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//
// ToolStripDropDownMenu.cs
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2006 Jonathan Pobst
//
// Authors:
// Jonathan Pobst (monkey@jpobst.com)
//
using System.Drawing;
using System.ComponentModel;
using System.Runtime.InteropServices;
using System.Windows.Forms.Layout;
namespace System.Windows.Forms
{
[ComVisible (true)]
[ClassInterface (ClassInterfaceType.AutoDispatch)]
[Designer ("System.Windows.Forms.Design.ToolStripDropDownDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
public class ToolStripDropDownMenu : ToolStripDropDown
{
private ToolStripLayoutStyle layout_style;
private bool show_check_margin;
private bool show_image_margin;
#region Public Constructors
public ToolStripDropDownMenu () : base ()
{
this.layout_style = ToolStripLayoutStyle.Flow;
this.show_image_margin = true;
}
#endregion
#region Public Properties
public override Rectangle DisplayRectangle {
get { return base.DisplayRectangle; }
}
public override LayoutEngine LayoutEngine {
get { return base.LayoutEngine; }
}
[DefaultValue (ToolStripLayoutStyle.Flow)]
public new ToolStripLayoutStyle LayoutStyle {
get { return this.layout_style; }
set { this.layout_style = value; }
}
[DefaultValue (false)]
public bool ShowCheckMargin {
get { return this.show_check_margin; }
set {
if (this.show_check_margin != value) {
this.show_check_margin = value;
PerformLayout (this, "ShowCheckMargin");
}
}
}
[DefaultValue (true)]
public bool ShowImageMargin {
get { return this.show_image_margin; }
set {
if (this.show_image_margin != value) {
this.show_image_margin = value;
PerformLayout (this, "ShowImageMargin");
}
}
}
#endregion
#region Protected Properties
protected override Padding DefaultPadding {
get { return base.DefaultPadding; }
}
protected internal override Size MaxItemSize {
get { return Size; }
}
#endregion
#region Protected Methods
protected internal override ToolStripItem CreateDefaultItem (string text, Image image, EventHandler onClick)
{
return base.CreateDefaultItem (text, image, onClick);
}
protected override void OnFontChanged (EventArgs e)
{
base.OnFontChanged (e);
}
protected override void OnLayout (LayoutEventArgs e)
{
// Find the widest menu item
int widest = 0;
foreach (ToolStripItem tsi in this.Items) {
if (!tsi.Available)
continue;
tsi.SetPlacement (ToolStripItemPlacement.Main);
widest = Math.Max (widest, tsi.GetPreferredSize (Size.Empty).Width);
}
int x = this.Padding.Left;
if (show_check_margin || show_image_margin)
widest += 68 - this.Padding.Horizontal;
else
widest += 47 - this.Padding.Horizontal;
int y = this.Padding.Top;
foreach (ToolStripItem tsi in this.Items) {
if (!tsi.Available)
continue;
y += tsi.Margin.Top;
int height = 0;
Size preferred_size = tsi.GetPreferredSize (Size.Empty);
if (preferred_size.Height > 22)
height = preferred_size.Height;
else if (tsi is ToolStripSeparator)
height = 7;
else
height = 22;
tsi.SetBounds (new Rectangle (x, y, widest, height));
y += height + tsi.Margin.Bottom;
}
this.Size = new Size (widest + this.Padding.Horizontal, y + this.Padding.Bottom);// + 2);
this.SetDisplayedItems ();
this.OnLayoutCompleted (EventArgs.Empty);
this.Invalidate ();
}
protected override void OnPaintBackground (PaintEventArgs e)
{
Rectangle affected_bounds = new Rectangle (Point.Empty, this.Size);
ToolStripRenderEventArgs tsrea = new ToolStripRenderEventArgs (e.Graphics, this, affected_bounds, SystemColors.Control);
tsrea.InternalConnectedArea = CalculateConnectedArea ();
this.Renderer.DrawToolStripBackground (tsrea);
if (this.ShowCheckMargin || this.ShowImageMargin) {
tsrea = new ToolStripRenderEventArgs (e.Graphics, this, new Rectangle (tsrea.AffectedBounds.Location, new Size (25, tsrea.AffectedBounds.Height)), SystemColors.Control);
this.Renderer.DrawImageMargin (tsrea);
}
}
protected override void SetDisplayedItems ()
{
base.SetDisplayedItems ();
}
#endregion
#region Internal Methods
internal override Rectangle CalculateConnectedArea ()
{
if (this.OwnerItem != null && !this.OwnerItem.IsOnDropDown && !(this.OwnerItem is MdiControlStrip.SystemMenuItem)) {
Point owner_screen_loc = OwnerItem.GetCurrentParent ().PointToScreen (OwnerItem.Location);
return new Rectangle (owner_screen_loc.X - Left, 0, this.OwnerItem.Width - 1, 2);
}
return base.CalculateConnectedArea ();
}
#endregion
}
}
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