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/***************************************************************************
* Copyright © 2007 by Krzysztof Kundzicz *
* athantor@gmail.com *
* *
* 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifndef CHARTDRAWER_H_
#define CHARTDRAWER_H_
#include <qwidget.h>
#include <qpainter.h>
#include <qstring.h>
#include <qtooltip.h>
#include <qmime.h>
#include <qimage.h>
#include <klocale.h>
#include <vector>
#include <cmath>
#include <algorithm> //fill
#include "ChartDrawerData.h"
namespace kt {
/**
\brief Widget for drawing line charts
\author Krzysztof Kundzicz <athantor@gmail.com>
*/
class ChartDrawer : public QWidget
{
Q_OBJECT
public:
///Type used as widget size unit
typedef uint32_t wgtsize_t;
///Type used as unit in chart
typedef int64_t wgtunit_t;
/**
\brief Type used for data storing
\sa ChartDrawerData
*/
typedef std::vector<ChartDrawerData> val_t;
///Determines max mode
enum MaxMode { MaxModeTop, MaxModeExact };
private:
///Maximum X value
wgtsize_t mXMax;
///Maximum Y value
wgtsize_t mYMax;
///Auto maximum setting
bool mAutoMax;
///Chart data
val_t mEls;
///Name of the chart unit
QString mUnitName;
///Mark max
std::vector<bool> mMarkMax;
///Max mode
MaxMode mMMode;
///Paint event handler
void paintEvent ( QPaintEvent * );
/**
\brief Draws chart's frame
\param rPnt Painter on which things will be drawn
*/
void DrawFrame(QPainter &rPnt);
/**
\brief Draws chart's scale
\param rPnt Painter on which things will be drawn
*/
void DrawScale(QPainter &rPnt);
/**
\brief Draws chart
\param rPnt Painter on which things will be drawn
*/
void DrawChart(QPainter &rPnt);
/**
\brief Gets distance between two values on OY
\return Distance
*/
inline wgtsize_t GetYScale() const;
/**
\brief Translates widget Y coord to cartesian
\param y Coord
\return Coord
*/
inline wgtunit_t TrY(const wgtunit_t y) const;
/**
\brief Returns charts height
\return Height
Return only height of the chart's inside the frame — not the whole widget's
*/
inline wgtunit_t height() const;
/**
\brief Returns charts width
\return Width
Return only width of the chart's inside the frame — not the whole widget's
*/
inline wgtunit_t width() const;
/**
\brief Finds screen X coord on the widget
\param x Coord
\return Screen coord
\warning Thera are rounding errors
*/
inline wgtunit_t FindXScreenCoords(const double x) const;
/**
\brief Finds screen Y coord on the widget
\param y Coord
\return Screen coord
\warning Thera are rounding errors
*/
inline wgtunit_t FindYScreenCoords(const double y) const;
///Sets tooltip with legend
void MakeLegendTooltip();
public:
/**
\brief Widget's constructor
\param p Parent
\param x_max Maximum X size
\param y_max Maximum Y size
\param autom Whether athomagically set the maximum Y size
\param uname Unit name
*/
ChartDrawer(QWidget *p = 0, wgtsize_t x_max = 2, wgtsize_t y_max = 1, bool autom = true, const QString & uname = "KB/s");
~ChartDrawer();
/**
\brief Gets maximum X
\return Maximum X
*/
wgtsize_t GetXMax() const;
/**
\brief Gets maximum Y
\return Maximum Y
*/
wgtsize_t GetYMax() const;
/**
\brief Sets the units name
\param rN Name
\note It'l be drawn on the chart
*/
void SetUnitName(const QString & rN);
/**
\brief Gets unit name
\return name
*/
QString GetUnitName() const;
/**
\brief Doubleclick handler
\param evt Mouse event
*/
void mouseDoubleClickEvent ( QMouseEvent * evt );
/**
\brief Gets mode of OY axis maximum drawing
\return mode
*/
MaxMode GetMaxMode() const;
public slots:
/**
\brief Adds value to given dataset
\param idx Dataset index
\param val Value to add
\param update Whether update widget after adding
*/
void AddValue(const size_t idx, const double val, bool update = true);
/**
\brief Adds dataset
\param Cdd Dataset
\param max Whether mark maximum of this dataset
*/
void AddValues(ChartDrawerData Cdd, const bool max = true);
/**
\brief Adds dataset
\param Cdd Dataset
\param idx Where
\param max Whether mark maximum of this dataset
*/
void AddValues(ChartDrawerData Cdd, const size_t idx, const bool max = true);
/**
\brief Adds empty dataset
\param rN Set's data name
\param max Whether mark maximum of this dataset
*/
void AddValuesCnt(const QString & rN, const bool max = true);
/**
\brief Adds empty dataset
\param rP Pen that will be used to drawing
\param rN Dataset name
\param max Whether mark maximum of this dataset
*/
void AddValuesCnt(const QPen & rP, const QString & rN, const bool max = true );
/**
\brief Removes dataset
\param idx Dataset index
*/
void RemoveValuesCnt(const size_t idx);
/**
\brief Zeroes values
\param idx Dataset index
*/
void Zero(const size_t idx);
///Finds and sets maximum
void FindSetMax();
/**
\brief Toggles marking of the maximum Y value on given dataset
\param at dataset
\param e Toggle?
*/
void EnableMaxDrawAt(const size_t, const bool);
/**
\brief Toggles automatic max Y scale settin
\param a Toggle?
*/
void EnableAutoMax(bool a);
/**
\brief Sets maximum X
\param x X size
*/
void SetXMax(const wgtsize_t x);
/**
\brief Sets maximum Y
\param y Y size
*/
void SetYMax(const wgtsize_t x);
/**
\brief Sets mode of max of OY axis
\param mm Mode
*/
void SetMaxMode(const MaxMode mm);
signals:
/**
\brief Emited when widget is doubleclicked
\param evt Mouse event
*/
void DoubleClicked(QMouseEvent * evt);
};
}
#endif
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