HighlightOverlayGlyph.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx35 / System.WorkflowServices / System / Workflow / ComponentModel / Design / HighlightOverlayGlyph.cs / 1305376 / HighlightOverlayGlyph.cs
                        

                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------

namespace System.Workflow.ComponentModel.Design 
{
    using System; 
    using System.Collections.Generic; 
    using System.Text;
    using System.Workflow.ComponentModel.Design; 
    using System.Drawing;
    using System.Drawing.Drawing2D;
    using System.Runtime.InteropServices;
 
    // 
    // This class provides the visualisation of the backdrop + hightlighted designer when 
    // in highlight view. 
    // 
    [ComVisible(false)] 
    internal class HighlightOverlayGlyph : DesignerGlyph
    {
        private Rectangle bounds;
        private List highlightedDesigners; 
        public HighlightOverlayGlyph(Rectangle bounds, List highlightedDesigners)
        { 
            this.HighlightedDesigners = highlightedDesigners; 
            this.Bounds = bounds;
        } 

        public Rectangle Bounds
        {
            get { return bounds; } 
            set { bounds = value; }
        } 
 
        public List HighlightedDesigners
        { 
            get { return highlightedDesigners; }
            set { highlightedDesigners = value; }
        }
 
        protected override void OnPaint(Graphics graphics, bool activated, AmbientTheme ambientTheme, ActivityDesigner designer)
        { 
            Rectangle frameRect = Bounds; 
            Rectangle shadowRect = frameRect;
 
            Color BaseColor = Color.FromArgb(150, 0, 0, 0); // dark semitransparent backdrop
            Color LightingColor = Color.FromArgb(150, 0, 0, 0);

            Brush frameBrush = new LinearGradientBrush(new Point(frameRect.Left, frameRect.Top), new Point(frameRect.Left, frameRect.Bottom), BaseColor, LightingColor); 

            shadowRect = DropRoundedRectangleShadow(shadowRect, graphics); 
            graphics.FillPath(frameBrush, RoundedRect(frameRect)); 
            graphics.SmoothingMode = SmoothingMode.HighQuality;
            graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias; 

            foreach (ActivityDesigner highlightedDesigner in HighlightedDesigners)
            {
                DesignerPainter.PaintDesigner(highlightedDesigner, new ActivityDesignerPaintEventArgs(graphics, designer.Bounds, designer.Bounds, null)); 
            }
        } 
 
        private Rectangle DropRoundedRectangleShadow(Rectangle shadowRect, Graphics outputGraphics)
        { 

            int shadowIntensity = 1;
            using (Pen shadowPen = new Pen(Color.FromArgb(shadowIntensity, 0, 0, 0)))
            { 
                shadowPen.Width = 24;
                for (int i = 0; i < 12; i++) 
                { 
                    outputGraphics.DrawPath(shadowPen, RoundedRect(shadowRect));
                    shadowPen.Color = Color.FromArgb(shadowIntensity - 1, 0, 0, 0); 
                    shadowIntensity += 2;
                    shadowPen.Width = shadowPen.Width - 2;;
                }
 
                return shadowRect;
            } 
        } 

 
        private GraphicsPath RoundedRect(Rectangle frame)
        {
            GraphicsPath path = new GraphicsPath();
            int radius = 1; 
            int diameter = radius * 2;
            Rectangle arc = new Rectangle(frame.Left, frame.Top, diameter, diameter); 
            path.AddArc(arc, 180, 90); 
            arc.X = frame.Right - diameter;
            path.AddArc(arc, 270, 90); 
            arc.Y = frame.Bottom - diameter;
            path.AddArc(arc, 0, 90);
            arc.X = frame.Left;
            path.AddArc(arc, 90, 90); 
            path.CloseFigure();
            return path; 
        } 
    }
 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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