Developer's Guide - MapGuide Open Source - OSGeo

Mapping Service
The Mapping Service creates eMap and ePlot DWFs.
Generating an eMap DWF requires the DWF version and the URI of the map
agent. Note that the HTTP header must include content length information,
as in the following example.
$dwfVersion = new MgDwfVersion("6.01", "1.2");
$mapAgentUri =
'http://localhost:8008/mapguide/mapagent/mapagent.exe';
$byteReader = $mappingService->GenerateMap($map, $mapAgentUri,
$dwfVersion);
$outputBuffer = '';
$buffer = '';
while ($byteReader->Read($buffer, 50000) != 0)
{
$outputBuffer .= $buffer;
}
header('Content-Type: ' . $byteReader->GetMimeType());
header('Content-Length: ' . strlen($outputBuffer));
echo $outputBuffer;
An ePlot DWF is designed primarily for offline viewing or printing. It includes
an MgPlotSpecification that defines the page size and margins. It can also
include an optional MgLayout that defines additional components to include
in the plot, like a legend or a custom logo. The layout is based on a print
layout in the repository. For a description of the PrintLayout schema, see the
MapGuide Web API Reference.
To create an ePlot DWF with more than one sheet, use an
MgMapPlotCollection, where each item in the collection is an MgMapPlot that
describes a single sheet.
NOTE The map name becomes the sheet name in the multi-plot DWF. Because
each sheet in the DWF must have a unique name, you must create a separate
MgMap object for each sheet in the DWF.
The following example creates a multi-plot DWF with two sheets. The second
sheet displays the same map area as the first, but it adds the title and legend
information from the print layout.
98 | Chapter 7 Custom Output