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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 |
| 6 |
|
| 7 |
/* |
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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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|
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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 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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extern char *malloc(), *getcombuf(); |
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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 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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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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|
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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("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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/* 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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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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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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|
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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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|
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|
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static |
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x11_paintr(col, xmin, ymin, xmax, ymax) /* fill a rectangle */ |
| 244 |
COLOR col; |
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int xmin, ymin, xmax, ymax; |
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{ |
| 247 |
unsigned long pixel; |
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|
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if (!mapped) |
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return; |
| 251 |
if (ncolors > 0) |
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pixel = pixval[get_pixel(col, xnewcolr)]; |
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else |
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pixel = true_pixel(col); |
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XSetForeground(ourdisplay, ourgc, pixel); |
| 256 |
XFillRectangle(ourdisplay, gwind, |
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ourgc, xmin, gheight-ymax, xmax-xmin, ymax-ymin); |
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} |
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|
| 260 |
|
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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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|
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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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if (prompt != NULL) |
| 275 |
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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|
| 284 |
|
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static |
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x11_comout(out) /* output a string to command line */ |
| 287 |
char *out; |
| 288 |
{ |
| 289 |
if (comline == NULL) |
| 290 |
return; |
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xt_puts(out, comline); |
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if (out[strlen(out)-1] == '\n') |
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XFlush(ourdisplay); |
| 294 |
} |
| 295 |
|
| 296 |
|
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static |
| 298 |
x11_errout(msg) /* output an error message */ |
| 299 |
char *msg; |
| 300 |
{ |
| 301 |
stderr_v(msg); /* send to stderr also! */ |
| 302 |
x11_comout(msg); |
| 303 |
} |
| 304 |
|
| 305 |
|
| 306 |
static int |
| 307 |
x11_getcur(xp, yp) /* get cursor position */ |
| 308 |
int *xp, *yp; |
| 309 |
{ |
| 310 |
while (XGrabPointer(ourdisplay, gwind, True, ButtonPressMask, |
| 311 |
GrabModeAsync, GrabModeAsync, None, pickcursor, |
| 312 |
CurrentTime) != GrabSuccess) |
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sleep(2); |
| 314 |
|
| 315 |
do |
| 316 |
getevent(); |
| 317 |
while (c_last <= c_first && levptr(XEvent)->type != ButtonPress); |
| 318 |
*xp = levptr(XButtonPressedEvent)->x; |
| 319 |
*yp = gheight-1 - levptr(XButtonPressedEvent)->y; |
| 320 |
XUngrabPointer(ourdisplay, CurrentTime); |
| 321 |
XFlush(ourdisplay); /* insure release */ |
| 322 |
if (c_last > c_first) /* key pressed */ |
| 323 |
return(x11_getc()); |
| 324 |
/* button pressed */ |
| 325 |
if (levptr(XButtonPressedEvent)->button == Button1) |
| 326 |
return(MB1); |
| 327 |
if (levptr(XButtonPressedEvent)->button == Button2) |
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return(MB2); |
| 329 |
if (levptr(XButtonPressedEvent)->button == Button3) |
| 330 |
return(MB3); |
| 331 |
return(ABORT); |
| 332 |
} |
| 333 |
|
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|
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static |
| 336 |
xnewcolr(ndx, r, g, b) /* enter a color into hardware table */ |
| 337 |
int ndx; |
| 338 |
int r, g, b; |
| 339 |
{ |
| 340 |
XColor xcolor; |
| 341 |
|
| 342 |
xcolor.pixel = pixval[ndx]; |
| 343 |
xcolor.red = r << 8; |
| 344 |
xcolor.green = g << 8; |
| 345 |
xcolor.blue = b << 8; |
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xcolor.flags = DoRed|DoGreen|DoBlue; |
| 347 |
|
| 348 |
XStoreColor(ourdisplay, ourmap, &xcolor); |
| 349 |
} |
| 350 |
|
| 351 |
|
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static int |
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getpixels() /* get the color map */ |
| 354 |
{ |
| 355 |
XColor thiscolor; |
| 356 |
register int i, j; |
| 357 |
|
| 358 |
if (ncolors > 0) |
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return(ncolors); |
| 360 |
if (ourvinfo.visual == DefaultVisual(ourdisplay,ourscreen)) { |
| 361 |
ourmap = DefaultColormap(ourdisplay,ourscreen); |
| 362 |
goto loop; |
| 363 |
} |
| 364 |
newmap: |
| 365 |
ourmap = XCreateColormap(ourdisplay,gwind,ourvinfo.visual,AllocNone); |
| 366 |
loop: |
| 367 |
for (ncolors = ourvinfo.colormap_size; |
| 368 |
ncolors > ourvinfo.colormap_size/3; |
| 369 |
ncolors = ncolors*.937) { |
| 370 |
pixval = (unsigned long *)malloc(ncolors*sizeof(unsigned long)); |
| 371 |
if (pixval == NULL) |
| 372 |
return(ncolors = 0); |
| 373 |
if (XAllocColorCells(ourdisplay,ourmap,0,NULL,0,pixval,ncolors)) |
| 374 |
break; |
| 375 |
free((char *)pixval); |
| 376 |
pixval = NULL; |
| 377 |
} |
| 378 |
if (pixval == NULL) { |
| 379 |
if (ourmap == DefaultColormap(ourdisplay,ourscreen)) |
| 380 |
goto newmap; /* try it with our map */ |
| 381 |
else |
| 382 |
return(ncolors = 0); /* failed */ |
| 383 |
} |
| 384 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
| 385 |
for (i = 0; i < ncolors; i++) { /* reset black and white */ |
| 386 |
if (pixval[i] != ourblack && pixval[i] != ourwhite) |
| 387 |
continue; |
| 388 |
thiscolor.pixel = pixval[i]; |
| 389 |
thiscolor.flags = DoRed|DoGreen|DoBlue; |
| 390 |
XQueryColor(ourdisplay, |
| 391 |
DefaultColormap(ourdisplay,ourscreen), |
| 392 |
&thiscolor); |
| 393 |
XStoreColor(ourdisplay, ourmap, &thiscolor); |
| 394 |
for (j = i; j+1 < ncolors; j++) |
| 395 |
pixval[j] = pixval[j+1]; |
| 396 |
ncolors--; |
| 397 |
i--; |
| 398 |
} |
| 399 |
XSetWindowColormap(ourdisplay, gwind, ourmap); |
| 400 |
return(ncolors); |
| 401 |
} |
| 402 |
|
| 403 |
|
| 404 |
static |
| 405 |
freepixels() /* free our pixels */ |
| 406 |
{ |
| 407 |
if (ncolors == 0) |
| 408 |
return; |
| 409 |
XFreeColors(ourdisplay,ourmap,pixval,ncolors,0L); |
| 410 |
free((char *)pixval); |
| 411 |
pixval = NULL; |
| 412 |
ncolors = 0; |
| 413 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
| 414 |
XFreeColormap(ourdisplay, ourmap); |
| 415 |
ourmap = 0; |
| 416 |
} |
| 417 |
|
| 418 |
|
| 419 |
static unsigned long |
| 420 |
true_pixel(col) /* return true pixel value for color */ |
| 421 |
COLOR col; |
| 422 |
{ |
| 423 |
unsigned long rval; |
| 424 |
BYTE rgb[3]; |
| 425 |
|
| 426 |
map_color(rgb, col); |
| 427 |
rval = ourvinfo.red_mask*rgb[RED]/255 & ourvinfo.red_mask; |
| 428 |
rval |= ourvinfo.green_mask*rgb[GRN]/255 & ourvinfo.green_mask; |
| 429 |
rval |= ourvinfo.blue_mask*rgb[BLU]/255 & ourvinfo.blue_mask; |
| 430 |
return(rval); |
| 431 |
} |
| 432 |
|
| 433 |
|
| 434 |
static int |
| 435 |
x11_getc() /* get a command character */ |
| 436 |
{ |
| 437 |
while (c_last <= c_first) { |
| 438 |
c_first = c_last = 0; /* reset */ |
| 439 |
getevent(); /* wait for key */ |
| 440 |
} |
| 441 |
x11_driver.inpready--; |
| 442 |
return(c_queue[c_first++]); |
| 443 |
} |
| 444 |
|
| 445 |
|
| 446 |
static |
| 447 |
getevent() /* get next event */ |
| 448 |
{ |
| 449 |
XNextEvent(ourdisplay, levptr(XEvent)); |
| 450 |
switch (levptr(XEvent)->type) { |
| 451 |
case ConfigureNotify: |
| 452 |
resizewindow(levptr(XConfigureEvent)); |
| 453 |
break; |
| 454 |
case UnmapNotify: |
| 455 |
mapped = 0; |
| 456 |
freepixels(); |
| 457 |
break; |
| 458 |
case MapNotify: |
| 459 |
if (ourvinfo.class == PseudoColor || |
| 460 |
ourvinfo.class == GrayScale) |
| 461 |
if (getpixels() == 0) |
| 462 |
stderr_v("Cannot allocate colors\n"); |
| 463 |
else |
| 464 |
new_ctab(ncolors); |
| 465 |
mapped = 1; |
| 466 |
break; |
| 467 |
case Expose: |
| 468 |
fixwindow(levptr(XExposeEvent)); |
| 469 |
break; |
| 470 |
case KeyPress: |
| 471 |
getkey(levptr(XKeyPressedEvent)); |
| 472 |
break; |
| 473 |
case ButtonPress: |
| 474 |
break; |
| 475 |
} |
| 476 |
} |
| 477 |
|
| 478 |
|
| 479 |
static |
| 480 |
getkey(ekey) /* get input key */ |
| 481 |
register XKeyPressedEvent *ekey; |
| 482 |
{ |
| 483 |
register int n; |
| 484 |
|
| 485 |
n = XLookupString(ekey, c_queue+c_last, sizeof(c_queue)-c_last, |
| 486 |
NULL, NULL); |
| 487 |
c_last += n; |
| 488 |
x11_driver.inpready += n; |
| 489 |
} |
| 490 |
|
| 491 |
|
| 492 |
static |
| 493 |
fixwindow(eexp) /* repair damage to window */ |
| 494 |
register XExposeEvent *eexp; |
| 495 |
{ |
| 496 |
if (eexp->window == gwind) { |
| 497 |
sprintf(getcombuf(&x11_driver), "repaint %d %d %d %d\n", |
| 498 |
eexp->x, gheight - eexp->y - eexp->height, |
| 499 |
eexp->x + eexp->width, gheight - eexp->y); |
| 500 |
} else if (eexp->window == comline->w) { |
| 501 |
if (eexp->count == 0) |
| 502 |
xt_redraw(comline); |
| 503 |
} |
| 504 |
} |
| 505 |
|
| 506 |
|
| 507 |
static |
| 508 |
resizewindow(ersz) /* resize window */ |
| 509 |
register XConfigureEvent *ersz; |
| 510 |
{ |
| 511 |
if (ersz->width == gwidth && ersz->height-COMHEIGHT == gheight) |
| 512 |
return; |
| 513 |
|
| 514 |
gwidth = ersz->width; |
| 515 |
gheight = ersz->height-COMHEIGHT; |
| 516 |
x11_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth; |
| 517 |
x11_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight; |
| 518 |
|
| 519 |
strcpy(getcombuf(&x11_driver), "new\n"); |
| 520 |
} |
