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- /*
- * xload - display system load average in a window
- *
- * Copyright 1989 Massachusetts Institute of Technology
- *
- * $XConsortium: xload.c,v 1.36 91/05/24 16:57:46 converse Exp $
- */
-
- #include <stdio.h>
- #include <X11/Intrinsic.h>
- #include <X11/Xatom.h>
- #include <X11/StringDefs.h>
- #include <X11/Shell.h>
-
- #include <X11/Xaw/Cardinals.h>
- #include <X11/Xaw/Label.h>
- #include <X11/Xaw/Paned.h>
- #include <X11/Xaw/StripChart.h>
- #include <X11/Xmu/SysUtil.h>
-
- #include "xload.bit"
-
- char *ProgramName;
-
- extern void exit(), GetLoadPoint();
- static void quit();
- static void ClearLights();
- static void SetLights();
-
- /*
- * Definition of the Application resources structure.
- */
-
- typedef struct _XLoadResources {
- Boolean show_label;
- Boolean use_lights;
- } XLoadResources;
-
- /*
- * Command line options table. Only resources are entered here...there is a
- * pass over the remaining options after XtParseCommand is let loose.
- */
-
- static XrmOptionDescRec options[] = {
- {"-scale", "*load.minScale", XrmoptionSepArg, NULL},
- {"-update", "*load.update", XrmoptionSepArg, NULL},
- {"-hl", "*load.highlight", XrmoptionSepArg, NULL},
- {"-highlight", "*load.highlight", XrmoptionSepArg, NULL},
- {"-label", "*label.label", XrmoptionSepArg, NULL},
- {"-nolabel", "*showLabel", XrmoptionNoArg, "False"},
- {"-lights", "*useLights", XrmoptionNoArg, "True"},
- {"-jumpscroll", "*load.jumpScroll", XrmoptionSepArg, NULL},
- };
-
- /*
- * The structure containing the resource information for the
- * Xload application resources.
- */
-
- #define Offset(field) (XtOffsetOf(XLoadResources, field))
-
- static XtResource my_resources[] = {
- {"showLabel", XtCBoolean, XtRBoolean, sizeof(Boolean),
- Offset(show_label), XtRImmediate, (XtPointer) TRUE},
- {"useLights", XtCBoolean, XtRBoolean, sizeof(Boolean),
- Offset(use_lights), XtRImmediate, (XtPointer) FALSE},
- };
-
- #undef Offset
-
- static XLoadResources resources;
-
- static XtActionsRec xload_actions[] = {
- { "quit", quit },
- };
- static Atom wm_delete_window;
- static int light_update = 10 * 1000;
-
- /*
- * Exit with message describing command line format.
- */
-
- void usage()
- {
- fprintf (stderr, "usage: %s [-options ...]\n\n", ProgramName);
- fprintf (stderr, "where options include:\n");
- fprintf (stderr,
- " -display dpy X server on which to display\n");
- fprintf (stderr,
- " -geometry geom size and location of window\n");
- fprintf (stderr,
- " -fn font font to use in label\n");
- fprintf (stderr,
- " -scale number minimum number of scale lines\n");
- fprintf (stderr,
- " -update seconds interval between updates\n");
- fprintf (stderr,
- " -label string annotation text\n");
- fprintf (stderr,
- " -bg color background color\n");
- fprintf (stderr,
- " -fg color graph color\n");
- fprintf (stderr,
- " -hl color scale and text color\n");
- fprintf (stderr,
- " -nolabel removes the label from above the chart.\n");
- fprintf (stderr,
- " -jumpscroll value number of pixels to scroll on overflow\n");
- fprintf (stderr, "\n");
- exit(1);
- }
-
- void main(argc, argv)
- int argc;
- char **argv;
- {
- XtAppContext app_con;
- Widget toplevel, load, pane, label_wid, load_parent;
- Arg args[1];
- Pixmap icon_pixmap = None;
- char *label, host[256];
-
- ProgramName = argv[0];
-
- /* For security reasons, we reset our uid/gid after doing the necessary
- system initialization and before calling any X routines. */
- InitLoadPoint();
- setgid(getgid()); /* reset gid first while still (maybe) root */
- setuid(getuid());
-
- toplevel = XtAppInitialize(&app_con, "XLoad", options, XtNumber(options),
- &argc, argv, NULL, NULL, (Cardinal) 0);
- if (argc != 1) usage();
-
- XtGetApplicationResources( toplevel, (XtPointer) &resources,
- my_resources, XtNumber(my_resources),
- NULL, (Cardinal) 0);
-
- if (resources.use_lights)
- {
- char name[1024];
- XrmString type;
- XrmValue db_value;
- XrmValue int_value;
- Bool found = False;
-
- (void) sprintf (name, "%s.paned.load.update", XtName(toplevel));
- found = XrmGetResource (XtScreenDatabase(XtScreen(toplevel)),
- name, "XLoad.Paned.StripChart.Interval",
- &type, &db_value);
- if (found) {
- int_value.size = sizeof(int);
- int_value.addr = (XPointer) &light_update;
- found = XtConvertAndStore(toplevel, type, &db_value, XtRInt,
- &int_value);
- if (found) light_update *= 1000;
- }
- ClearLights (XtDisplay (toplevel));
- SetLights ((XtPointer) toplevel, (XtIntervalId *) 0);
- }
- else
- {
- /*
- * This is a hack so that f.delete will do something useful in this
- * single-window application.
- */
- XtAppAddActions (app_con, xload_actions, XtNumber(xload_actions));
- XtOverrideTranslations(toplevel,
- XtParseTranslationTable ("<Message>WM_PROTOCOLS: quit()"));
-
- XtSetArg (args[0], XtNiconPixmap, &icon_pixmap);
- XtGetValues(toplevel, args, ONE);
- if (icon_pixmap == None) {
- XtSetArg(args[0], XtNiconPixmap,
- XCreateBitmapFromData(XtDisplay(toplevel),
- XtScreen(toplevel)->root,
- (char *)xload_bits,
- xload_width, xload_height));
- XtSetValues (toplevel, args, ONE);
- }
-
- if (resources.show_label) {
- pane = XtCreateManagedWidget ("paned", panedWidgetClass,
- toplevel, NULL, ZERO);
-
- label_wid = XtCreateManagedWidget ("label", labelWidgetClass,
- pane, NULL, ZERO);
-
- XtSetArg (args[0], XtNlabel, &label);
- XtGetValues(label_wid, args, ONE);
-
- if ( strcmp("label", label) == 0 ) {
- (void) XmuGetHostname (host, 255);
- XtSetArg (args[0], XtNlabel, host);
- XtSetValues (label_wid, args, ONE);
- }
-
- load_parent = pane;
- }
- else
- load_parent = toplevel;
-
- load = XtCreateManagedWidget ("load", stripChartWidgetClass,
- load_parent, NULL, ZERO);
-
- XtAddCallback(load, XtNgetValue, GetLoadPoint, NULL);
-
- XtRealizeWidget (toplevel);
- wm_delete_window = XInternAtom (XtDisplay(toplevel), "WM_DELETE_WINDOW",
- False);
- (void) XSetWMProtocols (XtDisplay(toplevel), XtWindow(toplevel),
- &wm_delete_window, 1);
- }
- XtAppMainLoop(app_con);
- }
-
- static unsigned long current_leds;
-
- static void
- ClearLights (dpy)
- Display *dpy;
- {
- XKeyboardControl cntrl;
-
- cntrl.led_mode = LedModeOff;
- XChangeKeyboardControl (dpy, KBLedMode, &cntrl);
- current_leds = 0;
- }
-
- static void
- SetLights (data, timer)
- XtPointer data;
- XtIntervalId *timer;
- {
- Widget toplevel;
- Display *dpy;
- double value;
- unsigned long new_leds, change, bit;
- int i;
- XKeyboardControl cntrl;
-
- toplevel = (Widget) data;
- dpy = XtDisplay (toplevel);
- GetLoadPoint (toplevel, (XtPointer) 0, (XtPointer) &value);
- new_leds = (1 << (int) (value + 0.1)) - 1;
- change = new_leds ^ current_leds;
- i = 1;
- bit = 1;
- while (current_leds != new_leds)
- {
- if (change & bit)
- {
- cntrl.led = i;
- cntrl.led_mode = new_leds & bit ? LedModeOn : LedModeOff;
- XChangeKeyboardControl (dpy, KBLed|KBLedMode, &cntrl);
- current_leds ^= bit;
- }
- i++;
- bit <<= 1;
- }
- XtAppAddTimeOut(XtWidgetToApplicationContext(toplevel), light_update,
- SetLights, data);
- }
-
- static void quit (w, event, params, num_params)
- Widget w;
- XEvent *event;
- String *params;
- Cardinal *num_params;
- {
- if (event->type == ClientMessage &&
- event->xclient.data.l[0] != wm_delete_window) {
- XBell (XtDisplay(w), 0);
- return;
- }
- if (resources.use_lights)
- ClearLights (XtDisplay (w));
- XtDestroyApplicationContext(XtWidgetToApplicationContext(w));
- exit (0);
- }
-