font_server.cxx

#include <cgv/media/font/font_server.h>
 
namespace cgv {
    namespace media {
        namespace font {
 
 
font_server_ptr& ref_font_server()
{
    static font_server_ptr fs;
    return fs;
}
 
font_server_ptr get_font_server()
{
    return ref_font_server();
}
 
font_ptr font_server::default_font(bool mono_space)
{
    // list typical monospace fonts that should be present on most operating systems
    static std::vector<std::string> monospace_font_names = {
        "Consolas", // Windows default, but should also be available on Mac OS.
        "Courier", // Should be available on Mac OS. Will also match Courier New (Windows) and Courier 10 Pitch (Linux-based systems).
        "FreeMono", // For Linux-based systems.
        "DejaVu Sans Mono" // Alternative for Linux-based systems.
    };
 
    // list typical sans-serif fonts that should be present on most operating systems
    static std::vector<std::string> sans_serif_font_names = {
        "Open Sans", // Microsoft font.
        "Arial", // Available on Windows. Should also be available on MacOS.
        "Tahoma", // Available on Windows. Should also be available on MacOS.
        "DejaVu Sans", // Available on Linux-based systems.
        "Lucida", // Available on Mac OS. Will also match Lucida Grande.
        "Helvetica" // Available on Mac OS. Will also match Helvetica Neue.
    };
 
    font_ptr f;
 
    auto& default_font_names = mono_space ? monospace_font_names : sans_serif_font_names;
    for(const auto& font_name : default_font_names) {
        f = find_font_by_prefix(font_name);
        if(f)
            return f;
    }
 
    // select the first listed font if none of the default fonts could be found
    std::vector<const char*> font_names;
    enumerate_font_names(font_names);
 
    if(!font_names.empty())
        f = find_font(font_names.front());
 
    return f;
}
 
void register_font_server(font_server_ptr fs)
{
    ref_font_server() = fs;
}
 
        }
    }
}