void HTMLBodyElement::setScrollTop(int scrollTop)
{
    Document& document = this->document();
    document.updateLayoutIgnorePendingStylesheets();

    if (RuntimeEnabledFeatures::scrollTopLeftInteropEnabled()) {
        RenderBox* render = renderBox();
        if (!render)
            return;
        if (render->hasOverflowClip()) {
            // FIXME: Investigate how are other browsers casting to int (rounding, ceiling, ...).
            render->setScrollTop(static_cast<int>(scrollTop * render->style()->effectiveZoom()));
            return;
        }
        if (!document.inQuirksMode())
            return;
    }

    LocalFrame* frame = document.frame();
    if (!frame)
        return;
    FrameView* view = frame->view();
    if (!view)
        return;
    view->setScrollPosition(IntPoint(view->scrollX(), static_cast<int>(scrollTop * frame->pageZoomFactor())));
}
int HTMLBodyElement::scrollTop()
{
    Document& document = this->document();
    document.updateLayoutIgnorePendingStylesheets();

    if (RuntimeEnabledFeatures::scrollTopLeftInteropEnabled()) {
        RenderBox* render = renderBox();
        if (!render)
            return 0;
        if (render->hasOverflowClip())
            return adjustForAbsoluteZoom(render->scrollTop(), render);
        if (!document.inQuirksMode())
            return 0;
    }

    FrameView* view = document.view();
    return view ? adjustForZoom(view->scrollY(), &document) : 0;
}
Beispiel #3
0
double HTMLBodyElement::scrollTop()
{
    Document& document = this->document();
    document.updateLayoutIgnorePendingStylesheets();

    if (RuntimeEnabledFeatures::scrollTopLeftInteropEnabled()) {
        RenderBox* render = renderBox();
        if (!render)
            return 0;
        if (render->hasOverflowClip())
            return adjustLayoutUnitForAbsoluteZoom(render->scrollTop(), *render);
        if (!document.inQuirksMode())
            return 0;
    }

    if (FrameView* view = document.view())
        return adjustScrollForAbsoluteZoom(view->scrollY(), document.frame()->pageZoomFactor());
    return 0;
}
Beispiel #4
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void RenderListItem::positionListMarker()
{
    if (m_marker && m_marker->parent()->isBox() && !m_marker->isInside() && m_marker->inlineBoxWrapper()) {
        LayoutUnit markerOldLogicalLeft = m_marker->logicalLeft();
        LayoutUnit blockOffset = 0;
        LayoutUnit lineOffset = 0;
        for (RenderBox* o = m_marker->parentBox(); o != this; o = o->parentBox()) {
            blockOffset += o->logicalTop();
            lineOffset += o->logicalLeft();
        }

        bool adjustOverflow = false;
        LayoutUnit markerLogicalLeft;
        RootInlineBox& root = m_marker->inlineBoxWrapper()->root();
        bool hitSelfPaintingLayer = false;

        LayoutUnit lineTop = root.lineTop();
        LayoutUnit lineBottom = root.lineBottom();

        // FIXME: Need to account for relative positioning in the layout overflow.
        if (style()->isLeftToRightDirection()) {
            LayoutUnit leftLineOffset = logicalLeftOffsetForLine(blockOffset, logicalLeftOffsetForLine(blockOffset, false), false);
            markerLogicalLeft = leftLineOffset - lineOffset - paddingStart() - borderStart() + m_marker->marginStart();
            m_marker->inlineBoxWrapper()->adjustLineDirectionPosition((markerLogicalLeft - markerOldLogicalLeft).toFloat());
            for (InlineFlowBox* box = m_marker->inlineBoxWrapper()->parent(); box; box = box->parent()) {
                LayoutRect newLogicalVisualOverflowRect = box->logicalVisualOverflowRect(lineTop, lineBottom);
                LayoutRect newLogicalLayoutOverflowRect = box->logicalLayoutOverflowRect(lineTop, lineBottom);
                if (markerLogicalLeft < newLogicalVisualOverflowRect.x() && !hitSelfPaintingLayer) {
                    newLogicalVisualOverflowRect.setWidth(newLogicalVisualOverflowRect.maxX() - markerLogicalLeft);
                    newLogicalVisualOverflowRect.setX(markerLogicalLeft);
                    if (box == root)
                        adjustOverflow = true;
                }
                if (markerLogicalLeft < newLogicalLayoutOverflowRect.x()) {
                    newLogicalLayoutOverflowRect.setWidth(newLogicalLayoutOverflowRect.maxX() - markerLogicalLeft);
                    newLogicalLayoutOverflowRect.setX(markerLogicalLeft);
                    if (box == root)
                        adjustOverflow = true;
                }
                box->setOverflowFromLogicalRects(newLogicalLayoutOverflowRect, newLogicalVisualOverflowRect, lineTop, lineBottom);
                if (box->boxModelObject()->hasSelfPaintingLayer())
                    hitSelfPaintingLayer = true;
            }
        } else {
            LayoutUnit rightLineOffset = logicalRightOffsetForLine(blockOffset, logicalRightOffsetForLine(blockOffset, false), false);
            markerLogicalLeft = rightLineOffset - lineOffset + paddingStart() + borderStart() + m_marker->marginEnd();
            m_marker->inlineBoxWrapper()->adjustLineDirectionPosition((markerLogicalLeft - markerOldLogicalLeft).toFloat());
            for (InlineFlowBox* box = m_marker->inlineBoxWrapper()->parent(); box; box = box->parent()) {
                LayoutRect newLogicalVisualOverflowRect = box->logicalVisualOverflowRect(lineTop, lineBottom);
                LayoutRect newLogicalLayoutOverflowRect = box->logicalLayoutOverflowRect(lineTop, lineBottom);
                if (markerLogicalLeft + m_marker->logicalWidth() > newLogicalVisualOverflowRect.maxX() && !hitSelfPaintingLayer) {
                    newLogicalVisualOverflowRect.setWidth(markerLogicalLeft + m_marker->logicalWidth() - newLogicalVisualOverflowRect.x());
                    if (box == root)
                        adjustOverflow = true;
                }
                if (markerLogicalLeft + m_marker->logicalWidth() > newLogicalLayoutOverflowRect.maxX()) {
                    newLogicalLayoutOverflowRect.setWidth(markerLogicalLeft + m_marker->logicalWidth() - newLogicalLayoutOverflowRect.x());
                    if (box == root)
                        adjustOverflow = true;
                }
                box->setOverflowFromLogicalRects(newLogicalLayoutOverflowRect, newLogicalVisualOverflowRect, lineTop, lineBottom);

                if (box->boxModelObject()->hasSelfPaintingLayer())
                    hitSelfPaintingLayer = true;
            }
        }

        if (adjustOverflow) {
            LayoutRect markerRect(LayoutPoint(markerLogicalLeft + lineOffset, blockOffset), m_marker->size());
            if (!style()->isHorizontalWritingMode())
                markerRect = markerRect.transposedRect();
            RenderBox* o = m_marker;
            bool propagateVisualOverflow = true;
            bool propagateLayoutOverflow = true;
            do {
                o = o->parentBox();
                if (o->isRenderBlock()) {
                    if (propagateVisualOverflow)
                        toRenderBlock(o)->addContentsVisualOverflow(markerRect);
                    if (propagateLayoutOverflow)
                        toRenderBlock(o)->addLayoutOverflow(markerRect);
                }
                if (o->hasOverflowClip()) {
                    propagateLayoutOverflow = false;
                    propagateVisualOverflow = false;
                }
                if (o->hasSelfPaintingLayer())
                    propagateVisualOverflow = false;
                markerRect.moveBy(-o->location());
            } while (o != this && propagateVisualOverflow && propagateLayoutOverflow);
        }
    }
}
Beispiel #5
0
void RenderListItem::positionListMarker()
{
    if (!m_marker || !m_marker->parent() || !m_marker->parent()->isBox())
        return;

    if (m_marker->isInside() || !m_marker->inlineBoxWrapper())
        return;

    LayoutUnit markerOldLogicalLeft = m_marker->logicalLeft();
    LayoutUnit blockOffset = 0;
    LayoutUnit lineOffset = 0;
    for (RenderBox* o = m_marker->parentBox(); o != this; o = o->parentBox()) {
        blockOffset += o->logicalTop();
        lineOffset += o->logicalLeft();
    }

    bool adjustOverflow = false;
    LayoutUnit markerLogicalLeft;
    bool hitSelfPaintingLayer = false;

    const RootInlineBox& rootBox = m_marker->inlineBoxWrapper()->root();
    LayoutUnit lineTop = rootBox.lineTop();
    LayoutUnit lineBottom = rootBox.lineBottom();

    // FIXME: Need to account for relative positioning in the layout overflow.
    if (style().isLeftToRightDirection()) {
        markerLogicalLeft = m_marker->lineOffsetForListItem() - lineOffset - paddingStart() - borderStart() + m_marker->marginStart();
        m_marker->inlineBoxWrapper()->adjustLineDirectionPosition(markerLogicalLeft - markerOldLogicalLeft);
        for (InlineFlowBox* box = m_marker->inlineBoxWrapper()->parent(); box; box = box->parent()) {
            LayoutRect newLogicalVisualOverflowRect = box->logicalVisualOverflowRect(lineTop, lineBottom);
            LayoutRect newLogicalLayoutOverflowRect = box->logicalLayoutOverflowRect(lineTop, lineBottom);
            if (markerLogicalLeft < newLogicalVisualOverflowRect.x() && !hitSelfPaintingLayer) {
                newLogicalVisualOverflowRect.setWidth(newLogicalVisualOverflowRect.maxX() - markerLogicalLeft);
                newLogicalVisualOverflowRect.setX(markerLogicalLeft);
                if (box == &rootBox)
                    adjustOverflow = true;
            }
            if (markerLogicalLeft < newLogicalLayoutOverflowRect.x()) {
                newLogicalLayoutOverflowRect.setWidth(newLogicalLayoutOverflowRect.maxX() - markerLogicalLeft);
                newLogicalLayoutOverflowRect.setX(markerLogicalLeft);
                if (box == &rootBox)
                    adjustOverflow = true;
            }
            box->setOverflowFromLogicalRects(newLogicalLayoutOverflowRect, newLogicalVisualOverflowRect, lineTop, lineBottom);
            if (box->renderer().hasSelfPaintingLayer())
                hitSelfPaintingLayer = true;
        }
    } else {
        markerLogicalLeft = m_marker->lineOffsetForListItem() - lineOffset + paddingStart() + borderStart() + m_marker->marginEnd();
        m_marker->inlineBoxWrapper()->adjustLineDirectionPosition(markerLogicalLeft - markerOldLogicalLeft);
        for (InlineFlowBox* box = m_marker->inlineBoxWrapper()->parent(); box; box = box->parent()) {
            LayoutRect newLogicalVisualOverflowRect = box->logicalVisualOverflowRect(lineTop, lineBottom);
            LayoutRect newLogicalLayoutOverflowRect = box->logicalLayoutOverflowRect(lineTop, lineBottom);
            if (markerLogicalLeft + m_marker->logicalWidth() > newLogicalVisualOverflowRect.maxX() && !hitSelfPaintingLayer) {
                newLogicalVisualOverflowRect.setWidth(markerLogicalLeft + m_marker->logicalWidth() - newLogicalVisualOverflowRect.x());
                if (box == &rootBox)
                    adjustOverflow = true;
            }
            if (markerLogicalLeft + m_marker->logicalWidth() > newLogicalLayoutOverflowRect.maxX()) {
                newLogicalLayoutOverflowRect.setWidth(markerLogicalLeft + m_marker->logicalWidth() - newLogicalLayoutOverflowRect.x());
                if (box == &rootBox)
                    adjustOverflow = true;
            }
            box->setOverflowFromLogicalRects(newLogicalLayoutOverflowRect, newLogicalVisualOverflowRect, lineTop, lineBottom);
                
            if (box->renderer().hasSelfPaintingLayer())
                hitSelfPaintingLayer = true;
        }
    }

    if (adjustOverflow) {
        LayoutRect markerRect(markerLogicalLeft + lineOffset, blockOffset, m_marker->width(), m_marker->height());
        if (!style().isHorizontalWritingMode())
            markerRect = markerRect.transposedRect();
        RenderBox* o = m_marker;
        bool propagateVisualOverflow = true;
        bool propagateLayoutOverflow = true;
        do {
            o = o->parentBox();
            if (o->hasOverflowClip())
                propagateVisualOverflow = false;
            if (is<RenderBlock>(*o)) {
                if (propagateVisualOverflow)
                    downcast<RenderBlock>(*o).addVisualOverflow(markerRect);
                if (propagateLayoutOverflow)
                    downcast<RenderBlock>(*o).addLayoutOverflow(markerRect);
            }
            if (o->hasOverflowClip())
                propagateLayoutOverflow = false;
            if (o->hasSelfPaintingLayer())
                propagateVisualOverflow = false;
            markerRect.moveBy(-o->location());
        } while (o != this && propagateVisualOverflow && propagateLayoutOverflow);
    }
}