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240 lines
10 KiB
C++
240 lines
10 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 Valentine 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 <QGraphicsSceneMouseEvent>
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#include <QGraphicsView>
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#include <QPen>
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#include <QStyleOptionGraphicsItem>
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#include "vmaingraphicsview.h"
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#include "vmaingraphicsscene.h"
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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 splinePoint spline 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, const QPointF &splinePoint, Unit patternUnit,
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QGraphicsItem *parent)
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:QGraphicsEllipseItem(parent), radius(0), controlLine(nullptr), indexSpline(indexSpline), position(position),
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patternUnit(patternUnit)
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{
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//create circle
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radius = (1.5/*mm*/ / 25.4) * PrintDPI;
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QRectF rec = QRectF(0, 0, radius*2, radius*2);
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rec.translate(-rec.center().x(), -rec.center().y());
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this->setRect(rec);
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this->setPen(QPen(Qt::black, ToPixel(WidthHairLine(patternUnit), patternUnit)));
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this->setBrush(QBrush(Qt::NoBrush));
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this->setFlag(QGraphicsItem::ItemIsSelectable, true);
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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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this->setZValue(100);
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QPointF p1, p2;
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VGObject::LineIntersectCircle(QPointF(), radius, QLineF( QPointF(), splinePoint-controlPoint), p1, p2);
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controlLine = new QGraphicsLineItem(QLineF(splinePoint-controlPoint, p1), this);
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controlLine->setPen(QPen(Qt::red, ToPixel(WidthHairLine(patternUnit), patternUnit)));
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controlLine->setFlag(QGraphicsItem::ItemStacksBehindParent, true);
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}
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//---------------------------------------------------------------------------------------------------------------------
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VControlPointSpline::~VControlPointSpline()
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{
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//Disable cursor-arrow-openhand
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RestoreOverrideCursor(cursorArrowOpenHand);
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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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/* From question on StackOverflow
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* https://stackoverflow.com/questions/10985028/how-to-remove-border-around-qgraphicsitem-when-selected
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*
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* There's no interface to disable the drawing of the selection border for the build-in QGraphicsItems. The only way
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* I can think of is derive your own items from the build-in ones and override the paint() function:*/
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QStyleOptionGraphicsItem myOption(*option);
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myOption.state &= ~QStyle::State_Selected;
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QGraphicsEllipseItem::paint(painter, &myOption, 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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this->setPen(QPen(Qt::black, ToPixel(WidthMainLine(patternUnit), patternUnit)));
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SetOverrideCursor(cursorArrowOpenHand, 1, 1);
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QGraphicsEllipseItem::hoverEnterEvent(event);
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VControlPointSpline::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
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{
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this->setPen(QPen(Qt::black, ToPixel(WidthHairLine(patternUnit), patternUnit)));
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//Disable cursor-arrow-openhand
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RestoreOverrideCursor(cursorArrowOpenHand);
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QGraphicsEllipseItem::hoverLeaveEvent(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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if (change == ItemPositionChange && scene())
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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 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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QPointF newPos = value.toPointF();
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emit ControlPointChangePosition(indexSpline, position, newPos);
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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 (QGraphicsView *view = viewList.at(0))
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{
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const int xmargin = 50;
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const int ymargin = 50;
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const QRectF viewRect = VMainGraphicsView::SceneVisibleArea(view);
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const QRectF itemRect = mapToScene(boundingRect()).boundingRect();
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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->ensureVisible(itemRect, xmargin, 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->ensureVisible(QRectF(cursorPosition.x()-5, cursorPosition.y()-5, 10, 10));
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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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}
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return QGraphicsItem::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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SetOverrideCursor(cursorArrowCloseHand, 1, 1);
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}
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QGraphicsEllipseItem::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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//Disable cursor-arrow-closehand
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RestoreOverrideCursor(cursorArrowCloseHand);
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}
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QGraphicsEllipseItem::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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/**
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* @brief RefreshLine refresh line 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::RefreshLine(const qint32 &indexSpline, SplinePointPosition pos,
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const QPointF &controlPoint, const QPointF &splinePoint)
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{
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if (this->indexSpline == indexSpline && this->position == pos)
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{
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QPointF p1, p2;
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VGObject::LineIntersectCircle(QPointF(), radius, QLineF( QPointF(), splinePoint-controlPoint), p1, p2);
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controlLine->setLine(QLineF(splinePoint-controlPoint, p1));
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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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if (enable == true)
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{
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this->setPen(QPen(Qt::black, ToPixel(WidthHairLine(patternUnit), patternUnit)));
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this->setFlag(QGraphicsItem::ItemIsSelectable, true);
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this->setFlag(QGraphicsItem::ItemIsMovable, true);
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this->setAcceptHoverEvents(true);
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}
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else
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{
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this->setPen(QPen(Qt::gray, ToPixel(WidthHairLine(patternUnit), patternUnit)));
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this->setFlag(QGraphicsItem::ItemIsSelectable, false);
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this->setFlag(QGraphicsItem::ItemIsMovable, false);
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this->setAcceptHoverEvents(false);
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}
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}
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