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diff --git a/src/statgraph.cpp b/src/statgraph.cpp
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+/***************************************************************************
+ * $Id: statgraph.cpp,v 1.7 2008/07/31 19:56:26 hoganrobert Exp $
+ * Copyright (C) 2006 - 2008 Robert Hogan *
+ * [email protected] *
+ * *
+ * 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 St, Fifth Floor, Boston, MA 02110-1301, USA. *
+ ***************************************************************************/
+/***************************************************************************
+ * *
+ * KCPULoad and KNetLoad are copyright (c) 1999-2000, Markus Gustavsson *
+ * (c) 2002, Ben Burton *
+ * (c) 2004-2005, Diego Pettenò *
+ * *
+ * 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. *
+ * *
+ ***************************************************************************/
+
+#include "statgraph.h"
+
+#include <qpainter.h>
+#include <qlabel.h>
+#include <kdebug.h>
+
+#define SOFT_STEP 3
+
+const QColor StatGraph::defaultBgColor = Qt::black;
+const QColor StatGraph::defaultReadingColor = Qt::yellow;
+const QColor StatGraph::defaultLabelColor = Qt::white;
+const QColor StatGraph::defaultGridColor = Qt::lightGray;
+
+/// Color used to pass transparent colors
+//const QColor StatGraph::invalidColor = QColor(-1, -1, -1);
+
+StatGraph::StatGraph(QWidget *parent, ushort pace, ushort gridPace, const QString &label, const QColor &bgColor, const char *name)
+ : QLabel(parent, name), m_style(Shades), m_gridPace(gridPace), m_pace(pace)
+{
+ setLabel(label);
+ setBgColor(bgColor);
+
+ m_numReadings = width() / pace;
+ m_currReading = 0;
+ m_readings = new uint[m_numReadings]; memset(m_readings, 0, m_numReadings*sizeof(uint));
+
+}
+
+StatGraph::~StatGraph()
+{
+ delete[] m_readings;
+}
+
+void StatGraph::setBgColor(const QColor &color)
+{
+ m_bgColor = color;
+
+ if ( m_bgColor.isValid() )
+ setBackgroundColor(m_bgColor);
+}
+
+inline void StatGraph::paintGrid(QPainter &p)
+{
+ p.setPen(m_gridColor);
+
+ const uint gridLines = height() / m_gridPace;
+ static uint graphWidth = width();
+ for(uint i = 0; i < gridLines; i++)
+ {
+ const int lineHeight = i*m_gridPace;
+ p.drawLine(0, lineHeight, graphWidth-1, lineHeight);
+ }
+}
+
+inline void StatGraph::paintShades(QPainter &p)
+{
+ //kdDebug() << "StatGraph::paintShades()" << endl;
+ const uint graphHeight = height();
+ for(uint i = 0; i < m_numReadings; i++)
+ {
+ ushort tmpPos = (m_currReading + i + 1) % m_numReadings;
+ if ( m_readings[tmpPos] > graphHeight )
+ m_readings[tmpPos] = graphHeight;
+
+ for(uint j = 0; j < m_readings[tmpPos]; j++)
+ {
+ if (m_readings[tmpPos] == 0 || j == 0)
+ p.setPen(m_bgColor);
+ else
+ p.setPen(m_readingColor.dark((100 * m_readings[tmpPos]) / j));
+
+ p.drawPoint(i, graphHeight - 1 - j);
+ }
+ }
+}
+
+inline void StatGraph::paintBars(QPainter &p)
+{
+ //kdDebug() << "StatGraph::paintBars()" << endl;
+ const uint graphHeight = height();
+ // Draw the readings bars, then the lower to save on pen adjustments.
+ p.setPen(m_readingColor);
+ for(uint i = 0; i < m_numReadings; i++)
+ {
+ ushort tmpPos = (m_currReading + i + 1) % m_numReadings;
+ p.drawLine(i, graphHeight - 1 - m_readings[tmpPos], i, graphHeight - 1);
+ }
+}
+
+inline void StatGraph::paintLines(QPainter &p)
+{
+ //kdDebug() << "StatGraph::paintLines()" << endl;
+ const uint graphHeight = height();
+ // Draw the reading line, then the lower to save on pen adjustments.
+ p.setPen(m_readingColor);
+ for(uint i = 0; i < m_numReadings; i++)
+ {
+ ushort tmpPos = (m_currReading + i + 1) % m_numReadings;
+ p.drawPoint(i, graphHeight - 1 - m_readings[tmpPos]);
+ }
+}
+
+inline void StatGraph::paintLabel(QPainter &p)
+{
+ //kdDebug() << "StatGraph::paintLabel()" << endl;
+ p.setFont(QFont("Helvetica", 8));
+ p.setPen(m_labelColor);
+ p.drawText(rect(), AlignLeft | AlignTop, m_label);
+}
+
+void StatGraph::clear()
+{
+ memset(m_readings, 0, m_numReadings*sizeof(uchar));
+ update();
+}
+
+void StatGraph::addPercentReading(uchar reading, bool soft)
+{
+ //kdDebug() << "StatGraph::addPercentReading(" << (uint)reading << ", " << soft << ")" << endl;
+ // Rescale the readings to a measure in pixels.
+ uint pix = ( reading * height() )/100;
+
+ if ( soft )
+ softenReadings(pix);
+
+ m_currReading = (m_currReading+1) % m_numReadings;
+ m_readings[m_currReading] = pix;
+ update();
+ update();
+}
+
+void StatGraph::softenReadings(uint &reading)
+{
+ //kdDebug() << "StatGraph::softenReadings(" << reading << ")" << endl;
+ uint old = m_readings[m_currReading];
+
+ // Modify the reading.
+ if (reading > old + SOFT_STEP)
+ reading = old + SOFT_STEP;
+ else if (reading > SOFT_STEP && reading < old - SOFT_STEP)
+ reading = old - SOFT_STEP;
+}
+
+void StatGraph::resizeEvent(QResizeEvent *e)
+{
+ QLabel::resizeEvent(e);
+
+ uint oldNumReadings = m_numReadings;
+ m_numReadings = width() / m_pace;
+
+ if ( m_numReadings != oldNumReadings )
+ {
+ uint *oldReadings = m_readings;
+
+ m_readings = new uint[m_numReadings];
+ memset(m_readings, 0, m_numReadings*sizeof(uint));
+
+ if ( m_numReadings < oldNumReadings )
+ memcpy(m_readings, oldReadings, m_numReadings*sizeof(uint));
+ else
+ memcpy(m_readings, oldReadings, oldNumReadings*sizeof(uint));
+ delete oldReadings;
+ m_currReading %= m_numReadings;
+ }
+}
+
+void StatGraph::paintEvent(QPaintEvent *e)
+{
+ QLabel::paintEvent(e);
+ if ( ! m_readingColor.isValid() ) m_readingColor = defaultReadingColor;
+ if ( ! m_labelColor.isValid() ) m_labelColor = defaultLabelColor;
+ if ( ! m_gridColor.isValid() ) m_gridColor = defaultGridColor;
+
+ QPainter p(this);
+ if ( m_gridPace )
+ paintGrid(p);
+
+ switch(m_style)
+ {
+ case Shades:
+ paintShades(p); break;
+ case Bars:
+ paintBars(p); break;
+ case Lines:
+ paintLines(p); break;
+ default:
+ kdDebug() << "Unknown style " << m_style << endl;
+ }
+
+ if ( ! m_label.isNull() )
+ paintLabel(p);
+}
+
+void StatGraph::mousePressEvent(QMouseEvent *e)
+{
+ QLabel::mousePressEvent(e);
+ m_button = e->button();
+}
+
+void StatGraph::mouseReleaseEvent(QMouseEvent *e)
+{
+ QLabel::mouseReleaseEvent(e);
+ if ( m_button == e->button() )
+ {
+ switch(m_button)
+ {
+ case LeftButton:
+ emit clickedLeft();
+ break;
+ case RightButton:
+ emit clickedRight();
+ break;
+ default:
+ kdDebug() << "Unknown button combination" << endl;
+ }
+ }
+ m_button = Qt::NoButton;
+}
+
+#include "statgraph.moc"
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