C++ (Cpp) computeControlHeight示例

示例#1

void RenderTextControl::computeLogicalHeight()
{
    HTMLElement* innerText = innerTextElement();
    ASSERT(innerText);
    RenderBox* innerTextBox = innerText->renderBox();
    LayoutUnit nonContentHeight = innerTextBox->borderAndPaddingHeight() + innerTextBox->marginHeight();
    setHeight(computeControlHeight(innerTextBox->lineHeight(true, HorizontalLine, PositionOfInteriorLineBoxes), nonContentHeight) + borderAndPaddingHeight());

    // We are able to have a horizontal scrollbar if the overflow style is scroll, or if its auto and there's no word wrap.
    if (style()->overflowX() == OSCROLL ||  (style()->overflowX() == OAUTO && innerText->renderer()->style()->wordWrap() == NormalWordWrap))
        setHeight(height() + scrollbarThickness());

    RenderBlock::computeLogicalHeight();
}

示例#2

void RenderTextControl::computeLogicalHeight(LayoutUnit logicalHeight, LayoutUnit logicalTop, LogicalExtentComputedValues& computedValues) const
{
    HTMLElement* innerText = innerTextElement();
    ASSERT(innerText);
    if (RenderBox* innerTextBox = innerText->renderBox()) {
        LayoutUnit nonContentHeight = innerTextBox->borderAndPaddingHeight() + innerTextBox->marginHeight();
        logicalHeight = computeControlHeight(innerTextBox->lineHeight(true, HorizontalLine, PositionOfInteriorLineBoxes), nonContentHeight) + borderAndPaddingHeight();

        // We are able to have a horizontal scrollbar if the overflow style is scroll, or if its auto and there's no word wrap.
        if (style()->overflowX() == OSCROLL ||  (style()->overflowX() == OAUTO && innerText->renderer()->style()->overflowWrap() == NormalOverflowWrap))
            logicalHeight += scrollbarThickness();
    }

    RenderBox::computeLogicalHeight(logicalHeight, logicalTop, computedValues);
}