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87 lines
3.0 KiB
C++
87 lines
3.0 KiB
C++
/*
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Copyright 2006-2020 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 "qgraphicsitemutility.h"
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#include "element.h"
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#include "diagram.h"
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#include <QGraphicsItem>
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#include <QDebug>
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/**
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@brief centerToParentBottom
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Center the item at the bottom of is parent.
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@param item item to center
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@return true if centered else false (item have not parent)
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*/
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bool centerToParentBottom(QGraphicsItem *item) {
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if (! item->parentItem()) {
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qDebug() << "Qet::centerToParentBottom : item have not parent";
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return false;
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}
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QPointF p = item -> parentItem() -> boundingRect().center();
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p.ry() += item -> parentItem() -> boundingRect().height()/2;
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p.rx() -= (item -> boundingRect().width()/2 + item->boundingRect().left()); //< we add boundingrect.left because this value can be négative
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item -> setPos(p);
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return true;
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}
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/**
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@brief centerToBottomDiagram
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Set item pos to the bottom of diagram and centered vertically to element_to_follow, and add offset.
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@param item_to_center
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@param element_to_follow
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@param offset
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@return true if element is centered else false (element_to_follow have not diagram)
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*/
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#include "elementtextitemgroup.h"
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#include "crossrefitem.h"
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bool centerToBottomDiagram (QGraphicsItem *item_to_center, Element *element_to_follow, qreal offset) {
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if (! element_to_follow -> diagram()) {
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qDebug() << "qgraphicsitemutility centerAtBottomDiagram : Element_to_follow have not diagram";
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return false;
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}
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QRectF border = element_to_follow -> diagram() -> border_and_titleblock.insideBorderRect();
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QPointF point = element_to_follow -> sceneBoundingRect().center();
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point.setY(border.bottom() - item_to_center -> boundingRect().height() - offset );
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point.rx() -= (item_to_center -> boundingRect().width()/2);
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//Apply the difference between the pos() of item and his bounding rect
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QPointF tl = item_to_center->boundingRect().topLeft();
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point.rx() -= tl.x();
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point.ry() -= tl.y();
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item_to_center -> setPos(0,0); //Due to a weird behavior or bug, before set the new position and rotation,
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item_to_center -> setRotation(0); //we must to set the position and rotation at 0.
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item_to_center->setPos(item_to_center->mapFromScene(point));
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qreal rot = item_to_center->rotation();
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QGraphicsItem *parent = item_to_center->parentItem();
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while (parent) {
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rot += parent->rotation();
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parent = parent->parentItem();
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}
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if(rot != 0)
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item_to_center->setRotation(item_to_center->rotation() - rot);
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return true;
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}
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