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Text File | 1990-01-19 | 32.7 KB | 1,096 lines |
- #include <stdlib.h>
- #include <stdio.h>
- #include <conio.h>
- #include <string.h>
- #include <graph.h>
- #include <pgchart.h>
- #include "chrtdemo.h"
-
- /* Structures for system configuration and chart environment. */
- struct videoconfig vc;
- chartenv ce;
-
- /* Category variables. */
- short cCat;
- char _far *aCat[MAXVALUES];
-
- /* Series variables. */
- short cSeries;
- short _far acSeries[MAXSERIES];
- char _far *aSeriesName[MAXSERIES];
-
- /* Temporary holding array for all data. Data values for multi-series
- * bar, column, and line charts remain here. Data for other kinds of
- * charts are transferred to the arrays below.
- */
- float _far aValue[MAXSERIES][MAXVALUES];
-
- /* Data values for single-series charts. First array is used for
- * bar, column, line, and pie. First and second are both used for
- * single-series scatter.
- */
- float _far axValue[MAXVALUES];
- float _far ayValue[MAXVALUES];
-
- /* Data values for multi-series scatter charts. */
- float _far axValueMS[MAXVALUES][MAXVALUES];
- float _far ayValueMS[MAXVALUES][MAXVALUES];
-
- /* Exploded flags for pie chart. */
- short _far aExplode[MAXVALUES];
-
- /* Variable used to track control and screen position. */
- struct SCREENINFO si;
-
- /* Colors of menus and prompts. */
- struct tagColor co;
-
- /* Flags to indicate whether to use imported or default data. */
- BOOL fDefault = TRUE;
-
- /* Arrays of strings used by the Menu function. The first string is the
- * menu title. The next non-null strings are the menu selections. A null
- * string indicates the end of the list.
- */
- char *pszChartOpt[] =
- { "Options", "Screen Mode", "Windows", "Titles",
- "Axis (X and Y)", "Legend", "Fonts", "Reset", "" };
-
- char *pszChartType[] =
- { "Type", "Bar", "Column", "Line", "Scatter", "Pie", "" };
-
- char *pszMainMenu[] =
- { "Main Menu", "Demo", "View Chart", "Chart Type", "Options",
- "Show Chart Data", "Quit", "" };
-
- /* Sample data. */
- #define O_JUICE 0
- #define I_TEA 1
- #define H_CHOC 2
- #define TEMPERATURE 3
-
- char _far *aQuarters[] =
- { "First", "Second", "Third", "Fourth" };
-
- char _far *aMonths[] =
- { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
-
- float _far aSales[3][12] =
- {
- { 3.6F, 3.2F, 3.3F, 3.4F, 3.1F, 2.9F,
- 3.0F, 3.6F, 3.2F, 3.3F, 3.5F, 3.9F },
- { 1.0F, 1.3F, 1.4F, 1.7F, 2.2F, 2.9F,
- 2.9F, 3.1F, 2.6F, 1.8F, 1.1F, 1.2F },
- { 2.4F, 2.3F, 2.0F, 1.6F, 1.3F, 1.0F,
- 0.9F, 0.8F, 1.1F, 1.4F, 1.9F, 2.5F }
- };
-
- float _far aTemperature[12] =
- { 2.9F, 3.2F, 3.9F, 4.8F, 6.0F, 6.5F,
- 7.0F, 7.2F, 6.0F, 4.7F, 4.1F, 3.0F };
-
- char _far *aSalesTitles[] =
- { "Orange Juice Sales", "Iced Tea Sales", "Hot Chocolate Sales" };
-
- char *TempTitle = "Average Temperature";
-
- int main()
- {
- Initialize();
- MainMenu();
-
- /* Reset the video mode and screen colors prior to leaving. */
- _setvideomode( _DEFAULTMODE );
- _settextcolor( co.InfoColor );
- _clearscreen( _GCLEARSCREEN );
-
- return 0;
- }
-
- /* ChartOptions - Gets chart options.
- *
- * Params: None
- */
- void ChartOptions()
- {
- int iChoice;
-
- PushTitle( pszChartOpt[0] );
- while( (iChoice = Menu( pszChartOpt )) != ESCAPE )
- {
-
- /* Get chart options. */
- switch( iChoice )
- {
-
- /* Branch to the appropriate menu. */
- case 1:
- ScreenMode();
- break;
-
- case 2:
- Windows();
- break;
-
- case 3:
- Titles();
- break;
-
- case 4:
- Axes();
- break;
-
- case 5:
- Legend();
- break;
-
- case 6:
- FontOptions();
- break;
-
- case 7:
- ResetOptions();
- break;
-
- }
- }
- PopTitle();
- }
-
- /* ChartType - Gets chart type.
- *
- * Params: None
- */
- void ChartType()
- {
- int iChoice;
-
- /* Get chart type. */
- PushTitle( pszChartType[0] );
- iChoice = Menu( pszChartType );
-
- if( iChoice != ESCAPE )
- {
- /* Set the chart type, and get the chart style. */
- ce.charttype = iChoice;
- switch( iChoice )
- {
-
- case 1:
- case 2:
- iChoice = BlankMenu( "Style", "Plain Bars", "Stacked Bars" );
- break;
-
- case 3:
- case 4:
- iChoice = BlankMenu( "Style", "Lines-Points", "Points Only" );
- break;
-
- case 5:
- iChoice = BlankMenu( "Style", "Percent", "No Percent" );
- }
-
- if( iChoice != ESCAPE)
- ce.chartstyle = iChoice;
-
- /* Set default data without changing environment defaults. */
- DefaultData( ce.charttype, ce.chartstyle, FALSE );
- PopTitle();
- }
- PopTitle();
- }
-
- /* ClearData - Clears category and value data.
- *
- * Params: fConfirm - flag specifying whether to query for confirmation
- */
- void ClearData( BOOL fConfirm )
- {
- char chResponse = 'Y';
- int iCat;
-
- WrtForm( 18 );
-
- /* Query for confirmation. */
- if( fConfirm )
- chResponse = InputCh( "Are you sure? ", "YN\x1b" );
-
- if( chResponse == 'Y' )
- {
-
- /* Clear all relevant data. */
- for( iCat = 0; iCat < cCat; iCat++ )
- aCat[iCat] = NULL;
- cCat = 0;
- cSeries = 0;
- }
- }
-
- /* DefaultData - Initializes default data for each kind of chart.
- *
- * Params: iType - Chart type to be initialized
- * iStyle - Chart style
- * fClear - Signal to clear all defaults
- */
- void DefaultData( short iType, short iStyle, BOOL fClear )
- {
- int iCat, iValue, iSubValue, iSeries;
-
- /* Call default chart to clear old values. */
- if( fClear )
- _pg_defaultchart( &ce, iType, iStyle );
-
- /* Initialize category titles. */
- cCat = 12;
- for( iCat = 0; iCat < cCat; iCat++ )
- aCat[iCat] = aMonths[iCat];
-
- switch( ce.charttype )
- {
-
- /* Initialize data for each chart type. */
- case _PG_BARCHART:
-
- strcpy( ce.maintitle.title, "Orange Juice and Iced Tea Sales" );
- cSeries = 2;
- for( iSeries = 0; iSeries < cSeries; iSeries++ )
- {
- aSeriesName[iSeries] = aSalesTitles[iSeries];
- acSeries[iSeries] = cCat;
- for( iValue = 0; iValue < cCat; iValue++ )
- aValue[iSeries][iValue] = (float)aSales[iSeries][iValue];
- }
- break;
-
- case _PG_COLUMNCHART:
-
- strcpy( ce.maintitle.title, "Orange Juice Sales" );
- cSeries = 1;
- for( iSeries = 0; iSeries < cSeries; iSeries++ )
- {
- aSeriesName[iSeries] = aSalesTitles[iSeries];
- acSeries[iSeries] = cCat;
- for( iValue = 0; iValue < cCat; iValue++ )
- aValue[iSeries][iValue] = (float)aSales[iSeries][iValue];
- }
- break;
-
- case _PG_LINECHART:
-
- strcpy( ce.maintitle.title, "Beverage Sales" );
- cSeries = 3;
- for( iSeries = 0; iSeries < cSeries; iSeries++ )
- {
- aSeriesName[iSeries] = aSalesTitles[iSeries];
- acSeries[iSeries] = cCat;
- for( iValue = 0; iValue < cCat; iValue++ )
- aValue[iSeries][iValue] = (float)aSales[iSeries][iValue];
- }
- break;
-
- case _PG_SCATTERCHART:
-
- strcpy( ce.maintitle.title,
- "Average Temperature Compared to Beverage Sales" );
- /* ce.chartstyle = _PG_POINTONLY; */
- cSeries = 4;
-
- aSeriesName[0] = aSalesTitles[I_TEA];
- aSeriesName[2] = aSalesTitles[H_CHOC];
- acSeries[0] = acSeries[1] = acSeries[2] = acSeries[3] = 12;
- for( iValue = 0; iValue < 12; iValue++ )
- {
- aValue[0][iValue] = (float)aSales[I_TEA][iValue] ;
- aValue[1][iValue] = (float)aSales[TEMPERATURE][iValue] ;
- aValue[2][iValue] = (float)aSales[H_CHOC][iValue] ;
- aValue[3][iValue] = (float)aSales[TEMPERATURE][iValue] ;
- }
- break;
-
- case _PG_PIECHART:
- default:
-
- strcpy( ce.maintitle.title, "Iced Tea Sales" );
- cCat = 4;
- for( iCat = 0; iCat < cCat; iCat++ )
- aCat[iCat] = aQuarters[iCat];
-
- cSeries = 1;
- aSeriesName[0] = aSalesTitles[I_TEA];
- acSeries[0] = cCat;
-
- for( iValue = 0; iValue < cCat; iValue++ )
- {
- aValue[0][iValue] = 0.0;
- for( iSubValue = 0; iSubValue < 3; iSubValue++ )
- aValue[0][iValue] += (float)aSales[I_TEA][iSubValue * iValue];
- }
- aExplode[3] = 1;
- break;
- }
- }
-
- /* Demo - Displays a series of sample charts.
- *
- * Params: None
- */
- void Demo()
- {
- int cValue;
- palettetype palette_struct;
-
- /* Display the sample data in spreadsheet form. */
- ShowSampleData();
-
- DefaultData( _PG_PIECHART, _PG_NOPERCENT, TRUE );
-
- /* Set video mode and draw charts. For each chart, set default
- * data and modify any desired environment fields. If error,
- * terminate demo.
- */
- _setvideomode( si.mode );
-
- cValue = 4;
- strcpy( ce.subtitle.title, "Default Pie Chart" );
- if( ViewChart() )
- return;
- else
- _clearscreen( _GCLEARSCREEN );
-
- strcpy( ce.subtitle.title, "Customized Pie Chart" );
- ce.chartstyle = _PG_PERCENT;
- ce.legend.place = _PG_BOTTOM;
- if (si.fColor)
- {
- ce.maintitle.titlecolor = ce.subtitle.titlecolor = 0;
- ce.chartwindow.background = 1;
- ce.datawindow.background = ce.legend.legendwindow.background = 6;
- ce.legend.textcolor = 1;
- }
- if( ViewChart() )
- return;
- else
- _clearscreen( _GCLEARSCREEN );
-
- cValue = 12;
- DefaultData( _PG_BARCHART, _PG_PLAINBARS, TRUE );
- strcpy( ce.subtitle.title, "Default Bar Chart" );
- if( ViewChart() )
- return;
- else
- _clearscreen( _GCLEARSCREEN );
-
- strcpy( ce.subtitle.title, "Customized Stacked Bar Chart" );
- strcpy( ce.xaxis.axistitle.title, "Sales in Thousands" );
- strcpy( ce.yaxis.axistitle.title, "Month" );
- ce.chartstyle = _PG_STACKEDBARS;
- ce.legend.place = _PG_RIGHT;
- ce.xaxis.ticdecimals = 2;
- if (si.fColor)
- {
- ce.maintitle.titlecolor = ce.subtitle.titlecolor = 12;
- ce.chartwindow.background = 7;
- ce.datawindow.background = 8;
- ce.legend.textcolor = 0;
- ce.legend.legendwindow.background = 8;
- ce.legend.autosize = FALSE;
- ce.legend.legendwindow.y1 = vc.numypixels - 85;
- ce.legend.legendwindow.y2 = vc.numypixels - 45;
- }
- if( ViewChart() )
- return;
- else
- _clearscreen( _GCLEARSCREEN );
-
- DefaultData( _PG_COLUMNCHART, _PG_PLAINBARS, TRUE );
- strcpy( ce.subtitle.title, "Default Column Chart" );
- if( ViewChart() )
- return;
- else
- _clearscreen( _GCLEARSCREEN );
-
- strcpy( ce.subtitle.title, "Customized Column Chart" );
- strcpy( ce.xaxis.axistitle.title, "Month" );
- strcpy( ce.yaxis.axistitle.title, "Sales in Thousands" );
- ce.legend.place = _PG_BOTTOM;
- if (si.fColor)
- {
- ce.maintitle.titlecolor = 0;
- ce.subtitle.titlecolor = 0;
- ce.chartwindow.background = 8;
- ce.datawindow.background = 2;
- ce.legend.legendwindow.background = 10;
- }
- if( ViewChart() )
- return;
- else
- _clearscreen( _GCLEARSCREEN );
-
- DefaultData( _PG_LINECHART, _PG_POINTANDLINE, TRUE );
- strcpy( ce.subtitle.title, "Default Line Chart" );
- if( ViewChart() )
- return;
- else
- _clearscreen( _GCLEARSCREEN );
-
- strcpy( ce.subtitle.title, "Customized Line Chart" );
- strcpy( ce.xaxis.axistitle.title, "Month" );
- strcpy( ce.yaxis.axistitle.title, "Sales in Thousands" );
- ce.legend.place = _PG_RIGHT;
- if (si.fColor)
- {
- ce.maintitle.titlecolor = 1;
- ce.subtitle.titlecolor = 1;
- ce.chartwindow.background = 3;
- ce.datawindow.background = 7;
- ce.legend.legendwindow.background = 7;
- ce.legend.autosize = FALSE;
- ce.legend.legendwindow.y1 = vc.numypixels - 85;
- ce.legend.legendwindow.y2 = vc.numypixels - 45;
- }
- if( ViewChart() )
- return;
- else
- _clearscreen( _GCLEARSCREEN );
-
- DefaultData( _PG_SCATTERCHART, _PG_POINTONLY, TRUE );
- strcpy( ce.subtitle.title, "Default Scatter Chart" );
- if( ViewChart() )
- return;
- else
- _clearscreen( _GCLEARSCREEN );
-
- cSeries = 4;
- strcpy( ce.subtitle.title, "Customized Scatter Chart" );
- strcpy( ce.xaxis.axistitle.title, "Sales in Thousands" );
- strcpy( ce.yaxis.axistitle.title, "Average Temperature" );
- ce.legend.place = _PG_RIGHT;
- if (si.fColor)
- {
- ce.maintitle.titlecolor = 0;
- ce.subtitle.titlecolor = 0;
- ce.chartwindow.background = 4;
- ce.datawindow.background = 8;
- ce.legend.legendwindow.background = 8;
- ce.legend.autosize = FALSE;
- ce.legend.legendwindow.y1 = vc.numypixels - 85;
- ce.legend.legendwindow.y2 = vc.numypixels - 45;
- }
- if( ViewChart() )
- return;
- else
- _clearscreen( _GCLEARSCREEN );
-
- DefaultData( _PG_BARCHART, _PG_PERCENT, TRUE );
- }
-
- /* FindVideoMode - Finds the "best" video mode for the adaptor in use.
- *
- * Params: vc - structure of type struct videoconfig
- *
- * Returns: Best mode
- */
- int FindVideoMode( struct videoconfig vc )
- {
- switch( vc.adapter )
- {
- case _CGA:
- case _OCGA:
- return _HRESBW;
- case _EGA:
- case _OEGA:
- return( vc.monitor == _MONO ) ? _ERESNOCOLOR : _ERESCOLOR;
- case _VGA:
- case _OVGA:
- case _MCGA:
- return _VRES16COLOR;
- case _HGC:
- return _HERCMONO;
- default:
- return _DEFAULTMODE;
- }
- }
-
- /* Initialize - Does various initialization tasks.
- *
- * Params: None
- */
- void Initialize( void )
- {
- int iSeries, iValue;
-
- /* Initialize all value arrays to missing. */
- for( iSeries = 0; iSeries < MAXSERIES; iSeries++ )
- {
-
- axValue[iSeries] = _PG_MISSINGVALUE;
- ayValue[iSeries] = _PG_MISSINGVALUE;
-
- for( iValue = 0; iValue < MAXVALUES; iValue++ )
- aValue[iSeries][iValue] = _PG_MISSINGVALUE;
-
- for( iValue = 0; iValue < MAXVALUES; iValue++ )
- {
- axValueMS[iSeries][iValue] = _PG_MISSINGVALUE;
- ayValueMS[iSeries][iValue] = _PG_MISSINGVALUE;
- }
- }
-
- /* Initialize zero sets. */
- cSeries = 0;
-
- /* Initialize default chart environment, screen mode, and data. */
- _pg_initchart();
- _getvideoconfig( &vc );
-
- /* Find the best available mode for display.
- * Don't set 256 color, medium resolution (_MRES256COLOR).
- */
- si.mode = FindVideoMode( vc );
-
- if( si.mode == _TEXTMONO )
- {
- _clearscreen( _GCLEARSCREEN );
- _outtext( "No graphics available. Can't run chart demo." );
- exit( 1 );
- }
-
- SetDisplayColors();
-
- SetGraphMode( si.mode );
- DefaultData( _PG_BARCHART, _PG_PLAINBARS, TRUE );
-
- _setvideomode( _DEFAULTMODE );
-
-
- }
-
- /* MainMenu - Manages the main menu.
- *
- * Params: None
- */
- void MainMenu( void )
- {
- int iChoice;
- char chResponse = 'Y';
- char chVerify;
-
- PushTitle( pszMainMenu[0] );
- do
- {
- /* If the user selects Quit, iChoice will contain 6. If the
- * user presses ESCAPE, iChoice will be ESCAPE, which is
- * equal to 27. In any case, we can test both conditions
- * by checking to see whether iChoice is less than 6.
- */
- while( (iChoice = Menu( pszMainMenu )) < 6 )
- {
- /* Get main menu selection. */
- switch( iChoice )
- {
-
- case 1:
- /* Display demo charts. */
- Demo();
- _setvideomode( _DEFAULTMODE );
- break;
-
- case 2:
- /* Set graphics video mode, display current chart,
- * and restore text video mode.
- */
- _setvideomode( si.mode );
- ViewChart();
- _setvideomode( _DEFAULTMODE );
- break;
-
- case 3:
- /* Get chart type and style. */
- ChartType();
- break;
-
- case 4:
- /* Get chart options. */
- ChartOptions();
- break;
- case 5:
- /* Show chart data. */
- ShowChartData();
- break;
-
- }
-
- }
-
- /* If the user is trying to leave the program using the ESCAPE
- * key, we must verify the choice. This is done to prevent
- * an eager typist from pressing ESCAPE one time too often
- * and exiting at an unanticipated point.
- */
- if( iChoice == ESCAPE )
- {
- Help( "Press \"Q\" to Actually Quit", co.InputColor );
-
- putchar( BEEP );
- _settextposition( si.help - 1, 32 );
- chVerify = getch();
- if( tolower( chVerify ) != 'q' )
- iChoice = 0;
- else
- iChoice = 6;
- }
-
- } while( iChoice != 6 );
- PopTitle();
- }
-
- /* ResetOptions - After confirmation, resets chart options to default.
- *
- * Params: None
- */
- void ResetOptions()
- {
- char chResponse;
-
- /* Prompt for confirmation before setting default environment. */
- ClrForm();
- Help( "Type 'Y' to reset all options, 'N' to keep them.", co.InputColor );
- chResponse = InputCh( "Are you sure? ", "YN\x1b" );
- if( chResponse == 'Y' )
- _pg_defaultchart( &ce, 1, 1 );
-
- }
-
- /* SetGraphMode - Tests the specified graphics mode and sets the xMax
- * and yMax values in the si (Screen Information) structure.
- *
- * Params: mode number
- *
- * Return: FALSE if mode invalid, TRUE if valid
- */
- BOOL SetGraphMode(int mode)
- {
- if (!_setvideomode( mode ) )
- return FALSE;
- else
- {
- _getvideoconfig ( &vc );
- if( !vc.numxpixels )
- return FALSE;
- si.xMax = vc.numxpixels;
- si.yMax = vc.numypixels;
- si.mode = mode;
-
- /* Set flag to indicate whether multiple colors are available. */
- si.fColor = iscolor( mode );
-
- return TRUE;
- }
- }
-
- /* ShowChartData - Displays the data in the chart environment.
- *
- * Params: None
- */
- void ShowChartData()
- {
- int iRow = 2;
- struct _fontinfo fd;
- static char *szContinue =
- "Press any key to continue, ESC to return to the menu.";
-
- _clearscreen( _GCLEARSCREEN );
- SprintAt( iRow++, 1, "short charttype = %d", ce.charttype );
- SprintAt( iRow++, 1, "short chartstyle = %d", ce.chartstyle );
- SprintAt( iRow++, 1, "windowtype chartwindow =" );
- iRow = ShowWindowType( iRow, 1, ce.chartwindow );
- SprintAt( iRow++, 1, "windowtype datawindow =" );
- iRow = ShowWindowType( iRow, 1, ce.datawindow );
- SprintAt( ++iRow, 1, szContinue );
- if( getch() == ESCAPE )
- return;
-
- iRow = 2;
- _clearscreen( _GCLEARSCREEN );
- SprintAt( iRow++, 1, "titletype maintitle =" );
- iRow = ShowTitleType( iRow, 1, ce.maintitle );
- SprintAt( iRow++, 1, "titletype subtitle =" );
- iRow = ShowTitleType( iRow, 1, ce.subtitle );
- SprintAt( ++iRow, 1, szContinue );
- if( getch() == ESCAPE )
- return;
-
- iRow = 2;
- _clearscreen( _GCLEARSCREEN );
- SprintAt( iRow++, 1, "axistype xaxis =" );
- iRow = ShowAxisType( iRow, 1, ce.xaxis );
- SprintAt( ++iRow, 1, szContinue );
- if( getch() == ESCAPE )
- return;
-
- iRow = 2;
- _clearscreen( _GCLEARSCREEN );
- SprintAt( iRow++, 1, "axistype yaxis =" );
- iRow = ShowAxisType( iRow, 1, ce.yaxis );
- SprintAt( ++iRow, 1, szContinue );
- if( getch() == ESCAPE )
- return;
-
- iRow = 2;
- _clearscreen( _GCLEARSCREEN );
- SprintAt( iRow++, 1, "legendtype legend =" );
- iRow = ShowLegendType( iRow, 1, ce.legend );
- SprintAt( ++iRow, 1, szContinue );
- if( getch() == ESCAPE )
- return;
-
- iRow = 2;
- _clearscreen( _GCLEARSCREEN );
- if( _getfontinfo( &fd ) != -1 )
- {
- SprintAt( iRow++, 1, "struct _fontinfo =" );
- iRow = ShowFontInfo( iRow, 1, fd );
- SprintAt( ++iRow, 1, "Press any key to continue . . ." );
- getch();
- }
- }
-
- /* ShowAxisType - Displays data in a variable of type "axistype".
- *
- * Params: iRow - Row at which to start
- * iCol - Column from which to indent
- * theAxis - Variable of type "axistype" to display
- *
- * Return: Next available row
- */
- int ShowAxisType( int iRow, int iCol, axistype theAxis )
- {
- SprintAt( iRow++, iCol + 5, "short .grid = %d", theAxis.grid );
- SprintAt( iRow++, iCol + 5, "short .gridstyle = %d", theAxis.gridstyle );
- SprintAt( iRow++, iCol + 5, "titletype axistitle=" );
- iRow = ShowTitleType( iRow, iCol + 5, theAxis.axistitle );
- SprintAt( iRow++, iCol + 5, "short .axiscolor = %d", theAxis.axiscolor );
- SprintAt( iRow++, iCol + 5, "short .labeled = %s",
- (theAxis.labeled) ? "TRUE" : "FALSE" );
- SprintAt( iRow++, iCol + 5, "short .rangetype = %d", theAxis.rangetype );
- SprintAt( iRow++, iCol + 5, "float .logbase = %f", theAxis.logbase );
- SprintAt( iRow++, iCol + 5, "short .autoscale = %s",
- (theAxis.autoscale) ? "TRUE" : "FALSE" );
- SprintAt( iRow++, iCol + 5, "float .scalemin = %f", theAxis.scalemin );
- SprintAt( iRow++, iCol + 5, "float .scalemax = %f", theAxis.scalemax );
- SprintAt( iRow++, iCol + 5, "float .scalefactor = %f", theAxis.scalefactor );
- iRow = ShowTitleType( iRow, iCol + 5, theAxis.scaletitle );
- SprintAt( iRow++, iCol + 5, "float .ticinterval = %f", theAxis.ticinterval );
- SprintAt( iRow++, iCol + 5, "short .ticformat = %d", theAxis.ticformat );
- SprintAt( iRow++, iCol + 5, "short .ticdecimals = %d", theAxis.ticdecimals );
-
- return iRow;
- }
-
- /* ShowFontInfo - Displays data in a variable of type "_fontinfo".
- *
- * Params: iRow - Row at which to start
- * iCol - Column from which to indent
- * theFont - Variable of type "_fontinfo" to display
- *
- * Return: Next available row
- */
- int ShowFontInfo( int iRow, int iCol, struct _fontinfo theFont )
- {
- SprintAt( iRow++, iCol + 5, "int .type = %d", theFont.type );
- SprintAt( iRow++, iCol + 5, "int .ascent = %d", theFont.ascent );
- SprintAt( iRow++, iCol + 5, "int .pixwidth = %d", theFont.pixwidth );
- SprintAt( iRow++, iCol + 5, "int .pixheight = %d", theFont.pixheight );
- SprintAt( iRow++, iCol + 5, "int .avgwidth = %d", theFont.avgwidth );
- SprintAt( iRow++, iCol + 5, "char .filename = %s", theFont.filename );
- SprintAt( iRow++, iCol + 5, "char .facename = %s", theFont.facename );
-
- return iRow;
- }
-
- /* ShowLegendType - Displays data in a variable of type "legendtype".
- *
- * Params: iRow - Row at which to start
- * iCol - Column from which to indent
- * theLegend - Variable of type "legendtype" to display
- *
- * Return: Next available row
- */
- int ShowLegendType( int iRow, int iCol, legendtype theLegend )
- {
- SprintAt( iRow++, iCol + 5, "short .legend = %s",
- (theLegend.legend) ? "TRUE" : "FALSE" );
- SprintAt( iRow++, iCol + 5, "short .place = %d", theLegend.place );
- SprintAt( iRow++, iCol + 5, "short .textcolor = %d", theLegend.textcolor );
- SprintAt( iRow++, iCol + 5, "short .autosize = %d", theLegend.autosize );
- SprintAt( iRow++, iCol + 5, "windowtype legendwindow =" );
- iRow = ShowWindowType( iRow, iCol + 5, theLegend.legendwindow );
-
- return iRow;
- }
-
- /* ShowSampleData - Displays the sample data for the demo.
- *
- * Params: None
- */
- void ShowSampleData()
- {
- int iCat, y, iSeries, iValue;
- char szTmp[80];
-
- /* Display data in table format. */
- _clearscreen( _GCLEARSCREEN );
- PrintAt( 1, 40 - strlen(szTmp) / 2, "Data in Table Format", -1 );
-
- /* Write titles and draw separator line. */
- y = 3;
- for( iCat = 1; iCat <= 12; iCat++ )
- PrintAt( y, iCat * 6, aMonths[iCat - 1], -1 );
-
- memset( szTmp, '-', 69 );
- szTmp[69] = 0;
- PrintAt( ++y, 6, szTmp, -1 );
-
- /* Write data. */
- for( iSeries = 1; iSeries <= 3; iSeries++ )
- {
- PrintAt( y += 2, 4, aSalesTitles[iSeries - 1], -1 );
- y += 2;
- for( iValue = 1; iValue <= 12; iValue++ )
- {
- sprintf( szTmp, "%#3.2f", aSales[iSeries - 1][iValue - 1] );
- PrintAt( y, iValue * 6, (char _far *)szTmp, -1 );
- }
- }
- PrintAt( y += 2, 4, TempTitle, -1 );
- y += 2;
- for( iValue = 1; iValue <= 12; iValue++ )
- {
- sprintf( szTmp, "%#3.1f", aTemperature[iValue - 1] );
- PrintAt( y, iValue * 6, szTmp, -1 );
- }
-
- PrintAt( y += 2, 1, "Press any key to continue . . .", -1 );
- getche();
- }
-
- /* ShowTitleType - Displays data in a variable of type "titletype".
- *
- * Params: iRow - Row at which to start
- * iCol - Column from which to indent
- * theTitle - Variable of type "titletype" to display
- *
- * Return: Next available row
- */
- int ShowTitleType( int iRow, int iCol, titletype theTitle )
- {
- SprintAt( iRow++, iCol + 5, "char .title[%d] = \"%s\"", _PG_TITLELEN,
- theTitle.title );
- SprintAt( iRow++, iCol + 5, "short .titlecolor = %d", theTitle.titlecolor );
- SprintAt( iRow++, iCol + 5, "short .justify = %d", theTitle.justify );
-
- return iRow;
- }
-
- /* ShowWindowType - Displays data in a variable of type "windowtype".
- *
- * Params: iRow - Row at which to start
- * iCol - Column from which to indent
- * theWindow - Variable of type "windowtype" to display
- *
- * Return: Next available row
- */
- int ShowWindowType( int iRow, int iCol, windowtype theWindow )
- {
- SprintAt( iRow++, iCol + 5, "short .x1 = %d", theWindow.x1 );
- SprintAt( iRow++, iCol + 5, "short .y1 = %d", theWindow.y1 );
- SprintAt( iRow++, iCol + 5, "short .x2 = %d", theWindow.x2 );
- SprintAt( iRow++, iCol + 5, "short .y2 = %d", theWindow.y2 );
- SprintAt( iRow++, iCol + 5, "short .border = %d", theWindow.border );
- SprintAt( iRow++, iCol + 5, "short .background = %d", theWindow.background );
- SprintAt( iRow++, iCol + 5, "short .borderstyle = %d", theWindow.borderstyle );
- SprintAt( iRow++, iCol + 5, "short .bordercolor = %d", theWindow.bordercolor );
-
- return iRow;
- }
-
- /* ShowError - Displays error message for one of the chart library
- * errors.
- *
- * Params: iErr - Error number
- */
- void ShowError( int iErr )
- {
- char szTmp[50];
-
- /* Change to text screen. */
- _setvideomode( _DEFAULTMODE );
-
- /* Select the error text. */
- switch( iErr )
- {
- case _PG_NOTINITIALIZED:
- strcpy( szTmp, "Chart Library Not Initialized" );
- break;
- case _PG_BADSCREENMODE:
- strcpy( szTmp, "Invalid Screen Mode" );
- break;
- case _PG_BADCHARTTYPE:
- strcpy( szTmp, "Invalid Chart Type" );
- break;
- case _PG_BADCHARTSTYLE:
- strcpy( szTmp, "Invalid Chart Style" );
- break;
- case _PG_BADLEGENDWINDOW:
- strcpy( szTmp, "Invalid Legend Window" );
- break;
- case _PG_BADDATAWINDOW:
- strcpy( szTmp, "No Room for Data window" );
- break;
- case _PG_BADCHARTWINDOW:
- strcpy( szTmp, "Invalid Chart window coordinates" );
- break;
- case _PG_NOMEMORY:
- strcpy( szTmp, "Not Enough Memory for Data Arrays" );
- break;
- case _PG_BADLOGBASE:
- strcpy( szTmp, "X or Y log base <= 0" );
- break;
- case _PG_BADSCALEFACTOR:
- strcpy( szTmp, "X or Y scale factor = 0" );
- break;
- case _PG_TOOSMALLN:
- strcpy( szTmp, "Too few data values" );
- break;
- case _PG_TOOFEWSERIES:
- strcpy( szTmp, "No data series specified" );
- break;
- default:
- strcpy( szTmp, "Unknown error" );
- }
-
- ErrorMsg( szTmp );
- }
-
- /* ViewChart - Draws the current chart.
- *
- * Params: None
- */
- int ViewChart()
- {
- int cValue, iValue, iSeries, iErr;
-
- /* Make sure some data exists. */
- if( cSeries <= 0 )
- {
- fDefault = TRUE;
- DefaultData( ce.charttype, ce.chartstyle, FALSE );
- }
-
- /* Find the longest series. */
- cValue = 0;
- for( iSeries = 0; iSeries < cSeries; iSeries++ )
- if( acSeries[iSeries] > cValue )
- cValue = acSeries[iSeries];
-
- _setvideomode( si.mode );
-
-
- /* Process depending on the type of chart. */
- switch( ce.charttype )
- {
-
- case _PG_PIECHART:
- case _PG_BARCHART:
- case _PG_COLUMNCHART:
- case _PG_LINECHART:
-
- /* Initialize data and draw pie chart or single-series bar,
- * column, or line chart.
- */
- if( (cSeries == 1) ||( ce.charttype == _PG_PIECHART) )
- {
-
- /* Transfer data into a single-dimension array. */
- for( iValue = 0; iValue < cValue; iValue++ )
- axValue[iValue] = aValue[0][iValue];
-
- /* Draw chart. */
- if( ce.charttype == _PG_PIECHART )
- iErr = _pg_chartpie( &ce, aCat, axValue,
- aExplode, cValue );
- else
- iErr = _pg_chart( &ce, aCat, axValue, cValue );
- }
- /* If multiple-series, then data is OK. Just draw chart. */
- else
- iErr = _pg_chartms( &ce, aCat, (float _far *)aValue,
- cSeries, cValue, cValue, aSeriesName );
- break;
-
- case _PG_SCATTERCHART:
-
- /* Make sure there are enough data sets. */
- if( cSeries == 1 )
- {
- _setvideomode( _DEFAULTMODE );
- si.help = 10;
- ErrorMsg( "Too few value data columns for scatter chart." );
- return 1;
-
- }
- /* If it's a single-series scatter, transfer data to one-
- * dimensional arrays and make chart call.
- */
- else if( cSeries == 2 )
- {
- for( iValue = 0; iValue < cValue; iValue++ )
- {
- axValue[iValue] = aValue[0][iValue];
- ayValue[iValue] = aValue[1][iValue];
- }
- cSeries = 1;
- iErr = _pg_chartscatter( &ce, axValue, ayValue, cValue );
-
- }
- /* If it's a multiple-series scatter, transfer odd columns to
- * X-axis data array and even columns to Y-axis array and make
- * chart call.
- */
- else
- {
-
- for( iSeries = 1; iSeries < cSeries; iSeries += 2 )
- {
- aSeriesName[iSeries / 2] = aSeriesName[iSeries - 1];
- for( iValue = 0; iValue < cValue; iValue++ )
- {
- axValueMS[iSeries / 2][iValue] =
- aValue[iSeries - 1][iValue];
- ayValueMS[iSeries / 2][iValue] =
- aValue[iSeries][iValue];
- }
- }
- cSeries /= 2;
-
- iErr = _pg_chartscatterms( &ce, (float _far *)axValueMS,
- (float _far *)ayValueMS,
- cSeries, cValue, cValue,
- aSeriesName );
- }
- }
-
- if( !fDefault )
- ClearData( FALSE );
-
- /* If error, show it, else wait for keypress with chart on screen. */
- if( iErr )
- {
- ShowError( iErr );
- return iErr;
- }
- else
- return ( getch() == ESCAPE ); /* ESCAPE means stop demo */
- }
-