398 lines
9.9 KiB
C#
398 lines
9.9 KiB
C#
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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// Copyright (c) 2004 Novell, Inc. (http://www.novell.com)
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//
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// Author:
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// Ravindra (rkumar@novell.com)
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//
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// COMPLETE
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using System.ComponentModel;
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using System.Drawing;
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namespace System.Windows.Forms
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{
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[DefaultProperty ("Text")]
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[DesignTimeVisible (false)]
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[ToolboxItem (false)]
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[TypeConverter (typeof (ColumnHeaderConverter))]
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public class ColumnHeader : Component, ICloneable
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{
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#region Instance Variables
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private StringFormat format = new StringFormat ();
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private string text = "ColumnHeader";
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private HorizontalAlignment text_alignment = HorizontalAlignment.Left;
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private int width = ThemeEngine.Current.ListViewDefaultColumnWidth;
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private int image_index = -1;
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private string image_key = String.Empty;
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private string name = String.Empty;
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private object tag;
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private int display_index = -1;
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// internal variables
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Rectangle column_rect = Rectangle.Empty;
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bool pressed = false;
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ListView owner;
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#endregion // Instance Variables
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#region Internal Constructor
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internal ColumnHeader (ListView owner, string text,
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HorizontalAlignment alignment, int width)
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{
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this.owner = owner;
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this.text = text;
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this.width = width;
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this.text_alignment = alignment;
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CalcColumnHeader ();
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}
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internal ColumnHeader (string key, string text, int width, HorizontalAlignment textAlign)
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{
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Name = key;
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Text = text;
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this.width = width;
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this.text_alignment = textAlign;
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CalcColumnHeader ();
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}
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#endregion // Internal Constructor
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#region Public Constructors
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public ColumnHeader () { }
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public ColumnHeader (int imageIndex)
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{
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ImageIndex = imageIndex;
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}
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public ColumnHeader (string imageKey)
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{
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ImageKey = imageKey;
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}
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#endregion // Public Constructors
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#region Private Internal Methods Properties
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internal bool Pressed {
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get { return pressed; }
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set { pressed = value; }
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}
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internal int X {
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get { return column_rect.X; }
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set { column_rect.X = value; }
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}
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internal int Y {
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get { return column_rect.Y; }
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set { column_rect.Y = value; }
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}
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internal int Wd {
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get { return column_rect.Width; }
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set { column_rect.Width = value; }
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}
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internal int Ht {
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get { return column_rect.Height; }
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set { column_rect.Height = value; }
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}
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internal Rectangle Rect {
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get { return column_rect; }
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set { column_rect = value; }
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}
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internal StringFormat Format {
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get { return format; }
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}
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internal int InternalDisplayIndex {
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get { return display_index; }
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set { display_index = value; }
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}
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internal void CalcColumnHeader ()
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{
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if (text_alignment == HorizontalAlignment.Center)
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format.Alignment = StringAlignment.Center;
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else if (text_alignment == HorizontalAlignment.Right)
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format.Alignment = StringAlignment.Far;
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else
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format.Alignment = StringAlignment.Near;
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format.LineAlignment = StringAlignment.Center;
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format.Trimming = StringTrimming.EllipsisCharacter;
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// text is wrappable only in LargeIcon and SmallIcon views
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format.FormatFlags = StringFormatFlags.NoWrap;
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if (owner != null)
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column_rect.Height = ThemeEngine.Current.ListViewGetHeaderHeight (owner, owner.Font);
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else
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column_rect.Height = ThemeEngine.Current.ListViewGetHeaderHeight (null, ThemeEngine.Current.DefaultFont);
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column_rect.Width = 0;
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if (width >= 0) // manual width
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column_rect.Width = width;
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else if (Index != -1) { // automatic width, either -1 or -2
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// try to expand if we are the last column
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bool expand_to_right = Index == owner.Columns.Count - 1 && width == -2;
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Rectangle visible_area = owner.ClientRectangle;
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column_rect.Width = owner.GetChildColumnSize (Index).Width;
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width = column_rect.Width;
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// expand only if we have free space to the right
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if (expand_to_right && column_rect.X + column_rect.Width < visible_area.Width) {
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width = visible_area.Width - column_rect.X;
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if (owner.v_scroll.Visible)
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width -= owner.v_scroll.Width;
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column_rect.Width = width;
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}
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}
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}
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internal void SetListView (ListView list_view)
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{
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owner = list_view;
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}
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#endregion // Private Internal Methods Properties
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#region Public Instance Properties
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[Localizable (true)]
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[RefreshProperties (RefreshProperties.Repaint)]
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public int DisplayIndex {
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get {
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if (owner == null)
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return display_index;
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return owner.GetReorderedColumnIndex (this);
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}
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set {
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if (owner == null) {
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display_index = value;
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return;
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}
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if (value < 0 || value >= owner.Columns.Count)
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throw new ArgumentOutOfRangeException ("DisplayIndex");
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owner.ReorderColumn (this, value, false);
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}
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}
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[DefaultValue (-1)]
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[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
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[Editor ("System.Windows.Forms.Design.ImageIndexEditor, " + Consts.AssemblySystem_Design,
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"System.Drawing.Design.UITypeEditor, " + Consts.AssemblySystem_Drawing)]
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[RefreshProperties (RefreshProperties.Repaint)]
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[TypeConverter (typeof (ImageIndexConverter))]
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public int ImageIndex {
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get {
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return image_index;
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}
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set {
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if (value < -1)
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throw new ArgumentOutOfRangeException ("ImageIndex");
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image_index = value;
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image_key = String.Empty;
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if (owner != null)
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owner.header_control.Invalidate ();
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}
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}
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[DefaultValue ("")]
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[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
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[Editor ("System.Windows.Forms.Design.ImageIndexEditor, " + Consts.AssemblySystem_Design,
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"System.Drawing.Design.UITypeEditor, " + Consts.AssemblySystem_Drawing)]
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[RefreshProperties (RefreshProperties.Repaint)]
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[TypeConverter (typeof (ImageKeyConverter))]
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public string ImageKey {
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get {
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return image_key;
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}
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set {
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image_key = value == null ? String.Empty : value;
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image_index = -1;
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if (owner != null)
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owner.header_control.Invalidate ();
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}
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}
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[Browsable (false)]
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public ImageList ImageList {
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get {
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if (owner == null)
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return null;
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return owner.SmallImageList;
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}
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}
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[Browsable (false)]
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public int Index {
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get {
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if (owner != null)
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return owner.Columns.IndexOf (this);
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return -1;
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}
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}
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[Browsable (false)]
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public ListView ListView {
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get { return owner; }
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}
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[Browsable (false)]
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public string Name {
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get {
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return name;
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}
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set {
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name = value == null ? String.Empty : value;
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}
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}
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[DefaultValue (null)]
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[BindableAttribute (true)]
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[LocalizableAttribute (false)]
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[TypeConverter (typeof (StringConverter))]
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public object Tag {
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get {
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return tag;
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}
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set {
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tag = value;
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}
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}
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[Localizable (true)]
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public string Text {
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get { return text; }
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set {
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if (text != value) {
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text = value;
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if (owner != null)
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owner.Redraw (true);
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// UIA Framework: Raising Value changed event
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OnUIATextChanged ();
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}
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}
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}
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[DefaultValue (HorizontalAlignment.Left)]
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[Localizable (true)]
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public HorizontalAlignment TextAlign {
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get { return text_alignment; }
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set {
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text_alignment = value;
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if (owner != null)
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owner.Redraw (true);
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}
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}
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[DefaultValue (60)]
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[Localizable (true)]
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public int Width {
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get { return width; }
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set {
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if (width != value) {
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width = value;
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if (owner != null) {
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owner.Redraw (true);
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owner.RaiseColumnWidthChanged (this);
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}
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}
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}
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}
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#endregion // Public Instance Properties
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#region Public Methods
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public void AutoResize (ColumnHeaderAutoResizeStyle headerAutoResize)
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{
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switch (headerAutoResize) {
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case ColumnHeaderAutoResizeStyle.None:
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break;
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case ColumnHeaderAutoResizeStyle.ColumnContent:
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Width = -1;
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break;
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case ColumnHeaderAutoResizeStyle.HeaderSize:
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Width = -2;
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break;
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default:
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throw new InvalidEnumArgumentException ("headerAutoResize", (int) headerAutoResize,
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typeof (ColumnHeaderAutoResizeStyle));
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}
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}
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public object Clone ()
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{
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ColumnHeader columnHeader = new ColumnHeader ();
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columnHeader.text = text;
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columnHeader.text_alignment = text_alignment;
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columnHeader.width = width;
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columnHeader.owner = owner;
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columnHeader.format = (StringFormat) Format.Clone ();
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columnHeader.column_rect = Rectangle.Empty;
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return columnHeader;
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}
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public override string ToString ()
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{
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return string.Format ("ColumnHeader: Text: {0}", text);
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}
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#endregion // Public Methods
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#region Protected Methods
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protected override void Dispose (bool disposing)
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{
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base.Dispose (disposing);
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}
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#endregion // Protected Methods
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#region UIA Framework: Methods, Properties and Events
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static object UIATextChangedEvent = new object ();
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internal event EventHandler UIATextChanged {
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add { Events.AddHandler (UIATextChangedEvent, value); }
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remove { Events.RemoveHandler (UIATextChangedEvent, value); }
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}
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private void OnUIATextChanged ()
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{
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EventHandler eh = (EventHandler) Events [UIATextChangedEvent];
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if (eh != null)
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eh (this, EventArgs.Empty);
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}
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#endregion
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}
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}
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