src/rt/x11twind.c

#ifndef lint
static const char       RCSid[] = "$Id: x11twind.c,v 2.8 2003/04/11 19:32:00 greg Exp $";
#endif
/*
 *  x11twind.c - routines for X11 text windows.
 *
 *  Written by G. Ward
 *      10/30/87
 *
 *  Modified for X11 by B. V. Smith
 *      9/26/88
 */

#include "copyright.h"

#include  <stdio.h>
#include  <stdlib.h>
#include  <string.h>
#include  <X11/Xlib.h>

#include  "x11twind.h"

#define checkcurs(t)            if ((t)->cursor) togglecurs(t)

#define restorecurs             checkcurs

/* width/height of a character in fontstruct f */
#define Width(f)                ((f)->max_bounds.rbearing - (f)->min_bounds.lbearing)
#define Height(f)               ((f)->ascent + (f)->descent)
#define YStart(f)               ((f)->ascent)

static void  togglecurs();


TEXTWIND *
xt_open(dpy, parent, x, y, width, height, bw, fore, back, fontname)
Display  *dpy;
Window  parent;
int  x, y;
int  width, height;
int  bw;
unsigned long  fore, back;
char  *fontname;
{
        register int  i;
        register TEXTWIND  *t;

        if ((t = (TEXTWIND *)malloc(sizeof(TEXTWIND))) == NULL)
                return(NULL);

        t->dpy = dpy;
        t->w = XCreateSimpleWindow(dpy, parent, x, y, width, height,
                                        bw, fore, back);
        if (t->w == 0)
                return(NULL);
        XMapWindow(dpy, t->w);

        if ((t->f = XLoadQueryFont(dpy, fontname)) == 0)
                return(NULL);

        /* if (!t->f.fixedwidth)   check for fixedwidth later 
                return(NULL); */

        t->gc = XCreateGC(dpy,t->w,0,NULL);
        XSetState(dpy, t->gc, fore, back, GXcopy, AllPlanes);
        XSetFont(dpy, t->gc, t->f->fid);

        t->nc = (width - LEFTMAR) / 
                Width(t->f);            /* number of columns */
        t->nr = height /
                Height(t->f);           /* number of rows */
        if (t->nc < 1 || t->nr < 1)
                return(NULL);
        if ((t->lp = (char **)calloc(t->nr, sizeof(char *))) == NULL)
                return(NULL);
        for (i = 0; i < t->nr; i++)
                if ((t->lp[i] = calloc(t->nc+1, 1)) == NULL)
                        return(NULL);
        t->r = t->c = 0;
        t->cursor = TNOCURS;
        return(t);

}


void
xt_putc(c, t)                           /* output a character */
int  c;
register TEXTWIND  *t;
{
        char    ch[2];

        checkcurs(t);
        switch (c) {
        case '\n':
                if (t->r >= t->nr - 1)
                        xt_delete(t, 0);        /* scroll up 1 line */
                else if (t->r < t->nr - 1)
                        t->r++;
        /* fall through */
        case '\r':
                t->c = 0;
                break;
        case '\b':
                while (t->c < 1 && t->r > 0)
                        t->c = strlen(t->lp[--t->r]);
                if (t->c > 0)
                        t->c--;
                break;
        default:
                if (t->c >= t->nc)
                        xt_putc('\n', t);
                ch[0] = c; ch[1] = '\0';
                XDrawImageString(t->dpy, t->w, t->gc, LEFTMAR+t->c*Width(t->f), 
                        YStart(t->f)+t->r*Height(t->f), ch, 1);
                t->lp[t->r][t->c++] = c;
                break;
        }
        restorecurs(t);
}


void
xt_puts(s, t)                           /* output a string */
register char  *s;
TEXTWIND  *t;
{
        int     oldcurs;

        oldcurs = xt_cursor(t, TNOCURS);        /* for efficiency */
        while (*s)
                xt_putc(*s++, t);
        xt_cursor(t, oldcurs);
}


void
xt_delete(t, r)                         /* delete a line */
register TEXTWIND  *t;
int  r;
{
        char  *cp;
        register int  i;

        if (r < 0 || r >= t->nr)
                return;
        checkcurs(t);
                                        /* move lines */
        XCopyArea(t->dpy, t->w, t->w, t->gc, LEFTMAR, (r+1)*Height(t->f),
                        t->nc*Width(t->f), (t->nr-1-r)*Height(t->f),
                        LEFTMAR, r*Height(t->f));
        cp = t->lp[r];
        for (i = r; i < t->nr-1; i++)
                t->lp[i] = t->lp[i+1];
        t->lp[t->nr-1] = cp;
                                        /* clear bottom */
        XClearArea(t->dpy, t->w, LEFTMAR, (t->nr-1)*Height(t->f),
                        t->nc*Width(t->f), Height(t->f),(Bool) 0);

        memset(cp, '\0', t->nc);
        restorecurs(t);                 /* should we reposition cursor? */
}


void
xt_insert(t, r)                         /* insert a line */
register TEXTWIND  *t;
int  r;
{
        char  *cp;
        register int  i;

        if (r < 0 || r >= t->nr)
                return;
        checkcurs(t);
                                        /* move lines */
        XCopyArea(t->dpy, t->w, t->w, t->gc, LEFTMAR, r*Height(t->f), LEFTMAR,
                        (r+1)*Height(t->f), t->nc*Width(t->f),
                        (t->nr-1-r)*Height(t->f));
        cp = t->lp[t->nr-1];
        for (i = t->nr-1; i > r; i--)
                t->lp[i] = t->lp[i-1];
        t->lp[r] = cp;
                                        /* clear new line */
        XClearArea(t->dpy, t->w, LEFTMAR, r*Height(t->f),
                        t->nc*Width(t->f), Height(t->f), (Bool) 0);
        memset(cp, '\0', t->nc);
        restorecurs(t);                 /* should we reposition cursor? */
}


void
xt_redraw(t)                            /* redraw text window */
register TEXTWIND  *t;
{
        register int  i;

        XClearWindow(t->dpy, t->w);
        for (i = 0; i < t->nr; i++)
            if (strlen(t->lp[i]) > 0)
                XDrawImageString(t->dpy, t->w, t->gc, LEFTMAR, 
                                YStart(t->f)+i*Height(t->f),
                                t->lp[i], strlen(t->lp[i]));
        restorecurs(t);
}


void
xt_clear(t)                             /* clear text window */
register TEXTWIND  *t;
{
        register int  i;

        XClearWindow(t->dpy, t->w);
        for (i = 0; i < t->nr; i++)
                memset(t->lp[i], '\0', t->nc);
        t->r = t->c = 0;
        restorecurs(t);
}


void
xt_move(t, r, c)                        /* move to new position */
register TEXTWIND  *t;
int  r, c;
{
        if (r < 0 || c < 0 || r >= t->nr || c >= t->nc)
                return;
        checkcurs(t);
        t->r = r;
        t->c = c;
        restorecurs(t);
}


int
xt_cursor(t, curs)                      /* change cursor */
register TEXTWIND  *t;
register int  curs;
{
        register int    oldcurs;

        if (curs != TNOCURS && curs != TBLKCURS)
                return(-1);
        oldcurs = t->cursor;
        if (curs != oldcurs)
                togglecurs(t);
        t->cursor = curs;
        return(oldcurs);
}


void
xt_close(t)                             /* close text window */
register TEXTWIND  *t;
{
        register int  i;

        XFreeFont(t->dpy, t->f);
        XFreeGC(t->dpy,t->gc);
        XDestroyWindow(t->dpy, t->w);
        for (i = 0; i < t->nr; i++)
                free(t->lp[i]);
        free((void *)t->lp);
        free((void *)t);
}


static void
togglecurs(t)
register TEXTWIND  *t;
{
        XSetFunction(t->dpy, t->gc, GXinvert);
        XSetPlaneMask(t->dpy, t->gc, 1L);
        XFillRectangle(t->dpy, t->w, t->gc, 
                        t->c*Width(t->f)+LEFTMAR, t->r*Height(t->f),
                        Width(t->f), Height(t->f));
        XSetFunction(t->dpy, t->gc, GXcopy);
        XSetPlaneMask(t->dpy, t->gc, ~0L);
}
Revision:	2.9
Committed:	Mon Jun 30 14:59:13 2003 UTC (20 years, 10 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad5R4, rad5R2, rad4R2P2, rad5R0, rad5R1, rad3R7P2, rad3R7P1, rad4R2, rad4R1, rad4R0, rad3R6, rad3R6P1, rad3R8, rad3R9, rad4R2P1, rad5R3, HEAD
Changes since 2.8:	+5 -10 lines
Log Message:	Replaced most outdated BSD function calls with their posix equivalents, and cleaned up a few other platform dependencies.
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	schorsch	2.9	static const char RCSid[] = "$Id: x11twind.c,v 2.8 2003/04/11 19:32:00 greg Exp $";
3	greg	1.1	#endif
4			/*
5			* x11twind.c - routines for X11 text windows.
6			*
7			* Written by G. Ward
8			* 10/30/87
9			*
10			* Modified for X11 by B. V. Smith
11			* 9/26/88
12			*/
13
14	greg	2.6	#include "copyright.h"
15	greg	2.5
16	greg	1.1	#include <stdio.h>
17	greg	2.5	#include <stdlib.h>
18	schorsch	2.9	#include <string.h>
19	greg	1.1	#include <X11/Xlib.h>
20
21			#include "x11twind.h"
22
23			#define checkcurs(t) if ((t)->cursor) togglecurs(t)
24
25			#define restorecurs checkcurs
26
27			/* width/height of a character in fontstruct f */
28			#define Width(f) ((f)->max_bounds.rbearing - (f)->min_bounds.lbearing)
29			#define Height(f) ((f)->ascent + (f)->descent)
30			#define YStart(f) ((f)->ascent)
31
32	greg	2.5	static void togglecurs();
33	greg	2.3
34	greg	1.1
35			TEXTWIND *
36	greg	2.2	xt_open(dpy, parent, x, y, width, height, bw, fore, back, fontname)
37			Display *dpy;
38			Window parent;
39			int x, y;
40			int width, height;
41			int bw;
42			unsigned long fore, back;
43			char *fontname;
44	greg	1.1	{
45			register int i;
46			register TEXTWIND *t;
47
48			if ((t = (TEXTWIND *)malloc(sizeof(TEXTWIND))) == NULL)
49			return(NULL);
50
51			t->dpy = dpy;
52	greg	2.2	t->w = XCreateSimpleWindow(dpy, parent, x, y, width, height,
53			bw, fore, back);
54	greg	1.1	if (t->w == 0)
55			return(NULL);
56			XMapWindow(dpy, t->w);
57
58			if ((t->f = XLoadQueryFont(dpy, fontname)) == 0)
59			return(NULL);
60
61			/* if (!t->f.fixedwidth) check for fixedwidth later
62			return(NULL); */
63	greg	2.2
64	greg	1.1	t->gc = XCreateGC(dpy,t->w,0,NULL);
65	greg	2.2	XSetState(dpy, t->gc, fore, back, GXcopy, AllPlanes);
66	greg	1.1	XSetFont(dpy, t->gc, t->f->fid);
67
68			t->nc = (width - LEFTMAR) /
69			Width(t->f); /* number of columns */
70			t->nr = height /
71			Height(t->f); /* number of rows */
72			if (t->nc < 1 \|\| t->nr < 1)
73			return(NULL);
74			if ((t->lp = (char *)calloc(t->nr, sizeof(char ))) == NULL)
75			return(NULL);
76			for (i = 0; i < t->nr; i++)
77			if ((t->lp[i] = calloc(t->nc+1, 1)) == NULL)
78			return(NULL);
79			t->r = t->c = 0;
80			t->cursor = TNOCURS;
81			return(t);
82
83			}
84
85
86	greg	2.5	void
87	greg	1.1	xt_putc(c, t) /* output a character */
88	greg	2.7	int c;
89	greg	1.1	register TEXTWIND *t;
90			{
91	greg	2.8	char ch[2];
92
93	greg	1.1	checkcurs(t);
94			switch (c) {
95			case '\n':
96			if (t->r >= t->nr - 1)
97			xt_delete(t, 0); /* scroll up 1 line */
98			else if (t->r < t->nr - 1)
99			t->r++;
100			/* fall through */
101			case '\r':
102			t->c = 0;
103			break;
104			case '\b':
105			while (t->c < 1 && t->r > 0)
106			t->c = strlen(t->lp[--t->r]);
107			if (t->c > 0)
108			t->c--;
109			break;
110			default:
111			if (t->c >= t->nc)
112			xt_putc('\n', t);
113	greg	2.8	ch[0] = c; ch[1] = '\0';
114	greg	1.1	XDrawImageString(t->dpy, t->w, t->gc, LEFTMAR+t->c*Width(t->f),
115	greg	2.8	YStart(t->f)+t->r*Height(t->f), ch, 1);
116	greg	1.1	t->lp[t->r][t->c++] = c;
117			break;
118			}
119			restorecurs(t);
120	greg	2.7	}
121
122
123			void
124			xt_puts(s, t) /* output a string */
125			register char *s;
126			TEXTWIND *t;
127			{
128			int oldcurs;
129
130			oldcurs = xt_cursor(t, TNOCURS); /* for efficiency */
131			while (*s)
132			xt_putc(*s++, t);
133			xt_cursor(t, oldcurs);
134	greg	1.1	}
135
136
137	greg	2.5	void
138	greg	1.1	xt_delete(t, r) /* delete a line */
139			register TEXTWIND *t;
140			int r;
141			{
142			char *cp;
143			register int i;
144
145			if (r < 0 \|\| r >= t->nr)
146			return;
147			checkcurs(t);
148			/* move lines */
149			XCopyArea(t->dpy, t->w, t->w, t->gc, LEFTMAR, (r+1)*Height(t->f),
150			t->ncWidth(t->f), (t->nr-1-r)Height(t->f),
151			LEFTMAR, r*Height(t->f));
152			cp = t->lp[r];
153			for (i = r; i < t->nr-1; i++)
154			t->lp[i] = t->lp[i+1];
155			t->lp[t->nr-1] = cp;
156			/* clear bottom */
157			XClearArea(t->dpy, t->w, LEFTMAR, (t->nr-1)*Height(t->f),
158			t->nc*Width(t->f), Height(t->f),(Bool) 0);
159
160	schorsch	2.9	memset(cp, '\0', t->nc);
161	greg	1.1	restorecurs(t); /* should we reposition cursor? */
162			}
163
164
165	greg	2.5	void
166	greg	1.1	xt_insert(t, r) /* insert a line */
167			register TEXTWIND *t;
168			int r;
169			{
170			char *cp;
171			register int i;
172
173			if (r < 0 \|\| r >= t->nr)
174			return;
175			checkcurs(t);
176			/* move lines */
177			XCopyArea(t->dpy, t->w, t->w, t->gc, LEFTMAR, r*Height(t->f), LEFTMAR,
178			(r+1)Height(t->f), t->ncWidth(t->f),
179			(t->nr-1-r)*Height(t->f));
180			cp = t->lp[t->nr-1];
181			for (i = t->nr-1; i > r; i--)
182			t->lp[i] = t->lp[i-1];
183			t->lp[r] = cp;
184			/* clear new line */
185			XClearArea(t->dpy, t->w, LEFTMAR, r*Height(t->f),
186			t->nc*Width(t->f), Height(t->f), (Bool) 0);
187	schorsch	2.9	memset(cp, '\0', t->nc);
188	greg	1.1	restorecurs(t); /* should we reposition cursor? */
189			}
190
191
192	greg	2.5	void
193	greg	1.1	xt_redraw(t) /* redraw text window */
194			register TEXTWIND *t;
195			{
196			register int i;
197
198			XClearWindow(t->dpy, t->w);
199			for (i = 0; i < t->nr; i++)
200			if (strlen(t->lp[i]) > 0)
201			XDrawImageString(t->dpy, t->w, t->gc, LEFTMAR,
202			YStart(t->f)+i*Height(t->f),
203			t->lp[i], strlen(t->lp[i]));
204			restorecurs(t);
205			}
206
207
208	greg	2.5	void
209	greg	1.1	xt_clear(t) /* clear text window */
210			register TEXTWIND *t;
211			{
212			register int i;
213
214			XClearWindow(t->dpy, t->w);
215			for (i = 0; i < t->nr; i++)
216	schorsch	2.9	memset(t->lp[i], '\0', t->nc);
217	greg	1.1	t->r = t->c = 0;
218			restorecurs(t);
219			}
220
221
222	greg	2.5	void
223	greg	1.1	xt_move(t, r, c) /* move to new position */
224			register TEXTWIND *t;
225			int r, c;
226			{
227			if (r < 0 \|\| c < 0 \|\| r >= t->nr \|\| c >= t->nc)
228			return;
229			checkcurs(t);
230			t->r = r;
231			t->c = c;
232			restorecurs(t);
233			}
234
235
236			int
237			xt_cursor(t, curs) /* change cursor */
238			register TEXTWIND *t;
239			register int curs;
240			{
241			register int oldcurs;
242
243			if (curs != TNOCURS && curs != TBLKCURS)
244			return(-1);
245			oldcurs = t->cursor;
246			if (curs != oldcurs)
247			togglecurs(t);
248			t->cursor = curs;
249			return(oldcurs);
250			}
251
252
253	greg	2.5	void
254	greg	1.1	xt_close(t) /* close text window */
255			register TEXTWIND *t;
256			{
257			register int i;
258
259			XFreeFont(t->dpy, t->f);
260			XFreeGC(t->dpy,t->gc);
261			XDestroyWindow(t->dpy, t->w);
262			for (i = 0; i < t->nr; i++)
263			free(t->lp[i]);
264	greg	2.5	free((void *)t->lp);
265			free((void *)t);
266	greg	1.1	}
267
268
269	greg	2.5	static void
270	greg	1.1	togglecurs(t)
271			register TEXTWIND *t;
272			{
273			XSetFunction(t->dpy, t->gc, GXinvert);
274			XSetPlaneMask(t->dpy, t->gc, 1L);
275			XFillRectangle(t->dpy, t->w, t->gc,
276			t->cWidth(t->f)+LEFTMAR, t->rHeight(t->f),
277			Width(t->f), Height(t->f));
278			XSetFunction(t->dpy, t->gc, GXcopy);
279			XSetPlaneMask(t->dpy, t->gc, ~0L);
280			}