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C/C++ Source or Header  |  1995-06-22  |  16KB  |  504 lines
  1. /*****************************************************************************
  2. * XAscii                                                      by Ken Kirksey *
  3. *                                                                            *
  4. * XAscii displays a table of ascii characters and their respective values.   *
  5. * The user choses which format the values are displayed in:  either hex,     *
  6. * decimal or octal.                                                          *
  7. *                                                                            *
  8. * BASICALLY THE WAY IT WORKS                                                 *
  9. *        In xascii.h four static arrays of strings are declared, one for      *
  10. *       ascii characters, one for decimal values, one for hex values and one *
  11. *        for octal values.  Each of these are broken up into five separate    *
  12. *        strings, each of which make up a column (label widget) in the xascii *
  13. *        window.  The ascii value columns remain static, they never change.   *
  14. *        The label widgets that hold the values, however, change whenever the *
  15. *        user changes the notational mode (clicks on the dec ,hex, or octal   *
  16. *       button).  What happens when one of these buttons is clicked is that  *
  17. *       an XtVaSetValues is done on the value label widgets to change their  *
  18. *        label resource to display the values in the notation specified by the*
  19. *        button press.                                                        *
  20. *                                                                            *
  21. * Send all kudos, complaints, suggestions, or bug reports to:                *
  22. *        Ken Kirksey  (kkirksey@eng.auburn.edu)                               *
  23. *                                                                            *
  24. * BTW:  I use 4 column tabs for coding, so if your text editor isn't set for *
  25. *         4 column tabs, this program probably looks really funny.             *
  26. *                                                                               *
  27. ******************************************************************************
  28. * Version 1.1                                                       5 Aug 91 *
  29. *                                                                            *
  30. *  Removed the #include <strings.h> as this was a portability no-no.         *
  31. *  Added an Imakefile (courtesy of Dave Elliot) to the release archive.      *   *                                                                               *
  32. ******************************************************************************
  33. * Version 1.2                                                       6 Aug 91 *
  34. *                                                                            *
  35. * Fixed the problem that was causing my use of the valueFont resource to     *
  36. * kill the program.  The bug was pointed out by Dave Brooks.                 *
  37. *                                                                               *
  38. *****************************************************************************/                                                                           
  39.  
  40. #include <stdio.h>
  41. #include <stdlib.h>
  42. #include <X11/Intrinsic.h>
  43. #include <X11/Shell.h>
  44. #include <X11/Xos.h>
  45. #include <X11/StringDefs.h>
  46. #include <X11/Xaw/Command.h>
  47. #include <X11/Xaw/Toggle.h>
  48. #include <X11/Xaw/Label.h>    
  49. #include <X11/Xaw/Form.h>
  50. #include "xascii.h"
  51.  
  52. /*===========================================================================+
  53. | Function Declarations                                                      |
  54. +===========================================================================*/
  55. static void Quit(),                    /* Callbacks                            */
  56.             ToHex(),
  57.             ToDec(),
  58.             ToOct(),
  59.             Done(),
  60.  
  61.             AboutXascii(),            /* Actions                                */
  62.  
  63.             Syntax();                /* Utilitie                                */
  64.  
  65.  
  66. /*===========================================================================+
  67. | Global Variable Declarations                                               |
  68. +===========================================================================*/
  69.  
  70. static XtAppContext appl_context;
  71.  
  72. static XtActionsRec about_box[]= {
  73.         {"about_xascii", AboutXascii},
  74. };
  75.  
  76. static Widget     toplevel,
  77.                 base_win,
  78.                 title_label,
  79.                 quit_button,
  80.                 toggles[3],
  81.                 ascii_list[6],
  82.                 value_list[6],
  83.                 pshell,
  84.                 about_base_win,
  85.                 about_label,
  86.                 done_button;
  87.  
  88. char        **hex_columns,
  89.             **decimal_columns,
  90.             **octal_columns,
  91.             **ascii_columns;
  92.  
  93. /*===========================================================================+
  94. | MAIN                                                                       | +===========================================================================*/
  95. main (argc,argv)
  96.     int     argc; 
  97.     char     ** argv;
  98. {
  99.     int        i, j;
  100.  
  101. /*---------------------------------------------------------------------------+
  102. | Break up the Ascii table and values into separate columns (22 rows, 6 cols)|
  103. | for display.                                                               |
  104. +---------------------------------------------------------------------------*/
  105.     ascii_columns = (char **)XtCalloc (6, sizeof (char *));
  106.     hex_columns = (char **) XtCalloc (6, sizeof (char *));
  107.     decimal_columns = (char **) XtCalloc (6, sizeof (char *));
  108.     octal_columns = (char **) XtCalloc (6, sizeof (char *));
  109.  
  110.     for (i=0; i<6; i++)
  111.     {
  112.         ascii_columns[i] = (char *)  XtCalloc (90, sizeof (char));
  113.         hex_columns[i] = (char *)  XtCalloc (90, sizeof (char));
  114.         decimal_columns[i] = (char *)  XtCalloc (90, sizeof (char));
  115.         octal_columns[i] = (char *)  XtCalloc (90, sizeof (char));
  116.     
  117.         for (j= (i*22); j < ((i+1) * 22); j++)
  118.         {
  119.             strcat (ascii_columns[i], ascii_values[j]);
  120.             strcat (ascii_columns[i], "\n");
  121.  
  122.             strcat (hex_columns[i], hex_values[j]);
  123.             strcat (hex_columns[i], "\n");
  124.  
  125.             strcat (decimal_columns[i], decimal_values[j]);
  126.             strcat (decimal_columns[i], "\n");
  127.  
  128.             strcat (octal_columns[i], octal_values[j]);
  129.             strcat (octal_columns[i], "\n");
  130.         }
  131.     }
  132.  
  133.     /*-----------------------------------------------------------------------+
  134.     | Begin Widget Initialization.                                           |
  135.     +-----------------------------------------------------------------------*/     
  136.     toplevel = XtAppInitialize(
  137.                     &appl_context,
  138.                     "XAscii",
  139.                     options,
  140.                     XtNumber(options),
  141.                     &argc,argv,NULL, NULL,0);
  142.  
  143.     /*-----------------------------------------------------------------------+
  144.     | Check for Invalid command line options                                 |
  145.     +-----------------------------------------------------------------------*/
  146.     if (argc > 1)
  147.         Syntax (argc, argv);
  148.  
  149.     XtVaGetApplicationResources (toplevel,
  150.                     &app_data,
  151.                     resources,
  152.                     XtNumber (resources),
  153.                     NULL);
  154.  
  155.     base_win = XtVaCreateManagedWidget(
  156.                     "base_win", 
  157.                     formWidgetClass, 
  158.                     toplevel,
  159.                     NULL, 0);
  160.  
  161.     /*----------------------------------------------------------------------+
  162.     |  Note the translation that invokes that about box pop up on a button  |
  163.     |  click in this label widget.                                          |
  164.     +----------------------------------------------------------------------*/
  165.     title_label    = XtVaCreateManagedWidget (
  166.                     "title_label",
  167.                     labelWidgetClass,
  168.                     base_win,
  169.                         XtNforeground, app_data.highlight_color,
  170.                         XtNlabel, "X ASCII Chart",
  171.                         XtNwidth, 408,
  172.                         XtNtranslations, XtParseTranslationTable             
  173.                             (defaultTranslations),
  174.                         XtVaTypedArg,
  175.                             XtNbackground,
  176.                             XtRString,
  177.                             white_bg,
  178.                             sizeof (white_bg),
  179.                         XtVaTypedArg,
  180.                             XtNfont,
  181.                             XtRString,
  182.                             title_font,
  183.                             sizeof (title_font),
  184.                     NULL, 0);
  185.  
  186.     /*-----------------------------------------------------------------------+
  187.     |Create the label widgets for chart display. Default value mode is dec.  |
  188.     +-----------------------------------------------------------------------*/
  189.     for (i=0; i<6;  i++)
  190.     {
  191.         value_list[i] = XtVaCreateManagedWidget(
  192.                         "value_list",
  193.                         labelWidgetClass,
  194.                         base_win,
  195.                             XtNforeground, app_data.highlight_color,
  196.                             XtNfont, app_data.value_font,  
  197.                             XtNfromVert, title_label, 
  198.                             XtNlabel, decimal_columns[i],
  199.                             XtNhorizDistance, 10,
  200.                             XtNborderWidth, 0,
  201.                             XtNvertDistance, 10,
  202.                             XtVaTypedArg,
  203.                                 XtNbackground,
  204.                                 XtRString,
  205.                                 white_bg,
  206.                                 sizeof (white_bg),
  207.  
  208.                         NULL);
  209.  
  210.         ascii_list[i] = XtVaCreateManagedWidget(
  211.                         "ascii_list",
  212.                         labelWidgetClass,
  213.                         base_win,
  214.                             XtNfont, app_data.value_font,  
  215.                             XtNfromVert, title_label, 
  216.                             XtNlabel, ascii_columns[i],
  217.                             XtNfromHoriz, value_list[i],
  218.                             XtNborderWidth, 0,
  219.                             XtNvertDistance, 10,
  220.                             XtNhorizDistance, 0,
  221.                             XtVaTypedArg,
  222.                                 XtNbackground,
  223.                                 XtRString,
  224.                                 white_bg,
  225.                                 sizeof (white_bg),
  226.  
  227.                         NULL);
  228.  
  229.     }
  230.         
  231.     for (i=1; i<6; i++)
  232.         XtVaSetValues (value_list[i], XtNfromHoriz, ascii_list[i-1], NULL);                
  233.     /*-----------------------------------------------------------------------+
  234.     | Create the buttons for value mode selection.  Make them a radio group, |
  235.     | so that only one will be selected (highlighted) at a time.             |
  236.     +-----------------------------------------------------------------------*/
  237.     for (i=0; i<3; i++)
  238.     {
  239.         toggles[i] = XtVaCreateManagedWidget (
  240.                     "toggle", 
  241.                     toggleWidgetClass, 
  242.                     base_win,
  243.                         XtNforeground, app_data.highlight_color,
  244.                         XtNborderColor, app_data.highlight_color,
  245.                         XtNfromVert, ascii_list[0],
  246.                         XtNvertDistance, 15,
  247.                         XtNwidth, 95,
  248.                         XtNresize, FALSE,
  249.                         XtNhorizDistance, 30,
  250.                         XtVaTypedArg,
  251.                             XtNbackground,
  252.                             XtRString,
  253.                             white_bg,
  254.                             sizeof (white_bg),
  255.  
  256.                     NULL, 0);
  257.  
  258.         if (i != 0)
  259.             XtVaSetValues(toggles[i], XtNfromHoriz, toggles[i-1], NULL);
  260.  
  261.         XtVaSetValues (toggles[i], XtNradioGroup, toggles[0], NULL);
  262.     }
  263.  
  264.     XtVaSetValues (toggles[0],
  265.                     XtNlabel,    "Hex",
  266.                     XtNhorizDistance, 0,
  267.                     XtNfromHoriz, value_list[0],
  268.                     NULL);
  269.  
  270.     XtVaSetValues (toggles[1],
  271.                     XtNstate, TRUE,
  272.                     XtNlabel, "Decimal", 
  273.                     NULL);
  274.  
  275.     XtVaSetValues (toggles[2],
  276.                     XtNlabel,    "Octal",
  277.                     NULL);
  278.  
  279.     XtAddCallback (toggles[0], XtNcallback, ToHex, NULL); 
  280.     XtAddCallback (toggles[1], XtNcallback, ToDec, NULL);
  281.      XtAddCallback (toggles[2], XtNcallback, ToOct, NULL); 
  282.  
  283.     
  284.     quit_button = XtVaCreateManagedWidget (
  285.                     "quit_button", 
  286.                     commandWidgetClass, 
  287.                     base_win,
  288.                         XtNfromVert, toggles[0],
  289.                         XtNfromHoriz, ascii_list[0],
  290.                         XtNlabel, "Quit",
  291.                         XtNwidth, 100,
  292.                         XtNvertDistance, 15,
  293.                         XtNhorizDistance, 95,
  294.                         XtVaTypedArg,
  295.                             XtNbackground,
  296.                             XtRString,
  297.                             white_bg,
  298.                             sizeof (white_bg),
  299.  
  300.                     NULL, 0);
  301.  
  302.     XtAddCallback (quit_button, XtNcallback, Quit, NULL);
  303.  
  304.     /*-----------------------------------------------------------------------+
  305.     | Create the About Box.  Invoked on click in title label.                |
  306.     +-----------------------------------------------------------------------*/
  307.     pshell = XtVaCreatePopupShell (
  308.                     "pshell",
  309.                     transientShellWidgetClass,
  310.                     toplevel,
  311.                     NULL);
  312.  
  313.     about_base_win = XtVaCreateManagedWidget(
  314.                     "about_base_win",
  315.                     formWidgetClass,
  316.                     pshell,
  317.  
  318.                     NULL);
  319.  
  320.     about_label = XtVaCreateManagedWidget(
  321.                     "about_label",
  322.                     labelWidgetClass,
  323.                     about_base_win,
  324.                         XtVaTypedArg,
  325.                             XtNbackground,
  326.                             XtRString,
  327.                             white_bg,
  328.                             sizeof (white_bg),
  329.                         XtNlabel, about_text,
  330.                         XtNforeground, app_data.highlight_color,
  331.                         XtNborderColor, app_data.highlight_color,
  332.                         XtNborderWidth, 4,
  333.                     NULL);
  334.  
  335.     done_button = XtVaCreateManagedWidget(
  336.                     "done_button",
  337.                     commandWidgetClass,
  338.                     about_base_win,
  339.                         XtVaTypedArg,
  340.                             XtNbackground,
  341.                             XtRString,
  342.                             white_bg,
  343.                             sizeof (white_bg),
  344.                         XtNfromVert, about_label,
  345.                         XtNvertDistance, 10,
  346.                         XtNhorizDistance, 165,
  347.                         XtNlabel, "Slainte!",
  348.                     NULL);
  349.  
  350.     XtAddCallback (done_button, XtNcallback, Done, NULL);
  351.  
  352.     XtAppAddActions (appl_context, about_box, XtNumber(about_box) );
  353.  
  354.      XtRealizeWidget(toplevel);
  355.      XtAppMainLoop(appl_context);
  356. }
  357.  
  358. /*===========================================================================+
  359. | CALLBACK FUNCTIONS                                                          | +===========================================================================*/
  360.  
  361. /*---------------------------------------------------------------------------+
  362. | Quit                                                                       |
  363. |         Quit the application.  Invoked by click on quit button.              |
  364. +---------------------------------------------------------------------------*/     static void Quit (w,ignore1,ignore2)
  365. Widget w; XtPointer ignore1, ignore2;
  366. {   XtDestroyApplicationContext(appl_context);
  367.     exit(0);
  368. }
  369.  
  370. /*---------------------------------------------------------------------------+
  371. | ToHex                                                                      |
  372. |         Changes the ascii character values to Hex notation.                  |
  373. +---------------------------------------------------------------------------*/  
  374. static void ToHex (w,ignore1,ignore2)
  375. Widget w; XtPointer ignore1, ignore2;
  376. { 
  377.   int i;
  378.  
  379.     for (i=0; i<6; i++)
  380.         XtVaSetValues (value_list[i], XtNlabel, hex_columns[i], NULL);
  381.  
  382. }
  383.  
  384.  
  385. /*---------------------------------------------------------------------------+
  386. | ToDec                                                                      |
  387. |         Changes the ascii character values to Decimal notation.              |
  388. +---------------------------------------------------------------------------*/  
  389. static void ToDec (w,ignore1,ignore2)
  390. Widget w; XtPointer ignore1, ignore2;
  391. { 
  392.   int i;
  393.  
  394.     for (i=0; i<6; i++)
  395.         XtVaSetValues (value_list[i], XtNlabel, decimal_columns[i], NULL);
  396.  
  397. }
  398.  
  399.  
  400. /*---------------------------------------------------------------------------+
  401. | ToOct                                                                      |
  402. |         Changest the ascii character values to Octal notation.               |
  403. +---------------------------------------------------------------------------*/  
  404. static void ToOct (w,ignore1,ignore2)
  405. Widget w; XtPointer ignore1, ignore2;
  406. { 
  407.   int i;
  408.  
  409.     for (i=0; i<6; i++)
  410.         XtVaSetValues (value_list[i], XtNlabel, octal_columns[i], NULL);
  411.  
  412. }
  413.  
  414.  
  415. /*---------------------------------------------------------------------------+
  416. | Done                                                                       |
  417. |         Pops down the about box popup shell.                                 |
  418. +---------------------------------------------------------------------------*/  
  419. static void Done (w,ignore1,ignore2)
  420. Widget w; XtPointer ignore1, ignore2;
  421. { 
  422.   int i;
  423.  
  424.     XtPopdown (pshell);
  425. }
  426.  
  427.  
  428. /*===========================================================================+
  429. | ACTION FUNCTIONS                                                               | +===========================================================================*/
  430.  
  431. /*---------------------------------------------------------------------------+
  432. | AboutXascii                                                                |
  433. |             Positions and pops up the about box popup shell.                 |
  434. +---------------------------------------------------------------------------*/  
  435. static void AboutXascii (w, event, nuffin1, nuffin2)
  436. Widget            w;
  437. XButtonEvent    event;
  438. String            *nuffin1;
  439. Cardinal        *nuffin2;
  440. {    
  441.     Position    x, 
  442.                 y;
  443.  
  444.     Dimension    width, 
  445.                 height;
  446.  
  447.     int            i;
  448.  
  449.     XtVaGetValues (toplevel,
  450.             XtNwidth, &width,
  451.             XtNheight, &height,
  452.             NULL);
  453.  
  454.     XtTranslateCoords (toplevel,
  455.             (Position) 0,
  456.             (Position) height/2,
  457.             &x, &y,
  458.             NULL);
  459.  
  460.     XtVaSetValues (pshell,
  461.             XtNx, x,
  462.             XtNy, y,
  463.             NULL);
  464.  
  465.     XtPopup (pshell, XtGrabNonexclusive);
  466. }
  467.  
  468. /*===========================================================================+
  469. | UTILITY FUNCTIONS                                                              | +===========================================================================*/
  470.  
  471. /*---------------------------------------------------------------------------+
  472. | Syntax                                                                     |
  473. |        Parses off bad command line options (i.e. the stuff left over when   |
  474. |         XtVaAppInitialize is through).                                       |
  475. +---------------------------------------------------------------------------*/       static void Syntax (argc, argv)
  476. int     argc;
  477. char    **argv;
  478. {
  479.     int     i,
  480.             err = 0;
  481.  
  482.     for (i=1; i < argc; i++)
  483.     {
  484.         if (!err++)
  485.             fprintf (stderr, "\nxascii: unknown command line option\n");
  486.  
  487.         fprintf (stderr, "option:  %s\n", argv[i]);
  488.     }
  489.  
  490. }
  491.  
  492.         
  493.  
  494.  
  495.  
  496.  
  497.  
  498.  
  499.  
  500.  
  501.  
  502.  
  503.  
  504.