qquickanchors.cpp

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#include "qquickanchors_p_p.h"

#include "qquickitem.h"
#include "qquickitem_p.h"

#include <qqmlinfo.h>

QT_BEGIN_NAMESPACE

//TODO: should we cache relationships, so we don't have to check each time (parent-child or sibling)?
//TODO: support non-parent, non-sibling (need to find lowest common ancestor)

static inline qreal hcenter(QQuickItem *item)
{
    qreal width = item->width();
    if (QQuickAnchors *anchors = QQuickItemPrivate::get(item)->_anchors) {
        if (!QQuickAnchorsPrivate::get(anchors)->centerAligned)
            return width / 2;
    }
    int iw = width;
    if (iw % 2)
        return (width + 1) / 2;
    else
        return width / 2;
}

static inline qreal vcenter(QQuickItem *item)
{
    qreal height = item->height();
    if (QQuickAnchors *anchors = QQuickItemPrivate::get(item)->_anchors) {
        if (!QQuickAnchorsPrivate::get(anchors)->centerAligned)
            return height / 2;
    }
    int ih = height;
    if (ih % 2)
        return (height + 1) / 2;
    else