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/*
**************************************************************************
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 "pmlatheedit.h"
#include "pmlathe.h"
#include "pmvectoredit.h"
#include "pmvectorlistedit.h"
#include "pmpart.h"
#include <qlayout.h>
#include <qlabel.h>
#include <qtooltip.h>
#include <qcombobox.h>
#include <qcheckbox.h>
#include <qpushbutton.h>
#include <klocale.h>
#include <kdialog.h>
#include <kiconloader.h>
#include <kmessagebox.h>
PMLatheEdit::PMLatheEdit( QWidget* parent, const char* name )
: Base( parent, name )
{
m_pDisplayedObject = 0;
}
void PMLatheEdit::createTopWidgets( )
{
Base::createTopWidgets( );
QHBoxLayout* hl = new QHBoxLayout( topLayout( ) );
hl->addWidget( new QLabel( i18n( "Spline type:" ), this ) );
m_pSplineType = new QComboBox( false, this );
m_pSplineType->insertItem( i18n( "Linear Spline" ) );
m_pSplineType->insertItem( i18n( "Quadratic Spline" ) );
m_pSplineType->insertItem( i18n( "Cubic Spline" ) );
m_pSplineType->insertItem( i18n( "Bezier Spline" ) );
hl->addWidget( m_pSplineType );
hl->addStretch( 1 );
connect( m_pSplineType, SIGNAL( activated( int ) ),
SLOT( slotTypeChanged( int ) ) );
}
void PMLatheEdit::createBottomWidgets( )
{
topLayout( )->addWidget( new QLabel( i18n( "Spline points:" ), this ) );
m_pPoints = new PMVectorListEdit( "u", "v", this );
connect( m_pPoints, SIGNAL( dataChanged( ) ), SIGNAL( dataChanged( ) ) );
connect( m_pPoints, SIGNAL( selectionChanged( ) ),
SLOT( slotSelectionChanged( ) ) );
QHBoxLayout* hl = new QHBoxLayout( topLayout( ) );
hl->addWidget( m_pPoints, 2 );
m_pAddAbove = new QPushButton( this );
m_pAddAbove->setPixmap( SmallIcon( "pmaddpointabove" ) );
m_pAddBelow = new QPushButton( this );
m_pAddBelow->setPixmap( SmallIcon( "pmaddpoint" ) );
m_pRemove = new QPushButton( this );
m_pRemove->setPixmap( SmallIcon( "pmremovepoint" ) );
connect( m_pAddAbove, SIGNAL( clicked( ) ), SLOT( slotAddPointAbove( ) ) );
connect( m_pAddBelow, SIGNAL( clicked( ) ), SLOT( slotAddPointBelow( ) ) );
connect( m_pRemove, SIGNAL( clicked( ) ), SLOT( slotRemovePoint( ) ) );
QVBoxLayout* bl = new QVBoxLayout( hl );
bl->addWidget( m_pAddAbove );
bl->addWidget( m_pAddBelow );
bl->addWidget( m_pRemove );
bl->addStretch( 1 );
m_pSturm = new QCheckBox( i18n( "Sturm" ), this );
topLayout( )->addWidget( m_pSturm );
connect( m_pSturm, SIGNAL( clicked( ) ), SIGNAL( dataChanged( ) ) );
Base::createBottomWidgets( );
}
void PMLatheEdit::displayObject( PMObject* o )
{
if( o->isA( "Lathe" ) )
{
bool readOnly = o->isReadOnly( );
m_pDisplayedObject = ( PMLathe* ) o;
switch( m_pDisplayedObject->splineType( ) )
{
case PMLathe::LinearSpline:
m_pSplineType->setCurrentItem( 0 );
break;
case PMLathe::QuadraticSpline:
m_pSplineType->setCurrentItem( 1 );
break;
case PMLathe::CubicSpline:
m_pSplineType->setCurrentItem( 2 );
break;
case PMLathe::BezierSpline:
m_pSplineType->setCurrentItem( 3 );
break;
}
m_pSplineType->setEnabled( !readOnly );
m_pSturm->setChecked( m_pDisplayedObject->sturm( ) );
m_pSturm->setEnabled( !readOnly );
m_pPoints->setReadOnly( readOnly );
m_pPoints->setVectors( m_pDisplayedObject->points( ), true );
updateControlPointSelection( );
updatePointButtons( );
Base::displayObject( o );
}
else
kdError( PMArea ) << "PMLatheEdit: Can't display object\n";
}
void PMLatheEdit::updateControlPointSelection( )
{
PMControlPointList cp = part( )->activeControlPoints( );
PMControlPointListIterator it( cp );
int i;
int np = cp.count( ) / 2;
if( np == m_pPoints->size( ) )
{
m_pPoints->blockSelectionUpdates( true );
bool sb = m_pPoints->signalsBlocked( );
m_pPoints->blockSignals( true );
m_pPoints->clearSelection( );
for( i = 0; i < np; i++, ++it )
if( ( *it )->selected( ) )
m_pPoints->select( i );
for( i = 0; i < np; i++, ++it )
if( ( *it )->selected( ) )
m_pPoints->select( i );
m_pPoints->blockSignals( sb );
m_pPoints->blockSelectionUpdates( false );
}
}
void PMLatheEdit::saveContents( )
{
if( m_pDisplayedObject )
{
m_pDisplayedObject->setPoints( m_pPoints->vectors( ) );
switch( m_pSplineType->currentItem( ) )
{
case 0:
m_pDisplayedObject->setSplineType( PMLathe::LinearSpline );
break;
case 1:
m_pDisplayedObject->setSplineType( PMLathe::QuadraticSpline );
break;
case 2:
m_pDisplayedObject->setSplineType( PMLathe::CubicSpline );
break;
case 3:
m_pDisplayedObject->setSplineType( PMLathe::BezierSpline );
break;
}
m_pDisplayedObject->setSturm( m_pSturm->isChecked( ) );
Base::saveContents( );
}
}
bool PMLatheEdit::isDataValid( )
{
if( !m_pPoints->isDataValid( ) )
return false;
int np = m_pPoints->size( );
switch( m_pSplineType->currentItem( ) )
{
case 0:
if( np < 2 )
{
KMessageBox::error( this, i18n( "Linear splines need at least 2 points." ),
i18n( "Error" ) );
return false;
}
break;
case 1:
if( np < 3 )
{
KMessageBox::error( this, i18n( "Quadratic splines need at least 3 points." ),
i18n( "Error" ) );
return false;
}
break;
case 2:
if( np < 4 )
{
KMessageBox::error( this, i18n( "Cubic splines need at least 4 points." ),
i18n( "Error" ) );
return false;
}
break;
case 3:
if( ( np < 4 ) || ( ( np % 4 ) != 0 ) )
{
KMessageBox::error( this, i18n( "Bezier splines need 4 points for each segment." ),
i18n( "Error" ) );
return false;
}
break;
}
return Base::isDataValid( );
}
void PMLatheEdit::slotTypeChanged( int )
{
emit dataChanged( );
}
void PMLatheEdit::slotAddPointAbove( )
{
int index = m_pPoints->currentRow( );
if( index >= 0 )
{
QValueList<PMVector> points = m_pPoints->vectors( );
QValueListIterator<PMVector> it = points.at( index );
if( it != points.end( ) )
{
QValueListIterator<PMVector> it2 = it;
it2--;
PMVector v;
if( it2 == points.end( ) )
v = *it;
else
v = ( *it + *it2 ) / 2;
points.insert( it, v );
m_pPoints->setVectors( points, true );
updatePointButtons( );
emit dataChanged( );
emit sizeChanged( );
}
}
}
void PMLatheEdit::slotAddPointBelow( )
{
int index = m_pPoints->currentRow( );
if( index >= 0 )
{
QValueList<PMVector> points = m_pPoints->vectors( );
QValueListIterator<PMVector> it = points.at( index );
if( it != points.end( ) )
{
QValueListIterator<PMVector> it2 = it;
it2++;
PMVector v;
if( it2 == points.end( ) )
v = *it;
else
v = ( *it + *it2 ) / 2;
points.insert( it2, v );
m_pPoints->setVectors( points, true );
m_pPoints->setCurrentCell( index + 1, m_pPoints->currentColumn( ) );
updatePointButtons( );
emit dataChanged( );
emit sizeChanged( );
}
}
}
void PMLatheEdit::slotRemovePoint( )
{
int row = m_pPoints->currentRow( );
if( row >= 0 )
{
QValueList<PMVector> points = m_pPoints->vectors( );
QValueListIterator<PMVector> it = points.at( row );
if( it != points.end( ) && points.size( ) > 1 )
{
points.remove( it );
m_pPoints->setVectors( points, true );
updatePointButtons( );
emit dataChanged( );
emit sizeChanged( );
}
}
}
void PMLatheEdit::slotSelectionChanged( )
{
PMControlPointList cp = part( )->activeControlPoints( );
PMControlPointListIterator it( cp );
int np = cp.count( ) / 2;
int i;
if( np == m_pPoints->size( ) )
{
for( i = 0; i < np; i++, ++it )
( *it )->setSelected( m_pPoints->isSelected( i ) );
for( i = 0; i < np; i++, ++it )
( *it )->setSelected( m_pPoints->isSelected( i ) );
emit controlPointSelectionChanged( );
}
updatePointButtons( );
}
void PMLatheEdit::updatePointButtons( )
{
int row = m_pPoints->currentRow( );
m_pAddAbove->setEnabled( row >= 0 );
m_pAddBelow->setEnabled( row >= 0 );
m_pRemove->setEnabled( row >= 0 && m_pPoints->size( ) > 2 );
}
#include "pmlatheedit.moc"
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