/// <summary>
/// Change the extent of the map according to the extent of the layer.
/// Reproject the extent if the layer and the map projection differs.
/// </summary>
/// <param name="layer">The layer to be used to calculate the extent</param>
private void ZoomToLayerExtent(layerObj layer)
{
try
{
if (layer.connectiontype == MS_CONNECTION_TYPE.MS_PLUGIN &&
layer.plugin_library == "msplugin_mssql2008.dll")
GetMssqlSpatialLayerExtent(layer);
using (rectObj extent = layer.getExtent())
{
if (extent.minx < extent.maxx && extent.miny < extent.maxy)
{
if (map.getProjection() != "" && layer.getProjection() != "")
{
// need to reproject the extent
using (projectionObj oldProj = new projectionObj(layer.getProjection()))
{
using (projectionObj newProj = new projectionObj(map.getProjection()))
{
using (rectObj rect = new rectObj(extent.minx, extent.miny, extent.maxx, extent.maxy, 0))
{
rect.project(oldProj, newProj);
if (rect.minx < rect.maxx && rect.miny < rect.maxy)
map.setExtent(rect.minx, rect.miny, rect.maxx, rect.maxy);
if (target != null)
{
target.RaisePropertyChanged(this);
RaiseZoomChanged();
}
}
}
}
}
else
{
// don't reproject
map.setExtent(extent.minx, extent.miny, extent.maxx, extent.maxy);
if (target != null)
{
target.RaisePropertyChanged(this);
RaiseZoomChanged();
}
}
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
/// <summary>
/// Create the theme according to the individual values of the layer contents
/// </summary>
private MapObjectHolder CreateLayerTheme()
{
if (layer == null)
{
return(null);
}
mapObj map = target.GetParent();
// create a new map object
mapObj newMap = new mapObj(null);
newMap.units = MS_UNITS.MS_PIXELS;
map.selectOutputFormat(map.imagetype);
// copy symbolset
for (int s = 1; s < map.symbolset.numsymbols; s++)
{
symbolObj origsym = map.symbolset.getSymbol(s);
newMap.symbolset.appendSymbol(MapUtils.CloneSymbol(origsym));
}
// copy the fontset
string key = null;
while ((key = map.fontset.fonts.nextKey(key)) != null)
{
newMap.fontset.fonts.set(key, map.fontset.fonts.get(key, ""));
}
newLayer = new layerObj(newMap);
newLayer.type = layer.type;
newLayer.status = mapscript.MS_ON;
newLayer.connectiontype = MS_CONNECTION_TYPE.MS_INLINE;
// add the classObj and styles
classObj classobj;
if (checkBoxKeepStyles.Checked)
{
classobj = layer.getClass(0).clone();
classobj.setExpression(""); // remove expression to have the class shown
// bindings are not supported with sample maps
for (int s = 0; s < classobj.numstyles; s++)
{
StyleBindingController.RemoveAllBindings(classobj.getStyle(s));
}
for (int l = 0; l < classobj.numlabels; l++)
{
LabelBindingController.RemoveAllBindings(classobj.getLabel(l));
}
newLayer.insertClass(classobj, -1);
}
else
{
classobj = new classObj(newLayer);
classobj.name = MapUtils.GetClassName(newLayer);
styleObj style = new styleObj(classobj);
style.size = 8; // set default size (#4339)
if (layer.type == MS_LAYER_TYPE.MS_LAYER_POINT)
{
// initialize with the default marker if specified in the symbol file for point symbols
symbolObj symbol;
for (int s = 0; s < map.symbolset.numsymbols; s++)
{
symbol = map.symbolset.getSymbol(s);
if (symbol.name == "default-marker")
{
style.symbol = s;
style.symbolname = "default-marker";
break;
}
}
}
MapUtils.SetDefaultColor(layer.type, style);
}
SortedDictionary <string, string> items = new SortedDictionary <string, string>();
int i = 0;
shapeObj shape;
layer.open();
layer.whichShapes(layer.getExtent());
if (checkBoxClassItem.Checked)
{
layer.classitem = comboBoxColumns.SelectedItem.ToString();
}
while ((shape = layer.nextShape()) != null)
{
string value = shape.getValue(comboBoxColumns.SelectedIndex);
if (checkBoxZero.Checked && (value == "" || value == ""))
{
continue;
}
if (!items.ContainsValue(value))
{
if (i == 100)
{
if (MessageBox.Show("The number of the individual values is greater than 100 would you like to continue?", "MapManager",
MessageBoxButtons.OKCancel, MessageBoxIcon.Exclamation) == DialogResult.Cancel)
{
break;
}
}
items.Add(value, value);
++i;
}
}
if (layer.getResults() == null)
{
layer.close(); // close only is no query results
}
i = 0;
foreach (string value in items.Keys)
{
double percent = ((double)(i + 1)) / items.Count * 100;
// creating the corresponding class object
if (i > 0)
{
classobj = classobj.clone();
// bindings are not supported with sample maps
for (int s = 0; s < classobj.numstyles; s++)
{
StyleBindingController.RemoveAllBindings(classobj.getStyle(s));
}
for (int l = 0; l < classobj.numlabels; l++)
{
LabelBindingController.RemoveAllBindings(classobj.getLabel(l));
}
newLayer.insertClass(classobj, -1);
}
classobj.name = value;
if (checkBoxClassItem.Checked)
{
classobj.setExpression(value);
}
else
{
classobj.setExpression("('[" + comboBoxColumns.SelectedItem + "]' = '" + value + "')");
}
for (int j = 0; j < classobj.numstyles; j++)
{
styleObj style = classobj.getStyle(j);
style.color = colorRampPickerColor.GetMapColorAtValue(percent);
style.outlinecolor = colorRampPickerOutlineColor.GetMapColorAtValue(percent);
style.backgroundcolor = colorRampPickerBackgroundColor.GetMapColorAtValue(percent);
if (checkBoxFirstOnly.Checked)
{
break;
}
}
++i;
}
return(new MapObjectHolder(newLayer, new MapObjectHolder(newMap, null)));
}
/// <summary>
/// Refresh the controls according to the underlying object.
/// </summary>
public void RefreshView()
{
if (layer == null)
{
return;
}
shapeObj shape;
layer.open();
// Get layer statistics
maxvalue = new double[layer.numitems];
minvalue = new double[layer.numitems];
fieldName = new string[layer.numitems];
isNumber = new bool[layer.numitems];
isInteger = new bool[layer.numitems];
valueCount = new int[layer.numitems];
int i;
for (i = 0; i < layer.numitems; i++)
{
isNumber[i] = true;
isInteger[i] = true;
valueCount[i] = 0;
fieldName[i] = layer.getItem(i);
}
layer.whichShapes(layer.getExtent());
NumberFormatInfo ni = new NumberFormatInfo();
ni.NumberDecimalSeparator = ".";
double val;
while ((shape = layer.nextShape()) != null)
{
for (i = 0; i < layer.numitems; i++)
{
if (isNumber[i])
{
string v = shape.getValue(i);
if (v != "" && Double.TryParse(v, NumberStyles.Any, ni, out val))
{
if (val % 1 != 0)
{
isInteger[i] = false;
}
if (valueCount[i] == 0)
{
maxvalue[i] = val;
minvalue[i] = val;
}
else
{
if (maxvalue[i] < val)
{
maxvalue[i] = val;
}
if (minvalue[i] > val)
{
minvalue[i] = val;
}
}
++valueCount[i];
}
else
{
isNumber[i] = false;
isInteger[i] = false;
}
}
}
}
for (i = 0; i < layer.numitems; i++)
{
if (isNumber[i])
{
comboBoxColumns.Items.Add(fieldName[i]);
}
}
if (comboBoxColumns.Items.Count > 0)
{
comboBoxColumns.SelectedIndex = 0;
}
if (layer.getResults() == null)
{
layer.close(); // close only is no query results
}
}