valentina_old/tools/vtoolpoint.cpp
2013-08-05 11:37:56 +03:00

214 lines
8.1 KiB
C++
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

#include "vtoolpoint.h"
#include <QPen>
#include <QBrush>
#include <QDebug>
#include <QGraphicsItem>
#include <cmath>
#include "../container/vpointf.h"
#include "../widgets/vmaingraphicsscene.h"
VToolPoint::VToolPoint(VDomDocument *doc, VContainer *data, qint64 id,
QGraphicsItem *parent):VAbstractTool(doc, data, id), QGraphicsEllipseItem(parent){
radius = 1.5*PrintDPI/25.4;
//create circle
VPointF point = data->GetPoint(id);
QRectF rec = QRectF(point.x(), point.y(), radius*2, radius*2);
rec.translate(point.x()-rec.center().x(), point.y()-rec.center().y());
this->setRect(rec);
this->setPen(QPen(Qt::black, widthHairLine));
this->setBrush(QBrush(Qt::NoBrush));
this->setFlag(QGraphicsItem::ItemIsSelectable, true);
this->setAcceptHoverEvents(true);
//Тексто мітка точки
namePoint = new VGraphicsSimpleTextItem(point.name(), this);
rec = this->rect();
namePoint->setPos(QPointF(rec.center().x()+point.mx(), rec.center().y()+point.my()));
connect(namePoint, &VGraphicsSimpleTextItem::NameChangePosition, this,
&VToolPoint::NameChangePosition);
//Лінія, що з'єднує точку і мітку
QRectF nameRec = namePoint->sceneBoundingRect();
QPointF p1, p2;
LineIntersectCircle(rec.center(), radius, QLineF(rec.center(), nameRec.center()), p1, p2);
QPointF pRec = LineIntersectRect(nameRec, QLineF(rec.center(), nameRec.center()));
lineName = new QGraphicsLineItem(QLineF(p1, pRec), this);
lineName->setFlag(QGraphicsItem::ItemStacksBehindParent, true);
if(QLineF(p1, pRec).length() <= 4*PrintDPI/25.4){
lineName->setVisible(false);
} else {
lineName->setVisible(true);
}
}
void VToolPoint::NameChangePosition(const QPointF pos){
VPointF point = VAbstractTool::data->GetPoint(id);
QRectF rec = this->rect();
point.setMx(pos.x() - rec.center().x());
point.setMy(pos.y() - rec.center().y());
RefreshLine();
LiteUpdateFromGui(point.mx(), point.my());
VAbstractTool::data->UpdatePoint(id, point);
}
QPointF VToolPoint::LineIntersectRect(QRectF rec, QLineF line) const{
qreal x1, y1, x2, y2;
rec.getCoords(&x1, &y1, &x2, &y2);
QPointF point;
QLineF::IntersectType type = line.intersect(QLineF(QPointF(x1,y1), QPointF(x1,y2)),&point);
if ( type == QLineF::BoundedIntersection ){
return point;
}
type = line.intersect(QLineF(QPointF(x1,y1), QPointF(x2,y1)),&point);
if ( type == QLineF::BoundedIntersection ){
return point;
}
type = line.intersect(QLineF(QPointF(x1,y2), QPointF(x2,y2)),&point);
if ( type == QLineF::BoundedIntersection ){
return point;
}
type = line.intersect(QLineF(QPointF(x2,y1), QPointF(x2,y2)),&point);
if ( type == QLineF::BoundedIntersection ){
return point;
}
Q_ASSERT_X(type != QLineF::BoundedIntersection, Q_FUNC_INFO, "Немає точки перетину.");
return point;
}
void VToolPoint::RefreshLine(){
QRectF nameRec = namePoint->sceneBoundingRect();
QPointF p1, p2;
QRectF rec = this->rect();
LineIntersectCircle(rec.center(), radius, QLineF(rec.center(), nameRec.center()), p1, p2);
QPointF pRec = LineIntersectRect(nameRec, QLineF(rec.center(), nameRec.center()));
lineName->setLine(QLineF(p1, pRec));
if(QLineF(p1, pRec).length() <= 4*PrintDPI/25.4){
lineName->setVisible(false);
} else {
lineName->setVisible(true);
}
}
qint32 VToolPoint::LineIntersectCircle(QPointF center, qreal radius, QLineF line, QPointF &p1,
QPointF &p2) const{
const qreal eps = 1e-8;
//коефіцієнти для рівняння відрізку
qreal a = line.p2().y() - line.p1().y();
qreal b = line.p1().x() - line.p2().x();
// В даному випадку не використовується.
//qreal c = - a * line.p1().x() - b * line.p1().y();
// проекция центра окружности на прямую
QPointF p = ClosestPoint (line, center);
// сколько всего решений?
qint32 flag = 0;
qreal d = QLineF (center, p).length();
if (qAbs (d - radius) <= eps){
flag = 1;
} else {
if (radius > d){
flag = 2;
} else {
return 0;
}
}
// находим расстояние от проекции до точек пересечения
qreal k = sqrt (radius * radius - d * d);
qreal t = QLineF (QPointF (0, 0), QPointF (b, - a)).length();
// добавляем к проекции векторы направленные к точкам пеерсечения
p1 = addVector (p, QPointF (0, 0), QPointF (- b, a), k / t);
p2 = addVector (p, QPointF (0, 0), QPointF (b, - a), k / t);
return flag;
}
QPointF VToolPoint::ClosestPoint(QLineF line, QPointF p) const{
QLineF lineP2pointFrom = QLineF(line.p2(), p);
qreal angle = 180-line.angleTo(lineP2pointFrom)-90;
QLineF pointFromlineP2 = QLineF(p, line.p2());
pointFromlineP2.setAngle(pointFromlineP2.angle()+angle);
QPointF point;
QLineF::IntersectType type = pointFromlineP2.intersect(line,&point);
if ( type == QLineF::BoundedIntersection ){
return point;
} else{
if ( type == QLineF::NoIntersection || type == QLineF::UnboundedIntersection ){
Q_ASSERT_X(type != QLineF::BoundedIntersection, Q_FUNC_INFO, "Немає точки перетину.");
return point;
}
}
return point;
}
QPointF VToolPoint::addVector(QPointF p, QPointF p1, QPointF p2, qreal k) const{
return QPointF (p.x() + (p2.x() - p1.x()) * k, p.y() + (p2.y() - p1.y()) * k);
}
void VToolPoint::LiteUpdateFromGui(qreal mx, qreal my){
QDomElement domElement = doc->elementById(QString().setNum(id));
if(domElement.isElement()){
domElement.setAttribute("mx", QString().setNum(mx/PrintDPI*25.4));
domElement.setAttribute("my", QString().setNum(my/PrintDPI*25.4));
emit haveLiteChange();
}
}
void VToolPoint::ChangedActivDraw(const QString newName){
if(nameActivDraw == newName){
this->setPen(QPen(Qt::black, widthHairLine));
this->setFlag(QGraphicsItem::ItemIsSelectable, true);
this->setAcceptHoverEvents(true);
namePoint->setFlag(QGraphicsItem::ItemIsMovable, true);
namePoint->setFlag(QGraphicsItem::ItemIsSelectable, true);
namePoint->setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
namePoint->setBrush(QBrush(Qt::black));
namePoint->setAcceptHoverEvents(true);
lineName->setPen(QPen(Qt::black, widthHairLine));
VAbstractTool::ChangedActivDraw(newName);
} else {
this->setPen(QPen(Qt::gray, widthHairLine));
this->setFlag(QGraphicsItem::ItemIsSelectable, false);
this->setAcceptHoverEvents (false);
namePoint->setFlag(QGraphicsItem::ItemIsMovable, false);
namePoint->setFlag(QGraphicsItem::ItemIsSelectable, false);
namePoint->setFlag(QGraphicsItem::ItemSendsGeometryChanges, false);
namePoint->setBrush(QBrush(Qt::gray));
namePoint->setAcceptHoverEvents(false);
lineName->setPen(QPen(Qt::gray, widthHairLine));
VAbstractTool::ChangedActivDraw(newName);
}
}
void VToolPoint::RefreshGeometry(){
VPointF point = VAbstractTool::data->GetPoint(id);
QRectF rec = QRectF(point.x(), point.y(), radius*2, radius*2);
rec.translate(point.x()-rec.center().x(), point.y()-rec.center().y());
this->setRect(rec);
rec = this->rect();
namePoint->setText(point.name());
namePoint->setPos(QPointF(rec.center().x()+point.mx(), rec.center().y()+point.my()));
RefreshLine();
}
void VToolPoint::mouseReleaseEvent(QGraphicsSceneMouseEvent *event){
if(event->button() == Qt::LeftButton){
emit ChoosedTool(id, Scene::Point);
}
QGraphicsItem::mouseReleaseEvent(event);
}
void VToolPoint::hoverMoveEvent(QGraphicsSceneHoverEvent *event){
Q_UNUSED(event);
this->setPen(QPen(Qt::black, widthMainLine));
}
void VToolPoint::hoverLeaveEvent(QGraphicsSceneHoverEvent *event){
Q_UNUSED(event);
this->setPen(QPen(Qt::black, widthHairLine));
}
VToolPoint::~VToolPoint(){
}