Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 196 insertions, 0 deletions

diff --git a/noatun/library/scrollinglabel.cpp b/noatun/library/scrollinglabel.cpp
new file mode 100644
index 00000000..d7bdd643
--- /dev/null
+++ b/noatun/library/scrollinglabel.cpp
@@ -0,0 +1,196 @@
+/*
+ * 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 <qpainter.h>
+#include <qpixmap.h>
+#include <qtimer.h>
+#include <qtooltip.h>
+
+class ScrollingLabel::Private
+{
+	public:
+
+		Private()
+			:	scrollSize	(0),
+				pos					(0),
+				add					(false),
+				scroll			(true)
+		{
+		}
+
+		// Order dependency.
+		QString		text;
+		QString		originalText;
+		QPixmap		buf;
+		QTimer		scrollTimer;
+		QTimer		resetTimer;
+		int				scrollSize;
+		int				pos;
+		bool			add;
+		bool			scroll;
+		// End order dependency.
+};
+
+ScrollingLabel::ScrollingLabel
+(
+ const QString	& initialText,
+ QWidget				* parent,
+ const char			* name
+)
+	: QWidget(parent, name)
+{
+	d = new Private;
+
+	connect(&d->scrollTimer,	SIGNAL(timeout()), this, SLOT(scroll()));
+	connect(&d->resetTimer,		SIGNAL(timeout()), this, SLOT(restoreText()));
+
+	setText(initialText);
+}
+
+ScrollingLabel::~ScrollingLabel()
+{
+	delete d;
+}
+
+	void
+ScrollingLabel::setText(const QString & 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();
+	}
+
+        QToolTip::remove(this);
+	QToolTip::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 = QMAX(0, w - width());
+
+	d->buf.resize(w, h);
+	d->buf.fill(colorGroup().background());
+
+	QPainter p(&d->buf);
+	p.setFont(font());
+	p.drawText(0, fontMetrics().ascent(), d->text);
+
+	if (d->scroll && (d->scrollSize > 0))
+		d->scrollTimer.start(100, true);
+
+	repaint(false);
+}
+
+	void
+ScrollingLabel::paintEvent(QPaintEvent *)
+{
+	bitBlt
+		(this, 0, 0, &d->buf, d->pos, 0, d->pos + width(), height(), Qt::CopyROP);
+}
+
+	void
+ScrollingLabel::resizeEvent(QResizeEvent *)
+{
+	_update();
+}
+
+	void
+ScrollingLabel::scroll()
+{
+	d->scrollTimer.stop();
+
+	repaint(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);
+}
+
+	QSize
+ScrollingLabel::sizeHint() const
+{
+	return fontMetrics().boundingRect(d->text).size();
+}
+
+	QSize
+ScrollingLabel::minimumSizeHint() const
+{
+	return QSize(0, fontMetrics().height());
+}
+
+	QString
+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
+