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create/src/Mod/TechDraw/Gui/QGISectionLine.cpp

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/***************************************************************************
* Copyright (c) 2016 WandererFan <wandererfan@gmail.com> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library 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 Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#include "PreCompiled.h"
#ifndef _PreComp_
#include <QPainter>
#include <QPainterPath>
#include <QPainterPathStroker>
#include <QStyleOptionGraphicsItem>
#endif
#include <App/Application.h>
#include <App/Material.h>
#include <Base/Console.h>
#include <Base/Parameter.h>
//#include <Mod/TechDraw/App/Preferences.h>
#include <Mod/TechDraw/App/DrawUtil.h>
#include <qmath.h>
#include "Rez.h"
#include "PreferencesGui.h"
#include "QGIView.h"
#include "QGISectionLine.h"
#define ANSISTANDARD 0
#define ISOSTANDARD 1
using namespace TechDrawGui;
using namespace TechDraw;
QGISectionLine::QGISectionLine()
{
m_symbol = "";
m_symSize = 0.0;
m_extLen = 1.5 * Rez::guiX(QGIArrow::getPrefArrowSize());
m_arrowSize = QGIArrow::getPrefArrowSize();
m_line = new QGraphicsPathItem();
addToGroup(m_line);
m_arrow1 = new QGIArrow();
addToGroup(m_arrow1);
m_arrow2 = new QGIArrow();
addToGroup(m_arrow2);
m_symbol1 = new QGCustomText();
addToGroup(m_symbol1);
m_symbol2 = new QGCustomText();
addToGroup(m_symbol2);
setWidth(Rez::guiX(0.75));
setStyle(getSectionStyle());
setColor(getSectionColor());
}
void QGISectionLine::draw()
{
prepareGeometryChange();
int format = getPrefSectionStandard();
if (format == ANSISTANDARD) { //"ASME"/"ANSI"
extensionEndsTrad();
} else {
extensionEndsISO();
}
makeLine();
makeArrows();
makeSymbols();
update();
}
void QGISectionLine::makeLine()
{
QPainterPath pp;
pp.moveTo(m_beginExt1);
pp.lineTo(m_endExt1);
pp.moveTo(m_beginExt2);
pp.lineTo(m_endExt2);
pp.moveTo(m_start);
pp.lineTo(m_end);
m_line->setPath(pp);
}
void QGISectionLine::makeArrows()
{
int format = getPrefSectionStandard();
if (format == ANSISTANDARD) {
makeArrowsTrad();
} else {
makeArrowsISO();
}
}
//make Euro (ISO) Arrows
void QGISectionLine::makeArrowsISO()
{
double arrowRotation = 0.0;
m_arrowDir.Normalize();
double angle = atan2f(m_arrowDir.y,m_arrowDir.x);
if (angle < 0.0) {
angle = 2 * M_PI + angle;
}
arrowRotation = 360.0 - angle * (180.0/M_PI); //convert to Qt rotation (clockwise degrees)
m_arrow1->setStyle(0);
m_arrow1->setSize(QGIArrow::getPrefArrowSize());
m_arrow1->setPos(m_start);
m_arrow1->draw();
m_arrow1->setRotation(arrowRotation); //rotation = 0 ==> -> horizontal, pointing right
m_arrow2->setStyle(0);
m_arrow2->setSize(QGIArrow::getPrefArrowSize());
m_arrow2->setPos(m_end);
m_arrow2->draw();
m_arrow2->setRotation(arrowRotation);
}
//make traditional (ASME) section arrows
void QGISectionLine::makeArrowsTrad()
{
double arrowRotation = 0.0;
m_arrowDir.Normalize();
double angle = atan2f(m_arrowDir.y,m_arrowDir.x);
if (angle < 0.0) {
angle = 2 * M_PI + angle;
}
arrowRotation = 360.0 - angle * (180.0/M_PI); //convert to Qt rotation (clockwise degrees)
QPointF posArrow1,posArrow2;
QPointF offsetDir(m_arrowDir.x,-m_arrowDir.y); //remember Y dir is flipped
double oblique = 1.0;
if ( !DrawUtil::fpCompare((m_arrowDir.x + m_arrowDir.y), 1.0) ) {
oblique = 1.25;
}
double offsetLength = (m_extLen * oblique) + Rez::guiX(QGIArrow::getPrefArrowSize());
QPointF offsetVec = offsetLength * offsetDir;
posArrow1 = m_start + offsetVec;
posArrow2 = m_end + offsetVec;
m_arrow1->setStyle(0);
m_arrow1->setSize(QGIArrow::getPrefArrowSize());
m_arrow1->setPos(posArrow1);
m_arrow1->draw();
m_arrow1->setRotation(arrowRotation); //rotation = 0 ==> -> horizontal, pointing right
m_arrow2->setStyle(0);
m_arrow2->setSize(QGIArrow::getPrefArrowSize());
m_arrow2->setPos(posArrow2);
m_arrow2->draw();
m_arrow2->setRotation(arrowRotation);
}
void QGISectionLine::makeSymbols()
{
int format = getPrefSectionStandard();
if (format == ANSISTANDARD) {
makeSymbolsTrad();
} else {
makeSymbolsISO();
}
}
void QGISectionLine::makeSymbolsTrad()
{
prepareGeometryChange();
m_symFont.setPixelSize(QGIView::calculateFontPixelSize(m_symSize));
m_symbol1->setFont(m_symFont);
m_symbol1->setPlainText(QString::fromUtf8(m_symbol));
m_symbol2->setFont(m_symFont);
m_symbol2->setPlainText(QString::fromUtf8(m_symbol));
QRectF symRect = m_symbol1->boundingRect();
double symWidth = symRect.width();
double symHeight = symRect.height();
double symbolFudge = 0.75;
double angle = atan2f(m_arrowDir.y,m_arrowDir.x);
if (angle < 0.0) {
angle = 2 * M_PI + angle;
}
Base::Vector3d adjustVector(cos(angle) * symWidth, sin(angle) * symHeight, 0.0);
adjustVector = DrawUtil::invertY(adjustVector) * symbolFudge;
QPointF qAdjust(adjustVector.x, adjustVector.y);
QPointF posSymbol1 = m_arrow1->pos() + qAdjust;
m_symbol1->centerAt(posSymbol1);
QPointF posSymbol2 = m_arrow2->pos() + qAdjust;
m_symbol2->centerAt(posSymbol2);
}
void QGISectionLine::makeSymbolsISO()
{
prepareGeometryChange();
m_symFont.setPixelSize(QGIView::calculateFontPixelSize(m_symSize));
m_symbol1->setFont(m_symFont);
m_symbol1->setPlainText(QString::fromUtf8(m_symbol));
m_symbol2->setFont(m_symFont);
m_symbol2->setPlainText(QString::fromUtf8(m_symbol));
QPointF symPosStart, symPosEnd;
//no normalize() for QPointF
QPointF dist = (m_start - m_end);
double lenDist = sqrt(dist.x()*dist.x() + dist.y()*dist.y());
QPointF offsetDir = dist / lenDist;
QRectF symRect = m_symbol1->boundingRect();
double symWidth = symRect.width();
double symHeight = symRect.height();
double symbolFudge = 0.75;
double angle = atan2f(offsetDir.y(), offsetDir.x());
if (angle < 0.0) {
angle = 2.0 * M_PI + angle;
}
Base::Vector3d adjustVector(cos(angle) * symWidth, sin(angle) * symHeight, 0.0);
adjustVector = adjustVector * symbolFudge;
QPointF qAdjust(adjustVector.x, adjustVector.y);
symPosStart = m_start + qAdjust;
symPosEnd = m_end - qAdjust;
m_symbol1->centerAt(symPosStart);
m_symbol2->centerAt(symPosEnd);
}
void QGISectionLine::extensionEndsTrad()
{
QPointF offsetDir(m_arrowDir.x,-m_arrowDir.y);
//extensions for oblique section line needs to be a bit longer
double oblique = 1.0;
if ( !DrawUtil::fpCompare((m_arrowDir.x + m_arrowDir.y), 1.0) ) {
oblique = 1.25;
}
//draw from section line endpoint
QPointF offsetEnd = oblique * m_extLen * offsetDir;
m_beginExt1 = m_start;
m_endExt1 = m_start + offsetEnd;
m_beginExt2 = m_end;
m_endExt2 = m_end + offsetEnd;
}
void QGISectionLine::extensionEndsISO()
{
//lines are offset to other side of section line!
QPointF offsetDir(m_arrowDir.x,-m_arrowDir.y);
offsetDir = offsetDir * -1.0;
//extensions for oblique section line needs to be a bit longer?
//this is just esthetics
double oblique = 1.0;
if ( !DrawUtil::fpCompare((m_arrowDir.x + m_arrowDir.y), 1.0) ) {
oblique = 1.10;
}
//draw from section line endpoint less arrow length
QPointF offsetStart = offsetDir * Rez::guiX(QGIArrow::getPrefArrowSize());
QPointF offsetEnd = oblique * m_extLen * offsetDir;
m_beginExt1 = m_start + offsetStart;
m_endExt1 = m_start + offsetStart + offsetEnd;
m_beginExt2 = m_end + offsetStart;
m_endExt2 = m_end + offsetStart + offsetEnd;
}
void QGISectionLine::setEnds(Base::Vector3d l1, Base::Vector3d l2)
{
m_l1 = l1;
m_start = QPointF(l1.x, l1.y);
m_l2 = l2;
m_end = QPointF(l2.x, l2.y);
}
void QGISectionLine::setBounds(double x1,double y1,double x2,double y2)
{
m_start = QPointF(x1,y1);
m_end = QPointF(x2,y2);
}
void QGISectionLine::setSymbol(char* sym)
{
m_symbol = sym;
}
void QGISectionLine::setDirection(double xDir,double yDir)
{
Base::Vector3d newDir(xDir,yDir,0.0);
setDirection(newDir);
}
void QGISectionLine::setDirection(Base::Vector3d dir)
{
m_arrowDir = dir;
m_arrowDir.Normalize();
}
void QGISectionLine::setFont(QFont f, double fsize)
{
m_symFont = f;
m_symSize = fsize;
}
void QGISectionLine::setSectionColor(QColor c)
{
setColor(c);
}
QColor QGISectionLine::getSectionColor()
{
return PreferencesGui::sectionLineQColor();
}
//SectionLineStyle
void QGISectionLine::setSectionStyle(int style)
{
Qt::PenStyle sectStyle = static_cast<Qt::PenStyle> (style);
setStyle(sectStyle);
}
Qt::PenStyle QGISectionLine::getSectionStyle()
{
return PreferencesGui::sectionLineStyle();
}
//ASME("traditional") vs ISO("reference arrow method") arrows
int QGISectionLine::getPrefSectionStandard()
{
Base::Reference<ParameterGrp> hGrp = App::GetApplication().GetUserParameter().
GetGroup("BaseApp")->GetGroup("Preferences")->GetGroup("Mod/TechDraw/Standards");
int format = hGrp->GetInt("SectionLineStandard", ISOSTANDARD);
return format;
}
void QGISectionLine::paint ( QPainter * painter, const QStyleOptionGraphicsItem * option, QWidget * widget) {
QStyleOptionGraphicsItem myOption(*option);
myOption.state &= ~QStyle::State_Selected;
setTools();
QGIDecoration::paint (painter, &myOption, widget);
}
void QGISectionLine::setTools()
{
// Use our own style
if (m_styleCurrent == Qt::DashDotLine) {
QVector<qreal> dashes;
// the stroke width is double the one of center lines, but we like to
// have the same spacing. thus these values must be half as large
qreal space = 2; // in unit r_width
qreal dash = 8;
// dot must be really small when using CapStyle RoundCap but > 0
// for CapStyle FlatCap you would need to set it to 1
qreal dot = 0.000001;
dashes << dot << space << dash << space;
// TODO for fanciness: calculate the offset so both arrows start with a
// dash!
m_pen.setDashPattern(dashes);
m_pen.setDashOffset(2);
}
else {
m_pen.setStyle(m_styleCurrent);
}
m_pen.setWidthF(m_width);
m_pen.setColor(m_colCurrent);
m_pen.setCapStyle(Qt::RoundCap);
m_brush.setStyle(m_brushCurrent);
m_brush.setColor(m_colCurrent);
m_line->setPen(m_pen);
// m_arrow1->setPen(m_pen);
// m_arrow2->setPen(m_pen);
// m_arrow1->setBrush(m_brush);
// m_arrow2->setBrush(m_brush);
m_arrow1->setNormalColor(m_colCurrent);
m_arrow1->setFillColor(m_colCurrent);
m_arrow1->setPrettyNormal();
m_arrow2->setNormalColor(m_colCurrent);
m_arrow2->setFillColor(m_colCurrent);
m_arrow2->setPrettyNormal();
m_symbol1->setDefaultTextColor(m_colCurrent);
m_symbol2->setDefaultTextColor(m_colCurrent);
}
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