src/rt/x11.c

#ifndef lint
static const char       RCSid[] = "$Id: x11.c,v 2.31 2003/07/21 22:30:19 schorsch Exp $";
#endif
/*
 *  x11.c - driver for X-windows version 11
 */

#include "copyright.h"

#include  "standard.h"
#include  <sys/ioctl.h>
#ifdef sparc
#include  <sys/conf.h>
#include  <sys/file.h>
#include  <sys/filio.h>
#endif
#if  !defined(FNDELAY) && defined(O_NONBLOCK)
#define  FNDELAY  O_NONBLOCK
#endif

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

#include  "platform.h"
#include  "color.h"
#include  "driver.h"
#include  "x11twind.h"
#include  "x11icon.h"

#define GAMMA           2.2             /* default exponent correction */

#define MINWIDTH        (32*COMCW)      /* minimum graphics window width */
#define MINHEIGHT       (MINWIDTH/2)    /* minimum graphics window height */

#define BORWIDTH        5               /* border width */
#define COMHEIGHT       (COMLH*COMCH)   /* command line height (pixels) */

#define COMFN           "8x13"          /* command line font name */
#define COMLH           3               /* number of command lines */
#define COMCW           8               /* approx. character width (pixels) */
#define COMCH           14              /* approx. character height (pixels) */

#define  ourscreen      DefaultScreen(ourdisplay)
#define  ourroot        RootWindow(ourdisplay,ourscreen)

#define  levptr(etype)  ((etype *)&currentevent)

static XEvent  currentevent;            /* current event */

static int  ncolors = 0;                /* color table size */
static int  mapped = 0;                 /* window is mapped? */
static unsigned long  *pixval = NULL;   /* allocated pixels */
static unsigned long  ourblack=0, ourwhite=1;

static Display  *ourdisplay = NULL;     /* our display */

static XVisualInfo  ourvinfo;           /* our visual information */

static Window  gwind = 0;               /* our graphics window */

static Cursor  pickcursor = 0;          /* cursor used for picking */

static int  gwidth, gheight;            /* graphics window size */

static int  comheight;                  /* desired comline height */
static TEXTWIND  *comline = NULL;       /* our command line */

static char  c_queue[64];               /* input queue */
static int  c_first = 0;                /* first character in queue */
static int  c_last = 0;                 /* last character in queue */

static GC  ourgc = 0;                   /* our graphics context for drawing */

static Colormap ourmap = 0;             /* our color map */

#define IC_X11          0
#define IC_IOCTL        1
#define IC_READ         2

static int  inpcheck;                   /* whence to check input */

static void x11_errout(char  *msg);

static dr_closef_t x11_close;
static dr_clearf_t x11_clear;
static dr_paintrf_t x11_paintr;
static dr_getcurf_t x11_getcur;
static dr_comoutf_t x11_comout;
static dr_cominf_t x11_comin;
static dr_flushf_t x11_flush;

static dr_cominf_t std_comin;
static dr_comoutf_t std_comout;

static struct driver  x11_driver = {
        x11_close, x11_clear, x11_paintr, x11_getcur,
        NULL, NULL, x11_flush, 1.0
};

static dr_getchf_t x11_getc;

static void freepixels(void);
static int getpixels(void);
static dr_newcolrf_t xnewcolr;
static unsigned long true_pixel(COLOR  col);
static void getevent(void);
static void getkey(XKeyPressedEvent  *ekey);
static void fixwindow(XExposeEvent  *eexp);
static void resizewindow(XConfigureEvent  *ersz);

extern dr_initf_t x11_init; /* XXX this should be in a seperate header file */


extern struct driver *
x11_init(               /* initialize driver */
        char  *name,
        char  *id
)
{
        char  *gv;
        int  nplanes;
        XSetWindowAttributes    ourwinattr;
        XWMHints  ourxwmhints;
        XSizeHints      oursizhints;
                                        /* open display server */
        ourdisplay = XOpenDisplay(NULL);
        if (ourdisplay == NULL) {
                eputs("cannot open X-windows; DISPLAY variable set?\n");
                return(NULL);
        }
                                        /* find a usable visual */
        nplanes = DisplayPlanes(ourdisplay, ourscreen);
        if (XMatchVisualInfo(ourdisplay,ourscreen,
                                nplanes>12?nplanes:24,TrueColor,&ourvinfo) ||
                        XMatchVisualInfo(ourdisplay,ourscreen,
                                nplanes>12?nplanes:24,DirectColor,&ourvinfo)) {
                ourblack = 0;
                ourwhite = ourvinfo.red_mask |
                                ourvinfo.green_mask |
                                ourvinfo.blue_mask ;
        } else {
                if (nplanes < 4) {
                        eputs("not enough colors\n");
                        return(NULL);
                }
                if (!XMatchVisualInfo(ourdisplay,ourscreen,
                                        nplanes,PseudoColor,&ourvinfo) &&
                                !XMatchVisualInfo(ourdisplay,ourscreen,
                                        nplanes,GrayScale,&ourvinfo)) {
                        eputs("unsupported visual type\n");
                        return(NULL);
                }
                ourblack = BlackPixel(ourdisplay,ourscreen);
                ourwhite = WhitePixel(ourdisplay,ourscreen);
        }
                                        /* set gamma */
        if ((gv = XGetDefault(ourdisplay, "radiance", "gamma")) != NULL
                        || (gv = getenv("DISPLAY_GAMMA")) != NULL)
                make_gmap(atof(gv));
        else
                make_gmap(GAMMA);
                                        /* X11 command line or no? */
        if (!strcmp(name, "x11"))
                comheight = COMHEIGHT;
        else /* "x11d" */ {
                comheight = 0;
#ifndef  FNDELAY
                eputs("warning: x11d driver not fully functional on this machine\n");
#endif
        }
                                        /* open window */
        ourwinattr.background_pixel = ourblack;
        ourwinattr.border_pixel = ourblack;
                                        /* this is stupid */
        ourwinattr.colormap = XCreateColormap(ourdisplay, ourroot,
                                ourvinfo.visual, AllocNone);
        gwind = XCreateWindow(ourdisplay, ourroot, 0, 0,
                DisplayWidth(ourdisplay,ourscreen)-2*BORWIDTH,
                DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH,
                BORWIDTH, ourvinfo.depth, InputOutput, ourvinfo.visual,
                CWBackPixel|CWBorderPixel|CWColormap, &ourwinattr);
        if (gwind == 0) {
                eputs("cannot create window\n");
                return(NULL);
        }
        XStoreName(ourdisplay, gwind, id);
        /* create a cursor */
        pickcursor = XCreateFontCursor(ourdisplay, XC_diamond_cross);
        ourgc = XCreateGC(ourdisplay, gwind, 0, NULL);
        ourxwmhints.flags = InputHint|IconPixmapHint;
        ourxwmhints.input = True;
        ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay,
                        gwind, x11icon_bits, x11icon_width, x11icon_height);
        XSetWMHints(ourdisplay, gwind, &ourxwmhints);
        oursizhints.min_width = MINWIDTH;
        oursizhints.min_height = MINHEIGHT+comheight;
        oursizhints.flags = PMinSize;
        XSetNormalHints(ourdisplay, gwind, &oursizhints);
        XSelectInput(ourdisplay, gwind, ExposureMask);
        XMapWindow(ourdisplay, gwind);
        XWindowEvent(ourdisplay, gwind, ExposureMask, levptr(XEvent));
        gwidth = levptr(XExposeEvent)->width;
        gheight = levptr(XExposeEvent)->height - comheight;
        x11_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth;
        x11_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight;
        x11_driver.inpready = 0;
        mapped = 1;
                                        /* set i/o vectors */
        if (comheight) {
                x11_driver.comin = x11_comin;
                x11_driver.comout = x11_comout;
                erract[COMMAND].pf = x11_comout;
                if (erract[WARNING].pf != NULL)
                        erract[WARNING].pf = x11_errout;
                inpcheck = IC_X11;
        } else {
                x11_driver.comin = std_comin;
                x11_driver.comout = std_comout;
                erract[COMMAND].pf = std_comout;
                inpcheck = IC_IOCTL;
        }
        return(&x11_driver);
}


static void
x11_close(void)                 /* close our display */
{
        erract[COMMAND].pf = NULL;              /* reset error vectors */
        if (erract[WARNING].pf != NULL)
                erract[WARNING].pf = wputs;
        if (ourdisplay == NULL)
                return;
        if (comline != NULL) {
                xt_close(comline);
                comline = NULL;
        }
        freepixels();
        XFreeGC(ourdisplay, ourgc);
        XDestroyWindow(ourdisplay, gwind);
        gwind = 0;
        ourgc = 0;
        XFreeCursor(ourdisplay, pickcursor);
        XCloseDisplay(ourdisplay);
        ourdisplay = NULL;
}


static void
x11_clear(                      /* clear our display */
        int  xres,
        int  yres
)
{
                                                /* check limits */
        if (xres < MINWIDTH)
                xres = MINWIDTH;
        if (yres < MINHEIGHT)
                yres = MINHEIGHT;
                                                /* resize window */
        if (xres != gwidth || yres != gheight) {
                XSelectInput(ourdisplay, gwind, 0);
                XResizeWindow(ourdisplay, gwind, xres, yres+comheight);
                gwidth = xres;
                gheight = yres;
                XFlush(ourdisplay);
                sleep(2);                       /* wait for window manager */
                XSync(ourdisplay, 1);           /* discard input */
        }
        XClearWindow(ourdisplay, gwind);
                                                /* reinitialize color table */
        if (ourvinfo.class == PseudoColor || ourvinfo.class == GrayScale) {
                if (getpixels() == 0)
                        eputs("cannot allocate colors\n");
                else
                        new_ctab(ncolors);
        }
                                                /* get new command line */
        if (comline != NULL)
                xt_close(comline);
        if (comheight) {
                comline = xt_open(ourdisplay, gwind, 0, gheight, gwidth,
                                comheight, 0, ourblack, ourwhite, COMFN);
                if (comline == NULL) {
                        eputs("cannot open command line window\n");
                        quit(1);
                }
                XSelectInput(ourdisplay, comline->w, ExposureMask);
                                                /* remove earmuffs */
                XSelectInput(ourdisplay, gwind,
                StructureNotifyMask|ExposureMask|KeyPressMask|ButtonPressMask);
        } else                                  /* remove earmuffs */
                XSelectInput(ourdisplay, gwind,
                        StructureNotifyMask|ExposureMask|ButtonPressMask);
}


static void
x11_paintr(             /* fill a rectangle */
        COLOR  col,
        int  xmin,
        int  ymin,
        int  xmax,
        int  ymax
)
{
        unsigned long  pixel;

        if (!mapped)
                return;
        if (ncolors > 0)
                pixel = pixval[get_pixel(col, xnewcolr)];
        else
                pixel = true_pixel(col);
        XSetForeground(ourdisplay, ourgc, pixel);
        XFillRectangle(ourdisplay, gwind, 
                ourgc, xmin, gheight-ymax, xmax-xmin, ymax-ymin);
}


static void
x11_flush(void)                 /* flush output */
{
        char    buf[256];
        int     n;
                                                /* check for input */
        XNoOp(ourdisplay);
        n = XPending(ourdisplay);                       /* from X server */
        while (n-- > 0)
                getevent();
#ifdef FNDELAY
        if (inpcheck == IC_IOCTL) {                     /* from stdin */
#ifdef FIONREAD
                if (ioctl(fileno(stdin), FIONREAD, &n) < 0) {
#else
                if (1) {
#endif
                        if (fcntl(fileno(stdin), F_SETFL, FNDELAY) < 0) {
                                eputs("cannot change input mode\n");
                                quit(1);
                        }
                        inpcheck = IC_READ;
                } else
                        x11_driver.inpready += n;
        }
        if (inpcheck == IC_READ) {
                n = read(fileno(stdin), buf, sizeof(buf)-1);
                if (n > 0) {
                        buf[n] = '\0';
                        tocombuf(buf, &x11_driver);
                }
        }
#endif
}


static void
x11_comin(              /* read in a command line */
        char  *inp,
        char  *prompt
)
{
        if (prompt != NULL) {
                x11_flush();            /* make sure we get everything */
                if (fromcombuf(inp, &x11_driver))
                        return;
                xt_puts(prompt, comline);
        }
        xt_cursor(comline, TBLKCURS);
        editline(inp, x11_getc, x11_comout);
        xt_cursor(comline, TNOCURS);
}


static void
x11_comout(             /* output a string to command line */
        char  *outp
)
{
        if (comline == NULL || outp == NULL || !outp[0])
                return;
        xt_puts(outp, comline);
        if (outp[strlen(outp)-1] == '\n')
                XFlush(ourdisplay);
}


static void
x11_errout(                     /* output an error message */
        char  *msg
)
{
        eputs(msg);             /* send to stderr also! */
        x11_comout(msg);
}


static void
std_comin(              /* read in command line from stdin */
        char  *inp,
        char  *prompt
)
{
        if (prompt != NULL) {
                if (fromcombuf(inp, &x11_driver))
                        return;
                if (!x11_driver.inpready)
                        std_comout(prompt);
        }
#ifdef FNDELAY
        if (inpcheck == IC_READ) {      /* turn off FNDELAY */
                if (fcntl(fileno(stdin), F_SETFL, 0) < 0) {
                        eputs("cannot change input mode\n");
                        quit(1);
                }
                inpcheck = IC_IOCTL;
        }
#endif
        if (gets(inp) == NULL) {
                strcpy(inp, "quit");
                return;
        }
        x11_driver.inpready -= strlen(inp) + 1;
        if (x11_driver.inpready < 0)
                x11_driver.inpready = 0;
}


static void
std_comout(             /* write out string to stdout */
        char    *outp
)
{
        fputs(outp, stdout);
        fflush(stdout);
}


static int
x11_getcur(             /* get cursor position */
        int  *xp,
        int  *yp
)
{
        while (XGrabPointer(ourdisplay, gwind, True, ButtonPressMask,
                        GrabModeAsync, GrabModeAsync, None, pickcursor,
                        CurrentTime) != GrabSuccess)
                sleep(2);

        do
                getevent();
        while (c_last <= c_first && levptr(XEvent)->type != ButtonPress);
        *xp = levptr(XButtonPressedEvent)->x;
        *yp = gheight-1 - levptr(XButtonPressedEvent)->y;
        XUngrabPointer(ourdisplay, CurrentTime);
        XFlush(ourdisplay);                             /* insure release */
        if (c_last > c_first)                   /* key pressed */
                return(x11_getc());
                                                /* button pressed */
        if (levptr(XButtonPressedEvent)->button == Button1)
                return(MB1);
        if (levptr(XButtonPressedEvent)->button == Button2)
                return(MB2);
        if (levptr(XButtonPressedEvent)->button == Button3)
                return(MB3);
        return(ABORT);
}


static void
xnewcolr(               /* enter a color into hardware table */
        int  ndx,
        int  r,
        int  g,
        int  b
)
{
        XColor  xcolor;

        xcolor.pixel = pixval[ndx];
        xcolor.red = r << 8;
        xcolor.green = g << 8;
        xcolor.blue = b << 8;
        xcolor.flags = DoRed|DoGreen|DoBlue;

        XStoreColor(ourdisplay, ourmap, &xcolor);
}


static int
getpixels(void)                         /* get the color map */
{
        XColor  thiscolor;
        register int  i, j;

        if (ncolors > 0)
                return(ncolors);
        if (ourvinfo.visual == DefaultVisual(ourdisplay,ourscreen)) {
                ourmap = DefaultColormap(ourdisplay,ourscreen);
                goto loop;
        }
newmap:
        ourmap = XCreateColormap(ourdisplay,gwind,ourvinfo.visual,AllocNone);
loop:
        for (ncolors = ourvinfo.colormap_size;
                        ncolors > ourvinfo.colormap_size/3;
                        ncolors = ncolors*.937) {
                pixval = (unsigned long *)malloc(ncolors*sizeof(unsigned long));
                if (pixval == NULL)
                        return(ncolors = 0);
                if (XAllocColorCells(ourdisplay,ourmap,0,NULL,0,pixval,ncolors))
                        break;
                free((void *)pixval);
                pixval = NULL;
        }
        if (pixval == NULL) {
                if (ourmap == DefaultColormap(ourdisplay,ourscreen))
                        goto newmap;            /* try it with our map */
                else
                        return(ncolors = 0);    /* failed */
        }
        if (ourmap != DefaultColormap(ourdisplay,ourscreen))
                for (i = 0; i < ncolors; i++) { /* reset black and white */
                        if (pixval[i] != ourblack && pixval[i] != ourwhite)
                                continue;
                        thiscolor.pixel = pixval[i];
                        thiscolor.flags = DoRed|DoGreen|DoBlue;
                        XQueryColor(ourdisplay,
                                        DefaultColormap(ourdisplay,ourscreen),
                                        &thiscolor);
                        XStoreColor(ourdisplay, ourmap, &thiscolor);
                        for (j = i; j+1 < ncolors; j++)
                                pixval[j] = pixval[j+1];
                        ncolors--;
                        i--;
                }
        XSetWindowColormap(ourdisplay, gwind, ourmap);
        return(ncolors);
}


static void
freepixels(void)                                /* free our pixels */
{
        if (ncolors == 0)
                return;
        XFreeColors(ourdisplay,ourmap,pixval,ncolors,0L);
        free((void *)pixval);
        pixval = NULL;
        ncolors = 0;
        if (ourmap != DefaultColormap(ourdisplay,ourscreen))
                XFreeColormap(ourdisplay, ourmap);
        ourmap = 0;
}


static unsigned long
true_pixel(                     /* return true pixel value for color */
        COLOR  col
)
{
        unsigned long  rval;
        BYTE  rgb[3];

        map_color(rgb, col);
        rval = ourvinfo.red_mask*rgb[RED]/255 & ourvinfo.red_mask;
        rval |= ourvinfo.green_mask*rgb[GRN]/255 & ourvinfo.green_mask;
        rval |= ourvinfo.blue_mask*rgb[BLU]/255 & ourvinfo.blue_mask;
        return(rval);
}


static int
x11_getc(void)                  /* get a command character */
{
        while (c_last <= c_first) {
                c_first = c_last = 0;           /* reset */
                getevent();                     /* wait for key */
        }
        x11_driver.inpready--;
        return(c_queue[c_first++]);
}


static void
getevent(void)                  /* get next event */
{
        XNextEvent(ourdisplay, levptr(XEvent));
        switch (levptr(XEvent)->type) {
        case ConfigureNotify:
                resizewindow(levptr(XConfigureEvent));
                break;
        case UnmapNotify:
                mapped = 0;
                freepixels();
                break;
        case MapNotify:
                if (ourvinfo.class == PseudoColor ||
                                ourvinfo.class == GrayScale) {
                        if (getpixels() == 0)
                                eputs("cannot allocate colors\n");
                        else
                                new_ctab(ncolors);
                }
                mapped = 1;
                break;
        case Expose:
                fixwindow(levptr(XExposeEvent));
                break;
        case KeyPress:
                getkey(levptr(XKeyPressedEvent));
                break;
        case ButtonPress:
                break;
        }
}


static void
getkey(                         /* get input key */
        register XKeyPressedEvent  *ekey
)
{
        register int  n;

        n = XLookupString(ekey, c_queue+c_last, sizeof(c_queue)-c_last,
                                NULL, NULL);
        c_last += n;
        x11_driver.inpready += n;
}


static void
fixwindow(                              /* repair damage to window */
        register XExposeEvent  *eexp
)
{
        char  buf[80];

        if (eexp->window == gwind) {
                sprintf(buf, "repaint %d %d %d %d\n",
                        eexp->x, gheight - eexp->y - eexp->height,
                        eexp->x + eexp->width, gheight - eexp->y);
                tocombuf(buf, &x11_driver);
        } else if (eexp->window == comline->w) {
                if (eexp->count == 0)
                        xt_redraw(comline);
        }
}


static void
resizewindow(                   /* resize window */
        register XConfigureEvent  *ersz
)
{
        if (ersz->width == gwidth && ersz->height-comheight == gheight)
                return;

        gwidth = ersz->width;
        gheight = ersz->height-comheight;
        x11_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth;
        x11_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight;

        tocombuf("new\n", &x11_driver);
}
Revision:	2.32
Committed:	Tue Mar 30 16:13:01 2004 UTC (20 years, 1 month ago) by schorsch
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R7P2, rad3R7P1, rad3R6, rad3R6P1, rad3R8
Changes since 2.31:	+86 -47 lines
Log Message:	Continued ANSIfication. There are only bits and pieces left now.
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	schorsch	2.32	static const char RCSid[] = "$Id: x11.c,v 2.31 2003/07/21 22:30:19 schorsch Exp $";
3	greg	1.1	#endif
4			/*
5	greg	2.4	* x11.c - driver for X-windows version 11
6	greg	2.29	*/
7
8	greg	2.30	#include "copyright.h"
9	greg	1.1
10	gregl	2.27	#include "standard.h"
11	greg	1.1	#include <sys/ioctl.h>
12	greg	2.23	#ifdef sparc
13			#include <sys/conf.h>
14			#include <sys/file.h>
15			#include <sys/filio.h>
16			#endif
17	greg	2.25	#if !defined(FNDELAY) && defined(O_NONBLOCK)
18			#define FNDELAY O_NONBLOCK
19			#endif
20	greg	1.1
21			#include <X11/Xlib.h>
22	greg	1.4	#include <X11/cursorfont.h>
23			#include <X11/Xutil.h>
24	greg	1.1
25	schorsch	2.32	#include "platform.h"
26	greg	1.1	#include "color.h"
27			#include "driver.h"
28			#include "x11twind.h"
29	greg	1.18	#include "x11icon.h"
30	greg	1.1
31	greg	2.6	#define GAMMA 2.2 /* default exponent correction */
32	greg	1.1
33	greg	1.6	#define MINWIDTH (32COMCW) / minimum graphics window width */
34	greg	2.9	#define MINHEIGHT (MINWIDTH/2) /* minimum graphics window height */
35	greg	1.4
36	greg	1.1	#define BORWIDTH 5 /* border width */
37			#define COMHEIGHT (COMLHCOMCH) / command line height (pixels) */
38
39			#define COMFN "8x13" /* command line font name */
40			#define COMLH 3 /* number of command lines */
41			#define COMCW 8 /* approx. character width (pixels) */
42			#define COMCH 14 /* approx. character height (pixels) */
43
44	greg	1.4	#define ourscreen DefaultScreen(ourdisplay)
45			#define ourroot RootWindow(ourdisplay,ourscreen)
46
47			#define levptr(etype) ((etype *)&currentevent)
48	greg	1.1
49	greg	1.4	static XEvent currentevent; /* current event */
50	greg	1.1
51			static int ncolors = 0; /* color table size */
52	greg	2.8	static int mapped = 0; /* window is mapped? */
53	greg	1.17	static unsigned long pixval = NULL; / allocated pixels */
54	greg	2.3	static unsigned long ourblack=0, ourwhite=1;
55	greg	1.1
56			static Display ourdisplay = NULL; / our display */
57
58	greg	2.2	static XVisualInfo ourvinfo; /* our visual information */
59	greg	1.6
60	greg	1.1	static Window gwind = 0; /* our graphics window */
61
62			static Cursor pickcursor = 0; /* cursor used for picking */
63
64	greg	1.4	static int gwidth, gheight; /* graphics window size */
65	greg	1.1
66	greg	2.17	static int comheight; /* desired comline height */
67	greg	1.1	static TEXTWIND comline = NULL; / our command line */
68
69			static char c_queue[64]; /* input queue */
70			static int c_first = 0; /* first character in queue */
71			static int c_last = 0; /* last character in queue */
72
73			static GC ourgc = 0; /* our graphics context for drawing */
74
75	greg	1.6	static Colormap ourmap = 0; /* our color map */
76	greg	1.1
77	greg	2.19	#define IC_X11 0
78			#define IC_IOCTL 1
79			#define IC_READ 2
80
81			static int inpcheck; /* whence to check input */
82
83	schorsch	2.32	static void x11_errout(char *msg);
84	greg	1.1
85	schorsch	2.32	static dr_closef_t x11_close;
86			static dr_clearf_t x11_clear;
87			static dr_paintrf_t x11_paintr;
88			static dr_getcurf_t x11_getcur;
89			static dr_comoutf_t x11_comout;
90			static dr_cominf_t x11_comin;
91			static dr_flushf_t x11_flush;
92	greg	1.1
93	schorsch	2.32	static dr_cominf_t std_comin;
94			static dr_comoutf_t std_comout;
95	greg	2.17
96	greg	1.1	static struct driver x11_driver = {
97			x11_close, x11_clear, x11_paintr, x11_getcur,
98	greg	2.17	NULL, NULL, x11_flush, 1.0
99	greg	1.1	};
100
101	schorsch	2.32	static dr_getchf_t x11_getc;
102	greg	1.1
103	schorsch	2.32	static void freepixels(void);
104			static int getpixels(void);
105			static dr_newcolrf_t xnewcolr;
106			static unsigned long true_pixel(COLOR col);
107			static void getevent(void);
108			static void getkey(XKeyPressedEvent *ekey);
109			static void fixwindow(XExposeEvent *eexp);
110			static void resizewindow(XConfigureEvent *ersz);
111
112			extern dr_initf_t x11_init; /* XXX this should be in a seperate header file */
113
114
115			extern struct driver *
116			x11_init( /* initialize driver */
117			char *name,
118			char *id
119			)
120	greg	1.1	{
121	greg	2.6	char *gv;
122	greg	1.6	int nplanes;
123	greg	1.10	XSetWindowAttributes ourwinattr;
124	greg	1.4	XWMHints ourxwmhints;
125	greg	1.12	XSizeHints oursizhints;
126	greg	2.17	/* open display server */
127	greg	1.1	ourdisplay = XOpenDisplay(NULL);
128			if (ourdisplay == NULL) {
129	gregl	2.27	eputs("cannot open X-windows; DISPLAY variable set?\n");
130	greg	1.1	return(NULL);
131			}
132	greg	2.2	/* find a usable visual */
133	greg	1.6	nplanes = DisplayPlanes(ourdisplay, ourscreen);
134	greg	2.4	if (XMatchVisualInfo(ourdisplay,ourscreen,
135	greg	2.26	nplanes>12?nplanes:24,TrueColor,&ourvinfo) \|\|
136	greg	2.4	XMatchVisualInfo(ourdisplay,ourscreen,
137	greg	2.26	nplanes>12?nplanes:24,DirectColor,&ourvinfo)) {
138	greg	2.4	ourblack = 0;
139			ourwhite = ourvinfo.red_mask \|
140			ourvinfo.green_mask \|
141			ourvinfo.blue_mask ;
142			} else {
143	greg	2.2	if (nplanes < 4) {
144	gregl	2.27	eputs("not enough colors\n");
145	greg	1.6	return(NULL);
146	greg	2.4	}
147			if (!XMatchVisualInfo(ourdisplay,ourscreen,
148	greg	2.2	nplanes,PseudoColor,&ourvinfo) &&
149			!XMatchVisualInfo(ourdisplay,ourscreen,
150			nplanes,GrayScale,&ourvinfo)) {
151	gregl	2.27	eputs("unsupported visual type\n");
152	greg	2.2	return(NULL);
153	greg	1.6	}
154	greg	2.3	ourblack = BlackPixel(ourdisplay,ourscreen);
155			ourwhite = WhitePixel(ourdisplay,ourscreen);
156			}
157	greg	2.6	/* set gamma */
158	greg	2.14	if ((gv = XGetDefault(ourdisplay, "radiance", "gamma")) != NULL
159	greg	2.18	\|\| (gv = getenv("DISPLAY_GAMMA")) != NULL)
160	greg	2.6	make_gmap(atof(gv));
161			else
162			make_gmap(GAMMA);
163	greg	2.17	/* X11 command line or no? */
164			if (!strcmp(name, "x11"))
165			comheight = COMHEIGHT;
166	greg	2.25	else /* "x11d" */ {
167	greg	2.17	comheight = 0;
168	greg	2.25	#ifndef FNDELAY
169	gregl	2.27	eputs("warning: x11d driver not fully functional on this machine\n");
170	greg	2.25	#endif
171			}
172	greg	2.6	/* open window */
173	greg	1.12	ourwinattr.background_pixel = ourblack;
174	greg	1.10	ourwinattr.border_pixel = ourblack;
175	greg	2.4	/* this is stupid */
176	greg	2.2	ourwinattr.colormap = XCreateColormap(ourdisplay, ourroot,
177			ourvinfo.visual, AllocNone);
178	greg	1.10	gwind = XCreateWindow(ourdisplay, ourroot, 0, 0,
179	greg	1.4	DisplayWidth(ourdisplay,ourscreen)-2*BORWIDTH,
180			DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH,
181	greg	2.2	BORWIDTH, ourvinfo.depth, InputOutput, ourvinfo.visual,
182			CWBackPixel\|CWBorderPixel\|CWColormap, &ourwinattr);
183	greg	1.4	if (gwind == 0) {
184	gregl	2.27	eputs("cannot create window\n");
185	greg	1.4	return(NULL);
186			}
187	greg	2.4	XStoreName(ourdisplay, gwind, id);
188	greg	1.10	/* create a cursor */
189			pickcursor = XCreateFontCursor(ourdisplay, XC_diamond_cross);
190	greg	1.4	ourgc = XCreateGC(ourdisplay, gwind, 0, NULL);
191	greg	1.18	ourxwmhints.flags = InputHint\|IconPixmapHint;
192	greg	1.4	ourxwmhints.input = True;
193	greg	1.18	ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay,
194			gwind, x11icon_bits, x11icon_width, x11icon_height);
195	greg	1.4	XSetWMHints(ourdisplay, gwind, &ourxwmhints);
196	greg	1.12	oursizhints.min_width = MINWIDTH;
197	greg	2.17	oursizhints.min_height = MINHEIGHT+comheight;
198	greg	1.12	oursizhints.flags = PMinSize;
199			XSetNormalHints(ourdisplay, gwind, &oursizhints);
200	greg	1.4	XSelectInput(ourdisplay, gwind, ExposureMask);
201			XMapWindow(ourdisplay, gwind);
202	greg	1.17	XWindowEvent(ourdisplay, gwind, ExposureMask, levptr(XEvent));
203	greg	1.4	gwidth = levptr(XExposeEvent)->width;
204	greg	2.17	gheight = levptr(XExposeEvent)->height - comheight;
205	greg	1.4	x11_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth;
206			x11_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight;
207	greg	1.1	x11_driver.inpready = 0;
208	greg	2.8	mapped = 1;
209	greg	2.17	/* set i/o vectors */
210			if (comheight) {
211			x11_driver.comin = x11_comin;
212			x11_driver.comout = x11_comout;
213	gregl	2.27	erract[COMMAND].pf = x11_comout;
214			if (erract[WARNING].pf != NULL)
215			erract[WARNING].pf = x11_errout;
216	greg	2.19	inpcheck = IC_X11;
217	greg	2.17	} else {
218			x11_driver.comin = std_comin;
219			x11_driver.comout = std_comout;
220	gregl	2.27	erract[COMMAND].pf = std_comout;
221	greg	2.19	inpcheck = IC_IOCTL;
222	greg	2.17	}
223	greg	1.1	return(&x11_driver);
224			}
225
226
227	greg	2.29	static void
228	schorsch	2.32	x11_close(void) /* close our display */
229	greg	1.1	{
230	gregl	2.27	erract[COMMAND].pf = NULL; /* reset error vectors */
231			if (erract[WARNING].pf != NULL)
232			erract[WARNING].pf = wputs;
233	greg	1.1	if (ourdisplay == NULL)
234			return;
235			if (comline != NULL) {
236			xt_close(comline);
237			comline = NULL;
238			}
239	greg	1.8	freepixels();
240			XFreeGC(ourdisplay, ourgc);
241			XDestroyWindow(ourdisplay, gwind);
242			gwind = 0;
243			ourgc = 0;
244	greg	1.1	XFreeCursor(ourdisplay, pickcursor);
245			XCloseDisplay(ourdisplay);
246			ourdisplay = NULL;
247			}
248
249
250	greg	2.29	static void
251	schorsch	2.32	x11_clear( /* clear our display */
252			int xres,
253			int yres
254			)
255	greg	1.1	{
256	greg	1.12	/* check limits */
257			if (xres < MINWIDTH)
258			xres = MINWIDTH;
259			if (yres < MINHEIGHT)
260			yres = MINHEIGHT;
261			/* resize window */
262			if (xres != gwidth \|\| yres != gheight) {
263	greg	1.4	XSelectInput(ourdisplay, gwind, 0);
264	greg	2.17	XResizeWindow(ourdisplay, gwind, xres, yres+comheight);
265	greg	1.1	gwidth = xres;
266			gheight = yres;
267	greg	1.8	XFlush(ourdisplay);
268			sleep(2); /* wait for window manager */
269	greg	1.4	XSync(ourdisplay, 1); /* discard input */
270			}
271	greg	1.13	XClearWindow(ourdisplay, gwind);
272			/* reinitialize color table */
273	schorsch	2.31	if (ourvinfo.class == PseudoColor \|\| ourvinfo.class == GrayScale) {
274	greg	1.13	if (getpixels() == 0)
275	gregl	2.27	eputs("cannot allocate colors\n");
276	greg	1.13	else
277			new_ctab(ncolors);
278	schorsch	2.31	}
279	greg	1.12	/* get new command line */
280	greg	1.13	if (comline != NULL)
281			xt_close(comline);
282	greg	2.17	if (comheight) {
283			comline = xt_open(ourdisplay, gwind, 0, gheight, gwidth,
284			comheight, 0, ourblack, ourwhite, COMFN);
285			if (comline == NULL) {
286	gregl	2.27	eputs("cannot open command line window\n");
287	greg	2.17	quit(1);
288			}
289			XSelectInput(ourdisplay, comline->w, ExposureMask);
290	greg	1.12	/* remove earmuffs */
291	greg	2.17	XSelectInput(ourdisplay, gwind,
292	greg	1.4	StructureNotifyMask\|ExposureMask\|KeyPressMask\|ButtonPressMask);
293	greg	2.17	} else /* remove earmuffs */
294			XSelectInput(ourdisplay, gwind,
295			StructureNotifyMask\|ExposureMask\|ButtonPressMask);
296	greg	1.1	}
297
298
299	greg	2.29	static void
300	schorsch	2.32	x11_paintr( /* fill a rectangle */
301			COLOR col,
302			int xmin,
303			int ymin,
304			int xmax,
305			int ymax
306			)
307	greg	1.1	{
308	greg	1.6	unsigned long pixel;
309	greg	1.1
310	greg	2.8	if (!mapped)
311			return;
312	greg	1.6	if (ncolors > 0)
313			pixel = pixval[get_pixel(col, xnewcolr)];
314	greg	2.8	else
315	greg	1.6	pixel = true_pixel(col);
316			XSetForeground(ourdisplay, ourgc, pixel);
317			XFillRectangle(ourdisplay, gwind,
318			ourgc, xmin, gheight-ymax, xmax-xmin, ymax-ymin);
319	greg	1.5	}
320
321
322	greg	2.29	static void
323	schorsch	2.32	x11_flush(void) /* flush output */
324	greg	1.5	{
325	greg	2.19	char buf[256];
326	greg	2.15	int n;
327	greg	2.16	/* check for input */
328	greg	1.10	XNoOp(ourdisplay);
329	greg	2.16	n = XPending(ourdisplay); /* from X server */
330			while (n-- > 0)
331	greg	1.5	getevent();
332	greg	2.22	#ifdef FNDELAY
333	greg	2.19	if (inpcheck == IC_IOCTL) { /* from stdin */
334	greg	2.22	#ifdef FIONREAD
335	greg	2.17	if (ioctl(fileno(stdin), FIONREAD, &n) < 0) {
336	greg	2.22	#else
337			if (1) {
338			#endif
339	greg	2.19	if (fcntl(fileno(stdin), F_SETFL, FNDELAY) < 0) {
340	gregl	2.27	eputs("cannot change input mode\n");
341	greg	2.19	quit(1);
342			}
343			inpcheck = IC_READ;
344			} else
345			x11_driver.inpready += n;
346			}
347			if (inpcheck == IC_READ) {
348			n = read(fileno(stdin), buf, sizeof(buf)-1);
349			if (n > 0) {
350			buf[n] = '\0';
351	greg	2.21	tocombuf(buf, &x11_driver);
352	greg	2.17	}
353	greg	2.15	}
354	greg	2.22	#endif
355	greg	1.1	}
356
357
358	greg	2.29	static void
359	schorsch	2.32	x11_comin( /* read in a command line */
360			char *inp,
361			char *prompt
362			)
363	greg	1.1	{
364	greg	2.15	if (prompt != NULL) {
365			x11_flush(); /* make sure we get everything */
366	greg	1.4	if (fromcombuf(inp, &x11_driver))
367			return;
368	greg	2.15	xt_puts(prompt, comline);
369			}
370	greg	1.1	xt_cursor(comline, TBLKCURS);
371			editline(inp, x11_getc, x11_comout);
372			xt_cursor(comline, TNOCURS);
373			}
374
375
376	greg	2.29	static void
377	schorsch	2.32	x11_comout( /* output a string to command line */
378			char *outp
379			)
380	greg	1.1	{
381	gregl	2.28	if (comline == NULL \|\| outp == NULL \|\| !outp[0])
382	greg	1.11	return;
383	greg	2.17	xt_puts(outp, comline);
384			if (outp[strlen(outp)-1] == '\n')
385	greg	1.11	XFlush(ourdisplay);
386	greg	1.1	}
387
388
389	greg	2.29	static void
390	schorsch	2.32	x11_errout( /* output an error message */
391			char *msg
392			)
393	greg	1.1	{
394	gregl	2.27	eputs(msg); /* send to stderr also! */
395	greg	1.1	x11_comout(msg);
396			}
397
398
399	greg	2.29	static void
400	schorsch	2.32	std_comin( /* read in command line from stdin */
401			char *inp,
402			char *prompt
403			)
404	greg	2.17	{
405			if (prompt != NULL) {
406			if (fromcombuf(inp, &x11_driver))
407			return;
408			if (!x11_driver.inpready)
409	greg	2.25	std_comout(prompt);
410	greg	2.17	}
411	greg	2.24	#ifdef FNDELAY
412			if (inpcheck == IC_READ) { /* turn off FNDELAY */
413			if (fcntl(fileno(stdin), F_SETFL, 0) < 0) {
414	gregl	2.27	eputs("cannot change input mode\n");
415	greg	2.24	quit(1);
416			}
417			inpcheck = IC_IOCTL;
418			}
419			#endif
420	greg	2.17	if (gets(inp) == NULL) {
421			strcpy(inp, "quit");
422			return;
423			}
424			x11_driver.inpready -= strlen(inp) + 1;
425			if (x11_driver.inpready < 0)
426			x11_driver.inpready = 0;
427			}
428
429
430	greg	2.29	static void
431	schorsch	2.32	std_comout( /* write out string to stdout */
432			char *outp
433			)
434	greg	2.17	{
435			fputs(outp, stdout);
436	greg	2.20	fflush(stdout);
437	greg	2.17	}
438
439
440	greg	1.1	static int
441	schorsch	2.32	x11_getcur( /* get cursor position */
442			int *xp,
443			int *yp
444			)
445	greg	1.1	{
446			while (XGrabPointer(ourdisplay, gwind, True, ButtonPressMask,
447			GrabModeAsync, GrabModeAsync, None, pickcursor,
448			CurrentTime) != GrabSuccess)
449			sleep(2);
450
451			do
452			getevent();
453			while (c_last <= c_first && levptr(XEvent)->type != ButtonPress);
454			*xp = levptr(XButtonPressedEvent)->x;
455			*yp = gheight-1 - levptr(XButtonPressedEvent)->y;
456			XUngrabPointer(ourdisplay, CurrentTime);
457			XFlush(ourdisplay); /* insure release */
458			if (c_last > c_first) /* key pressed */
459			return(x11_getc());
460			/* button pressed */
461	greg	2.10	if (levptr(XButtonPressedEvent)->button == Button1)
462	greg	1.1	return(MB1);
463	greg	2.10	if (levptr(XButtonPressedEvent)->button == Button2)
464	greg	1.1	return(MB2);
465	greg	2.10	if (levptr(XButtonPressedEvent)->button == Button3)
466	greg	1.1	return(MB3);
467			return(ABORT);
468			}
469
470
471	greg	2.29	static void
472	schorsch	2.32	xnewcolr( /* enter a color into hardware table */
473			int ndx,
474			int r,
475			int g,
476			int b
477			)
478	greg	1.1	{
479			XColor xcolor;
480
481			xcolor.pixel = pixval[ndx];
482			xcolor.red = r << 8;
483			xcolor.green = g << 8;
484			xcolor.blue = b << 8;
485			xcolor.flags = DoRed\|DoGreen\|DoBlue;
486
487			XStoreColor(ourdisplay, ourmap, &xcolor);
488			}
489
490
491			static int
492	schorsch	2.32	getpixels(void) /* get the color map */
493	greg	1.1	{
494	greg	1.16	XColor thiscolor;
495			register int i, j;
496
497	greg	1.4	if (ncolors > 0)
498	greg	2.2	return(ncolors);
499			if (ourvinfo.visual == DefaultVisual(ourdisplay,ourscreen)) {
500	greg	1.6	ourmap = DefaultColormap(ourdisplay,ourscreen);
501			goto loop;
502			}
503			newmap:
504	greg	2.2	ourmap = XCreateColormap(ourdisplay,gwind,ourvinfo.visual,AllocNone);
505	greg	1.6	loop:
506	greg	2.2	for (ncolors = ourvinfo.colormap_size;
507			ncolors > ourvinfo.colormap_size/3;
508	greg	1.6	ncolors = ncolors*.937) {
509	greg	1.17	pixval = (unsigned long )malloc(ncolorssizeof(unsigned long));
510	greg	1.1	if (pixval == NULL)
511	greg	1.6	return(ncolors = 0);
512	greg	2.8	if (XAllocColorCells(ourdisplay,ourmap,0,NULL,0,pixval,ncolors))
513	greg	1.6	break;
514	greg	2.29	free((void *)pixval);
515	greg	1.6	pixval = NULL;
516	greg	1.1	}
517	greg	1.6	if (pixval == NULL) {
518			if (ourmap == DefaultColormap(ourdisplay,ourscreen))
519			goto newmap; /* try it with our map */
520			else
521			return(ncolors = 0); /* failed */
522			}
523	greg	1.16	if (ourmap != DefaultColormap(ourdisplay,ourscreen))
524			for (i = 0; i < ncolors; i++) { /* reset black and white */
525	greg	1.6	if (pixval[i] != ourblack && pixval[i] != ourwhite)
526			continue;
527			thiscolor.pixel = pixval[i];
528			thiscolor.flags = DoRed\|DoGreen\|DoBlue;
529			XQueryColor(ourdisplay,
530			DefaultColormap(ourdisplay,ourscreen),
531			&thiscolor);
532			XStoreColor(ourdisplay, ourmap, &thiscolor);
533			for (j = i; j+1 < ncolors; j++)
534			pixval[j] = pixval[j+1];
535			ncolors--;
536			i--;
537			}
538	greg	1.16	XSetWindowColormap(ourdisplay, gwind, ourmap);
539	greg	1.6	return(ncolors);
540	greg	1.1	}
541
542
543	greg	2.29	static void
544	schorsch	2.32	freepixels(void) /* free our pixels */
545	greg	1.1	{
546			if (ncolors == 0)
547			return;
548			XFreeColors(ourdisplay,ourmap,pixval,ncolors,0L);
549	greg	2.29	free((void *)pixval);
550	greg	2.7	pixval = NULL;
551	greg	1.1	ncolors = 0;
552	greg	1.8	if (ourmap != DefaultColormap(ourdisplay,ourscreen))
553	greg	1.6	XFreeColormap(ourdisplay, ourmap);
554			ourmap = 0;
555	greg	1.1	}
556
557
558	greg	1.6	static unsigned long
559	schorsch	2.32	true_pixel( /* return true pixel value for color */
560			COLOR col
561			)
562	greg	1.6	{
563			unsigned long rval;
564			BYTE rgb[3];
565
566			map_color(rgb, col);
567	greg	2.2	rval = ourvinfo.red_mask*rgb[RED]/255 & ourvinfo.red_mask;
568			rval \|= ourvinfo.green_mask*rgb[GRN]/255 & ourvinfo.green_mask;
569			rval \|= ourvinfo.blue_mask*rgb[BLU]/255 & ourvinfo.blue_mask;
570	greg	1.6	return(rval);
571			}
572
573
574	greg	1.1	static int
575	schorsch	2.32	x11_getc(void) /* get a command character */
576	greg	1.1	{
577			while (c_last <= c_first) {
578			c_first = c_last = 0; /* reset */
579			getevent(); /* wait for key */
580			}
581			x11_driver.inpready--;
582			return(c_queue[c_first++]);
583			}
584
585
586	greg	2.29	static void
587	schorsch	2.32	getevent(void) /* get next event */
588	greg	1.1	{
589			XNextEvent(ourdisplay, levptr(XEvent));
590			switch (levptr(XEvent)->type) {
591	greg	1.4	case ConfigureNotify:
592			resizewindow(levptr(XConfigureEvent));
593			break;
594			case UnmapNotify:
595	greg	2.8	mapped = 0;
596	greg	1.4	freepixels();
597			break;
598			case MapNotify:
599	greg	2.2	if (ourvinfo.class == PseudoColor \|\|
600	schorsch	2.31	ourvinfo.class == GrayScale) {
601	greg	1.6	if (getpixels() == 0)
602	gregl	2.27	eputs("cannot allocate colors\n");
603	greg	1.6	else
604			new_ctab(ncolors);
605	schorsch	2.31	}
606	greg	2.8	mapped = 1;
607	greg	1.4	break;
608			case Expose:
609			fixwindow(levptr(XExposeEvent));
610			break;
611	greg	1.1	case KeyPress:
612			getkey(levptr(XKeyPressedEvent));
613			break;
614			case ButtonPress:
615			break;
616			}
617			}
618
619
620	greg	2.29	static void
621	schorsch	2.32	getkey( /* get input key */
622			register XKeyPressedEvent *ekey
623			)
624	greg	1.1	{
625	greg	1.8	register int n;
626	greg	1.7
627			n = XLookupString(ekey, c_queue+c_last, sizeof(c_queue)-c_last,
628	greg	1.1	NULL, NULL);
629	greg	1.7	c_last += n;
630			x11_driver.inpready += n;
631	greg	1.1	}
632
633
634	greg	2.29	static void
635	schorsch	2.32	fixwindow( /* repair damage to window */
636			register XExposeEvent *eexp
637			)
638	greg	1.1	{
639	greg	2.21	char buf[80];
640
641	greg	1.4	if (eexp->window == gwind) {
642	greg	2.21	sprintf(buf, "repaint %d %d %d %d\n",
643	greg	1.4	eexp->x, gheight - eexp->y - eexp->height,
644	greg	1.1	eexp->x + eexp->width, gheight - eexp->y);
645	greg	2.21	tocombuf(buf, &x11_driver);
646	greg	1.4	} else if (eexp->window == comline->w) {
647			if (eexp->count == 0)
648			xt_redraw(comline);
649			}
650	greg	1.1	}
651	greg	1.4
652
653	greg	2.29	static void
654	schorsch	2.32	resizewindow( /* resize window */
655			register XConfigureEvent *ersz
656			)
657	greg	1.4	{
658	greg	2.17	if (ersz->width == gwidth && ersz->height-comheight == gheight)
659	greg	1.4	return;
660
661			gwidth = ersz->width;
662	greg	2.17	gheight = ersz->height-comheight;
663	greg	1.4	x11_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth;
664			x11_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight;
665
666	greg	2.21	tocombuf("new\n", &x11_driver);
667	greg	1.4	}