Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Activities / Designers / WhileDesigner.cs / 1305376 / WhileDesigner.cs
namespace System.Workflow.Activities { using System; using System.Diagnostics; using System.Text; using System.Reflection; using System.Collections; using System.CodeDom; using System.ComponentModel; using System.ComponentModel.Design; using System.Drawing; using System.Drawing.Drawing2D; using System.Workflow.ComponentModel; using System.Workflow.ComponentModel.Design; using System.Collections.ObjectModel; using System.Runtime.Serialization; #region Class WhileDesigner [ActivityDesignerTheme(typeof(WhileDesignerTheme))] internal sealed class WhileDesigner: SequentialActivityDesigner { #region Properties and Methods protected override void Initialize(Activity activity) { base.Initialize(activity); HelpText = DR.GetString(DR.DropActivityHere); } protected override void OnPaint(ActivityDesignerPaintEventArgs e) { base.OnPaint(e); if (Expanded) { CompositeDesignerTheme compositeDesignerTheme = e.DesignerTheme as CompositeDesignerTheme; Debug.Assert(compositeDesignerTheme != null); if (compositeDesignerTheme == null) return; Rectangle bounds = Bounds; Rectangle textRectangle = TextRectangle; Rectangle imageRectangle = ImageRectangle; Point connectionPoint = Point.Empty; if (!imageRectangle.IsEmpty) connectionPoint = new Point(imageRectangle.Right + e.AmbientTheme.Margin.Width / 2, imageRectangle.Top + imageRectangle.Height / 2); else if (!textRectangle.IsEmpty) connectionPoint = new Point(textRectangle.Right + e.AmbientTheme.Margin.Width / 2, textRectangle.Top + textRectangle.Height / 2); else connectionPoint = new Point(bounds.Left + bounds.Width / 2 + e.AmbientTheme.Margin.Width / 2, bounds.Top + e.AmbientTheme.Margin.Height / 2); Point[] points = new Point[4]; points[0].X = bounds.Left + bounds.Width / 2; points[0].Y = bounds.Bottom - compositeDesignerTheme.ConnectorSize.Height / 3; points[1].X = bounds.Right - compositeDesignerTheme.ConnectorSize.Width / 3; points[1].Y = bounds.Bottom - compositeDesignerTheme.ConnectorSize.Height / 3; points[2].X = bounds.Right - compositeDesignerTheme.ConnectorSize.Width / 3; points[2].Y = connectionPoint.Y; points[3].X = connectionPoint.X; points[3].Y = connectionPoint.Y; DrawConnectors(e.Graphics, compositeDesignerTheme.ForegroundPen, points, LineAnchor.None, LineAnchor.ArrowAnchor); DrawConnectors(e.Graphics, compositeDesignerTheme.ForegroundPen, new Point[] { points[0], new Point(bounds.Left + bounds.Width / 2, bounds.Bottom) }, LineAnchor.None, LineAnchor.None); } } protected override Rectangle[] GetConnectors() { Rectangle[] connectors = base.GetConnectors(); CompositeDesignerTheme designerTheme = DesignerTheme as CompositeDesignerTheme; Debug.Assert(designerTheme != null); if (Expanded && connectors.GetLength(0) > 0) connectors[connectors.GetLength(0) - 1].Height = connectors[connectors.GetLength(0) - 1].Height - (((designerTheme != null) ? designerTheme.ConnectorSize.Height : 0) / 3); return connectors; } protected override Size OnLayoutSize(ActivityDesignerLayoutEventArgs e) { Size containerSize = base.OnLayoutSize(e); CompositeDesignerTheme compositeDesignerTheme = e.DesignerTheme as CompositeDesignerTheme; if (compositeDesignerTheme != null && Expanded) { containerSize.Width += 2 * compositeDesignerTheme.ConnectorSize.Width; containerSize.Height += compositeDesignerTheme.ConnectorSize.Height; } return containerSize; } public override bool CanInsertActivities(HitTestInfo insertLocation, ReadOnlyCollectionactivitiesToInsert) { //we only allow one activity to be inserted if (this == ActiveView.AssociatedDesigner && ContainedDesigners.Count > 0) return false; return base.CanInsertActivities(insertLocation, activitiesToInsert); } #endregion } #endregion #region WhileDesignerTheme internal sealed class WhileDesignerTheme : CompositeDesignerTheme { public WhileDesignerTheme(WorkflowTheme theme) : base(theme) { this.ShowDropShadow = false; this.ConnectorStartCap = LineAnchor.None; this.ConnectorEndCap = LineAnchor.ArrowAnchor; this.ForeColor = Color.FromArgb(0xFF, 0x52, 0x8A, 0xF7); this.BorderColor = Color.FromArgb(0xFF, 0xE0, 0xE0, 0xE0); this.BorderStyle = DashStyle.Dash; this.BackColorStart = Color.FromArgb(0x00, 0x00, 0x00, 0x00); this.BackColorEnd = Color.FromArgb(0x00, 0x00, 0x00, 0x00); } } #endregion } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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