private void ResolveInheritance(VisualElement element)
{
var specifiedStyle = element.specifiedStyle;
var currentInheritedStyle = m_StyleMatchingContext.inheritedStyle;
element.inheritedStyle = currentInheritedStyle;
m_ResolveInheritData.CopyFrom(currentInheritedStyle);
if (specifiedStyle.color.specificity != StyleValueExtensions.UndefinedSpecificity)
{
m_ResolveInheritData.color = specifiedStyle.color;
}
if (specifiedStyle.unityFont.specificity != StyleValueExtensions.UndefinedSpecificity)
{
m_ResolveInheritData.font = specifiedStyle.unityFont;
}
if (specifiedStyle.fontSize.specificity != StyleValueExtensions.UndefinedSpecificity)
{
m_ResolveInheritData.fontSize = specifiedStyle.fontSize;
}
if (specifiedStyle.unityFontStyleAndWeight.specificity != StyleValueExtensions.UndefinedSpecificity)
{
m_ResolveInheritData.unityFontStyle = specifiedStyle.unityFontStyleAndWeight;
}
if (specifiedStyle.unityTextAlign.specificity != StyleValueExtensions.UndefinedSpecificity)
{
m_ResolveInheritData.unityTextAlign = specifiedStyle.unityTextAlign;
}
if (specifiedStyle.visibility.specificity != StyleValueExtensions.UndefinedSpecificity)
{
m_ResolveInheritData.visibility = specifiedStyle.visibility;
}
if (specifiedStyle.whiteSpace.specificity != StyleValueExtensions.UndefinedSpecificity)
{
m_ResolveInheritData.whiteSpace = specifiedStyle.whiteSpace;
}
if (!m_ResolveInheritData.Equals(currentInheritedStyle))
{
InheritedStylesData inheritData = null;
int hash = m_ResolveInheritData.GetHashCode();
if (!StyleCache.TryGetValue(hash, out inheritData))
{
inheritData = new InheritedStylesData(m_ResolveInheritData);
StyleCache.SetValue(hash, inheritData);
}
m_StyleMatchingContext.inheritedStyle = inheritData;
}
element.propagatedStyle = m_StyleMatchingContext.inheritedStyle;
}
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();
foreach (var record in matchingSelectors)
{
StyleRule rule = record.complexSelector.rule;
int specificity = record.complexSelector.specificity;
matchingRulesHash = (matchingRulesHash * 397) ^ rule.GetHashCode();
matchingRulesHash = (matchingRulesHash * 397) ^ specificity;
}
VisualElementStylesData resolvedStyles;
if (StyleCache.TryGetValue(matchingRulesHash, out resolvedStyles))
{
element.SetSharedStyles(resolvedStyles);
}
else
{
resolvedStyles = new VisualElementStylesData(isShared: true);
foreach (var record in matchingSelectors)
{
StylePropertyID[] propertyIDs = StyleSheetCache.GetPropertyIDs(record.sheet, record.complexSelector.ruleIndex);
resolvedStyles.ApplyRule(record.sheet, record.complexSelector.specificity, record.complexSelector.rule, propertyIDs);
}
resolvedStyles.ApplyLayoutValues();
StyleCache.SetValue(matchingRulesHash, resolvedStyles);
element.SetSharedStyles(resolvedStyles);
}
}
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);
}
}
private void ResolveInheritance(VisualElement element)
{
var specifiedStyle = element.specifiedStyle;
var currentInheritedStyle = m_StyleMatchingContext.inheritedStyle;
element.inheritedStyle = currentInheritedStyle;
m_ResolveInheritData.CopyFrom(currentInheritedStyle);
if (specifiedStyle.color.specificity != StyleValueExtensions.UndefinedSpecificity)
{
m_ResolveInheritData.color = specifiedStyle.color;
}
if (specifiedStyle.unityFont.specificity != StyleValueExtensions.UndefinedSpecificity)
{
m_ResolveInheritData.font = specifiedStyle.unityFont;
}
if (specifiedStyle.fontSize.specificity != StyleValueExtensions.UndefinedSpecificity)
{
// Only calculated value can be inherited
// Thus if it's a percentage the real value needs to be propagated
// See: https://developer.mozilla.org/en-US/docs/Web/CSS/percentage
m_ResolveInheritData.fontSize = new StyleLength(ComputedStyle.CalculatePixelFontSize(element));
m_ResolveInheritData.fontSize.specificity = specifiedStyle.fontSize.specificity;
}
if (specifiedStyle.unityFontStyleAndWeight.specificity != StyleValueExtensions.UndefinedSpecificity)
{
m_ResolveInheritData.unityFontStyle = specifiedStyle.unityFontStyleAndWeight;
}
if (specifiedStyle.unityTextAlign.specificity != StyleValueExtensions.UndefinedSpecificity)
{
m_ResolveInheritData.unityTextAlign = specifiedStyle.unityTextAlign;
}
if (specifiedStyle.visibility.specificity != StyleValueExtensions.UndefinedSpecificity)
{
m_ResolveInheritData.visibility = specifiedStyle.visibility;
}
if (specifiedStyle.whiteSpace.specificity != StyleValueExtensions.UndefinedSpecificity)
{
m_ResolveInheritData.whiteSpace = specifiedStyle.whiteSpace;
}
if (!m_ResolveInheritData.Equals(currentInheritedStyle))
{
InheritedStylesData inheritData = null;
int hash = m_ResolveInheritData.GetHashCode();
if (!StyleCache.TryGetValue(hash, out inheritData))
{
inheritData = new InheritedStylesData(m_ResolveInheritData);
StyleCache.SetValue(hash, inheritData);
}
m_StyleMatchingContext.inheritedStyle = inheritData;
}
element.propagatedStyle = m_StyleMatchingContext.inheritedStyle;
}
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);
}
}