Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / Drawing / System / Drawing / Design / IconEditor.cs / 1 / IconEditor.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Drawing.Design { using System; using System.Collections; using System.ComponentModel; using System.Diagnostics; using System.Diagnostics.CodeAnalysis; using System.Drawing; using System.IO; using System.Runtime.InteropServices; using System.Windows.Forms; using System.Windows.Forms.ComponentModel; using System.Windows.Forms.Design; ////// /// /// [System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand, Flags=System.Security.Permissions.SecurityPermissionFlag.UnmanagedCode)] public class IconEditor : UITypeEditor { // NOTE: this class should be almost identical to ImageEditor. The main exception is PaintValue, // which has logic that should probably be copied into ImageEditor. internal static Type[] imageExtenders = new Type[] { }; internal FileDialog fileDialog; ///Provides an editor for visually picking an icon. ////// /// [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1818:DoNotConcatenateStringsInsideLoops")] protected static string CreateExtensionsString(string[] extensions, string sep) { if (extensions == null || extensions.Length == 0) return null; string text = null; for (int i = 0; i < extensions.Length - 1; i++) text = text + "*." + extensions[i] + sep; text = text + "*." + extensions[extensions.Length-1]; return text; } ///[To be supplied.] ////// /// [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly")] // previously shipped this way. Would be a breaking change. protected static string CreateFilterEntry(IconEditor e) { string desc = e.GetFileDialogDescription(); string exts = CreateExtensionsString(e.GetExtensions(),","); string extsSemis = CreateExtensionsString(e.GetExtensions(),";"); return desc + "(" + exts + ")|" + extsSemis; } ///[To be supplied.] ////// /// 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) { if (provider != null) { IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService)); if (edSvc != null) { if (fileDialog == null) { fileDialog = new OpenFileDialog(); string filter = CreateFilterEntry(this); for (int i = 0; i < imageExtenders.Length; i++) { Debug.Fail("Why does IconEditor have subclasses if Icon doesn't?"); } fileDialog.Filter = filter; } IntPtr hwndFocus = UnsafeNativeMethods.GetFocus(); try { if (fileDialog.ShowDialog() == DialogResult.OK) { FileStream file = new FileStream(fileDialog.FileName, FileMode.Open, FileAccess.Read, FileShare.Read); value = LoadFromStream(file); } } finally { if (hwndFocus != IntPtr.Zero) { UnsafeNativeMethods.SetFocus(new HandleRef(null, hwndFocus)); } } } } return value; } ////// /// Retrieves the editing style of the Edit method. If the method /// is not supported, this will return None. /// [SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")] // everything in this assembly is full trust. public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context) { return UITypeEditorEditStyle.Modal; } ////// /// protected virtual string GetFileDialogDescription() { return SR.GetString(SR.iconFileDescription); } ///[To be supplied.] ////// /// [SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")] // everything in this assembly is full trust. protected virtual string[] GetExtensions() { return new string[] { "ico"}; } ///[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; } ////// /// protected virtual Icon LoadFromStream(Stream stream) { return new Icon(stream); } ///[To be supplied.] ////// /// [SuppressMessage("Microsoft.Security", "CA2109:ReviewVisibleEventHandlers")] //Benign code [SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")] // everything in this assembly is full trust. public override void PaintValue(PaintValueEventArgs e) { Icon icon = e.Value as Icon; if (icon != null) { // If icon is smaller than rectangle, just center it unscaled in the rectangle Size iconSize = icon.Size; Rectangle rectangle = e.Bounds; if (icon.Width < rectangle.Width) { rectangle.X = (rectangle.Width - icon.Width) / 2; rectangle.Width = icon.Width; } if (icon.Height < rectangle.Height) { rectangle.X = (rectangle.Height - icon.Height) / 2; rectangle.Height = icon.Height; } e.Graphics.DrawIcon(icon, rectangle); } } } } // 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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