fltk change font size

Altera_Forum · ‎09-01-2009

Hello,

i want to change the font and the fontsize in my app but not even the label or fonts-demo is working.

is there a known bug about this?

Altera_Forum · ‎09-24-2009

It works. Try the following (modified) demo app. Name it hello.cpp:

#include <fltk/Window.h># include <fltk/Widget.h># include <fltk/Font.h># include <fltk/run.h>
using namespace fltk;
int main(int argc, char **argv)
{
    fltk::Font** FontsList;
    int FontsCount = fltk::list_fonts(FontsList);
    Window *window = new Window(300, 180);
    window->begin();
    Widget *box = new Widget(20, 40, 260, 100, "Hello, World!");
    box->labelfont(FontsList);
    box->labelsize(36);
    box->labeltype(SHADOW_LABEL);
    window->end();
    window->show(argc, argv);
    return run();
}

Compile it with:

$ nios2-linux-uclibc-g++ -I/home/jars/nios2-linux/uClinux-dist/lib/fltk -c hello.cpp

$ nios2-linux-uclibc-g++ hello.o /home/jars/nios2-linux/uClinux-dist/lib/fltk/lib/libfltk2.a /home/jars/nios2-linux/uClinux-dist/staging/usr/lib/libX11.a /home/jars/nios2-linux/uClinux-dist/user/microwin/src/lib/libnano-X.a -lpthread -o hello

Remember to change the paths above to reflect your own system. You can have any font size by modifying the line:

box->labelsize(36);

Somethings to consider:

- I never got to compile the FLTK demo apps by simply selecting the item in menuconfig; I think it's broken;

- in /usr/fonts/truetype you should have your ttf fonts and a fonts.dir file:

/usr/fonts/truetype#  ls
DejaVuLGCSans.ttf                DejaVuLGCSansCondensed-Bold.ttf  
dejavulgcsans.ttf                dejavulgcsanscondensedbold.ttf   
fonts.dir                        
/usr/fonts/truetype#  cat fonts.dir 
2
dejavulgcsanscondensedbold.ttf -dejavu-DejaVuLGCSans-medium-r-bold--0-0-0-0-p-0-iso8859-1
dejavulgcsans.ttf -dejavu-DejaVuLGCSans-medium-r-normal--0-0-0-0-p-0-iso8859-1
/usr/fonts/truetype#

Cheers,

Ricardo.

Altera_Forum · ‎09-25-2009

$ nios2-linux-uclibc-g++ fltk_font.o /home/z125188/nios2-linux/uClinux-dist/lib/fltk/lib/libfltk2.a /home/z125188/nios2-linux/uClinux-dist/staging/usr/lib/libX11.a /home/z125188/nios2-linux/uClinux-dist/user/microwin/src/lib/libnano-X.a -lpthread -o fltk_font

/opt/nios2/usr/bin/nios2-linux-uclibc-ld.real: /home/z125188/nios2-linux/uClinux-dist/lib/fltk/lib/libfltk2.a(args.o): Relocations in generic ELF (EM: 3)

/home/z125188/nios2-linux/uClinux-dist/lib/fltk/lib/libfltk2.a: could not read symbols: File in wrong format

collect2: ld returned 1 exit status

thats hopefully my last error.

Altera_Forum · ‎09-27-2009

Please don't use the lib/fltk, as it was broken. Please enable nxlib under microwin. Then it will build nxlib and fltk with demos.

- Hippo

Altera_Forum · ‎08-30-2010

lib/fltk is good if you do some changes in the makefile

but fltk2 keyboard works not correctly