/* $Id$
* $URL$
*
* new layouter framework
*
* Copyright (C) 2003 Michael Reinelt <michael@reinelt.co.at>
* Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
*
* This file is part of LCD4Linux.
*
* LCD4Linux is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* LCD4Linux is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
/*
* exported functions:
*
* layout_init (char *section)
* initializes the layouter
*
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "debug.h"
#include "cfg.h"
#include "widget.h"
#include "layout.h"
#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif
/* rename old-style widgets without layer */
static int layout_migrate(const char *section)
{
char *list, *old, *new;
int row, col;
/* get a list of all keys in this section */
list = cfg_list(section);
/* map to lower char for scanf() */
for (old = list; *old != '\0'; old++)
*old = tolower(*old);
old = list;
while (old != NULL) {
char *p;
int i, n;
/* list is delimited by | */
while (*old == '|')
old++;
if ((p = strchr(old, '|')) != NULL)
*p = '\0';
/* row/col widgets w/o layer */
i = sscanf(old, "row%d.col%d%n", &row, &col, &n);
if (i == 2 && old[n] == '\0') {
/* prepare new key */
/* strlen("Layer:1.")=8 */
new = malloc(strlen(old) + 9);
strcpy(new, "Layer:1.");
strcat(new, old);
debug("%s: migrating '%s' to '%s'", section, old, new);
if (cfg_rename(section, old, new) < 0) {
error("WARNING: %s: both keys '%s' and '%s' may not exist!", section, pre { line-height: 125%; margin: 0; }
td.linenos pre { color: #000000; background-color: #f0f0f0; padding: 0 5px 0 5px; }
span.linenos { color: #000000; background-color: #f0f0f0; padding: 0 5px 0 5px; }
td.linenos pre.special { color: #000000; background-color: #ffffc0; padding: 0 5px 0 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding: 0 5px 0 5px; }
.highlight .hll { background-color: #ffffcc }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long *//* $Id: XWindow.c,v 1.35 2003/10/05 17:58:50 reinelt Exp $
*
* X11 Driver for LCD4Linux
*
* Copyright 2000 Herbert Rosmanith <herp@widsau.idv.uni-linz.ac.at>
*
* This file is part of LCD4Linux.
*
* LCD4Linux is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* LCD4Linux is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* $Log: XWindow.c,v $
* Revision 1.35 2003/10/05 17:58:50 reinelt
* libtool junk; copyright messages cleaned up
*
* Revision 1.34 2003/09/10 14:01:53 reinelt
* icons nearly finished\!
*
* Revision 1.33 2003/09/09 06:54:43 reinelt
* new function 'cfg_number()'
*
* Revision 1.32 2003/07/24 04:48:09 reinelt
* 'soft clear' needed for virtual rows
*
* Revision 1.31 2003/04/12 16:23:10 reinelt
* small glitch in XWindow.c (thanks to Moe Wibble)
*
* Revision 1.30 2003/02/22 07:53:10 reinelt
* cfg_get(key,defval)
*
* Revision 1.29 2003/02/18 06:13:44 reinelt
* X11 driver fixes and cleanup
*
* Revision 1.28 2003/02/17 06:06:12 reinelt
* small bug in X11 driver: omit pixel gap between cahracters
*
* Revision 1.27 2002/08/19 04:41:20 reinelt
* introduced bar.c, moved bar stuff from display.h to bar.h
*
* Revision 1.26 2001/08/05 17:13:29 reinelt
*
* cleaned up inlude of sys/time.h and time.h
*
* Revision 1.25 2001/03/16 16:40:17 ltoetsch
* implemented time bar
*
* Revision 1.24 2001/03/01 11:08:16 reinelt
*
* reworked configure to allow selection of drivers
*
* Revision 1.23 2001/02/26 00:33:37 herp
* fixed X11 signal handler
*
* Revision 1.22 2001/02/13 09:00:13 reinelt
*
* prepared framework for GPO's (general purpose outputs)
*
* Revision 1.21 2000/08/10 18:42:20 reinelt
*
* fixed some bugs with the new syslog code
*
* Revision 1.20 2000/08/10 09:44:09 reinelt
*
* new debugging scheme: error(), info(), debug()
* uses syslog if in daemon mode
*
* Revision 1.19 2000/08/09 09:50:29 reinelt
*
* opened 0.98 development
* removed driver-specific signal-handlers
* added 'quit'-function to driver structure
* added global signal-handler
*
* Revision 1.18 2000/05/02 23:07:48 herp
* Crystalfontz initial coding
*
* Revision 1.17 2000/04/05 05:58:36 reinelt
*
* fixed bug in XWindow.c: union semun isn't defined with glibc-2.1
*
* Revision 1.16 2000/04/03 23:53:23 herp
* fixed a bug that caused pixel-errors ("fliegendreck") under high load
*
* Revision 1.15 2000/04/03 04:01:31 reinelt
*
* if 'gap' is specified as -1, a gap of (pixelsize+pixelgap) is selected automatically
*
* Revision 1.14 2000/04/02 22:07:10 herp
* fixded a bug that occasionally caused Xlib errors
*
* Revision 1.13 2000/04/01 22:40:42 herp
* geometric correction (too many pixelgaps)
* lcd4linux main should return int, not void
*
* Revision 1.12 2000/04/01 19:33:45 herp
*
* colors in format \#RRGGBB in config-file now understood
*
* Revision 1.11 2000/04/01 16:22:38 reinelt
*
* bug that caused a segfault in processor.c fixed (thanks to herp)
*
* Revision 1.10 2000/03/31 01:42:11 herp
*
* semaphore bug fixed
*
* Revision 1.9 2000/03/30 16:46:57 reinelt
*
* configure now handles '--with-x' and '--without-x' correct
*
* Revision 1.8 2000/03/28 08:48:33 reinelt
*
* README.X11 added
*
* Revision 1.7 2000/03/28 07:22:15 reinelt
*
* version 0.95 released
* X11 driver up and running
* minor bugs fixed
*
*/
/*
*
* exported fuctions:
*
* struct LCD XWindow[]
*
*/
/*
* Mon Feb 26 02:07:52 MET 2001 fixed sighandler
* Tue Apr 4 02:37:38 MET 2000 fixed a bug that caused pixelerrors under h/load
* Sun Apr 2 22:07:10 MET 2000 fixed a bug that occasionally caused Xlib error
* Sun Apr 2 01:32:48 MET 2000 geometric correction (too many pixelgaps)
* Sat Apr 1 22:18:04 MET 2000 colors in format \#RRGGBB in config-file
* Fri Mar 31 01:42:11 MET 2000 semaphore bug fixed
* Sun Mar 26 15:28:23 MET 2000 various rewrites
* Sat Mar 25 23:58:19 MET 2000 use generic pixmap driver
* Thu Mar 23 01:05:07 MET 2000 multithreading, synchronization
* Tue Mar 21 22:22:03 MET 2000 initial coding
*
*/
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/ipc.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <unistd.h>
#include <signal.h>
#include "debug.h"
#include "cfg.h"
#include "display.h"
#include "bar.h"
#include "icon.h"
#include "pixmap.h"
/* glibc 2.1 requires defining semun ourselves */
#ifdef _SEM_SEMUN_UNDEFINED
union semun {
int val;
struct semid_ds *buf;
unsigned short int *array;
struct seminfo *__buf;
};
#endif
static LCD Lcd;
static Display *dp;
static int sc;
static Window w,rw;
static Visual *vi;
static int dd;
static Colormap cm;
static GC gc,gcb,gch;
static XColor co[3];
static Pixmap pmback;
static unsigned char *LCDpixmap2;
static char *rgbfg,*rgbbg,*rgbhg;
static int pixel=-1; /*pointsize in pixel*/
static int pgap=0; /*gap between points */
static int rgap=0; /*row gap between lines*/
static int cgap=0; /*column gap between characters*/
static int border=0; /*window border*/
static int rows=-1,cols=-1; /*rows+cols without background*/
static int xres=-1,yres=-1; /*xres+yres (same as self->...)*/
static int icons; /* number of user-defined icons */
static int dimx,dimy; /*total window dimension in pixel*/
static int boxw,boxh; /*box width, box height*/
static int async_update(); /*PROTO*/
static pid_t async_updater_pid=1;
static int semid=-1;
static int shmid=-1;
static int ppid; /*parent pid*/
static void acquire_lock()
{
struct sembuf sembuf;
sembuf.sem_num=0;
sembuf.sem_op=-1;
sembuf.sem_flg=0;
semop(semid,&sembuf,1); /* get mutex */
}
static void release_lock()
{
struct sembuf sembuf;
sembuf.sem_num=0;
sembuf.sem_op=1;
sembuf.sem_flg=0;
semop(semid,&sembuf,1); /* free mutex */
}
static void semcleanup()
{
union semun arg;
if (semid>-1) semctl(semid,0,IPC_RMID,arg);
}
static void shmcleanup()
{
if (shmid>-1) shmctl(shmid,IPC_RMID,NULL);
}
static void quit_updater()
{
int i;
if (async_updater_pid>1) {
i=async_updater_pid;
async_updater_pid=1;
kill(i,9);
waitpid(i,&i,0);
}
}
static void sig_updater(int sig)
{
kill(ppid,sig);
exit(0);
}
static void init_signals()
{
unsigned int ignsig=(1<<SIGBUS)|(1<<SIGFPE)|(1<<SIGSEGV)|
(1<<SIGTSTP)|(1<<SIGCHLD)|(1<<SIGCONT)|
(1<<SIGTTIN)|(1<<SIGWINCH);
int i;
for(i=0;i<NSIG;i++)
if (((1<<i)&ignsig)==0)
signal(i,sig_updater);
}
static int init_shm(int nbytes,unsigned char **buf)
{
shmid=shmget(IPC_PRIVATE,nbytes,SHM_R|SHM_W);
if (shmid==-1) {
error ("X11: shmget() failed: %s", strerror(errno));
return -1;
}
*buf=shmat(shmid,NULL,0);
if (*buf==NULL) {
error ("X11: shmat() failed: %s", strerror(errno));
return -1;
}
return 0;
}
/* acording to SUN-Solaris man-pages: */
#define SEM_ALTER 0200
static int init_thread(int bufsiz)
{
union semun semun;
semid=semget(IPC_PRIVATE,1,SEM_ALTER);
if (semid==-1) {
error ("X11: semget() failed: %s", strerror(errno));
return -1;
}
semun.val=1;
semctl(semid,0,SETVAL,semun);
ppid=getpid();
switch(async_updater_pid=fork()) {
case -1:
error ("X11: fork() failed: %s", strerror(errno));
return -1;
case 0:
async_update();
error ("X11: async_update failed");
kill(ppid,SIGTERM);
exit(-1);
default:
break;
}
signal(SIGCHLD,quit_updater);
atexit(quit_updater);
return 0;
}
static int init_x(int rows,int cols,int xres,int yres)
{
XSetWindowAttributes wa;
XSizeHints size_hints;
XColor co_dummy;
XEvent ev;
if ((dp=XOpenDisplay(NULL))==NULL) {
error ("X11: can't open display");
return -1;
}
sc=DefaultScreen(dp);
gc=DefaultGC(dp,sc);
vi=DefaultVisual(dp,sc);
dd=DefaultDepth(dp,sc);
rw=DefaultRootWindow(dp);
cm=DefaultColormap(dp,sc);
if (XAllocNamedColor(dp,cm,rgbfg,&co[0],&co_dummy)==False) {
error ("X11: can't alloc foreground color '%s'",
rgbfg);
return -1;
}
if (XAllocNamedColor(dp,cm,rgbbg,&co[1],&co_dummy)==False) {
error ("X11: can't alloc background color '%s'",
rgbbg);
return -1;
}
if (XAllocNamedColor(dp,cm,rgbhg,&co[2],&co_dummy)==False) {
error ("X11: can't alloc halfground color '%s'",
rgbhg);
return -1;
}
boxw=xres*pixel+(xres-1)*pgap+cgap;
boxh=yres*pixel+(yres-1)*pgap+rgap;
dimx=cols*xres*pixel+(cols*xres-1)*pgap+(cols-1)*cgap;
dimy=rows*yres*pixel+(rows*yres-1)*pgap+(rows-1)*rgap;
wa.event_mask=ExposureMask;
w=XCreateWindow(dp,rw,0,0,dimx+2*border,dimy+2*border,0,0,
InputOutput,vi,CWEventMask,&wa);
pmback=XCreatePixmap(dp,w,dimx,dimy,dd);
size_hints.min_width=size_hints.max_width=dimx+2*border;
size_hints.min_height=size_hints.max_height=dimy+2*border;
size_hints.flags=PPosition|PSize|PMinSize|PMaxSize;
XSetWMProperties(dp,w,NULL,NULL,NULL,0,&size_hints,NULL,NULL);
XSetForeground(dp,gc,co[0].pixel);
XSetBackground(dp,gc,co[1].pixel);
gcb=XCreateGC(dp,w,0,NULL);
XSetForeground(dp,gcb,co[1].pixel);
XSetBackground(dp,gcb,co[0].pixel);
gch=XCreateGC(dp,w,0,NULL);
XSetForeground(dp,gch,co[2].pixel);
XSetBackground(dp,gch,co[0].pixel);
XFillRectangle(dp,pmback,gcb,0,0,dimx,dimy);
XSetWindowBackground(dp,w,co[1].pixel);
XClearWindow(dp,w);
XStoreName(dp,w,"XLCD4Linux");
XMapWindow(dp,w);
XFlush(dp);
for(;;) {
XNextEvent(dp,&ev);
if (ev.type==Expose && ev.xexpose.count==0)
break;
}
return 0;
}
int xlcdinit(LCD *Self)
{
char *s;
if (sscanf(s=cfg_get("size","20x4"),"%dx%d",&cols,&rows)!=2
|| rows<1 || cols<1) {
error ("X11: bad size '%s'",s);
return -1;
}
if (sscanf(s=cfg_get("font","5x8"),"%dx%d",&xres,&yres)!=2
|| xres<5 || yres>10) {
error ("X11: bad font '%s'",s);
return -1;
}
if (sscanf(s=cfg_get("pixel","4+1"),"%d+%d",&pixel,&pgap)!=2
|| pixel<1 || pgap<0) {
error ("X11: bad pixel '%s'",s);
return -1;
}
if (sscanf(s=cfg_get("gap","-1x-1"),"%dx%d",&cgap,&rgap)!=2
|| cgap<-1 || rgap<-1) {
error ("X11: bad gap '%s'",s);
return -1;
}
if (rgap<0) rgap=pixel+pgap;
if (cgap<0) cgap=pixel+pgap;
if (cfg_number("border", 0, 0, 1000000, &border)<0) return -1;
rgbfg=cfg_get("foreground","#000000");
rgbbg=cfg_get("background","#80d000");
rgbhg=cfg_get("halfground","#70c000");
if (*rgbfg=='\\') rgbfg++;
if (*rgbbg=='\\') rgbbg++;
if (*rgbhg=='\\') rgbhg++;
if (pix_init(rows,cols,xres,yres)==-1) return -1;
if (cfg_number("Icons", 0, 0, 8, &icons) < 0) return -1;
if (icons>0) {
info ("allocating %d icons", icons);
icon_init(rows, cols, xres, yres, 8, icons, pix_icon);
}
if (init_x(rows,cols,xres,yres)==-1) return -1;
init_signals();
if (init_shm(rows*cols*xres*yres,&LCDpixmap2)==-1) return -1;
memset(LCDpixmap2,0xff,rows*yres*cols*xres);
if (init_thread(rows*cols*xres*yres)==-1) return -1;
Self->rows=rows;
Self->cols=cols;
Self->xres=xres;
Self->yres=yres;
Self->icons=icons;
Lcd=*Self;
pix_clear();
return 0;
}
int xlcdclear(int full)
{
return pix_clear();
}
int xlcdput(int row,int col, char *text)
{
return pix_put(row,col,text);
}
int xlcdbar(int type, int row, int col, int max, int len1, int len2)
{
return pix_bar(type,row,col,max,len1,len2);
}
int xlcdicon (int num, int seq, int row, int col)
{
return icon_draw (num, seq, row, col);
}
int xlcdflush() {
int dirty;
int row,col;
acquire_lock();
dirty=0;
for(row=0;row<rows*yres;row++) {
int y=border+(row/yres)*rgap+row*(pixel+pgap);
for(col=0;col<cols*xres;col++) {
int x=border+(col/xres)*cgap+col*(pixel+pgap);
int p=row*cols*xres+col;
if (LCDpixmap[p]^LCDpixmap2[p]) {
XFillRectangle(dp,w,LCDpixmap[p]?gc:gch,x,y,pixel,pixel);
LCDpixmap2[p]=LCDpixmap[p];
dirty=1;
}
}
}
if (dirty) XSync(dp,False);
release_lock();
return 0;
}
int xlcdquit(void)
{
semcleanup();
shmcleanup();
quit_updater();
return 0;
}
/*
* this one should only be called from the updater-thread
* no user serviceable parts inside
*/
static void update(int x,int y,int width,int height)
{
/*
* theory of operation:
* instead of the old, fully-featured but complicated update
* region calculation, we do an update of the whole display,
* but check before every pixel if the pixel region is inside
* the update region.
*/
int x0, y0;
int x1, y1;
int row, col;
int dirty;
x0=x-pixel;
y0=y-pixel;
x1=x+pixel+width;
y1=y+pixel+height;
dirty=0;
for(row=0;row<rows*yres;row++) {
int y=border+(row/yres)*rgap+row*(pixel+pgap);
if (y<y0 || y>y1) continue;
for(col=0;col<cols*xres;col++) {
int x=border+(col/xres)*cgap+col*(pixel+pgap);
int p;
if (x<x0 || x>x1) continue;
p=row*cols*xres+col;
XFillRectangle(dp,w,LCDpixmap2[p]?gc:gch,x,y,pixel,pixel);
dirty=1;
}
}
if (dirty) XSync(dp,False);
}
static int async_update()
{
XSetWindowAttributes wa;
XEvent ev;
if ((dp=XOpenDisplay(NULL))==NULL)
return -1;
wa.event_mask=ExposureMask;
XChangeWindowAttributes(dp,w,CWEventMask,&wa);
for(;;) {
XWindowEvent(dp,w,ExposureMask,&ev);
if (ev.type==Expose) {
acquire_lock();
update(ev.xexpose.x,ev.xexpose.y,
ev.xexpose.width,ev.xexpose.height);
release_lock();
}
}
}
LCD XWindow[] = {
{ name: "X11",
rows: 0,
cols: 0,
xres: 0,
yres: 0,
bars: BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2 | BAR_V2 | BAR_T,
icons: 0,
gpos: 0,
init: xlcdinit,
clear: xlcdclear,
put: xlcdput,
bar: xlcdbar,
icon: xlcdicon,
gpo: NULL,
flush: xlcdflush,
quit: xlcdquit
},
{ NULL }
};
