LayoutState::LayoutState(LayoutBox& layoutObject, const LayoutSize& offset, LayoutUnit pageLogicalHeight, bool pageLogicalHeightChanged, bool containingBlockLogicalWidthChanged)
: m_containingBlockLogicalWidthChanged(containingBlockLogicalWidthChanged)
, m_next(layoutObject.view()->layoutState())
, m_layoutObject(layoutObject)
{
if (layoutObject.isLayoutFlowThread())
m_flowThread = toLayoutFlowThread(&layoutObject);
else if (!layoutObject.isOutOfFlowPositioned() && !layoutObject.isColumnSpanAll())
m_flowThread = m_next->flowThread();
else
m_flowThread = nullptr;
layoutObject.view()->pushLayoutState(*this);
bool fixed = layoutObject.isOutOfFlowPositioned() && layoutObject.style()->position() == FixedPosition;
if (fixed) {
// FIXME: This doesn't work correctly with transforms.
FloatPoint fixedOffset = layoutObject.view()->localToAbsolute(FloatPoint(), IsFixed);
m_layoutOffset = LayoutSize(fixedOffset.x(), fixedOffset.y()) + offset;
} else {
m_layoutOffset = m_next->m_layoutOffset + offset;
}
if (layoutObject.isOutOfFlowPositioned() && !fixed) {
if (LayoutObject* container = layoutObject.container()) {
if (container->style()->hasInFlowPosition() && container->isLayoutInline())
m_layoutOffset += toLayoutInline(container)->offsetForInFlowPositionedInline(layoutObject);
}
}
// If we establish a new page height, then cache the offset to the top of the first page.
// We can compare this later on to figure out what part of the page we're actually on,
if (pageLogicalHeight || layoutObject.isLayoutFlowThread()) {
m_pageLogicalHeight = pageLogicalHeight;
bool isFlipped = layoutObject.style()->isFlippedBlocksWritingMode();
m_pageOffset = LayoutSize(m_layoutOffset.width() + (!isFlipped ? layoutObject.borderLeft() + layoutObject.paddingLeft() : layoutObject.borderRight() + layoutObject.paddingRight()),
m_layoutOffset.height() + (!isFlipped ? layoutObject.borderTop() + layoutObject.paddingTop() : layoutObject.borderBottom() + layoutObject.paddingBottom()));
m_pageLogicalHeightChanged = pageLogicalHeightChanged;
m_isPaginated = true;
} else if (m_layoutObject.isSVG() && !m_layoutObject.isSVGRoot()) {
// Pagination inside SVG is not allowed.
m_flowThread = nullptr;
m_pageLogicalHeightChanged = false;
m_isPaginated = false;
} else {
// If we don't establish a new page height, then propagate the old page height and offset down.
m_pageLogicalHeight = m_next->m_pageLogicalHeight;
m_pageLogicalHeightChanged = m_next->m_pageLogicalHeightChanged;
m_pageOffset = m_next->m_pageOffset;
// Disable pagination for objects we don't support. For now this includes overflow:scroll/auto, inline blocks and
// writing mode roots.
if (layoutObject.isUnsplittableForPagination()) {
m_flowThread = nullptr;
m_pageLogicalHeight = 0;
m_isPaginated = false;
} else {
m_isPaginated = m_pageLogicalHeight || m_flowThread;
}
}
// FIXME: <http://bugs.webkit.org/show_bug.cgi?id=13443> Apply control clip if present.
}
inline LayoutUnit borderAndPaddingBeforeInWritingMode(const LayoutBox& layoutBox, WritingMode writingMode)
{
switch (writingMode) {
case TopToBottomWritingMode: return layoutBox.borderTop() + layoutBox.paddingTop();
case LeftToRightWritingMode: return layoutBox.borderLeft() + layoutBox.paddingLeft();
case RightToLeftWritingMode: return layoutBox.borderRight() + layoutBox.paddingRight();
}
ASSERT_NOT_REACHED();
return layoutBox.borderAndPaddingBefore();
}
inline LayoutUnit borderAndPaddingStartWithStyleForWritingMode(const LayoutBox& layoutBox, const ComputedStyle* style)
{
if (style->isHorizontalWritingMode()) {
if (style->isLeftToRightDirection())
return layoutBox.borderLeft() + layoutBox.paddingLeft();
return layoutBox.borderRight() + layoutBox.paddingRight();
}
if (style->isLeftToRightDirection())
return layoutBox.borderTop() + layoutBox.paddingTop();
return layoutBox.borderBottom() + layoutBox.paddingBottom();
}
void ThemePainterDefault::setupMenuListArrow(
const LayoutBox& box,
const IntRect& rect,
WebThemeEngine::ExtraParams& extraParams) {
const int left = rect.x() + box.borderLeft();
const int right = rect.x() + rect.width() - box.borderRight();
const int middle = rect.y() + rect.height() / 2;
extraParams.menuList.arrowY = middle;
float arrowBoxWidth = m_theme.clampedMenuListArrowPaddingSize(
box.frameView()->getHostWindow(), box.styleRef());
float arrowScaleFactor = arrowBoxWidth / m_theme.scrollbarThicknessInDIP();
if (useMockTheme()) {
// The size and position of the drop-down button is different between
// the mock theme and the regular aura theme.
// Padding inside the arrowBox.
float extraPadding = 2 * arrowScaleFactor;
float arrowSize =
std::min(arrowBoxWidth,
static_cast<float>(rect.height() - box.borderTop() -
box.borderBottom())) -
2 * extraPadding;
// |arrowX| is the middle position for mock theme engine.
extraParams.menuList.arrowX =
(box.styleRef().direction() == RTL)
? rect.x() + extraPadding + (arrowSize / 2)
: right - (arrowSize / 2) - extraPadding;
extraParams.menuList.arrowSize = arrowSize;
} else {
// TODO(tkent): This should be 7.0 to match scroll bar buttons.
float arrowSize = 6.0 * arrowScaleFactor;
// Put the 6px arrow at the center of paddingForArrow area.
// |arrowX| is the left position for Aura theme engine.
extraParams.menuList.arrowX = (box.styleRef().direction() == RTL)
? left + (arrowBoxWidth - arrowSize) / 2
: right - (arrowBoxWidth + arrowSize) / 2;
extraParams.menuList.arrowSize = arrowSize;
}
extraParams.menuList.arrowColor = box.resolveColor(CSSPropertyColor).rgb();
}