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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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/* Copyright (c) 1989 Regents of the University of California */ |
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|
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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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|
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#include <stdio.h> |
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|
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#include <sys/ioctl.h> |
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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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|
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#define GAMMA 2.2 /* exponent for color correction */ |
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|
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#define MINWIDTH (4*COMCW) /* minimum graphics window width */ |
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#define MINHEIGHT 16 /* 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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#define ourwhite WhitePixel(ourdisplay,ourscreen) |
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#define ourblack BlackPixel(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 *pixval = NULL; /* allocated pixels */ |
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|
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static Display *ourdisplay = NULL; /* our display */ |
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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 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; /* our color map */ |
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|
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extern char *malloc(); |
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|
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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 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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|
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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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XWMHints ourxwmhints; |
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Pixmap bmCursorSrc, bmCursorMsk; |
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|
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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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if (DisplayPlanes(ourdisplay, ourscreen) < 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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ourmap = DefaultColormap(ourdisplay,ourscreen); |
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make_gmap(GAMMA); /* make color map */ |
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/* create a cursor */ |
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pickcursor = XCreateFontCursor (ourdisplay, XC_diamond_cross); |
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/* open window */ |
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gwind = XCreateSimpleWindow(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, ourblack, ourwhite); |
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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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ourgc = XCreateGC(ourdisplay, gwind, 0, NULL); |
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ourxwmhints.flags = InputHint; |
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ourxwmhints.input = True; |
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XSetWMHints(ourdisplay, gwind, &ourxwmhints); |
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XSelectInput(ourdisplay, gwind, ExposureMask); |
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XMapWindow(ourdisplay, gwind); |
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XWindowEvent(ourdisplay, gwind, ExposureMask, levptr(XExposeEvent)); |
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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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|
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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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if (gwind != 0) { |
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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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} |
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XFreeCursor(ourdisplay, pickcursor); |
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freepixels(); |
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XCloseDisplay(ourdisplay); |
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ourdisplay = NULL; |
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} |
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|
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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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if (xres != gwidth || yres != gheight) { /* change window */ |
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if (comline != NULL) |
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xt_close(comline); |
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XSelectInput(ourdisplay, gwind, 0); |
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XResizeWindow(ourdisplay, gwind, xres, yres+COMHEIGHT); |
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comline = xt_open(ourdisplay, |
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DefaultGC(ourdisplay,ourscreen), |
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gwind, 0, yres, xres, COMHEIGHT, 0, 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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gwidth = xres; |
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gheight = yres; |
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XSync(ourdisplay, 1); /* discard input */ |
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sleep(2); /* wait for window manager */ |
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} |
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XClearWindow(ourdisplay, gwind); |
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/* reinitialize color table */ |
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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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|
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XSelectInput(ourdisplay, gwind, |
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StructureNotifyMask|ExposureMask|KeyPressMask|ButtonPressMask); |
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} |
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|
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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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|
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if (ncolors > 0) { |
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XSetForeground(ourdisplay, ourgc, |
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pixval[get_pixel(col, xnewcolr)]); |
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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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} |
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|
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|
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static |
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x11_flush() /* flush output */ |
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{ |
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if (ncolors <= 0) /* output necessary for death */ |
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XFillRectangle(ourdisplay, gwind, ourgc, 0, 0, 1 ,1); |
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while (XPending(ourdisplay) > 0) |
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getevent(); |
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} |
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|
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|
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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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{ |
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int x11_getc(), x11_comout(); |
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|
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if (prompt != NULL) |
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if (fromcombuf(inp, &x11_driver)) |
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return; |
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else |
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xt_puts(prompt, comline); |
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xt_cursor(comline, TBLKCURS); |
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editline(inp, x11_getc, x11_comout); |
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xt_cursor(comline, TNOCURS); |
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} |
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|
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|
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static |
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x11_comout(out) /* output a string to command line */ |
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char *out; |
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{ |
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if (comline != NULL) |
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xt_puts(out, comline); |
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XFlush(ourdisplay); |
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} |
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|
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|
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static |
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x11_errout(msg) /* output an error message */ |
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char *msg; |
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{ |
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x11_comout(msg); |
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stderr_v(msg); /* send to stderr also! */ |
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} |
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|
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|
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static int |
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x11_getcur(xp, yp) /* get cursor position */ |
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int *xp, *yp; |
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{ |
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while (XGrabPointer(ourdisplay, gwind, True, ButtonPressMask, |
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GrabModeAsync, GrabModeAsync, None, pickcursor, |
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CurrentTime) != GrabSuccess) |
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sleep(2); |
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|
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do |
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getevent(); |
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while (c_last <= c_first && levptr(XEvent)->type != ButtonPress); |
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*xp = levptr(XButtonPressedEvent)->x; |
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*yp = gheight-1 - levptr(XButtonPressedEvent)->y; |
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XUngrabPointer(ourdisplay, CurrentTime); |
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XFlush(ourdisplay); /* insure release */ |
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if (c_last > c_first) /* key pressed */ |
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return(x11_getc()); |
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/* button pressed */ |
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if (levptr(XButtonPressedEvent)->button & Button1) |
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return(MB1); |
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if (levptr(XButtonPressedEvent)->button & Button2) |
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return(MB2); |
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if (levptr(XButtonPressedEvent)->button & Button3) |
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return(MB3); |
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if (levptr(XButtonPressedEvent)->button & (Button4|Button5)) |
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return(MB1); |
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return(ABORT); |
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} |
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|
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|
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static |
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xnewcolr(ndx, r, g, b) /* enter a color into hardware table */ |
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int ndx; |
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int r, g, b; |
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{ |
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XColor xcolor; |
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|
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xcolor.pixel = pixval[ndx]; |
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xcolor.red = r << 8; |
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xcolor.green = g << 8; |
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xcolor.blue = b << 8; |
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xcolor.flags = DoRed|DoGreen|DoBlue; |
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|
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XStoreColor(ourdisplay, ourmap, &xcolor); |
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} |
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|
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|
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static int |
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getpixels() /* get the color map */ |
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{ |
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Visual *ourvis = DefaultVisual(ourdisplay,ourscreen); |
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|
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if (ncolors > 0) |
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return(ncolors); |
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for (ncolors=(ourvis->map_entries)-3; ncolors>12; ncolors=ncolors*.937){ |
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pixval = (int *)malloc(ncolors*sizeof(int)); |
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if (pixval == NULL) |
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break; |
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if (XAllocColorCells(ourdisplay,ourmap,0,NULL,0, |
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pixval,ncolors) != 0) |
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return(ncolors); |
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free((char *)pixval); |
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} |
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return(ncolors = 0); |
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} |
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|
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|
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static |
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freepixels() /* free our pixels */ |
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{ |
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if (ncolors == 0) |
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return; |
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XFreeColors(ourdisplay,ourmap,pixval,ncolors,0L); |
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ncolors = 0; |
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} |
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|
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|
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static int |
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x11_getc() /* get a command character */ |
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{ |
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while (c_last <= c_first) { |
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c_first = c_last = 0; /* reset */ |
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getevent(); /* wait for key */ |
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} |
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x11_driver.inpready--; |
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return(c_queue[c_first++]); |
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} |
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|
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|
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static |
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getevent() /* get next event */ |
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{ |
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XNextEvent(ourdisplay, levptr(XEvent)); |
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switch (levptr(XEvent)->type) { |
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case ConfigureNotify: |
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resizewindow(levptr(XConfigureEvent)); |
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break; |
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case UnmapNotify: |
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freepixels(); |
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break; |
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case MapNotify: |
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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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break; |
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case Expose: |
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fixwindow(levptr(XExposeEvent)); |
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break; |
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case KeyPress: |
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getkey(levptr(XKeyPressedEvent)); |
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break; |
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case ButtonPress: |
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break; |
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} |
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} |
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|
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|
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static |
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getkey(ekey) /* get input key */ |
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register XKeyPressedEvent *ekey; |
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{ |
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c_last += XLookupString(ekey, c_queue+c_last, sizeof(c_queue)-c_last, |
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NULL, NULL); |
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x11_driver.inpready = c_last-c_first; |
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} |
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|
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|
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static |
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fixwindow(eexp) /* repair damage to window */ |
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register XExposeEvent *eexp; |
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{ |
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if (eexp->window == gwind) { |
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sprintf(getcombuf(&x11_driver), "repaint %d %d %d %d\n", |
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eexp->x, gheight - eexp->y - eexp->height, |
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eexp->x + eexp->width, gheight - eexp->y); |
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} else if (eexp->window == comline->w) { |
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if (eexp->count == 0) |
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xt_redraw(comline); |
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} |
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} |
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|
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|
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static |
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resizewindow(ersz) /* resize window */ |
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register XConfigureEvent *ersz; |
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{ |
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if (ersz->width == gwidth && ersz->height-COMHEIGHT == gheight) |
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return; |
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|
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gwidth = ersz->width; |
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gheight = ersz->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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|
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strcpy(getcombuf(&x11_driver), "new\n"); |
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} |
