LayoutRect RenderMultiColumnSet::columnRectAt(unsigned index) const
{
LayoutUnit colLogicalWidth = computedColumnWidth();
LayoutUnit colLogicalHeight = computedColumnHeight();
LayoutUnit colLogicalTop = borderAndPaddingBefore();
LayoutUnit colLogicalLeft = borderAndPaddingLogicalLeft();
LayoutUnit colGap = columnGap();
RenderBlockFlow* parentFlow = toRenderBlockFlow(parent());
bool progressionReversed = parentFlow->multiColumnFlowThread()->progressionIsReversed();
bool progressionInline = parentFlow->multiColumnFlowThread()->progressionIsInline();
if (progressionInline) {
if (style().isLeftToRightDirection() ^ progressionReversed)
colLogicalLeft += index * (colLogicalWidth + colGap);
else
colLogicalLeft += contentLogicalWidth() - colLogicalWidth - index * (colLogicalWidth + colGap);
} else {
if (!progressionReversed)
colLogicalTop += index * (colLogicalHeight + colGap);
else
colLogicalTop += contentLogicalHeight() - colLogicalHeight - index * (colLogicalHeight + colGap);
}
if (isHorizontalWritingMode())
return LayoutRect(colLogicalLeft, colLogicalTop, colLogicalWidth, colLogicalHeight);
return LayoutRect(colLogicalTop, colLogicalLeft, colLogicalHeight, colLogicalWidth);
}
void RenderMultiColumnSet::paintColumnRules(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (paintInfo.context->paintingDisabled())
return;
RenderStyle* blockStyle = toRenderMultiColumnBlock(parent())->style();
const Color& ruleColor = blockStyle->visitedDependentColor(CSSPropertyWebkitColumnRuleColor);
bool ruleTransparent = blockStyle->columnRuleIsTransparent();
EBorderStyle ruleStyle = blockStyle->columnRuleStyle();
LayoutUnit ruleThickness = blockStyle->columnRuleWidth();
LayoutUnit colGap = columnGap();
bool renderRule = ruleStyle > BHIDDEN && !ruleTransparent && ruleThickness <= colGap;
if (!renderRule)
return;
unsigned colCount = columnCount();
if (colCount <= 1)
return;
bool antialias = shouldAntialiasLines(paintInfo.context);
bool leftToRight = style()->isLeftToRightDirection();
LayoutUnit currLogicalLeftOffset = leftToRight ? ZERO_LAYOUT_UNIT : contentLogicalWidth();
LayoutUnit ruleAdd = borderAndPaddingLogicalLeft();
LayoutUnit ruleLogicalLeft = leftToRight ? ZERO_LAYOUT_UNIT : contentLogicalWidth();
LayoutUnit inlineDirectionSize = computedColumnWidth();
BoxSide boxSide = isHorizontalWritingMode()
? leftToRight ? BSLeft : BSRight
: leftToRight ? BSTop : BSBottom;
for (unsigned i = 0; i < colCount; i++) {
// Move to the next position.
if (leftToRight) {
ruleLogicalLeft += inlineDirectionSize + colGap / 2;
currLogicalLeftOffset += inlineDirectionSize + colGap;
} else {
ruleLogicalLeft -= (inlineDirectionSize + colGap / 2);
currLogicalLeftOffset -= (inlineDirectionSize + colGap);
}
// Now paint the column rule.
if (i < colCount - 1) {
LayoutUnit ruleLeft = isHorizontalWritingMode() ? paintOffset.x() + ruleLogicalLeft - ruleThickness / 2 + ruleAdd : paintOffset.x() + borderLeft() + paddingLeft();
LayoutUnit ruleRight = isHorizontalWritingMode() ? ruleLeft + ruleThickness : ruleLeft + contentWidth();
LayoutUnit ruleTop = isHorizontalWritingMode() ? paintOffset.y() + borderTop() + paddingTop() : paintOffset.y() + ruleLogicalLeft - ruleThickness / 2 + ruleAdd;
LayoutUnit ruleBottom = isHorizontalWritingMode() ? ruleTop + contentHeight() : ruleTop + ruleThickness;
IntRect pixelSnappedRuleRect = pixelSnappedIntRectFromEdges(ruleLeft, ruleTop, ruleRight, ruleBottom);
drawLineForBoxSide(paintInfo.context, pixelSnappedRuleRect.x(), pixelSnappedRuleRect.y(), pixelSnappedRuleRect.maxX(), pixelSnappedRuleRect.maxY(), boxSide, ruleColor, ruleStyle, 0, 0, antialias);
}
ruleLogicalLeft = currLogicalLeftOffset;
}
}
LayoutRect RenderMultiColumnSet::columnRectAt(unsigned index) const
{
LayoutUnit colLogicalWidth = computedColumnWidth();
LayoutUnit colLogicalHeight = computedColumnHeight();
LayoutUnit colLogicalTop = borderBefore() + paddingBefore();
LayoutUnit colLogicalLeft = borderAndPaddingLogicalLeft();
int colGap = columnGap();
if (style()->isLeftToRightDirection())
colLogicalLeft += index * (colLogicalWidth + colGap);
else
colLogicalLeft += contentLogicalWidth() - colLogicalWidth - index * (colLogicalWidth + colGap);
if (isHorizontalWritingMode())
return LayoutRect(colLogicalLeft, colLogicalTop, colLogicalWidth, colLogicalHeight);
return LayoutRect(colLogicalTop, colLogicalLeft, colLogicalHeight, colLogicalWidth);
}