Exemplo n.º 1
0
LayoutUnit FloatingObjects::lowestFloatLogicalBottom(FloatingObject::Type floatType)
{
    bool isInHorizontalWritingMode = m_horizontalWritingMode;
    if (floatType != FloatingObject::FloatLeftRight) {
        if (hasLowestFloatLogicalBottomCached(isInHorizontalWritingMode, floatType))
            return getCachedlowestFloatLogicalBottom(floatType);
    } else {
        if (hasLowestFloatLogicalBottomCached(isInHorizontalWritingMode, FloatingObject::FloatLeft) && hasLowestFloatLogicalBottomCached(isInHorizontalWritingMode, FloatingObject::FloatRight)) {
            return std::max(getCachedlowestFloatLogicalBottom(FloatingObject::FloatLeft),
                getCachedlowestFloatLogicalBottom(FloatingObject::FloatRight));
        }
    }

    LayoutUnit lowestFloatBottom = 0;
    const FloatingObjectSet& floatingObjectSet = set();
    FloatingObjectSetIterator end = floatingObjectSet.end();
    if (floatType == FloatingObject::FloatLeftRight) {
        FloatingObject* lowestFloatingObjectLeft = nullptr;
        FloatingObject* lowestFloatingObjectRight = nullptr;
        LayoutUnit lowestFloatBottomLeft = 0;
        LayoutUnit lowestFloatBottomRight = 0;
        for (FloatingObjectSetIterator it = floatingObjectSet.begin(); it != end; ++it) {
            FloatingObject& floatingObject = *it->get();
            if (floatingObject.isPlaced()) {
                FloatingObject::Type curType = floatingObject.type();
                LayoutUnit curFloatLogicalBottom = m_layoutObject->logicalBottomForFloat(floatingObject);
                if (curType & FloatingObject::FloatLeft && curFloatLogicalBottom > lowestFloatBottomLeft) {
                    lowestFloatBottomLeft = curFloatLogicalBottom;
                    lowestFloatingObjectLeft = &floatingObject;
                }
                if (curType & FloatingObject::FloatRight && curFloatLogicalBottom > lowestFloatBottomRight) {
                    lowestFloatBottomRight = curFloatLogicalBottom;
                    lowestFloatingObjectRight = &floatingObject;
                }
            }
        }
        lowestFloatBottom = std::max(lowestFloatBottomLeft, lowestFloatBottomRight);
        setCachedLowestFloatLogicalBottom(isInHorizontalWritingMode, FloatingObject::FloatLeft, lowestFloatingObjectLeft);
        setCachedLowestFloatLogicalBottom(isInHorizontalWritingMode, FloatingObject::FloatRight, lowestFloatingObjectRight);
    } else {
        FloatingObject* lowestFloatingObject = nullptr;
        for (FloatingObjectSetIterator it = floatingObjectSet.begin(); it != end; ++it) {
            FloatingObject& floatingObject = *it->get();
            if (floatingObject.isPlaced() && floatingObject.type() == floatType) {
                if (m_layoutObject->logicalBottomForFloat(floatingObject) > lowestFloatBottom) {
                    lowestFloatingObject = &floatingObject;
                    lowestFloatBottom = m_layoutObject->logicalBottomForFloat(floatingObject);
                }
            }
        }
        setCachedLowestFloatLogicalBottom(isInHorizontalWritingMode, floatType, lowestFloatingObject);
    }

    return lowestFloatBottom;
}
Exemplo n.º 2
0
void FloatingObjects::computePlacedFloatsTree() {
  ASSERT(!m_placedFloatsTree.isInitialized());
  if (m_set.isEmpty())
    return;
  m_placedFloatsTree.initIfNeeded(m_layoutObject->view()->intervalArena());
  FloatingObjectSetIterator it = m_set.begin();
  FloatingObjectSetIterator end = m_set.end();
  for (; it != end; ++it) {
    FloatingObject& floatingObject = *it->get();
    if (floatingObject.isPlaced())
      m_placedFloatsTree.add(intervalForFloatingObject(floatingObject));
  }
}