oldXMenu/InsPane.c

   1 #include "copyright.h"
   2
   3 /* Copyright    Massachusetts Institute of Technology    1985   */
   4 /* Copyright (C) 2001, 2002, 2003, 2004, 2005,
   5                  2006 Free Software Foundation, Inc.  */
   6
   7 /*
   8  * XMenu:       MIT Project Athena, X Window system menu package
   9  *
  10  *      XMenuInsertPane - Inserts a pane into an XMenu object in
  11  *                        a particular position.
  12  *
  13  *      Author:         Tony Della Fera, DEC
  14  *                      20-Nov-85
  15  *
  16  */
  17
  18 #include <config.h>
  19 #include "XMenuInt.h"
  20
  21 int
  22 XMenuInsertPane(menu, p_num, label, active)
  23     register XMenu *menu;       /* Menu object to be modified. */
  24     register int p_num;         /* Pane number of new pane. */
  25     char *label;                /* Selection label. */
  26     int active;                 /* Make selection active? */
  27 {
  28     register XMPane *p_ptr;     /* XMPane pointer. */
  29     register XMPane *pane;      /* Newly created pane. */
  30     register XMSelect *select;  /* Initial selection for the new pane. */
  31
  32     int label_length;           /* Label length in characters. */
  33     int label_width;            /* Label width in pixels. */
  34
  35     /*
  36      * Check for NULL pointers!
  37      */
  38     if (label == NULL) {
  39         _XMErrorCode = XME_ARG_BOUNDS;
  40         return(XM_FAILURE);
  41     }
  42
  43     /*
  44      * Find the pane number one less than the one specified since that
  45      * is the pane after which the insertion will occur.
  46      */
  47     p_ptr = _XMGetPanePtr(menu, (p_num - 1));
  48     if (p_ptr == NULL) return(XM_FAILURE);
  49
  50     /*
  51      * Calloc the XMPane structure and the initial XMSelect.
  52      */
  53     pane = (XMPane *)calloc(1, sizeof(XMPane));
  54     if (pane == NULL) {
  55         _XMErrorCode = XME_CALLOC;
  56         return(XM_FAILURE);
  57     }
  58     select = (XMSelect *)calloc(1, sizeof(XMSelect));
  59     if (select == NULL) {
  60         _XMErrorCode = XME_CALLOC;
  61         return(XM_FAILURE);
  62     }
  63
  64     /*
  65      * Determine label size.
  66      */
  67     label_length = strlen(label);
  68     label_width = XTextWidth(menu->p_fnt_info, label, label_length);
  69
  70     /*
  71      * Set up the initial selection.
  72      * Values not explicitly set are zeroed by calloc.
  73      */
  74     select->next = select;
  75     select->prev = select;
  76     select->type = SL_HEADER;
  77     select->serial = -1;
  78     select->parent_p = pane;
  79
  80     /*
  81      * Fill the XMPane structure.
  82      */
  83     pane->type = PANE;
  84     pane->active = active;
  85     pane->serial = -1;
  86     pane->label = label;
  87     pane->label_width = label_width;
  88     pane->label_length = label_length;
  89     pane->s_list = select;
  90
  91     /*
  92      * Insert the pane after the pane with the pane
  93      * number one less than the desired number for the
  94      * new pane.
  95      */
  96     emacs_insque(pane, p_ptr);
  97
  98     /*
  99      * Update the pane count.
 100      */
 101     menu->p_count++;
 102
 103     /*
 104      * Schedule a recompute.
 105      */
 106     menu->recompute = 1;
 107
 108     /*
 109      * Return the number of the pane just added.
 110      */
 111     _XMErrorCode = XME_NO_ERROR;
 112     return(p_num);
 113 }
 114
 115 /* arch-tag: ab94d53d-f05b-4273-82d3-f1b01eb9dc9e
 116    (do not change this comment) */