BoxClipper::BoxClipper(const LayoutBox& box, const PaintInfo& paintInfo, const LayoutPoint& accumulatedOffset, ContentsClipBehavior contentsClipBehavior)
: m_box(box)
, m_paintInfo(paintInfo)
, m_clipType(DisplayItem::UninitializedType)
{
ASSERT(m_paintInfo.phase != PaintPhaseSelfBlockBackgroundOnly && m_paintInfo.phase != PaintPhaseSelfOutlineOnly);
if (m_paintInfo.phase == PaintPhaseMask)
return;
if (RuntimeEnabledFeatures::slimmingPaintV2Enabled()) {
const auto* objectProperties = m_box.objectPaintProperties();
if (objectProperties && objectProperties->overflowClip()) {
PaintChunkProperties properties(paintInfo.context.getPaintController().currentPaintChunkProperties());
properties.clip = objectProperties->overflowClip();
m_scopedClipProperty.emplace(paintInfo.context.getPaintController(), properties);
}
return;
}
bool isControlClip = m_box.hasControlClip();
bool isOverflowOrContainmentClip = (m_box.hasOverflowClip() && !m_box.layer()->isSelfPaintingLayer())
|| m_box.style()->containsPaint();
if (!isControlClip && !isOverflowOrContainmentClip)
return;
LayoutRect clipRect = isControlClip ? m_box.controlClipRect(accumulatedOffset) : m_box.overflowClipRect(accumulatedOffset);
FloatRoundedRect clipRoundedRect(0, 0, 0, 0);
bool hasBorderRadius = m_box.style()->hasBorderRadius();
if (hasBorderRadius)
clipRoundedRect = m_box.style()->getRoundedInnerBorderFor(LayoutRect(accumulatedOffset, m_box.size()));
// Selection does not affect visual overflow, so this optimization is invalid if selection
// is present.
if (contentsClipBehavior == SkipContentsClipIfPossible && box.getSelectionState() == SelectionNone) {
LayoutRect contentsVisualOverflow = m_box.contentsVisualOverflowRect();
if (contentsVisualOverflow.isEmpty())
return;
LayoutRect conservativeClipRect = clipRect;
if (hasBorderRadius)
conservativeClipRect.intersect(LayoutRect(clipRoundedRect.radiusCenterRect()));
conservativeClipRect.moveBy(-accumulatedOffset);
if (m_box.hasLayer())
conservativeClipRect.move(m_box.scrolledContentOffset());
if (conservativeClipRect.contains(contentsVisualOverflow))
return;
}
if (!m_paintInfo.context.getPaintController().displayItemConstructionIsDisabled()) {
m_clipType = m_paintInfo.displayItemTypeForClipping();
Vector<FloatRoundedRect> roundedRects;
if (hasBorderRadius)
roundedRects.append(clipRoundedRect);
m_paintInfo.context.getPaintController().createAndAppend<ClipDisplayItem>(m_box, m_clipType, pixelSnappedIntRect(clipRect), roundedRects);
}
}
BoxClipper::BoxClipper(const LayoutBox& box, const PaintInfo& paintInfo, const LayoutPoint& accumulatedOffset, ContentsClipBehavior contentsClipBehavior)
: m_box(box)
, m_paintInfo(paintInfo)
, m_clipType(DisplayItem::UninitializedType)
{
if (m_paintInfo.phase == PaintPhaseSelfBlockBackground || m_paintInfo.phase == PaintPhaseSelfOutline || m_paintInfo.phase == PaintPhaseMask)
return;
bool isControlClip = m_box.hasControlClip();
bool isOverflowOrContainmentClip = (m_box.hasOverflowClip() && !m_box.layer()->isSelfPaintingLayer())
|| m_box.style()->containsPaint();
if (!isControlClip && !isOverflowOrContainmentClip)
return;
LayoutRect clipRect = isControlClip ? m_box.controlClipRect(accumulatedOffset) : m_box.overflowClipRect(accumulatedOffset);
FloatRoundedRect clipRoundedRect(0, 0, 0, 0);
bool hasBorderRadius = m_box.style()->hasBorderRadius();
if (hasBorderRadius)
clipRoundedRect = m_box.style()->getRoundedInnerBorderFor(LayoutRect(accumulatedOffset, m_box.size()));
if (contentsClipBehavior == SkipContentsClipIfPossible) {
LayoutRect contentsVisualOverflow = m_box.contentsVisualOverflowRect();
if (contentsVisualOverflow.isEmpty())
return;
LayoutRect conservativeClipRect = clipRect;
if (hasBorderRadius)
conservativeClipRect.intersect(LayoutRect(clipRoundedRect.radiusCenterRect()));
conservativeClipRect.moveBy(-accumulatedOffset);
if (m_box.hasLayer())
conservativeClipRect.move(m_box.scrolledContentOffset());
if (conservativeClipRect.contains(contentsVisualOverflow))
return;
}
if (!m_paintInfo.context.paintController().displayItemConstructionIsDisabled()) {
m_clipType = m_paintInfo.displayItemTypeForClipping();
Vector<FloatRoundedRect> roundedRects;
if (hasBorderRadius)
roundedRects.append(clipRoundedRect);
m_paintInfo.context.paintController().createAndAppend<ClipDisplayItem>(m_box, m_clipType, pixelSnappedIntRect(clipRect), roundedRects);
}
}
