The map export API makes it easier for the
user to export a part of a map to different output formats.
Class for exporting selected map features
The main class is the IlvMapExportManager. This class is
responsible for exporting selected map features of a map through
specified export plug-ins known as IlvMapExportManager.IlvMapExporter
implementations.
Exporters
IlvMapExportManager.IlvMapExporter is an
interface that defines the expected methods of any object capable
of writing map features in sequence.
Two kind of exporters can be set on the IlvMapExportManager:
- A vectorial exporter, which handles all vectorial map features when exporting a map.
- A raster exporter, which handles map features containing raster data.
They are set by calling the methods setVectorialExporter and setRasterExporter on an
IlvMapExportManager
instance.
A region of export can also be set on the
IlvMapExportManager
so that map features outside this region are not exported.
Once the two exporters of a
IlvMapExportManager
object are properly set and configured, an array of IlvMapLayer instances of the map may be
exported with the method exportMapLayers.
The IlvMapExportDialog class
The IlvMapExportDialog is a user-friendly
dialog box class that lets the user choose:
- The exporters to use (from a list of registered exporters)
- A list of map layers to export
- A region of interest for the export
Export Map Dialog Box
Vectorial and raster exporters are registered with this dialog
box through the methods registerVectorExporter and registerRasterExporter, and similarly are
removed by calling unregisterVectorExporter and unregisterRasterExporter methods.