Subject:
Re: [nanogui] truetype with fltk
From:
Steven Scholz ####@####.####
Date:
29 Sep 2004 10:24:12 +0100
Message-Id: <415A7F34.3060306@imc-berlin.de>
Hinko Kocevar wrote:
> Hi,
>
> I've managed to build freetype-2.1.3 lib and I can see truetype fonts -
> tested with fontdemo. I have this simple app using fltk that just lists
> all found fonts and then displayed hello string using selected font.
> PCF fonts are working but with treutype fonts nano-X and nxlib are
> seraching for the wrong name of the font. Eg. I want to use bitstream
> vera sans at size 14; this is printk() output around XLoadFont:
>
> before _nxFindX11Font: -bitsteam-Bitstream Vera
> Sans-medium-r-normal--14-0-0-0-p-0-iso8859-1
> after _nxFindX11Font: (null)
> XLoadFont('-bitsteam-Bitstream Vera
> Sans-medium-r-normal--14-0-0-0-p-0-iso8859-1') = '(null)' [0]
>
> In fonts dir only '-bitsteam-Bitstream Vera
> Sans-medium-r-normal--0-0-0-0-p-0-iso8859-1' exists, since this font is
> variable height it does not contain size in it name.
>
> How can this be overcome?
By hacking the the above mentioned functions to look for e.g.
Sans-medium-r-normal--0-0-0-0-p-0-iso8859-1 if
Sans-medium-r-normal--14-0-0-0-p-0-iso8859-1 can not be found.
The attached patch is UGLY and only intended to show the idea!
Good luck,
--
Steven
diff -wru nxlib-0.45.prestine/LoadFont.c nxlib-0.45/LoadFont.c
--- nxlib-0.45.prestine/LoadFont.c 2003-08-11 22:04:45.000000000 +0200
+++ nxlib-0.45/LoadFont.c 2004-09-07 11:25:37.000000000 +0200
@@ -2,6 +2,41 @@
#include <stdlib.h>
#include <string.h>
+#include <ctype.h>
+// return dash number N, or pointer to ending null if none:
+const char* fl_font_word(const char* p, int n)
+{
+ while (*p) {
+ if (*p=='-') {
+ if (!--n)
+ break;
+ }
+ p++;
+ }
+ return p;
+}
+
+// return a pointer to a number we think is "point size":
+char* fl_find_fontsize(char* name)
+{
+ char* c = name;
+ // for standard x font names, try after 7th dash:
+ if (*c == '-') {
+ c = (char*)fl_font_word(c,7);
+ if (*c++ && isdigit(*c))
+ return c;
+ return 0; // malformed x font name?
+ }
+ char* r = 0;
+ // find last set of digits:
+ for (c++;* c; c++)
+ if (isdigit(*c) && !isdigit(*(c-1)))
+ r = c;
+ return r;
+}
+
+
+
static int
prefix(const char *prestr, char *allstr)
{
@@ -107,7 +142,10 @@
XLoadFont(Display * dpy, _Xconst char *name)
{
GR_FONT_ID font = 0;
- char *fontname;
+ char *fontname=NULL;
+ int size=0;
+
+// printf("%s(%d) fontname=%s, name=%s\n", __FUNCTION__, __LINE__, fontname, name);
/* first check for wildcards*/
if (any('*', name) || any('?', name)) {
@@ -121,18 +159,46 @@
} else
fontname = (char *)name;
+// printf("%s(%d) fontname=%s, name=%s\n", __FUNCTION__, __LINE__, fontname, name);
+
/* first try to find from X11/fonts.dir file*/
fontname = _nxFindX11Font(fontname);
+// printf("%s(%d) fontname=%s, name=%s\n", __FUNCTION__, __LINE__, fontname, name);
+
/* if not found, try 6x13 for "fixed"*/
if (!fontname && !strcmp(name, "fixed"))
fontname = _nxFindX11Font("6x13");
+// printf("%s(%d) fontname=%s, name=%s\n", __FUNCTION__, __LINE__, fontname, name);
+
+ if (!fontname) {
+ char namebuffer[1024]; // holds scalable font name
+ char* c = fl_find_fontsize(name);
+ if (c) {
+ int thissize = c ? atoi(c) : 1;
+ int thislength = strlen(name);
+ int l = c - name;
+ memcpy(namebuffer, name, l);
+ l += sprintf(namebuffer+l,"%d", 0);
+ while (*c != '-')
+ c++;
+ strcpy(namebuffer+l, c);
+ printf("Found font size=%d\n", thissize);
+ printf("New name: %s...\n", namebuffer);
+ fontname = _nxFindX11Font(namebuffer);
+ size = thissize;
+ }
+ }
+
+// printf("%s(%d) fontname=%s, name=%s\n", __FUNCTION__, __LINE__, fontname, name);
+
/* found font, load into server*/
if (fontname)
- font = GrCreateFont(fontname, 0, NULL);
+ font = GrCreateFont(fontname, size, NULL);
-printf("XLoadFont('%s') = '%s' [%d]\n", name, fontname, font);
+// printf("%s(%d) fontname=%s, name=%s\n", __FUNCTION__, __LINE__, fontname, name);
+//printf("XLoadFont('%s') = '%s' [%d]\n", name, fontname, font);
if (fontname)
Xfree(fontname);
return font;
