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#ifndef lint
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static char SCCSid[] = "$SunId$ LBL";
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#endif
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/* Copyright (c) 1989 Regents of the University of California */
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/*
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* x11.c - driver for X-windows version 11.3
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*
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* Jan 1990
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*/
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#include <stdio.h>
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#include <sys/ioctl.h>
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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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#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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#define GAMMA 2.2 /* exponent for color correction */
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#define MINWIDTH (32*COMCW) /* minimum graphics window width */
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#define MINHEIGHT MINWIDTH /* minimum graphics window height */
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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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#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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#define ourscreen DefaultScreen(ourdisplay)
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#define ourroot RootWindow(ourdisplay,ourscreen)
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#define levptr(etype) ((etype *)¤tevent)
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static XEvent currentevent; /* current event */
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static int ncolors = 0; /* color table size */
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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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static Display *ourdisplay = NULL; /* our display */
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static XVisualInfo ourvinfo; /* our visual information */
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static Window gwind = 0; /* our graphics window */
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static Cursor pickcursor = 0; /* cursor used for picking */
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static int gwidth, gheight; /* graphics window size */
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static TEXTWIND *comline = NULL; /* our command line */
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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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static GC ourgc = 0; /* our graphics context for drawing */
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static Colormap ourmap = 0; /* our color map */
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extern char *malloc(), *getcombuf();
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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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static struct driver x11_driver = {
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x11_close, x11_clear, x11_paintr, x11_getcur,
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x11_comout, x11_comin, x11_flush, 1.0
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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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int nplanes;
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XSetWindowAttributes ourwinattr;
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XWMHints ourxwmhints;
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XSizeHints oursizhints;
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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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if (nplanes < 4) {
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stderr_v("not enough colors\n");
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return(NULL);
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} else 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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} else {
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ourblack = 0;
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ourwhite = ~0;
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}
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make_gmap(GAMMA);
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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 a waste! */
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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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cmdvec = x11_comout; /* set error vectors */
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if (wrnvec != NULL)
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wrnvec = x11_errout;
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return(&x11_driver);
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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;
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if (ourdisplay == NULL)
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return;
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if (comline != NULL) {
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xt_close(comline);
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comline = NULL;
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}
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freepixels();
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XFreeGC(ourdisplay, ourgc);
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XDestroyWindow(ourdisplay, gwind);
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gwind = 0;
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ourgc = 0;
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XFreeCursor(ourdisplay, pickcursor);
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XCloseDisplay(ourdisplay);
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ourdisplay = NULL;
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}
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static
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x11_clear(xres, yres) /* clear our display */
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int xres, yres;
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{
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/* check limits */
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if (xres < MINWIDTH)
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xres = MINWIDTH;
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if (yres < MINHEIGHT)
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yres = MINHEIGHT;
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/* resize window */
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if (xres != gwidth || yres != gheight) {
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XSelectInput(ourdisplay, gwind, 0);
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XResizeWindow(ourdisplay, gwind, xres, yres+COMHEIGHT);
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gwidth = xres;
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gheight = yres;
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XFlush(ourdisplay);
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sleep(2); /* wait for window manager */
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XSync(ourdisplay, 1); /* discard input */
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}
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XClearWindow(ourdisplay, gwind);
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/* reinitialize color table */
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if (ourvinfo.class == PseudoColor || ourvinfo.class == GrayScale)
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if (getpixels() == 0)
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stderr_v("cannot allocate colors\n");
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else
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new_ctab(ncolors);
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/* get new command line */
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if (comline != NULL)
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xt_close(comline);
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comline = xt_open(ourdisplay, gwind, 0, gheight,
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gwidth, COMHEIGHT, 0, ourblack, ourwhite, COMFN);
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if (comline == NULL) {
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stderr_v("Cannot open command line window\n");
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quit(1);
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}
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XSelectInput(ourdisplay, comline->w, ExposureMask);
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/* remove earmuffs */
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XSelectInput(ourdisplay, gwind,
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StructureNotifyMask|ExposureMask|KeyPressMask|ButtonPressMask);
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}
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static
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x11_paintr(col, xmin, ymin, xmax, ymax) /* fill a rectangle */
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COLOR col;
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int xmin, ymin, xmax, ymax;
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{
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extern int xnewcolr(); /* pixel assignment routine */
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extern unsigned long true_pixel();
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unsigned long pixel;
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if (ncolors > 0)
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pixel = pixval[get_pixel(col, xnewcolr)];
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else if (ourvinfo.class == TrueColor || ourvinfo.class == DirectColor)
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pixel = true_pixel(col);
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else
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return;
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XSetForeground(ourdisplay, ourgc, pixel);
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XFillRectangle(ourdisplay, gwind,
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ourgc, xmin, gheight-ymax, xmax-xmin, ymax-ymin);
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}
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| 245 |
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| 246 |
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static
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x11_flush() /* flush output */
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{
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XNoOp(ourdisplay);
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while (XPending(ourdisplay) > 0)
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getevent();
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}
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| 255 |
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| 256 |
static
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x11_comin(inp, prompt) /* read in a command line */
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char *inp, *prompt;
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| 259 |
{
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| 260 |
extern int x11_getc();
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| 261 |
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| 262 |
if (prompt != NULL)
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| 263 |
if (fromcombuf(inp, &x11_driver))
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| 264 |
return;
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| 265 |
else
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| 266 |
xt_puts(prompt, comline);
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| 267 |
xt_cursor(comline, TBLKCURS);
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| 268 |
editline(inp, x11_getc, x11_comout);
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| 269 |
xt_cursor(comline, TNOCURS);
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| 270 |
}
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| 271 |
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| 272 |
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| 273 |
static
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| 274 |
x11_comout(out) /* output a string to command line */
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| 275 |
char *out;
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| 276 |
{
|
| 277 |
if (comline == NULL)
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| 278 |
return;
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| 279 |
xt_puts(out, comline);
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| 280 |
if (out[strlen(out)-1] == '\n')
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| 281 |
XFlush(ourdisplay);
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| 282 |
}
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| 283 |
|
| 284 |
|
| 285 |
static
|
| 286 |
x11_errout(msg) /* output an error message */
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| 287 |
char *msg;
|
| 288 |
{
|
| 289 |
stderr_v(msg); /* send to stderr also! */
|
| 290 |
x11_comout(msg);
|
| 291 |
}
|
| 292 |
|
| 293 |
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| 294 |
static int
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| 295 |
x11_getcur(xp, yp) /* get cursor position */
|
| 296 |
int *xp, *yp;
|
| 297 |
{
|
| 298 |
while (XGrabPointer(ourdisplay, gwind, True, ButtonPressMask,
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| 299 |
GrabModeAsync, GrabModeAsync, None, pickcursor,
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| 300 |
CurrentTime) != GrabSuccess)
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| 301 |
sleep(2);
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| 302 |
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| 303 |
do
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| 304 |
getevent();
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| 305 |
while (c_last <= c_first && levptr(XEvent)->type != ButtonPress);
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| 306 |
*xp = levptr(XButtonPressedEvent)->x;
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| 307 |
*yp = gheight-1 - levptr(XButtonPressedEvent)->y;
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| 308 |
XUngrabPointer(ourdisplay, CurrentTime);
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| 309 |
XFlush(ourdisplay); /* insure release */
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| 310 |
if (c_last > c_first) /* key pressed */
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| 311 |
return(x11_getc());
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| 312 |
/* button pressed */
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| 313 |
if (levptr(XButtonPressedEvent)->button & Button1)
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| 314 |
return(MB1);
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| 315 |
if (levptr(XButtonPressedEvent)->button & Button2)
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| 316 |
return(MB2);
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| 317 |
if (levptr(XButtonPressedEvent)->button & Button3)
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| 318 |
return(MB3);
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| 319 |
if (levptr(XButtonPressedEvent)->button & (Button4|Button5))
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| 320 |
return(MB1);
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| 321 |
return(ABORT);
|
| 322 |
}
|
| 323 |
|
| 324 |
|
| 325 |
static
|
| 326 |
xnewcolr(ndx, r, g, b) /* enter a color into hardware table */
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| 327 |
int ndx;
|
| 328 |
int r, g, b;
|
| 329 |
{
|
| 330 |
XColor xcolor;
|
| 331 |
|
| 332 |
xcolor.pixel = pixval[ndx];
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| 333 |
xcolor.red = r << 8;
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| 334 |
xcolor.green = g << 8;
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| 335 |
xcolor.blue = b << 8;
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| 336 |
xcolor.flags = DoRed|DoGreen|DoBlue;
|
| 337 |
|
| 338 |
XStoreColor(ourdisplay, ourmap, &xcolor);
|
| 339 |
}
|
| 340 |
|
| 341 |
|
| 342 |
static int
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| 343 |
getpixels() /* get the color map */
|
| 344 |
{
|
| 345 |
XColor thiscolor;
|
| 346 |
register int i, j;
|
| 347 |
|
| 348 |
if (ncolors > 0)
|
| 349 |
return(ncolors);
|
| 350 |
if (ourvinfo.visual == DefaultVisual(ourdisplay,ourscreen)) {
|
| 351 |
ourmap = DefaultColormap(ourdisplay,ourscreen);
|
| 352 |
goto loop;
|
| 353 |
}
|
| 354 |
newmap:
|
| 355 |
ourmap = XCreateColormap(ourdisplay,gwind,ourvinfo.visual,AllocNone);
|
| 356 |
loop:
|
| 357 |
for (ncolors = ourvinfo.colormap_size;
|
| 358 |
ncolors > ourvinfo.colormap_size/3;
|
| 359 |
ncolors = ncolors*.937) {
|
| 360 |
pixval = (unsigned long *)malloc(ncolors*sizeof(unsigned long));
|
| 361 |
if (pixval == NULL)
|
| 362 |
return(ncolors = 0);
|
| 363 |
if (XAllocColorCells(ourdisplay,ourmap,0,NULL,0,
|
| 364 |
pixval,ncolors) != 0)
|
| 365 |
break;
|
| 366 |
free((char *)pixval);
|
| 367 |
pixval = NULL;
|
| 368 |
}
|
| 369 |
if (pixval == NULL) {
|
| 370 |
if (ourmap == DefaultColormap(ourdisplay,ourscreen))
|
| 371 |
goto newmap; /* try it with our map */
|
| 372 |
else
|
| 373 |
return(ncolors = 0); /* failed */
|
| 374 |
}
|
| 375 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen))
|
| 376 |
for (i = 0; i < ncolors; i++) { /* reset black and white */
|
| 377 |
if (pixval[i] != ourblack && pixval[i] != ourwhite)
|
| 378 |
continue;
|
| 379 |
thiscolor.pixel = pixval[i];
|
| 380 |
thiscolor.flags = DoRed|DoGreen|DoBlue;
|
| 381 |
XQueryColor(ourdisplay,
|
| 382 |
DefaultColormap(ourdisplay,ourscreen),
|
| 383 |
&thiscolor);
|
| 384 |
XStoreColor(ourdisplay, ourmap, &thiscolor);
|
| 385 |
for (j = i; j+1 < ncolors; j++)
|
| 386 |
pixval[j] = pixval[j+1];
|
| 387 |
ncolors--;
|
| 388 |
i--;
|
| 389 |
}
|
| 390 |
XSetWindowColormap(ourdisplay, gwind, ourmap);
|
| 391 |
return(ncolors);
|
| 392 |
}
|
| 393 |
|
| 394 |
|
| 395 |
static
|
| 396 |
freepixels() /* free our pixels */
|
| 397 |
{
|
| 398 |
if (ncolors == 0)
|
| 399 |
return;
|
| 400 |
XFreeColors(ourdisplay,ourmap,pixval,ncolors,0L);
|
| 401 |
ncolors = 0;
|
| 402 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen))
|
| 403 |
XFreeColormap(ourdisplay, ourmap);
|
| 404 |
ourmap = 0;
|
| 405 |
}
|
| 406 |
|
| 407 |
|
| 408 |
static unsigned long
|
| 409 |
true_pixel(col) /* return true pixel value for color */
|
| 410 |
COLOR col;
|
| 411 |
{
|
| 412 |
unsigned long rval;
|
| 413 |
BYTE rgb[3];
|
| 414 |
|
| 415 |
map_color(rgb, col);
|
| 416 |
rval = ourvinfo.red_mask*rgb[RED]/255 & ourvinfo.red_mask;
|
| 417 |
rval |= ourvinfo.green_mask*rgb[GRN]/255 & ourvinfo.green_mask;
|
| 418 |
rval |= ourvinfo.blue_mask*rgb[BLU]/255 & ourvinfo.blue_mask;
|
| 419 |
return(rval);
|
| 420 |
}
|
| 421 |
|
| 422 |
|
| 423 |
static int
|
| 424 |
x11_getc() /* get a command character */
|
| 425 |
{
|
| 426 |
while (c_last <= c_first) {
|
| 427 |
c_first = c_last = 0; /* reset */
|
| 428 |
getevent(); /* wait for key */
|
| 429 |
}
|
| 430 |
x11_driver.inpready--;
|
| 431 |
return(c_queue[c_first++]);
|
| 432 |
}
|
| 433 |
|
| 434 |
|
| 435 |
static
|
| 436 |
getevent() /* get next event */
|
| 437 |
{
|
| 438 |
XNextEvent(ourdisplay, levptr(XEvent));
|
| 439 |
switch (levptr(XEvent)->type) {
|
| 440 |
case ConfigureNotify:
|
| 441 |
resizewindow(levptr(XConfigureEvent));
|
| 442 |
break;
|
| 443 |
case UnmapNotify:
|
| 444 |
freepixels();
|
| 445 |
break;
|
| 446 |
case MapNotify:
|
| 447 |
if (ourvinfo.class == PseudoColor ||
|
| 448 |
ourvinfo.class == GrayScale)
|
| 449 |
if (getpixels() == 0)
|
| 450 |
stderr_v("Cannot allocate colors\n");
|
| 451 |
else
|
| 452 |
new_ctab(ncolors);
|
| 453 |
break;
|
| 454 |
case Expose:
|
| 455 |
fixwindow(levptr(XExposeEvent));
|
| 456 |
break;
|
| 457 |
case KeyPress:
|
| 458 |
getkey(levptr(XKeyPressedEvent));
|
| 459 |
break;
|
| 460 |
case ButtonPress:
|
| 461 |
break;
|
| 462 |
}
|
| 463 |
}
|
| 464 |
|
| 465 |
|
| 466 |
static
|
| 467 |
getkey(ekey) /* get input key */
|
| 468 |
register XKeyPressedEvent *ekey;
|
| 469 |
{
|
| 470 |
register int n;
|
| 471 |
|
| 472 |
n = XLookupString(ekey, c_queue+c_last, sizeof(c_queue)-c_last,
|
| 473 |
NULL, NULL);
|
| 474 |
c_last += n;
|
| 475 |
x11_driver.inpready += n;
|
| 476 |
}
|
| 477 |
|
| 478 |
|
| 479 |
static
|
| 480 |
fixwindow(eexp) /* repair damage to window */
|
| 481 |
register XExposeEvent *eexp;
|
| 482 |
{
|
| 483 |
if (eexp->window == gwind) {
|
| 484 |
sprintf(getcombuf(&x11_driver), "repaint %d %d %d %d\n",
|
| 485 |
eexp->x, gheight - eexp->y - eexp->height,
|
| 486 |
eexp->x + eexp->width, gheight - eexp->y);
|
| 487 |
} else if (eexp->window == comline->w) {
|
| 488 |
if (eexp->count == 0)
|
| 489 |
xt_redraw(comline);
|
| 490 |
}
|
| 491 |
}
|
| 492 |
|
| 493 |
|
| 494 |
static
|
| 495 |
resizewindow(ersz) /* resize window */
|
| 496 |
register XConfigureEvent *ersz;
|
| 497 |
{
|
| 498 |
if (ersz->width == gwidth && ersz->height-COMHEIGHT == gheight)
|
| 499 |
return;
|
| 500 |
|
| 501 |
gwidth = ersz->width;
|
| 502 |
gheight = ersz->height-COMHEIGHT;
|
| 503 |
x11_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth;
|
| 504 |
x11_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight;
|
| 505 |
|
| 506 |
strcpy(getcombuf(&x11_driver), "new\n");
|
| 507 |
}
|
