SelectionBorderGlyph.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 / Designer / WinForms / System / WinForms / Design / Behavior / SelectionBorderGlyph.cs / 1 / SelectionBorderGlyph.cs

                            namespace System.Windows.Forms.Design.Behavior { 
    using System;
    using System.Collections;
    using System.ComponentModel;
    using System.ComponentModel.Design; 
    using System.Design;
    using System.Diagnostics; 
    using System.Drawing; 
    using System.Windows.Forms.Design;
 
    /// 
    /// 
    ///     The SelectionBorderGlyph draws one side (depending on type) of a SelectionBorder.
    ///  
    internal class SelectionBorderGlyph : SelectionGlyphBase {
 
        ///  
        /// 
        ///     This constructor extends from the standard SelectionGlyphBase constructor. 
        /// 
        internal SelectionBorderGlyph(Rectangle controlBounds, SelectionRules rules, SelectionBorderGlyphType type, Behavior behavior) : base(behavior) {
            InitializeGlyph(controlBounds, rules, type);
        } 

        ///  
        ///     Helper function that initializes the Glyph based on bounds, type, and bordersize. 
        /// 
        private void InitializeGlyph(Rectangle controlBounds, SelectionRules selRules, SelectionBorderGlyphType type) { 

            rules = SelectionRules.None;
            hitTestCursor = Cursors.Default;
 
            //this will return the rect representing the bounds of the glyph
            bounds = DesignerUtils.GetBoundsForSelectionType(controlBounds, type); 
            hitBounds = bounds; 

            // The hitbounds for the border is actually a bit bigger than the glyph bounds 

            switch (type) {
                case SelectionBorderGlyphType.Top:
                    if ((selRules & SelectionRules.TopSizeable) != 0) { 
                        hitTestCursor = Cursors.SizeNS;
                        rules = SelectionRules.TopSizeable; 
                    } 
                    // We want to apply the SELECTIONBORDERHITAREA to the top and the bottom of the selection border glyph
                    hitBounds.Y -= (DesignerUtils.SELECTIONBORDERHITAREA - DesignerUtils.SELECTIONBORDERSIZE) / 2; 
                    hitBounds.Height += DesignerUtils.SELECTIONBORDERHITAREA - DesignerUtils.SELECTIONBORDERSIZE;
                break;
                case SelectionBorderGlyphType.Bottom:
                    if ((selRules & SelectionRules.BottomSizeable) != 0) { 
                        hitTestCursor = Cursors.SizeNS;
                        rules = SelectionRules.BottomSizeable; 
                    } 
                    // We want to apply the SELECTIONBORDERHITAREA to the top and the bottom of the selection border glyph
                    hitBounds.Y -= (DesignerUtils.SELECTIONBORDERHITAREA - DesignerUtils.SELECTIONBORDERSIZE) / 2; 
                    hitBounds.Height += DesignerUtils.SELECTIONBORDERHITAREA - DesignerUtils.SELECTIONBORDERSIZE;
                break;
                case SelectionBorderGlyphType.Left:
                    if ((selRules & SelectionRules.LeftSizeable) != 0) { 
                        hitTestCursor = Cursors.SizeWE;
                        rules = SelectionRules.LeftSizeable; 
                    } 
                    // We want to apply the SELECTIONBORDERHITAREA to the left and the right of the selection border glyph
                    hitBounds.X -= (DesignerUtils.SELECTIONBORDERHITAREA - DesignerUtils.SELECTIONBORDERSIZE) / 2; 
                    hitBounds.Width += DesignerUtils.SELECTIONBORDERHITAREA - DesignerUtils.SELECTIONBORDERSIZE;
                break;
                case SelectionBorderGlyphType.Right:
                    if ((selRules & SelectionRules.RightSizeable) != 0) { 
                        hitTestCursor = Cursors.SizeWE;
                        rules = SelectionRules.RightSizeable; 
                    } 
                    // We want to apply the SELECTIONBORDERHITAREA to the left and the right of the selection border glyph
                    hitBounds.X -= (DesignerUtils.SELECTIONBORDERHITAREA - DesignerUtils.SELECTIONBORDERSIZE) / 2; 
                    hitBounds.Width += DesignerUtils.SELECTIONBORDERHITAREA - DesignerUtils.SELECTIONBORDERSIZE;
                break;
            }
 
        }
 
        ///  
        /// 
        ///     Simple painting logic for selection Glyphs. 
        /// 
        public override void Paint(PaintEventArgs pe) {
            DesignerUtils.DrawSelectionBorder(pe.Graphics, bounds);
        } 

    } 
} 

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

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