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Annotation of 43BSDTahoe/new/X/XMenu/XMenuInsPane.c, revision 1.1

1.1     ! root        1: #include <X/mit-copyright.h>
        !             2: 
        !             3: /* $Header: XMenuInsPane.c,v 10.9 86/02/12 16:19:21 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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