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Annotation of 43BSD/contrib/X/XMenu/XMenuInsPane.c, revision 1.1.1.1

1.1       root        1: #include <X/mit-copyright.h>
                      2: 
                      3: /* $Header: XMenuInsPane.c,v 10.9 86/02/01 16:15:04 tony Rel $ */
                      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 int i;            /* Loop counter. */
                     27:     register XMPane *p_ptr;    /* XMPane pointer. */
                     28:     register XMPane *pane;     /* Newly created pane. */
                     29:     register XMSelect *select; /* Initial selection for the new pane. */
                     30:         
                     31:     int label_length;          /* Label lenght in characters. */
                     32:     int label_width;           /* Label width in pixels. */
                     33: 
                     34:     /*
                     35:      * Check for NULL pointers!
                     36:      */
                     37:     if (label == NULL) {
                     38:        _XMErrorCode = XME_ARG_BOUNDS;
                     39:        return(XM_FAILURE);
                     40:     }
                     41: 
                     42:     /*
                     43:      * Find the pane number one less than the one specified since that
                     44:      * is the pane after which the insertion will occur.
                     45:      */
                     46:     p_ptr = _XMGetPanePtr(menu, (p_num - 1));
                     47:     if (p_ptr == NULL) return(XM_FAILURE);
                     48: 
                     49:     /*
                     50:      * Calloc the XMPane structure and the initial XMSelect.
                     51:      */
                     52:     pane = (XMPane *)calloc(1, sizeof(XMPane));
                     53:     if (pane == NULL) {
                     54:        _XMErrorCode = XME_CALLOC;
                     55:        return(XM_FAILURE);
                     56:     }
                     57:     select = (XMSelect *)calloc(1, sizeof(XMSelect));
                     58:     if (select == NULL) {
                     59:        _XMErrorCode = XME_CALLOC;
                     60:        return(XM_FAILURE);
                     61:     }
                     62: 
                     63:     /*
                     64:      * Determine label size.
                     65:      */
                     66:     label_width = XQueryWidth(label, menu->p_fnt_info->id);
                     67:     label_length = strlen(label);
                     68: 
                     69:     /*
                     70:      * Set up the initial selection.
                     71:      * Values not explicitly set are zeroed by calloc.
                     72:      */
                     73:     select->next = select;
                     74:     select->prev = select;
                     75:     select->type = SL_HEADER;
                     76:     select->serial = -1;
                     77:     select->parent_p = pane;
                     78: 
                     79:     /*
                     80:      * Fill the XMPane structure.
                     81:      */
                     82:     pane->type = PANE;
                     83:     pane->active = active;
                     84:     pane->serial = -1;
                     85:     pane->label = label;
                     86:     pane->label_width = label_width;
                     87:     pane->label_length = label_length;
                     88:     pane->s_list = select;
                     89: 
                     90:     /*
                     91:      * Insert the pane after the pane with the pane
                     92:      * number one less than the desired number for the
                     93:      * new pane.
                     94:      */
                     95:     insque(pane, p_ptr);
                     96: 
                     97:     /*
                     98:      * Update the pane count. 
                     99:      */
                    100:     menu->p_count++;
                    101: 
                    102:     /*
                    103:      * Schedule a recompute.
                    104:      */
                    105:     menu->recompute = 1;
                    106: 
                    107:     /*
                    108:      * Return the number of the pane just added.
                    109:      */
                    110:     _XMErrorCode = XME_NO_ERROR;
                    111:     return(p_num);
                    112: }

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