/*
* Copyright (C) 2000 Rik Hemsley (rikkus) <rik@kde.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include <noatun/scrollinglabel.h>
#include <tqpainter.h>
#include <tqpixmap.h>
#include <tqtimer.h>
#include <tqtooltip.h>
class ScrollingLabel::Private
{
public:
Private()
: scrollSize (0),
pos (0),
add (false),
scroll (true)
{
}
// Order dependency.
TQString text;
TQString originalText;
TQPixmap buf;
TQTimer scrollTimer;
TQTimer resetTimer;
int scrollSize;
int pos;
bool add;
bool scroll;
// End order dependency.
};
ScrollingLabel::ScrollingLabel
(
const TQString & initialText,
TQWidget * parent,
const char * name
)
: TQWidget(parent, name)
{
d = new Private;
connect(&d->scrollTimer, TQT_SIGNAL(timeout()), this, TQT_SLOT(scroll()));
connect(&d->resetTimer, TQT_SIGNAL(timeout()), this, TQT_SLOT(restoreText()));
setText(initialText);
}
ScrollingLabel::~ScrollingLabel()
{
delete d;
}
void
ScrollingLabel::setText(const TQString & t, int time)
{
d->resetTimer.stop();
if (-1 != time)
{
restoreText();
d->originalText = d->text;
d->text = t;
d->resetTimer.start(time, true);
_update();
}
else
{
d->text = d->originalText = t;
_update();
}
TQToolTip::remove(this);
TQToolTip::add(this, d->text);
}
void
ScrollingLabel::restoreText()
{
d->text = d->originalText;
_update();
}
void
ScrollingLabel::_update()
{
d->scrollTimer.stop();
d->pos = 0;
d->add = false;
int w = fontMetrics().width(d->text);
int h = fontMetrics().height();
setFixedHeight(h);
d->scrollSize = TQMAX(0, w - width());
d->buf.resize(w, h);
d->buf.fill(colorGroup().background());
TQPainter p(&d->buf);
p.setFont(font());
p.drawText(0, fontMetrics().ascent(), d->text);
if (d->scroll && (d->scrollSize > 0))
d->scrollTimer.start(100, true);
tqrepaint(false);
}
void
ScrollingLabel::paintEvent(TQPaintEvent *)
{
bitBlt
(this, 0, 0, &d->buf, d->pos, 0, d->pos + width(), height(), TQt::CopyROP);
}
void
ScrollingLabel::resizeEvent(TQResizeEvent *)
{
_update();
}
void
ScrollingLabel::scroll()
{
d->scrollTimer.stop();
tqrepaint(false);
int scrollTime = 100;
if (d->pos == d->scrollSize || d->pos == 0)
{
d->add = !d->add;
scrollTime = 800;
}
d->pos += (d->add ? 1 : -1);
if (d->scroll)
d->scrollTimer.start(scrollTime, true);
}
TQSize
ScrollingLabel::sizeHint() const
{
return fontMetrics().boundingRect(d->text).size();
}
TQSize
ScrollingLabel::minimumSizeHint() const
{
return TQSize(0, fontMetrics().height());
}
TQString
ScrollingLabel::text() const
{
return d->text;
}
void
ScrollingLabel::setScroll(bool b)
{
d->scroll = b;
_update();
}
#include "scrollinglabel.moc"
// vim:ts=2:sw=2:tw=78:noet
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