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- /*
- * $XConsortium: Mailbox.c,v 1.58 91/06/13 16:50:32 keith Exp $
- *
- * Copyright 1988 Massachusetts Institute of Technology
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose and without fee is hereby granted, provided
- * that the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation, and that the name of M.I.T. not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission. M.I.T. makes no representations about the
- * suitability of this software for any purpose. It is provided "as is"
- * without express or implied warranty.
- *
- * Author: Jim Fulton, MIT X Consortium
- *
- * I recommend that you use the new mailfull and mailempty bitmaps instead of
- * the ugly mailboxes:
- *
- * XBiff*fullPixmap: mailfull
- * XBiff*emptyPixmap: mailempty
- */
-
- #include <X11/IntrinsicP.h> /* for toolkit stuff */
- #include <X11/StringDefs.h> /* for useful atom names */
- #include <X11/cursorfont.h> /* for cursor constants */
- #include <X11/Xosdefs.h> /* for X_NOT_POSIX def */
- #include <sys/stat.h> /* for stat() ** needs types.h ***/
- #include <stdio.h> /* for printing error messages */
- #include <pwd.h> /* for getting username */
-
- #ifndef X_NOT_POSIX
- #ifdef _POSIX_SOURCE
- # include <sys/wait.h>
- #else
- #define _POSIX_SOURCE
- # include <sys/wait.h>
- #undef _POSIX_SOURCE
- #endif
- # define waitCode(w) WEXITSTATUS(w)
- # define waitSig(w) WIFSIGNALED(w)
- typedef int waitType;
- # define INTWAITTYPE
- #else /* ! X_NOT_POSIX */
- #ifdef SYSV
- # define waitCode(w) (((w) >> 8) & 0x7f)
- # define waitSig(w) ((w) & 0xff)
- typedef int waitType;
- # define INTWAITTYPE
- #else
- # include <sys/wait.h>
- # define waitCode(w) ((w).w_T.w_Retcode)
- # define waitSig(w) ((w).w_T.w_Termsig)
- typedef union wait waitType;
- #endif /* SYSV else */
- #endif /* ! X_NOT_POSIX else */
-
- #include <X11/bitmaps/mailfull> /* for flag up (mail present) bits */
- #include <X11/bitmaps/mailempty> /* for flag down (mail not here) */
-
- #include <X11/Xaw/XawInit.h>
- #include <X11/Xaw/MailboxP.h> /* for implementation mailbox stuff */
- #include <X11/Xmu/Drawing.h>
- #include <X11/extensions/shape.h>
-
- /*
- * The default user interface is to have the mailbox turn itself off whenever
- * the user presses a button in it. Expert users might want to make this
- * happen on EnterWindow. It might be nice to provide support for some sort of
- * exit callback so that you can do things like press q to quit.
- */
-
- static char defaultTranslations[] =
- "<ButtonPress>: unset()";
-
- static void Check(), Set(), Unset();
-
- static XtActionsRec actionsList[] = {
- { "check", Check },
- { "unset", Unset },
- { "set", Set },
- };
-
-
- /* Initialization of defaults */
-
- #define offset(field) XtOffsetOf(MailboxRec, mailbox.field)
- #define goffset(field) XtOffsetOf(WidgetRec, core.field)
-
- static Dimension defDim = 48;
- static Pixmap nopix = None;
-
- static XtResource resources[] = {
- { XtNwidth, XtCWidth, XtRDimension, sizeof (Dimension),
- goffset (width), XtRDimension, (XtPointer)&defDim },
- { XtNheight, XtCHeight, XtRDimension, sizeof (Dimension),
- goffset (height), XtRDimension, (XtPointer)&defDim },
- { XtNupdate, XtCInterval, XtRInt, sizeof (int),
- offset (update), XtRString, "30" },
- { XtNforeground, XtCForeground, XtRPixel, sizeof (Pixel),
- offset (foreground_pixel), XtRString, XtDefaultForeground },
- { XtNfile, XtCFile, XtRString, sizeof (String),
- offset (filename), XtRString, NULL },
- { XtNcheckCommand, XtCCheckCommand, XtRString, sizeof(char*),
- offset (check_command), XtRString, NULL},
- { XtNvolume, XtCVolume, XtRInt, sizeof(int),
- offset (volume), XtRString, "33"},
- { XtNonceOnly, XtCBoolean, XtRBoolean, sizeof(Boolean),
- offset (once_only), XtRImmediate, (XtPointer)False },
- { XtNfullPixmap, XtCPixmap, XtRBitmap, sizeof(Pixmap),
- offset (full.bitmap), XtRString, "flagup" },
- { XtNfullPixmapMask, XtCPixmapMask, XtRBitmap, sizeof(Pixmap),
- offset (full.mask), XtRBitmap, (XtPointer) &nopix },
- { XtNemptyPixmap, XtCPixmap, XtRBitmap, sizeof(Pixmap),
- offset (empty.bitmap), XtRString, "flagdown" },
- { XtNemptyPixmapMask, XtCPixmapMask, XtRBitmap, sizeof(Pixmap),
- offset (empty.mask), XtRBitmap, (XtPointer) &nopix },
- { XtNflip, XtCFlip, XtRBoolean, sizeof(Boolean),
- offset (flipit), XtRString, "true" },
- { XtNshapeWindow, XtCShapeWindow, XtRBoolean, sizeof(Boolean),
- offset (shapeit), XtRString, "false" },
- };
-
- #undef offset
- #undef goffset
-
- static void GetMailFile(), CloseDown();
- static void check_mailbox(), redraw_mailbox(), beep();
- static void Initialize(), Realize(), Destroy(), Redisplay();
- static Boolean SetValues();
-
- MailboxClassRec mailboxClassRec = {
- { /* core fields */
- /* superclass */ (WidgetClass) &simpleClassRec,
- /* class_name */ "Mailbox",
- /* widget_size */ sizeof(MailboxRec),
- /* class_initialize */ XawInitializeWidgetSet,
- /* class_part_initialize */ NULL,
- /* class_inited */ FALSE,
- /* initialize */ Initialize,
- /* initialize_hook */ NULL,
- /* realize */ Realize,
- /* actions */ actionsList,
- /* num_actions */ XtNumber(actionsList),
- /* resources */ resources,
- /* resource_count */ XtNumber(resources),
- /* xrm_class */ NULLQUARK,
- /* compress_motion */ TRUE,
- /* compress_exposure */ TRUE,
- /* compress_enterleave */ TRUE,
- /* visible_interest */ FALSE,
- /* destroy */ Destroy,
- /* resize */ NULL,
- /* expose */ Redisplay,
- /* set_values */ SetValues,
- /* set_values_hook */ NULL,
- /* set_values_almost */ XtInheritSetValuesAlmost,
- /* get_values_hook */ NULL,
- /* accept_focus */ NULL,
- /* version */ XtVersion,
- /* callback_private */ NULL,
- /* tm_table */ defaultTranslations,
- /* query_geometry */ XtInheritQueryGeometry,
- /* display_accelerator */ XtInheritDisplayAccelerator,
- /* extension */ NULL
- },
- { /* simple fields */
- /* change_sensitive */ XtInheritChangeSensitive
- },
- { /* mailbox fields */
- /* ignore */ 0
- }
- };
-
- WidgetClass mailboxWidgetClass = (WidgetClass) &mailboxClassRec;
-
-
- /*
- * widget initialization
- */
-
- static GC get_mailbox_gc (w)
- MailboxWidget w;
- {
- XtGCMask valuemask;
- XGCValues xgcv;
-
- valuemask = GCForeground | GCBackground | GCFunction | GCGraphicsExposures;
- xgcv.foreground = w->mailbox.foreground_pixel;
- xgcv.background = w->core.background_pixel;
- xgcv.function = GXcopy;
- xgcv.graphics_exposures = False; /* this is Bool, not Boolean */
- return (XtGetGC ((Widget) w, valuemask, &xgcv));
- }
-
-
- /* ARGSUSED */
- static void Initialize (request, new)
- Widget request, new;
- {
- MailboxWidget w = (MailboxWidget) new;
- int shape_event_base, shape_error_base;
-
- if (w->core.width <= 0) w->core.width = 1;
- if (w->core.height <= 0) w->core.height = 1;
-
- if (w->mailbox.shapeit && !XShapeQueryExtension (XtDisplay (w),
- &shape_event_base,
- &shape_error_base))
- w->mailbox.shapeit = False;
- w->mailbox.shape_cache.mask = None;
- w->mailbox.gc = get_mailbox_gc (w);
- w->mailbox.interval_id = (XtIntervalId) 0;
- w->mailbox.full.pixmap = None;
- w->mailbox.empty.pixmap = None;
- w->mailbox.flag_up = FALSE;
- w->mailbox.last_size = 0;
- if (!w->mailbox.filename) GetMailFile (w);
- return;
- }
-
-
- /*
- * action procedures
- */
-
- /*
- * pretend there is new mail; put widget in flagup state
- */
-
- /* ARGSUSED */
- static void Set (gw, event, params, nparams)
- Widget gw;
- XEvent *event;
- String *params;
- Cardinal *nparams;
- {
- MailboxWidget w = (MailboxWidget) gw;
-
- w->mailbox.last_size = -1;
-
- check_mailbox (w, TRUE, FALSE); /* redraw, no reset */
-
- return;
- }
-
-
- /*
- * ack the existing mail; put widget in flagdown state
- */
-
- /* ARGSUSED */
- static void Unset (gw, event, params, nparams)
- Widget gw;
- XEvent *event;
- String *params;
- Cardinal *nparams;
- {
- MailboxWidget w = (MailboxWidget) gw;
-
- check_mailbox (w, TRUE, TRUE); /* redraw, reset */
-
- return;
- }
-
-
- /*
- * look to see if there is new mail; if so, Set, else Unset
- */
-
- /* ARGSUSED */
- static void Check (gw, event, params, nparams)
- Widget gw;
- XEvent *event;
- String *params;
- Cardinal *nparams;
- {
- MailboxWidget w = (MailboxWidget) gw;
-
- check_mailbox (w, TRUE, FALSE); /* redraw, no reset */
-
- return;
- }
-
-
- /* ARGSUSED */
- static void clock_tic (client_data, id)
- XtPointer client_data;
- XtIntervalId *id;
- {
- MailboxWidget w = (MailboxWidget) client_data;
-
- check_mailbox (w, FALSE, FALSE); /* no redraw, no reset */
-
- /*
- * and reset the timer
- */
-
- w->mailbox.interval_id =
- XtAppAddTimeOut (XtWidgetToApplicationContext((Widget) w),
- w->mailbox.update * 1000, clock_tic, client_data);
-
- return;
- }
-
- static Pixmap make_pixmap (dpy, w, bitmap, depth, flip, widthp, heightp)
- Display *dpy;
- MailboxWidget w;
- Pixmap bitmap;
- Boolean flip;
- int depth;
- int *widthp, *heightp;
- {
- Window root;
- int x, y;
- unsigned int width, height, bw, dep;
- unsigned long fore, back;
-
- if (!XGetGeometry (dpy, bitmap, &root, &x, &y, &width, &height, &bw, &dep))
- return None;
-
- *widthp = (int) width;
- *heightp = (int) height;
- if (flip) {
- fore = w->core.background_pixel;
- back = w->mailbox.foreground_pixel;
- } else {
- fore = w->mailbox.foreground_pixel;
- back = w->core.background_pixel;
- }
- return XmuCreatePixmapFromBitmap (dpy, w->core.window, bitmap,
- width, height, depth, fore, back);
- }
-
- static void Realize (gw, valuemaskp, attr)
- Widget gw;
- XtValueMask *valuemaskp;
- XSetWindowAttributes *attr;
- {
- MailboxWidget w = (MailboxWidget) gw;
- register Display *dpy = XtDisplay (w);
- int depth = w->core.depth;
-
- *valuemaskp |= (CWBitGravity | CWCursor);
- attr->bit_gravity = ForgetGravity;
- attr->cursor = XCreateFontCursor (dpy, XC_top_left_arrow);
-
- (*mailboxWidgetClass->core_class.superclass->core_class.realize)
- (gw, valuemaskp, attr);
-
- /*
- * build up the pixmaps that we'll put into the image
- */
- if (w->mailbox.full.bitmap == None) {
- w->mailbox.full.bitmap =
- XCreateBitmapFromData (dpy, w->core.window, (char *) mailfull_bits,
- mailfull_width, mailfull_height);
- }
- if (w->mailbox.empty.bitmap == None) {
- w->mailbox.empty.bitmap =
- XCreateBitmapFromData (dpy, w->core.window, (char *) mailempty_bits,
- mailempty_width, mailempty_height);
- }
-
- w->mailbox.empty.pixmap = make_pixmap (dpy, w, w->mailbox.empty.bitmap,
- depth, False,
- &w->mailbox.empty.width,
- &w->mailbox.empty.height);
- w->mailbox.full.pixmap = make_pixmap (dpy, w, w->mailbox.full.bitmap,
- depth, w->mailbox.flipit,
- &w->mailbox.full.width,
- &w->mailbox.full.height);
-
- if (w->mailbox.empty.mask == None && w->mailbox.full.mask == None)
- w->mailbox.shapeit = False;
-
- w->mailbox.interval_id =
- XtAppAddTimeOut (XtWidgetToApplicationContext((Widget) w),
- w->mailbox.update * 1000, clock_tic, (XtPointer) w);
-
- w->mailbox.shape_cache.mask = None;
-
- check_mailbox (w, TRUE, FALSE);
-
- return;
- }
-
-
- static void Destroy (gw)
- Widget gw;
- {
- MailboxWidget w = (MailboxWidget) gw;
- Display *dpy = XtDisplay (gw);
-
- XtFree (w->mailbox.filename);
- if (w->mailbox.interval_id) XtRemoveTimeOut (w->mailbox.interval_id);
- XtReleaseGC(gw, w->mailbox.gc);
- #define freepix(p) if (p) XFreePixmap (dpy, p)
- freepix (w->mailbox.full.bitmap); /* until cvter does ref cnt */
- freepix (w->mailbox.full.mask); /* until cvter does ref cnt */
- freepix (w->mailbox.full.pixmap);
- freepix (w->mailbox.empty.bitmap); /* until cvter does ref cnt */
- freepix (w->mailbox.empty.mask); /* until cvter does ref cnt */
- freepix (w->mailbox.empty.pixmap);
- freepix (w->mailbox.shape_cache.mask);
- #undef freepix
- return;
- }
-
-
- static void Redisplay (gw)
- Widget gw;
- {
- MailboxWidget w = (MailboxWidget) gw;
-
- check_mailbox (w, TRUE, FALSE);
- }
-
-
- static void check_mailbox (w, force_redraw, reset)
- MailboxWidget w;
- Boolean force_redraw, reset;
- {
- long mailboxsize = 0;
- Boolean readSinceLastWrite = FALSE;
-
- if (w->mailbox.check_command != NULL) {
- waitType wait_status;
- int check_status;
- #ifdef INTWAITTYPE
- wait_status = system(w->mailbox.check_command);
- #else
- wait_status.w_status = system(w->mailbox.check_command);
- #endif
- check_status = waitCode(wait_status);
-
- /* error in sh checkCommand execution */
- if (waitSig(wait_status))
- check_status = 2; /* act as if there is no mail */
-
- switch (check_status) {
- case 0:
- mailboxsize = w->mailbox.last_size + 1;
- break;
- case 2:
- mailboxsize = 0;
- break;
- default: /* treat everything else as no change */
- /* case 1 is no change */
- mailboxsize = w->mailbox.last_size;
- }
- } else {
- struct stat st;
- if (stat (w->mailbox.filename, &st) == 0) {
- mailboxsize = st.st_size;
- readSinceLastWrite = (st.st_atime > st.st_mtime);
- }
- }
-
- /*
- * Now check for changes. If reset is set then we want to pretent that
- * there is no mail. If the mailbox is empty then we want to turn off
- * the flag. Otherwise if the mailbox has changed size then we want to
- * put the flag up, unless the mailbox has been read since the last
- * write.
- *
- * The cases are:
- * o forced reset by user DOWN
- * o no mailbox or empty (zero-sized) mailbox DOWN
- * o if read after most recent write DOWN
- * o same size as last time no change
- * o bigger than last time UP
- * o smaller than last time but non-zero UP
- *
- * The last two cases can be expressed as different from last
- * time and non-zero.
- */
-
- if (reset) { /* forced reset */
- w->mailbox.flag_up = FALSE;
- force_redraw = TRUE;
- } else if (mailboxsize == 0) { /* no mailbox or empty */
- w->mailbox.flag_up = FALSE;
- if (w->mailbox.last_size > 0) force_redraw = TRUE; /* if change */
- } else if (readSinceLastWrite) { /* only when checkCommand is NULL */
- /* mailbox has been read after most recent write */
- if (w->mailbox.flag_up) {
- w->mailbox.flag_up = FALSE;
- force_redraw = TRUE;
- }
- } else if (mailboxsize != w->mailbox.last_size) { /* different size */
- if (!w->mailbox.once_only || !w->mailbox.flag_up)
- beep(w);
- if (!w->mailbox.flag_up)
- force_redraw = w->mailbox.flag_up = TRUE;
- }
-
- w->mailbox.last_size = mailboxsize;
- if (force_redraw) redraw_mailbox (w);
- return;
- }
-
- /*
- * get user name for building mailbox
- */
-
- static void GetMailFile (w)
- MailboxWidget w;
- {
- char *getlogin();
- char *username;
-
- username = getlogin ();
- if (!username) {
- struct passwd *pw = getpwuid (getuid ());
-
- if (!pw) {
- fprintf (stderr, "%s: unable to find a username for you.\n",
- "Mailbox widget");
- CloseDown (w, 1);
- }
- username = pw->pw_name;
- }
- w->mailbox.filename = (String) XtMalloc (strlen (MAILBOX_DIRECTORY) + 1 +
- strlen (username) + 1);
- strcpy (w->mailbox.filename, MAILBOX_DIRECTORY);
- strcat (w->mailbox.filename, "/");
- strcat (w->mailbox.filename, username);
- return;
- }
-
- static void CloseDown (w, status)
- MailboxWidget w;
- int status;
- {
- Display *dpy = XtDisplay (w);
-
- XtDestroyWidget ((Widget)w);
- XCloseDisplay (dpy);
- exit (status);
- }
-
-
- /* ARGSUSED */
- static Boolean SetValues (gcurrent, grequest, gnew)
- Widget gcurrent, grequest, gnew;
- {
- MailboxWidget current = (MailboxWidget) gcurrent;
- MailboxWidget new = (MailboxWidget) gnew;
- Boolean redisplay = FALSE;
-
- if (current->mailbox.update != new->mailbox.update) {
- if (current->mailbox.interval_id)
- XtRemoveTimeOut (current->mailbox.interval_id);
- new->mailbox.interval_id =
- XtAppAddTimeOut (XtWidgetToApplicationContext(gnew),
- new->mailbox.update * 1000, clock_tic,
- (XtPointer) gnew);
- }
-
- if (current->mailbox.foreground_pixel != new->mailbox.foreground_pixel ||
- current->core.background_pixel != new->core.background_pixel) {
- XtReleaseGC (gcurrent, current->mailbox.gc);
- new->mailbox.gc = get_mailbox_gc (new);
- redisplay = TRUE;
- }
-
- return (redisplay);
- }
-
-
- /*
- * drawing code
- */
-
- static void redraw_mailbox (w)
- MailboxWidget w;
- {
- register Display *dpy = XtDisplay (w);
- register Window win = XtWindow (w);
- register int x, y;
- GC gc = w->mailbox.gc;
- Pixel back = w->core.background_pixel;
- struct _mbimage *im;
-
- /* center the picture in the window */
-
- if (w->mailbox.flag_up) { /* paint the "up" position */
- im = &w->mailbox.full;
- if (w->mailbox.flipit) back = w->mailbox.foreground_pixel;
- } else { /* paint the "down" position */
- im = &w->mailbox.empty;
- }
- x = (((int)w->core.width) - im->width) / 2;
- y = (((int)w->core.height) - im->height) / 2;
-
- XSetWindowBackground (dpy, win, back);
- XClearWindow (dpy, win);
- XCopyArea (dpy, im->pixmap, win, gc, 0, 0, im->width, im->height, x, y);
-
- /*
- * XXX - temporary hack; walk up widget tree to find top most parent (which
- * will be a shell) and mash it to have our shape. This will be replaced
- * by a special shell widget.
- */
- if (w->mailbox.shapeit) {
- Widget parent;
-
- for (parent = (Widget) w; XtParent(parent);
- parent = XtParent(parent)) {
- x += parent->core.x + parent->core.border_width;
- y += parent->core.y + parent->core.border_width;
- }
-
- if (im->mask != w->mailbox.shape_cache.mask ||
- x != w->mailbox.shape_cache.x || y != w->mailbox.shape_cache.y) {
- XShapeCombineMask (XtDisplay(parent), XtWindow(parent),
- ShapeBounding, x, y, im->mask, ShapeSet);
- w->mailbox.shape_cache.mask = im->mask;
- w->mailbox.shape_cache.x = x;
- w->mailbox.shape_cache.y = y;
- }
- }
-
- return;
- }
-
-
- static void beep (w)
- MailboxWidget w;
- {
- XBell (XtDisplay (w), w->mailbox.volume);
- return;
- }
-