CheckBoxStandardAdapter.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / ButtonInternal / CheckBoxStandardAdapter.cs / 1 / CheckBoxStandardAdapter.cs
                        

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

namespace System.Windows.Forms.ButtonInternal { 
    using System; 
    using System.Diagnostics;
    using System.Drawing; 
    using System.Drawing.Drawing2D;
    using System.Drawing.Imaging;
    using System.Drawing.Text;
    using System.Windows.Forms; 
    using System.Windows.Forms.Layout;
 
    internal sealed class CheckBoxStandardAdapter : CheckBoxBaseAdapter { 

        internal CheckBoxStandardAdapter(ButtonBase control) : base(control) {} 

        internal override void PaintUp(PaintEventArgs e, CheckState state)
        {
            if (Control.Appearance == Appearance.Button) { 
 				ButtonAdapter.PaintUp(e, Control.CheckState);
            } 
            else { 
                ColorData colors = PaintRender(e.Graphics).Calculate();
                LayoutData layout = Layout(e).Layout(); 
                PaintButtonBackground(e, Control.ClientRectangle, null);

                //minor adjustment to make sure the appearance is exactly the same as Win32 app.
                int focusRectFixup = layout.focus.X & 0x1; // if it's odd, subtract one pixel for fixup. 
                if (!Application.RenderWithVisualStyles) {
                    focusRectFixup = 1 - focusRectFixup; 
                } 

                if (!layout.options.everettButtonCompat) { 
                    layout.textBounds.Offset(-1, -1);
                }
                layout.imageBounds.Offset(-1, -1);
                layout.focus.Offset(-(focusRectFixup+1), -2); 
                layout.focus.Width = layout.textBounds.Width + layout.imageBounds.Width - 1;
                layout.focus.Intersect(layout.textBounds); 
 
                if( layout.options.textAlign != LayoutUtils.AnyLeft && layout.options.useCompatibleTextRendering && layout.options.font.Italic) {
                    // fixup for GDI+ text rendering.  VSW#515164 
                    layout.focus.Width += 2;
                }

                PaintImage(e, layout); 
                DrawCheckBox(e, layout);
                PaintField(e, layout, colors, colors.windowText, true); 
            } 
        }
 
        internal override void PaintDown(PaintEventArgs e, CheckState state) {
            if (Control.Appearance == Appearance.Button) {
				ButtonAdapter.PaintDown(e, Control.CheckState);
            } 
            else {
                PaintUp(e, state); 
            } 
        }
 
        internal override void PaintOver(PaintEventArgs e, CheckState state) {
            if (Control.Appearance == Appearance.Button) {
				ButtonAdapter.PaintOver(e, Control.CheckState);
            } 
            else {
                PaintUp(e, state); 
            } 
        }
 
        internal override Size GetPreferredSizeCore(Size proposedSize) {
            if (Control.Appearance == Appearance.Button) {
				ButtonStandardAdapter adapter = new ButtonStandardAdapter(Control);
                return adapter.GetPreferredSizeCore(proposedSize); 
            }
            else { 
                using (Graphics measurementGraphics = WindowsFormsUtils.CreateMeasurementGraphics()) { 
                    using (PaintEventArgs pe = new PaintEventArgs(measurementGraphics, new Rectangle())) {
                        LayoutOptions options = Layout(pe); 
                        return options.GetPreferredSizeCore(proposedSize);
                    }
                }
            } 
        }
 
        #region Layout 

        private new ButtonStandardAdapter ButtonAdapter { 
            get {
                return ((ButtonStandardAdapter)base.ButtonAdapter);
            }
        } 

        protected override ButtonBaseAdapter CreateButtonAdapter() { 
            return new ButtonStandardAdapter(Control); 
        }
 
        protected override LayoutOptions Layout(PaintEventArgs e) {
            LayoutOptions layout = CommonLayout();
            layout.checkPaddingSize  = 1;
            layout.everettButtonCompat = !Application.RenderWithVisualStyles; 

            // VSWhidbey 420870 
            if (Application.RenderWithVisualStyles) { 
                using (Graphics g =  WindowsFormsUtils.CreateMeasurementGraphics()) {
                    layout.checkSize = CheckBoxRenderer.GetGlyphSize(g, CheckBoxRenderer.ConvertFromButtonState(GetState(), true, Control.MouseIsOver)).Width; 
                }
            }

            return layout; 
        }
 
        #endregion 
    }
} 



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

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