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Annotation of researchv9/X11/src/X.V11R1/lib/oldXMenu/InsPane.c, revision 1.1.1.1

1.1       root        1: #include <X11/copyright.h>
                      2: 
                      3: /* $Header: InsPane.c,v 1.2 87/09/10 20:31:19 chris Exp $ */
                      4: /* Copyright    Massachusetts Institute of Technology    1985  */
                      5: 
                      6: /*
                      7:  * XMenu:      MIT Project Athena, X Window system menu package
                      8:  *
                      9:  *     XMenuInsertPane - Inserts a pane into an XMenu object in
                     10:  *                       a particular position.
                     11:  *
                     12:  *     Author:         Tony Della Fera, DEC
                     13:  *                     20-Nov-85
                     14:  *
                     15:  */
                     16: 
                     17: #include "XMenuInternal.h"
                     18: 
                     19: int
                     20: XMenuInsertPane(menu, p_num, label, active)
                     21:     register XMenu *menu;      /* Menu object to be modified. */
                     22:     register int p_num;                /* Pane number of new pane. */
                     23:     char *label;               /* Selection label. */
                     24:     int active;                        /* Make selection active? */
                     25: {
                     26:     register XMPane *p_ptr;    /* XMPane pointer. */
                     27:     register XMPane *pane;     /* Newly created pane. */
                     28:     register XMSelect *select; /* Initial selection for the new pane. */
                     29:         
                     30:     int label_length;          /* Label lenght in characters. */
                     31:     int label_width;           /* Label width in pixels. */
                     32: 
                     33:     /*
                     34:      * Check for NULL pointers!
                     35:      */
                     36:     if (label == NULL) {
                     37:        _XMErrorCode = XME_ARG_BOUNDS;
                     38:        return(XM_FAILURE);
                     39:     }
                     40: 
                     41:     /*
                     42:      * Find the pane number one less than the one specified since that
                     43:      * is the pane after which the insertion will occur.
                     44:      */
                     45:     p_ptr = _XMGetPanePtr(menu, (p_num - 1));
                     46:     if (p_ptr == NULL) return(XM_FAILURE);
                     47: 
                     48:     /*
                     49:      * Calloc the XMPane structure and the initial XMSelect.
                     50:      */
                     51:     pane = (XMPane *)calloc(1, sizeof(XMPane));
                     52:     if (pane == NULL) {
                     53:        _XMErrorCode = XME_CALLOC;
                     54:        return(XM_FAILURE);
                     55:     }
                     56:     select = (XMSelect *)calloc(1, sizeof(XMSelect));
                     57:     if (select == NULL) {
                     58:        _XMErrorCode = XME_CALLOC;
                     59:        return(XM_FAILURE);
                     60:     }
                     61: 
                     62:     /*
                     63:      * Determine label size.
                     64:      */
                     65:     label_length = strlen(label);
                     66:     label_width = XTextWidth(menu->p_fnt_info, label, label_length);
                     67: 
                     68:     /*
                     69:      * Set up the initial selection.
                     70:      * Values not explicitly set are zeroed by calloc.
                     71:      */
                     72:     select->next = select;
                     73:     select->prev = select;
                     74:     select->type = SL_HEADER;
                     75:     select->serial = -1;
                     76:     select->parent_p = pane;
                     77: 
                     78:     /*
                     79:      * Fill the XMPane structure.
                     80:      */
                     81:     pane->type = PANE;
                     82:     pane->active = active;
                     83:     pane->serial = -1;
                     84:     pane->label = label;
                     85:     pane->label_width = label_width;
                     86:     pane->label_length = label_length;
                     87:     pane->s_list = select;
                     88: 
                     89:     /*
                     90:      * Insert the pane after the pane with the pane
                     91:      * number one less than the desired number for the
                     92:      * new pane.
                     93:      */
                     94:     insque(pane, p_ptr);
                     95: 
                     96:     /*
                     97:      * Update the pane count. 
                     98:      */
                     99:     menu->p_count++;
                    100: 
                    101:     /*
                    102:      * Schedule a recompute.
                    103:      */
                    104:     menu->recompute = 1;
                    105: 
                    106:     /*
                    107:      * Return the number of the pane just added.
                    108:      */
                    109:     _XMErrorCode = XME_NO_ERROR;
                    110:     return(p_num);
                    111: }

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