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MapTool.cs
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187 lines (162 loc) · 5.4 KB
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// Copyright 2014 - Felix Obermaier (www.ivv-aachen.de)
//
// This file is part of SharpMap.UI.
// SharpMap.UI is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// SharpMap.UI 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with SharpMap; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using System.Windows.Forms;
using GeoAPI.Geometries;
namespace SharpMap.Forms.Tools
{
/// <summary>
/// Abstract base class for <see cref="IMapTool"/> implementations
/// </summary>
public abstract class MapTool : IMapTool
{
//private Map _mapView;
private bool _enabled;
private Cursor _cursor;
/// <summary>
/// Creates an instance of this class assigning the
/// </summary>
/// <param name="name"></param>
/// <param name="description"></param>
protected MapTool(string name, string description)
{
Name = name;
Description = description;
}
/// <inheritdoc />
public Map Map { get; set; }
/// <inheritdoc />
public string Name { get; protected set; }
/// <inheritdoc />
public string Description { get; protected set; }
/// <summary>
/// Method stub to cancel this tool
/// </summary>
public virtual void Cancel()
{
}
/// <summary>
/// Event that is raised when the <see cref="Enabled"/> value has changed
/// </summary>
public event EventHandler EnabledChanged;
/// <summary>
/// Gets or sets a value indicating that this tool is enabled
/// </summary>
public bool Enabled
{
get { return _enabled; }
set
{
if (value == _enabled)
return;
_enabled = value;
OnEnabledChanged(EventArgs.Empty);
}
}
/// <summary>
/// Event invoker for the <see cref="EnabledChanged"/> event
/// </summary>
/// <param name="e"></param>
protected virtual void OnEnabledChanged(EventArgs e)
{
var h = EnabledChanged;
if (h != null) h(this, e);
}
/// <summary>
/// Gets the cursor used for map operation
/// </summary>
public Cursor Cursor
{
get { return _cursor; }
protected set
{
if (value == _cursor)
return;
_cursor = value;
OnCursorChanged(EventArgs.Empty);
}
}
/// <summary>
/// Event raised when the cursor has changed
/// </summary>
public event EventHandler CursorChanged;
/// <summary>
/// Event invoker for the <see cref="CursorChanged"/> event.
/// </summary>
/// <param name="e"></param>
protected virtual void OnCursorChanged(EventArgs e)
{
var handler = CursorChanged;
if (handler != null)
handler(this, e);
}
/// <inheritdoc />
public virtual bool DoMouseHover(Coordinate mapPosition)
{
return Enabled;
}
/// <inheritdoc />
public virtual bool DoMouseEnter()
{
return Enabled;
}
/// <inheritdoc />
public virtual bool DoMouseLeave()
{
return Enabled;
}
/// <inheritdoc />
public virtual bool DoMouseDoubleClick(Coordinate mapPosition, MouseEventArgs mouseEventArgs)
{
return Enabled;
}
/// <inheritdoc />
public virtual bool DoMouseDown(Coordinate mapPosition, MouseEventArgs mouseEventArgs)
{
return Enabled;
}
/// <inheritdoc />
public virtual bool DoMouseMove(Coordinate mapPosition, MouseEventArgs mouseEventArgs)
{
return Enabled;
}
/// <inheritdoc />
public virtual bool DoMouseUp(Coordinate mapPosition, MouseEventArgs mouseEventArgs)
{
return Enabled;
}
/// <inheritdoc />
public virtual bool DoMouseWheel(Coordinate mapPosition, MouseEventArgs mouseEventArgs)
{
return Enabled;
}
/// <inheritdoc />
public virtual void DoPaint(PaintEventArgs e)
{
}
/// <inheritdoc />
public virtual bool DoKeyDown(Coordinate mapPosition, KeyEventArgs keyEventArgs)
{
return Enabled;
}
/// <inheritdoc />
public virtual bool DoKeyUp(Coordinate mapPosition, KeyEventArgs keyEventArgs)
{
return Enabled;
}
}
}