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.");
}
}
void QDeclarativeAnchorsPrivate::centerInChanged()
{
Q_Q(QDeclarativeAnchors);
if (!centerIn || fill || !isItemComplete())
return;
if (updatingCenterIn < 2) {
++updatingCenterIn;
qreal effectiveHCenterOffset = q->mirrored() ? -hCenterOffset : hCenterOffset;
if (centerIn == item->parentItem()) {
QPointF p(hcenter(item->parentItem()) - hcenter(item) + effectiveHCenterOffset,
vcenter(item->parentItem()) - vcenter(item) + vCenterOffset);
setItemPos(p);
} else if (centerIn->parentItem() == item->parentItem()) {
QPointF p(centerIn->x() + hcenter(centerIn) - hcenter(item) + effectiveHCenterOffset,
centerIn->y() + vcenter(centerIn) - vcenter(item) + vCenterOffset);
setItemPos(p);
}
--updatingCenterIn;
} else {
// ### Make this certain :)
qmlInfo(item) << QDeclarativeAnchors::tr("Possible anchor loop detected on centerIn.");
}
}
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.");
}
}
void
DataVisualizer::setItemPos(QGraphicsItem * item, QPointF pos)
{
typedef QList<QGraphicsItem *> QGraphicsItemList;
SceneType scene(gvDisplay->scene());
if (!item || !scene) return;
// set the desired position
item->setPos(pos);
// check for collisions with other items
QList<QGraphicsItem *> collides = scene->collidingItems(item);
if (collides.size() == 0) return;
QGraphicsItem * cItem = 0;
QGraphicsItemList::const_iterator it = collides.constBegin();
while(it != collides.constEnd()) {
cItem = *it;
if (cItem && !cItem->parentItem()) break;
it++;
}
if (!cItem || cItem->parentItem()) return;
// item has no parent => top-level, bounding rect
qreal newYPos = cItem->y() +
0.5*cItem->boundingRect().height() +
0.5*item->boundingRect().height() +
itemMargin;
QPointF newPos(pos);
newPos.setY(newYPos);
setItemPos(item, newPos);
}
/**********************************
* 2.接收线程发送过来的半张和全张缩略图 *
* 分别添加到midpixitem和allpixitem *
***********************************/
void smallPictureView::itemAddImgpre(QImage fullImg, QImage img, QSize size, int i){
all_Qimg[i] = img;
all_size[i] = size;
QImage halfImg = fullImg.copy(18,0,36,48);
midPixItems.at(i)->setPixmap(QPixmap::fromImage(fullImg));
allPixItem.at(i)->setPixmap(QPixmap::fromImage(halfImg));
allPixItem.at(i)->setData(1001,allImgs.at(i).absoluteFilePath());
allPixItem.at(i)->setToolTip(
"<span style=\"color: white; background-color: transparent;\">"
+ allImgs.at(i).fileName() + "</span>");
midPixItems.at(i)->setToolTip(
"<span style=\"color: white; background-color:transparent;\">"
+ allImgs.at(i).fileName() + "</span>");
setItemPos(i);
}
void
DataVisualizer::draw(SceneType scene, qreal& lastXPos, Element::Ptr e, int propertyIndex)
{
if (e.isNull()) return;
// see if item should be drawn
Element::Property p(Element::getProperty(propertyIndex));
Element::PropertyType type(Element::propertyType(p));
Element::PropertyVariant var(e->propertyConst(p));
if (p == Element::NUCLEONS_PROPERTY && !e->isIsotope()) return;
if (!Element::isValidVariant(var)) return;
// build the text item
QGraphicsItem * item(0);
QGraphicsTextItem * text = new QGraphicsTextItem();
text->setHtml( getLinkText(*e) + "<br>" +
mMainWindow->toString(var));
text->setTextInteractionFlags(Qt::TextBrowserInteraction);
text->setToolTip(tr("formattedFormulaToolTip"));
connect(text, SIGNAL(linkActivated(const QString&)),
this, SLOT(emitElementLinkActivated(const QString&)));
item = text;
// build the encapsulating box item
QGraphicsRectItem * rect = new QGraphicsRectItem(
item->boundingRect() );
rect->setBrush(QBrush(QColor(196, 255, 196)));
// combine both and add them to the scene
item->setParentItem(rect);
scene->addItem(rect);
QPointF pos(boost::apply_visitor(DrawingPositionFromPropertyVariant(), var));
if (type == Element::COMPLEX_TYPE ||
type == Element::STRING_TYPE) {
// no stacking for 2D drawing
// item positions are stretched in X direction
if (lastXPos > pos.x()) {
pos.setX(lastXPos);
}
rect->setPos(pos);
// update drawing position for the next item
lastXPos = pos.x() + rect->boundingRect().width() + itemMargin;
} else {
setItemPos(rect, pos);
}
}
ItemAnimation::ItemAnimation(QGraphicsItem *item, QObject *parent) :
QObject(parent),mHide(false),mFade(None)
{
mMachine = new TransformMachine;//QGraphicsItemAnimation;
QTimeLine *timer = new QTimeLine(1000);
timer->setEasingCurve(QEasingCurve::OutQuad);
timer->setFrameRange(0, 100);
mMachine->setTimeLine(timer);
connect(mMachine, SIGNAL(transformChanged(QTransform)), this, SLOT(setTransform(QTransform)));
connect(mMachine, SIGNAL(zValueChanged(qreal)), this, SLOT(setZValue(qreal)));
connect(mMachine, SIGNAL(posChanged(QPointF)), this, SLOT(setItemPos(QPointF)));
connect(mMachine->timeLine(), SIGNAL(finished()), this, SLOT(tryHide()));
connect(mMachine->timeLine(), SIGNAL(finished()), this, SIGNAL(finished()));
setItem(item);
}
