Esempi in C++ (Cpp) per RenderBox::layoutOverflowRect

Esempio n. 1

File: RenderMarquee.cpp Progetto: Channely/know-your-chrome

int RenderMarquee::computePosition(EMarqueeDirection dir, bool stopAtContentEdge)
{
    RenderBox* box = m_layer->renderBox();
    ASSERT(box);
    RenderStyle* s = box->style();
    if (isHorizontal()) {
        bool ltr = s->isLeftToRightDirection();
        LayoutUnit clientWidth = box->clientWidth();
        LayoutUnit contentWidth = ltr ? box->maxPreferredLogicalWidth() : box->minPreferredLogicalWidth();
        if (ltr)
            contentWidth += (box->paddingRight() - box->borderLeft());
        else {
            contentWidth = box->width() - contentWidth;
            contentWidth += (box->paddingLeft() - box->borderRight());
        }
        if (dir == MRIGHT) {
            if (stopAtContentEdge)
                return max<LayoutUnit>(0, ltr ? (contentWidth - clientWidth) : (clientWidth - contentWidth));
            else
                return ltr ? contentWidth : clientWidth;
        }
        else {
            if (stopAtContentEdge)
                return min<LayoutUnit>(0, ltr ? (contentWidth - clientWidth) : (clientWidth - contentWidth));
            else
                return ltr ? -clientWidth : -contentWidth;
        }
    }
    else {
        int contentHeight = box->layoutOverflowRect().maxY() - box->borderTop() + box->paddingBottom();
        int clientHeight = box->clientHeight();
        if (dir == MUP) {
            if (stopAtContentEdge)
                 return min(contentHeight - clientHeight, 0);
            else
                return -clientHeight;
        }
        else {
            if (stopAtContentEdge)
                return max(contentHeight - clientHeight, 0);
            else 
                return contentHeight;
        }
    }    
}