Created V0.3.x branch and moved the head into the trunk directory.

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@246 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/gui/graphframe.h

@@ -0,0 +1,120 @@
+/****************************************************************
+ *  RetroShare is distributed under the following license:
+ *
+ *  Copyright (C) 2007,  
+ *
+ *  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 Street, Fifth Floor, 
+ *  Boston, MA  02110-1301, USA.
+ ****************************************************************/
+
+
+#ifndef _GRAPHFRAME_H
+#define _GRAPHFRAME_H
+
+#include <QApplication>
+#include <QDesktopWidget>
+#include <QFrame>
+#include <QPainter>
+#include <QPen>
+#include <QList>
+
+#define HOR_SPC       2   /** Space between data points */
+#define SCALE_WIDTH   75  /** Width of the scale */
+#define MIN_SCALE     10  /** 10 kB/s is the minimum scale */  
+#define SCROLL_STEP   4   /** Horizontal change on graph update */
+
+#define BACK_COLOR    Qt::black
+#define SCALE_COLOR   Qt::green
+#define GRID_COLOR    Qt::darkGreen
+#define RECV_COLOR    Qt::cyan
+#define SEND_COLOR    Qt::yellow
+
+#define FONT_SIZE     11
+
+
+class GraphFrame : public QFrame
+{
+  Q_OBJECT
+
+public:
+  /** Bandwidth graph style. */
+  enum GraphStyle {
+    SolidLine = 0,  /**< Plot bandwidth as solid lines. */
+    AreaGraph       /**< Plot bandwidth as alpha blended area graphs. */
+  };
+  
+  /** Default Constructor */
+  GraphFrame(QWidget *parent = 0);
+  /** Default Destructor */
+  ~GraphFrame();
+
+  /** Add data points. */
+  void addPoints(qreal recv, qreal send);
+  /** Clears the graph. */
+  void resetGraph();
+  /** Toggles display of data counters. */
+  void setShowCounters(bool showRecv, bool showSend);
+  /** Sets the graph style used to display bandwidth data. */
+  void setGraphStyle(GraphStyle style) { _graphStyle = style; }
+
+protected:
+  /** Overloaded QWidget::paintEvent() */
+  void paintEvent(QPaintEvent *event);
+
+private:
+  /** Gets the width of the desktop, the max # of points. */
+  int getNumPoints();
+  
+  /** Paints an integral and an outline of that integral for each data set
+   * (send and/or receive) that is to be displayed. */
+  void paintData();
+  /** Paints the send/receive totals. */
+  void paintTotals();
+  /** Paints the scale in the graph. */
+  void paintScale();
+  /** Returns a formatted string representation of total. */
+  QString totalToStr(qreal total);
+  /** Returns a list of points on the bandwidth graph based on the supplied set
+   * of send or receive values. */
+  QVector<QPointF> pointsFromData(QList<qreal>* list);
+  /** Paints a line with the data in <b>points</b>. */
+  void paintLine(QVector<QPointF> points, QColor color, 
+                 Qt::PenStyle lineStyle = Qt::SolidLine);
+  /** Paints an integral using the supplied data. */
+  void paintIntegral(QVector<QPointF> points, QColor color, qreal alpha = 1.0);
+
+  /** Style with which the bandwidth data will be graphed. */
+  GraphStyle _graphStyle;
+  /** A QPainter object that handles drawing the various graph elements. */
+  QPainter* _painter;
+  /** Holds the received data points. */
+  QList<qreal> *_recvData;
+  /** Holds the sent data points. */
+  QList<qreal> *_sendData;
+  /** The current dimensions of the graph. */
+  QRect _rec;
+  /** The maximum data value plotted. */
+  qreal _maxValue;
+  /** The maximum number of points to store. */
+  int _maxPoints;
+  /** The total data sent/recv. */
+  qreal _totalSend;
+  qreal _totalRecv;
+  /** Show the respective lines and counters. */
+  bool _showRecv;
+  bool _showSend;
+};
+
+#endif