/// <summary>
/// Creating a sample (preview) based on a classObj, styleObj or labelObj.
/// </summary>
/// <param name="original">The wrapper holding the original object.</param>
private void CreateSampleMap(MapObjectHolder original)
{
MapObjectHolder originalMap = null;
MapObjectHolder originalLayer = null;
MapObjectHolder originalClass = null;
// create a sample map to render a preview of the given object
if (original.GetType() == typeof(classObj))
{
// tracking down the whole object tree
originalLayer = original.GetParent();
if (originalLayer != null)
originalMap = originalLayer.GetParent();
// creating a new compatible map object
if (originalMap != null)
{
layerObj layer = InitializeDefaultLayer(originalMap, originalLayer);
layer.insertClass(((classObj)original).clone(), -1);
// bindings are not supported with sample maps
classObj classobj = layer.getClass(0);
for (int i = 0; i < classobj.numstyles; i++)
StyleBindingController.RemoveAllBindings(classobj.getStyle(i));
for (int i = 0; i < classobj.numlabels; i++)
LabelBindingController.RemoveAllBindings(classobj.getLabel(i));
classobj.setText("Sample text");
classobj.setExpression(""); // remove expression to have the class shown
this.target = new MapObjectHolder(classobj, original.GetParent());
}
}
else if (original.GetType() == typeof(styleObj))
{
// tracking down the whole object tree
if (original.GetParent().GetType() == typeof(labelObj))
originalClass = original.GetParent().GetParent();
else
originalClass = original.GetParent();
if (originalClass != null)
originalLayer = originalClass.GetParent();
if (originalLayer != null)
originalMap = originalLayer.GetParent();
// creating a new compatible map object
if (originalMap != null)
{
layerObj layer = InitializeDefaultLayer(originalMap, originalLayer);
classObj classobj = new classObj(layer);
classobj.name = MapUtils.GetClassName(layer);
styleObj style;
if (original.GetParent().GetType() == typeof(labelObj))
{
classobj.addLabel(new labelObj());
labelObj label = classobj.getLabel(classobj.numlabels - 1);
MapUtils.SetDefaultLabel(label, layer.map);
label.insertStyle(((styleObj)original).clone(), -1);
style = label.getStyle(0);
}
else
{
classobj.insertStyle(((styleObj)original).clone(), -1);
style = classobj.getStyle(0);
}
// bindings are not supported with sample maps
StyleBindingController.RemoveAllBindings(style);
classobj.setText("Sample text");
this.target = new MapObjectHolder(style, original.GetParent());
}
}
else if (original.GetType() == typeof(labelObj))
{
// tracking down the whole object tree
originalClass = original.GetParent();
if (originalClass != null)
{
if (originalClass.GetType() == typeof(classObj))
{
originalLayer = originalClass.GetParent();
if (originalLayer != null)
originalMap = originalLayer.GetParent();
}
else if (originalClass.GetType() == typeof(scalebarObj))
{
originalMap = originalClass.GetParent();
}
}
// creating a new compatible map object
if (originalMap != null)
{
layerObj layer = InitializeDefaultLayer(originalMap, originalLayer);
classObj classobj = new classObj(layer);
classobj.name = MapUtils.GetClassName(layer);
labelObj label = new labelObj();
if (originalClass.GetType() == typeof(classObj))
{
// copy settings
label.updateFromString(((labelObj)original).convertToString());
}
classobj.addLabel(label);
this.target = new MapObjectHolder(layer.getClass(0).getLabel(0), original.GetParent());
}
}
else
throw new Exception("Invalid target type: " + original.GetType());
}
/// <summary>
/// Adding a new labelObj to the corresponding classObj.
/// </summary>
/// <param name="nodes">The TreeNodeCollection of the parent object</param>
/// <param name="labelHolder">Wrapper class containing the labelObj and the parent object</param>
/// <param name="imageList">The image list where the label image should be stored.</param>
/// <param name="index">The current index of the label object.</param>
private void AddLabelNode(TreeNodeCollection nodes, MapObjectHolder labelHolder, ImageList imageList, int index)
{
layerObj layer = labelHolder.GetParent().GetParent();
classObj layerclass = labelHolder.GetParent();
labelObj classLabel = labelHolder;
classObj labelclass = new classObj(null);
labelclass.name = MapUtils.GetClassName(layer);
labelclass.addLabel(classLabel);
// creating the treeicons
using (classObj def_class = new classObj(null)) // for drawing legend images
{
using (imageObj image2 = def_class.createLegendIcon(
map, layer, legendIconSize.Width, legendIconSize.Height))
{
MS_LAYER_TYPE layertype = layer.type;
layer.type = MS_LAYER_TYPE.MS_LAYER_ANNOTATION;
labelclass.drawLegendIcon(map, layer,
legendDrawingSize.Width, legendDrawingSize.Height, image2,
LegendIconPadding.Left, LegendIconPadding.Top);
layer.type = layertype;
byte[] img = image2.getBytes();
using (MemoryStream ms = new MemoryStream(img))
{
imageList.Images.Add(Image.FromStream(ms));
}
TreeNode labelNode = new TreeNode("Label (" + index + ")",
imageList.Images.Count - 1, imageList.Images.Count - 1);
labelNode.Tag = labelHolder;
labelNode.Checked = true;
nodes.Add(labelNode);
}
}
}
