using Qrakhen.Qamp.Memory;
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace Qrakhen.Qamp.Editor.Controls;

public partial class LineRenderer : UserControl
{
    public static readonly DependencyProperty LineBufferProperty = 
        DependencyProperty.Register(
            nameof(LineBuffer), 
            typeof(LineBuffer), 
            typeof(LineRenderer), 
            new FrameworkPropertyMetadata(null, FrameworkPropertyMetadataOptions.AffectsRender));

    public LineBuffer LineBuffer {
        get => (LineBuffer)GetValue(LineBufferProperty);
        set => SetValue(LineBufferProperty, value);
    }

    private readonly Typeface _typeface = new(new FontFamily("Consolas"), FontStyles.Normal, FontWeights.Normal, FontStretches.Normal);
    private const double FontSize = 14;
    private const double LineHeight = 18;

    public LineRenderer()
    {
        Height = LineHeight;
        SnapsToDevicePixels = true;
    }

    protected override void OnRender(DrawingContext drawingContext)
    {
        base.OnRender(drawingContext);

        if (string.IsNullOrEmpty(LineBuffer.Cached))
            return;

        var formattedText = new FormattedText(
            LineBuffer.Cached,
            System.Globalization.CultureInfo.CurrentCulture,
            FlowDirection.LeftToRight,
            _typeface,
            FontSize,
            Brushes.White,
            VisualTreeHelper.GetDpi(this).PixelsPerDip
        );

        drawingContext.DrawText(formattedText, new Point(2, 0));
    }
}