VisiblePosition RenderReplaced::positionForCoordinates(int x, int y)
{
    InlineBox* box = inlineBoxWrapper();
    if (!box)
        return VisiblePosition(element(), 0, DOWNSTREAM);

    // FIXME: This code is buggy if the replaced element is relative positioned.

    RootInlineBox* root = box->root();

    int top = root->topOverflow();
    int bottom = root->nextRootBox() ? root->nextRootBox()->topOverflow() : root->bottomOverflow();

    if (y + yPos() < top)
        return VisiblePosition(element(), caretMinOffset(), DOWNSTREAM); // coordinates are above

    if (y + yPos() >= bottom)
        return VisiblePosition(element(), caretMaxOffset(), DOWNSTREAM); // coordinates are below

    if (element()) {
        if (x <= width() / 2)
            return VisiblePosition(element(), 0, DOWNSTREAM);
        return VisiblePosition(element(), 1, DOWNSTREAM);
    }

    return RenderBox::positionForCoordinates(x, y);
}
VisiblePosition RenderReplaced::positionForPoint(const IntPoint& point)
{
    InlineBox* box = inlineBoxWrapper();
    if (!box)
        return createVisiblePosition(0, DOWNSTREAM);

    // FIXME: This code is buggy if the replaced element is relative positioned.

    RootInlineBox* root = box->root();

    int top = root->topOverflow();
    int bottom = root->nextRootBox() ? root->nextRootBox()->topOverflow() : root->bottomOverflow();

    if (point.y() + y() < top)
        return createVisiblePosition(caretMinOffset(), DOWNSTREAM); // coordinates are above

    if (point.y() + y() >= bottom)
        return createVisiblePosition(caretMaxOffset(), DOWNSTREAM); // coordinates are below

    if (node()) {
        if (point.x() <= width() / 2)
            return createVisiblePosition(0, DOWNSTREAM);
        return createVisiblePosition(1, DOWNSTREAM);
    }

    return RenderBox::positionForPoint(point);
}
VisiblePosition RenderReplaced::positionForCoordinates(int _x, int _y)
{
    InlineBox *box = inlineBoxWrapper();
    if (!box)
        return VisiblePosition(element(), 0, DOWNSTREAM);

    RootInlineBox *root = box->root();

    int absx, absy;
    containingBlock()->absolutePosition(absx, absy);

    int top = absy + root->topOverflow();
    int bottom = root->nextRootBox() ? absy + root->nextRootBox()->topOverflow() : absy + root->bottomOverflow();

    if (_y < top)
        return VisiblePosition(element(), caretMinOffset(), DOWNSTREAM); // coordinates are above
    
    if (_y >= bottom)
        return VisiblePosition(element(), caretMaxOffset(), DOWNSTREAM); // coordinates are below
    
    if (element()) {
        if (_x <= absx + xPos() + (width() / 2))
            return VisiblePosition(element(), 0, DOWNSTREAM);

        return VisiblePosition(element(), 1, DOWNSTREAM);
    }

    return RenderBox::positionForCoordinates(_x, _y);
}
Beispiel #4
0
VisiblePosition nextLinePosition(const VisiblePosition &visiblePosition, int x)
{
    Position p = visiblePosition.deepEquivalent();
    Node *node = p.node();
    Node* highestRoot = highestEditableRoot(p);
    if (!node)
        return VisiblePosition();
    
    node->document()->updateLayoutIgnorePendingStylesheets();

    RenderObject *renderer = node->renderer();
    if (!renderer)
        return VisiblePosition();

    RenderBlock *containingBlock = 0;
    RootInlineBox *root = 0;
    InlineBox* box;
    int ignoredCaretOffset;
    visiblePosition.getInlineBoxAndOffset(box, ignoredCaretOffset);
    if (box) {
        root = box->root()->nextRootBox();
        if (root)
            containingBlock = renderer->containingBlock();
    }

    if (!root) {
        // This containing editable block does not have a next line.
        // Need to move forward to next containing editable block in this root editable
        // block and find the first root line box in that block.
        Node* startBlock = enclosingBlock(node);
        Node* n = nextLeafWithSameEditability(node, p.offset());
        while (n && startBlock == enclosingBlock(n))
            n = nextLeafWithSameEditability(n);
        while (n) {
            if (highestEditableRoot(Position(n, 0)) != highestRoot)
                break;
            Position pos(n, caretMinOffset(n));
            if (pos.isCandidate()) {
                ASSERT(n->renderer());
                pos.getInlineBoxAndOffset(DOWNSTREAM, box, ignoredCaretOffset);
                if (box) {
                    // next root line box found
                    root = box->root();
                    containingBlock = n->renderer()->containingBlock();
                    break;
                }

                return VisiblePosition(pos, DOWNSTREAM);
            }
            n = nextLeafWithSameEditability(n);
        }
    }
    
    if (root) {
        // FIXME: Can be wrong for multi-column layout.
        int absx, absy;
        containingBlock->absolutePositionForContent(absx, absy);
        if (containingBlock->hasOverflowClip())
            containingBlock->layer()->subtractScrollOffset(absx, absy);
        RenderObject *renderer = root->closestLeafChildForXPos(x - absx, isEditablePosition(p))->object();
        Node* node = renderer->element();
        if (editingIgnoresContent(node))
            return Position(node->parent(), node->nodeIndex());
        return renderer->positionForCoordinates(x - absx, root->topOverflow());
    }    

    // Could not find a next line. This means we must already be on the last line.
    // Move to the end of the content in this block, which effectively moves us
    // to the end of the line we're on.
    Element* rootElement = node->isContentEditable() ? node->rootEditableElement() : node->document()->documentElement();
    return VisiblePosition(rootElement, rootElement ? rootElement->childNodeCount() : 0, DOWNSTREAM);
}