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/* Copyright (c) 1992 Regents of the University of California */ |
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|
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#endif |
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|
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/* |
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* x11.c - driver for X-windows version 11 |
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* |
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* Jan 1990 |
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*/ |
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|
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#include <stdio.h> |
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#include <math.h> |
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#include <sys/ioctl.h> |
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#include <fcntl.h> |
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#ifdef sparc |
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#include <sys/conf.h> |
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#include <sys/file.h> |
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#include <sys/filio.h> |
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#endif |
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|
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#include <X11/Xlib.h> |
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#include <X11/cursorfont.h> |
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#include <X11/Xutil.h> |
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|
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#include "color.h" |
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#include "driver.h" |
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#include "x11twind.h" |
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#include "x11icon.h" |
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|
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#define GAMMA 2.2 /* default exponent correction */ |
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|
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#define MINWIDTH (32*COMCW) /* minimum graphics window width */ |
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#define MINHEIGHT (MINWIDTH/2) /* minimum graphics window height */ |
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|
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#define BORWIDTH 5 /* border width */ |
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#define COMHEIGHT (COMLH*COMCH) /* command line height (pixels) */ |
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|
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#define COMFN "8x13" /* command line font name */ |
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#define COMLH 3 /* number of command lines */ |
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#define COMCW 8 /* approx. character width (pixels) */ |
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#define COMCH 14 /* approx. character height (pixels) */ |
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|
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#define ourscreen DefaultScreen(ourdisplay) |
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#define ourroot RootWindow(ourdisplay,ourscreen) |
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|
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#define levptr(etype) ((etype *)¤tevent) |
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|
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static XEvent currentevent; /* current event */ |
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|
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static int ncolors = 0; /* color table size */ |
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static int mapped = 0; /* window is mapped? */ |
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static unsigned long *pixval = NULL; /* allocated pixels */ |
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static unsigned long ourblack=0, ourwhite=1; |
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|
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static Display *ourdisplay = NULL; /* our display */ |
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|
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static XVisualInfo ourvinfo; /* our visual information */ |
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|
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static Window gwind = 0; /* our graphics window */ |
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|
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static Cursor pickcursor = 0; /* cursor used for picking */ |
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|
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static int gwidth, gheight; /* graphics window size */ |
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|
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static int comheight; /* desired comline height */ |
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static TEXTWIND *comline = NULL; /* our command line */ |
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|
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static char c_queue[64]; /* input queue */ |
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static int c_first = 0; /* first character in queue */ |
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static int c_last = 0; /* last character in queue */ |
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|
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static GC ourgc = 0; /* our graphics context for drawing */ |
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|
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static Colormap ourmap = 0; /* our color map */ |
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|
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#define IC_X11 0 |
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#define IC_IOCTL 1 |
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#define IC_READ 2 |
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|
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static int inpcheck; /* whence to check input */ |
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|
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extern char *malloc(); |
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|
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static int x11_close(), x11_clear(), x11_paintr(), x11_errout(), |
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x11_getcur(), x11_comout(), x11_comin(), x11_flush(); |
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|
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static int std_comin(), std_comout(); |
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|
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static struct driver x11_driver = { |
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x11_close, x11_clear, x11_paintr, x11_getcur, |
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NULL, NULL, x11_flush, 1.0 |
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}; |
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|
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static int getpixels(), xnewcolr(), freepixels(), resizewindow(), |
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getevent(), getkey(), fixwindow(), x11_getc(); |
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static unsigned long true_pixel(); |
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|
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|
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struct driver * |
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x11_init(name, id) /* initialize driver */ |
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char *name, *id; |
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{ |
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extern char *getenv(); |
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char *gv; |
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int nplanes; |
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XSetWindowAttributes ourwinattr; |
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XWMHints ourxwmhints; |
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XSizeHints oursizhints; |
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/* open display server */ |
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ourdisplay = XOpenDisplay(NULL); |
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if (ourdisplay == NULL) { |
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stderr_v("cannot open X-windows; DISPLAY variable set?\n"); |
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return(NULL); |
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} |
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/* find a usable visual */ |
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nplanes = DisplayPlanes(ourdisplay, ourscreen); |
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if (XMatchVisualInfo(ourdisplay,ourscreen, |
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24,TrueColor,&ourvinfo) || |
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XMatchVisualInfo(ourdisplay,ourscreen, |
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24,DirectColor,&ourvinfo)) { |
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ourblack = 0; |
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ourwhite = ourvinfo.red_mask | |
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ourvinfo.green_mask | |
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ourvinfo.blue_mask ; |
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} else { |
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if (nplanes < 4) { |
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stderr_v("not enough colors\n"); |
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return(NULL); |
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} |
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if (!XMatchVisualInfo(ourdisplay,ourscreen, |
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nplanes,PseudoColor,&ourvinfo) && |
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!XMatchVisualInfo(ourdisplay,ourscreen, |
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nplanes,GrayScale,&ourvinfo)) { |
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stderr_v("unsupported visual type\n"); |
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return(NULL); |
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} |
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ourblack = BlackPixel(ourdisplay,ourscreen); |
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ourwhite = WhitePixel(ourdisplay,ourscreen); |
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} |
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/* set gamma */ |
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if ((gv = XGetDefault(ourdisplay, "radiance", "gamma")) != NULL |
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|| (gv = getenv("DISPLAY_GAMMA")) != NULL) |
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make_gmap(atof(gv)); |
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else |
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make_gmap(GAMMA); |
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/* X11 command line or no? */ |
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if (!strcmp(name, "x11")) |
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comheight = COMHEIGHT; |
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else /* "x11d" */ |
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comheight = 0; |
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/* open window */ |
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ourwinattr.background_pixel = ourblack; |
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ourwinattr.border_pixel = ourblack; |
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/* this is stupid */ |
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ourwinattr.colormap = XCreateColormap(ourdisplay, ourroot, |
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ourvinfo.visual, AllocNone); |
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gwind = XCreateWindow(ourdisplay, ourroot, 0, 0, |
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DisplayWidth(ourdisplay,ourscreen)-2*BORWIDTH, |
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DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH, |
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BORWIDTH, ourvinfo.depth, InputOutput, ourvinfo.visual, |
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CWBackPixel|CWBorderPixel|CWColormap, &ourwinattr); |
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if (gwind == 0) { |
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stderr_v("cannot create window\n"); |
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return(NULL); |
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} |
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XStoreName(ourdisplay, gwind, id); |
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/* create a cursor */ |
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pickcursor = XCreateFontCursor(ourdisplay, XC_diamond_cross); |
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ourgc = XCreateGC(ourdisplay, gwind, 0, NULL); |
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ourxwmhints.flags = InputHint|IconPixmapHint; |
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ourxwmhints.input = True; |
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ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay, |
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gwind, x11icon_bits, x11icon_width, x11icon_height); |
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XSetWMHints(ourdisplay, gwind, &ourxwmhints); |
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oursizhints.min_width = MINWIDTH; |
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oursizhints.min_height = MINHEIGHT+comheight; |
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oursizhints.flags = PMinSize; |
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XSetNormalHints(ourdisplay, gwind, &oursizhints); |
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XSelectInput(ourdisplay, gwind, ExposureMask); |
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XMapWindow(ourdisplay, gwind); |
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XWindowEvent(ourdisplay, gwind, ExposureMask, levptr(XEvent)); |
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gwidth = levptr(XExposeEvent)->width; |
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gheight = levptr(XExposeEvent)->height - comheight; |
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x11_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth; |
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x11_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight; |
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x11_driver.inpready = 0; |
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mapped = 1; |
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/* set i/o vectors */ |
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if (comheight) { |
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x11_driver.comin = x11_comin; |
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x11_driver.comout = x11_comout; |
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cmdvec = x11_comout; |
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if (wrnvec != NULL) |
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wrnvec = x11_errout; |
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inpcheck = IC_X11; |
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} else { |
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x11_driver.comin = std_comin; |
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x11_driver.comout = std_comout; |
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cmdvec = std_comout; |
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inpcheck = IC_IOCTL; |
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} |
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return(&x11_driver); |
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} |
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|
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|
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static |
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x11_close() /* close our display */ |
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{ |
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cmdvec = NULL; /* reset error vectors */ |
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if (wrnvec != NULL) |
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wrnvec = stderr_v; |
214 |
if (ourdisplay == NULL) |
215 |
return; |
216 |
if (comline != NULL) { |
217 |
xt_close(comline); |
218 |
comline = NULL; |
219 |
} |
220 |
freepixels(); |
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XFreeGC(ourdisplay, ourgc); |
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XDestroyWindow(ourdisplay, gwind); |
223 |
gwind = 0; |
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ourgc = 0; |
225 |
XFreeCursor(ourdisplay, pickcursor); |
226 |
XCloseDisplay(ourdisplay); |
227 |
ourdisplay = NULL; |
228 |
} |
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|
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|
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static |
232 |
x11_clear(xres, yres) /* clear our display */ |
233 |
int xres, yres; |
234 |
{ |
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/* check limits */ |
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if (xres < MINWIDTH) |
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xres = MINWIDTH; |
238 |
if (yres < MINHEIGHT) |
239 |
yres = MINHEIGHT; |
240 |
/* resize window */ |
241 |
if (xres != gwidth || yres != gheight) { |
242 |
XSelectInput(ourdisplay, gwind, 0); |
243 |
XResizeWindow(ourdisplay, gwind, xres, yres+comheight); |
244 |
gwidth = xres; |
245 |
gheight = yres; |
246 |
XFlush(ourdisplay); |
247 |
sleep(2); /* wait for window manager */ |
248 |
XSync(ourdisplay, 1); /* discard input */ |
249 |
} |
250 |
XClearWindow(ourdisplay, gwind); |
251 |
/* reinitialize color table */ |
252 |
if (ourvinfo.class == PseudoColor || ourvinfo.class == GrayScale) |
253 |
if (getpixels() == 0) |
254 |
stderr_v("cannot allocate colors\n"); |
255 |
else |
256 |
new_ctab(ncolors); |
257 |
/* get new command line */ |
258 |
if (comline != NULL) |
259 |
xt_close(comline); |
260 |
if (comheight) { |
261 |
comline = xt_open(ourdisplay, gwind, 0, gheight, gwidth, |
262 |
comheight, 0, ourblack, ourwhite, COMFN); |
263 |
if (comline == NULL) { |
264 |
stderr_v("Cannot open command line window\n"); |
265 |
quit(1); |
266 |
} |
267 |
XSelectInput(ourdisplay, comline->w, ExposureMask); |
268 |
/* remove earmuffs */ |
269 |
XSelectInput(ourdisplay, gwind, |
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StructureNotifyMask|ExposureMask|KeyPressMask|ButtonPressMask); |
271 |
} else /* remove earmuffs */ |
272 |
XSelectInput(ourdisplay, gwind, |
273 |
StructureNotifyMask|ExposureMask|ButtonPressMask); |
274 |
} |
275 |
|
276 |
|
277 |
static |
278 |
x11_paintr(col, xmin, ymin, xmax, ymax) /* fill a rectangle */ |
279 |
COLOR col; |
280 |
int xmin, ymin, xmax, ymax; |
281 |
{ |
282 |
unsigned long pixel; |
283 |
|
284 |
if (!mapped) |
285 |
return; |
286 |
if (ncolors > 0) |
287 |
pixel = pixval[get_pixel(col, xnewcolr)]; |
288 |
else |
289 |
pixel = true_pixel(col); |
290 |
XSetForeground(ourdisplay, ourgc, pixel); |
291 |
XFillRectangle(ourdisplay, gwind, |
292 |
ourgc, xmin, gheight-ymax, xmax-xmin, ymax-ymin); |
293 |
} |
294 |
|
295 |
|
296 |
static |
297 |
x11_flush() /* flush output */ |
298 |
{ |
299 |
char buf[256]; |
300 |
int n; |
301 |
/* check for input */ |
302 |
XNoOp(ourdisplay); |
303 |
n = XPending(ourdisplay); /* from X server */ |
304 |
while (n-- > 0) |
305 |
getevent(); |
306 |
#ifdef FNDELAY |
307 |
if (inpcheck == IC_IOCTL) { /* from stdin */ |
308 |
#ifdef FIONREAD |
309 |
if (ioctl(fileno(stdin), FIONREAD, &n) < 0) { |
310 |
#else |
311 |
if (1) { |
312 |
#endif |
313 |
if (fcntl(fileno(stdin), F_SETFL, FNDELAY) < 0) { |
314 |
stderr_v("Cannot change input mode\n"); |
315 |
quit(1); |
316 |
} |
317 |
inpcheck = IC_READ; |
318 |
} else |
319 |
x11_driver.inpready += n; |
320 |
} |
321 |
if (inpcheck == IC_READ) { |
322 |
n = read(fileno(stdin), buf, sizeof(buf)-1); |
323 |
if (n > 0) { |
324 |
buf[n] = '\0'; |
325 |
tocombuf(buf, &x11_driver); |
326 |
} |
327 |
} |
328 |
#endif |
329 |
} |
330 |
|
331 |
|
332 |
static |
333 |
x11_comin(inp, prompt) /* read in a command line */ |
334 |
char *inp, *prompt; |
335 |
{ |
336 |
if (prompt != NULL) { |
337 |
x11_flush(); /* make sure we get everything */ |
338 |
if (fromcombuf(inp, &x11_driver)) |
339 |
return; |
340 |
xt_puts(prompt, comline); |
341 |
} |
342 |
xt_cursor(comline, TBLKCURS); |
343 |
editline(inp, x11_getc, x11_comout); |
344 |
xt_cursor(comline, TNOCURS); |
345 |
} |
346 |
|
347 |
|
348 |
static |
349 |
x11_comout(outp) /* output a string to command line */ |
350 |
char *outp; |
351 |
{ |
352 |
if (comline == NULL) |
353 |
return; |
354 |
xt_puts(outp, comline); |
355 |
if (outp[strlen(outp)-1] == '\n') |
356 |
XFlush(ourdisplay); |
357 |
} |
358 |
|
359 |
|
360 |
static |
361 |
x11_errout(msg) /* output an error message */ |
362 |
char *msg; |
363 |
{ |
364 |
stderr_v(msg); /* send to stderr also! */ |
365 |
x11_comout(msg); |
366 |
} |
367 |
|
368 |
|
369 |
static |
370 |
std_comin(inp, prompt) /* read in command line from stdin */ |
371 |
char *inp, *prompt; |
372 |
{ |
373 |
extern char *gets(); |
374 |
|
375 |
if (prompt != NULL) { |
376 |
if (fromcombuf(inp, &x11_driver)) |
377 |
return; |
378 |
if (!x11_driver.inpready) |
379 |
fputs(prompt, stdout); |
380 |
} |
381 |
if (gets(inp) == NULL) { |
382 |
strcpy(inp, "quit"); |
383 |
return; |
384 |
} |
385 |
x11_driver.inpready -= strlen(inp) + 1; |
386 |
if (x11_driver.inpready < 0) |
387 |
x11_driver.inpready = 0; |
388 |
} |
389 |
|
390 |
|
391 |
static |
392 |
std_comout(outp) /* write out string to stdout */ |
393 |
char *outp; |
394 |
{ |
395 |
fputs(outp, stdout); |
396 |
fflush(stdout); |
397 |
} |
398 |
|
399 |
|
400 |
static int |
401 |
x11_getcur(xp, yp) /* get cursor position */ |
402 |
int *xp, *yp; |
403 |
{ |
404 |
while (XGrabPointer(ourdisplay, gwind, True, ButtonPressMask, |
405 |
GrabModeAsync, GrabModeAsync, None, pickcursor, |
406 |
CurrentTime) != GrabSuccess) |
407 |
sleep(2); |
408 |
|
409 |
do |
410 |
getevent(); |
411 |
while (c_last <= c_first && levptr(XEvent)->type != ButtonPress); |
412 |
*xp = levptr(XButtonPressedEvent)->x; |
413 |
*yp = gheight-1 - levptr(XButtonPressedEvent)->y; |
414 |
XUngrabPointer(ourdisplay, CurrentTime); |
415 |
XFlush(ourdisplay); /* insure release */ |
416 |
if (c_last > c_first) /* key pressed */ |
417 |
return(x11_getc()); |
418 |
/* button pressed */ |
419 |
if (levptr(XButtonPressedEvent)->button == Button1) |
420 |
return(MB1); |
421 |
if (levptr(XButtonPressedEvent)->button == Button2) |
422 |
return(MB2); |
423 |
if (levptr(XButtonPressedEvent)->button == Button3) |
424 |
return(MB3); |
425 |
return(ABORT); |
426 |
} |
427 |
|
428 |
|
429 |
static |
430 |
xnewcolr(ndx, r, g, b) /* enter a color into hardware table */ |
431 |
int ndx; |
432 |
int r, g, b; |
433 |
{ |
434 |
XColor xcolor; |
435 |
|
436 |
xcolor.pixel = pixval[ndx]; |
437 |
xcolor.red = r << 8; |
438 |
xcolor.green = g << 8; |
439 |
xcolor.blue = b << 8; |
440 |
xcolor.flags = DoRed|DoGreen|DoBlue; |
441 |
|
442 |
XStoreColor(ourdisplay, ourmap, &xcolor); |
443 |
} |
444 |
|
445 |
|
446 |
static int |
447 |
getpixels() /* get the color map */ |
448 |
{ |
449 |
XColor thiscolor; |
450 |
register int i, j; |
451 |
|
452 |
if (ncolors > 0) |
453 |
return(ncolors); |
454 |
if (ourvinfo.visual == DefaultVisual(ourdisplay,ourscreen)) { |
455 |
ourmap = DefaultColormap(ourdisplay,ourscreen); |
456 |
goto loop; |
457 |
} |
458 |
newmap: |
459 |
ourmap = XCreateColormap(ourdisplay,gwind,ourvinfo.visual,AllocNone); |
460 |
loop: |
461 |
for (ncolors = ourvinfo.colormap_size; |
462 |
ncolors > ourvinfo.colormap_size/3; |
463 |
ncolors = ncolors*.937) { |
464 |
pixval = (unsigned long *)malloc(ncolors*sizeof(unsigned long)); |
465 |
if (pixval == NULL) |
466 |
return(ncolors = 0); |
467 |
if (XAllocColorCells(ourdisplay,ourmap,0,NULL,0,pixval,ncolors)) |
468 |
break; |
469 |
free((char *)pixval); |
470 |
pixval = NULL; |
471 |
} |
472 |
if (pixval == NULL) { |
473 |
if (ourmap == DefaultColormap(ourdisplay,ourscreen)) |
474 |
goto newmap; /* try it with our map */ |
475 |
else |
476 |
return(ncolors = 0); /* failed */ |
477 |
} |
478 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
479 |
for (i = 0; i < ncolors; i++) { /* reset black and white */ |
480 |
if (pixval[i] != ourblack && pixval[i] != ourwhite) |
481 |
continue; |
482 |
thiscolor.pixel = pixval[i]; |
483 |
thiscolor.flags = DoRed|DoGreen|DoBlue; |
484 |
XQueryColor(ourdisplay, |
485 |
DefaultColormap(ourdisplay,ourscreen), |
486 |
&thiscolor); |
487 |
XStoreColor(ourdisplay, ourmap, &thiscolor); |
488 |
for (j = i; j+1 < ncolors; j++) |
489 |
pixval[j] = pixval[j+1]; |
490 |
ncolors--; |
491 |
i--; |
492 |
} |
493 |
XSetWindowColormap(ourdisplay, gwind, ourmap); |
494 |
return(ncolors); |
495 |
} |
496 |
|
497 |
|
498 |
static |
499 |
freepixels() /* free our pixels */ |
500 |
{ |
501 |
if (ncolors == 0) |
502 |
return; |
503 |
XFreeColors(ourdisplay,ourmap,pixval,ncolors,0L); |
504 |
free((char *)pixval); |
505 |
pixval = NULL; |
506 |
ncolors = 0; |
507 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
508 |
XFreeColormap(ourdisplay, ourmap); |
509 |
ourmap = 0; |
510 |
} |
511 |
|
512 |
|
513 |
static unsigned long |
514 |
true_pixel(col) /* return true pixel value for color */ |
515 |
COLOR col; |
516 |
{ |
517 |
unsigned long rval; |
518 |
BYTE rgb[3]; |
519 |
|
520 |
map_color(rgb, col); |
521 |
rval = ourvinfo.red_mask*rgb[RED]/255 & ourvinfo.red_mask; |
522 |
rval |= ourvinfo.green_mask*rgb[GRN]/255 & ourvinfo.green_mask; |
523 |
rval |= ourvinfo.blue_mask*rgb[BLU]/255 & ourvinfo.blue_mask; |
524 |
return(rval); |
525 |
} |
526 |
|
527 |
|
528 |
static int |
529 |
x11_getc() /* get a command character */ |
530 |
{ |
531 |
while (c_last <= c_first) { |
532 |
c_first = c_last = 0; /* reset */ |
533 |
getevent(); /* wait for key */ |
534 |
} |
535 |
x11_driver.inpready--; |
536 |
return(c_queue[c_first++]); |
537 |
} |
538 |
|
539 |
|
540 |
static |
541 |
getevent() /* get next event */ |
542 |
{ |
543 |
XNextEvent(ourdisplay, levptr(XEvent)); |
544 |
switch (levptr(XEvent)->type) { |
545 |
case ConfigureNotify: |
546 |
resizewindow(levptr(XConfigureEvent)); |
547 |
break; |
548 |
case UnmapNotify: |
549 |
mapped = 0; |
550 |
freepixels(); |
551 |
break; |
552 |
case MapNotify: |
553 |
if (ourvinfo.class == PseudoColor || |
554 |
ourvinfo.class == GrayScale) |
555 |
if (getpixels() == 0) |
556 |
stderr_v("Cannot allocate colors\n"); |
557 |
else |
558 |
new_ctab(ncolors); |
559 |
mapped = 1; |
560 |
break; |
561 |
case Expose: |
562 |
fixwindow(levptr(XExposeEvent)); |
563 |
break; |
564 |
case KeyPress: |
565 |
getkey(levptr(XKeyPressedEvent)); |
566 |
break; |
567 |
case ButtonPress: |
568 |
break; |
569 |
} |
570 |
} |
571 |
|
572 |
|
573 |
static |
574 |
getkey(ekey) /* get input key */ |
575 |
register XKeyPressedEvent *ekey; |
576 |
{ |
577 |
register int n; |
578 |
|
579 |
n = XLookupString(ekey, c_queue+c_last, sizeof(c_queue)-c_last, |
580 |
NULL, NULL); |
581 |
c_last += n; |
582 |
x11_driver.inpready += n; |
583 |
} |
584 |
|
585 |
|
586 |
static |
587 |
fixwindow(eexp) /* repair damage to window */ |
588 |
register XExposeEvent *eexp; |
589 |
{ |
590 |
char buf[80]; |
591 |
|
592 |
if (eexp->window == gwind) { |
593 |
sprintf(buf, "repaint %d %d %d %d\n", |
594 |
eexp->x, gheight - eexp->y - eexp->height, |
595 |
eexp->x + eexp->width, gheight - eexp->y); |
596 |
tocombuf(buf, &x11_driver); |
597 |
} else if (eexp->window == comline->w) { |
598 |
if (eexp->count == 0) |
599 |
xt_redraw(comline); |
600 |
} |
601 |
} |
602 |
|
603 |
|
604 |
static |
605 |
resizewindow(ersz) /* resize window */ |
606 |
register XConfigureEvent *ersz; |
607 |
{ |
608 |
if (ersz->width == gwidth && ersz->height-comheight == gheight) |
609 |
return; |
610 |
|
611 |
gwidth = ersz->width; |
612 |
gheight = ersz->height-comheight; |
613 |
x11_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth; |
614 |
x11_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight; |
615 |
|
616 |
tocombuf("new\n", &x11_driver); |
617 |
} |