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

1.1       root        1: #include <X/mit-copyright.h>
                      2: 
                      3: /* $Header: XMenuInternal.c,v 10.17 86/02/01 16:15:10 tony Rel $ */
                      4: /* Copyright    Massachusetts Institute of Technology    1985  */
                      5: 
                      6: /*
                      7:  * XMenu:      MIT Project Athena, X Window system menu package
                      8:  *
                      9:  *     XMenuInternal.c - XMenu internal (not user visable) routines.
                     10:  *
                     11:  *     Author:         Tony Della Fera, DEC
                     12:  *                     November, 1985
                     13:  *
                     14:  */
                     15: 
                     16: #include "XMenuInternal.h"
                     17: 
                     18: /*
                     19:  * Toggle color macro.
                     20:  */
                     21: #define toggle_color(x) \
                     22:        ((x) == menu->bkgnd_color ? menu->s_frg_color : menu->bkgnd_color)
                     23: 
                     24: /*
                     25:  * Internal Window creation queue sizes.
                     26:  */
                     27: #define S_QUE_SIZE     300
                     28: #define P_QUE_SIZE     20
                     29: #define BUFFER_SIZE    (S_QUE_SIZE >= P_QUE_SIZE ? S_QUE_SIZE : P_QUE_SIZE)
                     30: 
                     31: 
                     32: /*
                     33:  * XMWinQue - Internal window creation queue datatype.
                     34:  */
                     35: typedef struct _xm_win_que_def {
                     36:     int sq_size;
                     37:     XMSelect *sq[S_QUE_SIZE];
                     38:     XMSelect **sq_ptr;
                     39:     int pq_size;
                     40:     XMPane *pq[P_QUE_SIZE];
                     41:     XMPane **pq_ptr;
                     42: } XMWinQue;
                     43: 
                     44: /*
                     45:  * _XMWinQue - Internal static window creation queue.
                     46:  */
                     47: static XMWinQue _XMWinQue;
                     48: 
                     49: /*
                     50:  * _XMErrorCode - Global XMenu error code.
                     51:  */
                     52: int _XMErrorCode = XME_NO_ERROR;
                     53: 
                     54: /*
                     55:  * _XMErrorList - Global XMenu error code discription strings.
                     56:  */
                     57: char *
                     58: _XMErrorList[XME_CODE_COUNT] = {
                     59:     "No error",                                /* XME_NO_ERROR */
                     60:     "Menu not initialized",            /* XME_NOT_INIT */
                     61:     "Argument out of bounds",          /* XME_ARG_BOUNDS */
                     62:     "Pane not found",                  /* XME_P_NOT_FOUND */
                     63:     "Selection not found",             /* XME_S_NOT_FOUND */
                     64:     "Invalid menu style parameter",    /* XME_STYLE_PARAM */
                     65:     "Unable to grab mouse",            /* XME_GRAB_MOUSE */
                     66:     "Unable to interpret locator",     /* XME_INTERP_LOC */
                     67:     "Unable to calloc memory",         /* XME_CALLOC */
                     68:     "Unable to create XAssocTable",    /* XME_CREATE_ASSOC */
                     69:     "Unable to store bitmap",          /* XME_STORE_BITMAP */
                     70:     "Unable to make tile pixmaps",     /* XME_MAKE_TILES */
                     71:     "Unable to make pixmap",           /* XME_MAKE_PIXMAP */
                     72:     "Unable to create cursor",         /* XME_CREATE_CURSOR */
                     73:     "Unable to open font",             /* XME_OPEN_FONT */
                     74:     "Unable to create windows",                /* XME_CREATE_WINDOW */
                     75:     "Unable to create transparencies", /* XME_CREATE_TRANSP */
                     76: };
                     77: 
                     78: /*
                     79:  * _XMEventHandler - Internal event handler variable.
                     80:  */
                     81: int (*_XMEventHandler)() = NULL;
                     82: 
                     83: 
                     84: 
                     85: /*
                     86:  * _XMWinQueInit - Internal routine to initialize the window
                     87:  *                queue.
                     88:  */
                     89: _XMWinQueInit()
                     90: {
                     91:     /*
                     92:      * Blank the queue structure.
                     93:      */
                     94:     bzero(&_XMWinQue, sizeof(XMWinQue));
                     95: 
                     96:     /*
                     97:      * Initialize the next free location pointers.
                     98:      */
                     99:     _XMWinQue.sq_ptr = _XMWinQue.sq;
                    100:     _XMWinQue.pq_ptr = _XMWinQue.pq;
                    101: }
                    102: 
                    103: 
                    104: 
                    105: /*
                    106:  * _XMWinQueAddPane - Internal routine to add a pane to the pane
                    107:  *                   window queue.
                    108:  */
                    109: int
                    110: _XMWinQueAddPane(menu, p_ptr)
                    111:     register XMenu *menu;      /* Menu being manipulated. */
                    112:     register XMPane *p_ptr;    /* XMPane being queued. */
                    113: {
                    114:     /*
                    115:      * If the queue is currently full then flush it.
                    116:      */
                    117:     if (_XMWinQue.pq_size == P_QUE_SIZE) {
                    118:        if (_XMWinQueFlush(menu) == _FAILURE) return(_FAILURE);
                    119:     }
                    120: 
                    121:     /*
                    122:      * Insert the new XMPane pointer and increment the queue pointer
                    123:      * and the queue size.
                    124:      */
                    125:     *_XMWinQue.pq_ptr = p_ptr;
                    126:     _XMWinQue.pq_ptr++;
                    127:     _XMWinQue.pq_size++;
                    128: 
                    129:     /*
                    130:      * All went well, return successfully.
                    131:      */
                    132:     _XMErrorCode = XME_NO_ERROR;
                    133:     return(_SUCCESS);
                    134: }
                    135: 
                    136: 
                    137: 
                    138: /*
                    139:  * _XMWinQueAddSelection - Internal routine to add a selection to
                    140:  *                        the selection window queue.
                    141:  */
                    142: int
                    143: _XMWinQueAddSelection(menu, s_ptr)
                    144:     register XMenu *menu;      /* Menu being manipulated. */
                    145:     register XMSelect *s_ptr;  /* XMSelection being queued. */
                    146: {
                    147:     /*
                    148:      * If this entry will overflow the queue then flush it.
                    149:      */
                    150:     if (_XMWinQue.sq_size == S_QUE_SIZE) {
                    151:        if (_XMWinQueFlush(menu) == _FAILURE) return(_FAILURE);
                    152:     }
                    153: 
                    154:     /*
                    155:      * Insert the new XMSelect pointer and increment the queue pointer
                    156:      * and the queue size.
                    157:      */
                    158:     *_XMWinQue.sq_ptr = s_ptr;
                    159:     _XMWinQue.sq_ptr++;
                    160:     _XMWinQue.sq_size++;
                    161: 
                    162:     /*
                    163:      * All went well, return successfully.
                    164:      */
                    165:     _XMErrorCode = XME_NO_ERROR;
                    166:     return(_SUCCESS);
                    167: }
                    168: 
                    169: 
                    170: 
                    171: /*
                    172:  * _XMWinQueFlush - Internal routine to flush the pane and
                    173:  *                 selection window queues.
                    174:  */
                    175: int
                    176: _XMWinQueFlush(menu)
                    177:     register XMenu *menu;      /* Menu being manipulated. */
                    178: {
                    179:     register int pq_index;     /* Pane queue index. */
                    180:     register int sq_index;     /* Selection queue index. */
                    181:     register XMPane *p_ptr;    /* XMPane pointer. */
                    182:     register XMSelect *s_ptr;   /* XMSelect pointer. */
                    183: 
                    184:     int win_count;                     /* Count of created windows. */
                    185:     Window window;                     /* Window id temporary variable. */
                    186:     BatchFrame batch_buf[BUFFER_SIZE]; /* Window batch creation buffer. */
                    187: 
                    188:     /*
                    189:      * If the pane window queue is not empty...
                    190:      */
                    191:     if (_XMWinQue.pq_size > 0) {
                    192:        /*
                    193:         * Pack the window batch buffer.
                    194:         */
                    195:        for (pq_index = 0; pq_index < _XMWinQue.pq_size; pq_index++) {
                    196:            /*
                    197:             * Retrieve the an XMPane pointer.
                    198:             */
                    199:            p_ptr = _XMWinQue.pq[pq_index];
                    200:            
                    201:            /*
                    202:             * Pack the next buffer location with the data
                    203:             * associated with the XMPane. 
                    204:             */
                    205:            batch_buf[pq_index].type = IsOpaque;
                    206:            batch_buf[pq_index].parent = menu->parent;
                    207:            batch_buf[pq_index].x = p_ptr->window_x;
                    208:            batch_buf[pq_index].y = p_ptr->window_y;
                    209:            batch_buf[pq_index].width = p_ptr->window_w;
                    210:            batch_buf[pq_index].height = p_ptr->window_h;
                    211:            batch_buf[pq_index].bdrwidth = menu->p_bdr_width;
                    212:            batch_buf[pq_index].border = menu->p_bdr_pixmap;
                    213:            batch_buf[pq_index].background = menu->inact_pixmap;
                    214:        }
                    215: 
                    216:        /*
                    217:         * Transmit the pane window buffer.
                    218:         */
                    219:        win_count = XCreateWindowBatch(batch_buf, _XMWinQue.pq_size);
                    220:        if (win_count != _XMWinQue.pq_size) {
                    221:            _XMErrorCode = XME_CREATE_WINDOW;
                    222:            return(_FAILURE);
                    223:        }
                    224: 
                    225:        /*
                    226:         * Retrieve the resulting window id's.
                    227:         */
                    228:        for (pq_index = 0; pq_index < _XMWinQue.pq_size; pq_index++) {
                    229:            window = batch_buf[pq_index].self;
                    230:            /*
                    231:             * Store the window id with its XMPane structure.
                    232:             */
                    233:            p_ptr = _XMWinQue.pq[pq_index];
                    234:            p_ptr->window = window;
                    235:            /*
                    236:             * Insert the new window id and its
                    237:             * associated XMPane structure into the 
                    238:             * assoction table.
                    239:             */
                    240:            XMakeAssoc(menu->assoc_tab, window, p_ptr);
                    241:            /*
                    242:             * Select input events on the new window.
                    243:             */
                    244:            XSelectInput(window, menu->p_events);
                    245:        }
                    246: 
                    247:        /*
                    248:         * Reset the pane queue pointer and size.
                    249:         */
                    250:        _XMWinQue.pq_size = 0;
                    251:        _XMWinQue.pq_ptr = _XMWinQue.pq;
                    252:     }
                    253: 
                    254:     /*
                    255:      * If the selection window queue is not empty...
                    256:      */
                    257:     if (_XMWinQue.sq_size > 0) {
                    258:        /*
                    259:         * Pack the selection transparency buffer. 
                    260:         */
                    261:        for (sq_index = 0; sq_index < _XMWinQue.sq_size; sq_index++) {
                    262:            /*
                    263:             * Retrieve the an XMSelect pointer.
                    264:             */
                    265:            s_ptr = _XMWinQue.sq[sq_index];
                    266:            
                    267:            /*
                    268:             * Pack the next buffer location with the data
                    269:             * associated with the XMPane. 
                    270:             */
                    271:            batch_buf[sq_index].type = IsTransparent;
                    272:            batch_buf[sq_index].parent = s_ptr->parent_p->window;
                    273:            batch_buf[sq_index].x = s_ptr->window_x;
                    274:            batch_buf[sq_index].y = s_ptr->window_y;
                    275:            batch_buf[sq_index].width = s_ptr->window_w;
                    276:            batch_buf[sq_index].height = s_ptr->window_h;
                    277:        }
                    278:     
                    279:        /*
                    280:         * Transmit the selection transparency buffer.
                    281:         */
                    282:        win_count = XCreateWindowBatch(batch_buf, _XMWinQue.sq_size);
                    283:        if (win_count != _XMWinQue.sq_size) {
                    284:            _XMErrorCode = XME_CREATE_TRANSP;
                    285:            return(_FAILURE);
                    286:        }
                    287:     
                    288:        /*
                    289:         * Retrieve the resulting window id's.
                    290:         */
                    291:        for (sq_index = 0; sq_index < _XMWinQue.sq_size; sq_index++) {
                    292:            window = batch_buf[sq_index].self;
                    293:            /*
                    294:             * Store the window id with its XMSelect structure.
                    295:             */
                    296:            s_ptr = _XMWinQue.sq[sq_index];
                    297:            s_ptr->window = window;
                    298:            /*
                    299:             * Insert the new window id and its
                    300:             * associated XMSelect structure into the 
                    301:             * assoction table.
                    302:             */
                    303:            XMakeAssoc(menu->assoc_tab, window, s_ptr);
                    304:            /*
                    305:             * Select input events on the new window.
                    306:             */
                    307:            XSelectInput(window, menu->s_events);
                    308:        }
                    309: 
                    310:        /*
                    311:         * Reset the selection queue pointer and size.
                    312:         */
                    313:        _XMWinQue.sq_size = 0;
                    314:        _XMWinQue.sq_ptr = _XMWinQue.sq;
                    315:     }
                    316: 
                    317:     /*
                    318:      * Flush X's internal queues.
                    319:      */
                    320:     XFlush();
                    321: 
                    322:     /*
                    323:      * All went well, return successfully.
                    324:      */
                    325:     _XMErrorCode = XME_NO_ERROR;
                    326:     return(_SUCCESS);
                    327: }
                    328: 
                    329: 
                    330: 
                    331: /*
                    332:  * _XMGetPanePtr -     Given a menu pointer and a pane index number, return
                    333:  *                     a pane pointer that points to the indexed pane.
                    334:  */
                    335: XMPane *
                    336: _XMGetPanePtr(menu, p_num)
                    337:     register XMenu *menu;      /* Menu to find the pane in. */
                    338:     register int p_num;                /* Index number of pane to find. */
                    339: {
                    340:     register XMPane *p_ptr;    /* Pane pointer to be returned. */
                    341:     register int i;            /* Loop counter. */
                    342: 
                    343:     /*
                    344:      * Is the pane number out of range?
                    345:      */
                    346:     if ((p_num < 0) || (p_num > (menu->p_count - 1))) {
                    347:        _XMErrorCode = XME_P_NOT_FOUND;
                    348:        return(NULL);
                    349:     }
                    350: 
                    351:     /*
                    352:      * Find the right pane.
                    353:      */
                    354:     p_ptr = menu->p_list->next;
                    355:     for (i = 0; i < p_num; i++) p_ptr = p_ptr->next;
                    356: 
                    357:     /*
                    358:      * Return successfully.
                    359:      */
                    360:     _XMErrorCode = XME_NO_ERROR;
                    361:     return(p_ptr);
                    362: }
                    363: 
                    364: 
                    365: 
                    366: /*
                    367:  * _XMGetSelectionPtr -        Given pane pointer and a selection index number,
                    368:  *                     return a selection pointer that points to the
                    369:  *                     indexed selection.
                    370:  */
                    371: XMSelect *
                    372: _XMGetSelectionPtr(p_ptr, s_num)
                    373:     register XMPane *p_ptr;    /* Pane to find the selection in. */
                    374:     register int s_num;                /* Index number of the selection to find. */
                    375: {
                    376:     register XMSelect *s_ptr;  /* Selection pointer to be returned. */
                    377:     register int i;            /* Loop counter. *./
                    378:     
                    379:     /*
                    380:      * Is the selection number out of range?
                    381:      */
                    382:     if ((s_num < 0) || (s_num > (p_ptr->s_count - 1))) {
                    383:        _XMErrorCode = XME_S_NOT_FOUND;
                    384:        return(NULL);
                    385:     }
                    386: 
                    387:     /*
                    388:      * Find the right selection.
                    389:      */
                    390:     s_ptr = p_ptr->s_list->next;
                    391:     for (i = 0; i < s_num; i++) s_ptr = s_ptr->next;
                    392: 
                    393:     /*
                    394:      * Return successfully.
                    395:      */
                    396:     _XMErrorCode = XME_NO_ERROR;
                    397:     return(s_ptr);
                    398: }
                    399: 
                    400: 
                    401: 
                    402: /*
                    403:  * _XMRecomputeGlobals - Internal subroutine to recompute menu wide
                    404:  *                      global values.
                    405:  */
                    406: _XMRecomputeGlobals(menu)
                    407:     register XMenu *menu;      /* Menu object to compute from. */
                    408: {
                    409:     register XMPane *p_ptr;    /* Pane pointer. */
                    410:     register XMSelect *s_ptr;  /* Selection pointer. */
                    411: 
                    412:     register int max_p_label = 0;      /* Maximum pane label width. */
                    413:     register int max_s_label = 0;      /* Maximum selection label width. */
                    414:     register int s_count = 0;          /* Maximum selection count. */
                    415: 
                    416:     int p_s_pad;               /* Pane <-> selection padding. */
                    417:     int p_s_diff;              /* Pane <-> selection seperation. */
                    418: 
                    419:     int p_height;              /* Pane window height. */
                    420:     int p_width;               /* Pane window width. */
                    421:     int s_width;               /* Selection window width. */
                    422: 
                    423:     int seperation;            /* Pane window, selection window seperation. */
                    424: 
                    425:     /*
                    426:      * For each pane...
                    427:      */
                    428:     for (
                    429:        p_ptr = menu->p_list->next;
                    430:        p_ptr != menu->p_list;
                    431:        p_ptr = p_ptr->next
                    432:     ){
                    433:        /*
                    434:         * Recompute maximum pane label width.
                    435:         */
                    436:        max_p_label = max(max_p_label, p_ptr->label_width);
                    437: 
                    438:        /*
                    439:         * Recompute maximum selection count. 
                    440:         */
                    441:        s_count = max(s_count, p_ptr->s_count);
                    442: 
                    443:        /*
                    444:         * For each selection in the current pane...
                    445:         */
                    446:        for (
                    447:            s_ptr = p_ptr->s_list->next;
                    448:            s_ptr != p_ptr->s_list;
                    449:            s_ptr = s_ptr->next
                    450:        ){
                    451:            /*
                    452:             * Recompute maximum selection label width.
                    453:             */
                    454:            max_s_label = max(max_s_label, s_ptr->label_width);
                    455:        }
                    456:     }
                    457: 
                    458:     /*
                    459:      * Recompute pane height.
                    460:      */
                    461:     p_height = (menu->flag_height << 1) + (menu->s_y_off * s_count);
                    462: 
                    463:     /*
                    464:      * Recompute horizontal padding between the pane window and the
                    465:      * selection windows.
                    466:      */
                    467:     p_s_pad = menu->p_x_off << 1;
                    468: 
                    469:     /*
                    470:      * Recompute pane and selection window widths.
                    471:      * This is done by first computing the window sizes from the maximum
                    472:      * label widths.  If the spacing between the selection window and the
                    473:      * containing pane window is less than the pane selection padding value
                    474:      * (twice the pane X offset) then change the size of the pane to be
                    475:      * the size of the selection window plus the padding.  If, however the
                    476:      * spacing between the selection window and the containing pane window
                    477:      * is more than the pane selection padding value increase the size of
                    478:      * the selection to its maximum possible value (the pane width minus
                    479:      * the pane selection padding value).
                    480:      */
                    481:     p_width = max_p_label + p_s_pad;
                    482:     s_width = max_s_label + (menu->s_fnt_pad << 1) + (menu->s_bdr_width << 1);
                    483:     p_s_diff = p_width - s_width;
                    484:     if (p_s_diff < p_s_pad) {
                    485:        p_width = s_width + p_s_pad;
                    486:     }
                    487:     else if (p_s_diff > p_s_pad) {
                    488:        s_width = p_width - p_s_pad;
                    489:     }
                    490: 
                    491:     /*
                    492:      * Reset menu wide global values.
                    493:      */
                    494:     menu->s_count = s_count;
                    495:     menu->p_height = p_height;
                    496:     menu->p_width = p_width;
                    497:     menu->s_width = s_width;
                    498: }
                    499: 
                    500: 
                    501: 
                    502: /*
                    503:  * _XMRecomputePane - Internal subroutine to recompute pane
                    504:  *                   window dependencies.
                    505:  */
                    506: int
                    507: _XMRecomputePane(menu, p_ptr, p_num)
                    508:     register XMenu *menu;      /* Menu object being recomputed. */
                    509:     register XMPane *p_ptr;    /* Pane pointer. */
                    510:     register int p_num;                /* Pane sequence number. */
                    511: {
                    512:     register int window_x;     /* Recomputed window X coordinate. */
                    513:     register int window_y;     /* Recomputed window Y coordinate. */
                    514: 
                    515:     register Bool config_p = FALSE;    /* Reconfigure pane window? */
                    516: 
                    517:     /*
                    518:      * Update the pane serial number.
                    519:      */
                    520:     p_ptr->serial = p_num;
                    521: 
                    522:     /*
                    523:      * Recompute window X and Y coordinates.
                    524:      */
                    525:     switch (menu->menu_style) {
                    526:        case LEFT:
                    527:            window_x = menu->p_x_off * ((menu->p_count - 1) - p_num);
                    528:            window_y = menu->p_y_off * ((menu->p_count - 1) - p_num);
                    529:            break;
                    530:        case RIGHT:
                    531:            window_x = menu->p_x_off * p_num;
                    532:            window_y = menu->p_y_off * ((menu->p_count - 1) - p_num);
                    533:            break;
                    534:        case CENTER:
                    535:            window_x = 0;
                    536:            window_y = menu->p_y_off * ((menu->p_count - 1) - p_num);
                    537:            break;
                    538:        default:
                    539:            /* Error! Invalid style parameter. */
                    540:            _XMErrorCode = XME_STYLE_PARAM;
                    541:            return(_FAILURE);
                    542:     }
                    543: 
                    544:     /*
                    545:      * If the newly compute pane coordinates differ from the 
                    546:      * current coordinates, reset the current coordinates and
                    547:      * reconfigure the pane.
                    548:      */
                    549:     if (
                    550:        (window_x != p_ptr->window_x) ||
                    551:        (window_y != p_ptr->window_y)
                    552:     ){
                    553:        /*
                    554:         * Reset the coordinates and schedule
                    555:         * the pane for reconfiguration.
                    556:         */
                    557:        p_ptr->window_x = window_x;
                    558:        p_ptr->window_y = window_y;
                    559:        config_p = TRUE;
                    560:     }
                    561: 
                    562:     /*
                    563:      * If the local pane width and height differs from the
                    564:      * menu pane width and height, reset the local values.
                    565:      */
                    566:     if (
                    567:        (p_ptr->window_w != menu->p_width) ||
                    568:        (p_ptr->window_h != menu->p_height)
                    569:     ){
                    570:        /*
                    571:         * Reset window width and height and schedule
                    572:         * the pane for reconfiguration.
                    573:         */
                    574:        p_ptr->window_w = menu->p_width;
                    575:        p_ptr->window_h = menu->p_height;
                    576:        config_p = TRUE;
                    577:     }
                    578: 
                    579:     /*
                    580:      * If we need to reconfigure the pane window do it now.
                    581:      */
                    582:     if (config_p == TRUE) {
                    583:        /*
                    584:         * If the pane window has already been created then
                    585:         * reconfigure the existing window, otherwise queue
                    586:         * it for creation with the new configuration.
                    587:         */
                    588:        if (p_ptr->window) {
                    589:            XConfigureWindow(
                    590:                p_ptr->window,
                    591:                p_ptr->window_x, p_ptr->window_y,
                    592:                p_ptr->window_w, p_ptr->window_h
                    593:            );
                    594:        }
                    595:        else {
                    596:            if (_XMWinQueAddPane(menu, p_ptr) == _FAILURE) {
                    597:                return(_FAILURE);
                    598:            }
                    599:        }
                    600:     }
                    601:  
                    602:     /*
                    603:      * Recompute label X position.
                    604:      */
                    605:     switch (menu->p_style) {
                    606:        case LEFT:
                    607:            p_ptr->label_x = menu->p_x_off + menu->p_fnt_pad;
                    608:            break;
                    609:        case RIGHT:
                    610:            p_ptr->label_x = menu->p_width -
                    611:                (p_ptr->label_width + menu->p_x_off + menu->p_fnt_pad);
                    612:            break;
                    613:        case CENTER:
                    614:            p_ptr->label_x = (menu->p_width - p_ptr->label_width) >> 1;
                    615:            break;
                    616:        default:
                    617:            /* Error! Invalid style parameter. */
                    618:            _XMErrorCode = XME_STYLE_PARAM;
                    619:            return(_FAILURE);
                    620:     }
                    621:     /*
                    622:      * Recompute label Y positions.
                    623:      */
                    624:     p_ptr->label_uy = menu->p_fnt_pad;
                    625:     p_ptr->label_ly = (menu->p_height - menu->flag_height) + menu->p_fnt_pad;
                    626: 
                    627:     /*
                    628:      * All went well, return successfully.
                    629:      */
                    630:     _XMErrorCode = XME_NO_ERROR;
                    631:     return(_SUCCESS);
                    632: }
                    633: 
                    634: 
                    635: 
                    636: /*
                    637:  * _XMRecomputeSelection - Internal subroutine to recompute
                    638:  *                        selection window dependencies.
                    639:  */
                    640: int
                    641: _XMRecomputeSelection(menu, s_ptr, s_num)
                    642:     register XMenu *menu;      /* Menu object being recomputed. */
                    643:     register XMSelect *s_ptr;  /* Selection pointer. */
                    644:     register int s_num;                /* Selection sequence number. */
                    645: {
                    646:     register Bool config_s = FALSE;    /* Reconfigure selection window? */
                    647: 
                    648:     /*
                    649:      * If the selection serial numbers are out of order, begin
                    650:      * resequencing selections.  Recompute selection window coordinates
                    651:      * and serial number.
                    652:      *
                    653:      * When selections are created they are given a serial number of
                    654:      * -1, this causes this routine to give a new selection
                    655:      * its initial coordinates and serial number.
                    656:      */
                    657:     if (s_ptr->serial != s_num) {
                    658:        /*
                    659:         * Fix the sequence number.
                    660:         */
                    661:        s_ptr->serial = s_num;
                    662:        /*
                    663:         * Recompute window X and Y coordinates.
                    664:         */
                    665:        s_ptr->window_x = menu->s_x_off;
                    666:        s_ptr->window_y = menu->flag_height + (menu->s_y_off * s_num);
                    667:        /*
                    668:         * We must reconfigure the window.
                    669:         */
                    670:        config_s = TRUE;
                    671:     }
                    672: 
                    673:     /*
                    674:      * If the local selection width and height differs from the
                    675:      * menu selection width and height, reset the local values.
                    676:      */
                    677:     if (
                    678:        (s_ptr->window_w != menu->s_width) ||
                    679:        (s_ptr->window_h != menu->s_height)
                    680:     ){
                    681:        /*
                    682:         * We must reconfigure the window.
                    683:         */
                    684:        config_s = TRUE;
                    685:        /*
                    686:         * Reset window width and height.
                    687:         */
                    688:        s_ptr->window_w = menu->s_width;
                    689:        s_ptr->window_h = menu->s_height;
                    690:     }
                    691: 
                    692:     /*
                    693:      * If we need to reconfigure the selection window do it now.
                    694:      */
                    695:     if (config_s == TRUE) {
                    696:        /*
                    697:         * If the selection window has already been created then
                    698:         * reconfigure the existing window, otherwise queue it
                    699:         * for creation with the new configuration.
                    700:         */
                    701:        if (s_ptr->window) {
                    702:            XConfigureWindow(
                    703:                s_ptr->window,
                    704:                s_ptr->window_x, s_ptr->window_y,
                    705:                s_ptr->window_w, s_ptr->window_h
                    706:            );
                    707:        }
                    708:        else {
                    709:            if (_XMWinQueAddSelection(menu, s_ptr) == _FAILURE) {
                    710:                return(_FAILURE);
                    711:            }
                    712:        }
                    713:     }
                    714: 
                    715:     /*
                    716:      * Recompute label X position.
                    717:      */
                    718:     switch (menu->s_style) {
                    719:        case LEFT:
                    720:            s_ptr->label_x = menu->s_bdr_width + menu->s_fnt_pad;
                    721:            break;
                    722:        case RIGHT:
                    723:            s_ptr->label_x = menu->s_width -
                    724:                (s_ptr->label_width + menu->s_bdr_width + menu->s_fnt_pad);
                    725:            break;
                    726:        case CENTER:
                    727:            s_ptr->label_x = (menu->s_width - s_ptr->label_width) >> 1;
                    728:            break;
                    729:        default:
                    730:            /* Error! Invaild style parameter. */
                    731:            _XMErrorCode = XME_STYLE_PARAM;
                    732:            return(_FAILURE);
                    733:     }
                    734:     /*
                    735:      * Recompute label Y position.
                    736:      */
                    737:     s_ptr->label_y = menu->s_fnt_pad + menu->s_bdr_width;
                    738: 
                    739:     /*
                    740:      * All went well, return successfully.
                    741:      */
                    742:     _XMErrorCode = XME_NO_ERROR;
                    743:     return(_SUCCESS);
                    744: }
                    745: 
                    746: 
                    747: 
                    748: /*
                    749:  * _XMTransToOrigin - Internal subroutine to translate the point at
                    750:  *                   the center of the current pane and selection to the 
                    751:  *                   the menu origin.
                    752:  *
                    753:  *     WARNING! ****** Be certain that all menu depencies have been
                    754:  *                     recomputed before calling this routine or
                    755:  *                     unpredicable results will follow.
                    756:  */
                    757: _XMTransToOrigin(menu, p_ptr, s_ptr, x_pos, y_pos, orig_x, orig_y)
                    758:     register XMenu *menu;      /* Menu being computed against. */
                    759:     register XMPane *p_ptr;    /* Current pane pointer. */
                    760:     register XMSelect *s_ptr;  /* Current selection pointer. */
                    761:     int x_pos;                 /* X coordinate of point to translate. */
                    762:     int y_pos;                 /* Y coordinate of point to translate. */
                    763:     int *orig_x;               /* Return value X coord. of the menu origin. */
                    764:     int *orig_y;               /* Return value Y coord. of the menu origin. */
                    765: {
                    766:     register int l_orig_x;     /* Local X coordinate of the menu origin. */
                    767:     register int l_orig_y;     /* local Y coordinate of the menu origin. */
                    768:     
                    769:     /*
                    770:      * Translate the menu origin such that the cursor hot point will be in the
                    771:      * center of the desired current selection and pane.
                    772:      */
                    773: 
                    774:     /*
                    775:      * First translate to the upper left of the current selection window.
                    776:      */
                    777:     l_orig_x = x_pos - (menu->s_width >> 1);
                    778:     l_orig_y = y_pos - (menu->s_height >> 1);
                    779: 
                    780:     /*
                    781:      * Then translate to the upper left of the current pane window.
                    782:      */
                    783:     l_orig_x -= (s_ptr->window_x + menu->p_bdr_width);
                    784:     l_orig_y -= (s_ptr->window_y + menu->p_bdr_width);
                    785: 
                    786:     /*
                    787:      * Finally translate to the upper left of the menu.
                    788:      */
                    789:     l_orig_x -= p_ptr->window_x;
                    790:     l_orig_y -= p_ptr->window_y;
                    791: 
                    792:     /*
                    793:      * Set the return values.
                    794:      */
                    795:     *orig_x = l_orig_x;
                    796:     *orig_y = l_orig_y;
                    797: }
                    798: 
                    799: 
                    800: 
                    801: /*
                    802:  * _XMRefreshPaneLabels - Internal subroutine that refreshes
                    803:  *                       the labels in a menu pane.
                    804:  */
                    805: _XMRefreshPaneText(menu, pane)
                    806:     register XMenu *menu;
                    807:     register XMPane *pane;
                    808: {
                    809:     /*
                    810:      * First clear the pane. 
                    811:      */
                    812:     XClear(pane->window);
                    813:     /*
                    814:      * Then redraw the label text.
                    815:      */
                    816:     XTextMask(
                    817:        pane->window,
                    818:        pane->label_x, pane->label_uy,
                    819:        pane->label, pane->label_length,
                    820:        menu->p_fnt_info->id,
                    821:        menu->p_frg_color
                    822:     );
                    823:     XTextMask(
                    824:        pane->window,
                    825:        pane->label_x, pane->label_ly,
                    826:        pane->label, pane->label_length,
                    827:        menu->p_fnt_info->id,
                    828:        menu->p_frg_color
                    829:     );
                    830: }
                    831: 
                    832: 
                    833: 
                    834: /*
                    835:  * _XMRefreshPane - Internal subroutine to completely refresh
                    836:  *                 the contents of a pane.
                    837:  */
                    838: _XMRefreshPane(menu,pane)
                    839:     register XMenu *menu;
                    840:     register XMPane *pane;
                    841: {
                    842:     register XMSelect *s_list = pane->s_list;
                    843:     register XMSelect *s_ptr;
                    844: 
                    845:     /*
                    846:      * First clear the pane. 
                    847:      */
                    848:     XClear(pane->window);
                    849:     /*
                    850:      * Then redraw the label text.
                    851:      */
                    852:     XTextMask(
                    853:        pane->window,
                    854:        pane->label_x, pane->label_uy,
                    855:        pane->label, pane->label_length,
                    856:        menu->p_fnt_info->id,
                    857:        menu->p_frg_color
                    858:     );
                    859:     XTextMask(
                    860:        pane->window,
                    861:        pane->label_x, pane->label_ly,
                    862:        pane->label, pane->label_length,
                    863:        menu->p_fnt_info->id,
                    864:        menu->p_frg_color
                    865:     );
                    866:     /*
                    867:      * Finally refresh each selection.
                    868:      */
                    869:     for (s_ptr = s_list->next; s_ptr != s_list; s_ptr = s_ptr->next){
                    870:        _XMRefreshSelection(menu, s_ptr);
                    871:     }
                    872: }
                    873: 
                    874: 
                    875: 
                    876: /*
                    877:  * _XMRefreshSelection - Internal subroutine that refreshes 
                    878:  *                      a single selection window.
                    879:  */
                    880: _XMRefreshSelection(menu, select)
                    881:     register XMenu *menu;
                    882:     register XMSelect *select;
                    883: {
                    884:     register int width = select->window_w;
                    885:     register int height = select->window_h;
                    886:     register int bdr_width = menu->s_bdr_width;
                    887:     
                    888:     if (select->activated) {
                    889:        if (menu->menu_mode == INVERT) {
                    890:            XPixSet(select->window, 0, 0, width, height, menu->s_frg_color);
                    891:            XTextMask(
                    892:                 select->window,
                    893:                 select->label_x, select->label_y,
                    894:                 select->label, select->label_length,
                    895:                 menu->s_fnt_info->id,
                    896:                menu->bkgnd_color
                    897:             );
                    898:        }
                    899:         else {
                    900:             /*
                    901:              * Since most drawing routines with arbitrary width lines
                    902:             * are slow compared to raster-ops lets use a raster-op to
                    903:             * draw the boxes.
                    904:              */
                    905:            XPixSet(select->window, 0, 0, width, height, menu->bkgnd_color);
                    906:             XPixSet(
                    907:                 select->window,
                    908:                 0, 0,
                    909:                 (width - bdr_width), bdr_width,
                    910:                menu->s_bdr_color
                    911:             );
                    912:             XPixSet(
                    913:                 select->window,
                    914:                 (0 + (width - bdr_width)), 0,
                    915:                 bdr_width, (height - bdr_width),
                    916:                menu->s_bdr_color
                    917:             );
                    918:             XPixSet(
                    919:                 select->window,
                    920:                 (0 + bdr_width), (0 + (height - bdr_width)),
                    921:                 (width - bdr_width), bdr_width,
                    922:                menu->s_bdr_color
                    923:             );
                    924:             XPixSet(
                    925:                 select->window,
                    926:                 0, (0 + bdr_width),
                    927:                 bdr_width, (height - bdr_width),
                    928:                menu->s_bdr_color
                    929:             );
                    930:            XTextMask(
                    931:                 select->window,
                    932:                 select->label_x, select->label_y,
                    933:                 select->label, select->label_length,
                    934:                 menu->s_fnt_info->id,
                    935:                menu->s_frg_color
                    936:             );
                    937:         }
                    938:     }
                    939:     else {
                    940:        XClear(select->window);
                    941:         XTextMask(
                    942:             select->window,
                    943:             select->label_x, select->label_y,
                    944:             select->label, select->label_length,
                    945:             menu->s_fnt_info->id,
                    946:             menu->s_frg_color
                    947:         );
                    948:     }
                    949: }

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