Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WinForms / System / WinForms / Design / ImageListImageEditor.cs / 1 / ImageListImageEditor.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms.Design { using System.Runtime.InteropServices; using System.Diagnostics; using System.Diagnostics.CodeAnalysis; using System; using System.IO; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Drawing; using System.Design; using System.Reflection; using System.Drawing.Design; using System.Windows.Forms.ComponentModel; ////// /// public class ImageListImageEditor : ImageEditor { // VSWhidbey 95227: Metafile types are not supported in the ImageListImageEditor and should // not be displayed as an option. internal static Type[] imageExtenders = new Type[] { typeof(BitmapEditor)/*, gpr typeof(Icon), typeof(MetafileEditor)*/}; private OpenFileDialog fileDialog = null; // VSWhidbey 95227: accessor needed into the static field so that derived classes // can implement a different list of supported image types. [SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")] // everything in this assembly is full trust. protected override Type[] GetImageExtenders() { return imageExtenders; } ///Provides an editor that can perform default file searching for bitmap (.bmp) /// files. ////// /// Edits the given object value using the editor style provided by /// GetEditorStyle. A service provider is provided so that any /// required editing services can be obtained. /// [SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")] // everything in this assembly is full trust. public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value) { ArrayList images = new ArrayList(); if (provider != null) { IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService)); if (edSvc != null) { if (fileDialog == null) { fileDialog = new OpenFileDialog(); fileDialog.Multiselect = true; string filter = CreateFilterEntry(this); for (int i = 0; i < GetImageExtenders().Length; i++) { ImageEditor e = (ImageEditor) Activator.CreateInstance(GetImageExtenders()[i], BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.CreateInstance, null, null, null); //.CreateInstance(); Type myClass = this.GetType(); Type editorClass = e.GetType(); if (!myClass.Equals(editorClass) && e != null && myClass.IsInstanceOfType(e)) filter += "|" + CreateFilterEntry(e); } fileDialog.Filter = filter; } IntPtr hwndFocus = UnsafeNativeMethods.GetFocus(); try { if (fileDialog.ShowDialog() == DialogResult.OK) { foreach (string name in fileDialog.FileNames) { ImageListImage image; FileStream file = new FileStream(name, FileMode.Open, FileAccess.Read, FileShare.Read); image = LoadImageFromStream(file, name.EndsWith(".ico")); image.Name = System.IO.Path.GetFileName(name); images.Add(image); } } } finally { if (hwndFocus != IntPtr.Zero) { UnsafeNativeMethods.SetFocus(new HandleRef(null, hwndFocus)); } } } return images; } return value; } ////// /// [SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")] // everything in this assembly is full trust. protected override string GetFileDialogDescription() { return SR.GetString(SR.imageFileDescription); } ///[To be supplied.] ////// /// Determines if this editor supports the painting of a representation /// of an object's value. /// [SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")] // everything in this assembly is full trust. public override bool GetPaintValueSupported(ITypeDescriptorContext context) { return true; } ////// /// private ImageListImage LoadImageFromStream(Stream stream, bool imageIsIcon) { //Copy the original stream to a buffer, then wrap a //memory stream around it. This way we can avoid //locking the file byte[] buffer = new byte[stream.Length]; stream.Read(buffer, 0, (int)stream.Length); MemoryStream ms = new MemoryStream(buffer); return (ImageListImage)ImageListImage.ImageListImageFromStream(ms, imageIsIcon); } ///[To be supplied.] ////// /// [SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")] // everything in this assembly is full trust. public override void PaintValue(PaintValueEventArgs e) { if (e.Value is ImageListImage) { e= new PaintValueEventArgs(e.Context, ((ImageListImage)e.Value).Image, e.Graphics, e.Bounds); } base.PaintValue(e); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved./// Paints a representative value of the given object to the provided /// canvas. Painting should be done within the boundaries of the /// provided rectangle. /// ///
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