mirror of https://github.com/dahall/Vanara.git
1295 lines
47 KiB
C#
1295 lines
47 KiB
C#
using System;
|
|
using System.ComponentModel;
|
|
using System.Drawing;
|
|
using System.Runtime.InteropServices;
|
|
using System.Security.Permissions;
|
|
using System.Windows.Forms;
|
|
using Vanara.Extensions;
|
|
using static Vanara.PInvoke.ComCtl32;
|
|
using static Vanara.PInvoke.Macros;
|
|
using static Vanara.PInvoke.User32;
|
|
using ComboBoxStyle = System.Windows.Forms.ComboBoxStyle;
|
|
|
|
namespace Vanara.Windows.Forms
|
|
{
|
|
internal interface IPopupControlHost
|
|
{
|
|
/// <summary>
|
|
/// Hides drop-down area of combo box, if shown.
|
|
/// </summary>
|
|
void HideDropDown();
|
|
|
|
/// <summary>
|
|
/// Displays drop-down area of combo box, if not already shown.
|
|
/// </summary>
|
|
void ShowDropDown();
|
|
}
|
|
|
|
/// <summary>
|
|
/// <c>CustomComboBox</c> is an extension of <see cref="ComboBox"/> which provides drop-down customization.
|
|
/// </summary>
|
|
public abstract class CustomComboBox : ComboBox, IPopupControlHost
|
|
{
|
|
private const int maxItemLen = 1024;
|
|
private static DateTime showTime = DateTime.Now;
|
|
|
|
/// <summary>Actual drop-down control itself.</summary>
|
|
private Control dropDownCtrl;
|
|
|
|
/// <summary>Indicates if drop-down is currently shown.</summary>
|
|
private bool droppedDown;
|
|
/// <summary>Time drop-down was last hidden.</summary>
|
|
private DateTime lastHideTime = DateTime.Now;
|
|
|
|
/// <summary>Popup control.</summary>
|
|
private PopupControl popupCtrl = new PopupControl();
|
|
|
|
/// <summary>Original size of combo box drop-down when first assigned.</summary>
|
|
private Size sizeCombo;
|
|
|
|
/// <summary>Indicates current sizing mode.</summary>
|
|
private SizeMode sizeMode = SizeMode.UseComboSize;
|
|
|
|
/// <summary>Original size of control dimensions when first assigned.</summary>
|
|
private Size sizeOriginal = new Size(1, 1);
|
|
|
|
/// <summary>Automatic focus timer helps make sure drop-down control is focused for user input upon drop-down.</summary>
|
|
private Timer timerAutoFocus;
|
|
|
|
private ToolTip toolTip;
|
|
|
|
/// <summary>
|
|
/// Initializes a new instance of the <see cref="CustomComboBox"/> class.
|
|
/// </summary>
|
|
public CustomComboBox()
|
|
{
|
|
base.DropDownStyle = ComboBoxStyle.DropDownList;
|
|
base.Items.Add(String.Empty);
|
|
sizeCombo = new Size(base.DropDownWidth, base.DropDownHeight);
|
|
popupCtrl.Closing += DropDownClosing;
|
|
toolTip = new ToolTip { StripAmpersands = true };
|
|
}
|
|
|
|
/// <summary>
|
|
/// Initializes a new instance of the <see cref="CustomComboBox"/> class.
|
|
/// </summary>
|
|
/// <param name="dropControl">The control to display in the drop-down.</param>
|
|
public CustomComboBox(Control dropControl) : this()
|
|
{
|
|
DropDownControl = dropControl;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Occurs when the drop-down portion of a <see cref="CustomComboBox"/> is shown.
|
|
/// </summary>
|
|
[Category("Action")]
|
|
public new event EventHandler DropDown;
|
|
|
|
/// <summary>
|
|
/// Occurs when the drop-down portion of the <see cref="CustomComboBox"/> is no longer visible.
|
|
/// </summary>
|
|
[Category("Action")]
|
|
public new event EventHandler DropDownClosed;
|
|
|
|
/// <summary>
|
|
/// Sizing mode for the CustomComboBox drop-down area.
|
|
/// </summary>
|
|
public enum SizeMode
|
|
{
|
|
/// <summary>
|
|
/// Uses the width of the parent.
|
|
/// </summary>
|
|
UseComboSize,
|
|
|
|
/// <summary>
|
|
/// Uses the width of the supplied control for the drop-down.
|
|
/// </summary>
|
|
UseControlSize,
|
|
|
|
/// <summary>
|
|
/// Uses the width of the combo box drop-down box.
|
|
/// </summary>
|
|
UseDropDownSize
|
|
}
|
|
|
|
internal enum GripAlignMode
|
|
{
|
|
TopLeft,
|
|
TopRight,
|
|
BottomLeft,
|
|
BottomRight
|
|
}
|
|
|
|
internal enum PopupResizeMode
|
|
{
|
|
None = 0,
|
|
|
|
// Individual styles.
|
|
Left = 1,
|
|
|
|
Top = 2,
|
|
Right = 4,
|
|
Bottom = 8,
|
|
|
|
// Combined styles.
|
|
All = (Top | Left | Bottom | Right),
|
|
|
|
TopLeft = (Top | Left),
|
|
TopRight = (Top | Right),
|
|
BottomLeft = (Bottom | Left),
|
|
BottomRight = (Bottom | Right)
|
|
}
|
|
|
|
/// <summary>
|
|
/// Indicates if drop-down is re-sizable.
|
|
/// </summary>
|
|
[Category("Custom Drop-Down"), Description("Indicates if drop-down is re-sizable."), DefaultValue(true)]
|
|
public bool AllowResizeDropDown { get; set; } = true;
|
|
|
|
/// <summary>
|
|
/// Gets or sets the size of the drop-down control itself.
|
|
/// </summary>
|
|
/// <value>The size of the drop-down control.</value>
|
|
[Category("Custom Drop-Down"), Browsable(false)]
|
|
public Size ControlSize
|
|
{
|
|
get => sizeOriginal; set
|
|
{
|
|
sizeOriginal = value;
|
|
if (DropDownSizeMode == SizeMode.UseControlSize)
|
|
AutoSizeDropDown();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets or sets the property to display for this <see cref="T:System.Windows.Forms.ListControl"/>.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>
|
|
/// A <see cref="T:System.String"/> specifying the name of an object property that is contained in the collection specified by the <see cref="P:System.Windows.Forms.ListControl.DataSource"/> property. The default is an empty string ("").
|
|
/// </returns>
|
|
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
|
[Browsable(false), ReadOnly(true)]
|
|
public new string DisplayMember { get => base.DisplayMember; set { } }
|
|
|
|
/// <summary>
|
|
/// Gets or sets drop-down control itself.
|
|
/// </summary>
|
|
/// <value>The drop down control.</value>
|
|
[Browsable(false)]
|
|
public Control DropDownControl { get => dropDownCtrl; set => AssignControl(value); }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the height in pixels of the drop-down portion of the <see cref="T:System.Windows.Forms.ComboBox"/>.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>
|
|
/// The height, in pixels, of the drop-down box.
|
|
/// </returns>
|
|
/// <exception cref="T:System.ArgumentException">
|
|
/// The specified value is less than one.
|
|
/// </exception>
|
|
/// <PermissionSet>
|
|
/// <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence"/>
|
|
/// <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// </PermissionSet>
|
|
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
|
[Browsable(false), ReadOnly(true)]
|
|
public new int DropDownHeight { get => base.DropDownHeight; set { } }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the sizing mode for the drop-down.
|
|
/// </summary>
|
|
/// <value>The drop down size mode.</value>
|
|
[Category("Custom Drop-Down"), Description("Indicates current sizing mode."), DefaultValue(SizeMode.UseComboSize)]
|
|
public SizeMode DropDownSizeMode
|
|
{
|
|
get => sizeMode; set
|
|
{
|
|
if (value != sizeMode)
|
|
{
|
|
sizeMode = value;
|
|
AutoSizeDropDown();
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets or sets a value specifying the style of the combo box.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>
|
|
/// One of the <see cref="T:System.Windows.Forms.ComboBoxStyle"/> values. The default is DropDown.
|
|
/// </returns>
|
|
/// <exception cref="T:System.ComponentModel.InvalidEnumArgumentException">
|
|
/// The assigned value is not one of the <see cref="T:System.Windows.Forms.ComboBoxStyle"/> values.
|
|
/// </exception>
|
|
/// <PermissionSet>
|
|
/// <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence"/>
|
|
/// <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// </PermissionSet>
|
|
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
|
[Browsable(false), ReadOnly(true)]
|
|
public new ComboBoxStyle DropDownStyle { get => base.DropDownStyle; set { } }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the width of the of the drop-down portion of a combo box.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>
|
|
/// The width, in pixels, of the drop-down box.
|
|
/// </returns>
|
|
/// <exception cref="T:System.ArgumentException">
|
|
/// The specified value is less than one.
|
|
/// </exception>
|
|
/// <PermissionSet>
|
|
/// <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence"/>
|
|
/// <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// </PermissionSet>
|
|
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
|
[Browsable(false), ReadOnly(true)]
|
|
public new int DropDownWidth { get => base.DropDownWidth; set { } }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the size of the drop-down area.
|
|
/// </summary>
|
|
/// <value>The size of the drop-down area.</value>
|
|
[Category("Custom Drop-Down")]
|
|
public Size DropSize
|
|
{
|
|
get => sizeCombo; set
|
|
{
|
|
sizeCombo = value;
|
|
if (DropDownSizeMode == SizeMode.UseDropDownSize)
|
|
AutoSizeDropDown();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets or sets a value indicating whether the control should resize to avoid showing partial items.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>true if the list portion can contain only complete items; otherwise, false. The default is true.
|
|
/// </returns>
|
|
/// <PermissionSet>
|
|
/// <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence"/>
|
|
/// <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// </PermissionSet>
|
|
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
|
[Browsable(false), ReadOnly(true)]
|
|
public new bool IntegralHeight { get => base.IntegralHeight; set { } }
|
|
|
|
/// <summary>
|
|
/// Indicates if drop-down is currently shown.
|
|
/// </summary>
|
|
/// <value>
|
|
/// <c>true</c> if this instance is dropped down; otherwise, <c>false</c>.
|
|
/// </value>
|
|
[Browsable(false)]
|
|
public bool IsDroppedDown => droppedDown /*&& m_popupCtrl.Visible*/;
|
|
|
|
/// <summary>
|
|
/// Gets or sets the height of an item in the combo box.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>
|
|
/// The height, in pixels, of an item in the combo box.
|
|
/// </returns>
|
|
/// <exception cref="T:System.ArgumentException">
|
|
/// The item height value is less than zero.
|
|
/// </exception>
|
|
/// <PermissionSet>
|
|
/// <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence"/>
|
|
/// <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// </PermissionSet>
|
|
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
|
[Browsable(false), ReadOnly(true)]
|
|
public new int ItemHeight { get => base.ItemHeight; set { } }
|
|
|
|
/// <summary>
|
|
/// Gets an object representing the collection of the items contained in this <see cref="T:System.Windows.Forms.ComboBox"/>.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>
|
|
/// A <see cref="T:System.Windows.Forms.ComboBox.ObjectCollection"/> representing the items in the <see cref="T:System.Windows.Forms.ComboBox"/>.
|
|
/// </returns>
|
|
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
|
[Browsable(false), ReadOnly(true)]
|
|
public new ObjectCollection Items => base.Items;
|
|
|
|
/// <summary>
|
|
/// Gets or sets the maximum number of items to be shown in the drop-down portion of the <see cref="T:System.Windows.Forms.ComboBox"/>.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>
|
|
/// The maximum number of items of in the drop-down portion. The minimum for this property is 1 and the maximum is 100.
|
|
/// </returns>
|
|
/// <exception cref="T:System.ArgumentException">
|
|
/// The maximum number is set less than one or greater than 100.
|
|
/// </exception>
|
|
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
|
[Browsable(false), ReadOnly(true)]
|
|
public new int MaxDropDownItems { get => base.MaxDropDownItems; set { } }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the index specifying the currently selected item.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>
|
|
/// A zero-based index of the currently selected item. A value of negative one (-1) is returned if no item is selected.
|
|
/// </returns>
|
|
/// <exception cref="T:System.ArgumentOutOfRangeException">
|
|
/// The specified index is less than or equal to -2.
|
|
/// -or-
|
|
/// The specified index is greater than or equal to the number of items in the combo box.
|
|
/// </exception>
|
|
/// <PermissionSet>
|
|
/// <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence"/>
|
|
/// <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// </PermissionSet>
|
|
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
|
[Browsable(false), ReadOnly(true)]
|
|
public new int SelectedIndex { get => base.SelectedIndex; set { } }
|
|
|
|
/// <summary>
|
|
/// Gets or sets currently selected item in the <see cref="T:System.Windows.Forms.ComboBox"/>.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>
|
|
/// The object that is the currently selected item or null if there is no currently selected item.
|
|
/// </returns>
|
|
/// <PermissionSet>
|
|
/// <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence"/>
|
|
/// <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// </PermissionSet>
|
|
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
|
[Browsable(false), ReadOnly(true)]
|
|
public new object SelectedItem { get => base.SelectedItem; set { } }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the text that is selected in the editable portion of a <see cref="T:System.Windows.Forms.ComboBox"/>.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>
|
|
/// A string that represents the currently selected text in the combo box. If <see cref="P:System.Windows.Forms.ComboBox.DropDownStyle"/> is set to <see cref="F:System.Windows.Forms.ComboBoxStyle.DropDownList"/>, the return value is an empty string ("").
|
|
/// </returns>
|
|
/// <PermissionSet>
|
|
/// <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence"/>
|
|
/// <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// </PermissionSet>
|
|
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
|
[Browsable(false), ReadOnly(true)]
|
|
public new string SelectedText { get => base.SelectedText; set { } }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the value of the member property specified by the <see cref="P:System.Windows.Forms.ListControl.ValueMember"/> property.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>
|
|
/// An object containing the value of the member of the data source specified by the <see cref="P:System.Windows.Forms.ListControl.ValueMember"/> property.
|
|
/// </returns>
|
|
/// <exception cref="T:System.InvalidOperationException">
|
|
/// The assigned value is null or the empty string ("").
|
|
/// </exception>
|
|
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
|
[Browsable(false), ReadOnly(true)]
|
|
public new object SelectedValue { get => base.SelectedValue; set { } }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the number of characters selected in the editable portion of the combo box.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>
|
|
/// The number of characters selected in the combo box.
|
|
/// </returns>
|
|
/// <exception cref="T:System.ArgumentException">
|
|
/// The value was less than zero.
|
|
/// </exception>
|
|
/// <PermissionSet>
|
|
/// <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence"/>
|
|
/// <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// </PermissionSet>
|
|
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
|
[Browsable(false), ReadOnly(true)]
|
|
public new int SelectionLength { get => base.SelectionLength; set { } }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the starting index of text selected in the combo box.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>
|
|
/// The zero-based index of the first character in the string of the current text selection.
|
|
/// </returns>
|
|
/// <exception cref="T:System.ArgumentException">
|
|
/// The value is less than zero.
|
|
/// </exception>
|
|
/// <PermissionSet>
|
|
/// <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence"/>
|
|
/// <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// </PermissionSet>
|
|
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
|
[Browsable(false), ReadOnly(true)]
|
|
public new int SelectionStart { get => base.SelectionStart; set { } }
|
|
|
|
/// <summary>
|
|
/// Gets or sets a value indicating whether the items in the combo box are sorted.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>true if the combo box is sorted; otherwise, false. The default is false.
|
|
/// </returns>
|
|
/// <exception cref="T:System.ArgumentException">
|
|
/// An attempt was made to sort a <see cref="T:System.Windows.Forms.ComboBox"/> that is attached to a data source.
|
|
/// </exception>
|
|
/// <PermissionSet>
|
|
/// <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence"/>
|
|
/// <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// </PermissionSet>
|
|
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
|
[Browsable(false), ReadOnly(true)]
|
|
public new bool Sorted { get => base.Sorted; set { } }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the text associated with this control.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>
|
|
/// The text associated with this control.
|
|
/// </returns>
|
|
/// <PermissionSet>
|
|
/// <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence"/>
|
|
/// <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/>
|
|
/// </PermissionSet>
|
|
public new string Text
|
|
{
|
|
get => base.Items.Count == 0 ? string.Empty : base.Items[0].ToString(); set
|
|
{
|
|
// Get toolTip value
|
|
var items = value.Split(new[] { ", " }, StringSplitOptions.RemoveEmptyEntries);
|
|
if (items.Length > 0)
|
|
toolTip.SetToolTip(this, string.Join("\r\n", items));
|
|
// Limit length and then set 0 item to value so it displays
|
|
if (value.Length > maxItemLen)
|
|
value = value.Substring(0, maxItemLen);
|
|
if (base.Items.Count == 0)
|
|
base.Items.Add(value);
|
|
else if (!Equals(value, base.Items[0]))
|
|
base.Items[0] = value;
|
|
base.SelectedIndex = 0;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets or sets the property to use as the actual value for the items in the <see cref="T:System.Windows.Forms.ListControl"/>.
|
|
/// </summary>
|
|
/// <value></value>
|
|
/// <returns>
|
|
/// A <see cref="T:System.String"/> representing the name of an object property that is contained in the collection specified by the <see cref="P:System.Windows.Forms.ListControl.DataSource"/> property. The default is an empty string ("").
|
|
/// </returns>
|
|
/// <exception cref="T:System.ArgumentException">
|
|
/// The specified property cannot be found on the object specified by the <see cref="P:System.Windows.Forms.ListControl.DataSource"/> property.
|
|
/// </exception>
|
|
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
|
|
[Browsable(false), ReadOnly(true)]
|
|
public new string ValueMember { get => base.ValueMember; set { } }
|
|
|
|
/// <summary>
|
|
/// Gets or sets a value indicating whether to prevent hiding the popup window.
|
|
/// </summary>
|
|
/// <value><c>true</c> if hiding is prevented; otherwise, <c>false</c>.</value>
|
|
protected bool PreventPopupHide { get; set; }
|
|
|
|
/// <summary>
|
|
/// Hides drop-down area of combo box, if shown.
|
|
/// </summary>
|
|
public virtual void HideDropDown()
|
|
{
|
|
if (popupCtrl != null && IsDroppedDown && !PreventPopupHide)
|
|
{
|
|
// Hide drop-down control.
|
|
popupCtrl.Hide();
|
|
droppedDown = false;
|
|
|
|
// Disable automatic focus timer.
|
|
if (timerAutoFocus != null && timerAutoFocus.Enabled)
|
|
timerAutoFocus.Enabled = false;
|
|
|
|
Focus();
|
|
|
|
// Raise drop-down closed event.
|
|
OnDropDownClosed(EventArgs.Empty);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Preprocesses keyboard or input messages within the message loop before they are dispatched.
|
|
/// </summary>
|
|
/// <param name="m">A <see cref="Message"/>, passed by reference, that represents the message to process. The possible values are WM_KEYDOWN, WM_SYSKEYDOWN, WM_CHAR, and WM_SYSCHAR.</param>
|
|
/// <returns><c>true</c> if the message was processed by the control; otherwise, <c>false</c>.</returns>
|
|
public override bool PreProcessMessage(ref Message m)
|
|
{
|
|
if (m.Msg == (int)WindowMessage.WM_REFLECT + (int)WindowMessage.WM_COMMAND)
|
|
{
|
|
if (HIWORD(m.WParam) == (int)ComboBoxNotification.CBN_DROPDOWN)
|
|
return false;
|
|
}
|
|
return base.PreProcessMessage(ref m);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Displays drop-down area of combo box, if not already shown.
|
|
/// </summary>
|
|
public virtual void ShowDropDown()
|
|
{
|
|
if (popupCtrl != null && !IsDroppedDown)
|
|
{
|
|
// Raise drop-down event.
|
|
OnDropDown(EventArgs.Empty);
|
|
|
|
// Restore original control size.
|
|
AutoSizeDropDown();
|
|
|
|
var location = PointToScreen(new Point(0, Height));
|
|
|
|
// Actually show popup.
|
|
var resizeMode = (AllowResizeDropDown ? PopupResizeMode.BottomRight : PopupResizeMode.None);
|
|
popupCtrl.Show(DropDownControl, location.X, location.Y, Width, Height, resizeMode);
|
|
droppedDown = true;
|
|
|
|
popupCtrl.PopupControlHost = this;
|
|
|
|
// Initialize automatic focus timer?
|
|
if (timerAutoFocus == null)
|
|
{
|
|
timerAutoFocus = new Timer {Interval = 10};
|
|
timerAutoFocus.Tick += timerAutoFocus_Tick;
|
|
}
|
|
// Enable the timer!
|
|
timerAutoFocus.Enabled = true;
|
|
showTime = DateTime.Now;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Assigns control to custom drop-down area of combo box.
|
|
/// </summary>
|
|
/// <param name="control">Control to be used as drop-down. Please note that this control must not be contained elsewhere.</param>
|
|
protected virtual void AssignControl(Control control)
|
|
{
|
|
// If specified control is different then...
|
|
if (control != dropDownCtrl)
|
|
{
|
|
if (dropDownCtrl != null)
|
|
Controls.Remove(dropDownCtrl);
|
|
|
|
// Reference the user-specified drop down control.
|
|
dropDownCtrl = control;
|
|
|
|
// Preserve original container size.
|
|
sizeOriginal = dropDownCtrl?.Size ?? new Size(1, 1);
|
|
|
|
if (dropDownCtrl != null)
|
|
Controls.Add(control);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Automatically resize drop-down from properties.
|
|
/// </summary>
|
|
protected void AutoSizeDropDown()
|
|
{
|
|
if (DropDownControl != null)
|
|
{
|
|
switch (DropDownSizeMode)
|
|
{
|
|
case SizeMode.UseComboSize:
|
|
DropDownControl.Size = new Size(Width, sizeCombo.Height);
|
|
break;
|
|
|
|
case SizeMode.UseControlSize:
|
|
DropDownControl.Size = new Size(sizeOriginal.Width, sizeOriginal.Height);
|
|
break;
|
|
|
|
case SizeMode.UseDropDownSize:
|
|
DropDownControl.Size = sizeCombo;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Releases the unmanaged resources used by the <see cref="T:System.Windows.Forms.ComboBox"/> and optionally releases the managed resources.
|
|
/// </summary>
|
|
/// <param name="disposing">true to release both managed and unmanaged resources; false to release only unmanaged resources.</param>
|
|
protected override void Dispose(bool disposing)
|
|
{
|
|
if (disposing)
|
|
{
|
|
if (timerAutoFocus != null)
|
|
{
|
|
timerAutoFocus.Dispose();
|
|
timerAutoFocus = null;
|
|
}
|
|
}
|
|
base.Dispose(disposing);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Raises the <see cref="DropDown"/> event.
|
|
/// </summary>
|
|
/// <param name="args">The <see cref="System.EventArgs"/> instance containing the event data.</param>
|
|
protected new virtual void OnDropDown(EventArgs args)
|
|
{
|
|
DropDown?.Invoke(this, args);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Raises the <see cref="DropDownClosed"/> event.
|
|
/// </summary>
|
|
/// <param name="args">The <see cref="System.EventArgs"/> instance containing the event data.</param>
|
|
protected new virtual void OnDropDownClosed(EventArgs args)
|
|
{
|
|
DropDownClosed?.Invoke(this, args);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Raises the <see cref="E:FontChanged"/> event.
|
|
/// </summary>
|
|
/// <param name="e">An <see cref="T:System.EventArgs" /> that contains the event data.</param>
|
|
protected override void OnFontChanged(EventArgs e)
|
|
{
|
|
base.OnFontChanged(e);
|
|
if (DropDownControl != null)
|
|
DropDownControl.Font = Font;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Processes Windows messages.
|
|
/// </summary>
|
|
/// <param name="m">The Windows <see cref="T:System.Windows.Forms.Message"/> to process.</param>
|
|
protected override void WndProc(ref Message m)
|
|
{
|
|
if (m.Msg == (int)WindowMessage.WM_LBUTTONDOWN && DropDownControl != null)
|
|
{
|
|
AutoDropDown();
|
|
return;
|
|
}
|
|
|
|
if (m.Msg == (int)WindowMessage.WM_REFLECT + (int)WindowMessage.WM_COMMAND && DropDownControl != null)
|
|
{
|
|
switch (HIWORD(m.WParam))
|
|
{
|
|
case (int)ComboBoxNotification.CBN_DROPDOWN:
|
|
AutoDropDown();
|
|
return;
|
|
|
|
case (int)ComboBoxNotification.CBN_CLOSEUP:
|
|
if ((DateTime.Now - showTime).Seconds > 1)
|
|
HideDropDown();
|
|
return;
|
|
}
|
|
}
|
|
|
|
base.WndProc(ref m);
|
|
}
|
|
|
|
private void AutoDropDown()
|
|
{
|
|
if (popupCtrl != null && popupCtrl.Visible)
|
|
HideDropDown();
|
|
else if ((DateTime.Now - lastHideTime).Milliseconds > 50)
|
|
ShowDropDown();
|
|
}
|
|
|
|
private void DropDownClosing(object sender, ToolStripDropDownClosingEventArgs e)
|
|
{
|
|
lastHideTime = DateTime.Now;
|
|
}
|
|
|
|
private void m_dropDown_LostFocus(object sender, EventArgs e)
|
|
{
|
|
lastHideTime = DateTime.Now;
|
|
}
|
|
|
|
private void timerAutoFocus_Tick(object sender, EventArgs e)
|
|
{
|
|
if (popupCtrl != null && popupCtrl.Visible && !DropDownControl.Focused)
|
|
{
|
|
DropDownControl.Focus();
|
|
timerAutoFocus.Enabled = false;
|
|
}
|
|
|
|
if (DroppedDown)
|
|
DroppedDown = false;
|
|
}
|
|
|
|
internal static class GripRenderer
|
|
{
|
|
private static Bitmap gripBitmap;
|
|
|
|
private static Bitmap GripBitmap => gripBitmap;
|
|
|
|
public static void RefreshSystemColors(Graphics g, Size size)
|
|
{
|
|
InitializeGripBitmap(g, size, true);
|
|
}
|
|
|
|
public static void Render(Graphics g, Point location, Size size, GripAlignMode mode)
|
|
{
|
|
InitializeGripBitmap(g, size, false);
|
|
|
|
// Calculate display size and position of grip.
|
|
switch (mode)
|
|
{
|
|
case GripAlignMode.TopLeft:
|
|
size.Height = -size.Height;
|
|
size.Width = -size.Width;
|
|
break;
|
|
|
|
case GripAlignMode.TopRight:
|
|
size.Height = -size.Height;
|
|
break;
|
|
|
|
case GripAlignMode.BottomLeft:
|
|
size.Width = -size.Height;
|
|
break;
|
|
}
|
|
|
|
// Reverse size grip for left-aligned.
|
|
if (size.Width < 0)
|
|
location.X -= size.Width;
|
|
if (size.Height < 0)
|
|
location.Y -= size.Height;
|
|
|
|
g.DrawImage(GripBitmap, location.X, location.Y, size.Width, size.Height);
|
|
}
|
|
|
|
public static void Render(Graphics g, Point location, GripAlignMode mode)
|
|
{
|
|
Render(g, location, new Size(16, 16), mode);
|
|
}
|
|
|
|
private static void InitializeGripBitmap(Graphics g, Size size, bool forceRefresh)
|
|
{
|
|
if (gripBitmap == null || forceRefresh || size != gripBitmap.Size)
|
|
{
|
|
// Draw size grip into a bitmap image.
|
|
gripBitmap = new Bitmap(size.Width, size.Height, g);
|
|
using (var gripG = Graphics.FromImage(gripBitmap))
|
|
ControlPaint.DrawSizeGrip(gripG, SystemColors.ButtonFace, 0, 0, size.Width, size.Height);
|
|
}
|
|
}
|
|
}
|
|
|
|
internal class PopupControl
|
|
{
|
|
private PopupDropDown dropDown;
|
|
private ToolStripControlHost host;
|
|
|
|
public PopupControl()
|
|
{
|
|
InitializeDropDown();
|
|
}
|
|
|
|
public event ToolStripDropDownClosingEventHandler Closing { add { dropDown.Closing += value; } remove { dropDown.Closing -= value; } }
|
|
|
|
public bool AutoResetWhenClosed { get; set; } = false;
|
|
|
|
public Control Control => host?.Control;
|
|
|
|
public Padding Margin { get; set; } = new Padding(1);
|
|
|
|
public Padding Padding { get; set; } = Padding.Empty;
|
|
|
|
/// <summary>
|
|
/// Gets or sets the popup control host, this is used to hide/show popup.
|
|
/// </summary>
|
|
public IPopupControlHost PopupControlHost { get; set; }
|
|
|
|
public bool Visible => (dropDown != null && dropDown.Visible) ? true : false;
|
|
|
|
public void Hide()
|
|
{
|
|
if (dropDown != null && dropDown.Visible)
|
|
{
|
|
dropDown.Hide();
|
|
DisposeHost();
|
|
}
|
|
}
|
|
|
|
public void Reset()
|
|
{
|
|
DisposeHost();
|
|
}
|
|
|
|
public void Show(Control control, int x, int y, PopupResizeMode resizeMode = PopupResizeMode.None)
|
|
{
|
|
Show(control, x, y, -1, -1, resizeMode);
|
|
}
|
|
|
|
public void Show(Control control, int x, int y, int width, int height, PopupResizeMode resizeMode)
|
|
{
|
|
var controlSize = control.Size;
|
|
|
|
InitializeHost(control);
|
|
|
|
dropDown.ResizeMode = resizeMode;
|
|
dropDown.Show(x, y, width, height);
|
|
|
|
control.Focus();
|
|
}
|
|
|
|
protected void DisposeHost()
|
|
{
|
|
if (host != null)
|
|
{
|
|
// Make sure host is removed from drop down.
|
|
dropDown?.Items.Clear();
|
|
|
|
// Dispose of host.
|
|
host = null;
|
|
}
|
|
|
|
PopupControlHost = null;
|
|
}
|
|
|
|
protected void InitializeDropDown()
|
|
{
|
|
// Does a drop down exist?
|
|
if (dropDown == null)
|
|
{
|
|
dropDown = new PopupDropDown(false);
|
|
dropDown.Closed += DropDownClosed;
|
|
}
|
|
}
|
|
|
|
protected void InitializeHost(Control control)
|
|
{
|
|
InitializeDropDown();
|
|
|
|
// If control is not yet being hosted then initialize host.
|
|
if (control != Control)
|
|
DisposeHost();
|
|
|
|
// Create a new host?
|
|
if (host == null)
|
|
{
|
|
host = new ToolStripControlHost(control)
|
|
{
|
|
AutoSize = false,
|
|
Padding = Padding,
|
|
Margin = Margin
|
|
};
|
|
}
|
|
|
|
// Add control to drop-down.
|
|
dropDown.Items.Clear();
|
|
dropDown.Padding = dropDown.Margin = Padding.Empty;
|
|
dropDown.Items.Add(host);
|
|
}
|
|
|
|
private void DropDownClosed(object sender, ToolStripDropDownClosedEventArgs e)
|
|
{
|
|
if (AutoResetWhenClosed)
|
|
DisposeHost();
|
|
|
|
// Hide drop down within popup control.
|
|
PopupControlHost?.HideDropDown();
|
|
}
|
|
}
|
|
|
|
internal class PopupDropDown : ToolStripDropDown
|
|
{
|
|
private bool lockedHostedControlSize;
|
|
private bool lockedThisSize;
|
|
private bool refreshSize;
|
|
private PopupResizeMode resizeMode = PopupResizeMode.None;
|
|
|
|
public PopupDropDown(bool autoSize)
|
|
{
|
|
AutoSize = autoSize;
|
|
Padding = Margin = Padding.Empty;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Type of resize mode, grips are automatically drawn at bottom-left and bottom-right corners.
|
|
/// </summary>
|
|
public PopupResizeMode ResizeMode
|
|
{
|
|
get => resizeMode; set
|
|
{
|
|
if (value != resizeMode)
|
|
{
|
|
resizeMode = value;
|
|
Invalidate();
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Bounds of active grip box position.
|
|
/// </summary>
|
|
protected Rectangle GripBounds { get; set; } = Rectangle.Empty;
|
|
|
|
/// <summary>
|
|
/// Indicates when a grip box is shown.
|
|
/// </summary>
|
|
protected bool IsGripShown => (ResizeMode == PopupResizeMode.TopLeft || ResizeMode == PopupResizeMode.TopRight ||
|
|
ResizeMode == PopupResizeMode.BottomLeft || ResizeMode == PopupResizeMode.BottomRight);
|
|
|
|
public bool CompareResizeMode(PopupResizeMode resizeMode) => (ResizeMode & resizeMode) == resizeMode;
|
|
|
|
public Control GetHostedControl()
|
|
{
|
|
if (Items.Count > 0)
|
|
{
|
|
var host = Items[0] as ToolStripControlHost;
|
|
if (host != null)
|
|
return host.Control;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Processes the resizing messages.
|
|
/// </summary>
|
|
/// <param name="m">The message.</param>
|
|
/// <returns>true, if the WndProc method from the base class shouldn't be invoked.</returns>
|
|
public bool ProcessGrip(ref Message m) => ProcessGrip(ref m, true);
|
|
|
|
public void Show(int x, int y, int width = -1, int height = -1)
|
|
{
|
|
// If no hosted control is associated, this procedure is pointless!
|
|
var hostedControl = GetHostedControl();
|
|
if (hostedControl == null)
|
|
return;
|
|
|
|
// Initially hosted control should be displayed within a drop down of 1x1, however
|
|
// its size should exceed the dimensions of the drop-down.
|
|
{
|
|
lockedHostedControlSize = true;
|
|
lockedThisSize = true;
|
|
|
|
// Display actual popup and occupy just 1x1 pixel to avoid automatic reposition.
|
|
Size = new Size(1, 1);
|
|
base.Show(x, y);
|
|
|
|
lockedHostedControlSize = false;
|
|
lockedThisSize = false;
|
|
}
|
|
|
|
// Resize drop-down to fit its contents.
|
|
ResizeFromContent(width);
|
|
|
|
// If client area was enlarged using the minimum width parameter, then the hosted
|
|
// control must also be enlarged.
|
|
if (refreshSize)
|
|
RecalculateHostedControlLayout();
|
|
|
|
// If popup is overlapping the initial position then move above!
|
|
if (y > Top && y <= Bottom)
|
|
{
|
|
Top = y - Height - (height != -1 ? height : 0);
|
|
|
|
var previous = ResizeMode;
|
|
if (ResizeMode == PopupResizeMode.BottomLeft)
|
|
ResizeMode = PopupResizeMode.TopLeft;
|
|
else if (ResizeMode == PopupResizeMode.BottomRight)
|
|
ResizeMode = PopupResizeMode.TopRight;
|
|
|
|
if (ResizeMode != previous)
|
|
RecalculateHostedControlLayout();
|
|
}
|
|
|
|
// Assign event handler to control.
|
|
hostedControl.SizeChanged += hostedControl_SizeChanged;
|
|
}
|
|
|
|
protected static int HIWORD(int n) => (n >> 16) & 0xffff;
|
|
|
|
protected static int HIWORD(IntPtr n) => HIWORD(unchecked((int)(long)n));
|
|
|
|
protected static int LOWORD(int n) => n & 0xffff;
|
|
|
|
protected static int LOWORD(IntPtr n) => LOWORD(unchecked((int)(long)n));
|
|
|
|
protected void hostedControl_SizeChanged(object sender, EventArgs e)
|
|
{
|
|
// Only update size of this container when it is not locked.
|
|
if (!lockedHostedControlSize)
|
|
ResizeFromContent(-1);
|
|
}
|
|
|
|
protected override void OnClosing(ToolStripDropDownClosingEventArgs e)
|
|
{
|
|
var hostedControl = GetHostedControl();
|
|
if (hostedControl != null)
|
|
hostedControl.SizeChanged -= hostedControl_SizeChanged;
|
|
base.OnClosing(e);
|
|
}
|
|
|
|
protected override void OnPaint(PaintEventArgs e)
|
|
{
|
|
base.OnPaint(e);
|
|
|
|
GripBounds = Rectangle.Empty;
|
|
|
|
if (CompareResizeMode(PopupResizeMode.BottomLeft))
|
|
{
|
|
// Draw grip area at bottom-left of popup.
|
|
e.Graphics.FillRectangle(SystemBrushes.ButtonFace, 1, Height - 16, Width - 2, 14);
|
|
GripBounds = new Rectangle(1, Height - 16, 16, 16);
|
|
GripRenderer.Render(e.Graphics, GripBounds.Location, GripAlignMode.BottomLeft);
|
|
}
|
|
else if (CompareResizeMode(PopupResizeMode.BottomRight))
|
|
{
|
|
// Draw grip area at bottom-right of popup.
|
|
e.Graphics.FillRectangle(SystemBrushes.ButtonFace, 1, Height - 16, Width - 2, 14);
|
|
GripBounds = new Rectangle(Width - 17, Height - 16, 16, 16);
|
|
GripRenderer.Render(e.Graphics, GripBounds.Location, GripAlignMode.BottomRight);
|
|
}
|
|
else if (CompareResizeMode(PopupResizeMode.TopLeft))
|
|
{
|
|
// Draw grip area at top-left of popup.
|
|
e.Graphics.FillRectangle(SystemBrushes.ButtonFace, 1, 1, Width - 2, 14);
|
|
GripBounds = new Rectangle(1, 0, 16, 16);
|
|
GripRenderer.Render(e.Graphics, GripBounds.Location, GripAlignMode.TopLeft);
|
|
}
|
|
else if (CompareResizeMode(PopupResizeMode.TopRight))
|
|
{
|
|
// Draw grip area at top-right of popup.
|
|
e.Graphics.FillRectangle(SystemBrushes.ButtonFace, 1, 1, Width - 2, 14);
|
|
GripBounds = new Rectangle(Width - 17, 0, 16, 16);
|
|
GripRenderer.Render(e.Graphics, GripBounds.Location, GripAlignMode.TopRight);
|
|
}
|
|
}
|
|
|
|
protected override void OnSizeChanged(EventArgs e)
|
|
{
|
|
base.OnSizeChanged(e);
|
|
|
|
// When drop-down window is being resized by the user (i.e. not locked),
|
|
// update size of hosted control.
|
|
if (!lockedThisSize)
|
|
RecalculateHostedControlLayout();
|
|
}
|
|
|
|
protected void RecalculateHostedControlLayout()
|
|
{
|
|
if (lockedHostedControlSize)
|
|
return;
|
|
|
|
lockedThisSize = true;
|
|
|
|
// Update size of hosted control.
|
|
var hostedControl = GetHostedControl();
|
|
if (hostedControl != null)
|
|
{
|
|
// Fetch control bounds and adjust as necessary.
|
|
var bounds = hostedControl.Bounds;
|
|
if (CompareResizeMode(PopupResizeMode.TopLeft) || CompareResizeMode(PopupResizeMode.TopRight))
|
|
bounds.Location = new Point(1, 16);
|
|
else
|
|
bounds.Location = new Point(1, 1);
|
|
|
|
bounds.Width = ClientRectangle.Width - 2;
|
|
bounds.Height = ClientRectangle.Height - 2;
|
|
if (IsGripShown)
|
|
bounds.Height -= 16;
|
|
|
|
if (bounds.Size != hostedControl.Size)
|
|
hostedControl.Size = bounds.Size;
|
|
if (bounds.Location != hostedControl.Location)
|
|
hostedControl.Location = bounds.Location;
|
|
}
|
|
|
|
lockedThisSize = false;
|
|
}
|
|
|
|
protected void ResizeFromContent(int width)
|
|
{
|
|
if (lockedThisSize)
|
|
return;
|
|
|
|
// Prevent resizing hosted control to 1x1 pixel!
|
|
lockedHostedControlSize = true;
|
|
|
|
// Resize from content again because certain information was not available before.
|
|
var bounds = Bounds;
|
|
bounds.Size = SizeFromContent(width);
|
|
|
|
if (!CompareResizeMode(PopupResizeMode.None))
|
|
{
|
|
if (width > 0 && bounds.Width - 2 > width)
|
|
if (!CompareResizeMode(PopupResizeMode.Right))
|
|
bounds.X -= bounds.Width - 2 - width;
|
|
}
|
|
|
|
Bounds = bounds;
|
|
|
|
lockedHostedControlSize = false;
|
|
}
|
|
|
|
protected Size SizeFromContent(int width)
|
|
{
|
|
var contentSize = Size.Empty;
|
|
|
|
refreshSize = false;
|
|
|
|
// Fetch hosted control.
|
|
var hostedControl = GetHostedControl();
|
|
if (hostedControl != null)
|
|
{
|
|
if (CompareResizeMode(PopupResizeMode.TopLeft) || CompareResizeMode(PopupResizeMode.TopRight))
|
|
hostedControl.Location = new Point(1, 16);
|
|
else
|
|
hostedControl.Location = new Point(1, 1);
|
|
contentSize = SizeFromClientSize(hostedControl.Size);
|
|
|
|
// Use minimum width (if specified).
|
|
if (width > 0 && contentSize.Width < width)
|
|
{
|
|
contentSize.Width = width;
|
|
refreshSize = true;
|
|
}
|
|
}
|
|
|
|
// If a grip box is shown then add it into the drop down height.
|
|
if (IsGripShown)
|
|
contentSize.Height += 16;
|
|
|
|
// Add some additional space to allow for borders.
|
|
contentSize.Width += 2;
|
|
contentSize.Height += 2;
|
|
|
|
return contentSize;
|
|
}
|
|
|
|
protected override void WndProc(ref Message m)
|
|
{
|
|
if (!ProcessGrip(ref m, false))
|
|
base.WndProc(ref m);
|
|
}
|
|
|
|
private bool OnGetMinMaxInfo(ref Message m)
|
|
{
|
|
var hostedControl = GetHostedControl();
|
|
if (hostedControl != null)
|
|
{
|
|
var minmax = m.LParam.ToStructure<MINMAXINFO>();
|
|
|
|
// Maximum size.
|
|
if (hostedControl.MaximumSize.Width != 0)
|
|
minmax.maxTrackSize.Width = hostedControl.MaximumSize.Width;
|
|
if (hostedControl.MaximumSize.Height != 0)
|
|
minmax.maxTrackSize.Height = hostedControl.MaximumSize.Height;
|
|
|
|
// Minimum size.
|
|
minmax.minTrackSize = new Size(32, 32);
|
|
if (hostedControl.MinimumSize.Width > minmax.minTrackSize.Width)
|
|
minmax.minTrackSize.Width = hostedControl.MinimumSize.Width;
|
|
if (hostedControl.MinimumSize.Height > minmax.minTrackSize.Height)
|
|
minmax.minTrackSize.Height = hostedControl.MinimumSize.Height;
|
|
|
|
Marshal.StructureToPtr(minmax, m.LParam, false);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
private bool OnNcHitTest(ref Message m, bool contentControl)
|
|
{
|
|
var location = PointToClient(new Point(LOWORD(m.LParam), HIWORD(m.LParam)));
|
|
var transparent = (IntPtr)HitTestValues.HTTRANSPARENT;
|
|
|
|
// Check for simple gripper dragging.
|
|
if (GripBounds.Contains(location))
|
|
{
|
|
if (CompareResizeMode(PopupResizeMode.BottomLeft))
|
|
{
|
|
m.Result = contentControl ? transparent : (IntPtr)HitTestValues.HTBOTTOMLEFT;
|
|
return true;
|
|
}
|
|
if (CompareResizeMode(PopupResizeMode.BottomRight))
|
|
{
|
|
m.Result = contentControl ? transparent : (IntPtr)HitTestValues.HTBOTTOMRIGHT;
|
|
return true;
|
|
}
|
|
if (CompareResizeMode(PopupResizeMode.TopLeft))
|
|
{
|
|
m.Result = contentControl ? transparent : (IntPtr)HitTestValues.HTTOPLEFT;
|
|
return true;
|
|
}
|
|
if (CompareResizeMode(PopupResizeMode.TopRight))
|
|
{
|
|
m.Result = contentControl ? transparent : (IntPtr)HitTestValues.HTTOPRIGHT;
|
|
return true;
|
|
}
|
|
}
|
|
else // Check for edge based dragging.
|
|
{
|
|
var rectClient = ClientRectangle;
|
|
if (location.X > rectClient.Right - 3 && location.X <= rectClient.Right && CompareResizeMode(PopupResizeMode.Right))
|
|
{
|
|
m.Result = contentControl ? transparent : (IntPtr)HitTestValues.HTRIGHT;
|
|
return true;
|
|
}
|
|
if (location.Y > rectClient.Bottom - 3 && location.Y <= rectClient.Bottom && CompareResizeMode(PopupResizeMode.Bottom))
|
|
{
|
|
m.Result = contentControl ? transparent : (IntPtr)HitTestValues.HTBOTTOM;
|
|
return true;
|
|
}
|
|
if (location.X > -1 && location.X < 3 && CompareResizeMode(PopupResizeMode.Left))
|
|
{
|
|
m.Result = contentControl ? transparent : (IntPtr)HitTestValues.HTLEFT;
|
|
return true;
|
|
}
|
|
if (location.Y > -1 && location.Y < 3 && CompareResizeMode(PopupResizeMode.Top))
|
|
{
|
|
m.Result = contentControl ? transparent : (IntPtr)HitTestValues.HTTOP;
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private bool ProcessGrip(ref Message m, bool contentControl)
|
|
{
|
|
if (ResizeMode != PopupResizeMode.None)
|
|
{
|
|
switch (m.Msg)
|
|
{
|
|
case (int)WindowMessage.WM_NCHITTEST:
|
|
return OnNcHitTest(ref m, contentControl);
|
|
|
|
case (int)WindowMessage.WM_GETMINMAXINFO:
|
|
return OnGetMinMaxInfo(ref m);
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
} |