316 lines
12 KiB
C++
316 lines
12 KiB
C++
/************************************************************************
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**
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** @file vcontrolpointspline.cpp
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** @author Roman Telezhynskyi <dismine(at)gmail.com>
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** @date November 15, 2013
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**
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** @brief
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** @copyright
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** This source code is part of the Valentina project, a pattern making
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** program, whose allow create and modeling patterns of clothing.
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** Copyright (C) 2013-2015 Valentina project
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** <https://bitbucket.org/dismine/valentina> All Rights Reserved.
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**
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** Valentina 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 3 of the License, or
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** (at your option) any later version.
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**
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** Valentina 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 Valentina. If not, see <http://www.gnu.org/licenses/>.
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**
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*************************************************************************/
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#include "vcontrolpointspline.h"
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#include <QBrush>
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#include <QEvent>
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#include <QGraphicsLineItem>
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#include <QGraphicsScene>
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#include <QGraphicsSceneMouseEvent>
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#include <QGraphicsView>
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#include <QLineF>
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#include <QList>
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#include <QMessageLogger>
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#include <QPen>
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#include <QPoint>
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#include <QPolygonF>
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#include <QRectF>
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#include <Qt>
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#include "../vwidgets/global.h"
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#include "../vgeometry/vgobject.h"
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#include "../vmisc/vabstractapplication.h"
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#include "vmaingraphicsscene.h"
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#include "vmaingraphicsview.h"
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#include "vgraphicssimpletextitem.h"
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#include "scalesceneitems.h"
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//---------------------------------------------------------------------------------------------------------------------
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VControlPointSpline::VControlPointSpline(const qint32 &indexSpline, SplinePointPosition position, QGraphicsItem *parent)
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: VScenePoint(parent),
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controlLine(nullptr),
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indexSpline(indexSpline),
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position(position),
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freeAngle(true),
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freeLength(true)
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{
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Init();
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VControlPointSpline constructor.
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* @param indexSpline index spline in list.
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* @param position position point in spline.
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* @param controlPoint control point.
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* @param parent parent object.
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*/
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VControlPointSpline::VControlPointSpline(const qint32 &indexSpline, SplinePointPosition position,
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const QPointF &controlPoint, bool freeAngle,
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bool freeLength, QGraphicsItem *parent)
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: VScenePoint(parent),
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controlLine(nullptr),
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indexSpline(indexSpline),
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position(position),
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freeAngle(freeAngle),
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freeLength(freeLength)
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{
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Init();
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this->setFlag(QGraphicsItem::ItemIsMovable, true);
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this->setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
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this->setAcceptHoverEvents(true);
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this->setPos(controlPoint);
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// Do not draw control point in constructor. It creates artefacts if they enabled from start.
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VControlPointSpline::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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QPen lPen = controlLine->pen();
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lPen.setColor(CorrectColor(controlLine, Qt::black));
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controlLine->setPen(lPen);
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QPointF p1, p2;
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VGObject::LineIntersectCircle(QPointF(), ScaledRadius(SceneScale(scene())),
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QLineF( QPointF(), controlLine->line().p1()), p1, p2);
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QLineF line(controlLine->line().p1(), p1);
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controlLine->setLine(line);
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VScenePoint::paint(painter, option, widget);
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief hoverEnterEvent handle hover enter events.
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* @param event hover move event.
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*/
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void VControlPointSpline::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
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{
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if ((flags() & QGraphicsItem::ItemIsMovable) && (freeAngle || freeLength))
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{
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SetItemOverrideCursor(this, cursorArrowOpenHand, 1, 1);
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}
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VScenePoint::hoverEnterEvent(event);
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief itemChange handle item change.
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* @param change change.
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* @param value value.
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* @return value.
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*/
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QVariant VControlPointSpline::itemChange(QGraphicsItem::GraphicsItemChange change, const QVariant &value)
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{
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switch (change)
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{
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case ItemPositionChange:
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{
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if (not freeAngle || not freeLength)
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{
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const QPointF splPoint = controlLine->line().p1() + pos();
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QLineF newLine(splPoint, value.toPointF());// value - new position.
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QLineF oldLine(splPoint, pos());// pos() - old position.
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if (not freeAngle)
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{
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newLine.setAngle(oldLine.angle());
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}
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if (not freeLength)
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{
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newLine.setLength(oldLine.length());
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}
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return newLine.p2();
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}
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break;
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}
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case ItemPositionHasChanged:
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{
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// Each time we move something we call recalculation scene rect. In some cases this can cause moving
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// objects positions. And this cause infinite redrawing. That's why we wait the finish of saving the last
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// move.
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static bool changeFinished = true;
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if (changeFinished)
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{
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changeFinished = false;
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// value - new position.
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emit ControlPointChangePosition(indexSpline, position, value.toPointF());
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if (scene())
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{
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const QList<QGraphicsView *> viewList = scene()->views();
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if (not viewList.isEmpty())
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{
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if (VMainGraphicsView *view = qobject_cast<VMainGraphicsView *>(viewList.at(0)))
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{
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const qreal scale = SceneScale(scene());
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const int xmargin = qCeil(50/scale);
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const int ymargin = qCeil(50/scale);
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const QRectF viewRect = VMainGraphicsView::SceneVisibleArea(view);
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const QRectF itemRect = sceneBoundingRect();
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// If item's rect is bigger than view's rect ensureVisible works very unstable.
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if (itemRect.height() + 2*ymargin < viewRect.height() &&
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itemRect.width() + 2*xmargin < viewRect.width())
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{
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view->EnsureVisibleWithDelay(itemRect, VMainGraphicsView::scrollDelay, xmargin,
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ymargin);
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}
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else
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{
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// Ensure visible only small rect around a cursor
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VMainGraphicsScene *currentScene = qobject_cast<VMainGraphicsScene *>(scene());
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SCASSERT(currentScene)
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const QPointF cursorPosition = currentScene->getScenePos();
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view->EnsureVisibleWithDelay(QRectF(cursorPosition.x()-5/scale,
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cursorPosition.y()-5/scale, 10/scale, 10/scale),
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VMainGraphicsView::scrollDelay);
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}
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}
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}
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}
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changeFinished = true;
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}
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break;
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}
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case QGraphicsItem::ItemSelectedHasChanged:
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emit Selected(value.toBool());
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break;
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default:
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break;
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}
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return VScenePoint::itemChange(change, value);
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VControlPointSpline::mousePressEvent(QGraphicsSceneMouseEvent *event)
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{
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if (event->button() == Qt::LeftButton && event->type() != QEvent::GraphicsSceneMouseDoubleClick)
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{
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if (freeAngle || freeLength)
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{
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SetItemOverrideCursor(this, cursorArrowCloseHand, 1, 1);
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event->accept();
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}
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// Somehow clicking on notselectable object do not clean previous selections.
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if (not (flags() & ItemIsSelectable) && scene())
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{
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scene()->clearSelection();
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}
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}
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VScenePoint::mousePressEvent(event);
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VControlPointSpline::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
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{
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if (event->button() == Qt::LeftButton && event->type() != QEvent::GraphicsSceneMouseDoubleClick)
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{
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if (freeAngle || freeLength)
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{
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SetItemOverrideCursor(this, cursorArrowOpenHand, 1, 1);
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emit Released();
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}
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}
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VScenePoint::mouseReleaseEvent(event);
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VControlPointSpline::contextMenuEvent(QGraphicsSceneContextMenuEvent *event)
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{
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emit ShowContextMenu(event);
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VControlPointSpline::Init()
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{
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m_baseColor = Qt::red;
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SetOnlyPoint(true);
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this->setBrush(QBrush(Qt::NoBrush));
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this->setZValue(100);
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controlLine = new VScaledLine(this);
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controlLine->SetBoldLine(false);
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controlLine->setFlag(QGraphicsItem::ItemStacksBehindParent, true);
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controlLine->setVisible(false);
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VControlPointSpline::SetCtrlLine(const QPointF &controlPoint, const QPointF &splinePoint)
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{
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QPointF p1, p2;
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VGObject::LineIntersectCircle(QPointF(), ScaledRadius(SceneScale(scene())),
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QLineF( QPointF(), splinePoint-controlPoint), p1, p2);
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QLineF line(splinePoint-controlPoint, p1);
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controlLine->setFlag(QGraphicsItem::ItemSendsGeometryChanges, false);
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controlLine->setLine(line);
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controlLine->setVisible(not line.isNull());
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controlLine->setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief RefreshCtrlPoint refresh the control point.
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* @param indexSpline index spline in list.
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* @param pos position point in spline.
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* @param controlPoint control point.
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* @param splinePoint spline point.
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*/
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void VControlPointSpline::RefreshCtrlPoint(const qint32 &indexSpline, SplinePointPosition pos,
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const QPointF &controlPoint, const QPointF &splinePoint, bool freeAngle,
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bool freeLength)
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{
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if (this->indexSpline == indexSpline && this->position == pos)
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{
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this->freeAngle = freeAngle;
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this->freeLength = freeLength;
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this->setPos(controlPoint);
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SetCtrlLine(controlPoint, splinePoint);
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief setEnabledPoint disable or enable control point.
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* @param enable true - enable.
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*/
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void VControlPointSpline::setEnabledPoint(bool enable)
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{
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setEnabled(enable);
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controlLine->setEnabled(enable);
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}
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