inabox/inabox.wpf/DigitalForms/Designer/Controls/Fields/DFVideoControl.cs

using InABox.Core;
using InABox.WPF;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;

namespace InABox.DynamicGrid
{
    public class DFVideoControl : DynamicFormFieldControl<DFLayoutVideoField, DFLayoutVideoFieldProperties, byte[]>
    {
        Button PlayButton;
        Button PauseButton;
        MediaElement Player;
        bool firstPlay = true;

        byte[]? Data;

        protected override FrameworkElement Create()
        {
            var grid = new Grid();

            grid.ColumnDefinitions.Add(new ColumnDefinition { Width = GridLength.Auto });
            grid.ColumnDefinitions.Add(new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) });

            grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto });
            grid.RowDefinitions.Add(new RowDefinition { Height = new GridLength(1, GridUnitType.Star) });


            PlayButton = new Button
            {
                Width = 25,
                Height = 25,
                Margin = new Thickness(5)
            };

            PlayButton.Content = new Image
            {
                Source = Wpf.Resources.play_button.AsBitmapImage(),
            };
            PlayButton.Click += PlayButton_Click;
            PlayButton.SetGridPosition(0, 0);

            PauseButton = new Button
            {
                Width = 25,
                Height = 25,
                Margin = new Thickness(5),
                Visibility = Visibility.Hidden
            };
            PauseButton.Content = new Image
            {
                Source = Wpf.Resources.pause_button.AsBitmapImage()
            };
            PauseButton.Click += PauseButton_Click;
            PauseButton.SetGridPosition(0, 0);

            Player = new MediaElement();
            Player.Stretch = System.Windows.Media.Stretch.Fill;
            Player.Visibility = Visibility.Visible;
            Player.SetGridPosition(1, 0, 1, 2);

            grid.Children.Add(PlayButton);
            grid.Children.Add(PauseButton);
            grid.Children.Add(Player);

            return grid;
        }

        private void PlayButton_Click(object sender, RoutedEventArgs e)
        {
            var path = System.IO.Path.GetTempFileName();
            path = path.Substring(0, path.Length - 4) + ".mp4";

            System.IO.File.WriteAllBytes(path, GetValue());
            Player.Source = new Uri(path);

            firstPlay = false;
        }

        private void PauseButton_Click(object sender, RoutedEventArgs e)
        {
            Player.Pause();
            PauseButton.Visibility = Visibility.Hidden;
            PlayButton.Visibility = Visibility.Visible;
        }

        public override byte[] GetValue()
        {
            return Data ?? Array.Empty<byte>();
        }

        public override void SetValue(byte[]? value)
        {
            Data = value;
        }

        protected override bool IsEmpty() => Data is null || Data.Length == 0;
    }
}