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git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@7605 b45a01b8-16f6-495d-af2f-9b41ad6348cc
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csoler 2014-10-12 21:12:58 +00:00
parent d365efa493
commit 9d2a22bbb0
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177
retroshare-gui/src/gui/common/RSGraphWidget.h Normal file
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/****************************************************************
* This file is distributed under the following license:
*
* Copyright (C) 2014 RetroShare Team
* Copyright (c) 2006-2007, crypton
* Copyright (c) 2006, Matt Edman, Justin Hipple
*
* 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.
****************************************************************/
#pragma once
#include <QApplication>
#include <QDesktopWidget>
#include <QFrame>
#include <stdint.h>
#define HOR_SPC 2 /** Space between data points */
#define SCALE_WIDTH 75 /** Width of the scale */
#define MINUSER_SCALE 2000 /** 2000 users is the minimum scale */
#define SCROLL_STEP 4 /** Horizontal change on graph update */
#define BACK_COLOR Qt::white
#define SCALE_COLOR Qt::black
#define GRID_COLOR Qt::black
#define RSDHT_COLOR Qt::magenta
#define ALLDHT_COLOR Qt::yellow
#define FONT_SIZE 11
// This class provides a source value that the graph can retrieve on demand.
// In order to use your own source, derive from RSGraphSource and overload the value() method.
//
class RSGraphSource: public QObject
{
Q_OBJECT
public:
RSGraphSource();
virtual ~RSGraphSource() ;
void start() ;
void stop() ;
void clear() ;
virtual int n_values() const =0; // Method to overload in your own class
// Returns the n^th interpolated value at the given time in floating point seconds backward.
virtual void getDataPoints(int index, std::vector<QPointF>& pts) const ;
// Sets the maximum time for keeping values. Units=seconds.
void setCollectionTimeLimit(qint64 msecs) ;
// Sets the time period for collecting new values. Units=milliseconds.
void setCollectionTimePeriod(qint64 msecs) ;
protected slots:
// Calls the internal source for a new data points; called by the timer.
void update() ;
protected:
virtual void getValues(std::vector<float>& values) const = 0 ; // overload this in your own class to fill in the values you want to display.
qint64 getTime() const ; // returns time in ms since RS has started
std::list<std::pair<qint64,std::vector<float> > > _points ;
QTimer *_timer ;
qint64 _time_limit_msecs ;
qint64 _update_period_msecs ;
qint64 _time_orig_msecs ;
};
class RSGraphWidget: public QFrame
{
Q_OBJECT
public:
static const uint32_t RSGRAPH_FLAGS_AUTO_SCALE_Y = 0x0001 ; // automatically adjust Y scale
static const uint32_t RSGRAPH_FLAGS_LOG_SCALE_Y = 0x0002 ; // log scale in Y
static const uint32_t RSGRAPH_FLAGS_ALWAYS_COLLECT = 0x0004 ; // keep collecting while not displayed
/** Bandwidth graph style. */
enum GraphStyle
{
SolidLine = 0, /**< Plot bandwidth as solid lines. */
AreaGraph = 1 /**< Plot bandwidth as alpha blended area graphs. */
};
/** Default Constructor */
RSGraphWidget(QWidget *parent = 0);
/** Default Destructor */
~RSGraphWidget();
// sets the update interval period.
//
void setTimerPeriod(int miliseconds) ;
void addSource(RSGraphSource *gs) ;
void setTimeScale(float pixels_per_second) ;
/** Add data points. */
//void addPoints(qreal rsDHT, qreal allDHT);
/** Clears the graph. */
void resetGraph();
/** Toggles display of data counters. */
//void setShowCounters(bool showRSDHT, bool showALLDHT);
/** Sets the graph style used to display bandwidth data. */
void setGraphStyle(GraphStyle style) { _graphStyle = style; }
protected:
/** Overloaded QWidget::paintEvent() */
void paintEvent(QPaintEvent *event);
protected slots:
void updateDisplay() {}
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
* (rsdht and/or alldht) that is to be displayed. */
void paintData();
/** Paints the rsdht/alldht 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 rsdht or alldht values. */
void pointsFromData(QVector<QPointF> & ) ;
/** Paints a line with the data in <b>points</b>. */
void paintLine(const QVector<QPointF>& points, QColor color,
Qt::PenStyle lineStyle = Qt::SolidLine);
/** Paints an integral using the supplied data. */
void paintIntegral(const 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;
/** The current dimensions of the graph. */
QRect _rec;
/** The maximum data value plotted. */
qreal _maxValue;
/** The maximum number of points to store. */
int _maxPoints;
qreal _time_scale ; // horizontal scale in pixels per sec.
/** Show the respective lines and counters. */
//bool _showRSDHT;
//bool _showALLDHT;
uint32_t _flags ;
QTimer *_timer ;
std::vector<RSGraphSource *> _sources ;
};