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Annotation of researchv9/X11/src/X.V11R1/clients/uwm/GetButton.c, revision 1.1

1.1     ! root        1: #ifndef lint
        !             2: static char *rcsid_GetButton_c = "$Header: GetButton.c,v 1.24 87/09/09 19:20:45 swick Exp $";
        !             3: #endif lint
        !             4: 
        !             5: #include <X11/copyright.h>
        !             6: 
        !             7: /*
        !             8:  * Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
        !             9:  *
        !            10:  *                         All Rights Reserved
        !            11:  *
        !            12:  * Permission to use, copy, modify, and distribute this software and its
        !            13:  * documentation for any purpose and without fee is hereby granted,
        !            14:  * provided that the above copyright notice appear in all copies and that
        !            15:  * both that copyright notice and this permission notice appear in
        !            16:  * supporting documentation, and that the name of Digital Equipment
        !            17:  * Corporation not be used in advertising or publicity pertaining to
        !            18:  * distribution of the software without specific, written prior permission.
        !            19:  *
        !            20:  *
        !            21:  * DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
        !            22:  * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
        !            23:  * DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
        !            24:  * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
        !            25:  * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
        !            26:  * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
        !            27:  * SOFTWARE.
        !            28:  */
        !            29: 
        !            30: 
        !            31: 
        !            32: /*
        !            33:  * MODIFICATION HISTORY
        !            34:  *
        !            35:  * 000 -- M. Gancarz, DEC Ultrix Engineering Group
        !            36:  * 001 -- L. Guarino Reid, DEC Ultrix Engineering Group, Western Software Lab
        !            37:  *       February 16, 1987
        !            38:  *       Add EnterWindow, LeaveWindow, and MouseMotion as recognized
        !            39:  *       uwm buttons for uwm menus. Add bug fixes to prevent mem faults
        !            40:  *       if icon_str is NULL.
        !            41:  * 002 -- L. Guarino Reid, DEC Ultrix Engineering Group
        !            42:  *       April 16, 1987
        !            43:  *       Convert to X11
        !            44:  */
        !            45: 
        !            46: #ifndef lint
        !            47: static char *sccsid = "@(#)GetButton.c 3.8     1/24/86";
        !            48: #endif
        !            49: /*
        !            50:  *     GetButton - This subroutine is used by the Ultrix Window Manager (uwm)
        !            51:  *     to acquire button events.  It waits for a button event to occur
        !            52:  *     and handles all event traffic in the interim.
        !            53:  *
        !            54:  *     File:           GetButton.c
        !            55:  */
        !            56: 
        !            57: #include "uwm.h"
        !            58: #include <X11/Xutil.h>
        !            59: #include <X11/Xatom.h>
        !            60: 
        !            61: #define ICONSTR        (icon_str ? icon_str : "")
        !            62: 
        !            63: Bool GetButton(button_event)
        !            64:     XEvent *button_event;      /* Button event packet. */
        !            65: {
        !            66: #define STRLEN 50
        !            67:     XKeyPressedEvent *kp_event;        /* Key pressed event. */
        !            68:     char *icon_str;            /* Icon's name string. */
        !            69:     register int icon_str_len; /* Icon name string lenght.  */
        !            70:     register int key_char;     /* Key press character code. */
        !            71:     register int icon_x;       /* Icon window X coordinate. */
        !            72:     register int icon_y;       /* Icon window Y coordinate. */
        !            73:     register int icon_w;       /* Icon window width. */
        !            74:     register int icon_h;       /* Icon window height. */    
        !            75:     int status;                        /* Routine call return status. */
        !            76:     Window icon;               /* Icon window. */
        !            77:     Window appl;               /* Application window. */
        !            78:     XWindowAttributes icon_info;       /* Icon window info structure. */
        !            79:     char kbd_str[STRLEN];              /* Keyboard string. */
        !            80:     int nbytes;                 /* Keyboard string length. */
        !            81:     int i;                      /* Iteration counter. */
        !            82: 
        !            83: 
        !            84:     /*
        !            85:      * Get next event from input queue and store it in the event packet
        !            86:      * passed to GetButton.
        !            87:      */
        !            88:     XNextEvent(dpy, button_event);
        !            89: 
        !            90:     /*
        !            91:      * The event occured on the root window, check for substructure
        !            92:      * changes. Otherwise, it must be a mouse button event. 
        !            93:      */
        !            94:     if (((XAnyEvent *)button_event)->window == RootWindow(dpy, scr)) {
        !            95: 
        !            96:        switch (button_event->type) {
        !            97: 
        !            98:          case CreateNotify:
        !            99:          case UnmapNotify:
        !           100:          case ReparentNotify:
        !           101:          case ConfigureNotify:
        !           102:          case GravityNotify:
        !           103:          case MapNotify:
        !           104:          case MappingNotify:
        !           105:          case CirculateNotify: return(FALSE);
        !           106:                
        !           107:          case MapRequest: 
        !           108:                CheckMap(((XMapEvent *)button_event)->window);
        !           109:                return(FALSE);
        !           110: 
        !           111:          case ConfigureRequest: 
        !           112:                Configure((XConfigureEvent *)button_event);
        !           113:                return(FALSE);
        !           114: 
        !           115:          case CirculateRequest: 
        !           116:                Circulate((XCirculateEvent *)button_event);
        !           117:                return(FALSE);
        !           118: 
        !           119:          case DestroyNotify: 
        !           120:                RemoveIcon(((XDestroyWindowEvent *)button_event)->window);
        !           121:                return(FALSE);
        !           122: 
        !           123:          case FocusIn: 
        !           124:                if (((XFocusInEvent *)button_event)->detail
        !           125:                    == NotifyPointerRoot) {
        !           126:                    if (FocusSetByUser) {
        !           127:                                XSetInputFocus(dpy, PointerRoot, None, CurrentTime);
        !           128:                         FocusSetByUser = FALSE;
        !           129:                    }
        !           130:                }
        !           131:                return (FALSE);
        !           132: 
        !           133:           case FocusOut:
        !           134:                if (((XFocusOutEvent *)button_event)->detail
        !           135:                    == NotifyPointerRoot) {
        !           136:                     if (!FocusSetByUser) {
        !           137:                        XSetInputFocus(dpy, PointerRoot, None, CurrentTime);
        !           138:                    }
        !           139:                }
        !           140:                return (FALSE);
        !           141: 
        !           142:          case ButtonPress:
        !           143:          case ButtonRelease:
        !           144:                return(TRUE);
        !           145: 
        !           146:          default: 
        !           147:            printf("uwm internal error: unexpected event on Root Window\n");
        !           148:            return(FALSE); 
        !           149:        }
        !           150:     }
        !           151: 
        !           152:     /*
        !           153:      * If the event type is EnterWindow, LeaveWindow, or MouseMoved,
        !           154:      * we are processing a menu. 
        !           155:      * If the event type is ButtonPress or ButtonRelease,
        !           156:      * we have a button event.      */
        !           157:     switch (button_event->type) {
        !           158:        case EnterNotify:
        !           159:        case LeaveNotify: 
        !           160:        case MotionNotify: 
        !           161:        case ButtonPress: 
        !           162:        case ButtonRelease: 
        !           163:        return(TRUE); 
        !           164:        default: break;
        !           165:     }
        !           166: 
        !           167:     /*
        !           168:      * Ok, if the event is not on the root window it must be an event on
        !           169:      * one of the icons owned by uwm.
        !           170:      */
        !           171:     icon = ((XAnyEvent *)button_event)->window;
        !           172: 
        !           173:     /*
        !           174:      * Find out current information about the icon window.
        !           175:      */
        !           176:     status = XGetWindowAttributes(dpy, icon, &icon_info);
        !           177:     if (status == FAILURE) return(FALSE);
        !           178: 
        !           179:     /*
        !           180:      * If the event is an UnmapWindow event or a ConfigureNotify event,
        !           181:      * then return FALSE.
        !           182:      */
        !           183:     if (button_event->type == MapNotify || 
        !           184:         button_event->type == UnmapNotify ||
        !           185:         button_event->type == CreateNotify ||
        !           186:         button_event->type == ReparentNotify ||
        !           187:         button_event->type == GravityNotify ||
        !           188:         button_event->type == CirculateNotify ||
        !           189:         button_event->type == ConfigureNotify)
        !           190:         return(FALSE);
        !           191: 
        !           192:     /*
        !           193:      * Initialize the icon position variables.
        !           194:      */
        !           195:     icon_x = icon_info.x;
        !           196:     icon_y = icon_info.y;
        !           197: 
        !           198:     /*
        !           199:      * Get the name of the window associated with the icon and
        !           200:      * determine its length.
        !           201:      */
        !           202:     if (!IsIcon(icon, icon_x, icon_y, FALSE, &appl)) return(FALSE);
        !           203:     icon_str = GetIconName(appl);
        !           204:     icon_str_len = icon_str ? strlen(icon_str) : 0;
        !           205: 
        !           206:     /*
        !           207:      * If the event is a window exposure event and the icon's name string
        !           208:      * is not of zero length, simply repaint the text in the icon window
        !           209:      * and return FALSE.
        !           210:      */
        !           211:     if (button_event->type == Expose && (!Freeze || Frozen == 0)) {
        !           212:         if (icon_info.width != 
        !           213:          XTextWidth(IFontInfo, ICONSTR, strlen(ICONSTR))+(HIconPad << 1)) {
        !           214:          XResizeWindow(dpy, icon, 
        !           215:            XTextWidth(IFontInfo, ICONSTR, strlen(ICONSTR))+(HIconPad << 1),
        !           216:            IFontInfo->ascent + IFontInfo->descent + (VIconPad << 1));
        !           217:        }
        !           218:        XClearWindow(dpy, icon);
        !           219:         if (icon_str_len != 0) {
        !           220:             XDrawImageString(dpy, icon,
        !           221:                      IconGC, HIconPad, VIconPad+IFontInfo->ascent,
        !           222:                      icon_str, icon_str_len);
        !           223:            /*
        !           224:             * Remember to free the icon name string.
        !           225:             */
        !           226:            free(icon_str);
        !           227:         }
        !           228:        return(FALSE);
        !           229:     }
        !           230: 
        !           231:     /*
        !           232:      * If we have gotten this far event can only be a key pressed event.
        !           233:      */
        !           234:     kp_event = (XKeyPressedEvent *) button_event;
        !           235: 
        !           236:     /* 
        !           237:      * We convert the key pressed event to ascii.
        !           238:      */
        !           239:     nbytes = XLookupString(kp_event, kbd_str, STRLEN, NULL);
        !           240: 
        !           241:     /*
        !           242:      * If kbd_str is a "non-string", then don't do anything.
        !           243:      */
        !           244:     if (nbytes == 0) {
        !           245:         if (icon_str) free(icon_str);
        !           246:         return(FALSE);
        !           247:     }
        !           248:     for (i = 0; i < nbytes; i++) {
        !           249:         key_char = kbd_str[i];
        !           250:         /*
        !           251:          * If the key was <DELETE>, then delete a character from the end of
        !           252:          * the name, return FALSE.
        !           253:          *
        !           254:          * If the key was <CTRL-U>, then wipe out the entire window name
        !           255:          * and return FALSE.
        !           256:          *
        !           257:          * All other ctrl keys are squashed and we return FALSE.
        !           258:          *
        !           259:          * All printable characters are appended to the window's name, which
        !           260:          * may have to be grown to allow for the extra length.
        !           261:          */
        !           262:         if (key_char == '\177') {
        !           263:             /*
        !           264:              * <DELETE>
        !           265:              */
        !           266:             if (icon_str_len > 0) {
        !           267:                icon_str_len--;
        !           268:                icon_str[icon_str_len] = '\0';
        !           269:            }
        !           270:         }
        !           271:         else if (key_char == '\025') {
        !           272:             /*
        !           273:              * <CTRL-U>
        !           274:              */
        !           275:             if (icon_str_len > 0) {
        !           276:                icon_str_len = 0;
        !           277:                icon_str[0] = '\0';
        !           278:            }
        !           279:         }
        !           280:         else if (key_char < IFontInfo->min_char_or_byte2 ||
        !           281:                  key_char > IFontInfo->max_char_or_byte2) {
        !           282:             /*
        !           283:              * Any other random (non-printable) key; ignore it.
        !           284:              */
        !           285:            /* do nothing */ ;
        !           286:         }
        !           287:         else {
        !           288:             /*
        !           289:              * ASCII Alphanumerics.
        !           290:              */
        !           291:            if (icon_str == NULL)
        !           292:                icon_str = (char *) malloc (icon_str_len + 2);
        !           293:            else
        !           294:                icon_str = (char *)realloc(icon_str, (icon_str_len + 2));
        !           295:             if (icon_str == NULL) {
        !           296:                 errno = ENOMEM;
        !           297:                 Error("GetButton -> Realloc of window name string memory failed.");
        !           298:             }
        !           299:             icon_str[icon_str_len] = key_char;
        !           300:             icon_str[icon_str_len + 1] = '\0';
        !           301:             icon_str_len += 1;
        !           302:         }
        !           303:     }
        !           304: 
        !           305:     /*
        !           306:      * Now that we have changed the size of the icon we have to reconfigure
        !           307:      * it so that everything looks good.  Oh yes, don't forget to move the
        !           308:      * mouse so that it stays in the window!
        !           309:      */
        !           310: 
        !           311:     /*
        !           312:      * Set the window name to the new string.
        !           313:      */
        !           314:     XSetIconName(dpy, appl, ICONSTR);
        !           315: 
        !           316:     /*
        !           317:      * Determine the new icon window configuration.
        !           318:      */
        !           319:     icon_h = IFontInfo->ascent + IFontInfo->descent + (VIconPad << 1);
        !           320:     icon_w = XTextWidth(IFontInfo, ICONSTR, strlen(ICONSTR));
        !           321:     if (icon_w == 0) {
        !           322:         icon_w = icon_h;
        !           323:     }
        !           324:     else {
        !           325:        icon_w += (HIconPad << 1);
        !           326:     }
        !           327: 
        !           328:     if (icon_x < 0) icon_x = 0;
        !           329:     if (icon_y < 0) icon_y = 0;
        !           330:     if (icon_x - 1 + icon_w + (IBorderWidth << 1) > ScreenWidth) {
        !           331:        icon_x = ScreenWidth - icon_w - (IBorderWidth << 1) + 1;
        !           332:     }
        !           333:     if (icon_y - 1 + icon_h + (IBorderWidth << 1) > ScreenHeight) {
        !           334:        icon_y = ScreenHeight - icon_h - (IBorderWidth << 1) + 1;
        !           335:     }
        !           336: 
        !           337:     XMoveResizeWindow(dpy, icon, icon_x, icon_y, icon_w, icon_h);
        !           338:     XWarpPointer(dpy, None, icon, 
        !           339:        0, 0, 0, 0, (icon_w >> 1), (icon_h >> 1));
        !           340: 
        !           341:     /* 
        !           342:      * Free the local storage and return FALSE.
        !           343:      */
        !           344:     if (icon_str) free(icon_str);
        !           345:     return(FALSE);
        !           346: }
        !           347: 
        !           348: CheckMap(window)
        !           349: Window window;
        !           350: {
        !           351:     XSizeHints sizehints;
        !           352:     XWMHints *wmhints;
        !           353:     int x, y, w, h;
        !           354:     XWMHints *XGetWMHints();
        !           355:     Window transient_for;
        !           356:     Bool configureit = False;
        !           357:     Window jW;
        !           358:     int border_width, j;
        !           359: 
        !           360:     /*
        !           361:      * Gather info about the event window.
        !           362:      */
        !           363: 
        !           364:     /* if it's a transient window, we won't rubber-band
        !           365:      * note that this call always sets transient_for.
        !           366:      */
        !           367:     if (XGetTransientForHint( dpy, window, &transient_for )) {
        !           368:         XGetGeometry( dpy, window, &jW, &x, &y, &w, &h, &border_width, &j );
        !           369:     }
        !           370:     else {
        !           371:        if ((wmhints = XGetWMHints(dpy, window)) &&
        !           372:            (wmhints->flags&StateHint) &&
        !           373:            (wmhints->initial_state == IconicState)) {
        !           374:            /* window will remain created size -- no rubberbanding */
        !           375:            /* note that Iconify only uses its first argument */
        !           376:            Iconify(window, 0, 0, 0, 0);
        !           377:            return;
        !           378:        }
        !           379: 
        !           380:        sizehints.flags = 0; 
        !           381: 
        !           382:         XGetSizeHints(dpy, window, &sizehints, XA_WM_NORMAL_HINTS);
        !           383:        CheckConsistency(&sizehints);
        !           384:        AskUser(dpy, scr, window, &x, &y, &w, &h, &sizehints);
        !           385:        if (x != sizehints.x || y != sizehints.y ||
        !           386:            w != sizehints.width || h != sizehints.height)
        !           387:          configureit = True;
        !           388: 
        !           389:        sizehints.flags |= (USPosition | USSize);
        !           390:        sizehints.x = x;
        !           391:        sizehints.y = y;
        !           392:        sizehints.width = w;
        !           393:        sizehints.height = h;
        !           394:        XSetSizeHints(dpy, window, &sizehints, XA_WM_NORMAL_HINTS);
        !           395:     }
        !           396: 
        !           397:     if (x<0 || y<0) {
        !           398:       if (transient_for == None) /* need the border width */
        !           399:          XGetGeometry( dpy, window, &jW, &j, &j, &j, &j, &border_width, &j );
        !           400: 
        !           401:       if (x<0) x += DisplayWidth(dpy, scr) - w - (border_width<<1);
        !           402:       if (y<0) y += DisplayHeight(dpy, scr) - h - (border_width<<1);
        !           403: 
        !           404:       configureit = True;
        !           405:     }
        !           406: 
        !           407:     if (configureit)
        !           408:       XMoveResizeWindow(dpy, window, x, y, w, h);
        !           409: 
        !           410:     XMapRaised(dpy, window);
        !           411: }
        !           412: 
        !           413: Configure(event)
        !           414: XConfigureRequestEvent *event;
        !           415: {
        !           416:   XWindowChanges values;
        !           417:   
        !           418:   values.x = event->x;
        !           419:   values.y = event->y;
        !           420:   values.width = event->width;
        !           421:   values.height = event->height;
        !           422:   values.border_width = event->border_width;
        !           423:   values.stack_mode = event->detail;
        !           424:   values.sibling = event->above;
        !           425: 
        !           426:   XConfigureWindow(event->display, event->window, event->value_mask, &values);
        !           427: }
        !           428: 
        !           429: Circulate(event)
        !           430: XCirculateEvent *event;
        !           431: {
        !           432:   if (event->place == PlaceOnTop)
        !           433:    XRaiseWindow(event->display, event->window);
        !           434:   else
        !           435:    XLowerWindow(event->display, event->window);
        !           436: }
        !           437: 

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