src/rt/x11twind.c

#ifndef lint
static const char       RCSid[] = "$Id$";
#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  <X11/Xlib.h>

#include  "x11twind.h"

#ifndef  BSD
#define  bzero(d,n)             (void)memset(d,0,n)
#endif

#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_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_putc(c, t)                           /* output a character */
char  c;
register TEXTWIND  *t;
{
        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);
                XDrawImageString(t->dpy, t->w, t->gc, LEFTMAR+t->c*Width(t->f), 
                        YStart(t->f)+t->r*Height(t->f), &c, 1);
                t->lp[t->r][t->c++] = c;
                break;
        }
        restorecurs(t);
}


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);

        bzero(cp, 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);
        bzero(cp, 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++)
                bzero(t->lp[i], 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:	2.6
Committed:	Tue Feb 25 02:47:23 2003 UTC (22 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R5
Changes since 2.5:	+1 -56 lines
Log Message:	Replaced inline copyright notice with #include "copyright.h"
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.5	static const char RCSid[] = "$Id$";
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
18	greg	2.5	#include <stdlib.h>
19
20	greg	1.1	#include <X11/Xlib.h>
21
22			#include "x11twind.h"
23
24	greg	1.2	#ifndef BSD
25			#define bzero(d,n) (void)memset(d,0,n)
26			#endif
27
28	greg	1.1	#define checkcurs(t) if ((t)->cursor) togglecurs(t)
29
30			#define restorecurs checkcurs
31
32			/* width/height of a character in fontstruct f */
33			#define Width(f) ((f)->max_bounds.rbearing - (f)->min_bounds.lbearing)
34			#define Height(f) ((f)->ascent + (f)->descent)
35			#define YStart(f) ((f)->ascent)
36
37	greg	2.5	static void togglecurs();
38	greg	2.3
39	greg	1.1
40			TEXTWIND *
41	greg	2.2	xt_open(dpy, parent, x, y, width, height, bw, fore, back, fontname)
42			Display *dpy;
43			Window parent;
44			int x, y;
45			int width, height;
46			int bw;
47			unsigned long fore, back;
48			char *fontname;
49	greg	1.1	{
50			register int i;
51			register TEXTWIND *t;
52
53			if ((t = (TEXTWIND *)malloc(sizeof(TEXTWIND))) == NULL)
54			return(NULL);
55
56			t->dpy = dpy;
57	greg	2.2	t->w = XCreateSimpleWindow(dpy, parent, x, y, width, height,
58			bw, fore, back);
59	greg	1.1	if (t->w == 0)
60			return(NULL);
61			XMapWindow(dpy, t->w);
62
63			if ((t->f = XLoadQueryFont(dpy, fontname)) == 0)
64			return(NULL);
65
66			/* if (!t->f.fixedwidth) check for fixedwidth later
67			return(NULL); */
68	greg	2.2
69	greg	1.1	t->gc = XCreateGC(dpy,t->w,0,NULL);
70	greg	2.2	XSetState(dpy, t->gc, fore, back, GXcopy, AllPlanes);
71	greg	1.1	XSetFont(dpy, t->gc, t->f->fid);
72
73			t->nc = (width - LEFTMAR) /
74			Width(t->f); /* number of columns */
75			t->nr = height /
76			Height(t->f); /* number of rows */
77			if (t->nc < 1 \|\| t->nr < 1)
78			return(NULL);
79			if ((t->lp = (char *)calloc(t->nr, sizeof(char ))) == NULL)
80			return(NULL);
81			for (i = 0; i < t->nr; i++)
82			if ((t->lp[i] = calloc(t->nc+1, 1)) == NULL)
83			return(NULL);
84			t->r = t->c = 0;
85			t->cursor = TNOCURS;
86			return(t);
87
88			}
89
90
91	greg	2.5	void
92	greg	1.1	xt_puts(s, t) /* output a string */
93			register char *s;
94			TEXTWIND *t;
95			{
96			int oldcurs;
97
98			oldcurs = xt_cursor(t, TNOCURS); /* for efficiency */
99			while (*s)
100			xt_putc(*s++, t);
101			xt_cursor(t, oldcurs);
102			}
103
104
105	greg	2.5	void
106	greg	1.1	xt_putc(c, t) /* output a character */
107			char c;
108			register TEXTWIND *t;
109			{
110			checkcurs(t);
111			switch (c) {
112			case '\n':
113			if (t->r >= t->nr - 1)
114			xt_delete(t, 0); /* scroll up 1 line */
115			else if (t->r < t->nr - 1)
116			t->r++;
117			/* fall through */
118			case '\r':
119			t->c = 0;
120			break;
121			case '\b':
122			while (t->c < 1 && t->r > 0)
123			t->c = strlen(t->lp[--t->r]);
124			if (t->c > 0)
125			t->c--;
126			break;
127			default:
128			if (t->c >= t->nc)
129			xt_putc('\n', t);
130			XDrawImageString(t->dpy, t->w, t->gc, LEFTMAR+t->c*Width(t->f),
131			YStart(t->f)+t->r*Height(t->f), &c, 1);
132			t->lp[t->r][t->c++] = c;
133			break;
134			}
135			restorecurs(t);
136			}
137
138
139	greg	2.5	void
140	greg	1.1	xt_delete(t, r) /* delete a line */
141			register TEXTWIND *t;
142			int r;
143			{
144			char *cp;
145			register int i;
146
147			if (r < 0 \|\| r >= t->nr)
148			return;
149			checkcurs(t);
150			/* move lines */
151			XCopyArea(t->dpy, t->w, t->w, t->gc, LEFTMAR, (r+1)*Height(t->f),
152			t->ncWidth(t->f), (t->nr-1-r)Height(t->f),
153			LEFTMAR, r*Height(t->f));
154			cp = t->lp[r];
155			for (i = r; i < t->nr-1; i++)
156			t->lp[i] = t->lp[i+1];
157			t->lp[t->nr-1] = cp;
158			/* clear bottom */
159			XClearArea(t->dpy, t->w, LEFTMAR, (t->nr-1)*Height(t->f),
160			t->nc*Width(t->f), Height(t->f),(Bool) 0);
161
162			bzero(cp, t->nc);
163			restorecurs(t); /* should we reposition cursor? */
164			}
165
166
167	greg	2.5	void
168	greg	1.1	xt_insert(t, r) /* insert a line */
169			register TEXTWIND *t;
170			int r;
171			{
172			char *cp;
173			register int i;
174
175			if (r < 0 \|\| r >= t->nr)
176			return;
177			checkcurs(t);
178			/* move lines */
179			XCopyArea(t->dpy, t->w, t->w, t->gc, LEFTMAR, r*Height(t->f), LEFTMAR,
180			(r+1)Height(t->f), t->ncWidth(t->f),
181			(t->nr-1-r)*Height(t->f));
182			cp = t->lp[t->nr-1];
183			for (i = t->nr-1; i > r; i--)
184			t->lp[i] = t->lp[i-1];
185			t->lp[r] = cp;
186			/* clear new line */
187			XClearArea(t->dpy, t->w, LEFTMAR, r*Height(t->f),
188			t->nc*Width(t->f), Height(t->f), (Bool) 0);
189			bzero(cp, t->nc);
190			restorecurs(t); /* should we reposition cursor? */
191			}
192
193
194	greg	2.5	void
195	greg	1.1	xt_redraw(t) /* redraw text window */
196			register TEXTWIND *t;
197			{
198			register int i;
199
200			XClearWindow(t->dpy, t->w);
201			for (i = 0; i < t->nr; i++)
202			if (strlen(t->lp[i]) > 0)
203			XDrawImageString(t->dpy, t->w, t->gc, LEFTMAR,
204			YStart(t->f)+i*Height(t->f),
205			t->lp[i], strlen(t->lp[i]));
206			restorecurs(t);
207			}
208
209
210	greg	2.5	void
211	greg	1.1	xt_clear(t) /* clear text window */
212			register TEXTWIND *t;
213			{
214			register int i;
215
216			XClearWindow(t->dpy, t->w);
217			for (i = 0; i < t->nr; i++)
218			bzero(t->lp[i], t->nc);
219			t->r = t->c = 0;
220			restorecurs(t);
221			}
222
223
224	greg	2.5	void
225	greg	1.1	xt_move(t, r, c) /* move to new position */
226			register TEXTWIND *t;
227			int r, c;
228			{
229			if (r < 0 \|\| c < 0 \|\| r >= t->nr \|\| c >= t->nc)
230			return;
231			checkcurs(t);
232			t->r = r;
233			t->c = c;
234			restorecurs(t);
235			}
236
237
238			int
239			xt_cursor(t, curs) /* change cursor */
240			register TEXTWIND *t;
241			register int curs;
242			{
243			register int oldcurs;
244
245			if (curs != TNOCURS && curs != TBLKCURS)
246			return(-1);
247			oldcurs = t->cursor;
248			if (curs != oldcurs)
249			togglecurs(t);
250			t->cursor = curs;
251			return(oldcurs);
252			}
253
254
255	greg	2.5	void
256	greg	1.1	xt_close(t) /* close text window */
257			register TEXTWIND *t;
258			{
259			register int i;
260
261			XFreeFont(t->dpy, t->f);
262			XFreeGC(t->dpy,t->gc);
263			XDestroyWindow(t->dpy, t->w);
264			for (i = 0; i < t->nr; i++)
265			free(t->lp[i]);
266	greg	2.5	free((void *)t->lp);
267			free((void *)t);
268	greg	1.1	}
269
270
271	greg	2.5	static void
272	greg	1.1	togglecurs(t)
273			register TEXTWIND *t;
274			{
275			XSetFunction(t->dpy, t->gc, GXinvert);
276			XSetPlaneMask(t->dpy, t->gc, 1L);
277			XFillRectangle(t->dpy, t->w, t->gc,
278			t->cWidth(t->f)+LEFTMAR, t->rHeight(t->f),
279			Width(t->f), Height(t->f));
280			XSetFunction(t->dpy, t->gc, GXcopy);
281			XSetPlaneMask(t->dpy, t->gc, ~0L);
282			}