prs/prs.mobile.new/PRS.Mobile/CustomControls/ImageViewer/ImageViewerEditor.xaml.cs

using System;
using System.IO;
using System.Threading.Tasks;
using InABox.Mobile;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
//using static Android.Graphics.ImageDecoder;

namespace PRS.Mobile
{
    public delegate void SaveSelected(byte[] array);

	[XamlCompilation(XamlCompilationOptions.Compile)]
	public partial class ImageViewerEditor
    {
        private Action _deleteaction;
        private readonly Action<byte[]> _saveaction;

        public ImageViewerEditor(ImageSource source, Action<byte[]> save, Action delete = null)
        {
            _deleteaction = delete;
            _saveaction = save;
            
			InitializeComponent ();
            _delete.IsVisible = delete != null;
            _save.IsVisible = save != null;
            
            imageEditor.Source = source;
            imageEditor.ImageSaving += ImageEditor_ImageSaving;            
            imageEditor.ToolbarSettings.VisibleShapesItems = Syncfusion.SfImageEditor.XForms.ImageEditorShapes.Rectangle
                | Syncfusion.SfImageEditor.XForms.ImageEditorShapes.Circle
                | Syncfusion.SfImageEditor.XForms.ImageEditorShapes.Line
                | Syncfusion.SfImageEditor.XForms.ImageEditorShapes.Arrow;
        }

        private void ExitBtn_Clicked(object sender, EventArgs e)
        {
            Navigation.PopAsync();
        }

        private void ImageEditor_ImageSaving(object sender, Syncfusion.SfImageEditor.XForms.ImageSavingEventArgs args)
        {
            var stream = args.Stream;
            MemoryStream memoryStream = new MemoryStream();
            stream.CopyTo(memoryStream);
            byte[] array = memoryStream.ToArray();
            _saveaction?.Invoke(array);
            args.Cancel = true;
            Navigation.PopAsync();
        }

        private void DeleteBtn_Clicked(object sender, EventArgs e)
        {
            _deleteaction?.Invoke();
            Navigation.PopAsync();
        }

        private void SaveBtn_Clicked(object sender, MobileMenuButtonClickedEventArgs args)
        {
            imageEditor.Save();
        }
    }
}