Initial import of tork 0.33

1 files changed, 253 insertions, 0 deletions

diff --git a/src/statgraph.cpp b/src/statgraph.cpp
new file mode 100644
index 0000000..4313e5f
--- /dev/null
+++ b/src/statgraph.cpp
@@ -0,0 +1,253 @@
+/***************************************************************************
+ * $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"