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Element editor : move all graphics part in a single directory
git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@3628 bfdf4180-ca20-0410-9c96-a3a8aa849046
This commit is contained in:
blacksun
523
sources/editor/graphicspart/partline.cpp
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523
sources/editor/graphicspart/partline.cpp
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/*
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Copyright 2006-2014 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 "partline.h"
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#include <cmath>
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/**
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Constructeur
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@param editor L'editeur d'element concerne
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@param parent Le QGraphicsItem parent de cette ligne
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@param scene La scene sur laquelle figure cette ligne
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*/
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PartLine::PartLine(QETElementEditor *editor, QGraphicsItem *parent, QGraphicsScene *scene) :
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CustomElementGraphicPart(editor),
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QGraphicsLineItem(parent, scene),
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first_end(Qet::None),
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first_length(1.5),
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second_end(Qet::None),
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second_length(1.5)
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{
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setFlags(QGraphicsItem::ItemIsSelectable);
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#if QT_VERSION >= 0x040600
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setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
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#endif
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setAcceptedMouseButtons(Qt::LeftButton);
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}
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/// Destructeur
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PartLine::~PartLine() {
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}
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/**
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@param end_type Type d'extremite
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@return Le nombre de "longueurs" requises pour dessiner une extremite de type end_type
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*/
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uint PartLine::requiredLengthForEndType(const Qet::EndType &end_type) {
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uint length_count_required = 0;
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if (end_type == Qet::Circle || end_type == Qet::Diamond) {
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length_count_required = 2;
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} else if (end_type == Qet::Simple || end_type == Qet::Triangle) {
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length_count_required = 1;
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}
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return(length_count_required);
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}
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/**
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Dessine la ligne
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@param painter QPainter a utiliser pour rendre le dessin
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@param options Options pour affiner le rendu
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@param widget Widget sur lequel le rendu est effectue
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*/
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void PartLine::paint(QPainter *painter, const QStyleOptionGraphicsItem *options, QWidget *widget) {
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Q_UNUSED(widget);
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// inutile de dessiner une ligne nulle
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if (line().p1() == line().p2()) return;
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applyStylesToQPainter(*painter);
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QPen t = painter -> pen();
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t.setJoinStyle(Qt::MiterJoin);
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t.setCosmetic(options && options -> levelOfDetail < 1.0);
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if (isSelected()) {
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t.setColor(Qt::red);
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}
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painter -> setPen(t);
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QPointF point1(line().p1());
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QPointF point2(line().p2());
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qreal line_length(line().length());
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qreal pen_width = painter -> pen().widthF();
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qreal length1 = first_length;
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qreal length2 = second_length;
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//debugPaint(painter);
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// determine s'il faut dessiner les extremites
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bool draw_1st_end, draw_2nd_end;
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qreal reduced_line_length = line_length - (length1 * requiredLengthForEndType(first_end));
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draw_1st_end = first_end && reduced_line_length >= 0;
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if (draw_1st_end) {
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reduced_line_length -= (length2 * requiredLengthForEndType(second_end));
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} else {
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reduced_line_length = line_length - (length2 * requiredLengthForEndType(second_end));
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}
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draw_2nd_end = second_end && reduced_line_length >= 0;
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// dessine la premiere extremite
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QPointF start_point, stop_point;
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if (draw_1st_end) {
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QList<QPointF> four_points1(fourEndPoints(point1, point2, length1));
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if (first_end == Qet::Circle) {
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painter -> drawEllipse(QRectF(four_points1[0] - QPointF(length1, length1), QSizeF(length1 * 2.0, length1 * 2.0)));
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start_point = four_points1[1];
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} else if (first_end == Qet::Diamond) {
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painter -> drawPolygon(QPolygonF() << four_points1[1] << four_points1[2] << point1 << four_points1[3]);
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start_point = four_points1[1];
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} else if (first_end == Qet::Simple) {
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painter -> drawPolyline(QPolygonF() << four_points1[3] << point1 << four_points1[2]);
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start_point = point1;
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} else if (first_end == Qet::Triangle) {
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painter -> drawPolygon(QPolygonF() << four_points1[0] << four_points1[2] << point1 << four_points1[3]);
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start_point = four_points1[0];
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}
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// ajuste le depart selon l'epaisseur du trait
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if (pen_width && (first_end == Qet::Simple || first_end == Qet::Circle)) {
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start_point = QLineF(start_point, point2).pointAt(pen_width / 2.0 / line_length);
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}
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} else {
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start_point = point1;
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}
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// dessine la seconde extremite
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if (draw_2nd_end) {
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QList<QPointF> four_points2(fourEndPoints(point2, point1, length2));
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if (second_end == Qet::Circle) {
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painter -> drawEllipse(QRectF(four_points2[0] - QPointF(length2, length2), QSizeF(length2 * 2.0, length2 * 2.0)));
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stop_point = four_points2[1];
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} else if (second_end == Qet::Diamond) {
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painter -> drawPolygon(QPolygonF() << four_points2[2] << point2 << four_points2[3] << four_points2[1]);
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stop_point = four_points2[1];
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} else if (second_end == Qet::Simple) {
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painter -> drawPolyline(QPolygonF() << four_points2[3] << point2 << four_points2[2]);
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stop_point = point2;
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} else if (second_end == Qet::Triangle) {
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painter -> drawPolygon(QPolygonF() << four_points2[0] << four_points2[2] << point2 << four_points2[3] << four_points2[0]);
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stop_point = four_points2[0];
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}
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// ajuste l'arrivee selon l'epaisseur du trait
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if (pen_width && (second_end == Qet::Simple || second_end == Qet::Circle)) {
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stop_point = QLineF(point1, stop_point).pointAt((line_length - (pen_width / 2.0)) / line_length);
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}
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} else {
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stop_point = point2;
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}
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painter -> drawLine(start_point, stop_point);
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}
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/**
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Exporte la ligne en XML
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@param xml_document Document XML a utiliser pour creer l'element XML
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@return un element XML decrivant la ligne
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*/
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const QDomElement PartLine::toXml(QDomDocument &xml_document) const {
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QPointF p1(sceneP1());
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QPointF p2(sceneP2());
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QDomElement xml_element = xml_document.createElement("line");
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xml_element.setAttribute("x1", QString("%1").arg(p1.x()));
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xml_element.setAttribute("y1", QString("%1").arg(p1.y()));
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xml_element.setAttribute("x2", QString("%1").arg(p2.x()));
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xml_element.setAttribute("y2", QString("%1").arg(p2.y()));
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xml_element.setAttribute("end1", Qet::endTypeToString(first_end));
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xml_element.setAttribute("length1", QString("%1").arg(first_length));
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xml_element.setAttribute("end2", Qet::endTypeToString(second_end));
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xml_element.setAttribute("length2", QString("%1").arg(second_length));
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stylesToXml(xml_element);
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return(xml_element);
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}
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/**
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Importe les proprietes d'une ligne depuis un element XML
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@param qde Element XML a lire
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*/
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void PartLine::fromXml(const QDomElement &qde) {
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stylesFromXml(qde);
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setLine(
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QLineF(
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mapFromScene(
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qde.attribute("x1", "0").toDouble(),
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qde.attribute("y1", "0").toDouble()
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),
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mapFromScene(
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qde.attribute("x2", "0").toDouble(),
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qde.attribute("y2", "0").toDouble()
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)
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)
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);
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first_end = Qet::endTypeFromString(qde.attribute("end1"));
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first_length = qde.attribute("length1", "1.5").toDouble();
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second_end = Qet::endTypeFromString(qde.attribute("end2"));
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second_length = qde.attribute("length2", "1.5").toDouble();
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}
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/**
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* @brief PartLine::setX1
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* set X of P1
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* @param x1
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*/
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void PartLine::setX1(qreal x1) {
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QPointF p = line().p1();
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p.setX(x1);
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setLine(QLineF(p, line().p2()));
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}
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/**
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* @brief PartLine::setY1
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* set y of P1
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* @param y1
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*/
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void PartLine::setY1(qreal y1) {
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QPointF p = line().p1();
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p.setY(y1);
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setLine(QLineF(p, line().p2()));
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}
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/**
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* @brief PartLine::setP1
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* set first point to P1
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* @param p1
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*/
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void PartLine::setP1(QPointF p1) {
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setLine(QLineF(p1, line().p2()));
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}
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/**
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* @brief PartLine::setX2
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* set x of P2
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* @param x2
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*/
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void PartLine::setX2(qreal x2) {
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QPointF p = line().p2();
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p.setX(x2);
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setLine(QLineF(line().p1(), p));
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}
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/**
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* @brief PartLine::setY2
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* set y of P2
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* @param y2
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*/
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void PartLine::setY2(qreal y2) {
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QPointF p = line().p2();
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p.setY(y2);
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setLine(QLineF(line().p1(), p));
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}
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/**
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* @brief PartLine::setP2
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* set second point to P2
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* @param p2
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*/
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void PartLine::setP2(QPointF p2) {
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setLine(QLineF(line().p1(), p2));
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}
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/**
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Gere les changements intervenant sur cette partie
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@param change Type de changement
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@param value Valeur numerique relative au changement
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*/
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QVariant PartLine::itemChange(GraphicsItemChange change, const QVariant &value) {
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if (scene()) {
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if (change == QGraphicsItem::ItemPositionChange || change == QGraphicsItem::ItemPositionHasChanged) {
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updateCurrentPartEditor();
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}
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}
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return(QGraphicsLineItem::itemChange(change, value));
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}
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/**
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@return le premier point, dans les coordonnees de la scene.
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*/
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QPointF PartLine::sceneP1() const {
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return(mapToScene(line().p1()));
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}
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/**
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@return le second point, dans les coordonnees de la scene.
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*/
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QPointF PartLine::sceneP2() const {
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return(mapToScene(line().p2()));
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}
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/**
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@return la forme selectionnable de la ligne
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*/
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QPainterPath PartLine::shape() const {
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QList<QPointF> points = fourShapePoints();
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QPainterPath t;
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t.setFillRule(Qt::WindingFill);
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t.moveTo(points.at(0));
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t.lineTo(points.at(1));
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t.lineTo(points.at(2));
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t.lineTo(points.at(3));
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t.lineTo(points.at(0));
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// n'en fait pas plus si la ligne se ramene a un point
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if (line().p1() == line().p2()) return(t);
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// ajoute un cercle pour l'extremite 1 si besoin
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if (first_end) {
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QPainterPath t2;
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t2.addEllipse(firstEndCircleRect());
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t.addPath(t2.subtracted(t));
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}
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// ajoute un cercle pour l'extremite 2 si besoin
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if (second_end) {
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QPainterPath t2;
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t2.addEllipse(secondEndCircleRect());
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t.addPath(t2.subtracted(t));
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}
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return(t);
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}
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/**
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@return une liste contenant les deux points de la droite + les 4 points entourant ces deux points
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*/
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QList<QPointF> PartLine::fourShapePoints() const {
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const qreal marge = 2.0;
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// on a donc A(xa , ya) et B(xb, yb)
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QPointF a = line().p1();
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QPointF b = line().p2();
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QList<QPointF> result;
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// cas particulier : la droite se ramene a un point
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if (a == b) {
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result << QPointF(a.x() - marge, a.y() - marge);
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result << QPointF(a.x() - marge, a.y() + marge);
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result << QPointF(a.x() + marge, a.y() + marge);
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result << QPointF(a.x() + marge, a.y() - marge);
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} else {
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// on calcule le vecteur AB : (xb-xa, yb-ya)
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QPointF v_ab = b - a;
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// et la distance AB : racine des coordonnees du vecteur au carre
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qreal ab = sqrt(pow(v_ab.x(), 2) + pow(v_ab.y(), 2));
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// ensuite on definit le vecteur u(a, b) qui est egal au vecteur AB divise
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// par sa longueur et multiplie par la longueur de la marge que tu veux
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// laisser
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QPointF u = v_ab / ab * marge;
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// on definit le vecteur v(-b , a) qui est perpendiculaire a AB
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QPointF v(-u.y(), u.x());
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QPointF m = -u + v; // on a le vecteur M = -u + v
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QPointF n = -u - v; // et le vecteur N=-u-v
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QPointF h = a + m; // H = A + M
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QPointF k = a + n; // K = A + N
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QPointF i = b - n; // I = B - N
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QPointF j = b - m; // J = B - M
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result << h << i << j << k;
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}
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return(result);
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}
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/**
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@return le rectangle encadrant l'integralite de la premiere extremite
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*/
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QRectF PartLine::firstEndCircleRect() const {
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QList<QPointF> interesting_points = fourEndPoints(
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line().p1(),
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line().p2(),
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first_length
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);
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QRectF end_rect(
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interesting_points[0] - QPointF(first_length, first_length),
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QSizeF(2.0 * first_length, 2.0 * first_length)
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);
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return(end_rect);
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}
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/**
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@return le rectangle encadrant l'integralite de la seconde extremite
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*/
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QRectF PartLine::secondEndCircleRect() const {
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QList<QPointF> interesting_points = fourEndPoints(
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line().p2(),
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line().p1(),
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second_length
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);
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||||
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QRectF end_rect(
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interesting_points[0] - QPointF(second_length, second_length),
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QSizeF(2.0 * second_length, 2.0 * second_length)
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);
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||||
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return(end_rect);
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}
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/**
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Affiche differentes composantes du dessin :
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- le boundingRect
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- les point speciaux a chaque extremite
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- la quadrature du cercle a chaque extremite, meme si celle-ci est d'un
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autre type
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*/
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void PartLine::debugPaint(QPainter *painter) {
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painter -> save();
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||||
painter -> setPen(Qt::gray);
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painter -> drawRect(boundingRect());
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||||
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||||
painter -> setPen(Qt::green);
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painter -> drawRect(firstEndCircleRect());
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painter -> drawRect(secondEndCircleRect());
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painter -> setPen(Qt::red);
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foreach(QPointF pointy, fourEndPoints(line().p1(), line().p2(), first_length)) {
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painter -> drawEllipse(pointy, 0.1, 0.1);
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}
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foreach(QPointF pointy, fourEndPoints(line().p2(), line().p1(), second_length)) {
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||||
painter -> drawEllipse(pointy, 0.1, 0.1);
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}
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||||
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||||
painter -> restore();
|
||||
}
|
||||
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||||
/**
|
||||
@return le rectangle delimitant cette partie.
|
||||
*/
|
||||
QRectF PartLine::boundingRect() const {
|
||||
QRectF r(QGraphicsLineItem::boundingRect());
|
||||
|
||||
// le rectangle ainsi obtenu ne doit pas avoir une dimension nulle
|
||||
r.adjust(0.0, 0.0, 0.1, 0.1);
|
||||
|
||||
// cas special : les embouts sortent largement du bounding rect originel
|
||||
if (first_end != Qet::None) {
|
||||
r = r.united(firstEndCircleRect());
|
||||
}
|
||||
|
||||
if (second_end != Qet::None) {
|
||||
r = r.united(secondEndCircleRect());
|
||||
}
|
||||
|
||||
// la taille du bounding rect est ajustee avec une certaine marge
|
||||
qreal adjust = 1.2;
|
||||
r.adjust(-adjust, -adjust, adjust, adjust);
|
||||
return(r);
|
||||
}
|
||||
|
||||
/**
|
||||
@return true si cette partie n'est pas pertinente et ne merite pas d'etre
|
||||
conservee / enregistree.
|
||||
Une ligne est pertinente des lors que ses deux points sont differents
|
||||
*/
|
||||
bool PartLine::isUseless() const {
|
||||
return(sceneP1() == sceneP2());
|
||||
}
|
||||
|
||||
/**
|
||||
@return the minimum, margin-less rectangle this part can fit into, in scene
|
||||
coordinates. It is different from boundingRect() because it is not supposed
|
||||
to imply any margin, and it is different from shape because it is a regular
|
||||
rectangle, not a complex shape.
|
||||
*/
|
||||
QRectF PartLine::sceneGeometricRect() const {
|
||||
return(QRectF(sceneP1(), sceneP2()));
|
||||
}
|
||||
|
||||
/**
|
||||
Start the user-induced transformation, provided this primitive is contained
|
||||
within the \a initial_selection_rect bounding rectangle.
|
||||
*/
|
||||
void PartLine::startUserTransformation(const QRectF &initial_selection_rect) {
|
||||
Q_UNUSED(initial_selection_rect)
|
||||
saved_points_.clear();
|
||||
saved_points_ << sceneP1() << sceneP2();
|
||||
}
|
||||
|
||||
/**
|
||||
Handle the user-induced transformation from \a initial_selection_rect to \a new_selection_rect
|
||||
*/
|
||||
void PartLine::handleUserTransformation(const QRectF &initial_selection_rect, const QRectF &new_selection_rect) {
|
||||
QList<QPointF> mapped_points = mapPoints(initial_selection_rect, new_selection_rect, saved_points_);
|
||||
setLine(QLineF(mapFromScene(mapped_points.at(0)), mapFromScene(mapped_points.at(1))));
|
||||
}
|
||||
|
||||
/**
|
||||
@return Les quatre points interessants a l'extremite d'une droite
|
||||
Ces points sont, dans l'ordre :
|
||||
* O : point sur la ligne, a une distance length de l'extremite
|
||||
* A : point sur la ligne a une distance 2 x length de l'extremite
|
||||
* B : point a une distance length de O - O est le projete de B sur la droite
|
||||
* C : point a une distance length de O - O est le projete de C sur la droite
|
||||
B et C sont situes de part et d'autre de la ligne
|
||||
@param end_point Extremite concernee
|
||||
@param other_point Autre point permettant de definir une ligne
|
||||
@param length Longueur a utiliser entre l'extremite et le point O
|
||||
*/
|
||||
QList<QPointF> PartLine::fourEndPoints(const QPointF &end_point, const QPointF &other_point, const qreal &length) {
|
||||
// vecteur et longueur de la ligne
|
||||
QPointF line_vector = end_point - other_point;
|
||||
qreal line_length = sqrt(pow(line_vector.x(), 2) + pow(line_vector.y(), 2));
|
||||
|
||||
// vecteur unitaire et vecteur perpendiculaire
|
||||
QPointF u(line_vector / line_length * length);
|
||||
QPointF v(-u.y(), u.x());
|
||||
|
||||
// points O, A, B et C
|
||||
QPointF o(end_point - u);
|
||||
QPointF a(o - u);
|
||||
QPointF b(o + v);
|
||||
QPointF c(o - v);
|
||||
|
||||
return(QList<QPointF>() << o << a << b << c);
|
||||
}
|
||||
Reference in New Issue
Block a user