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121 lines
3.3 KiB
C++
121 lines
3.3 KiB
C++
/*
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Copyright 2006-2025 The QElectroTech Team
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This file is part of QElectroTech.
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QElectroTech 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, either version 2 of the License, or
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(at your option) any later version.
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QElectroTech 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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You should have received a copy of the GNU General Public License
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along with QElectroTech. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qgimanager.h"
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#include <QGraphicsScene>
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#include <QGraphicsItem>
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/**
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Constructeur
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@param sc QGraphicsScene a utiliser pour gerer au mieux les QGraphicsItem
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*/
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QGIManager::QGIManager(QGraphicsScene *sc) :
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scene(sc),
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destroy_qgi_on_delete(true)
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{
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}
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/**
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Destructeur
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Lors de sa destruction, le QGI Manager detruit les QGraphicsItem restants
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si ceux-ci n'appartiennent pas a la scene ; ce comportement peut etre
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change avec la methode setDestroyQGIOnDelete
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@see setDestroyQGIOnDelete
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*/
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QGIManager::~QGIManager()
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{
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if (!destroy_qgi_on_delete) return;
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foreach(QGraphicsItem *qgi, qgi_manager.keys()) {
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if (!scene -> items().contains(qgi)) delete qgi;
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}
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}
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/**
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Demande au QGIManager de gerer un QGI
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@param qgi QGraphicsItem a gerer
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*/
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void QGIManager::manage(QGraphicsItem *qgi) {
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if (qgi -> parentItem()) return;
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if (qgi_manager.contains(qgi)) ++ qgi_manager[qgi];
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else qgi_manager.insert(qgi, 1);
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}
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/**
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Indique au QGIManager qu'une reference vers un QGI a ete detruite
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S'il n'y a plus de references vers ce QGI et que celui-ci n'est pas present
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sur la scene de ce QGIManager, alors il sera detruit.
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@param qgi QGraphicsItem a ne plus gerer
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*/
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void QGIManager::release(QGraphicsItem *qgi) {
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if (!qgi_manager.contains(qgi)) return;
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-- qgi_manager[qgi];
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if (qgi_manager[qgi] <= 0 && !(scene -> items().contains(qgi))) {
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delete qgi;
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qgi_manager.remove(qgi);
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}
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}
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/**
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Demande au QGIManager de gerer plusieurs QGI
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@param qgis QGraphicsItems a gerer
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*/
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void QGIManager::manage(const QList<QGraphicsItem *> &qgis) {
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foreach(QGraphicsItem *qgi, qgis) manage(qgi);
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}
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/**
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Indique au QGIManager que pour chaque QGI fourni, une reference vers celui-ci
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a ete detruite.
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S'il n'y a plus de references vers un QGI et que celui-ci n'est pas present
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sur la scene de ce QGIManager, alors il sera detruit.
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@param qgis QGraphicsItems a ne plus gerer
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*/
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void QGIManager::release(const QList<QGraphicsItem *> &qgis) {
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foreach(QGraphicsItem *qgi, qgis) release(qgi);
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}
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void QGIManager::manage(const QVector<QGraphicsItem *> &items) {
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for (const auto &qgi : items) {
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manage(qgi);
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}
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}
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void QGIManager::release(const QVector<QGraphicsItem *> &items) {
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for (const auto &qgi : items) {
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release(qgi);
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}
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}
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/**
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Indique au QGIManager de detruire les QGraphicsItem restants lors de sa
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destruction si ceux-ci n'appartiennent pas a la scene
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*/
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void QGIManager::setDestroyQGIOnDelete(bool b) {
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destroy_qgi_on_delete = b;
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}
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/**
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Permet de savoir si ce QGIManager gere ou non un item donne
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@param qgi QGraphicsItem dont il faut verifier la presence
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@return true si l'item est gere, false sinon
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*/
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bool QGIManager::manages(QGraphicsItem *qgi) const
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{
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return(qgi_manager.contains(qgi));
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}
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