| 1 | /* Copyright Massachusetts Institute of Technology 1985 */ |
| 2 | |
| 3 | #include "copyright.h" |
| 4 | |
| 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 "XMenuInt.h" |
| 18 | |
| 19 | int |
| 20 | XMenuInsertPane(register XMenu *menu, register int p_num, char *label, int active) |
| 21 | /* Menu object to be modified. */ |
| 22 | /* Pane number of new pane. */ |
| 23 | /* Selection label. */ |
| 24 | /* Make selection active? */ |
| 25 | { |
| 26 | register XMPane *p_ptr; /* XMPane pointer. */ |
| 27 | register XMPane *pane; /* Newly created pane. */ |
| 28 | register XMSelect *sel; /* Initial selection for the new pane. */ |
| 29 | |
| 30 | int label_length; /* Label length 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 | sel = (XMSelect *)calloc(1, sizeof(XMSelect)); |
| 57 | if (sel == 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 | sel->next = sel; |
| 73 | sel->prev = sel; |
| 74 | sel->type = SL_HEADER; |
| 75 | sel->serial = -1; |
| 76 | sel->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 = sel; |
| 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 | emacs_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 | } |