smesh/src/SMESHGUI/SMESHGUI_PatternWidget.cxx

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// SMESH SMESHGUI : GUI for SMESH component
//
// Copyright (C) 2003 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License.
//
// 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// See http://www.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
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//
//
//
// File : SMESHGUI_PatternWidget.cxx
// Author : Michael ZORIN
// Module : SMESH
// $Header:
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#include "SMESHGUI_PatternWidget.h"
//Qt includes
#include <qpainter.h>
#include <qpoint.h>
//=================================================================================
// class : SMESHGUI_PatternWidget()
// purpose :
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//=================================================================================
SMESHGUI_PatternWidget::SMESHGUI_PatternWidget (QWidget* parent, const char* name, WFlags fl)
: QFrame(parent, name, WStyle_Customize)
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{
myMinU = myMinV = myMaxU = myMaxV = 0;
setMinimumHeight(150);
repaint();
}
//=================================================================================
// function : ~SMESHGUI_PatternWidget()
// purpose :
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//=================================================================================
SMESHGUI_PatternWidget::~SMESHGUI_PatternWidget()
{
}
//=================================================================================
// function : SetPoints()
// purpose :
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//=================================================================================
void SMESHGUI_PatternWidget::SetPoints (PointVector thePoints,
QValueVector<int> theKeys,
ConnectivityVector theConnections)
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{
myPoints = thePoints;
myKeys = theKeys;
myConnections = theConnections;
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if (!thePoints.size())
return;
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myMinU = myMaxU = (thePoints[0]).x;
myMinV = myMaxV = (thePoints[0]).y;
double x, y;
for (int i = 1; i < thePoints.size(); i++) {
x = (thePoints[i]).x;
y = (thePoints[i]).y;
if (myMinU > x)
myMinU = x;
if (myMaxU < x)
myMaxU = x;
if (myMinV > y)
myMinV = y;
if (myMaxV < y)
myMaxV = y;
}
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repaint();
}
static const int Shift = 4; // shift of the point number from point
static const int Border = 20;
//=================================================================================
// function : paintEvent()
// purpose :
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//=================================================================================
void SMESHGUI_PatternWidget::paintEvent (QPaintEvent*)
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{
QPainter paint (this);
paint.setBrush(Qt::SolidPattern);
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//Draw points
const int aRadius = 3; // radius of a point
for (int i = 0; i < myKeys.size() && i < myPoints.size(); i++) {
SMESH::PointStruct aPoint = myPoints[ myKeys[i] ];
QPoint aQPnt = MapCoords(aPoint.x, aPoint.y);
paint.drawPie(aQPnt.x() - aRadius, aQPnt.y() - aRadius, aRadius*2, aRadius*2, 5760, 5760);
paint.drawText(aQPnt.x() + Shift, aQPnt.y() - Shift, QString::number(i+1));
}
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//Draw lines
for (int i = 0; i < myConnections.size(); i++) {
QValueVector<int> aCVector = myConnections[i];
if (aCVector.size() == 0)
continue;
SMESH::PointStruct aPoint = myPoints[ aCVector[0] ];
const QPoint aBeginPnt = MapCoords(aPoint.x, aPoint.y);
QPoint aFirstPnt = aBeginPnt, aSecondPnt;
for (int j = 1; j < aCVector.size(); j++) {
aPoint = myPoints[ aCVector[j] ];
aSecondPnt = MapCoords(aPoint.x, aPoint.y);
paint.drawLine(aFirstPnt, aSecondPnt);
aFirstPnt = aSecondPnt;
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}
paint.drawLine(aBeginPnt, aSecondPnt);
}
}
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//=================================================================================
// function : MapCoords()
// purpose :
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//=================================================================================
QPoint SMESHGUI_PatternWidget::MapCoords (const double u, const double v)
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{
int aWidth = width() - 2*Border;
int aHeight = height() - 2*Border;
double aUBound = myMaxU - myMinU;
double aVBound = myMaxV - myMinV;
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double aUScale = aWidth/aUBound;
double aVScale = aHeight/aVBound;
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double aScale;
aUScale <= aVScale ? aScale = aUScale : aScale = aVScale;
double aUMiddle = (myMaxU + myMinU)/2;
double aVMiddle = (myMaxV + myMinV)/2;
int x = int(aWidth/2 + (u - aUMiddle)*aScale + Border - Shift);
int y = int(aHeight/2 + (aVMiddle - v)*aScale + Border + Shift);
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QPoint aPoint = QPoint(x, y);
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return aPoint;
}