//
// System.Drawing.Design.ImageEditor.cs
//
// Authors:
// Martin Willemoes Hansen (mwh@sysrq.dk)
// Andreas Nahr (ClassDevelopment@A-SoftTech.com)
//
// (C) 2003 Martin Willemoes Hansen
// (C) 2003 Andreas Nahr
// Copyright (C) 2007 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Text;
using System.IO;
using System.ComponentModel;
using System.Windows.Forms;
namespace System.Drawing.Design{
public class ImageEditor : UITypeEditor
{
private OpenFileDialog openDialog;
public ImageEditor()
{
}
public override object EditValue (ITypeDescriptorContext context,
IServiceProvider provider, object value)
{
openDialog = new OpenFileDialog();
openDialog.Title = Locale.GetText ("Open image file");
openDialog.CheckFileExists = true;
openDialog.CheckPathExists = true;
openDialog.Filter = CreateFilterEntry (this);
openDialog.Multiselect = false;
// Show the dialog
DialogResult result = openDialog.ShowDialog();
// Check the result and create a new image from the file
if (result == DialogResult.OK) {
return LoadFromStream (openDialog.OpenFile());
}
else
return value;
}
public override UITypeEditorEditStyle GetEditStyle (ITypeDescriptorContext context)
{
return UITypeEditorEditStyle.Modal;
}
public override bool GetPaintValueSupported (ITypeDescriptorContext context)
{
return true;
}
public override void PaintValue (PaintValueEventArgs e)
{
Graphics G = e.Graphics;
if (e.Value != null) {
Image I = (Image) e.Value;
G.DrawImage (I, e.Bounds);
}
G.DrawRectangle (Pens.Black, e.Bounds);
}
protected static string CreateExtensionsString (string[] extensions, string sep)
{
if (extensions.Length > 0) {
StringBuilder sb = new StringBuilder();
sb.Append (extensions[0]);
for (int x = 1; x < extensions.Length - 1; x++) {
sb.Append (sep);
sb.Append (extensions[x]);
}
return sb.ToString();
}
else {
return string.Empty;
}
}
protected static string CreateFilterEntry (ImageEditor e)
{
StringBuilder sb = new StringBuilder();
string ExtStr = CreateExtensionsString (e.GetExtensions(), ";");
sb.Append (e.GetFileDialogDescription());
sb.Append (" (" + ExtStr + ")" + "|");
sb.Append (ExtStr);
return sb.ToString();
}
protected virtual string[] GetExtensions()
{
return new string[] {"*.bmp", "*.gif", "*.jpg", "*.jpeg", "*.png", "*.ico", "*.emf", "*.wmf"};
}
protected virtual string GetFileDialogDescription()
{
return Locale.GetText ("All image files");
}
protected virtual Image LoadFromStream (Stream stream)
{
return new Bitmap (stream);
}
#if NET_2_0
[MonoTODO]
protected virtual Type[] GetImageExtenders ()
{
throw new NotImplementedException ();
}
#endif
}
}
|