LSLEditor/trunk/Editor/GListBoxWindow.cs

// /**
// ********
// *
// * ORIGIONAL CODE BASE IS Copyright (C) 2006-2010 by Alphons van der Heijden
// * The code was donated on 4/28/2010 by Alphons van der Heijden
// * To Brandon'Dimentox Travanti' Husbands & Malcolm J. Kudra which in turn Liscense under the GPLv2.
// * In agreement to Alphons van der Heijden wishes.
// *
// * The community would like to thank Alphons for all of his hard work, blood sweat and tears.
// * Without his work the community would be stuck with crappy editors.
// *
// * The source code in this file ("Source Code") is provided by The LSLEditor Group
// * to you under the terms of the GNU General Public License, version 2.0
// * ("GPL"), unless you have obtained a separate licensing agreement
// * ("Other License"), formally executed by you and The LSLEditor Group.  Terms of
// * the GPL can be found in the gplv2.txt document.
// *
// ********
// * GPLv2 Header
// ********
// * LSLEditor, a External editor for the LSL Language.
// * Copyright (C) 2010 The LSLEditor Group.
// 
// * This program is free software; you can redistribute it and/or
// * modify it under the terms of the GNU General Public License
// * as published by the Free Software Foundation; either version 2
// * of the License, or (at your option) any later version.
// *
// * This program is distributed in the hope that it will be useful,
// * but WITHOUT ANY WARRANTY; without even the implied warranty of
// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// * GNU General Public License for more details.
// *
// * You should have received a copy of the GNU General Public License
// * along with this program; if not, write to the Free Software
// * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
// ********
// *
// * The above copyright notice and this permission notice shall be included in all 
// * copies or substantial portions of the Software.
// *
// ********
// */
using System;
using System.Drawing;
using System.ComponentModel;
using System.Windows.Forms;

namespace LSLEditor
{
	public partial class GListBoxWindow : Form
	{
		public GListBox GListBox
		{
			get
			{
				return this.gListBox1;
			}
		}

		public GListBoxItem Selected
		{
			get
			{
				return (GListBoxItem)this.gListBox1.Items[this.gListBox1.SelectedIndex];
			}
		}

		public GListBoxWindow(Form parent)
		{
			InitializeComponent();

			this.Owner = parent;

			this.GListBox.Cursor = Cursors.Arrow;
			this.GListBox.Sorted = true;

			this.FontChanged += new EventHandler(GListBoxWindow_FontChanged);
		}

		void GListBoxWindow_FontChanged(object sender, EventArgs e)
		{
			this.GListBox.ItemHeight = 2 + (int)LSLEditor.Helpers.Measure.MeasureDisplayString(this.GListBox, "M", this.Font).Height;
		}

		public void KeyDownHandler(KeyEventArgs e)
		{
			if (!this.Visible)
				return;

			if (e.KeyCode == Keys.Enter)
			{
				// cancel richttext enter if listbox shows
				e.Handled = true;
			}
			if (e.KeyCode == Keys.Down)
			{
				this.gListBox1.SelectedIndex = Math.Min(this.gListBox1.Items.Count - 1, this.gListBox1.SelectedIndex + 1);
				e.Handled = true;
			}

			if (e.KeyCode == Keys.Up)
			{
				this.gListBox1.SelectedIndex = Math.Max(0, this.gListBox1.SelectedIndex - 1);
				e.Handled = true;
			}

			if (e.KeyCode == Keys.PageUp)
			{
				this.gListBox1.SelectedIndex = Math.Max(0,this.gListBox1.SelectedIndex - 10);
				e.Handled = true;
			}

			if (e.KeyCode == Keys.PageDown)
			{
				this.gListBox1.SelectedIndex = Math.Min(this.gListBox1.Items.Count - 1, this.gListBox1.SelectedIndex + 10);
				e.Handled = true;
			}
		}

		public void SetPosition(Rectangle rect,RichTextBox RichTextBox)
		{
			//Rectangle rect = Screen.PrimaryScreen.WorkingArea;
			Point p = RichTextBox.GetPositionFromCharIndex(RichTextBox.SelectionStart);

			p = new Point(p.X - 20, p.Y + this.gListBox1.ItemHeight); // ItemHeight = exact line height

			Rectangle client = RichTextBox.ClientRectangle;
			if (p.X < (client.Left-20) || p.Y < client.Top || p.X > client.Width || p.Y > client.Height)
			{
				this.Visible = false;
				return;
			}

			Point screen = RichTextBox.PointToScreen(p);

			//if ((screen.Y + this.Height) > rect.Height)
			//	screen = RichTextBox.PointToScreen(new Point(p.X - 20 + this.XOffset, p.Y - this.Height));

			if (screen.Y > rect.Bottom)
			{
				this.Visible = false;
				return;
				//screen.Y = rect.Bottom;
			}

			if (screen.X > rect.Right)
			{
				this.Visible = false;
				return;
				//screen.X = rect.Right;
			}

			if (screen.X < rect.Left)
			{
				this.Visible = false;
				return;
				//screen.X = rect.Left;
			}

			if ((screen.Y) < rect.Top)
			{
				this.Visible = false;
				return;
				//screen.Y = rect.Top;
			}
			
			this.Location = screen;
		}

		private void gListBox1_Resize(object sender, EventArgs e)
		{
			this.Size = this.gListBox1.Size;
		}

	}
}