Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 255 insertions, 0 deletions

diff --git a/kpovmodeler/pmpolynomedit.cpp b/kpovmodeler/pmpolynomedit.cpp
new file mode 100644
index 00000000..b236a8c6
--- /dev/null
+++ b/kpovmodeler/pmpolynomedit.cpp
@@ -0,0 +1,255 @@
+/*
+**************************************************************************
+                                 description
+                             --------------------
+    copyright            : (C) 2002 by Andreas Zehender
+    email                : zehender@kde.org
+**************************************************************************
+
+**************************************************************************
+*                                                                        *
+*  This program 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 2 of the License, or     *
+*  (at your option) any later version.                                   *
+*                                                                        *
+**************************************************************************/
+
+
+#include "pmpolynomedit.h"
+#include "pmpolynom.h"
+#include "pmpolynomexponents.h"
+#include "pmlineedits.h"
+#include "pmformulalabel.h"
+
+#include <qlayout.h>
+#include <qcheckbox.h>
+#include <qspinbox.h>
+#include <qlabel.h>
+#include <klocale.h>
+#include <kdialog.h>
+
+PMPolynomEdit::PMPolynomEdit( QWidget* parent, const char* name )
+      : Base( parent, name )
+{
+   m_pDisplayedObject = 0;
+   m_currentOrder = 0;
+   m_readOnly = false;
+}
+
+void PMPolynomEdit::createTopWidgets( )
+{
+   Base::createTopWidgets( );
+
+   QHBoxLayout* hl = new QHBoxLayout( topLayout( ) );
+   hl->addWidget( new QLabel( i18n( "Order" ), this ) );
+   m_pOrder = new QSpinBox( 2, 7, 1, this );
+   hl->addWidget( m_pOrder );
+   hl->addStretch( 1 );
+   connect( m_pOrder, SIGNAL( valueChanged( int ) ), SLOT( slotOrderChanged( int ) ) );
+   
+   topLayout( )->addWidget( new QLabel( i18n( "Formula:" ), this ) );
+   m_pPolyWidget = new QWidget( this );
+   topLayout( )->addWidget( m_pPolyWidget );
+   m_pSturm = new QCheckBox( i18n( "Sturm" ), this );
+   topLayout( )->addWidget( m_pSturm );
+   connect( m_pSturm, SIGNAL( clicked( ) ), SIGNAL( dataChanged( ) ) );
+}
+
+void PMPolynomEdit::displayObject( PMObject* o )
+{
+   if( o->isA( "Polynom" ) )
+   {
+      bool readOnly = o->isReadOnly( );
+      m_readOnly = readOnly;
+      m_pDisplayedObject = ( PMPolynom* ) o;
+
+      displayCoefficients( m_pDisplayedObject->coefficients( ),
+                           m_pDisplayedObject->polynomOrder( ),
+                           m_pDisplayedObject->polynomOrder( ) );
+      
+      m_pSturm->setChecked( m_pDisplayedObject->sturm( ) );
+      m_pSturm->setEnabled( !readOnly );
+      if( m_pDisplayedObject->polynomOrder( ) == 2 )
+         m_pSturm->hide( );
+      else
+         m_pSturm->show( );
+
+      bool sb = m_pOrder->signalsBlocked( );
+      m_pOrder->blockSignals( true );
+      m_pOrder->setValue( m_pDisplayedObject->polynomOrder( ) );
+      m_pOrder->blockSignals( sb );
+      
+      Base::displayObject( o );
+   }
+   else
+      kdError( PMArea ) << "PMPolynomEdit: Can't display object\n";
+}
+
+void PMPolynomEdit::displayCoefficients( const PMVector& co, int cOrder,
+                                         int dOrder )
+{
+   QValueList<PMPolynomExponents>& polynom
+      = PMPolynomExponents::polynom( dOrder );
+      
+   if( dOrder != m_currentOrder )
+   {
+      if( m_currentOrder > 0 )
+      {
+         if( m_pPolyWidget->layout( ) )
+            delete m_pPolyWidget->layout( );
+         
+         m_labels.setAutoDelete( true );
+         m_labels.clear( );
+         m_labels.setAutoDelete( false );
+         m_edits.setAutoDelete( true );
+         m_edits.clear( );
+         m_edits.setAutoDelete( false );
+      }
+
+      int nedit = polynom.count( );
+      int nr = ( nedit + 2 ) / 3;
+      int i;
+      
+      QGridLayout* gl = new QGridLayout( m_pPolyWidget, nr * 2 - 1, 9, 0 );
+      QLabel* l = 0;
+      PMFloatEdit* edit;
+      PMFormulaLabel* fl;
+      
+      QValueList<PMPolynomExponents>::ConstIterator it = polynom.begin( );
+      QString text;
+      int row, col;
+      QString plus( "+" );
+      
+      for( i = 0; it != polynom.end( ); i++, ++it )
+      {
+         row = ( i / 3 ) * 2;
+         col = ( i % 3 ) * 3;
+
+         if( i != 0 )
+         {
+            l = new QLabel( plus, m_pPolyWidget );
+            m_labels.append( l );
+            gl->addWidget( l, row, col );
+            l->show( );
+         }
+         
+         edit = new PMFloatEdit( m_pPolyWidget );
+         connect( edit, SIGNAL( dataChanged( ) ), SIGNAL( dataChanged( ) ) );
+         m_edits.append( edit );
+         gl->addWidget( edit, row, col + 1 );
+         edit->show( );
+         edit->setReadOnly( m_readOnly );
+
+         fl = new PMFormulaLabel( *it, m_pPolyWidget );
+         
+         m_labels.append( fl );
+         gl->addWidget( fl, row, col + 2 );
+         fl->show( );
+      }
+      for( i = 0; i < ( nr - 1 ); i++ )
+         gl->addRowSpacing( i * 2 + 1, KDialog::spacingHint( ) );
+      
+      emit sizeChanged( );
+   }
+   m_currentOrder = dOrder;
+
+   
+   if( dOrder == cOrder )
+   {
+      QPtrListIterator<PMFloatEdit> eit( m_edits );
+      int i;
+      for( i = 0; *eit; ++eit, ++i )
+         ( *eit )->setValue( co[i] );
+   }
+   else if( dOrder > cOrder )
+   {
+      QValueList<PMPolynomExponents>::ConstIterator dit = polynom.begin( );
+      QValueList<PMPolynomExponents>& cpoly
+         = PMPolynomExponents::polynom( cOrder );
+      QValueList<PMPolynomExponents>::ConstIterator cit = cpoly.begin( );
+      QPtrListIterator<PMFloatEdit> eit( m_edits );
+      int i = 0;
+      
+      for( ; ( dit != polynom.end( ) ) && ( cit != cpoly.end( ) ); ++dit, ++eit )
+      {
+         if( *dit == *cit )
+         {
+            ( *eit )->setValue( co[i] );
+            i++;
+            cit++;
+         }
+         else
+            ( *eit )->setValue( 0.0 );
+      }
+      if( ( dit != polynom.end( ) ) || ( cit != cpoly.end( ) ) )
+         kdError( PMArea ) << "displayExponents is buggy!\n";
+   } 
+   else // dOrder < cOrder
+   {
+      QValueList<PMPolynomExponents>::ConstIterator dit = polynom.begin( );
+      QValueList<PMPolynomExponents>& cpoly
+         = PMPolynomExponents::polynom( cOrder );
+      QValueList<PMPolynomExponents>::ConstIterator cit = cpoly.begin( );
+      QPtrListIterator<PMFloatEdit> eit( m_edits );
+      int i = 0;
+      
+      for( ; ( dit != polynom.end( ) ) && ( cit != cpoly.end( ) ); ++cit, ++i )
+      {
+         if( *dit == *cit )
+         {
+            ( *eit )->setValue( co[i] );
+            ++eit;
+            ++dit;
+         }
+      }
+      if( ( dit != polynom.end( ) ) || ( cit != cpoly.end( ) ) )
+         kdError( PMArea ) << "displayExponents is buggy!\n";
+   }
+}
+
+PMVector PMPolynomEdit::coefficients( ) const
+{
+   QPtrListIterator<PMFloatEdit> eit( m_edits );
+   int num = m_edits.count( );
+   PMVector v( num );
+   int i;
+   
+   for( i = 0 ; *eit; ++eit, ++i )
+      v[i] = ( *eit )->value( );
+   return v;
+}
+
+void PMPolynomEdit::saveContents( )
+{
+   if( m_pDisplayedObject )
+   {
+      m_pDisplayedObject->setPolynomOrder( m_pOrder->value( ) );
+      m_pDisplayedObject->setCoefficients( coefficients( ) );
+      
+      Base::saveContents( );
+
+      m_pDisplayedObject->setSturm( m_pSturm->isChecked( ) );
+   }
+}
+
+bool PMPolynomEdit::isDataValid( )
+{
+   QPtrListIterator<PMFloatEdit> eit( m_edits );
+   for( ; *eit; ++eit )
+      if( !( *eit )->isDataValid( ) )
+         return false;
+   return Base::isDataValid( );
+}
+
+void PMPolynomEdit::slotOrderChanged( int order )
+{
+   if( order == 2 )
+      m_pSturm->hide( );
+   else
+      m_pSturm->show( );
+   
+   displayCoefficients( coefficients( ), m_currentOrder, order );
+}
+
+#include "pmpolynomedit.moc"