mcs/class/Managed.Windows.Forms/System.Windows.Forms/ToolStripDropDownButton.cs

   1 //
   2 // ToolStripDropDownButton.cs
   3 //
   4 // Permission is hereby granted, free of charge, to any person obtaining
   5 // a copy of this software and associated documentation files (the
   6 // "Software"), to deal in the Software without restriction, including
   7 // without limitation the rights to use, copy, modify, merge, publish,
   8 // distribute, sublicense, and/or sell copies of the Software, and to
   9 // permit persons to whom the Software is furnished to do so, subject to
  10 // the following conditions:
  11 //
  12 // The above copyright notice and this permission notice shall be
  13 // included in all copies or substantial portions of the Software.
  14 //
  15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  19 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  20 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  21 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22 //
  23 // Copyright (c) 2006 Jonathan Pobst
  24 //
  25 // Authors:
  26 //      Jonathan Pobst (monkey@jpobst.com)
  27 //
  28
  29 #if NET_2_0
  30 using System.Drawing;
  31 using System.Runtime.InteropServices;
  32
  33 namespace System.Windows.Forms
  34 {
  35         public class ToolStripDropDownButton : ToolStripDropDownItem
  36         {
  37                 private bool show_drop_down_arrow = true;
  38
  39                 #region Public Constructors
  40                 public ToolStripDropDownButton()
  41                         : this (string.Empty, null, null, string.Empty)
  42                 {
  43                 }
  44
  45                 public ToolStripDropDownButton (Image image)
  46                         : this (string.Empty, image, null, string.Empty)
  47                 {
  48                 }
  49
  50                 public ToolStripDropDownButton (string text)
  51                         : this (text, null, null, string.Empty)
  52                 {
  53                 }
  54
  55                 public ToolStripDropDownButton (string text, Image image)
  56                         : this (text, image, null, string.Empty)
  57                 {
  58                 }
  59
  60                 public ToolStripDropDownButton (string text, Image image, EventHandler onClick)
  61                         : this (text, image, onClick, string.Empty)
  62                 {
  63                 }
  64
  65                 public ToolStripDropDownButton (string text, Image image, params ToolStripItem[] dropDownItems)
  66                         : base (text, image, dropDownItems)
  67                 {
  68                 }
  69
  70                 public ToolStripDropDownButton (string text, Image image, EventHandler onClick, string name)
  71                         : base (text, image, onClick, name)
  72                 {
  73                 }
  74                 #endregion
  75
  76                 #region Public Properties
  77                 public new bool AutoToolTip {
  78                         get { return base.AutoToolTip; }
  79                         set { base.AutoToolTip = value; }
  80                 }
  81
  82                 public bool ShowDropDownArrow {
  83                         get { return this.show_drop_down_arrow; }
  84                         set { this.show_drop_down_arrow = value; }
  85                 }
  86                 #endregion
  87
  88                 #region Protected Properties
  89                 protected override bool DefaultAutoToolTip {
  90                         get { return true; }
  91                 }
  92                 #endregion
  93
  94                 #region Protected Methods
  95                 protected override ToolStripDropDown CreateDefaultDropDown ()
  96                 {
  97                         return base.CreateDefaultDropDown ();
  98                 }
  99
 100                 protected override void OnMouseDown (MouseEventArgs e)
 101                 {
 102                         if (this.DropDown.Visible)
 103                                 this.HideDropDown (ToolStripDropDownCloseReason.ItemClicked);
 104                         else
 105                                 this.ShowDropDown ();
 106
 107                         base.OnMouseDown (e);
 108                 }
 109                 protected override void OnPaint (PaintEventArgs e)
 110                 {
 111                         base.OnPaint (e);
 112
 113                         if (this.Owner != null) {
 114                                 Color font_color = this.Enabled ? this.ForeColor : SystemColors.GrayText;
 115                                 Image draw_image = this.Enabled ? this.Image : ToolStripRenderer.CreateDisabledImage (this.Image);
 116
 117                                 this.Owner.Renderer.DrawDropDownButtonBackground (new System.Windows.Forms.ToolStripItemRenderEventArgs (e.Graphics, this));
 118
 119                                 Rectangle text_layout_rect;
 120                                 Rectangle image_layout_rect;
 121
 122                                 this.CalculateTextAndImageRectangles (out text_layout_rect, out image_layout_rect);
 123
 124                                 if (text_layout_rect != Rectangle.Empty)
 125                                         this.Owner.Renderer.DrawItemText (new System.Windows.Forms.ToolStripItemTextRenderEventArgs (e.Graphics, this, this.Text, text_layout_rect, font_color, this.Font, this.TextAlign));
 126                                 if (image_layout_rect != Rectangle.Empty)
 127                                         this.Owner.Renderer.DrawItemImage (new System.Windows.Forms.ToolStripItemImageRenderEventArgs (e.Graphics, this, draw_image, image_layout_rect));
 128                                 if (this.ShowDropDownArrow)
 129                                         this.Owner.Renderer.DrawArrow (new ToolStripArrowRenderEventArgs (e.Graphics, this, new Rectangle (this.Width - 10, 0, 6, this.Height), Color.Black, ArrowDirection.Down));
 130                                 return;
 131                         }
 132                 }
 133                 #endregion
 134         }
 135 }
 136 #endif