GraphFrame Class Reference

#include <graphframe.h>

List of all members.

Public Types

 SolidLine = 0
 AreaGraph
enum  GraphStyle { SolidLine = 0, AreaGraph }

Public Member Functions

 GraphFrame (QWidget *parent=0)
 ~GraphFrame ()
void addPoints (qreal recv, qreal send)
void resetGraph ()
void setShowCounters (bool showRecv, bool showSend)
void setGraphStyle (GraphStyle style)

Protected Member Functions

void paintEvent (QPaintEvent *event)

Private Member Functions

int labelWidth (const QString &label)
int getNumPoints ()
void paintData ()
void paintTotals ()
void paintScale ()
QString totalToStr (qreal total)
QVector< QPointF > pointsFromData (QList< qreal > *list)
void paintLine (QVector< QPointF > points, QColor color, Qt::PenStyle lineStyle=Qt::SolidLine)
void paintIntegral (QVector< QPointF > points, QColor color, qreal alpha=1.0)

Private Attributes

GraphStyle _graphStyle
QPainter * _painter
QList< qreal > * _recvData
QList< qreal > * _sendData
QRect _rec
qreal _maxValue
int _maxPoints
qreal _totalSend
qreal _totalRecv
bool _showRecv
bool _showSend
int _scaleWidth


Detailed Description

Definition at line 40 of file graphframe.h.


Member Enumeration Documentation

enum GraphFrame::GraphStyle

Bandwidth graph style.

Enumerator:
SolidLine  Plot bandwidth as solid lines.
AreaGraph  Plot bandwidth as alpha blended area graphs.

Definition at line 46 of file graphframe.h.


Constructor & Destructor Documentation

GraphFrame::GraphFrame ( QWidget *  parent = 0  ) 

Default Constructor

Definition at line 23 of file graphframe.cpp.

References _graphStyle, _maxPoints, _maxValue, _painter, _recvData, _scaleWidth, _sendData, _showRecv, _showSend, getNumPoints(), MIN_SCALE, and SolidLine.

GraphFrame::~GraphFrame (  ) 

Default Destructor

Definition at line 43 of file graphframe.cpp.

References _painter, _recvData, and _sendData.


Member Function Documentation

void GraphFrame::addPoints ( qreal  recv,
qreal  send 
)

Add data points.

Definition at line 62 of file graphframe.cpp.

References _maxPoints, _maxValue, _recvData, _sendData, _totalRecv, and _totalSend.

int GraphFrame::getNumPoints (  )  [private]

Gets the width of the desktop, the max # of points.

Definition at line 53 of file graphframe.cpp.

Referenced by GraphFrame().

int GraphFrame::labelWidth ( const QString &  label  )  [private]

Returns the width in pixels of label using the current painter's font.

Definition at line 272 of file graphframe.cpp.

References i().

Referenced by paintScale().

void GraphFrame::paintData (  )  [private]

Paints an integral and an outline of that integral for each data set (send and/or receive) that is to be displayed.

Definition at line 145 of file graphframe.cpp.

References _graphStyle, _recvData, _sendData, _showRecv, _showSend, AreaGraph, paintIntegral(), paintLine(), pointsFromData(), RECV_COLOR, and SEND_COLOR.

Referenced by paintEvent().

void GraphFrame::paintEvent ( QPaintEvent *  event  )  [protected]

Overloaded QWidget::paintEvent()

Definition at line 111 of file graphframe.cpp.

References _painter, _rec, BACK_COLOR, paintData(), paintScale(), and paintTotals().

void GraphFrame::paintIntegral ( QVector< QPointF >  points,
QColor  color,
qreal  alpha = 1.0 
) [private]

Paints an integral using the supplied data.

Definition at line 199 of file graphframe.cpp.

References _painter.

Referenced by paintData().

void GraphFrame::paintLine ( QVector< QPointF >  points,
QColor  color,
Qt::PenStyle  lineStyle = Qt::SolidLine 
) [private]

Paints a line with the data in points.

Definition at line 212 of file graphframe.cpp.

References _painter.

Referenced by paintData().

void GraphFrame::paintScale (  )  [private]

Paints the scale in the graph.

Definition at line 284 of file graphframe.cpp.

References _maxValue, _painter, _rec, _scaleWidth, GRID_COLOR, i(), labelWidth(), and SCALE_COLOR.

Referenced by paintEvent().

void GraphFrame::paintTotals (  )  [private]

Paints the send/receive totals.

Definition at line 223 of file graphframe.cpp.

References _painter, _recvData, _scaleWidth, _sendData, _showRecv, _showSend, _totalRecv, _totalSend, FONT_SIZE, RECV_COLOR, SEND_COLOR, and totalToStr().

Referenced by paintEvent().

QVector< QPointF > GraphFrame::pointsFromData ( QList< qreal > *  list  )  [private]

Returns a list of points on the bandwidth graph based on the supplied set of send or receive values.

Definition at line 172 of file graphframe.cpp.

References _maxValue, _rec, _scaleWidth, i(), and SCROLL_STEP.

Referenced by paintData().

void GraphFrame::resetGraph (  ) 

Clears the graph.

Definition at line 87 of file graphframe.cpp.

References _maxValue, _recvData, _sendData, _totalRecv, _totalSend, and MIN_SCALE.

void GraphFrame::setGraphStyle ( GraphStyle  style  )  [inline]

Sets the graph style used to display bandwidth data.

Definition at line 63 of file graphframe.h.

References _graphStyle.

void GraphFrame::setShowCounters ( bool  showRecv,
bool  showSend 
)

Toggles display of data counters.

Definition at line 101 of file graphframe.cpp.

References _showRecv, and _showSend.

QString GraphFrame::totalToStr ( qreal  total  )  [private]

Returns a formatted string representation of total.

Definition at line 254 of file graphframe.cpp.

Referenced by paintTotals().


Member Data Documentation

GraphStyle GraphFrame::_graphStyle [private]

Style with which the bandwidth data will be graphed.

Definition at line 94 of file graphframe.h.

Referenced by GraphFrame(), paintData(), and setGraphStyle().

int GraphFrame::_maxPoints [private]

The maximum number of points to store.

Definition at line 106 of file graphframe.h.

Referenced by addPoints(), and GraphFrame().

qreal GraphFrame::_maxValue [private]

The maximum data value plotted.

Definition at line 104 of file graphframe.h.

Referenced by addPoints(), GraphFrame(), paintScale(), pointsFromData(), and resetGraph().

QPainter* GraphFrame::_painter [private]

A QPainter object that handles drawing the various graph elements.

Definition at line 96 of file graphframe.h.

Referenced by GraphFrame(), paintEvent(), paintIntegral(), paintLine(), paintScale(), paintTotals(), and ~GraphFrame().

QRect GraphFrame::_rec [private]

The current dimensions of the graph.

Definition at line 102 of file graphframe.h.

Referenced by paintEvent(), paintScale(), and pointsFromData().

QList<qreal>* GraphFrame::_recvData [private]

Holds the received data points.

Definition at line 98 of file graphframe.h.

Referenced by addPoints(), GraphFrame(), paintData(), paintTotals(), resetGraph(), and ~GraphFrame().

int GraphFrame::_scaleWidth [private]

Width (in pixels) of the scale marker area on the left side of the graph.

Definition at line 115 of file graphframe.h.

Referenced by GraphFrame(), paintScale(), paintTotals(), and pointsFromData().

QList<qreal>* GraphFrame::_sendData [private]

Holds the sent data points.

Definition at line 100 of file graphframe.h.

Referenced by addPoints(), GraphFrame(), paintData(), paintTotals(), resetGraph(), and ~GraphFrame().

bool GraphFrame::_showRecv [private]

Show the respective lines and counters.

Definition at line 111 of file graphframe.h.

Referenced by GraphFrame(), paintData(), paintTotals(), and setShowCounters().

bool GraphFrame::_showSend [private]

Definition at line 112 of file graphframe.h.

Referenced by GraphFrame(), paintData(), paintTotals(), and setShowCounters().

qreal GraphFrame::_totalRecv [private]

Definition at line 109 of file graphframe.h.

Referenced by addPoints(), paintTotals(), and resetGraph().

qreal GraphFrame::_totalSend [private]

The total data sent/recv.

Definition at line 108 of file graphframe.h.

Referenced by addPoints(), paintTotals(), and resetGraph().


The documentation for this class was generated from the following files:
Generated on Tue Jul 7 16:58:27 2009 for Vidalia by  doxygen 1.4.7