Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WinForms / System / WinForms / Design / PictureBoxDesigner.cs / 1 / PictureBoxDesigner.cs
[assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Scope="member", Target="System.Windows.Forms.Design.PictureBoxDesigner..ctor()")] namespace System.Windows.Forms.Design { using System.Diagnostics; using System; using System.Design; using System.Windows.Forms; using System.Drawing; using Microsoft.Win32; using System.Drawing.Drawing2D; using System.ComponentModel; using System.Drawing.Design; using System.ComponentModel.Design; using System.Collections; ////// /// This class handles all design time behavior for the group box class. Group /// boxes may contain sub-components and therefore use the frame designer. /// internal class PictureBoxDesigner : ControlDesigner { private DesignerActionListCollection _actionLists; public PictureBoxDesigner() { AutoResizeHandles = true; } ////// /// This draws a nice border around our pictureBox. We need /// this because the pictureBox can have no border and you can't /// tell where it is. /// ///private void DrawBorder(Graphics graphics) { Control ctl = Control; Rectangle rc = ctl.ClientRectangle; Color penColor; // Black or white pen? Depends on the color of the control. // if (ctl.BackColor.GetBrightness() < .5) { penColor = ControlPaint.Light(ctl.BackColor); } else { penColor = ControlPaint.Dark(ctl.BackColor);; } Pen pen = new Pen(penColor); pen.DashStyle = DashStyle.Dash; rc.Width --; rc.Height--; graphics.DrawRectangle(pen, rc); pen.Dispose(); } /// /// /// Overrides our base class. Here we check to see if there /// is no border on the pictureBox. If not, we draw one so that /// the pictureBox shape is visible at design time. /// protected override void OnPaintAdornments(PaintEventArgs pe) { PictureBox pictureBox = (PictureBox)Component; if (pictureBox.BorderStyle == BorderStyle.None) { DrawBorder(pe.Graphics); } base.OnPaintAdornments(pe); } ////// /// Retrieves a set of rules concerning the movement capabilities of a component. /// This should be one or more flags from the SelectionRules class. If no designer /// provides rules for a component, the component will not get any UI services. /// public override SelectionRules SelectionRules { get { SelectionRules rules = base.SelectionRules; object component = Component; PropertyDescriptor propSizeMode = TypeDescriptor.GetProperties(Component)["SizeMode"]; if (propSizeMode != null) { PictureBoxSizeMode sizeMode = (PictureBoxSizeMode)propSizeMode.GetValue(component); if (sizeMode == PictureBoxSizeMode.AutoSize) { rules &= ~SelectionRules.AllSizeable; } } return rules; } } public override DesignerActionListCollection ActionLists { get { if (_actionLists == null) { _actionLists = new DesignerActionListCollection(); _actionLists.Add(new PictureBoxActionList(this)); } return _actionLists; } } } internal class PictureBoxActionList : DesignerActionList { private PictureBoxDesigner _designer; public PictureBoxActionList(PictureBoxDesigner designer) : base(designer.Component) { _designer = designer; } public PictureBoxSizeMode SizeMode { get { return ((PictureBox)Component).SizeMode; } set { TypeDescriptor.GetProperties(Component)["SizeMode"].SetValue(Component, value); } } public void ChooseImage() { EditorServiceContext.EditValue(_designer, Component, "Image"); } public override DesignerActionItemCollection GetSortedActionItems() { DesignerActionItemCollection items = new DesignerActionItemCollection(); items.Add(new DesignerActionMethodItem(this, "ChooseImage", SR.GetString(SR.ChooseImageDisplayName), SR.GetString(SR.PropertiesCategoryName), SR.GetString(SR.ChooseImageDescription), true)); items.Add(new DesignerActionPropertyItem("SizeMode", SR.GetString(SR.SizeModeDisplayName), SR.GetString(SR.PropertiesCategoryName), SR.GetString(SR.SizeModeDescription))); return items; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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