/// <summary>
/// Create a default layer for creating a preview to another layer
/// </summary>
/// <param name="originalMap">The original map.</param>
/// <param name="originalLayer">The original layer.</param>
/// <returns>The created layer object.</returns>
private layerObj InitializeDefaultLayer(mapObj originalMap, layerObj originalLayer)
{
// create a new map object
map = new mapObj(null);
map.units = MS_UNITS.MS_PIXELS;
map.setExtent(0, 0, this.Width, this.Height);
map.width = this.Width;
map.height = this.Height;
outputFormatObj format = originalMap.outputformat;
if (map.getOutputFormatByName(format.name) == null)
map.appendOutputFormat(format);
map.selectOutputFormat(originalMap.imagetype);
// copy symbolset
for (int i = 1; i < originalMap.symbolset.numsymbols; i++)
{
symbolObj origsym = originalMap.symbolset.getSymbol(i);
map.symbolset.appendSymbol(MapUtils.CloneSymbol(origsym));
}
// copy the fontset
string key = null;
while ((key = originalMap.fontset.fonts.nextKey(key)) != null)
map.fontset.fonts.set(key, originalMap.fontset.fonts.get(key, ""));
// setting a default font
//map.fontset.fonts.set("",
// originalMap.fontset.fonts.get(originalMap.fontset.fonts.nextKey(null),""));
// insert a new layer
layerObj layer = new layerObj(map);
if (originalLayer != null)
{
// the chart type doesn't support having as single class in it
if (originalLayer.type == MS_LAYER_TYPE.MS_LAYER_CHART)
layer.type = MS_LAYER_TYPE.MS_LAYER_POLYGON;
else
layer.type = originalLayer.type;
originalLayer.open();
// add the sample feature to the layer
AddSampleFeature(layer, originalLayer.numitems);
if (originalLayer.getResults() == null)
originalLayer.close(); // close only is no query results
}
else
{
layer.type = MS_LAYER_TYPE.MS_LAYER_ANNOTATION;
// add the sample feature to the layer
AddSampleFeature(layer, 0);
}
layer.status = mapscript.MS_ON;
return layer;
}
