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#ifndef lint |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* x11twind.c - routines for X11 text windows. |
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* |
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* Written by G. Ward |
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* 10/30/87 |
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* |
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* Modified for X11 by B. V. Smith |
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* 9/26/88 |
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*/ |
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|
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/* ==================================================================== |
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* The Radiance Software License, Version 1.0 |
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* |
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* Copyright (c) 1990 - 2002 The Regents of the University of California, |
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* through Lawrence Berkeley National Laboratory. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, |
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* if any, must include the following acknowledgment: |
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* "This product includes Radiance software |
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* (http://radsite.lbl.gov/) |
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* developed by the Lawrence Berkeley National Laboratory |
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* (http://www.lbl.gov/)." |
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* Alternately, this acknowledgment may appear in the software itself, |
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* if and wherever such third-party acknowledgments normally appear. |
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* |
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* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
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* and "The Regents of the University of California" must |
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* not be used to endorse or promote products derived from this |
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* software without prior written permission. For written |
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* permission, please contact [email protected]. |
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* |
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* 5. Products derived from this software may not be called "Radiance", |
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* nor may "Radiance" appear in their name, without prior written |
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* permission of Lawrence Berkeley National Laboratory. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
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* information on Lawrence Berkeley National Laboratory, please see |
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* <http://www.lbl.gov/>. |
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*/ |
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|
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#include <stdio.h> |
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|
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#include <stdlib.h> |
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|
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#include <X11/Xlib.h> |
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|
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#include "x11twind.h" |
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|
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#ifndef BSD |
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#define bzero(d,n) (void)memset(d,0,n) |
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#endif |
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|
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#define checkcurs(t) if ((t)->cursor) togglecurs(t) |
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|
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#define restorecurs checkcurs |
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|
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/* width/height of a character in fontstruct f */ |
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#define Width(f) ((f)->max_bounds.rbearing - (f)->min_bounds.lbearing) |
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#define Height(f) ((f)->ascent + (f)->descent) |
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#define YStart(f) ((f)->ascent) |
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|
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static void togglecurs(); |
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|
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|
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TEXTWIND * |
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xt_open(dpy, parent, x, y, width, height, bw, fore, back, fontname) |
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Display *dpy; |
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Window parent; |
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int x, y; |
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int width, height; |
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int bw; |
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unsigned long fore, back; |
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char *fontname; |
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{ |
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register int i; |
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register TEXTWIND *t; |
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|
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if ((t = (TEXTWIND *)malloc(sizeof(TEXTWIND))) == NULL) |
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return(NULL); |
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|
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t->dpy = dpy; |
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t->w = XCreateSimpleWindow(dpy, parent, x, y, width, height, |
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bw, fore, back); |
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if (t->w == 0) |
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return(NULL); |
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XMapWindow(dpy, t->w); |
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|
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if ((t->f = XLoadQueryFont(dpy, fontname)) == 0) |
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return(NULL); |
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|
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/* if (!t->f.fixedwidth) check for fixedwidth later |
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return(NULL); */ |
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|
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t->gc = XCreateGC(dpy,t->w,0,NULL); |
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XSetState(dpy, t->gc, fore, back, GXcopy, AllPlanes); |
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XSetFont(dpy, t->gc, t->f->fid); |
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|
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t->nc = (width - LEFTMAR) / |
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Width(t->f); /* number of columns */ |
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t->nr = height / |
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Height(t->f); /* number of rows */ |
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if (t->nc < 1 || t->nr < 1) |
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return(NULL); |
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if ((t->lp = (char **)calloc(t->nr, sizeof(char *))) == NULL) |
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return(NULL); |
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for (i = 0; i < t->nr; i++) |
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if ((t->lp[i] = calloc(t->nc+1, 1)) == NULL) |
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return(NULL); |
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t->r = t->c = 0; |
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t->cursor = TNOCURS; |
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return(t); |
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|
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} |
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|
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|
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void |
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xt_puts(s, t) /* output a string */ |
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register char *s; |
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TEXTWIND *t; |
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{ |
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int oldcurs; |
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|
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oldcurs = xt_cursor(t, TNOCURS); /* for efficiency */ |
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while (*s) |
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xt_putc(*s++, t); |
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xt_cursor(t, oldcurs); |
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} |
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|
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|
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void |
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xt_putc(c, t) /* output a character */ |
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char c; |
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register TEXTWIND *t; |
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{ |
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checkcurs(t); |
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switch (c) { |
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case '\n': |
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if (t->r >= t->nr - 1) |
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xt_delete(t, 0); /* scroll up 1 line */ |
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else if (t->r < t->nr - 1) |
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t->r++; |
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/* fall through */ |
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case '\r': |
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t->c = 0; |
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break; |
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case '\b': |
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while (t->c < 1 && t->r > 0) |
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t->c = strlen(t->lp[--t->r]); |
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if (t->c > 0) |
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t->c--; |
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break; |
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default: |
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if (t->c >= t->nc) |
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xt_putc('\n', t); |
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XDrawImageString(t->dpy, t->w, t->gc, LEFTMAR+t->c*Width(t->f), |
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YStart(t->f)+t->r*Height(t->f), &c, 1); |
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t->lp[t->r][t->c++] = c; |
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break; |
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} |
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restorecurs(t); |
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} |
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|
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|
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void |
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xt_delete(t, r) /* delete a line */ |
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register TEXTWIND *t; |
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int r; |
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{ |
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char *cp; |
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register int i; |
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|
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if (r < 0 || r >= t->nr) |
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return; |
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checkcurs(t); |
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/* move lines */ |
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XCopyArea(t->dpy, t->w, t->w, t->gc, LEFTMAR, (r+1)*Height(t->f), |
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t->nc*Width(t->f), (t->nr-1-r)*Height(t->f), |
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LEFTMAR, r*Height(t->f)); |
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cp = t->lp[r]; |
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for (i = r; i < t->nr-1; i++) |
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t->lp[i] = t->lp[i+1]; |
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t->lp[t->nr-1] = cp; |
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/* clear bottom */ |
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XClearArea(t->dpy, t->w, LEFTMAR, (t->nr-1)*Height(t->f), |
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t->nc*Width(t->f), Height(t->f),(Bool) 0); |
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|
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bzero(cp, t->nc); |
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restorecurs(t); /* should we reposition cursor? */ |
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} |
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|
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|
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void |
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xt_insert(t, r) /* insert a line */ |
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register TEXTWIND *t; |
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int r; |
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{ |
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char *cp; |
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register int i; |
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|
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if (r < 0 || r >= t->nr) |
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return; |
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checkcurs(t); |
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/* move lines */ |
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XCopyArea(t->dpy, t->w, t->w, t->gc, LEFTMAR, r*Height(t->f), LEFTMAR, |
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(r+1)*Height(t->f), t->nc*Width(t->f), |
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(t->nr-1-r)*Height(t->f)); |
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cp = t->lp[t->nr-1]; |
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for (i = t->nr-1; i > r; i--) |
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t->lp[i] = t->lp[i-1]; |
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t->lp[r] = cp; |
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/* clear new line */ |
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XClearArea(t->dpy, t->w, LEFTMAR, r*Height(t->f), |
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t->nc*Width(t->f), Height(t->f), (Bool) 0); |
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bzero(cp, t->nc); |
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restorecurs(t); /* should we reposition cursor? */ |
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} |
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|
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|
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void |
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xt_redraw(t) /* redraw text window */ |
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register TEXTWIND *t; |
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{ |
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register int i; |
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|
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XClearWindow(t->dpy, t->w); |
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for (i = 0; i < t->nr; i++) |
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if (strlen(t->lp[i]) > 0) |
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XDrawImageString(t->dpy, t->w, t->gc, LEFTMAR, |
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YStart(t->f)+i*Height(t->f), |
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t->lp[i], strlen(t->lp[i])); |
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restorecurs(t); |
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} |
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|
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|
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void |
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xt_clear(t) /* clear text window */ |
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register TEXTWIND *t; |
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{ |
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register int i; |
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|
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XClearWindow(t->dpy, t->w); |
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for (i = 0; i < t->nr; i++) |
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bzero(t->lp[i], t->nc); |
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t->r = t->c = 0; |
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restorecurs(t); |
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} |
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|
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|
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void |
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xt_move(t, r, c) /* move to new position */ |
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register TEXTWIND *t; |
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int r, c; |
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{ |
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if (r < 0 || c < 0 || r >= t->nr || c >= t->nc) |
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return; |
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checkcurs(t); |
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t->r = r; |
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t->c = c; |
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restorecurs(t); |
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} |
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|
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|
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int |
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xt_cursor(t, curs) /* change cursor */ |
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register TEXTWIND *t; |
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register int curs; |
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{ |
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register int oldcurs; |
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|
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if (curs != TNOCURS && curs != TBLKCURS) |
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return(-1); |
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oldcurs = t->cursor; |
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if (curs != oldcurs) |
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togglecurs(t); |
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t->cursor = curs; |
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return(oldcurs); |
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} |
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|
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|
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void |
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xt_close(t) /* close text window */ |
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register TEXTWIND *t; |
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{ |
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register int i; |
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|
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XFreeFont(t->dpy, t->f); |
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XFreeGC(t->dpy,t->gc); |
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XDestroyWindow(t->dpy, t->w); |
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for (i = 0; i < t->nr; i++) |
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free(t->lp[i]); |
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free((void *)t->lp); |
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free((void *)t); |
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} |
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|
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|
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static void |
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togglecurs(t) |
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register TEXTWIND *t; |
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{ |
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XSetFunction(t->dpy, t->gc, GXinvert); |
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XSetPlaneMask(t->dpy, t->gc, 1L); |
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XFillRectangle(t->dpy, t->w, t->gc, |
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t->c*Width(t->f)+LEFTMAR, t->r*Height(t->f), |
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Width(t->f), Height(t->f)); |
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XSetFunction(t->dpy, t->gc, GXcopy); |
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XSetPlaneMask(t->dpy, t->gc, ~0L); |
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} |
