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//
// ToolStripDropDownButton.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.Runtime.InteropServices;
using System.Windows.Forms.Design;
using System.ComponentModel;
namespace System.Windows.Forms
{
[ToolStripItemDesignerAvailability (ToolStripItemDesignerAvailability.ToolStrip | ToolStripItemDesignerAvailability.StatusStrip)]
public class ToolStripDropDownButton : ToolStripDropDownItem
{
private bool show_drop_down_arrow = true;
#region Public Constructors
public ToolStripDropDownButton()
: this (string.Empty, null, null, string.Empty)
{
}
public ToolStripDropDownButton (Image image)
: this (string.Empty, image, null, string.Empty)
{
}
public ToolStripDropDownButton (string text)
: this (text, null, null, string.Empty)
{
}
public ToolStripDropDownButton (string text, Image image)
: this (text, image, null, string.Empty)
{
}
public ToolStripDropDownButton (string text, Image image, EventHandler onClick)
: this (text, image, onClick, string.Empty)
{
}
public ToolStripDropDownButton (string text, Image image, params ToolStripItem[] dropDownItems)
: base (text, image, dropDownItems)
{
}
public ToolStripDropDownButton (string text, Image image, EventHandler onClick, string name)
: base (text, image, onClick, name)
{
}
#endregion
#region Public Properties
[DefaultValue (true)]
public new bool AutoToolTip {
get { return base.AutoToolTip; }
set { base.AutoToolTip = value; }
}
[DefaultValue (true)]
public bool ShowDropDownArrow {
get { return this.show_drop_down_arrow; }
set {
if (this.show_drop_down_arrow != value) {
this.show_drop_down_arrow = value;
CalculateAutoSize ();
}
}
}
#endregion
#region Protected Properties
protected override bool DefaultAutoToolTip {
get { return true; }
}
#endregion
#region Protected Methods
protected override ToolStripDropDown CreateDefaultDropDown ()
{
ToolStripDropDownMenu tsdd = new ToolStripDropDownMenu ();
tsdd.OwnerItem = this;
return tsdd;
}
protected override void OnMouseDown (MouseEventArgs e)
{
if (e.Button == MouseButtons.Left) {
if (this.DropDown.Visible)
this.HideDropDown (ToolStripDropDownCloseReason.ItemClicked);
else
this.ShowDropDown ();
}
base.OnMouseDown (e);
}
protected override void OnMouseLeave (EventArgs e)
{
base.OnMouseLeave (e);
}
protected override void OnMouseUp (MouseEventArgs e)
{
base.OnMouseUp (e);
}
protected override void OnPaint (PaintEventArgs e)
{
base.OnPaint (e);
if (this.Owner != null) {
Color font_color = this.Enabled ? this.ForeColor : SystemColors.GrayText;
Image draw_image = this.Enabled ? this.Image : ToolStripRenderer.CreateDisabledImage (this.Image);
this.Owner.Renderer.DrawDropDownButtonBackground (new System.Windows.Forms.ToolStripItemRenderEventArgs (e.Graphics, this));
Rectangle text_layout_rect;
Rectangle image_layout_rect;
this.CalculateTextAndImageRectangles (out text_layout_rect, out image_layout_rect);
if (text_layout_rect != Rectangle.Empty)
this.Owner.Renderer.DrawItemText (new System.Windows.Forms.ToolStripItemTextRenderEventArgs (e.Graphics, this, this.Text, text_layout_rect, font_color, this.Font, this.TextAlign));
if (image_layout_rect != Rectangle.Empty)
this.Owner.Renderer.DrawItemImage (new System.Windows.Forms.ToolStripItemImageRenderEventArgs (e.Graphics, this, draw_image, image_layout_rect));
if (this.ShowDropDownArrow)
this.Owner.Renderer.DrawArrow (new ToolStripArrowRenderEventArgs (e.Graphics, this, new Rectangle (this.Width - 10, 0, 6, this.Height), Color.Black, ArrowDirection.Down));
return;
}
}
protected internal override bool ProcessMnemonic (char charCode)
{
if (!this.Selected)
this.Parent.ChangeSelection (this);
if (this.HasDropDownItems)
this.ShowDropDown ();
else
this.PerformClick ();
return true;
}
#endregion
#region Internal Methods
internal override Size CalculatePreferredSize (Size constrainingSize)
{
Size preferred_size = base.CalculatePreferredSize (constrainingSize);
if (this.ShowDropDownArrow)
preferred_size.Width += 9;
return preferred_size;
}
#endregion
}
}
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