// A function that reads all values in the dialog (selected layers, color, size) to build the multilayer point symbol.
private async Task <MultilayerPointSymbol> GetCurrentSymbol()
{
// Create a list of keys that identify the selected symbol layers.
List <string> symbolKeys = new List <string>
{
_baseSymbolKey,
_symbolLayersPickerModel.SelectedSymbolKey1,
_symbolLayersPickerModel.SelectedSymbolKey2,
_symbolLayersPickerModel.SelectedSymbolKey3
};
// Use the list of keys to return symbols from the mobile style (they will be combined and returned as a multilayer point symbol).
MultilayerPointSymbol faceSymbol = await _emojiStyle.GetSymbolAsync(symbolKeys) as MultilayerPointSymbol;
// Loop through all symbol layers and lock the color (changing the color property on the symbol will not affect these layers).
foreach (SymbolLayer lyr in faceSymbol.SymbolLayers)
{
lyr.IsColorLocked = true;
}
// Unlock the color for the base (first) layer. Changing the symbol color will change this layer's color.
faceSymbol.SymbolLayers.First().IsColorLocked = false;
// Get the System.Drawing.Color from the color list that corresponds to the selected segment in the color control.
System.Drawing.Color selectedUIColor = _colorList[(int)_colorSegments.SelectedSegment];
// Set the symbol color using the selected color.
faceSymbol.Color = selectedUIColor;
// Set the symbol size from the slider.
faceSymbol.Size = _sizeSlider.Value;
// Return the multilayer point symbol.
return(faceSymbol);
}
private async Task <MultilayerPointSymbol> GetCurrentSymbol()
{
// If the style hasn't been opened, return.
if (_emojiStyle == null)
{
return(null);
}
MultilayerPointSymbol faceSymbol = null;
try
{
// Get the key that identifies the selected eye symbol (or an empty string if none selected).
SymbolLayerInfo eyeLayerInfo = (SymbolLayerInfo)EyeSymbolList.SelectedItem;
string eyeLayerKey = eyeLayerInfo != null ? eyeLayerInfo.Key : string.Empty;
// Get the key that identifies the selected mouth symbol (or an empty string if none selected).
SymbolLayerInfo mouthLayerInfo = (SymbolLayerInfo)MouthSymbolList.SelectedItem;
string mouthLayerKey = mouthLayerInfo != null ? mouthLayerInfo.Key : string.Empty;
// Get the key that identifies the selected hat symbol (or an empty string if none selected).
SymbolLayerInfo hatLayerInfo = (SymbolLayerInfo)HatSymbolList.SelectedItem;
string hatLayerKey = hatLayerInfo != null ? hatLayerInfo.Key : string.Empty;
// Create a list of the symbol keys that identify the selected symbol layers, including the base (circle) symbol.
List <string> symbolKeys = new List <string>
{
_baseSymbolKey, eyeLayerKey, mouthLayerKey, hatLayerKey
};
// Get a multilayer point symbol from the style that contains the selected symbol layers.
faceSymbol = await _emojiStyle.GetSymbolAsync(symbolKeys) as MultilayerPointSymbol;
// Loop through all symbol layers and lock the color.
foreach (SymbolLayer lyr in faceSymbol.SymbolLayers)
{
// Changing the color of the symbol will not affect this layer.
lyr.IsColorLocked = true;
}
// Unlock the color for the base (first) layer. Changing the symbol color will change this layer's color.
faceSymbol.SymbolLayers.First().IsColorLocked = false;
// Set the symbol color from the combo box.
if (FaceColorComboBox.SelectedItem != null)
{
faceSymbol.Color = (Color)FaceColorComboBox.SelectedItem;
}
// Set the symbol size from the slider.
faceSymbol.Size = SizeSlider.Value;
}
catch (Exception ex)
{
MessageBox.Show("Unable to create symbol: " + ex.Message, "Exception");
}
// Return the multilayer point symbol.
return(faceSymbol);
}
// A function to get a multilayer point symbol that contains all selected symbol layers.
private async Task <MultilayerPointSymbol> GetCurrentSymbol()
{
MultilayerPointSymbol faceSymbol = null;
try
{
// Create a new list of strings with the key for the base (face) symbol and any additional selected layers.
List <string> symbolKeys = new List <string>
{
_baseSymbolKey, _selectedEyesKey, _selectedMouthKey, _selectedHatKey
};
// Use the keys to get the symbol layers as a multilayer symbol.
faceSymbol = await _emojiStyle.GetSymbolAsync(symbolKeys) as MultilayerPointSymbol;
// Loop through all symbol layers and lock the color.
foreach (SymbolLayer lyr in faceSymbol.SymbolLayers)
{
// Changing the color of the symbol will not affect this layer.
lyr.IsColorLocked = true;
}
// Unlock the color for the base (first) layer. Changing the symbol color will change this layer's color.
faceSymbol.SymbolLayers.First().IsColorLocked = false;
// Set the symbol color using the last selected color.
System.Drawing.Color symbolColor = System.Drawing.Color.FromArgb(_faceColor.A, _faceColor.R, _faceColor.G, _faceColor.B);
faceSymbol.Color = symbolColor;
// Set the symbol size from the slider.
faceSymbol.Size = _symbolSize;
}
catch (Exception ex)
{
// Show the exception message.
AlertDialog.Builder alertBuilder = new AlertDialog.Builder(Activity);
alertBuilder.SetTitle("Error creating symbol");
alertBuilder.SetMessage(ex.Message);
alertBuilder.Show();
}
// Return the constructed symbol.
return(faceSymbol);
}
private async void Initialize()
{
// Create a new map to display in the map view with a streets basemap
Map myMap = new Map(Basemap.CreateStreets());
string file_shapefile_location = parent.FullName + "\\Data\\Public_Art.shp";
try
{
ShapefileFeatureTable myShapefile = await ShapefileFeatureTable.OpenAsync(file_shapefile_location);
// Create a feature layer to display the shapefile
FeatureLayer newFeatureLayer = new FeatureLayer(myShapefile);
string file_to_stylx = parent.FullName + "\\Data\\style.stylx";
symbolStyle = await SymbolStyle.OpenAsync(file_to_stylx);
IList <String> stringList = new List <string>();
stringList.Add("shoppingcenter01");
stringList.Add("marker01");
SimpleRenderer simpleRenderer = new SimpleRenderer(await symbolStyle.GetSymbolAsync(stringList));
newFeatureLayer.Renderer = simpleRenderer;
// Add the feature layer to the map
myMap.OperationalLayers.Add(newFeatureLayer);
// Zoom the map to the extent of the shapefile
MyMapView.Map = myMap;
await MyMapView.SetViewpointGeometryAsync(newFeatureLayer.FullExtent);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
