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/******************************************************************************
* $Id$
*
* Project: MapServer
* Purpose: A C# based mapscript example to draw the map directly onto a GDI
* device context.
* Author: Tamas Szekeres, szekerest@gmail.com
*
******************************************************************************
* Copyright (c) 1996-2008 Regents of the University of Minnesota.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies of this Software or works derived from this Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
using System;
using System.Drawing;
using System.Drawing.Imaging;
using OSGeo.MapServer;
/// <summary>
/// A C# based mapscript example to draw the map directly onto a GDI device context.
/// </summary>
class DrawMap
{
public static void usage()
{
Console.WriteLine("usage: DrawMapDirect {mapfile} {outfile}");
System.Environment.Exit(-1);
}
public static void Main(string[] args)
{
Console.WriteLine("");
if (args.Length < 2) usage();
mapObj map = new mapObj(args[0]);
Console.WriteLine("# Map layers " + map.numlayers + "; Map name = " + map.name);
for (int i = 0; i < map.numlayers; i++)
{
Console.WriteLine("Layer [" + i + "] name: " + map.getLayer(i).name);
}
try
{
// Create the output format
outputFormatObj of = new outputFormatObj("CAIRO/WINGDI", "cairowinGDI");
map.appendOutputFormat(of);
map.selectOutputFormat("cairowinGDI");
Bitmap mapImage = new Bitmap(map.width, map.height, PixelFormat.Format32bppRgb);
using (Graphics g = Graphics.FromImage(mapImage))
{
IntPtr hdc = g.GetHdc();
try
{
// Attach the device to the outputformat for drawing
of.attachDevice(hdc);
// Drawing directly to the GDI context
using (imageObj image = map.draw()) { };
}
finally
{
of.attachDevice(IntPtr.Zero);
g.ReleaseHdc(hdc);
}
}
mapImage.Save(args[1]);
}
catch (Exception ex)
{
Console.WriteLine( "\nMessage ---\n{0}", ex.Message );
Console.WriteLine(
"\nHelpLink ---\n{0}", ex.HelpLink );
Console.WriteLine( "\nSource ---\n{0}", ex.Source );
Console.WriteLine(
"\nStackTrace ---\n{0}", ex.StackTrace );
Console.WriteLine(
"\nTargetSite ---\n{0}", ex.TargetSite ); }
}
}
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