LinedefsMode.cs

#region ================== Copyright (c) 2007 Pascal vd Heiden

/*
 * Copyright (c) 2007 Pascal vd Heiden, www.codeimp.com
 * This program is released under GNU General Public License
 * 
 * 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.
 * 
 */

#endregion

#region ================== Namespaces

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;
using CodeImp.DoomBuilder.Actions;
using CodeImp.DoomBuilder.BuilderModes.Interface;
using CodeImp.DoomBuilder.Data;
using CodeImp.DoomBuilder.Editing;
using CodeImp.DoomBuilder.Geometry;
using CodeImp.DoomBuilder.Map;
using CodeImp.DoomBuilder.Rendering;
using CodeImp.DoomBuilder.Windows;

#endregion

namespace CodeImp.DoomBuilder.BuilderModes
{
	[EditMode(DisplayName = "Linedefs Mode",
			  SwitchAction = "linedefsmode",	// Action name used to switch to this mode
			  ButtonImage = "LinesMode.png",	// Image resource name for the button
			  ButtonOrder = int.MinValue + 100,	// Position of the button (lower is more to the left)
			  ButtonGroup = "000_editing",
			  UseByDefault = true,
			  SafeStartMode = true)]

	public class LinedefsMode : BaseClassicMode
	{
		#region ================== Constants

		private const int MAX_LINEDEF_LABELS = 256; //mxd

		#endregion

		#region ================== Variables

		// Highlighted item
		private Linedef highlighted;
		private readonly Association highlightasso;
		private Vector2D insertpreview = new Vector2D(float.NaN, float.NaN); //mxd

		//mxd. Text labels
		private Dictionary<Linedef, SelectionLabel> labels;
		private Dictionary<Sector, TextLabel[]> sectorlabels;
		private Dictionary<Sector, string[]> sectortexts;
		
		// Interface
		new private bool editpressed;

		// The blockmap makes is used to make finding lines faster
		BlockMap<BlockEntry> blockmap;

		// Stores sizes of the text for text labels so that they only have to be computed once
		private Dictionary<string, float> textlabelsizecache;

		// Linedefs that will be edited
		ICollection<Linedef> editlines;

		// Autosave
		private bool allowautosave;

		#endregion

		#region ================== Properties

		public override object HighlightedObject { get { return highlighted; } }

		public override bool AlwaysShowVertices { get { return true; } }

		#endregion

		#region ================== Constructor / Disposer

		public LinedefsMode()
		{
			//mxd. Associations now requre initializing...
			highlightasso = new Association(renderer);

			textlabelsizecache = new Dictionary<string, float>();
		}

		//mxd
		public override void Dispose()
		{
			// Not already disposed?
			if(!isdisposed)
			{
				// Dispose old labels
				if(labels != null) foreach(SelectionLabel l in labels.Values) l.Dispose();
				if(sectorlabels != null)
				{
					foreach(TextLabel[] lbl in sectorlabels.Values)
						foreach(TextLabel l in lbl) l.Dispose();
				}

				// Dispose base
				base.Dispose();
			}
		}

		#endregion

		#region ================== Methods

		// This highlights a new item
		private void Highlight(Linedef l)
		{
			bool completeredraw = false;

			// Often we can get away by simply undrawing the previous
			// highlight and drawing the new highlight. But if associations
			// are or were drawn we need to redraw the entire display.
			
			if(highlighted != null)
			{
				//mxd. Update label color?
				if(labels.ContainsKey(highlighted))
				{
					labels[highlighted].Color = General.Colors.Highlight;
					completeredraw = true;
				}

				// Previous association highlights something?
				if (!highlightasso.IsEmpty) completeredraw = true;
			}
			
			// Set highlight association
			if(l != null)
			{
				//mxd. Update label color?
				if(labels.ContainsKey(l))
				{
					labels[l].Color = General.Colors.Selection;
					completeredraw = true;
				}

				// New association highlights something?
				highlightasso.Set(l);

				// Only need a complete redraw if the association contains elements
				if (!highlightasso.IsEmpty) completeredraw = true;
			}
			else
			{
				// Only need a complete redraw if the old association wasn't empty
				if (!highlightasso.IsEmpty) completeredraw = true;
				highlightasso.Clear();
			}

			// If we're changing associations, then we
			// need to redraw the entire display
			if(completeredraw)
			{
				// Set new highlight and redraw completely
				highlighted = l;
				General.Interface.RedrawDisplay();
			}
			else
			{
				// Update display
				if(renderer.StartPlotter(false))
				{
					// Undraw previous highlight
					Linedef possiblecommentline = l ?? highlighted; //mxd
					if((highlighted != null) && !highlighted.IsDisposed)
					{
						renderer.PlotLinedef(highlighted, renderer.DetermineLinedefColor(highlighted));
						renderer.PlotVertex(highlighted.Start, renderer.DetermineVertexColor(highlighted.Start));
						renderer.PlotVertex(highlighted.End, renderer.DetermineVertexColor(highlighted.End));
					}

					// Set new highlight
					highlighted = l;

					// Render highlighted item
					if((highlighted != null) && !highlighted.IsDisposed)
					{
						renderer.PlotLinedef(highlighted, General.Colors.Highlight);
						renderer.PlotVertex(highlighted.Start, renderer.DetermineVertexColor(highlighted.Start));
						renderer.PlotVertex(highlighted.End, renderer.DetermineVertexColor(highlighted.End));
					}