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406 lines
13 KiB
406 lines
13 KiB
/*
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* Copyright (C) 2015-2022 Département de l'Instruction Publique (DIP-SEM)
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*
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* Copyright (C) 2013 Open Education Foundation
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*
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* Copyright (C) 2010-2013 Groupement d'Intérêt Public pour
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* l'Education Numérique en Afrique (GIP ENA)
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*
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* This file is part of OpenBoard.
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*
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* OpenBoard is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3 of the License,
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* with a specific linking exception for the OpenSSL project's
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* "OpenSSL" library (or with modified versions of it that use the
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* same license as the "OpenSSL" library).
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*
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* OpenBoard is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with OpenBoard. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "UBGraphicsGroupContainerItem.h"
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#include <QtGui>
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#include "UBGraphicsMediaItem.h"
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#include "UBGraphicsTextItem.h"
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#include "domain/UBGraphicsItemDelegate.h"
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#include "domain/UBGraphicsGroupContainerItemDelegate.h"
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#include "domain/UBGraphicsScene.h"
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#include "core/memcheck.h"
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UBGraphicsGroupContainerItem::UBGraphicsGroupContainerItem(QGraphicsItem *parent)
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: QGraphicsItem(parent)
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, mCurrentItem(NULL)
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{
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setData(UBGraphicsItemData::ItemLayerType, UBItemLayerType::Object);
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setDelegate(new UBGraphicsGroupContainerItemDelegate(this, 0));
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setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
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setFlag(QGraphicsItem::ItemIsSelectable, true);
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setFlag(QGraphicsItem::ItemIsMovable, true);
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UBGraphicsGroupContainerItem::setAcceptHoverEvents(true);
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setUuid(QUuid::createUuid());
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setData(UBGraphicsItemData::itemLayerType, QVariant(itemLayerType::ObjectItem)); //Necessary to set if we want z value to be assigned correctly
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}
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UBGraphicsGroupContainerItem::~UBGraphicsGroupContainerItem()
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{
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}
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void UBGraphicsGroupContainerItem::addToGroup(QGraphicsItem *item)
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{
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if (!item) {
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qWarning("UBGraphicsGroupContainerItem::addToGroup: cannot add null item");
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return;
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}
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if (item == this) {
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qWarning("UBGraphicsGroupContainerItem::addToGroup: cannot add a group to itself");
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return;
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}
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//Check if group is allready rotatable or flippable
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if (childItems().count()) {
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if (UBGraphicsItem::isFlippable(this) && !UBGraphicsItem::isFlippable(item)) {
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Delegate()->setUBFlag(GF_FLIPPABLE_ALL_AXIS, false);
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}
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if (UBGraphicsItem::isRotatable(this) && !UBGraphicsItem::isRotatable(item)) {
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Delegate()->setUBFlag(GF_REVOLVABLE, false);
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}
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if (!UBGraphicsItem::isLocked(this) && UBGraphicsItem::isLocked(item)) {
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Delegate()->setLocked(true);
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}
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}
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else {
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Delegate()->setUBFlag(GF_FLIPPABLE_ALL_AXIS, UBGraphicsItem::isFlippable(item));
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Delegate()->setUBFlag(GF_REVOLVABLE, UBGraphicsItem::isRotatable(item));
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Delegate()->setLocked(UBGraphicsItem::isLocked(item));
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}
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if (item->data(UBGraphicsItemData::ItemLayerType) == UBItemLayerType::Control)
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setData(UBGraphicsItemData::ItemLayerType, item->data(UBGraphicsItemData::ItemLayerType));
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// COMBINE
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bool ok;
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QTransform itemTransform = item->itemTransform(this, &ok);
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if (!ok) {
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qWarning("UBGraphicsGroupContainerItem::addToGroup: could not find a valid transformation from item to group coordinates");
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return;
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}
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//setting item flags to given item
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item->setSelected(false);
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item->setFlag(QGraphicsItem::ItemIsSelectable, false);
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item->setFlag( QGraphicsItem::ItemIsMovable, false);
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item->setFlag(QGraphicsItem::ItemIsFocusable, true);
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QTransform newItemTransform(itemTransform);
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item->setPos(mapFromItem(item, 0, 0));
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if (item->scene()) {
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item->scene()->removeItem(item);
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}
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if (corescene())
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corescene()->removeItemFromDeletion(item);
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item->setParentItem(this);
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// removing position from translation component of the new transform
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if (!item->pos().isNull())
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newItemTransform *= QTransform::fromTranslate(-item->x(), -item->y());
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// removing additional transformations properties applied with itemTransform()
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QPointF origin = item->transformOriginPoint();
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QMatrix4x4 m;
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QList<QGraphicsTransform*> transformList = item->transformations();
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for (int i = 0; i < transformList.size(); ++i)
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transformList.at(i)->applyTo(&m);
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newItemTransform *= m.toTransform().inverted();
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newItemTransform.translate(origin.x(), origin.y());
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newItemTransform.rotate(-item->rotation());
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newItemTransform.scale(1/item->scale(), 1/item->scale());
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newItemTransform.translate(-origin.x(), -origin.y());
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// ### Expensive, we could maybe use dirtySceneTransform bit for optimization
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item->setTransform(newItemTransform);
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// item->d_func()->setIsMemberOfGroup(true);
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prepareGeometryChange();
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itemsBoundingRect |= itemTransform.mapRect(item->boundingRect() | item->childrenBoundingRect());
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update();
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}
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void UBGraphicsGroupContainerItem::removeFromGroup(QGraphicsItem *item)
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{
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if (!item) {
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qDebug() << "can't specify the item because of the null pointer";
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return;
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}
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UBCoreGraphicsScene *groupScene = corescene();
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if (groupScene)
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{
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groupScene->addItemToDeletion(item);
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}
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pRemoveFromGroup(item);
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item->setFlags(ItemIsSelectable | ItemIsFocusable);
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}
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void UBGraphicsGroupContainerItem::deselectCurrentItem()
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{
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if (mCurrentItem && (mCurrentItem->type() == UBGraphicsMediaItem::Type
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|| mCurrentItem->type() == UBGraphicsVideoItem::Type
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|| mCurrentItem->type() == UBGraphicsAudioItem::Type))
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{
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dynamic_cast<UBGraphicsMediaItem*>(mCurrentItem)->Delegate()->getToolBarItem()->hide();
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mCurrentItem->setSelected(false);
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mCurrentItem = NULL;
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}
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}
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QRectF UBGraphicsGroupContainerItem::boundingRect() const
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{
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return itemsBoundingRect;
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}
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void UBGraphicsGroupContainerItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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Q_UNUSED(widget);
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Q_UNUSED(painter);
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Q_UNUSED(option);
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Delegate()->postpaint(painter, option, widget);
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}
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UBCoreGraphicsScene *UBGraphicsGroupContainerItem::corescene()
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{
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UBCoreGraphicsScene *castScene = dynamic_cast<UBCoreGraphicsScene*>(QGraphicsItem::scene());
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return castScene;
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}
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UBGraphicsGroupContainerItem *UBGraphicsGroupContainerItem::deepCopyNoChildDuplication() const
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{
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UBGraphicsGroupContainerItem *copy = new UBGraphicsGroupContainerItem();
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copy->setUuid(this->uuid()); // this is OK for now as long as Widgets are imutable
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copyItemParameters(copy);
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return copy;
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}
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UBGraphicsGroupContainerItem *UBGraphicsGroupContainerItem::deepCopy() const
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{
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UBGraphicsGroupContainerItem *copy = new UBGraphicsGroupContainerItem();
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copy->setUuid(this->uuid()); // this is OK for now as long as Widgets are imutable
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foreach (QGraphicsItem *it, childItems()) {
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UBItem *childAsUBItem = dynamic_cast<UBItem*>(it);
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if (childAsUBItem) {
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QGraphicsItem *cloneItem = dynamic_cast<QGraphicsItem*>(childAsUBItem->deepCopy());
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copy->addToGroup(cloneItem);
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}
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}
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copyItemParameters(copy);
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return copy;
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}
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void UBGraphicsGroupContainerItem::copyItemParameters(UBItem *copy) const
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{
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UBGraphicsGroupContainerItem *cp = dynamic_cast<UBGraphicsGroupContainerItem*>(copy);
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if (cp)
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{
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cp->setPos(this->pos());
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cp->setTransform(this->transform());
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cp->setFlag(QGraphicsItem::ItemIsMovable, true);
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cp->setFlag(QGraphicsItem::ItemIsSelectable, true);
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cp->setData(UBGraphicsItemData::ItemLayerType, this->data(UBGraphicsItemData::ItemLayerType));
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cp->setData(UBGraphicsItemData::ItemLocked, this->data(UBGraphicsItemData::ItemLocked));
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}
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}
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void UBGraphicsGroupContainerItem::setUuid(const QUuid &pUuid)
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{
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UBItem::setUuid(pUuid);
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setData(UBGraphicsItemData::ItemUuid, QVariant(pUuid)); //store item uuid inside the QGraphicsItem to fast operations with Items on the scene
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}
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void UBGraphicsGroupContainerItem::destroy(bool canUndo) {
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foreach (QGraphicsItem *item, childItems()) {
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pRemoveFromGroup(item);
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item->setFlag(QGraphicsItem::ItemIsSelectable, true);
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item->setFlag(QGraphicsItem::ItemIsFocusable, true);
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}
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remove(canUndo);
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}
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void UBGraphicsGroupContainerItem::clearSource()
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{
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foreach(QGraphicsItem *child, childItems())
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{
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UBGraphicsItem *item = dynamic_cast<UBGraphicsItem *>(child);
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if (item)
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{
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item->clearSource();
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}
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}
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}
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void UBGraphicsGroupContainerItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
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{
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if (Delegate()->mousePressEvent(event)) {
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//NOOP
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} else {
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QGraphicsItem::mousePressEvent(event);
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setSelected(true);
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}
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}
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void UBGraphicsGroupContainerItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
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{
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if (Delegate()->mouseMoveEvent(event)) {
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// NOOP;
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} else {
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QGraphicsItem::mouseMoveEvent(event);
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}
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}
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void UBGraphicsGroupContainerItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
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{
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// mDelegate->mouseReleaseEvent(event);
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QGraphicsItem::mouseReleaseEvent(event);
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}
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QVariant UBGraphicsGroupContainerItem::itemChange(GraphicsItemChange change, const QVariant &value)
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{
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QVariant newValue = Delegate()->itemChange(change, value);
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foreach(QGraphicsItem *child, childItems())
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{
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UBGraphicsItem *item = dynamic_cast<UBGraphicsItem*>(child);
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if (item)
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{
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item->Delegate()->positionHandles();
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}
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}
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if (QGraphicsItem::ItemSelectedChange == change)
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{
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deselectCurrentItem();
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}
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return QGraphicsItem::itemChange(change, newValue);
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}
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void UBGraphicsGroupContainerItem::pRemoveFromGroup(QGraphicsItem *item)
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{
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if (!item) {
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qWarning("QGraphicsItemGroup::removeFromGroup: cannot remove null item");
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return;
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}
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QGraphicsItem *newParent = parentItem();
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if (childItems().count()) {
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if (!UBGraphicsItem::isFlippable(item) || !UBGraphicsItem::isRotatable(item)) {
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bool flippableNow = true;
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bool rotatableNow = true;
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bool lockedNow = false;
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foreach (QGraphicsItem *item, childItems()) {
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if (!UBGraphicsItem::isFlippable(item)) {
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flippableNow = false;
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}
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if (!UBGraphicsItem::isRotatable(item)) {
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rotatableNow = false;
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}
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if(UBGraphicsItem::isLocked(item))
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lockedNow = true;
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if (!rotatableNow && !flippableNow && lockedNow) {
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break;
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}
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}
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Delegate()->setUBFlag(GF_FLIPPABLE_ALL_AXIS, flippableNow);
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Delegate()->setUBFlag(GF_REVOLVABLE, rotatableNow);
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Delegate()->setLocked(lockedNow);
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}
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}
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// COMBINE
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bool ok;
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QTransform itemTransform;
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if (newParent)
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itemTransform = item->itemTransform(newParent, &ok);
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else
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itemTransform = item->sceneTransform();
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QPointF oldPos = item->mapToItem(newParent, 0, 0);
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item->setParentItem(newParent);
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item->setPos(oldPos);
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UBGraphicsScene *Scene = dynamic_cast<UBGraphicsScene *>(item->scene());
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if (Scene)
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{
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Scene->addItem(item);
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}
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// removing position from translation component of the new transform
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if (!item->pos().isNull())
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itemTransform *= QTransform::fromTranslate(-item->x(), -item->y());
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// removing additional transformations properties applied
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// with itemTransform() or sceneTransform()
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QPointF origin = item->transformOriginPoint();
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QMatrix4x4 m;
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QList<QGraphicsTransform*> transformList = item->transformations();
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for (int i = 0; i < transformList.size(); ++i)
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transformList.at(i)->applyTo(&m);
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itemTransform *= m.toTransform().inverted();
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itemTransform.translate(origin.x(), origin.y());
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itemTransform.rotate(-item->rotation());
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itemTransform.scale(1 / item->scale(), 1 / item->scale());
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itemTransform.translate(-origin.x(), -origin.y());
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// ### Expensive, we could maybe use dirtySceneTransform bit for optimization
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item->setTransform(itemTransform);
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// item->d_func()->setIsMemberOfGroup(item->group() != 0);
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// ### Quite expensive. But removeFromGroup() isn't called very often.
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prepareGeometryChange();
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itemsBoundingRect = childrenBoundingRect();
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item->setFlag(ItemIsMovable, true);
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}
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