valentina/src/libs/vwidgets/vscenepoint.cpp

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/************************************************************************
**
** @file
** @author Roman Telezhynskyi <dismine(at)gmail.com>
** @date 14 6, 2017
**
** @brief
** @copyright
** This source code is part of the Valentine project, a pattern making
** program, whose allow create and modeling patterns of clothing.
** Copyright (C) 2017 Valentina project
** <https://bitbucket.org/dismine/valentina> All Rights Reserved.
**
** Valentina is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** Valentina is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with Valentina. If not, see <http://www.gnu.org/licenses/>.
**
*************************************************************************/
#include "vscenepoint.h"
#include "../vmisc/def.h"
#include "../vgeometry/vpointf.h"
#include "global.h"
#include "vgraphicssimpletextitem.h"
#include "scalesceneitems.h"
#include <QBrush>
#include <QFont>
#include <QPen>
//---------------------------------------------------------------------------------------------------------------------
VScenePoint::VScenePoint(QGraphicsItem *parent)
: QGraphicsEllipseItem(parent),
m_namePoint(nullptr),
m_lineName(nullptr),
m_onlyPoint(false),
m_isHovered(false),
m_showLabel(true),
m_baseColor(Qt::black)
{
m_namePoint = new VGraphicsSimpleTextItem(this);
m_lineName = new VScaledLine(this);
m_lineName->SetBasicWidth(widthHairLine);
m_lineName->setLine(QLineF(0, 0, 1, 0));
m_lineName->setVisible(false);
this->setBrush(QBrush(Qt::NoBrush));
this->setAcceptHoverEvents(true);
this->setFlag(QGraphicsItem::ItemIsFocusable, true);// For keyboard input focus
}
//---------------------------------------------------------------------------------------------------------------------
void VScenePoint::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
const qreal scale = SceneScale(scene());
if (m_namePoint->BaseFontSize()*scale < 5)
{
m_namePoint->setVisible(false);
m_lineName->setVisible(false);
}
else
{
ScaleMainPenWidth(scale);
ScaleCircleSize(this, scale);
if (not m_onlyPoint)
{
m_namePoint->setVisible(m_showLabel);
QPen lPen = m_lineName->pen();
lPen.setColor(CorrectColor(m_lineName, Qt::black));
m_lineName->setPen(lPen);
RefreshLine();
}
}
QGraphicsEllipseItem::paint(painter, option, widget);
}
//---------------------------------------------------------------------------------------------------------------------
void VScenePoint::RefreshPointGeometry(const VPointF &point)
{
setFlag(QGraphicsItem::ItemSendsGeometryChanges, false);
setPos(static_cast<QPointF>(point));
setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
m_showLabel = point.IsShowLabel();
m_namePoint->blockSignals(true);
m_namePoint->setText(point.name());
m_namePoint->setPos(QPointF(point.mx(), point.my()));
m_namePoint->setVisible(m_showLabel);
m_namePoint->blockSignals(false);
RefreshLine();
}
//---------------------------------------------------------------------------------------------------------------------
void VScenePoint::SetOnlyPoint(bool value)
{
m_onlyPoint = value;
m_namePoint->setVisible(not m_onlyPoint);
m_lineName->setVisible(not m_onlyPoint);
}
//---------------------------------------------------------------------------------------------------------------------
bool VScenePoint::IsOnlyPoint() const
{
return m_onlyPoint;
}
//---------------------------------------------------------------------------------------------------------------------
void VScenePoint::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
{
m_isHovered = true;
QGraphicsEllipseItem::hoverEnterEvent(event);
}
//---------------------------------------------------------------------------------------------------------------------
void VScenePoint::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
{
m_isHovered = false;
QGraphicsEllipseItem::hoverLeaveEvent(event);
}
//---------------------------------------------------------------------------------------------------------------------
void VScenePoint::RefreshLine()
{
QRectF nRec = m_namePoint->sceneBoundingRect();
nRec.translate(- scenePos());
if (not rect().intersects(nRec))
{
const QRectF nameRec = m_namePoint->sceneBoundingRect();
QPointF p1;
QPointF p2;
VGObject::LineIntersectCircle(QPointF(), ScaledRadius(SceneScale(scene())),
QLineF(QPointF(), nameRec.center() - scenePos()), p1, p2);
const QPointF pRec = VGObject::LineIntersectRect(nameRec, QLineF(scenePos(), nameRec.center()));
if (QLineF(p1, pRec - scenePos()).length() <= ToPixel(4, Unit::Mm))
{
m_lineName->setVisible(false);
}
else
{
m_lineName->setLine(QLineF(p1, pRec - scenePos()));
m_lineName->setVisible(m_showLabel);
}
}
else
{
m_lineName->setVisible(false);
}
}
//---------------------------------------------------------------------------------------------------------------------
void VScenePoint::ScaleMainPenWidth(qreal scale)
{
const qreal width = ScaleWidth(m_isHovered ? widthMainLine : widthHairLine, scale);
setPen(QPen(CorrectColor(this, m_baseColor), width));
}