valentina/src/libs/vtools/visualization/visline.cpp
Roman Telezhynskyi e781b8252d Cut less scene rect size for showing axis.
--HG--
branch : develop
2015-12-04 22:21:07 +02:00

154 lines
5.3 KiB
C++

/************************************************************************
**
** @file visline.cpp
** @author Roman Telezhynskyi <dismine(at)gmail.com>
** @date 21 7, 2014
**
** @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) 2013-2015 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 "visline.h"
#include "../tools/drawTools/vdrawtool.h"
#include <QtCore/qmath.h>
//---------------------------------------------------------------------------------------------------------------------
VisLine::VisLine(const VContainer *data, QGraphicsItem *parent)
:Visualization(data), QGraphicsLineItem(parent)
{
this->setZValue(1);// Show on top real tool
InitPen();
}
//---------------------------------------------------------------------------------------------------------------------
VisLine::~VisLine()
{}
//---------------------------------------------------------------------------------------------------------------------
qreal VisLine::CorrectAngle(const qreal &angle) const
{
qreal ang = angle;
if (angle > 360)
{
ang = angle - 360.0 * qFloor(angle/360);
}
switch (qFloor((qAbs(ang)+22.5)/45))
{
case 0: // <22.5
return 0;
case 1: // <67.5
return 45;
case 2: // <112.5
return 90;
case 3: // <157.5
return 135;
case 4: // <202.5
return 180;
case 5: // <247.5
return 225;
case 6: // < 292.5
return 270;
case 7: // <337.5
return 315;
default: // <360
return 0;
}
}
//---------------------------------------------------------------------------------------------------------------------
QPointF VisLine::Ray(const QPointF &firstPoint, const qreal &angle) const
{
if (this->scene() == nullptr)
{
QLineF line = QLineF(firstPoint, Visualization::scenePos);
line.setAngle(angle);
return line.p2();// We can't find ray because item doesn't have scene. We will return cursor position on scene.
}
QRectF scRect = this->scene()->sceneRect();
//Limit size of the scene rect. Axis that has same size as scene rect cause scene size growth.
QLineF line1 = QLineF(scRect.topLeft(), scRect.bottomRight());
line1.setLength(2);
QLineF line2 = QLineF(scRect.bottomRight(), scRect.topLeft());
line2.setLength(2);
scRect = QRectF(line1.p2(), line2.p2());
if (QGuiApplication::keyboardModifiers() == Qt::ShiftModifier)
{
return VGObject::BuildRay(firstPoint, CorrectAngle(angle), scRect);
}
else
{
return VGObject::BuildRay(firstPoint, angle, scRect);
}
}
//---------------------------------------------------------------------------------------------------------------------
QPointF VisLine::Ray(const QPointF &firstPoint) const
{
QLineF line = QLineF(firstPoint, Visualization::scenePos);
return Ray(firstPoint, line.angle());
}
//---------------------------------------------------------------------------------------------------------------------
QLineF VisLine::Axis(const QPointF &p, const qreal &angle) const
{
QPointF endP1 = Ray(p, angle+180);
QPointF endP2 = Ray(p, angle);
return QLineF(endP1, endP2);
}
//---------------------------------------------------------------------------------------------------------------------
QLineF VisLine::Axis(const QPointF &p1, const QPointF &p2) const
{
QLineF line(p1, p2);
return Axis(p1, line.angle());
}
//---------------------------------------------------------------------------------------------------------------------
void VisLine::InitPen()
{
this->setPen(QPen(mainColor, qApp->toPixel(WidthHairLine(*Visualization::data->GetPatternUnit()))/factor,
lineStyle));
}
//---------------------------------------------------------------------------------------------------------------------
void VisLine::AddOnScene()
{
AddItem(this);
}
//---------------------------------------------------------------------------------------------------------------------
void VisLine::DrawRay(QGraphicsLineItem *lineItem, const QPointF &p, const QPointF &pTangent, const QColor &color,
Qt::PenStyle style)
{
SCASSERT (lineItem != nullptr);
const qreal angle = QLineF(p, pTangent).angle();
const QPointF endRay = Ray(p, angle);
const QLineF tangent = VGObject::BuildLine(p, QLineF(p, endRay).length(), angle);
DrawLine(lineItem, tangent, color, style);
}