EventMethods.cs

using System;
using System.Runtime.InteropServices;
using System.Threading;
using System.Windows.Forms;
using be.gaudry.model.drawing;
using be.gaudry.view.dialogs;
 
namespace be.gaudry.events
{
    /// <summary>
    /// more infos on http://www.codeproject.com/cs/media/DIBtoBitmap.asp
    /// </summary>
    public static class EventMethods
    {
 
        public static void applicationThreadException(object sender, ThreadExceptionEventArgs e)
        {
            /*String msg = String.Format(
                "Une erreur est survenue dans l'application :\r\n\r\n{0}\r\n\r\nDésirez-vous plus d'informations ?\r\nOui : afficher les erreurs\r\nNon : quitter l'application\r\nAnnuler : ne pas quitter et ne pas afficher l'erreur",
                e.Exception.Message
            );
            DialogResult dr = MessageBox.Show(
                msg,
                "Erreur",
                MessageBoxButtons.YesNoCancel,
                MessageBoxIcon.Stop,
                MessageBoxDefaultButton.Button2);
            switch (dr)
            {
                case DialogResult.Yes:
                    new ThreadExceptionDialog(e.Exception).Show();
                    break;
                case DialogResult.Cancel:
                    return;
                default:
                    Application.Exit();
                    break;
            }*/
            new CriticalExceptionDialog(e.Exception).Show();
        }
 
        public static bool imageDragDrop(object sender, DragEventArgs e, PictureBox pictureBox)
        {
            bool modified = false;
 
 
            /*System.Diagnostics.Debug.WriteLine(string.Format("Un élément est déposé par {0}",sender));
            string[] formats = e.Data.GetFormats();
            
            foreach (string sf in formats)
            {
                System.Diagnostics.Debug.WriteLine(string.Format("Type : {0}", sf)); ;
            }
            */
            /*
            if (e.Data.GetDataPresent(typeof(UniformResourceLocator)))
            {
                //editSpImgRTB.AppendText("\r\nType : image web");
            }*/
            if (e.Data.GetDataPresent(DataFormats.FileDrop))
            {
 
                string[] dropFiles = (string[])e.Data.GetData(DataFormats.FileDrop);
                if (ImageHelper.isImg(dropFiles[0]))
                {
                    pictureBox.ImageLocation = dropFiles[0];
                    //modified = true;
                    return true;
                }
                else
                {
                    Form form = sender as Form;
                    MessageBox.Show(
                         form,
                         string.Format(
                                "Le fichier déposé n'est pas une image valide : {0}",
                                System.IO.Path.GetFileName(dropFiles[0])
                                ),
                         "Modification d'image",
                         MessageBoxButtons.OK,
                         MessageBoxIcon.Exclamation,
                         MessageBoxDefaultButton.Button1
                         );
                }
 
                /*StringBuilder str = new StringBuilder();
                foreach (string s in dropFiles)
                {
                    str.Append("\r\n");
                    str.Append(s);
                }
                editSpImgRTB.AppendText(str.ToString());*/
            }
            if (e.Data.GetDataPresent(typeof(string)))
            {
                //System.Diagnostics.Debug.WriteLine("Type2 : texte");
                string url = e.Data.GetData("UniformResourceLocator") as string;
                if (url == null) url = e.Data.GetData("UniformResourceLocatorW") as string;
                if(url!=null)
                {
                    pictureBox.ImageLocation = url;
                    return true;
                    //System.Diagnostics.Debug.WriteLine("Type2 : url => "+url);
                }
            }
 
 
 
            if (e.Data.GetDataPresent(typeof(System.Drawing.Bitmap)))
            {
                pictureBox.Image = (System.Drawing.Bitmap)e.Data.GetData(typeof(System.Drawing.Bitmap));
                //modified = true;
                return true;
                /*editSpImgPictureBox.Image = Image.FromStream(
                    System.Net.HttpWebRequest.Create(
                        "http://www.zeetelevision.com/images/today.jpg"
                        ).GetResponse().GetResponseStream()
                    );
                */
            }
            else if (e.Data.GetDataPresent(typeof(System.Net.WebRequestMethods.File)))
            {
                string str = (string)e.Data.GetData(typeof(string));
                //System.Diagnostics.Debug.WriteLine("Type3 : " + str);
                pictureBox.Image = System.Drawing.Image.FromStream(
                    System.Net.HttpWebRequest.Create(
                        str
                        ).GetResponse().GetResponseStream()
                    );
                //modified = true;
                return true;
            }
            else if (e.Data.GetDataPresent(DataFormats.Dib))//DeviceIndependentBitmap
            {
                /*System.Drawing.Bitmap bmp = (System.Drawing.Bitmap)e.Data.GetData(DataFormats.Bitmap, true);
                System.Diagnostics.Debug.WriteLine("DeviceIndependentBitmap bmp test");
                try
                {
                    if (bmp != null)
                    {
                        System.Diagnostics.Debug.WriteLine("DeviceIndependentBitmap bmp ok");
                        pictureBox.Image = bmp;
                        modified = true;
                    }
                }
                catch (Exception exept) { System.Diagnostics.Debug.WriteLine("DeviceIndependentBitmap error : " + exept.StackTrace); }
                
                object obj = e.Data.GetData(DataFormats.Dib);
                //System.Diagnostics.Debug.WriteLine("DeviceIndependentBitmap bmp test");
                System.IO.MemoryStream stream = obj as System.IO.MemoryStream;
                if (stream != null)
                {
 
                    //System.Diagnostics.Debug.WriteLine("DeviceIndependentBitmap bmp ok"); 
                    byte[] img = stream.ToArray();
                    IntPtr p = Marshal.AllocCoTaskMem(Marshal.SizeOf(img[0]) * img.Length);
                    Marshal.Copy(img, 0, p, img.Length);
                    try
                    {
                        pictureBox.Image = TwainGui.DibToImage.WithStream(p);
                    }
                    catch (Exception exept) { System.Diagnostics.Debug.WriteLine("DeviceIndependentBitmap error : " + exept.StackTrace); }
                    finally
                    {
                        Marshal.FreeCoTaskMem(p);
                    }
                }*/
                System.IO.MemoryStream stream = e.Data.GetData(DataFormats.Dib) as System.IO.MemoryStream;
                if (stream != null)
                {
 
                    byte[] img = stream.ToArray();
                    IntPtr p = Marshal.AllocCoTaskMem(Marshal.SizeOf(img[0]) * img.Length);
                    Marshal.Copy(img, 0, p, img.Length);
                    try
                    {
                        pictureBox.Image = DibToImage.WithStream(p);
                        return true;
                    }
                    catch (Exception exept) 
                    { 
                        System.Diagnostics.Debug.WriteLine("DeviceIndependentBitmap error : " + exept.StackTrace); 
                    }
                    finally
                    {
                        Marshal.FreeCoTaskMem(p);
                    }
                }
 
            }
 
            #region from the URL of the image file
		    /*string hyperLinkUrl = null;
            string hyperLinkText = null;
            //
            try
            { 
                hyperLinkUrl = e.Data.GetData(typeof(string)) as string;
                // some browser deliver url and text
                // in UniformResourceLocator (Firebird)
                string[] tokens = hyperLinkUrl.Split('\\');
                if(tokens.Length>1)
                {
                    hyperLinkUrl = tokens[0];
                    hyperLinkText = tokens[1];
                }
                // we have to read FILEGROUPDESCRIPTOR to get the text (IE)
                else
                {
                    System.IO.Stream ioStream=
                    (System.IO.Stream)e.Data.GetData("FileGroupDescriptor");
                    byte[] contents = new Byte[512];
                    ioStream.Read(contents,0,512);
                    ioStream.Close();
                    System.Text.StringBuilder sb = new System.Text.StringBuilder();
                    //The magic number 76 is the size of that part of the
                    //FILEGROUPDESCRIPTOR structure before
                    // the filename starts - cribbed
                    //from another usenet post.
                    for (int i=76; contents[i] != 0; i++)
                    {
                        sb.Append((char)contents[i]);
                    }
                    if (!sb.ToString(sb.Length-4,4).ToLower().Equals(".url"))
                    {
                        System.Diagnostics.Debug.WriteLine("filename does not end in '.url'");
                    }
                    hyperLinkText = sb.ToString(0,sb.Length-4);
                }
                // do what ever you wanna do with the hyperlink
                //this.BeginInvoke(.....)
                pictureBox.ImageLocation = hyperLinkText;
                System.Diagnostics.Debug.WriteLine("url : " + hyperLinkText);
            }
            catch (System.Exception ex)
            {
                System.Diagnostics.Debug.WriteLine(ex.Message);
            }  */
	#endregion
 
            return modified;
        }
    }
}