public StyleMatchingContext(Action <VisualElement, MatchResultInfo> processResult)
{
styleSheetStack = new List <StyleSheet>();
variableContext = StyleVariableContext.none;
currentElement = null;
this.processResult = processResult;
}
public void InsertRange(int index, StyleVariableContext other)
{
if (other.m_Variables.Count > 0)
{
m_DirtyVariableHash = true;
m_Variables.InsertRange(index, other.m_Variables);
}
}
public void AddInitialRange(StyleVariableContext other)
{
if (other.m_Variables.Count > 0)
{
Debug.Assert(m_Variables.Count == 0);
m_VariableHash = other.m_VariableHash;
m_Variables.AddRange(other.m_Variables);
}
}
public void AddInitialRange(StyleVariableContext other)
{
bool flag = other.m_Variables.Count > 0;
if (flag)
{
Debug.Assert(this.m_Variables.Count == 0);
this.m_VariableHash = other.m_VariableHash;
this.m_Variables.AddRange(other.m_Variables);
this.m_SortedHash.AddRange(other.m_SortedHash);
}
}
public StyleVariableContext(StyleVariableContext other)
{
m_Variables = new List <StyleVariable>(other.m_Variables);
}
public static void SetValue(int hash, StyleVariableContext data)
{
s_StyleVariableContextCache[hash] = data;
}
public static bool TryGetValue(int hash, out StyleVariableContext data)
{
return(s_StyleVariableContextCache.TryGetValue(hash, out data));
}
void ProcessMatchedRules(VisualElement element, List <SelectorMatchRecord> matchingSelectors)
{
matchingSelectors.Sort((a, b) => SelectorMatchRecord.Compare(a, b));
Int64 matchingRulesHash = element.fullTypeName.GetHashCode();
// Let current DPI contribute to the hash so cache is invalidated when this changes
matchingRulesHash = (matchingRulesHash * 397) ^ currentPixelsPerPoint.GetHashCode();
int oldVariablesHash = m_StyleMatchingContext.variableContext.GetVariableHash();
int customPropertiesCount = 0;
foreach (var record in matchingSelectors)
{
StyleRule rule = record.complexSelector.rule;
int specificity = record.complexSelector.specificity;
matchingRulesHash = (matchingRulesHash * 397) ^ rule.GetHashCode();
matchingRulesHash = (matchingRulesHash * 397) ^ specificity;
if (rule.customPropertiesCount > 0)
{
customPropertiesCount += rule.customPropertiesCount;
ProcessMatchedVariables(record.sheet, rule);
}
}
var parent = element.hierarchy.parent;
int inheritedStyleHash = parent != null ? parent.inheritedStylesHash : 0;
matchingRulesHash = (matchingRulesHash * 397) ^ inheritedStyleHash;
int variablesHash = oldVariablesHash;
if (customPropertiesCount > 0)
{
// Element defines new variables, add the parents variables at the beginning of the processing context
m_ProcessVarContext.InsertRange(0, m_StyleMatchingContext.variableContext);
variablesHash = m_ProcessVarContext.GetVariableHash();
}
matchingRulesHash = (matchingRulesHash * 397) ^ variablesHash;
if (oldVariablesHash != variablesHash)
{
StyleVariableContext ctx;
if (!StyleCache.TryGetValue(variablesHash, out ctx))
{
ctx = new StyleVariableContext(m_ProcessVarContext);
StyleCache.SetValue(variablesHash, ctx);
}
m_StyleMatchingContext.variableContext = ctx;
}
element.variableContext = m_StyleMatchingContext.variableContext;
m_ProcessVarContext.Clear();
ComputedStyle resolvedStyles;
if (StyleCache.TryGetValue(matchingRulesHash, out resolvedStyles))
{
element.SetSharedStyles(resolvedStyles);
}
else
{
var parentStyle = parent?.computedStyle;
resolvedStyles = ComputedStyle.Create(parentStyle, true);
float dpiScaling = element.scaledPixelsPerPoint;
foreach (var record in matchingSelectors)
{
m_StylePropertyReader.SetContext(record.sheet, record.complexSelector, m_StyleMatchingContext.variableContext, dpiScaling);
resolvedStyles.ApplyProperties(m_StylePropertyReader, parentStyle);
}
resolvedStyles.FinalizeApply(parentStyle);
StyleCache.SetValue(matchingRulesHash, resolvedStyles);
element.SetSharedStyles(resolvedStyles);
}
}
void ProcessMatchedRules(VisualElement element, List <SelectorMatchRecord> matchingSelectors)
{
matchingSelectors.Sort(SelectorMatchRecord.Compare);
Int64 matchingRulesHash = element.fullTypeName.GetHashCode();
// Let current DPI contribute to the hash so cache is invalidated when this changes
matchingRulesHash = (matchingRulesHash * 397) ^ currentPixelsPerPoint.GetHashCode();
int oldVariablesHash = m_StyleMatchingContext.variableContext.GetVariableHash();
int customPropertiesCount = 0;
foreach (var record in matchingSelectors)
{
StyleRule rule = record.complexSelector.rule;
int specificity = record.complexSelector.specificity;
matchingRulesHash = (matchingRulesHash * 397) ^ rule.GetHashCode();
matchingRulesHash = (matchingRulesHash * 397) ^ specificity;
if (rule.customPropertiesCount > 0)
{
customPropertiesCount += rule.customPropertiesCount;
ProcessMatchedVariables(record.sheet, rule);
}
}
int variablesHash = customPropertiesCount > 0 ? m_ProcessVarContext.GetVariableHash() : oldVariablesHash;
matchingRulesHash = (matchingRulesHash * 397) ^ variablesHash;
if (oldVariablesHash != variablesHash)
{
StyleVariableContext ctx;
if (!StyleCache.TryGetValue(variablesHash, out ctx))
{
ctx = new StyleVariableContext(m_ProcessVarContext);
StyleCache.SetValue(variablesHash, ctx);
}
m_StyleMatchingContext.variableContext = ctx;
}
element.variableContext = m_StyleMatchingContext.variableContext;
VisualElementStylesData resolvedStyles;
if (StyleCache.TryGetValue(matchingRulesHash, out resolvedStyles))
{
element.SetSharedStyles(resolvedStyles);
}
else
{
resolvedStyles = new VisualElementStylesData(isShared: true);
foreach (var record in matchingSelectors)
{
m_StylePropertyReader.SetContext(record.sheet, record.complexSelector, m_StyleMatchingContext.variableContext);
resolvedStyles.ApplyProperties(m_StylePropertyReader, m_StyleMatchingContext.inheritedStyle);
}
resolvedStyles.ApplyLayoutValues();
StyleCache.SetValue(matchingRulesHash, resolvedStyles);
element.SetSharedStyles(resolvedStyles);
}
}
public StyleVariableContext(StyleVariableContext other)
{
this.m_Variables = new List <StyleVariable>(other.m_Variables);
this.m_VariableHash = other.m_VariableHash;
this.m_SortedHash = new List <int>(other.m_SortedHash);
}