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/* Copyright (C) 1994 - 1996
Olav Woelfelschneider (wosch@rbg.informatik.th-darmstadt.de)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA.
*/
#include "McApp.h"
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "McText.h"
McText *McCreateText(McWindow *mcw, const string_t text, GC gc,
XFontStruct *font, int x, int y) {
McText *txt = (McText *) calloc(sizeof(McText), 1);
if (!gc) gc=mcw->app->gc[GC_NORMAL];
if (!font) font=mcw->app->defaultFont;
txt->x = x;
txt->y = y;
txt->text = NULL;
txt->font = font;
txt->next = NULL;
McChangeText(mcw, txt, text, gc);
return txt;
}
void McChangeText(McWindow *mcw, McText *txt, const string_t text, GC gc) {
int direction, ascent, descent;
XCharStruct overall;
XTextExtents(txt->font, text, strlen(text), &direction, &ascent,
&descent, &overall);
txt->width = overall.width;
txt->height = ascent + descent + 1;
if (text) {
if (txt->text)
free(txt->text);
txt->text = strdup(text);
}
if (gc) txt->gc = gc;
}
void McFreeText(McText *txt) {
if (txt->text)
free(txt->text);
free(txt);
}
void McWriteText(McWindow *mcw, Window win, McText *txt, GC gc, int x, int y) {
GC ggc;
if (!win) win=mcw->clientwin;
while(txt) {
if (gc) ggc=gc; else ggc=txt->gc;
XSetFont(mcw->app->display, ggc, txt->font->fid);
XDrawImageString(mcw->app->display, win, gc?gc:txt->gc,
txt->x+x, txt->y+y+txt->font->ascent,
txt->text,strlen(txt->text));
txt=txt->next;
}
}
int McCalculateText(XFontStruct *font, unsigned char *text,
int *lines, int *maxwidth, McLine *line) {
int len, i, height;
unsigned char *begin, *end, *chp;
int direction, ascent, descent, ch, maxw;
int orientation, offset, maxoffset;
XCharStruct overall;
*lines=0; orientation=MCTXT_CENTERED; maxoffset=0;
begin=text;
while(*begin) {
offset=0;
end=begin;
while((*end) && (*end!='\n')) end++;
len=end-begin;
if (*begin=='&') {
switch(begin[1]) {
case 'c':
orientation=MCTXT_CENTERED;
begin+=2;
break;
case 'l':
orientation=MCTXT_FLUSHLEFT;
begin+=2;
break;
case 'r':
orientation=MCTXT_FLUSHRIGHT;
begin+=2;
break;
case 'L':
orientation=MCTXT_FLUSHLEFT;
begin+=2;
ch=*begin++;
if (len && (chp=memchr(begin, ch, len)) && (chp>begin)) {
XTextExtents(font, begin, chp-begin, &direction,
&ascent, &descent, &overall);
offset=overall.width;
}
break;
case '&':
begin++;
break;
default:
break;
}
}
XTextExtents(font, begin, len, &direction, &ascent, &descent, &overall);
/* Split text into several lines if maxwidth is set */
while ((*maxwidth) && (overall.width>*maxwidth)) {
end--;
while((end>begin) && (*end!=32) && (*end!=9)) end--;
if (end<=begin) { /* Split failed, text too long */
end=begin+len;
break;
}
len=end-begin;
XTextExtents(font, begin, len, &direction, &ascent, &descent, &overall);
}
if (offset>maxoffset) maxoffset=offset;
line[*lines].width=overall.width;
line[*lines].len=len;
line[*lines].offset=offset;
line[*lines].data=begin;
line[*lines].orientation=orientation;
(*lines)++;
if (!*end) break;
*end=0;
begin=end+1;
}
maxw=0; height=0;
for (i=0; i<*lines; i++) {
line[i].offset=maxoffset-line[i].offset;
line[i].width+=line[i].offset;
line[i].height=ascent+descent+2;
if (line[i].width>maxw) maxw=line[i].width;
height+=line[i].height;
}
if (*maxwidth==0) *maxwidth=maxw;
return height;
}
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