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greg |
1.1 |
#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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greg |
1.4 |
* x11.c - driver for X-windows version 11.3 |
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greg |
1.1 |
* |
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greg |
1.4 |
* Jan 1990 |
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greg |
1.1 |
*/ |
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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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greg |
1.4 |
#include <X11/cursorfont.h> |
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#include <X11/Xutil.h> |
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greg |
1.1 |
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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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#define GAMMA 2.2 /* exponent for color correction */ |
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greg |
1.6 |
#define MINWIDTH (32*COMCW) /* minimum graphics window width */ |
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#define MINHEIGHT MINWIDTH /* minimum graphics window height */ |
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greg |
1.4 |
|
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greg |
1.1 |
#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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greg |
1.4 |
#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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#define levptr(etype) ((etype *)¤tevent) |
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greg |
1.1 |
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greg |
1.4 |
static XEvent currentevent; /* current event */ |
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greg |
1.1 |
|
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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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static Display *ourdisplay = NULL; /* our display */ |
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greg |
1.6 |
static Visual *ourvisual; /* our visual structure */ |
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1.1 |
static Window gwind = 0; /* our graphics window */ |
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static Cursor pickcursor = 0; /* cursor used for picking */ |
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greg |
1.4 |
static int gwidth, gheight; /* graphics window size */ |
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greg |
1.1 |
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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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greg |
1.6 |
static Colormap ourmap = 0; /* our color map */ |
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1.1 |
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extern char *malloc(); |
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int x11_close(), x11_clear(), x11_paintr(), x11_errout(), |
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greg |
1.5 |
x11_getcur(), x11_comout(), x11_comin(), x11_flush(); |
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greg |
1.1 |
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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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1.5 |
x11_comout, x11_comin, x11_flush, 1.0 |
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1.1 |
}; |
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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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greg |
1.6 |
int nplanes; |
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XVisualInfo ourvinfo; |
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greg |
1.4 |
XWMHints ourxwmhints; |
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greg |
1.1 |
|
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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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greg |
1.6 |
nplanes = DisplayPlanes(ourdisplay, ourscreen); |
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if (nplanes < 4) { |
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greg |
1.1 |
stderr_v("not enough colors\n"); |
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return(NULL); |
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greg |
1.6 |
} else if (nplanes <= 12) { |
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if (!XMatchVisualInfo(ourdisplay,ourscreen, |
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nplanes,PseudoColor,&ourvinfo)) { |
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stderr_v("PseudoColor not supported\n"); |
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return(NULL); |
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} |
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} else if (!XMatchVisualInfo(ourdisplay,ourscreen, |
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nplanes,TrueColor,&ourvinfo)) { |
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stderr_v("TrueColor not supported\n"); |
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return(NULL); |
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greg |
1.1 |
} |
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greg |
1.6 |
ourvisual = ourvinfo.visual; |
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make_gmap(GAMMA); |
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greg |
1.1 |
/* create a cursor */ |
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pickcursor = XCreateFontCursor (ourdisplay, XC_diamond_cross); |
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greg |
1.4 |
/* 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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greg |
1.1 |
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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141 |
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142 |
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static |
143 |
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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; |
153 |
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} |
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greg |
1.8 |
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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greg |
1.1 |
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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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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greg |
1.4 |
XSelectInput(ourdisplay, gwind, 0); |
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XResizeWindow(ourdisplay, gwind, xres, yres+COMHEIGHT); |
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greg |
1.1 |
comline = xt_open(ourdisplay, |
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greg |
1.4 |
DefaultGC(ourdisplay,ourscreen), |
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greg |
1.1 |
gwind, 0, yres, xres, COMHEIGHT, 0, COMFN); |
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greg |
1.4 |
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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greg |
1.1 |
gwidth = xres; |
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gheight = yres; |
184 |
greg |
1.8 |
XFlush(ourdisplay); |
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sleep(2); /* wait for window manager */ |
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greg |
1.4 |
XSync(ourdisplay, 1); /* discard input */ |
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} |
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XClearWindow(ourdisplay, gwind); |
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greg |
1.6 |
if (ourvisual->class == PseudoColor) /* 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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greg |
1.4 |
|
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XSelectInput(ourdisplay, gwind, |
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StructureNotifyMask|ExposureMask|KeyPressMask|ButtonPressMask); |
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greg |
1.1 |
} |
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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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greg |
1.6 |
extern unsigned long true_pixel(); |
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unsigned long pixel; |
208 |
greg |
1.1 |
|
209 |
greg |
1.6 |
if (ncolors > 0) |
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pixel = pixval[get_pixel(col, xnewcolr)]; |
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else if (ourvisual->class == TrueColor) |
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pixel = true_pixel(col); |
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else |
214 |
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return; |
215 |
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XSetForeground(ourdisplay, ourgc, pixel); |
216 |
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XFillRectangle(ourdisplay, gwind, |
217 |
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ourgc, xmin, gheight-ymax, xmax-xmin, ymax-ymin); |
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greg |
1.5 |
} |
219 |
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220 |
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221 |
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static |
222 |
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x11_flush() /* flush output */ |
223 |
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{ |
224 |
greg |
1.8 |
if (ncolors <= 0 && ourvisual->class != TrueColor) /* dummy */ |
225 |
greg |
1.5 |
XFillRectangle(ourdisplay, gwind, ourgc, 0, 0, 1 ,1); |
226 |
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while (XPending(ourdisplay) > 0) |
227 |
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getevent(); |
228 |
greg |
1.1 |
} |
229 |
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230 |
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231 |
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static |
232 |
greg |
1.3 |
x11_comin(inp, prompt) /* read in a command line */ |
233 |
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char *inp, *prompt; |
234 |
greg |
1.1 |
{ |
235 |
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int x11_getc(), x11_comout(); |
236 |
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237 |
greg |
1.3 |
if (prompt != NULL) |
238 |
greg |
1.4 |
if (fromcombuf(inp, &x11_driver)) |
239 |
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return; |
240 |
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else |
241 |
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xt_puts(prompt, comline); |
242 |
greg |
1.1 |
xt_cursor(comline, TBLKCURS); |
243 |
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editline(inp, x11_getc, x11_comout); |
244 |
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xt_cursor(comline, TNOCURS); |
245 |
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} |
246 |
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247 |
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248 |
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static |
249 |
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x11_comout(out) /* output a string to command line */ |
250 |
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char *out; |
251 |
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{ |
252 |
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if (comline != NULL) |
253 |
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xt_puts(out, comline); |
254 |
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} |
255 |
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256 |
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257 |
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static |
258 |
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x11_errout(msg) /* output an error message */ |
259 |
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char *msg; |
260 |
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{ |
261 |
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x11_comout(msg); |
262 |
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stderr_v(msg); /* send to stderr also! */ |
263 |
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} |
264 |
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265 |
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266 |
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static int |
267 |
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x11_getcur(xp, yp) /* get cursor position */ |
268 |
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int *xp, *yp; |
269 |
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{ |
270 |
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while (XGrabPointer(ourdisplay, gwind, True, ButtonPressMask, |
271 |
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GrabModeAsync, GrabModeAsync, None, pickcursor, |
272 |
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CurrentTime) != GrabSuccess) |
273 |
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sleep(2); |
274 |
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275 |
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do |
276 |
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getevent(); |
277 |
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while (c_last <= c_first && levptr(XEvent)->type != ButtonPress); |
278 |
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*xp = levptr(XButtonPressedEvent)->x; |
279 |
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*yp = gheight-1 - levptr(XButtonPressedEvent)->y; |
280 |
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XUngrabPointer(ourdisplay, CurrentTime); |
281 |
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XFlush(ourdisplay); /* insure release */ |
282 |
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if (c_last > c_first) /* key pressed */ |
283 |
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return(x11_getc()); |
284 |
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/* button pressed */ |
285 |
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if (levptr(XButtonPressedEvent)->button & Button1) |
286 |
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return(MB1); |
287 |
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if (levptr(XButtonPressedEvent)->button & Button2) |
288 |
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return(MB2); |
289 |
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if (levptr(XButtonPressedEvent)->button & Button3) |
290 |
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return(MB3); |
291 |
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if (levptr(XButtonPressedEvent)->button & (Button4|Button5)) |
292 |
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return(MB1); |
293 |
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return(ABORT); |
294 |
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} |
295 |
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296 |
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297 |
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static |
298 |
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xnewcolr(ndx, r, g, b) /* enter a color into hardware table */ |
299 |
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int ndx; |
300 |
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int r, g, b; |
301 |
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{ |
302 |
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XColor xcolor; |
303 |
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304 |
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xcolor.pixel = pixval[ndx]; |
305 |
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xcolor.red = r << 8; |
306 |
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xcolor.green = g << 8; |
307 |
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xcolor.blue = b << 8; |
308 |
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xcolor.flags = DoRed|DoGreen|DoBlue; |
309 |
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310 |
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XStoreColor(ourdisplay, ourmap, &xcolor); |
311 |
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} |
312 |
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313 |
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314 |
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static int |
315 |
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getpixels() /* get the color map */ |
316 |
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{ |
317 |
greg |
1.4 |
if (ncolors > 0) |
318 |
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return(ncolors); |
319 |
greg |
1.6 |
if (ourvisual == DefaultVisual(ourdisplay,ourscreen)) { |
320 |
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ourmap = DefaultColormap(ourdisplay,ourscreen); |
321 |
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goto loop; |
322 |
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} |
323 |
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newmap: |
324 |
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ourmap = XCreateColormap(ourdisplay,gwind,ourvisual,AllocNone); |
325 |
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loop: |
326 |
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for (ncolors = ourvisual->map_entries; |
327 |
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ncolors > ourvisual->map_entries/3; |
328 |
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ncolors = ncolors*.937) { |
329 |
greg |
1.1 |
pixval = (int *)malloc(ncolors*sizeof(int)); |
330 |
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if (pixval == NULL) |
331 |
greg |
1.6 |
return(ncolors = 0); |
332 |
greg |
1.1 |
if (XAllocColorCells(ourdisplay,ourmap,0,NULL,0, |
333 |
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pixval,ncolors) != 0) |
334 |
greg |
1.6 |
break; |
335 |
greg |
1.1 |
free((char *)pixval); |
336 |
greg |
1.6 |
pixval = NULL; |
337 |
greg |
1.1 |
} |
338 |
greg |
1.6 |
if (pixval == NULL) { |
339 |
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if (ourmap == DefaultColormap(ourdisplay,ourscreen)) |
340 |
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goto newmap; /* try it with our map */ |
341 |
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else |
342 |
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return(ncolors = 0); /* failed */ |
343 |
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} |
344 |
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if (ourmap != DefaultColormap(ourdisplay,ourscreen)) { |
345 |
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XColor thiscolor; |
346 |
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register int i, j; |
347 |
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/* reset black and white */ |
348 |
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for (i = 0; i < ncolors; i++) { |
349 |
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if (pixval[i] != ourblack && pixval[i] != ourwhite) |
350 |
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continue; |
351 |
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thiscolor.pixel = pixval[i]; |
352 |
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thiscolor.flags = DoRed|DoGreen|DoBlue; |
353 |
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XQueryColor(ourdisplay, |
354 |
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DefaultColormap(ourdisplay,ourscreen), |
355 |
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&thiscolor); |
356 |
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XStoreColor(ourdisplay, ourmap, &thiscolor); |
357 |
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for (j = i; j+1 < ncolors; j++) |
358 |
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pixval[j] = pixval[j+1]; |
359 |
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ncolors--; |
360 |
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i--; |
361 |
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} |
362 |
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} |
363 |
|
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XSetWindowColormap(ourdisplay, gwind, ourmap); |
364 |
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return(ncolors); |
365 |
greg |
1.1 |
} |
366 |
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|
367 |
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|
368 |
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static |
369 |
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freepixels() /* free our pixels */ |
370 |
|
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{ |
371 |
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if (ncolors == 0) |
372 |
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return; |
373 |
|
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XFreeColors(ourdisplay,ourmap,pixval,ncolors,0L); |
374 |
|
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ncolors = 0; |
375 |
greg |
1.8 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
376 |
greg |
1.6 |
XFreeColormap(ourdisplay, ourmap); |
377 |
|
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ourmap = 0; |
378 |
greg |
1.1 |
} |
379 |
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|
380 |
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|
381 |
greg |
1.6 |
static unsigned long |
382 |
|
|
true_pixel(col) /* return true pixel value for color */ |
383 |
|
|
COLOR col; |
384 |
|
|
{ |
385 |
|
|
unsigned long rval; |
386 |
|
|
BYTE rgb[3]; |
387 |
|
|
|
388 |
|
|
map_color(rgb, col); |
389 |
|
|
rval = ourvisual->red_mask*rgb[RED]/255 & ourvisual->red_mask; |
390 |
|
|
rval |= ourvisual->green_mask*rgb[GRN]/255 & ourvisual->green_mask; |
391 |
|
|
rval |= ourvisual->blue_mask*rgb[BLU]/255 & ourvisual->blue_mask; |
392 |
|
|
return(rval); |
393 |
|
|
} |
394 |
|
|
|
395 |
|
|
|
396 |
greg |
1.1 |
static int |
397 |
|
|
x11_getc() /* get a command character */ |
398 |
|
|
{ |
399 |
|
|
while (c_last <= c_first) { |
400 |
|
|
c_first = c_last = 0; /* reset */ |
401 |
|
|
getevent(); /* wait for key */ |
402 |
|
|
} |
403 |
|
|
x11_driver.inpready--; |
404 |
|
|
return(c_queue[c_first++]); |
405 |
|
|
} |
406 |
|
|
|
407 |
|
|
|
408 |
|
|
static |
409 |
|
|
getevent() /* get next event */ |
410 |
|
|
{ |
411 |
|
|
XNextEvent(ourdisplay, levptr(XEvent)); |
412 |
|
|
switch (levptr(XEvent)->type) { |
413 |
greg |
1.4 |
case ConfigureNotify: |
414 |
|
|
resizewindow(levptr(XConfigureEvent)); |
415 |
|
|
break; |
416 |
|
|
case UnmapNotify: |
417 |
|
|
freepixels(); |
418 |
|
|
break; |
419 |
|
|
case MapNotify: |
420 |
greg |
1.6 |
if (ourvisual->class == PseudoColor) |
421 |
|
|
if (getpixels() == 0) |
422 |
|
|
stderr_v("Cannot allocate colors\n"); |
423 |
|
|
else |
424 |
|
|
new_ctab(ncolors); |
425 |
greg |
1.4 |
break; |
426 |
|
|
case Expose: |
427 |
|
|
fixwindow(levptr(XExposeEvent)); |
428 |
|
|
break; |
429 |
greg |
1.1 |
case KeyPress: |
430 |
|
|
getkey(levptr(XKeyPressedEvent)); |
431 |
|
|
break; |
432 |
|
|
case ButtonPress: |
433 |
|
|
break; |
434 |
|
|
} |
435 |
|
|
} |
436 |
|
|
|
437 |
|
|
|
438 |
|
|
static |
439 |
|
|
getkey(ekey) /* get input key */ |
440 |
|
|
register XKeyPressedEvent *ekey; |
441 |
|
|
{ |
442 |
greg |
1.8 |
register int n; |
443 |
greg |
1.7 |
|
444 |
|
|
n = XLookupString(ekey, c_queue+c_last, sizeof(c_queue)-c_last, |
445 |
greg |
1.1 |
NULL, NULL); |
446 |
greg |
1.7 |
c_last += n; |
447 |
|
|
x11_driver.inpready += n; |
448 |
greg |
1.1 |
} |
449 |
|
|
|
450 |
|
|
|
451 |
|
|
static |
452 |
|
|
fixwindow(eexp) /* repair damage to window */ |
453 |
|
|
register XExposeEvent *eexp; |
454 |
|
|
{ |
455 |
greg |
1.4 |
if (eexp->window == gwind) { |
456 |
|
|
sprintf(getcombuf(&x11_driver), "repaint %d %d %d %d\n", |
457 |
|
|
eexp->x, gheight - eexp->y - eexp->height, |
458 |
greg |
1.1 |
eexp->x + eexp->width, gheight - eexp->y); |
459 |
greg |
1.4 |
} else if (eexp->window == comline->w) { |
460 |
|
|
if (eexp->count == 0) |
461 |
|
|
xt_redraw(comline); |
462 |
|
|
} |
463 |
greg |
1.1 |
} |
464 |
greg |
1.4 |
|
465 |
|
|
|
466 |
|
|
static |
467 |
|
|
resizewindow(ersz) /* resize window */ |
468 |
|
|
register XConfigureEvent *ersz; |
469 |
|
|
{ |
470 |
|
|
if (ersz->width == gwidth && ersz->height-COMHEIGHT == gheight) |
471 |
|
|
return; |
472 |
|
|
|
473 |
|
|
gwidth = ersz->width; |
474 |
|
|
gheight = ersz->height-COMHEIGHT; |
475 |
|
|
x11_driver.xsiz = gwidth < MINWIDTH ? MINWIDTH : gwidth; |
476 |
|
|
x11_driver.ysiz = gheight < MINHEIGHT ? MINHEIGHT : gheight; |
477 |
|
|
|
478 |
|
|
strcpy(getcombuf(&x11_driver), "new\n"); |
479 |
|
|
} |