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/*
* Copyright (c) 1997
* Digital Equipment Corporation. All rights reserved.
*
* By downloading, installing, using, modifying or distributing this
* software, you agree to the following:
*
* 1. CONDITIONS. Subject to the following conditions, you may download,
* install, use, modify and distribute this software in source and binary
* forms:
*
* a) Any source code, binary code and associated documentation
* (including the online manual) used, modified or distributed must
* reproduce and retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* b) No right is granted to use any trade name, trademark or logo of
* Digital Equipment Corporation. Neither the "Digital Equipment
* Corporation" name nor any trademark or logo of Digital Equipment
* Corporation may be used to endorse or promote products derived from
* this software without the prior written permission of Digital
* Equipment Corporation.
*
* 2. DISCLAIMER. THIS SOFTWARE IS PROVIDED BY DIGITAL "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.IN NO EVENT SHALL DIGITAL BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <X11/Xlib.h>
#include <string.h>
#include "format.h"
static void formatMeasureText();
void formatText(dpy, textw, pgc, tfont, nformats, formatv, pwidth, pheight)
Display *dpy;
Window textw;
GC *pgc;
XFS *tfont;
int nformats;
Format *formatv;
int *pwidth, *pheight;
{
int fontheight, fontwidth;
int x, y;
int len, textwidth, xoffset;
int format;
int top, left, lmargin, rmargin;
int width, height;
char *buffer;
Bool bMLineCenter;
top = left = lmargin = rmargin = x = y = width = height = 0;
fontheight = tfont->ascent + tfont->descent;
fontwidth = tfont->max_bounds.width;
bMLineCenter = False;
for (format = 0; format < nformats; ++format) {
switch (formatv[format]) {
case FormatSetTop:
y = top = formatv[++format];
break;
case FormatSetLeft:
x = left = formatv[++format];
break;
case FormatHome:
x = left + lmargin;
y = top;
break;
case FormatCR:
x = left + lmargin;
break;
case FormatNL:
x = left + lmargin;
y += fontheight;
break;
case FormatSetY:
y = top + formatv[++format];
break;
case FormatSetTextY:
y = top + fontheight * formatv[++format];
break;
case FormatAddY:
y += formatv[++format];
break;
case FormatAddTextY:
y += fontheight * formatv[++format];
break;
case FormatAddHalfTextY:
y += (fontheight >> 1) * formatv[++format];
break;
case FormatSetX:
x = left + formatv[++format];
break;
case FormatSetTextX:
x = left + fontwidth * formatv[++format];
break;
case FormatAddX:
x += formatv[++format];
break;
case FormatAddTextX:
x += fontwidth * formatv[++format];
break;
case FormatAddHalfTextX:
x += (fontwidth >> 1) * formatv[++format];
break;
case FormatString:
len = strlen((char *)formatv[++format]);
if (textw)
XDrawString(dpy, textw, *pgc, x, y, (char *)formatv[format], len);
x += XTextWidth(tfont, (char *)formatv[format], len);
break;
case FormatStringCenter:
x = left;
len = strlen((char *)formatv[++format]);
textwidth = XTextWidth(tfont, (char *)formatv[format], len);
xoffset = MAX(lmargin, ((width >> 1) - (textwidth >> 1)));
if (textw)
XDrawString(dpy, textw, *pgc, x + xoffset, y,
(char *)formatv[format], len);
x += textwidth;
break;
case FormatMultiLine:
buffer = (char *)formatv[++format];
len = 0;
x = left;
while (*buffer) {
/* if first character in the line is a tab, then center */
if (buffer[len] == '\t') {
buffer++; /* don't print the tab */
bMLineCenter = True;
}
while ((buffer[len] != '\n') && buffer[len])
len++;
textwidth = XTextWidth(tfont, buffer, len);
if (textw) {
if (bMLineCenter) {
xoffset = MAX(lmargin, ((width >> 1) - (textwidth >> 1)));
bMLineCenter = False; /* ready for next line */
} else { /* normal print */
xoffset = lmargin;
}
XDrawString(dpy, textw, *pgc, left + xoffset, y,
(char *)buffer, len);
}
if (buffer[len]) {
width = MAX(width, left + lmargin + textwidth + rmargin);
buffer += len + 1;
len = 0;
y += fontheight;
}
else {
x = left + lmargin + textwidth;
break;
}
}
break;
case FormatMeasureText:
formatMeasureText(tfont, (nformats - format - 1),
&formatv[format + 1], &fontwidth, &fontheight);
break;
case FormatSetWidth:
width = formatv[++format];
break;
case FormatSetLMargin:
if ((lmargin = formatv[++format]) == -1)
lmargin = MAX(0, x - left);
break;
case FormatSetRMargin:
if ((rmargin = formatv[++format]) == -1)
rmargin = MAX(0, x - left);
break;
default: /* might want an error message here */
break;
} /* END switch */
width = MAX(width, x - left + rmargin);
height = MAX(height, y - top);
} /* END for */
if (pwidth) *pwidth = width;
if (pheight) *pheight = height;
} /* END formatText */
static void formatMeasureText(tfont, nformats, formatv, pwidth, pheight)
XFS *tfont;
int nformats;
Format *formatv;
int *pwidth, *pheight;
{
int fontheight, fontwidth;
int width, height;
int format;
unsigned minchar, maxchar;
unsigned char *buffer, thechar;
XCharStruct *xcs;
fontheight = fontwidth = 0;
minchar = tfont->min_char_or_byte2;
maxchar = tfont->max_char_or_byte2;
for (format = 0; format < nformats; ++format) {
switch (formatv[format]) {
case FormatHome: case FormatCR: case FormatNL: case FormatMeasureText:
/* nothing to do */
break;
case FormatString: case FormatStringCenter: case FormatMultiLine:
for (buffer = (unsigned char *)formatv[++format];
(thechar = *buffer);
buffer++) {
if ((thechar != '\n') && (thechar != '\t') &&
(minchar <= thechar) && (thechar <= maxchar)) {
xcs = &(tfont->per_char[thechar]);
if (fontwidth < (width = xcs->width))
fontwidth = width;
if (fontheight < (height = (xcs->ascent + xcs->descent)))
fontheight = height;
} /* END if thechar */
} /* END for buffer */
break;
default: /* most format instructions need to increment the counter */
format++;
break;
} /* END switch */
} /* END for */
if (pwidth) *pwidth = fontwidth;
if (pheight) *pheight = fontheight;
} /* END formatMeasureText */
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