#region Disclaimer / License
// Copyright (C) 2010, Jackie Ng
// http://trac.osgeo.org/mapguide/wiki/maestro, jumpinjackie@gmail.com
//
// This library 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 2.1 of the License, or (at your option) any later version.
//
// This library 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 this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using OSGeo.MapGuide.MaestroAPI.Resource;
using OSGeo.MapGuide.ObjectModels.Common;
using OSGeo.MapGuide.MaestroAPI;
using OSGeo.MapGuide.MaestroAPI.Services;
using System.IO;
namespace OSGeo.MapGuide.ObjectModels.DrawingSource
{
///
/// A DWF-based Drawing Source
///
public interface IDrawingSource : IResource
{
///
/// Gets or sets the name of the source (dwf file).
///
/// The name of the source.
string SourceName { get; set; }
///
/// Gets or sets the coordinate space.
///
/// The coordinate space.
string CoordinateSpace { get; set; }
///
/// Removes all sheets.
///
void RemoveAllSheets();
///
/// Gets the sheets.
///
/// The sheets.
IEnumerable Sheet { get; }
///
/// Adds the sheet.
///
/// The sheet.
void AddSheet(IDrawingSourceSheet sheet);
///
/// Removes the sheet.
///
/// The sheet.
void RemoveSheet(IDrawingSourceSheet sheet);
///
/// Creates the sheet.
///
/// The name.
/// The minx.
/// The miny.
/// The maxx.
/// The maxy.
///
IDrawingSourceSheet CreateSheet(string name, double minx, double miny, double maxx, double maxy);
}
///
/// Represents a sheet (DWF section)
///
public interface IDrawingSourceSheet
{
///
/// Gets or sets the name.
///
/// The name.
string Name { get; set; }
///
/// Gets or sets the extent.
///
/// The extent.
IEnvelope Extent { get; set; }
}
///
/// Extension methods for Drawing Sources
///
public static class DrawingSourceExtensions
{
///
/// Updates the extents of all sheets based on their respective AutoCAD Viewport Data in the embedded PIA resource
///
///
public static void UpdateExtents(this IDrawingSource source)
{
Check.NotNull(source, "source");
Check.NotEmpty(source.ResourceID, "source.ResourceID");
//Need drawing service
if (Array.IndexOf(source.CurrentConnection.Capabilities.SupportedServices, (int)ServiceType.Drawing) < 0)
throw new NotSupportedException(string.Format(OSGeo.MapGuide.MaestroAPI.Properties.Resources.ERR_SERVICE_NOT_SUPPORTED, ServiceType.Drawing.ToString()));
var drawSvc = (IDrawingService)source.CurrentConnection.GetService((int)ServiceType.Drawing);
foreach (var sht in source.Sheet)
{
var list = drawSvc.EnumerateDrawingSectionResources(source.ResourceID, sht.Name);
foreach (var res in list.SectionResource)
{
if (res.Role == "AutoCAD Viewport Data")
{
using (var stream = drawSvc.GetSectionResource(source.ResourceID, res.Href))
{
//This is text content
using (var sr = new StreamReader(stream))
{
try
{
string content = sr.ReadToEnd();
//Viewport parameters are:
//
// llx
// lly
// urx
// ury
//
//A the first space after each number of each parameter marks the end of that value
int idx = content.IndexOf("llx") + 4; // 4 - length of "llx="
string sllx = content.Substring(idx, content.IndexOf(" ", idx) - idx);
idx = content.IndexOf("lly") + 4; // 4 - length of "lly="
string slly = content.Substring(idx, content.IndexOf(" ", idx) - idx);
idx = content.IndexOf("urx") + 4; // 4 - length of "urx="
string surx = content.Substring(idx, content.IndexOf(" ", idx) - idx);
idx = content.IndexOf("ury") + 4; // 4 - length of "ury="
string sury = content.Substring(idx, content.IndexOf(" ", idx) - idx);
//Update extents
sht.Extent = ObjectFactory.CreateEnvelope(
Convert.ToDouble(sllx),
Convert.ToDouble(slly),
Convert.ToDouble(surx),
Convert.ToDouble(sury));
}
catch { }
}
}
}
}
}
}
}
}