src/rt/x10.c

/* Copyright (c) 1987 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 *  x10.c - driver for X-windows version 10.4
 *
 *     5/7/87
 */

#include  <stdio.h>

#include  <sys/ioctl.h>

#include  <X/Xlib.h>
#include  <X/cursors/bcross.cursor>
#include  <X/cursors/bcross_mask.cursor>

#include  "color.h"

#include  "driver.h"

#include  "xtwind.h"

#define GAMMA           2.2             /* exponent for color correction */

#define BORWIDTH        5               /* border width */
#define COMHEIGHT       (COMLH*COMCH)   /* command line height (pixels) */
#define MINWIDTH        (32*COMCW)      /* minimum graphics window width */
#define MINHEIGHT       64              /* minimum graphics window height */

#define COMFN           "8x13"          /* command line font name */
#define COMLH           3               /* number of command lines */
#define COMCW           8               /* approx. character width (pixels) */
#define COMCH           13              /* approx. character height (pixels) */

#ifndef WFLUSH
#define WFLUSH          30              /* flush after this many rays */
#endif

#define  checkinp()     while (XPending() > 0) getevent()

#define  levptr(etype)  ((etype *)&thisevent)

static XEvent  thisevent;               /* current event */

static int  ncolors = 0;                /* color table size */
static int  *pixval;                    /* allocated pixel values */

static Display  *ourdisplay = NULL;     /* our display */

static Window  gwind = 0;               /* our graphics window */

static Cursor  pickcursor = 0;          /* cursor used for picking */

static int  gwidth = 0;                 /* graphics window width */
static int  gheight = 0;                /* graphics window height */

static TEXTWIND  *comline = NULL;       /* our command line */

static char  c_queue[64];               /* input queue */
static int  c_first = 0;                /* first character in queue */
static int  c_last = 0;                 /* last character in queue */

extern char  *malloc(), *getcombuf();

int  x_close(), x_clear(), x_paintr(), x_errout(),
                x_getcur(), x_comout(), x_comin();

static struct driver  x_driver = {
        x_close, x_clear, x_paintr, x_getcur,
        x_comout, x_comin, 1.0
};


struct driver *
x_init(name, id)                /* initialize driver */
char  *name, *id;
{
        char  defgeom[32];
        OpaqueFrame  mainframe;

        ourdisplay = XOpenDisplay(NULL);
        if (ourdisplay == NULL) {
                stderr_v("cannot open X-windows; DISPLAY variable set?\n");
                return(NULL);
        }
        if (DisplayPlanes() < 4) {
                stderr_v("not enough colors\n");
                return(NULL);
        }
        make_gmap(GAMMA);                       /* make color map */

        pickcursor = XCreateCursor(bcross_width, bcross_height,
                        bcross_bits, bcross_mask_bits,
                        bcross_x_hot, bcross_y_hot,
                        BlackPixel, WhitePixel, GXcopy);
        mainframe.bdrwidth = BORWIDTH;
        mainframe.border = BlackPixmap;
        mainframe.background = BlackPixmap;
        sprintf(defgeom, "=%dx%d+0+22", DisplayWidth()-(2*BORWIDTH),
                        DisplayHeight()-(2*BORWIDTH+22));
        gwind = XCreate("X10 driver", name, NULL, defgeom,
                        &mainframe, MINWIDTH, MINHEIGHT+COMHEIGHT);
        if (gwind == 0) {
                stderr_v("can't create window\n");
                return(NULL);
        }
        XStoreName(gwind, id);
        XMapWindow(gwind);
        XSelectInput(gwind, KeyPressed|ButtonPressed|
                        ExposeWindow|ExposeRegion|UnmapWindow);
        x_driver.xsiz = mainframe.width;
        x_driver.ysiz = mainframe.height-COMHEIGHT;
        x_driver.inpready = 0;
        cmdvec = x_comout;                      /* set error vectors */
        if (wrnvec != NULL)
                wrnvec = x_errout;
        return(&x_driver);
}


static
x_close()                       /* close our display */
{
        cmdvec = NULL;                          /* reset error vectors */
        if (wrnvec != NULL)
                wrnvec = stderr_v;
        if (ourdisplay == NULL)
                return;
        if (comline != NULL) {
                xt_close(comline);
                comline = NULL;
        }
        if (gwind != 0) {
                XDestroyWindow(gwind);
                gwind = 0;
                gwidth = gheight = 0;
        }
        XFreeCursor(pickcursor);
        freepixels();
        XCloseDisplay(ourdisplay);
        ourdisplay = NULL;
}


static
x_clear(xres, yres)                     /* clear our display */
int  xres, yres;
{
        if (xres < MINWIDTH)
                xres = MINWIDTH;
        if (yres < MINHEIGHT)
                yres = MINHEIGHT;
        if (xres != gwidth || yres != gheight) {        /* new window */
                if (comline != NULL)
                        xt_close(comline);
                XChangeWindow(gwind, xres, yres+COMHEIGHT);
                comline = xt_open(gwind, 0, yres, xres, COMHEIGHT, 0, COMFN);
                if (comline == NULL) {
                        stderr_v("Cannot open command line window\n");
                        quit(1);
                }
                gwidth = xres;
                gheight = yres;
        } else                                          /* just clear */
                XClear(gwind);
                                                /* reinitialize color table */
        if (ncolors == 0 && getpixels() == 0)
                stderr_v("cannot allocate colors\n");
        else
                new_ctab(ncolors);
        XSync(1);                               /* discard input */
        return;
}


static
x_paintr(col, xmin, ymin, xmax, ymax)           /* fill a rectangle */
COLOR  col;
int  xmin, ymin, xmax, ymax;
{
        extern long  nrays;             /* global ray count */
        extern int  xnewcolr();         /* pixel assignment routine */
        static long  lastflush = 0;     /* ray count at last flush */

        if (ncolors > 0) {
                XPixSet(gwind, xmin, gheight-ymax, xmax-xmin, ymax-ymin,
                                pixval[get_pixel(col, xnewcolr)]);
        }
        if (nrays - lastflush >= WFLUSH) {
                if (ncolors <= 0)       /* output necessary for death */
                        XPixSet(gwind,0,0,1,1,BlackPixel);
                checkinp();
                lastflush = nrays;
        }
}


static
x_comin(inp)                    /* read in a command line */
char  *inp;
{
        int  x_getc(), x_comout();

        if (fromcombuf(inp, &x_driver))
                return;
        xt_cursor(comline, TBLKCURS);
        editline(inp, x_getc, x_comout);
        xt_cursor(comline, TNOCURS);
}


static
x_comout(out)                   /* output a string to command line */
char  *out;
{
        if (comline != NULL)
                xt_puts(out, comline);
        XFlush();
}


static
x_errout(msg)                   /* output an error message */
char  *msg;
{
        x_comout(msg);
        stderr_v(msg);          /* send to stderr also! */
}


static int
x_getcur(xp, yp)                /* get cursor position */
int  *xp, *yp;
{
        while (XGrabMouse(gwind, pickcursor, ButtonPressed) == 0)
                sleep(1);
        XFocusKeyboard(gwind);
        do
                getevent();
        while (c_last <= c_first && levptr(XEvent)->type != ButtonPressed);
        *xp = levptr(XKeyOrButtonEvent)->x;
        *yp = gheight-1 - levptr(XKeyOrButtonEvent)->y;
        XFocusKeyboard(RootWindow);
        XUngrabMouse();
        XFlush();                               /* insure release */
        if (c_last > c_first)                   /* key pressed */
                return(x_getc());
                                                /* button pressed */
        switch (levptr(XKeyOrButtonEvent)->detail & 0377) {
        case LeftButton:
                return(MB1);
        case MiddleButton:
                return(MB2);
        case RightButton:
                return(MB3);
        }
        return(ABORT);
}


static
xnewcolr(ndx, r, g, b)          /* enter a color into hardware table */
int  ndx;
int  r, g, b;
{
        Color  xcolor;

        xcolor.pixel = pixval[ndx];
        xcolor.red = r << 8;
        xcolor.green = g << 8;
        xcolor.blue = b << 8;

        XStoreColor(&xcolor);
}


static int
getpixels()                             /* get the color map */
{
        int  planes;

        freepixels();
        for (ncolors=(1<<DisplayPlanes())-3; ncolors>12; ncolors=ncolors*.937){
                pixval = (int *)malloc(ncolors*sizeof(int));
                if (pixval == NULL)
                        break;
                if (XGetColorCells(0,ncolors,0,&planes,pixval) != 0)
                        return(ncolors);
                free((char *)pixval);
        }
        return(ncolors = 0);
}


static
freepixels()                            /* free our pixels */
{
        if (ncolors == 0)
                return;
        XFreeColors(pixval, ncolors, 0);
        free((char *)pixval);
        ncolors = 0;
}


static int
x_getc()                        /* get a command character */
{
        while (c_last <= c_first) {
                c_first = c_last = 0;           /* reset */
                getevent();                     /* wait for key */
        }
        x_driver.inpready--;
        return(c_queue[c_first++]);
}


static
getevent()                      /* get next event */
{
        XNextEvent(levptr(XEvent));
        switch (levptr(XEvent)->type) {
        case KeyPressed:
                getkey(levptr(XKeyPressedEvent));
                break;
        case ExposeWindow:
                windowchange(levptr(XExposeEvent));
                break;
        case ExposeRegion:
                fixwindow(levptr(XExposeEvent));
                break;
        case UnmapWindow:
                if (levptr(XUnmapEvent)->subwindow == 0)
                        freepixels();
                break;
        case ButtonPressed:             /* handled in x_getcur() */
                break;
        }
}


static
windowchange(eexp)                      /* process window change event */
register XExposeEvent  *eexp;
{
        if (eexp->subwindow != 0) {
                fixwindow(eexp);
                return;
        }
                                        /* check for change in size */
        if (eexp->width != gwidth || eexp->height-COMHEIGHT != gheight) {
                x_driver.xsiz = eexp->width;
                x_driver.ysiz = eexp->height-COMHEIGHT;
                strcpy(getcombuf(&x_driver), "new\n");
                return;
        }
                                        /* remap colors */
        if (ncolors == 0 && getpixels() == 0) {
                stderr_v("cannot allocate colors\n");
                return;
        }
        new_ctab(ncolors);
                                        /* redraw */
        fixwindow(eexp);
}


static
getkey(ekey)                            /* get input key */
register XKeyPressedEvent  *ekey;
{
        int  n;
        register char  *str;

        str = XLookupMapping(ekey, &n);
        while (n-- > 0 && c_last < sizeof(c_queue))
                c_queue[c_last++] = *str++;
        x_driver.inpready = c_last - c_first;
}


static
fixwindow(eexp)                         /* repair damage to window */
register XExposeEvent  *eexp;
{
        if (eexp->subwindow == 0)
                sprintf(getcombuf(&x_driver), "repaint %d %d %d %d\n",
                        eexp->x, gheight - eexp->y - eexp->height,
                        eexp->x + eexp->width, gheight - eexp->y);
        else if (eexp->subwindow == comline->w)
                xt_redraw(comline);
}
Revision:	1.19
Committed:	Mon Jan 8 14:45:05 1990 UTC (35 years, 5 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.18:	+27 -24 lines
Log Message:	added window resizing
#	User	Rev	Content
1	greg	1.1	/* Copyright (c) 1987 Regents of the University of California */
2
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* x10.c - driver for X-windows version 10.4
9			*
10			* 5/7/87
11			*/
12
13			#include <stdio.h>
14
15			#include <sys/ioctl.h>
16
17			#include <X/Xlib.h>
18			#include <X/cursors/bcross.cursor>
19			#include <X/cursors/bcross_mask.cursor>
20
21			#include "color.h"
22
23			#include "driver.h"
24
25			#include "xtwind.h"
26
27	greg	1.12	#define GAMMA 2.2 /* exponent for color correction */
28	greg	1.1
29			#define BORWIDTH 5 /* border width */
30			#define COMHEIGHT (COMLHCOMCH) / command line height (pixels) */
31	greg	1.18	#define MINWIDTH (32COMCW) / minimum graphics window width */
32			#define MINHEIGHT 64 /* minimum graphics window height */
33	greg	1.1
34			#define COMFN "8x13" /* command line font name */
35			#define COMLH 3 /* number of command lines */
36			#define COMCW 8 /* approx. character width (pixels) */
37			#define COMCH 13 /* approx. character height (pixels) */
38
39			#ifndef WFLUSH
40	greg	1.10	#define WFLUSH 30 /* flush after this many rays */
41	greg	1.1	#endif
42
43	greg	1.8	#define checkinp() while (XPending() > 0) getevent()
44	greg	1.1
45			#define levptr(etype) ((etype *)&thisevent)
46
47			static XEvent thisevent; /* current event */
48
49			static int ncolors = 0; /* color table size */
50	greg	1.12	static int pixval; / allocated pixel values */
51	greg	1.1
52			static Display ourdisplay = NULL; / our display */
53
54			static Window gwind = 0; /* our graphics window */
55
56			static Cursor pickcursor = 0; /* cursor used for picking */
57
58			static int gwidth = 0; /* graphics window width */
59			static int gheight = 0; /* graphics window height */
60
61			static TEXTWIND comline = NULL; / our command line */
62
63			static char c_queue[64]; /* input queue */
64			static int c_first = 0; /* first character in queue */
65			static int c_last = 0; /* last character in queue */
66
67	greg	1.18	extern char malloc(), getcombuf();
68	greg	1.1
69			int x_close(), x_clear(), x_paintr(), x_errout(),
70			x_getcur(), x_comout(), x_comin();
71
72			static struct driver x_driver = {
73			x_close, x_clear, x_paintr, x_getcur,
74	greg	1.18	x_comout, x_comin, 1.0
75	greg	1.1	};
76
77
78			struct driver *
79	greg	1.16	x_init(name, id) /* initialize driver */
80			char name, id;
81	greg	1.1	{
82	greg	1.19	char defgeom[32];
83			OpaqueFrame mainframe;
84
85	greg	1.1	ourdisplay = XOpenDisplay(NULL);
86			if (ourdisplay == NULL) {
87	greg	1.2	stderr_v("cannot open X-windows; DISPLAY variable set?\n");
88	greg	1.1	return(NULL);
89			}
90			if (DisplayPlanes() < 4) {
91			stderr_v("not enough colors\n");
92			return(NULL);
93			}
94	greg	1.14	make_gmap(GAMMA); /* make color map */
95	greg	1.1
96			pickcursor = XCreateCursor(bcross_width, bcross_height,
97			bcross_bits, bcross_mask_bits,
98			bcross_x_hot, bcross_y_hot,
99			BlackPixel, WhitePixel, GXcopy);
100	greg	1.19	mainframe.bdrwidth = BORWIDTH;
101			mainframe.border = BlackPixmap;
102			mainframe.background = BlackPixmap;
103			sprintf(defgeom, "=%dx%d+0+22", DisplayWidth()-(2*BORWIDTH),
104			DisplayHeight()-(2*BORWIDTH+22));
105			gwind = XCreate("X10 driver", name, NULL, defgeom,
106			&mainframe, MINWIDTH, MINHEIGHT+COMHEIGHT);
107			if (gwind == 0) {
108			stderr_v("can't create window\n");
109			return(NULL);
110			}
111			XStoreName(gwind, id);
112			XMapWindow(gwind);
113			XSelectInput(gwind, KeyPressed\|ButtonPressed\|
114			ExposeWindow\|ExposeRegion\|UnmapWindow);
115			x_driver.xsiz = mainframe.width;
116			x_driver.ysiz = mainframe.height-COMHEIGHT;
117	greg	1.1	x_driver.inpready = 0;
118	greg	1.5	cmdvec = x_comout; /* set error vectors */
119	greg	1.1	if (wrnvec != NULL)
120			wrnvec = x_errout;
121			return(&x_driver);
122			}
123
124
125			static
126			x_close() /* close our display */
127			{
128	greg	1.5	cmdvec = NULL; /* reset error vectors */
129	greg	1.1	if (wrnvec != NULL)
130			wrnvec = stderr_v;
131			if (ourdisplay == NULL)
132			return;
133			if (comline != NULL) {
134			xt_close(comline);
135			comline = NULL;
136			}
137			if (gwind != 0) {
138			XDestroyWindow(gwind);
139			gwind = 0;
140			gwidth = gheight = 0;
141			}
142			XFreeCursor(pickcursor);
143	greg	1.12	freepixels();
144	greg	1.1	XCloseDisplay(ourdisplay);
145			ourdisplay = NULL;
146			}
147
148
149			static
150			x_clear(xres, yres) /* clear our display */
151			int xres, yres;
152			{
153	greg	1.18	if (xres < MINWIDTH)
154			xres = MINWIDTH;
155			if (yres < MINHEIGHT)
156			yres = MINHEIGHT;
157	greg	1.1	if (xres != gwidth \|\| yres != gheight) { /* new window */
158			if (comline != NULL)
159			xt_close(comline);
160	greg	1.19	XChangeWindow(gwind, xres, yres+COMHEIGHT);
161	greg	1.1	comline = xt_open(gwind, 0, yres, xres, COMHEIGHT, 0, COMFN);
162	greg	1.19	if (comline == NULL) {
163			stderr_v("Cannot open command line window\n");
164			quit(1);
165			}
166	greg	1.1	gwidth = xres;
167			gheight = yres;
168			} else /* just clear */
169			XClear(gwind);
170	greg	1.17	/* reinitialize color table */
171			if (ncolors == 0 && getpixels() == 0)
172			stderr_v("cannot allocate colors\n");
173			else
174			new_ctab(ncolors);
175			XSync(1); /* discard input */
176	greg	1.1	return;
177			}
178
179
180			static
181			x_paintr(col, xmin, ymin, xmax, ymax) /* fill a rectangle */
182			COLOR col;
183			int xmin, ymin, xmax, ymax;
184			{
185			extern long nrays; /* global ray count */
186	greg	1.14	extern int xnewcolr(); /* pixel assignment routine */
187	greg	1.1	static long lastflush = 0; /* ray count at last flush */
188
189			if (ncolors > 0) {
190			XPixSet(gwind, xmin, gheight-ymax, xmax-xmin, ymax-ymin,
191	greg	1.14	pixval[get_pixel(col, xnewcolr)]);
192	greg	1.1	}
193			if (nrays - lastflush >= WFLUSH) {
194	greg	1.9	if (ncolors <= 0) /* output necessary for death */
195			XPixSet(gwind,0,0,1,1,BlackPixel);
196	greg	1.8	checkinp();
197	greg	1.1	lastflush = nrays;
198			}
199			}
200
201
202			static
203			x_comin(inp) /* read in a command line */
204			char *inp;
205			{
206			int x_getc(), x_comout();
207
208	greg	1.18	if (fromcombuf(inp, &x_driver))
209			return;
210	greg	1.1	xt_cursor(comline, TBLKCURS);
211	greg	1.11	editline(inp, x_getc, x_comout);
212	greg	1.1	xt_cursor(comline, TNOCURS);
213			}
214
215
216			static
217			x_comout(out) /* output a string to command line */
218			char *out;
219			{
220			if (comline != NULL)
221			xt_puts(out, comline);
222	greg	1.8	XFlush();
223	greg	1.1	}
224
225
226			static
227			x_errout(msg) /* output an error message */
228			char *msg;
229			{
230			x_comout(msg);
231			stderr_v(msg); /* send to stderr also! */
232			}
233
234
235			static int
236			x_getcur(xp, yp) /* get cursor position */
237			int xp, yp;
238			{
239			while (XGrabMouse(gwind, pickcursor, ButtonPressed) == 0)
240			sleep(1);
241			XFocusKeyboard(gwind);
242			do
243			getevent();
244			while (c_last <= c_first && levptr(XEvent)->type != ButtonPressed);
245			*xp = levptr(XKeyOrButtonEvent)->x;
246			*yp = gheight-1 - levptr(XKeyOrButtonEvent)->y;
247			XFocusKeyboard(RootWindow);
248			XUngrabMouse();
249	greg	1.8	XFlush(); /* insure release */
250	greg	1.1	if (c_last > c_first) /* key pressed */
251			return(x_getc());
252			/* button pressed */
253			switch (levptr(XKeyOrButtonEvent)->detail & 0377) {
254			case LeftButton:
255			return(MB1);
256			case MiddleButton:
257			return(MB2);
258			case RightButton:
259			return(MB3);
260			}
261			return(ABORT);
262			}
263
264
265			static
266	greg	1.13	xnewcolr(ndx, r, g, b) /* enter a color into hardware table */
267	greg	1.1	int ndx;
268	greg	1.13	int r, g, b;
269	greg	1.1	{
270			Color xcolor;
271
272			xcolor.pixel = pixval[ndx];
273	greg	1.13	xcolor.red = r << 8;
274			xcolor.green = g << 8;
275			xcolor.blue = b << 8;
276	greg	1.1
277			XStoreColor(&xcolor);
278			}
279
280
281	greg	1.17	static int
282	greg	1.12	getpixels() /* get the color map */
283	greg	1.1	{
284			int planes;
285
286	greg	1.17	freepixels();
287	greg	1.1	for (ncolors=(1<<DisplayPlanes())-3; ncolors>12; ncolors=ncolors*.937){
288			pixval = (int )malloc(ncolorssizeof(int));
289	greg	1.12	if (pixval == NULL)
290			break;
291	greg	1.1	if (XGetColorCells(0,ncolors,0,&planes,pixval) != 0)
292	greg	1.17	return(ncolors);
293	greg	1.1	free((char *)pixval);
294			}
295	greg	1.17	return(ncolors = 0);
296	greg	1.1	}
297
298
299			static
300	greg	1.12	freepixels() /* free our pixels */
301	greg	1.1	{
302			if (ncolors == 0)
303			return;
304			XFreeColors(pixval, ncolors, 0);
305			free((char *)pixval);
306			ncolors = 0;
307			}
308
309
310			static int
311			x_getc() /* get a command character */
312			{
313			while (c_last <= c_first) {
314			c_first = c_last = 0; /* reset */
315			getevent(); /* wait for key */
316			}
317			x_driver.inpready--;
318			return(c_queue[c_first++]);
319			}
320
321
322			static
323			getevent() /* get next event */
324			{
325			XNextEvent(levptr(XEvent));
326			switch (levptr(XEvent)->type) {
327			case KeyPressed:
328			getkey(levptr(XKeyPressedEvent));
329			break;
330			case ExposeWindow:
331	greg	1.18	windowchange(levptr(XExposeEvent));
332			break;
333	greg	1.1	case ExposeRegion:
334			fixwindow(levptr(XExposeEvent));
335			break;
336			case UnmapWindow:
337			if (levptr(XUnmapEvent)->subwindow == 0)
338	greg	1.12	freepixels();
339	greg	1.1	break;
340			case ButtonPressed: /* handled in x_getcur() */
341			break;
342			}
343			}
344
345
346			static
347	greg	1.18	windowchange(eexp) /* process window change event */
348			register XExposeEvent *eexp;
349			{
350			if (eexp->subwindow != 0) {
351			fixwindow(eexp);
352			return;
353			}
354			/* check for change in size */
355	greg	1.19	if (eexp->width != gwidth \|\| eexp->height-COMHEIGHT != gheight) {
356	greg	1.18	x_driver.xsiz = eexp->width;
357	greg	1.19	x_driver.ysiz = eexp->height-COMHEIGHT;
358	greg	1.18	strcpy(getcombuf(&x_driver), "new\n");
359			return;
360			}
361			/* remap colors */
362			if (ncolors == 0 && getpixels() == 0) {
363			stderr_v("cannot allocate colors\n");
364			return;
365			}
366			new_ctab(ncolors);
367			/* redraw */
368			fixwindow(eexp);
369			}
370
371
372			static
373	greg	1.1	getkey(ekey) /* get input key */
374			register XKeyPressedEvent *ekey;
375			{
376			int n;
377			register char *str;
378
379			str = XLookupMapping(ekey, &n);
380			while (n-- > 0 && c_last < sizeof(c_queue))
381			c_queue[c_last++] = *str++;
382			x_driver.inpready = c_last - c_first;
383			}
384
385
386			static
387			fixwindow(eexp) /* repair damage to window */
388			register XExposeEvent *eexp;
389			{
390			if (eexp->subwindow == 0)
391	greg	1.18	sprintf(getcombuf(&x_driver), "repaint %d %d %d %d\n",
392			eexp->x, gheight - eexp->y - eexp->height,
393	greg	1.1	eexp->x + eexp->width, gheight - eexp->y);
394			else if (eexp->subwindow == comline->w)
395			xt_redraw(comline);
396			}