fspanel.c

/********************************************************
 ** F***ing Small Panel 0.7 Copyright (c) 2000-2001 By **
 ** Peter Zelezny <zed@linuxpower.org>                 **
 ** See file COPYING for license details.              **
 ********************************************************/

#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>

#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>

#ifdef HAVE_XPM
#include <X11/xpm.h>
#include "icon.xpm"
#endif

#include "fspanel.h"

/* you can edit these */
#define MAX_TASK_WIDTH 145
#define ICONWIDTH 16
#define ICONHEIGHT 16
#define WINHEIGHT 24
#define WINWIDTH (scr_width)
#define FONT_NAME "-*-lucida*-m*-r-*-*-12-*-*"

/* don't edit these */
#define TEXTPAD 6
#define left_arrow_x 25
#define right_arrow_x 50

Display *dd;
Window root_win;
Pixmap generic_icon;
Pixmap generic_mask;
GC fore_gc;
XFontStruct *xfs;
int scr_screen;
int scr_depth;
int scr_width;
int scr_height;
int text_y;
/*int time_width;*/

unsigned short cols[] = {
	0xd75c, 0xd75c, 0xd75c,		  /* 0. light gray */
	0xbefb, 0xbaea, 0xbefb,		  /* 1. mid gray */
	0xaefb, 0xaaea, 0xaefb,		  /* 2. dark gray */
	0xefbe, 0xefbe, 0xefbe,		  /* 3. white */
	0x8617, 0x8207, 0x8617,		  /* 4. darkest gray */
	0x0000, 0x0000, 0x0000		  /* 5. black */
};

#define PALETTE_COUNT (sizeof (cols) / sizeof (cols[0]) / 3)

unsigned long palette[PALETTE_COUNT];

char *atom_names[] = {
	"KWM_WIN_ICON",
	"_MOTIF_WM_HINTS",
	"_WIN_WORKSPACE",
	"_WIN_HINTS",
	"_WIN_LAYER",
	"_NET_CLIENT_LIST",
	"_WIN_CLIENT_LIST",
	"_WIN_WORKSPACE_COUNT",
	"_WIN_STATE",
	"WM_STATE"
};

#define ATOM_COUNT (sizeof (atom_names) / sizeof (atom_names[0]))

Atom atoms[ATOM_COUNT];

#define atom_KWM_WIN_ICON atoms[0]
#define atom__MOTIF_WM_HINTS atoms[1]
#define atom__WIN_WORKSPACE atoms[2]
#define atom__WIN_HINTS atoms[3]
#define atom__WIN_LAYER atoms[4]
#define atom__NET_CLIENT_LIST atoms[5]
#define atom__WIN_CLIENT_LIST atoms[6]
#define atom__WIN_WORKSPACE_COUNT atoms[7]
#define atom__WIN_STATE atoms[8]
#define atom_WM_STATE atoms[9]


void *
get_prop_data (Window win, Atom prop, Atom type, int *items)
{
	Atom type_ret;
	int format_ret;
	unsigned long items_ret;
	unsigned long after_ret;
	unsigned char *prop_data;

	prop_data = 0;

	XGetWindowProperty (dd, win, prop, 0, 0x7fffffff, False,
							  type, &type_ret, &format_ret, &items_ret,
							  &after_ret, &prop_data);
	if (items)
		*items = items_ret;

	return prop_data;
}

void
set_foreground (int index)
{
	XSetForeground (dd, fore_gc, palette[index]);
}

void
draw_line (taskbar *tb, int x, int y, int a, int b)
{
	XDrawLine (dd, tb->win, fore_gc, x, y, a, b);
}

void
fill_rect (taskbar *tb, int x, int y, int a, int b)
{
	XFillRectangle (dd, tb->win, fore_gc, x, y, a, b);
}

void
scale_icon (task *tk)
{
	int xx, yy, x, y, w, h, d, bw;
	Pixmap pix, mk = None;
	XGCValues gcv;
	GC mgc;

	XGetGeometry (dd, tk->icon, &pix, &x, &y, &w, &h, &bw, &d);
	pix = XCreatePixmap (dd, tk->win, ICONWIDTH, ICONHEIGHT, scr_depth);

	if (tk->mask != None)
	{
		mk = XCreatePixmap (dd, tk->win, ICONWIDTH, ICONHEIGHT, 1);
		gcv.subwindow_mode = IncludeInferiors;
		gcv.graphics_exposures = False;
		mgc = XCreateGC (dd, mk, GCGraphicsExposures | GCSubwindowMode, &gcv);
	}

	set_foreground (3);

	/* this is my simple & dirty scaling routine */
	for (y = ICONHEIGHT - 1; y >= 0; y--)
	{
		yy = (y * h) / ICONHEIGHT;
		for (x = ICONWIDTH - 1; x >= 0; x--)
		{
			xx = (x * w) / ICONWIDTH;
			if (d != scr_depth)
				XCopyPlane (dd, tk->icon, pix, fore_gc, xx, yy, 1, 1, x, y, 1);
			else
				XCopyArea (dd, tk->icon, pix, fore_gc, xx, yy, 1, 1, x, y);
			if (mk != None)
				XCopyArea (dd, tk->mask, mk, mgc, xx, yy, 1, 1, x, y);
		}
	}

	if (mk != None)
	{
		XFreeGC (dd, mgc);
		tk->mask = mk;
	}

	tk->icon = pix;
}

void
get_task_hinticon (task *tk)
{
	XWMHints *hin;

	tk->icon = None;
	tk->mask = None;

	hin = (XWMHints *) get_prop_data (tk->win, XA_WM_HINTS, XA_WM_HINTS, 0);
	if (hin)
	{
		if ((hin->flags & IconPixmapHint))
		{
			if ((hin->flags & IconMaskHint))
			{
				tk->mask = hin->icon_mask;
			}

			tk->icon = hin->icon_pixmap;
			tk->icon_copied = 1;
			scale_icon (tk);
		}
		XFree (hin);
	}

	if (tk->icon == None)
	{
		tk->icon = generic_icon;
		tk->mask = generic_mask;
	}
}

void
get_task_kdeicon (task *tk)
{
	unsigned long *data;

	data = get_prop_data (tk->win, atom_KWM_WIN_ICON, atom_KWM_WIN_ICON, 0);
	if (data)
	{
		tk->icon = data[0];
		tk->mask = data[1];
		XFree (data);
	}
}

int
find_desktop (Window win)
{
	int desk = 0;
	unsigned long *data;

	data = get_prop_data (win, atom__WIN_WORKSPACE, XA_CARDINAL, 0);
	if (data)
	{
		desk = *data;
		XFree (data);
	}
	return desk;
}

int
is_hidden (Window win)
{
	unsigned long *data;
	int ret = 0;

	data = get_prop_data (win, atom__WIN_HINTS, XA_CARDINAL, 0);
	if (data)
	{
		if ((*data) & WIN_HINTS_SKIP_TASKBAR)
			ret = 1;
		XFree (data);
	}

	return ret;
}

int
is_iconified (Window win)
{
	unsigned long *data;
	int ret = 0;

	data = get_prop_data (win, atom_WM_STATE, atom_WM_STATE, 0);
	if (data)
	{
		if (data[0] == IconicState)
			ret = 1;
		XFree (data);
	}
	return ret;
}

void
add_task (taskbar * tb, Window win, int focus)
{
	task *tk, *list;

	/* is this window on a different desktop? */
	if (tb->my_desktop != find_desktop (win) || is_hidden (win))
		return;

	tk = calloc (1, sizeof (task));
	tk->win = win;
	tk->focused = focus;
	tk->name = get_prop_data (win, XA_WM_NAME, XA_STRING, 0);
	tk->iconified = is_iconified (win);

	get_task_kdeicon (tk);
	if (tk->icon == None)
		get_task_hinticon (tk);

	XSelectInput (dd, win, PropertyChangeMask | FocusChangeMask |
					  StructureNotifyMask);

	/* now append it to our linked list */
	tb->num_tasks++;

	list = tb->task_list;
	if (!list)
	{
		tb->task_list = tk;
		return;
	}
	while (1)
	{
		if (!list->next)
		{
			list->next = tk;
			return;
		}
		list = list->next;
	}
}

void
gui_sync (void)
{
	XSync (dd, False);
}

void
set_prop (Window win, Atom at, long val)
{
	XChangeProperty (dd, win, at, XA_CARDINAL, 32,
						  PropModeReplace, (unsigned char *) &val, 1);
}

taskbar *
gui_create_taskbar (void)
{
	taskbar *tb;
	Window win;
	MWMHints mwm;
	XSizeHints size_hints;
	XWMHints wmhints;
	XSetWindowAttributes att;

	att.background_pixel = palette[0];
	att.event_mask = ButtonPressMask | ExposureMask;

	win = XCreateWindow (
								  /* display */ dd,
								  /* parent  */ root_win,
								  /* x       */ 0,
								  /* y       */ scr_height - WINHEIGHT,
								  /* width   */ WINWIDTH,
								  /* height  */ WINHEIGHT,
								  /* border  */ 0,
								  /* depth   */ CopyFromParent,
								  /* class   */ InputOutput,
								  /* visual  */ CopyFromParent,
								  /*value mask*/ CWBackPixel | CWEventMask,
								  /* attribs */ &att);

	/* don't let any windows cover fspanel */
	set_prop (win, atom__WIN_LAYER, 10);	/* WIN_LAYER_ABOVE_DOCK */

	set_prop (win, atom__WIN_STATE, WIN_STATE_STICKY |
				 WIN_STATE_FIXED_POSITION);

	set_prop (win, atom__WIN_HINTS, WIN_HINTS_SKIP_FOCUS |
				 WIN_HINTS_SKIP_WINLIST |
				 WIN_HINTS_SKIP_TASKBAR | WIN_HINTS_DO_NOT_COVER);

	/* borderless motif hint */
	memset (&mwm, 0, sizeof (mwm));
	mwm.flags = MWM_HINTS_DECORATIONS;
	XChangeProperty (dd, win, atom__MOTIF_WM_HINTS,
							atom__MOTIF_WM_HINTS, 32, PropModeReplace,
							(unsigned char *) &mwm, sizeof (MWMHints) / 4);

	/* make sure the WM obays our window position */
	size_hints.flags = PPosition;
	/*XSetWMNormalHints (dd, win, &size_hints);*/
	XChangeProperty (dd, win, XA_WM_NORMAL_HINTS,
							XA_WM_SIZE_HINTS, 32, PropModeReplace,
							(unsigned char *) &size_hints, sizeof (XSizeHints) / 4);

	/* make our window unfocusable */
	wmhints.flags = InputHint;
	wmhints.input = 0;
	/*XSetWMHints (dd, win, &wmhints);*/
	XChangeProperty (dd, win, XA_WM_HINTS,
							XA_WM_HINTS, 32, PropModeReplace,
							(unsigned char *) &wmhints, sizeof (XWMHints) / 4);

	XMapWindow (dd, win);

	tb = calloc (1, sizeof (taskbar));
	tb->win = win;

	return tb;
}

void
gui_init (void)
{
	XGCValues gcv;
	XColor xcl;
	int i, j;
	char *fontname;

	i = j = 0;
	do
	{
		xcl.red = cols[i];
		i++;
		xcl.green = cols[i];
		i++;
		xcl.blue = cols[i];
		i++;
		XAllocColor (dd, DefaultColormap (dd, scr_screen), &xcl);
		palette[j] = xcl.pixel;
		j++;
	}
	while (j < PALETTE_COUNT);

	fontname = FONT_NAME;
	do
	{
		xfs = XLoadQueryFont (dd, fontname);
		fontname = "fixed";
	}
	while (!xfs);

	/*time_width = XTextWidth (xfs, "88:88", 5); */
#define time_width (35)
	text_y = xfs->ascent + ((WINHEIGHT - xfs->ascent) / 2);

	gcv.font = xfs->fid;
	gcv.graphics_exposures = False;
	fore_gc = XCreateGC (dd, root_win, GCFont | GCGraphicsExposures, &gcv);

#ifdef HAVE_XPM
	XpmCreatePixmapFromData (dd, root_win, icon_xpm, &generic_icon,
									 &generic_mask, NULL);
#else
	generic_icon = 0;
#endif
}

void
gui_draw_vline (taskbar * tb, int x)
{
	set_foreground (4);
	draw_line (tb, x, 0, x, WINHEIGHT);
	set_foreground (3);
	draw_line (tb, x + 1, 0, x + 1, WINHEIGHT);
}

void
gui_draw_task (taskbar * tb, task * tk)
{
	int len;
	int x = tk->pos_x;
	int taskw = tk->width;

	if (!tk->name)
		return;

	gui_draw_vline (tb, x);

/*set_foreground (3); *//* it's already 3 from gui_draw_vline() */
	draw_line (tb, x + 1, 0, x + taskw, 0);

	set_foreground (1);
	draw_line (tb, x + 1, WINHEIGHT - 1, x + taskw, WINHEIGHT - 1);

	if (tk->focused)
	{
		x++;
		/*set_foreground (1);*/		  /* mid gray */
		fill_rect (tb, x + 3, 3, taskw - 5, WINHEIGHT - 6);
		set_foreground (3);		  /* white */
		draw_line (tb, x + 2, WINHEIGHT - 2, x + taskw - 2, WINHEIGHT - 2);
		draw_line (tb, x + taskw - 2, 2, x + taskw - 2, WINHEIGHT - 2);
		set_foreground (0);
		draw_line (tb, x + 1, 2, x + 1, WINHEIGHT - 2);
		set_foreground (4);		  /* darkest gray */
		draw_line (tb, x + 2, 2, x + taskw - 2, 2);
		draw_line (tb, x + 2, 2, x + 2, WINHEIGHT - 3);
	} else
	{
		set_foreground (0);		  /* mid gray */
		fill_rect (tb, x + 2, 1, taskw - 1, WINHEIGHT - 2);
	}

	{
		register int text_x = x + TEXTPAD + TEXTPAD + ICONWIDTH;

		/* check how many chars can fit */
		len = strlen (tk->name);
		while (XTextWidth (xfs, tk->name, len) >= taskw - (text_x - x) - 2
				 && len > 0)
			len--;

		if (tk->iconified)
		{
			/* draw task's name dark (iconified) */
			set_foreground (3);
			XDrawString (dd, tb->win, fore_gc, text_x, text_y + 1, tk->name,
							 len);
			set_foreground (4);
		} else
		{
			set_foreground (5);
		}

		/* draw task's name here */
		XDrawString (dd, tb->win, fore_gc, text_x, text_y, tk->name, len);
	}

#ifndef HAVE_XPM
	if (!tk->icon)
		return;
#endif

	/* draw the task's icon */
	XSetClipMask (dd, fore_gc, tk->mask);
	XSetClipOrigin (dd, fore_gc, x + TEXTPAD, (WINHEIGHT - ICONHEIGHT) / 2);
	XCopyArea (dd, tk->icon, tb->win, fore_gc, 0, 0, ICONWIDTH, ICONHEIGHT,
				  x + TEXTPAD, (WINHEIGHT - ICONHEIGHT) / 2);
	XSetClipMask (dd, fore_gc, None);
}

void
gui_draw_clock (taskbar * tb)
{
	char *time_str;
	time_t now;
	int width, old_x, x = WINWIDTH - time_width - (TEXTPAD * 4);

	old_x = x;

	width = WINWIDTH - x - 2;

	now = time (0);
	time_str = ctime (&now) + 11;

	gui_draw_vline (tb, x);
	x += TEXTPAD;

/*set_foreground (3); *//* white *//* it's already 3 from gui_draw_vline() */
	draw_line (tb, x + 1, WINHEIGHT - 2, old_x + width - TEXTPAD,
				  WINHEIGHT - 2);
	draw_line (tb, old_x + width - TEXTPAD, 2, old_x + width - TEXTPAD,
				  WINHEIGHT - 2);

	set_foreground (1);			  /* mid gray */
	fill_rect (tb, x + 1, 2, width - (TEXTPAD * 2) - 1, WINHEIGHT - 4);

	set_foreground (4);			  /* darkest gray */
	draw_line (tb, x, 2, x + width - (TEXTPAD * 2) - 1, 2);
	draw_line (tb, x, 2, x, WINHEIGHT - 2);

	set_foreground (5);
	XDrawString (dd, tb->win, fore_gc, x + TEXTPAD - 1, text_y, 
						time_str, 5);
}

void
draw_dot (Window win, int x, int y)
{
	set_foreground (4);
	XDrawPoint (dd, win, fore_gc, x, y);
	set_foreground (3);
	XDrawPoint (dd, win, fore_gc, x + 1, y + 1);
}

void
draw_grill (Window win, int x)
{
	int y = 0;
	while (y < WINHEIGHT - 4)
	{
		y += 3;
		draw_dot (win, x + 3, y);
		draw_dot (win, x, y);
	}
}

void
draw_up_triangle (taskbar *tb)
{
	fill_rect (tb, left_arrow_x + 2, (WINHEIGHT - 4) / 2 + 1, 3, 3);
	draw_line (tb, left_arrow_x, (WINHEIGHT - 4) / 2 + 3, left_arrow_x + 3, (WINHEIGHT - 4) / 2);
	draw_line (tb, left_arrow_x + 3, (WINHEIGHT - 4) / 2, left_arrow_x + 6, (WINHEIGHT - 4) / 2 + 3);
	draw_line (tb, left_arrow_x + 1, (WINHEIGHT - 4) / 2 + 3, left_arrow_x + 5, (WINHEIGHT - 4) / 2 + 3);
}

void
draw_down_triangle (taskbar *tb)
{
	draw_line (tb, right_arrow_x, (WINHEIGHT - 4) / 2, right_arrow_x + 3, (WINHEIGHT - 4) / 2 + 3);
	draw_line (tb, right_arrow_x, (WINHEIGHT - 4) / 2, right_arrow_x + 4, (WINHEIGHT - 4) / 2 + 2);
	draw_line (tb, right_arrow_x, (WINHEIGHT - 4) / 2, right_arrow_x + 5, (WINHEIGHT - 4) / 2 + 1);
	draw_line (tb, right_arrow_x, (WINHEIGHT - 4) / 2, right_arrow_x + 6, (WINHEIGHT - 4) / 2);
}

void
gui_draw_taskbar (taskbar * tb)
{
	task *tk;
	int x, width, taskw;
	int under = 0;

	set_foreground (5);	/* black */
	draw_up_triangle (tb);
	draw_down_triangle (tb);

	width = WINWIDTH - 80 - time_width - (TEXTPAD * 4);
	x = 80;

	if (tb->num_tasks == 0)
		goto clear;

	taskw = width / tb->num_tasks;
	if (taskw > MAX_TASK_WIDTH)
	{
		taskw = MAX_TASK_WIDTH;
		under = 1;
	}

	tk = tb->task_list;
	while (tk)
	{
		tk->pos_x = x;
		tk->width = taskw - 1;
		gui_draw_task (tb, tk);
		x += taskw;
		tk = tk->next;
	}

	if (under)
	{
clear:
		gui_draw_vline (tb, x);
		set_foreground (0);
		fill_rect (tb, x + 2, 0, WINWIDTH, WINHEIGHT);
	}

	gui_draw_clock (tb);

	gui_draw_vline (tb, 8);
	gui_draw_vline (tb, 74);

	draw_grill (tb->win, 2);
	draw_grill (tb->win, WINWIDTH - 6);
}

task *
find_task (taskbar * tb, Window win)
{
	task *list = tb->task_list;
	while (list)
	{
		if (list->win == win)
			return list;
		list = list->next;
	}
	return 0;
}

void
del_task (taskbar * tb, Window win)
{
	task *next, *prev = 0, *list = tb->task_list;

	while (list)
	{
		next = list->next;
		if (list->win == win)
		{
			/* unlink and free this task */
			tb->num_tasks--;
			if (list->icon_copied)
			{
				XFreePixmap (dd, list->icon);
				if (list->mask != None)
					XFreePixmap (dd, list->mask);
			}
			if (list->name)
				XFree (list->name);
			free (list);
			if (prev == 0)
				tb->task_list = next;
			else
				prev->next = next;
			return;
		}
		prev = list;
		list = next;
	}
}

void
taskbar_read_clientlist (taskbar * tb)
{
	Window *win, focus_win;
	int num, i, rev, desk, new_desk = 0;
	task *list, *next;

	desk = find_desktop (root_win);
	if (desk != tb->my_desktop)
	{
		new_desk = 1;
		tb->my_desktop = desk;
	}

	XGetInputFocus (dd, &focus_win, &rev);

	/* try unified window spec first */
	win = get_prop_data (root_win, atom__NET_CLIENT_LIST, XA_WINDOW, &num);
	if (!win)
	{
		/* failed, let's try gnome */
		win = get_prop_data (root_win, atom__WIN_CLIENT_LIST, XA_CARDINAL, &num);
		if (!win)
			return;
	}

	/* remove windows that arn't in the _WIN_CLIENT_LIST anymore */
	list = tb->task_list;
	while (list)
	{
		list->focused = (focus_win == list->win);
		next = list->next;

		if (!new_desk)
			for (i = num - 1; i >= 0; i--)
				if (list->win == win[i])
					goto dontdel;
		del_task (tb, list->win);
dontdel:

		list = next;
	}

	/* add any new windows */
	for (i = 0; i < num; i++)
	{
		if (!find_task (tb, win[i]))
			add_task (tb, win[i], (win[i] == focus_win));
	}

	XFree (win);
}

void
move_taskbar (taskbar * tb)
{
	int x, y;

	x = y = 0;

	if (tb->hidden)
		x = WINWIDTH - TEXTPAD;

	if (!tb->at_top)
		y = scr_height - WINHEIGHT;

	XMoveWindow (dd, tb->win, x, y);
}

void
switch_desk (taskbar * tb, int rel)
{
	XClientMessageEvent xev;
	unsigned long *data;
	int want = tb->my_desktop + rel;

	if (want < 0)
		return;

	data = get_prop_data (root_win, atom__WIN_WORKSPACE_COUNT, XA_CARDINAL, 0);
	if (data)
	{
		register unsigned long max_desks = *data;
		XFree (data);
		if (max_desks <= want)
			return;
	}

	xev.type = ClientMessage;
	xev.window = root_win;
	xev.message_type = atom__WIN_WORKSPACE;
	xev.format = 32;
	xev.data.l[0] = want;
	XSendEvent (dd, root_win, False, SubstructureNotifyMask, (XEvent *) &xev);
}

void
handle_press (taskbar * tb, int x, int y)
{
	task *tk;

	if (y > 3 && y < WINHEIGHT - 3)
	{
		if (x >= right_arrow_x && x < right_arrow_x + 9)
		{
			switch_desk (tb, +1);
			return;
		}

		if (x >= left_arrow_x && x < left_arrow_x + 9)
		{
			switch_desk (tb, -1);
			return;
		}
	}

	/* clicked left grill */
	if (x < 6)
	{
		if (tb->hidden)
			tb->hidden = 0;
		else
			tb->at_top = !tb->at_top;
		move_taskbar (tb);
		return;
	}

	/* clicked right grill */
	if (x + TEXTPAD > WINWIDTH)
	{
		tb->hidden = !tb->hidden;
		move_taskbar (tb);
		return;
	}

	tk = tb->task_list;
	while (tk)
	{
		if (x > tk->pos_x && x < tk->pos_x + tk->width)
		{
			if (tk->iconified)
			{
				tk->iconified = 0;
				tk->focused = 1;
				XMapWindow (dd, tk->win);
			} else
			{
				if (tk->focused)
				{
					tk->iconified = 1;
					tk->focused = 0;
					XIconifyWindow (dd, tk->win, scr_screen);
				} else
				{
					tk->focused = 1;
					XRaiseWindow (dd, tk->win);
					XSetInputFocus (dd, tk->win, RevertToNone, CurrentTime);
				}
			}
			gui_sync ();
			gui_draw_task (tb, tk);
		} else
		{
			if (tk->focused)
			{
				tk->focused = 0;
				gui_draw_task (tb, tk);
			}
		}

		tk = tk->next;
	}
}

void
handle_focusin (taskbar * tb, Window win)
{
	task *tk;

	tk = tb->task_list;
	while (tk)
	{
		if (tk->focused)
		{
			if (tk->win != win)
			{
				tk->focused = 0;
				gui_draw_task (tb, tk);
			}
		} else
		{
			if (tk->win == win)
			{
				tk->focused = 1;
				gui_draw_task (tb, tk);
			}
		}
		tk = tk->next;
	}
}

void
handle_propertynotify (taskbar * tb, Window win, Atom at)
{
	task *tk;

	if (win == root_win)
	{
		if (at == atom__NET_CLIENT_LIST ||
			 at == atom__WIN_CLIENT_LIST ||
			 at == atom__WIN_WORKSPACE)
		{
			taskbar_read_clientlist (tb);
			gui_draw_taskbar (tb);
		}
		return;
	}

	tk = find_task (tb, win);
	if (!tk)
		return;

	if (at == XA_WM_NAME)
	{
		/* window's title changed */
		if (tk->name)
			XFree (tk->name);
		tk->name = get_prop_data (tk->win, XA_WM_NAME, XA_STRING, 0);
		gui_draw_task (tb, tk);
	} else if (at == atom_WM_STATE)
	{
		/* iconified state changed? */
		if (is_iconified (tk->win) != tk->iconified)
		{
			tk->iconified = !tk->iconified;
			gui_draw_task (tb, tk);
		}
	} else if (at == XA_WM_HINTS)
	{
		/* some windows set their WM_HINTS icon after mapping */
		if (tk->icon == generic_icon)
		{
			get_task_hinticon (tk);
			gui_draw_task (tb, tk);
		}
	}
}

void
handle_error (Display * d, XErrorEvent * ev)
{
}

int
#ifdef NOSTDLIB
_start (void)
#else
main (int argc, char *argv[])
#endif
{
	taskbar *tb;
	XEvent ev;
	fd_set fd;
	struct timeval tv;
	int xfd;
	time_t now;
	struct tm *lt;

	dd = XOpenDisplay (NULL);
	if (!dd)
		return 0;
	scr_screen = DefaultScreen (dd);
	scr_depth = DefaultDepth (dd, scr_screen);
	scr_height = DisplayHeight (dd, scr_screen);
	scr_width = DisplayWidth (dd, scr_screen);
	root_win = RootWindow (dd, scr_screen);

	/* helps us catch windows closing/opening */
	XSelectInput (dd, root_win, PropertyChangeMask);

	XSetErrorHandler ((XErrorHandler) handle_error);

	XInternAtoms (dd, atom_names, ATOM_COUNT, False, atoms);

	gui_init ();
	tb = gui_create_taskbar ();
	xfd = ConnectionNumber (dd);
	gui_sync ();

	while (1)
	{
		now = time (0);
		lt = gmtime (&now);
		tv.tv_usec = 0;
		tv.tv_sec = 60 - lt->tm_sec;
		FD_ZERO (&fd);
		FD_SET (xfd, &fd);
		if (select (xfd + 1, &fd, 0, 0, &tv) == 0)
			gui_draw_clock (tb);

		while (XPending (dd))
		{
			XNextEvent (dd, &ev);
			switch (ev.type)
			{
			case ButtonPress:
				if (ev.xbutton.button == 1)
					handle_press (tb, ev.xbutton.x, ev.xbutton.y);
				break;
			case DestroyNotify:
				del_task (tb, ev.xdestroywindow.window);
				/* fall through */
			case Expose:
				gui_draw_taskbar (tb);
				break;
			case PropertyNotify:
				handle_propertynotify (tb, ev.xproperty.window,
											  ev.xproperty.atom);
				break;
			case FocusIn:
				handle_focusin (tb, ev.xfocus.window);
				break;
			/*default:
				   printf ("unknown evt type: %d\n", ev.type);*/
			}
		}
	}

	/*XCloseDisplay (dd);

   return 0;*/
}