C/C++ Users Group Library 1996 July/C-C++ Users Group Library July 1996.iso/vol_300/328_02/wmacro.c

C/C++ Source or Header | 1991-03-15 | 4.1 KB | 256 lines

/* wmacro.c
 *
 *    simple module for keyboard definable macros
 *    uses wpipestr_in & wpipestr_out
 */


#include "wsys.h"




/* array of 8-letter (+1for NULL) names and values of macros
 */
static WMACRO_NAMES name = {0};


static char installed = 0;
static char active    = 0;
static char recording = 0;
static char playing   = 0;


static int  (*oldtrap)(int) = NULL;
static int   trap     (int);
static void callwhendone (void);






void wmacro_install (void)
    {
    if ( !installed )
        {
        installed = 1;
        oldtrap   = wkeytrap;
        wkeytrap  = trap;
        }
    return;
    }


static trap ( int  key )
    {
    int n;
    int response;

    char filename[14];

    if ( oldtrap )
        {
        /* chain to any previous traps
         */
        key = (*oldtrap)(key);
        }

    if ( active )
        {
        /* prevent processing keystrokes that were requested
         * from this routine
         */
        return (key);
        }


    active = 1;


    if ( key == ALT_EQ )
        {
        /* request to record a macro
         */
        key = 0;
        if ( recording )
            {
            /* this ALT_EQ has stopped the macro recording
             * wpipestr_out() has seen it and terminated
             */
            recording =0;
            wpromptc ( "MACRO", "MACRO RECORDING TERMINATED",NULL );
            }
        else
            {
            response = wmacro_select ("Pick a macro to define");

            if ( response != ESCAPE )
                {
                n = response - ALT_1;

                response = wprompts ("MACRO",
                    "Enter a name for the macro\n"
                    "Recording begins after ENTER\n"
                    "Recording ends following ALT =\n"
                    "     ", name[n], 9);
                }
            if ( response != ESCAPE )
                {
                strcpy (filename, name[n] );
                strcat (filename, ".mcr"  );

                recording =1;
                wpipefout (  filename, ALT_EQ ) ;
                }

            }
        }
    else
    if ( (!recording)  && (!playing) && key >= ALT_1  && key <= ALT_0 )
        {
        /* request to play a macro
         * NOTE above if statemnt guarantees no nested macro calls.
         */
        n = key - ALT_1;
        key = 0;

        if ( *name[n] != 0 )
            {

            strcpy (filename, name[n] );
            strcat (filename, ".mcr"  );

            if ( 0 == wpipefin ( filename, callwhendone ) )
                {
                playing =1;
                }


            }

        }

    active = 0;


    return (key);    /* trap */
    }


static void callwhendone (void)
    {
    playing = 0;
    return;
    }


    /*-----------------------------------*/



/* wmacro_select
 *
 * screen layout is 46x12, 2 columns each: "ALT_n NAMETEXT   "
 * with ESCAPE in bottom center.
 *
 */
static char btxt[10][6] =
    {"ALT_1","ALT_2","ALT_3","ALT_4","ALT_5",
     "ALT_6","ALT_7","ALT_8","ALT_9","ALT_0"};
#define BTN_LEN 6

int    wmacro_select (char * msg)
    {
    int     key, n, x, y;

    wopen (21,4, 43,13, wmenuattr, SINGLE_BORDER, wmenuattr, WSAVE2RAM);
    wtitle ("\xb4 MACROS \xc3");

    wgoto ( 3,1 );
    wputs (msg);


    for ( n=0, x=3, y=4;     n<10;     n++, y++ )
        {
        wbutton_add ( btxt[n], x, y, BTN_LEN, (ALT_1 + n), 0 );
        wgoto ( x+6, y );
        wputs ( name [n] );


        if ( n == 4 )
            {
            /* second column
             */
            x = 21;
            y = 3;
            }
        }


    wbutton_add ( "ESCAPE", 20, 11, 7, ESCAPE, WBTN_BOX );

    do    {
        key = wgetc();

        /* convert char numbers to ALT_nmubers
         */
        if ( key == '0' )
            {
            key = ALT_0;
            }
        else
        if ( key >= '1' && key <= '9' )
            {
            key += ( ALT_1 - '1' );
            }

        }
    while ( ! ( key == ESCAPE || ( key >= ALT_1 && key <= ALT_0 ) ) );

    wclose ();

    return (key);   /* wmacro_select */
    }


#ifdef __TURBOC__
    /* TurboC wants the declarations of the function and of the array to
     * match exactly, which is 'strong type checking'
     */
WMACRO_NAMES *(wmacro_names) (void)
    {
    return (&name);
    }
#else
    /* Microsoft C can't seem to handle an & in front of the array name.
     */
WMACRO_NAMES *(wmacro_names) (void)
    {
    return (name);
    }
#endif    /* Microsoft C version */



void wmacro_assign (char *filename, int key)
    {
    int n;

    if ( key < ALT_1  || key > ALT_0 )
        {
        werror ('W', "MACRO assign bad key");
        }

    n =  (key == ALT_0) ? 9 : key - ALT_1;


    memcpy ( name[n], filename, 8 );
    name[n][8] = 0;


    return;    /* wmacro_assign */
    }

/*-------------------- end of WMACRO.C --------------------- */