static YGSize measureYGComponent()

in ComponentKit/LayoutComponents/CKFlexboxComponent.mm [288:321]

• 29 lines of code
• 8 McCabe index (conditional complexity)

static YGSize measureYGComponent(YGNodeRef node,
                                  float width,
                                  YGMeasureMode widthMode,
                                  float height,
                                  YGMeasureMode heightMode)
{
  CKFlexboxChildCachedLayout *cachedLayout = (__bridge CKFlexboxChildCachedLayout *)YGNodeGetContext(node);
  const CGSize minSize = {
    .width = (widthMode == YGMeasureModeExactly) ? width : 0,
    .height = (heightMode == YGMeasureModeExactly) ? height : 0
  };
  const CGSize maxSize = {
    .width = (widthMode == YGMeasureModeExactly || widthMode == YGMeasureModeAtMost) ? width : INFINITY,
    .height = (heightMode == YGMeasureModeExactly || heightMode == YGMeasureModeAtMost) ? height : INFINITY
  };
  // We cache measurements for the duration of single layout calculation of FlexboxComponent
  // ComponentKit and Yoga handle caching between calculations
  // We don't have any guarantees about when and how this will be called,
  // so we just cache the results to try to reuse them during final layout
  if (!CKYogaNodeCanUseCachedMeasurement(widthMode, width, heightMode, height, cachedLayout.widthMode, cachedLayout.width, cachedLayout.heightMode, cachedLayout.height, static_cast<float>(cachedLayout.componentLayout.size.width), static_cast<float>(cachedLayout.componentLayout.size.height), 0, 0, ckYogaDefaultConfig())) {
    CKComponent *component = cachedLayout.component;
    cachedLayout.componentLayout = CKComputeComponentLayout(component, convertCKSizeRangeToCKRepresentation(CKSizeRange(minSize, maxSize)), convertCGSizeToCKRepresentation(cachedLayout.parentSize));
    cachedLayout.width = width;
    cachedLayout.height = height;
    cachedLayout.widthMode = widthMode;
    cachedLayout.heightMode = heightMode;
  }
  const float componentLayoutWidth = static_cast<float>(cachedLayout.componentLayout.size.width);
  const float componentLayoutHeight = static_cast<float>(cachedLayout.componentLayout.size.height);

  const float measuredWidth = convertFloatToYogaRepresentation(componentLayoutWidth);
  const float measuredHeight = convertFloatToYogaRepresentation(componentLayoutHeight);
  return {measuredWidth, measuredHeight};
}