Esempio n. 1
0
//position when origin is 0,0
static qreal adjustedPosition(QGraphicsObject *item, QDeclarativeAnchorLine::AnchorLine anchorLine)
{
    int ret = 0;
    QGraphicsItemPrivate *d = QGraphicsItemPrivate::get(item);
    switch(anchorLine) {
    case QDeclarativeAnchorLine::Left:
        ret = 0;
        break;
    case QDeclarativeAnchorLine::Right:
        ret = d->width();
        break;
    case QDeclarativeAnchorLine::Top:
        ret = 0;
        break;
    case QDeclarativeAnchorLine::Bottom:
        ret = d->height();
        break;
    case QDeclarativeAnchorLine::HCenter:
        ret = d->width()/2;
        break;
    case QDeclarativeAnchorLine::VCenter:
        ret = d->height()/2;
        break;
    case QDeclarativeAnchorLine::Baseline:
        if (d->isDeclarativeItem)
            ret = static_cast<QDeclarativeItem*>(item)->baselineOffset();
        break;
    default:
        break;
    }

    return ret;
}
Esempio n. 2
0
void QDeclarativeAnchorsPrivate::centerInChanged()
{
    if (!centerIn || fill || !isItemComplete())
        return;

    if (updatingCenterIn < 2) {
        ++updatingCenterIn;
        QGraphicsItemPrivate *itemPrivate = QGraphicsItemPrivate::get(item);
        if (centerIn == item->parentItem()) {
            QGraphicsItemPrivate *parentPrivate = QGraphicsItemPrivate::get(item->parentItem());
            QPointF p((parentPrivate->width() - itemPrivate->width()) / 2. + hCenterOffset,
                      (parentPrivate->height() - itemPrivate->height()) / 2. + vCenterOffset);
            setItemPos(p);

        } else if (centerIn->parentItem() == item->parentItem()) {
            QGraphicsItemPrivate *centerPrivate = QGraphicsItemPrivate::get(centerIn);
            QPointF p(centerIn->x() + (centerPrivate->width() - itemPrivate->width()) / 2. + hCenterOffset,
                      centerIn->y() + (centerPrivate->height() - itemPrivate->height()) / 2. + vCenterOffset);
            setItemPos(p);
        }

        --updatingCenterIn;
    } else {
        // ### Make this certain :)
        qmlInfo(item) << QDeclarativeAnchors::tr("Possible anchor loop detected on centerIn.");
    }
}
Esempio n. 3
0
/* Depends on the width/height of the back item, and so needs reevaulating
   if those change.
*/
void QDeclarativeFlipablePrivate::setBackTransform()
{
    QTransform mat;
    QGraphicsItemPrivate *dBack = QGraphicsItemPrivate::get(back);
    mat.translate(dBack->width()/2,dBack->height()/2);
    if (dBack->width() && wantBackYFlipped)
        mat.rotate(180, Qt::YAxis);
    if (dBack->height() && wantBackXFlipped)
        mat.rotate(180, Qt::XAxis);
    mat.translate(-dBack->width()/2,-dBack->height()/2);
    back->setTransform(mat);
}
Esempio n. 4
0
//### const item?
//local position
static qreal position(QGraphicsObject *item, QDeclarativeAnchorLine::AnchorLine anchorLine)
{
    qreal ret = 0.0;
    QGraphicsItemPrivate *d = QGraphicsItemPrivate::get(item);
    switch(anchorLine) {
    case QDeclarativeAnchorLine::Left:
        ret = item->x();
        break;
    case QDeclarativeAnchorLine::Right:
        ret = item->x() + d->width();
        break;
    case QDeclarativeAnchorLine::Top:
        ret = item->y();
        break;
    case QDeclarativeAnchorLine::Bottom:
        ret = item->y() + d->height();
        break;
    case QDeclarativeAnchorLine::HCenter:
        ret = item->x() + hcenter(item);
        break;
    case QDeclarativeAnchorLine::VCenter:
        ret = item->y() + vcenter(item);
        break;
    case QDeclarativeAnchorLine::Baseline:
        if (d->isDeclarativeItem)
            ret = item->y() + static_cast<QDeclarativeItem*>(item)->baselineOffset();
        break;
    default:
        break;
    }

    return ret;
}
Esempio n. 5
0
void QDeclarativeAnchorsPrivate::fillChanged()
{
    Q_Q(QDeclarativeAnchors);
    if (!fill || !isItemComplete())
        return;

    if (updatingFill < 2) {
        ++updatingFill;

        qreal horizontalMargin = q->mirrored() ? rightMargin : leftMargin;

        if (fill == item->parentItem()) {                         //child-parent
            setItemPos(QPointF(horizontalMargin, topMargin));
        } else if (fill->parentItem() == item->parentItem()) {   //siblings
            setItemPos(QPointF(fill->x()+horizontalMargin, fill->y()+topMargin));
        }
        QGraphicsItemPrivate *fillPrivate = QGraphicsItemPrivate::get(fill);
        setItemSize(QSizeF(fillPrivate->width()-leftMargin-rightMargin, fillPrivate->height()-topMargin-bottomMargin));

        --updatingFill;
    } else {
        // ### Make this certain :)
        qmlInfo(item) << QDeclarativeAnchors::tr("Possible anchor loop detected on fill.");
    }

}
Esempio n. 6
0
static qreal vcenter(QGraphicsItem *i)
{
    QGraphicsItemPrivate *item = QGraphicsItemPrivate::get(i);

    qreal height = item->height();
    int ih = height;
    if (ih % 2)
        return (height + 1) / 2;
    else
        return height / 2;
}
Esempio n. 7
0
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)

//### const item?
//local position
static qreal position(QGraphicsObject *item, QDeclarativeAnchorLine::AnchorLine anchorLine)
{
    qreal ret = 0.0;
    QGraphicsItemPrivate *d = QGraphicsItemPrivate::get(item);
    switch(anchorLine) {
    case QDeclarativeAnchorLine::Left:
        ret = item->x();
        break;
    case QDeclarativeAnchorLine::Right:
        ret = item->x() + d->width();
        break;
    case QDeclarativeAnchorLine::Top:
        ret = item->y();
        break;
    case QDeclarativeAnchorLine::Bottom:
        ret = item->y() + d->height();
        break;
    case QDeclarativeAnchorLine::HCenter:
        ret = item->x() + d->width()/2;
        break;
    case QDeclarativeAnchorLine::VCenter:
        ret = item->y() + d->height()/2;
        break;
    case QDeclarativeAnchorLine::Baseline:
        if (d->isDeclarativeItem)
            ret = item->y() + static_cast<QDeclarativeItem*>(item)->baselineOffset();
        break;
    default:
        break;
    }

    return ret;
}
Esempio n. 8
0
void QDeclarativeAnchorsPrivate::updateVerticalAnchors()
{
    if (fill || centerIn || !isItemComplete())
        return;

    if (updatingVerticalAnchor < 2) {
        ++updatingVerticalAnchor;
        QGraphicsItemPrivate *itemPrivate = QGraphicsItemPrivate::get(item);
        if (usedAnchors & QDeclarativeAnchors::TopAnchor) {
            //Handle stretching
            bool invalid = true;
            qreal height = 0.0;
            if (usedAnchors & QDeclarativeAnchors::BottomAnchor) {
                invalid = calcStretch(top, bottom, topMargin, -bottomMargin, QDeclarativeAnchorLine::Top, height);
            } else if (usedAnchors & QDeclarativeAnchors::VCenterAnchor) {
                invalid = calcStretch(top, vCenter, topMargin, vCenterOffset, QDeclarativeAnchorLine::Top, height);
                height *= 2;
            }
            if (!invalid)
                setItemHeight(height);

            //Handle top
            if (top.item == item->parentItem()) {
                setItemY(adjustedPosition(top.item, top.anchorLine) + topMargin);
            } else if (top.item->parentItem() == item->parentItem()) {
                setItemY(position(top.item, top.anchorLine) + topMargin);
            }
        } else if (usedAnchors & QDeclarativeAnchors::BottomAnchor) {
            //Handle stretching (top + bottom case is handled above)
            if (usedAnchors & QDeclarativeAnchors::VCenterAnchor) {
                qreal height = 0.0;
                bool invalid = calcStretch(vCenter, bottom, vCenterOffset, -bottomMargin,
                                              QDeclarativeAnchorLine::Top, height);
                if (!invalid)
                    setItemHeight(height*2);
            }

            //Handle bottom
            if (bottom.item == item->parentItem()) {
                setItemY(adjustedPosition(bottom.item, bottom.anchorLine) - itemPrivate->height() - bottomMargin);
            } else if (bottom.item->parentItem() == item->parentItem()) {
                setItemY(position(bottom.item, bottom.anchorLine) - itemPrivate->height() - bottomMargin);
            }
        } else if (usedAnchors & QDeclarativeAnchors::VCenterAnchor) {
            //(stetching handled above)

            //Handle vCenter
            if (vCenter.item == item->parentItem()) {
                setItemY(adjustedPosition(vCenter.item, vCenter.anchorLine)
                              - vcenter(item) + vCenterOffset);
            } else if (vCenter.item->parentItem() == item->parentItem()) {
                setItemY(position(vCenter.item, vCenter.anchorLine) - vcenter(item) + vCenterOffset);
            }
        } else if (usedAnchors & QDeclarativeAnchors::BaselineAnchor) {
            //Handle baseline
            if (baseline.item == item->parentItem()) {
                if (itemPrivate->isDeclarativeItem)
                    setItemY(adjustedPosition(baseline.item, baseline.anchorLine)
                        - static_cast<QDeclarativeItem *>(item)->baselineOffset() + baselineOffset);
            } else if (baseline.item->parentItem() == item->parentItem()) {
                if (itemPrivate->isDeclarativeItem)
                    setItemY(position(baseline.item, baseline.anchorLine)
                        - static_cast<QDeclarativeItem *>(item)->baselineOffset() + baselineOffset);
            }
        }
        --updatingVerticalAnchor;
    } else {
        // ### Make this certain :)
        qmlInfo(item) << QDeclarativeAnchors::tr("Possible anchor loop detected on vertical anchor.");
    }
}
Esempio n. 9
0
void QDeclarativeGrid::doPositioning(QSizeF *contentSize)
{
    QDeclarativeBasePositionerPrivate *d = static_cast<QDeclarativeBasePositionerPrivate*>(QDeclarativeBasePositionerPrivate::get(this));
    int c = m_columns;
    int r = m_rows;
    //Is allocating the extra QPODVector too much overhead?
    QPODVector<PositionedItem, 8> visibleItems;//we aren't concerned with invisible items
    visibleItems.reserve(positionedItems.count());
    for(int i=0; i<positionedItems.count(); i++)
        if(positionedItems[i].item && positionedItems[i].isVisible)
            visibleItems.append(positionedItems[i]);

    int numVisible = visibleItems.count();
    if (m_columns <= 0 && m_rows <= 0) {
        c = 4;
        r = (numVisible+3)/4;
    } else if (m_rows <= 0) {
        r = (numVisible+(m_columns-1))/m_columns;
    } else if (m_columns <= 0) {
        c = (numVisible+(m_rows-1))/m_rows;
    }

    if(r==0 || c==0)
        return; //Nothing to do

    QList<int> maxColWidth;
    QList<int> maxRowHeight;
    int childIndex =0;
    if (m_flow == LeftToRight) {
        for (int i=0; i < r; i++) {
            for (int j=0; j < c; j++) {
                if (j==0)
                    maxRowHeight << 0;
                if (i==0)
                    maxColWidth << 0;

                if (childIndex == visibleItems.count())
                    break;

                const PositionedItem &child = visibleItems.at(childIndex++);
                QGraphicsItemPrivate *childPrivate = QGraphicsItemPrivate::get(child.item);
                if (childPrivate->width() > maxColWidth[j])
                    maxColWidth[j] = childPrivate->width();
                if (childPrivate->height() > maxRowHeight[i])
                    maxRowHeight[i] = childPrivate->height();
            }
        }
    } else {
        for (int j=0; j < c; j++) {
            for (int i=0; i < r; i++) {
                if (j==0)
                    maxRowHeight << 0;
                if (i==0)
                    maxColWidth << 0;

                if (childIndex == visibleItems.count())
                    break;

                const PositionedItem &child = visibleItems.at(childIndex++);
                QGraphicsItemPrivate *childPrivate = QGraphicsItemPrivate::get(child.item);
                if (childPrivate->width() > maxColWidth[j])
                    maxColWidth[j] = childPrivate->width();
                if (childPrivate->height() > maxRowHeight[i])
                    maxRowHeight[i] = childPrivate->height();
            }
        }
    }

    int widthSum = 0;
    for(int j=0; j < maxColWidth.size(); j++) {
        if(j)
            widthSum += spacing();
        widthSum += maxColWidth[j];
    }

    int heightSum = 0;
    for(int i=0; i < maxRowHeight.size(); i++) {
        if(i)
            heightSum += spacing();
        heightSum += maxRowHeight[i];
    }

    contentSize->setHeight(heightSum);
    contentSize->setWidth(widthSum);

    int end = 0;
    if(widthValid())
        end = width();
    else
        end = widthSum;

    int xoffset=0;
    if(!d->isLeftToRight())
        xoffset=end;
    int yoffset=0;
    int curRow =0;
    int curCol =0;
    for (int i = 0; i < visibleItems.count(); ++i) {
        const PositionedItem &child = visibleItems.at(i);
        int childXOffset = xoffset;
        if(!d->isLeftToRight())
            childXOffset -= QGraphicsItemPrivate::get(child.item)->width();
        if((child.item->x()!=childXOffset)||(child.item->y()!=yoffset)) {
            positionX(childXOffset, child);
            positionY(yoffset, child);
        }

        if (m_flow == LeftToRight) {
            if(d->isLeftToRight())
                xoffset+=maxColWidth[curCol]+spacing();
            else
                xoffset-=maxColWidth[curCol]+spacing();
            curCol++;
            curCol%=c;
            if (!curCol) {
                yoffset+=maxRowHeight[curRow]+spacing();
                if(d->isLeftToRight())
                    xoffset=0;
                else
                    xoffset=end;
                curRow++;
                if (curRow>=r)
                    break;
            }
        } else {
            yoffset+=maxRowHeight[curRow]+spacing();
            curRow++;
            curRow%=r;
            if (!curRow) {
                if(d->isLeftToRight())
                    xoffset+=maxColWidth[curCol]+spacing();
                else
                    xoffset-=maxColWidth[curCol]+spacing();
                yoffset=0;
                curCol++;
                if (curCol>=c)
                    break;
            }
        }
    }
}
Esempio n. 10
0
void QDeclarativeBasePositioner::prePositioning()
{
    Q_D(QDeclarativeBasePositioner);
    if (!isComponentComplete())
        return;

    if (d->doingPositioning)
        return;

    d->queuedPositioning = false;
    d->doingPositioning = true;
    //Need to order children by creation order modified by stacking order
    QList<QGraphicsItem *> children = d->QGraphicsItemPrivate::children;
    std::sort(children.begin(), children.end(), QGraphicsItemPrivate::insertionOrder);

    QPODVector<PositionedItem,8> oldItems;
    positionedItems.copyAndClear(oldItems);
    for (int ii = 0; ii < children.count(); ++ii) {
        QGraphicsObject *child = children.at(ii)->toGraphicsObject();
        if (!child)
            continue;
        QGraphicsItemPrivate *childPrivate = static_cast<QGraphicsItemPrivate*>(QGraphicsItemPrivate::get(child));
        PositionedItem *item = 0;
        PositionedItem posItem(child);
        int wIdx = oldItems.find(posItem);
        if (wIdx < 0) {
            d->watchChanges(child);
            positionedItems.append(posItem);
            item = &positionedItems[positionedItems.count()-1];
            item->isNew = true;
            if (child->opacity() <= 0.0 || childPrivate->explicitlyHidden || !childPrivate->width() || !childPrivate->height())
                item->isVisible = false;
        } else {
            item = &oldItems[wIdx];
            // Items are only omitted from positioning if they are explicitly hidden
            // i.e. their positioning is not affected if an ancestor is hidden.
            if (child->opacity() <= 0.0 || childPrivate->explicitlyHidden || !childPrivate->width() || !childPrivate->height()) {
                item->isVisible = false;
            } else if (!item->isVisible) {
                item->isVisible = true;
                item->isNew = true;
            } else {
                item->isNew = false;
            }
            positionedItems.append(*item);
        }
    }
    QSizeF contentSize;
    doPositioning(&contentSize);
    if(d->addTransition || d->moveTransition)
        finishApplyTransitions();
    d->doingPositioning = false;
    //Set implicit size to the size of its children
    setImplicitHeight(contentSize.height());
    setImplicitWidth(contentSize.width());
}
Esempio n. 11
0
void QDeclarativeFlow::doPositioning(QSizeF *contentSize)
{
    Q_D(QDeclarativeFlow);

    int hoffset = 0;
    int voffset = 0;
    int linemax = 0;
    QList<int> hoffsets;

    for (int i = 0; i < positionedItems.count(); ++i) {
        const PositionedItem &child = positionedItems.at(i);
        if (!child.item || !child.isVisible)
            continue;

        QGraphicsItemPrivate *childPrivate = QGraphicsItemPrivate::get(child.item);
        if (d->flow == LeftToRight)  {
            if (widthValid() && hoffset && hoffset + childPrivate->width() > width()) {
                hoffset = 0;
                voffset += linemax + spacing();
                linemax = 0;
            }
        } else {
            if (heightValid() && voffset && voffset + childPrivate->height() > height()) {
                voffset = 0;
                hoffset += linemax + spacing();
                linemax = 0;
            }
        }

        if(d->isLeftToRight()) {
            if(child.item->x() != hoffset)
                positionX(hoffset, child);
        } else {
            hoffsets << hoffset;
        }
        if(child.item->y() != voffset)
            positionY(voffset, child);

        contentSize->setWidth(qMax(contentSize->width(), hoffset + childPrivate->width()));
        contentSize->setHeight(qMax(contentSize->height(), voffset + childPrivate->height()));

        if (d->flow == LeftToRight)  {
            hoffset += childPrivate->width();
            hoffset += spacing();
            linemax = qMax(linemax, qCeil(childPrivate->height()));
        } else {
            voffset += childPrivate->height();
            voffset += spacing();
            linemax = qMax(linemax, qCeil(childPrivate->width()));
        }
    }

    if(d->isLeftToRight())
        return;

    int end;
    if(widthValid())
        end = width();
    else
        end = contentSize->width();
    int acc = 0;
    for (int i = 0; i < positionedItems.count(); ++i) {
        const PositionedItem &child = positionedItems.at(i);
        if (!child.item || !child.isVisible)
            continue;
        hoffset = end - hoffsets[acc++] - QGraphicsItemPrivate::get(child.item)->width();
        if(child.item->x() != hoffset)
            positionX(hoffset, child);
    }
}