Source: /app/hbasic/hbasic/lib_calc_sheet/diagram_wgt.h

/* **************************************************************************
 File: diagram_wgt.h
 Desc: Widget to display result of diagram data
 ----------------------------------------------------------------------------
	copyright            : (C) 2001 HBasic project (Marcus Engels)
 ***************************************************************************/

/* **************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

/* ----------------------------------------------------------------------- */
/* Classlist: List of classes that will be defined in this source file.    */
/* ----------------------------------------------------------------------- */
/*
 * class CDiagramWidget: Diagram widget.
 */

/* ----------------------------------------------------------------------- */
/* Changelog: Description of important changes within this file.           */
/*            Please report with date, maintainer and change description.  */
/* ----------------------------------------------------------------------- */

#ifndef DIAGRAM_H
#define DIAGRAM_H

#include 

class QComboBox;
class QPushButton;

#include "structs.h"
#include "window_list.h"

#include "../hbdata/hbdatatable.h"

#define GRAPH_TYPE_BOX 0
#define GRAPH_TYPE_LINE 1
#define GRAPH_TYPE_LINE_FILL 2
#define GRAPH_TYPE_BOX3D 3

class CDiagramWidget : public QWidget
{
Q_OBJECT

public:
	CDiagramWidget( QWidget *parent, HBDataTable *new_data );

/**
 * Set the type of graph to be used to display the data values.
 */
	void setGraphType( int new_type );

private:
	HBDataTable *data_ptr;
	long data_line_length;

	int chart_type;
	int draw_frame;
	int dot_picture;

	int data_xstart;
	int data_ystart;
	int data_xend;
	int data_yend;
	int entry_width;
	int entry_distance;

	int pic_xstart;
	int pic_ystart;
	int pic_width;
	int pic_height;

	/* Size of the table */

	int data_columns;
	int data_rows;

	/* pointer to tables of min and maxvalues */
	double data_min_value;
	double data_max_value;
	double data_difference;
	double xdata_difference;
	double data_offset;

	void paintEvent( QPaintEvent *evt );
	void showFrame( QPainter *p );
};

/**
 * class CDiagramWidget : widget to display diagram data
 */

class CDiagramWindow : public CWindowListChild
{
	Q_OBJECT

public:
	CDiagramWindow( QWidget *parent, HBDataTable *new_data );


private:
	HBDataTable *data_ptr;

	QPushButton *btn_print;
	CDiagramWidget *display_wgt;
	QComboBox *lb_select_graph;

	void resizeEvent( QResizeEvent *evt );

private slots:
	void slotGraphChanged( int index );
	void slotPrintDiagram( void );
};

#endif