private static Dictionary <string, Dictionary <string, CartoRule> > CollectSymbolizers(CartoDefinition def, ZoomStruct zooms, int i, Env env, ICartoTranslator cartoTranslator)
{
Dictionary <string, Dictionary <string, CartoRule> > symbolizers = new Dictionary <string, Dictionary <string, CartoRule> >();
NodeList <CartoRule> rules = def.Rules;
for (int j = i; j < rules.Count; j++)
{
CartoRule child = rules[j];
string symName = cartoTranslator.GetSymbolizerName(child.Name);
string key = child.Instance + "/" + symName;
if ((zooms.Current & child.Zoom) != 0 &&
(!(symbolizers.ContainsKey(key)) || (symbolizers[key] != null && !(symbolizers[key].ContainsKey(child.Name)))))
{
zooms.Current &= child.Zoom;
if (!(symbolizers.ContainsKey(key)))
{
symbolizers[key] = new Dictionary <string, CartoRule>();
}
symbolizers[key][child.Name] = child;
}
}
if (symbolizers.Count > 0)
{
zooms.Rule &= (zooms.Available &= ~zooms.Current);
return(symbolizers);
}
return(null);
}
/// <summary>
/// Sort styles by the minimum index of their rules.
/// This sorts a slice of the styles, so it returns a sorted
/// array but does not change the input.
/// </summary>
/// <param name="styles"></param>
/// <param name="env"></param>
private static void SortStyles(List <CartoStyle> styles, Env env)
{
if (styles.Count == 0)
{
return;
}
for (var i = 0; i < styles.Count; i++)
{
CartoStyle style = styles[i];
style.Index = int.MaxValue;
for (int b = 0; b < style.Count; b++)
{
NodeList <CartoRule> rules = style[b].Rules;
for (var r = 0; r < rules.Count; r++)
{
CartoRule rule = rules[r];
if (rule.Index < style.Index)
{
style.Index = rule.Index;
}
}
}
}
styles.Sort(delegate(CartoStyle a, CartoStyle b) { return(a.Index.CompareTo(b.Index)); });
}
public static List <CartoDefinition> Flatten(this Ruleset ruleset, List <CartoDefinition> result, NodeList <CartoSelector> parents, Env env, Logging.Logger logger)
{
NodeList <CartoSelector> selectors = GetCartoSelectors(ruleset);
NodeList <CartoSelector> selectorsResult = new NodeList <CartoSelector>();
if (selectors.Count == 0)
{
env.Frames.Concat(ruleset.Rules);
}
// evaluate zoom variables on this object.
EvaluateZooms(selectors, env);
for (int i = 0; i < selectors.Count; i++)
{
CartoSelector child = selectors[i];
if (child.Filters == null)
{
// TODO: is this internal inconsistency?
// This is an invalid filterset.
continue;
}
if (parents.Count > 0)
{
foreach (CartoSelector parent in parents)
{
object mergedFilters = parent.Filters.CloneWith(child.Filters, env); //new CartoFilterSet(child.Filters);
if (mergedFilters == null)
{
// Filters could be added, but they didn't change the
// filters. This means that we only have to clone when
// the zoom levels or the attachment is different too.
if (parent.Zoom == (parent.Zoom & child.Zoom) && parent.Attachment == child.Attachment && parent.ElementsEqual(child))
{
selectorsResult.Add(parent);
continue;
}
else
{
mergedFilters = parent.Filters;
}
}
else if (mergedFilters is bool && !(Convert.ToBoolean(mergedFilters)))
{
// The merged filters are invalid, that means we don't
// have to clone.
continue;
}
CartoSelector clone = new CartoSelector(child);
clone.Filters = (CartoFilterSet)mergedFilters;
clone.Zoom = parent.Zoom & child.Zoom;
clone.Elements.Clear();
clone.Elements.AddRange(parent.Elements.Concat(child.Elements));
if (parent.Attachment != null && child.Attachment != null)
{
clone.Attachment = parent.Attachment + '/' + child.Attachment;
}
else
{
clone.Attachment = child.Attachment ?? parent.Attachment;
}
clone.Conditions = parent.Conditions + child.Conditions;
clone.Index = child.Index;
selectorsResult.Add(clone);
}
}
else
{
selectorsResult.Add(child);
}
}
NodeList <CartoRule> rules = new NodeList <CartoRule>();
foreach (dotless.Core.Parser.Infrastructure.Nodes.Node rule in ruleset.Rules)
{
// Recursively flatten any nested rulesets
if (rule is Ruleset)
{
List <CartoDefinition> defs = Flatten(rule as Ruleset, result, selectorsResult, env, logger);
}
else if (rule is CartoRule)
{
rules.Add(rule as CartoRule);
}
else if (rule as CartoInvalidElement)
{
CartoInvalidElement cie = rule as CartoInvalidElement;
env.Logger.Log(dotless.Core.Loggers.LogLevel.Error, "Rule");
Logging.LogFactory.WriteLogEntry(logger, new ParsingException(cie.Value, cie.Location.FileName, Zone.GetLineNumber(cie.Location)));
}
}
int index = rules.Count > 0 ? rules[0].Index : -1;
for (int i = 0; i < selectorsResult.Count; i++)
{
// For specificity sort, use the position of the first rule to allow
// defining attachments that are under current element as a descendant
// selector.
CartoSelector selector = selectorsResult[i];
if (index >= 0)
{
selector.Index = index;
}
// make a copy of the rules array, since the next iteration will change zooms
CartoRule[] arrRules = new CartoRule[rules.Count];
for (int j = 0; j < arrRules.Length; j++)
{
arrRules[j] = (CartoRule)rules[j].Clone();
}
result.Add(new CartoDefinition(selector, arrRules));
}
return(result);
}
private static void CreateSymbolizers(Rule rule, Dictionary <string, Dictionary <string, CartoRule> > symbolizers, Env env, ICartoTranslator cartoTranslator)
{
// Sort symbolizers by the index of their first property definition
List <KeyValuePair <string, int> > symOrder = new List <KeyValuePair <string, int> >();
List <int> indexes = new List <int>();
foreach (string key in symbolizers.Keys)
{
int minIdx = int.MaxValue;
var props = symbolizers[key];
foreach (var prop in props)
{
int index = props[prop.Key].Index;
if (index < minIdx)
{
minIdx = index;
}
}
symOrder.Add(new KeyValuePair <string, int>(key, minIdx));
}
// Get a simple list of the symbolizers, in order
symOrder.Sort(delegate(KeyValuePair <string, int> a, KeyValuePair <string, int> b) { return(a.Value.CompareTo(b.Value)); });
foreach (KeyValuePair <string, int> kv in symOrder)
{
var attributes = symbolizers[kv.Key];
var symbolizer = kv.Key.Split('/')[1];
// Skip the magical * symbolizer which is used for universal properties
// which are bubbled up to Style elements intead of Symbolizer elements.
if (symbolizer == "*")
{
continue;
}
// Check if we have all required properties
string[] properties = attributes.Keys.ToArray();
string[] values = new string[properties.Length];
string missingProperty = null;
bool succ = cartoTranslator.HasRequiredProperties(symbolizer, properties, ref missingProperty);
if (!succ)
{
NodeLocation loc = attributes[missingProperty].Location;
throw new Exception(string.Format("A required property '{0}' is missing. Location: Index = {1} ; Source = {2}", missingProperty, loc.Index, loc.Source));
}
int i = 0;
foreach (string propName in attributes.Keys)
{
CartoRule cartoRule = attributes[propName];
values[i] = cartoRule.Value.GetValueAsString(env);
i++;
}
Symbolizer sym = cartoTranslator.ToSymbolizer(symbolizer, properties, values);
if (sym != null && sym.Enabled)
{
rule.Symbolizers.Add(sym);
}
}
}
/// <summary>
/// Creates rules
/// </summary>
/// <param name="style"></param>
/// <param name="def"></param>
/// <param name="env"></param>
/// <param name="existingFilters"></param>
/// <param name="cartoTranslator"></param>
private static void CreateRules(FeatureTypeStyle style, CartoDefinition def, Env env, Dictionary <string, int> existingFilters, ICartoTranslator cartoTranslator)
{
string filter = def.Filters.ToString();
if (!(existingFilters.ContainsKey(filter)))
{
existingFilters[filter] = 0x7FFFFF;
}
int available = 0x7FFFFF;
ZoomStruct zooms = new ZoomStruct();
zooms.Available = available;
NodeList <CartoRule> rules = def.Rules;
for (int i = 0; i < rules.Count; i++)
{
CartoRule cartoRule = rules[i];
zooms.Rule = cartoRule.Zoom;
if ((existingFilters[filter] & zooms.Rule) == 0)
{
continue;
}
while (((zooms.Current = zooms.Rule) & available) != 0)
{
Dictionary <string, Dictionary <string, CartoRule> > symbolizers = CollectSymbolizers(def, zooms, i, env, cartoTranslator);
if (symbolizers != null && symbolizers.Count > 0)
{
if ((existingFilters[filter] & zooms.Current) == 0)
{
continue;
}
int zoom = existingFilters[filter] & zooms.Current;
int startZoom = -1, endZoom = 0;
for (int zi = 0; zi <= 22; zi++)
{
if ((zoom & (1 << zi)) != 0)
{
if (startZoom == -1)
{
startZoom = zi;
}
endZoom = zi;
}
}
Rule rule = new Rule();
rule.Filter = ConvertUtility.ToFilter(def.Filters, cartoTranslator);
rule.Name = cartoRule.Instance;
if (startZoom > 0)
{
rule.MaxScale = ConvertUtility.ToScaleDenominator(startZoom);
}
if (endZoom > 0)
{
rule.MinScale = ConvertUtility.ToScaleDenominator(endZoom + 1);
}
CreateSymbolizers(rule, symbolizers, env, cartoTranslator);
existingFilters[filter] &= ~zooms.Current;
// Check whether the rule has at least one visible symbolizer
if (rule.Symbolizers.Count > 0 && rule.Symbolizers.Any(s => s.Enabled == true))
{
style.Rules.Add(rule);
}
}
}
}
//style.Rules.Sort(new RuleComparer());
}
/// <summary>
/// Creates <see cref="FeatureTypeStyle"/> object
/// </summary>
/// <param name="styleName"></param>
/// <param name="cartoStyle"></param>
/// <param name="env"></param>
/// <param name="cartoTranslator"></param>
/// <returns></returns>
private static FeatureTypeStyle CreateStyle(string styleName, CartoStyle cartoStyle, Env env, ICartoTranslator cartoTranslator)
{
FeatureTypeStyle style = new FeatureTypeStyle(styleName);
style.ProcessFeatureOnce = true;
List <CartoDefinition> definitions = cartoStyle.Definitions;
Dictionary <string, int> existingFilters = null;
List <string> imageFilters = new List <string>();
List <string> imageFiltersBuffer = new List <string>();
int k = 0;
for (int i = 0; i < definitions.Count; i++)
{
CartoDefinition def = definitions[i];
NodeList <CartoRule> rules = def.Rules;
for (int j = 0; j < rules.Count; j++)
{
CartoRule cartoRule = rules[j];
string ruleName = cartoRule.Name;
if (ruleName == "image-filters")
{
string filter = cartoRule.Value.ToString();
if (!imageFilters.Contains(filter))
{
style.ImageFiltersOptions.Filters.Add(cartoTranslator.ToImageFilter(filter));
style.ImageFiltersOptions.Enabled = true;
imageFilters.Add(filter);
}
k++;
}
else if (ruleName == "image-filters-inflate")
{
bool inflate = Convert.ToBoolean(cartoRule.Value.ToString());
if (inflate)
{
style.ImageFiltersOptions.Enabled = true;
}
k++;
}
else if (ruleName == "direct-image-filters")
{
string filter = cartoRule.Value.ToString();
if (!imageFiltersBuffer.Contains(filter))
{
style.ImageFiltersOptions.BufferFilters.Add(cartoTranslator.ToImageFilter(filter));
style.ImageFiltersOptions.Enabled = true;
imageFiltersBuffer.Add(filter);
}
k++;
}
else if (ruleName == "comp-op")
{
style.BlendingOptions.CompositingMode = cartoTranslator.ToCompositingMode(cartoRule.Value.Evaluate(env).ToString());
k++;
}
else if (ruleName == "opacity")
{
style.BlendingOptions.Opacity = (float)(cartoRule.Value.Evaluate(env) as Number).Value;
k++;
}
if (ruleName == "filter-mode")
{
string filterMode = cartoRule.Value.Evaluate(env).ToCSS(env);
if (string.Equals(filterMode, "all"))
{
style.ProcessFeatureOnce = false;
}
else if (string.Equals(filterMode, "first"))
{
style.ProcessFeatureOnce = true;
}
k++;
}
}
if (k < rules.Count)
{
if (existingFilters == null)
{
existingFilters = new Dictionary <string, int>();
}
CreateRules(style, def, env, existingFilters, cartoTranslator);
}
}
return(style);
}