Custom Font Problem (and possibly outdated documentation)

[ameasere]

I followed the documentation on how to add my own custom font into NanoGUI, but the code seems outdated.

The documentation says:

int fancyFont = nanogui::createFontMem(screen->nvgContext(), "fancy", "fancy.ttf");
// -1 signals error loading the font
if (fancyFont == -1)
    throw std::runtime_error("Could not load 'fancy.ttf'!");

new nanogui::Label(window, "Label Text", "fancy");

However this requires a resources.h file - which doesn't exist. This means createFontMem and nvgContext are both invalid here, and my font will not work. I tried replacing fonts, and adding it to themes.cpp but found it also broke the build process because it "wasn't defined in this scope".

I am editing the example4.cpp file as I love the OpenGL cube and want to incorporate it, however I cannot seem to inject my own font into the code. I posted the part where I need to inject it:

class ExampleApplication : public nanogui::Screen {
public:
    ExampleApplication() : nanogui::Screen(Eigen::Vector2i(750, 750), "APIHub", false) {
        using namespace nanogui;
        Window *window = new Window(this, "");
        window->setPosition(Vector2i(0, 0));
        window->setLayout(new GroupLayout());

        //Label with custom font here//

        mCanvas = new MyGLCanvas(window);
        mCanvas->setBackgroundColor({100, 100, 100, 255});
        mCanvas->setSize({250, 250});
        Widget *tools = new Widget(window);
        tools->setLayout(new BoxLayout(Orientation::Horizontal,
                                       Alignment::Middle, 0, 5));
        Button *b0 = new Button(tools, "Randomise Color");
        b0->setCallback([this]() { mCanvas->setBackgroundColor(Vector4i(rand() % 256, rand() % 256, rand() % 256, 255)); });

        Button *b1 = new Button(tools, "Randomise Rotation");
        b1->setCallback([this]() { mCanvas->setRotation(nanogui::Vector3f((rand() % 100) / 100.0f, (rand() % 100) / 100.0f, (rand() % 100) / 100.0f)); });

        performLayout();
    }

Another problem also arose: the nanogui::Screen isn't attached to a variable here (or as I can find anyway), therefore I cannot seem to find any way to get an nvgContext out of it.

Please help!