using Gdk;
using Gtk;
using Pilz.UI.Symbols;
using Size = System.Drawing.Size;

namespace Pilz.UI.Gtk.Symbols;

public abstract class GtkSymbolFactory<TSymbols> : BaseSymbolFactory<TSymbols>, IGtkSymbolFactory<TSymbols>
{

    public virtual Pixbuf? GetPixbuf(TSymbols svgImage, SymbolSize size)
    {
        return GetPixbuf(svgImage, ResolveCommonSize(size));
    }

    public virtual Pixbuf? GetPixbuf(TSymbols svgImage, Size size)
    {
        using var stream = GetImageRessourceStream(svgImage);

        if (stream is null)
            return null;

        Pixbuf pixbuf;
        if (size.IsEmpty)
            pixbuf = new(stream);
        else
            pixbuf = new(stream, size.Width, size.Height);

        return pixbuf;
    }

    public virtual Image? GetImage(TSymbols svgImage, SymbolSize size)
    {
        return GetImage(svgImage, ResolveCommonSize(size));
    }

    public virtual Image? GetImage(TSymbols svgImage, Size size)
    {
        if (GetPixbuf(svgImage, size) is Pixbuf pixbuf)
            return GetImageFromPixbuf(pixbuf);
        return null;
    }

    public virtual Image GetImageFromPixbuf(Pixbuf pixbuf)
    {
        return new Image(pixbuf);
    }
}