ToolStripRenderEventArgs.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / ToolStripRenderEventArgs.cs / 1 / ToolStripRenderEventArgs.cs
                        

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

namespace System.Windows.Forms { 
 
    using System.Drawing;
 

    /// 
    /// 
    ///   ToolStripRenderEventArgs 
    /// 
    public class ToolStripRenderEventArgs : EventArgs { 
 
        private ToolStrip      toolStrip         = null;
        private Graphics    graphics       = null; 
        private Rectangle   affectedBounds = Rectangle.Empty;
        private Color       backColor      = Color.Empty;

        ///  
        /// 
        ///  This class represents all the information to render the toolStrip 
        ///  
        public ToolStripRenderEventArgs(Graphics g, ToolStrip toolStrip) {
            this.toolStrip = toolStrip; 
            this.graphics = g;
            this.affectedBounds = new Rectangle(Point.Empty, toolStrip.Size);

 
        }
 
        ///  
        /// 
        ///  This class represents all the information to render the toolStrip 
        /// 
        public ToolStripRenderEventArgs(Graphics g, ToolStrip toolStrip, Rectangle affectedBounds, Color backColor) {
            this.toolStrip = toolStrip;
            this.affectedBounds = affectedBounds; 
            this.graphics = g;
            this.backColor = backColor; 
        } 

        ///  
        /// 
        ///  the bounds to draw in
        /// 
        public Rectangle AffectedBounds { 
            get {
                return affectedBounds; 
            } 
        }
 
        /// 
        /// 
        ///  the back color to draw with.
        ///  
        public Color BackColor {
            get { 
                if (backColor == Color.Empty) { 
                    // get the user specified color
                    backColor = toolStrip.RawBackColor; 
                    if (backColor == Color.Empty) {
                        if (toolStrip is ToolStripDropDown) {
                            backColor = SystemColors.Menu;
                        } 
                        else if (toolStrip is MenuStrip) {
                            backColor = SystemColors.MenuBar; 
                        } 
                        else {
                            backColor = SystemColors.Control; 
                        }
                    }
                }
                return backColor; 
            }
        } 
        ///  
        /// 
        ///  the graphics object to draw with 
        /// 
        public Graphics Graphics {
            get {
                return graphics; 
            }
        } 
 
        /// 
        ///  
        ///  Represents which toolStrip was affected by the click
        /// 
        public ToolStrip ToolStrip {
            get { 
                return toolStrip;
            } 
        } 

        ///  
        public Rectangle ConnectedArea {
            get {
                ToolStripDropDown dropDown = toolStrip as ToolStripDropDown;
                if (dropDown != null) { 
                    ToolStripDropDownItem ownerItem = dropDown.OwnerItem as ToolStripDropDownItem;
 
                    if (ownerItem is MdiControlStrip.SystemMenuItem) { 
                        // there's no connected rect between a system menu item and a dropdown.
                        return Rectangle.Empty; 
                    }
                    if (ownerItem !=null && ownerItem.ParentInternal != null && !ownerItem.IsOnDropDown) {
                           // translate the item into our coordinate system.
                           Rectangle itemBounds = new Rectangle(toolStrip.PointToClient(ownerItem.TranslatePoint(Point.Empty, ToolStripPointType.ToolStripItemCoords, ToolStripPointType.ScreenCoords)), ownerItem.Size); 
                           Rectangle bounds = ToolStrip.Bounds;
 
                           Rectangle overlap = ToolStrip.ClientRectangle; 
                           overlap.Inflate(1,1);
                           if (overlap.IntersectsWith(itemBounds)) { 
                               switch (ownerItem.DropDownDirection) {
                                   case ToolStripDropDownDirection.AboveLeft:
                                   case ToolStripDropDownDirection.AboveRight:
                                      // Consider... the shadow effect interferes with the connected area. 
                                      return Rectangle.Empty;
                                      // return new Rectangle(itemBounds.X+1, bounds.Height -2, itemBounds.Width -2, 2); 
                                   case ToolStripDropDownDirection.BelowRight: 
                                   case ToolStripDropDownDirection.BelowLeft:
                                       overlap.Intersect(itemBounds); 
                                       if (overlap.Height == 2) {
                                            return new Rectangle(itemBounds.X+1, 0, itemBounds.Width -2, 2);
                                       }
                                       // if its overlapping more than one pixel, this means we've pushed it to obscure 
                                       // the menu item.  in this case pretend it's not connected.
                                       return Rectangle.Empty; 
                                   case ToolStripDropDownDirection.Right: 
                                   case ToolStripDropDownDirection.Left:
                                       return Rectangle.Empty; 
                                       // Consider... the shadow effect interferes with the connected area.
                                      // return new Rectangle(bounds.Width-2, 1, 2, itemBounds.Height-2);
                               }
                           } 
                     }
                } 
                return Rectangle.Empty; 
            }
        } 


    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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