kmplot/kmplot/FktDlg.cpp

   1 /*
   2 * KmPlot - a math. function plotter for the KDE-Desktop
   3 *
   4 * Copyright (C) 1998, 1999  Klaus-Dieter M�ler
   5 *               2000, 2002 kd.moeller@t-online.de
   6 *
   7 * This file is part of the KDE Project.
   8 * KmPlot is part of the KDE-EDU Project.
   9 *
  10 * This program is free software; you can redistribute it and/or modify
  11 * it under the terms of the GNU General Public License as published by
  12 * the Free Software Foundation; either version 2 of the License, or
  13 * (at your option) any later version.
  14 *
  15 * This program is distributed in the hope that it will be useful,
  16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 * GNU General Public License for more details.
  19 *
  20 * You should have received a copy of the GNU General Public License
  21 * along with this program; if not, write to the Free Software
  22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  23 *
  24 */
  25
  26 // Qt includes
  27 // #include <qpushbutton.h>
  28 // #include <qpopupmenu.h>
  29
  30 // KDE includes
  31 #include <kapplication.h>
  32 #include <klistview.h>
  33 #include <klocale.h>
  34 #include <kmessagebox.h>
  35 #include <kpushbutton.h>
  36 #include <qcstring.h>
  37 #include <qcursor.h>
  38 #include <qheader.h>
  39
  40 // locale includes
  41 #include "FktDlg.h"
  42 #include "FktDlg.moc"
  43 #include "editfunction.h"
  44 #include "keditparametric.h"
  45 #include "keditpolar.h"
  46 #include "MainDlg.h"
  47 #include "parseriface.h"
  48 #include "xparser.h"
  49
  50 #include <kdebug.h>
  51
  52 FktDlg::FktDlg( QWidget* parent, View *view ) : FktDlgData( parent, "editPlots" ), m_view(view)
  53 {
  54         connect( cmdCopyFunction, SIGNAL( clicked() ), this, SLOT( slotCopyFunction()) );
  55         connect( cmdMoveFunction, SIGNAL( clicked() ), this, SLOT( slotMoveFunction()) );
  56         connect( lb_fktliste, SIGNAL( doubleClicked(QListViewItem *, const QPoint &, int)), this, SLOT(lb_fktliste_doubleClicked(QListViewItem *, const QPoint &, int)) );
  57         connect( lb_fktliste, SIGNAL( clicked(QListViewItem *)), this, SLOT(lb_fktliste_clicked(QListViewItem *)));
  58         connect( lb_fktliste, SIGNAL( spacePressed(QListViewItem *)), this, SLOT(lb_fktliste_spacePressed(QListViewItem *)));
  59
  60         lb_fktliste->addColumn( "" );
  61         lb_fktliste->header()->hide();
  62         lb_fktliste->setResizeMode( QListView::LastColumn );
  63 }
  64
  65 FktDlg::~FktDlg()
  66 {
  67 }
  68
  69 void FktDlg::slotDelete()
  70 {
  71         if ( lb_fktliste->currentItem() == 0)
  72                 return;
  73         QCheckListItem *currentItem = dynamic_cast<QCheckListItem *>(lb_fktliste->currentItem());
  74         if( currentItem->text()[0] == 'x' )
  75         {
  76     // Delete pair of parametric function
  77                 int const id = getParamId( currentItem->text());
  78                 if ( id == -1)
  79                         return;
  80                 if ( !m_view->parser()->delfkt(id))
  81                         return;
  82         }
  83         else
  84         {
  85     // only one function to be deleted
  86                 if (!m_view->parser()->delfkt( getId( currentItem->text()) ) )
  87                         return;
  88         }
  89         lb_fktliste->takeItem( currentItem );
  90         changed = true;
  91         updateView();
  92         if ( lb_fktliste->childCount()==0 )
  93                 PushButtonDel->setEnabled(false);
  94 }
  95
  96 void FktDlg::lb_fktliste_doubleClicked( QListViewItem *, const QPoint &, int )
  97 {
  98         if ( mapFromGlobal(QCursor::pos()).x() <= 40 )
  99                 return;
 100         slotEdit();
 101 }
 102
 103 void FktDlg::lb_fktliste_spacePressed( QListViewItem *item)
 104 {
 105         if ( !item )
 106                 return;
 107         QCheckListItem *currentItem = dynamic_cast<QCheckListItem *>(item);
 108         int id;
 109         if ( currentItem->text()[0] == 'x' )
 110                 id = getParamId(currentItem->text());
 111         else
 112                 id = getId(currentItem->text());
 113         Ufkt *function = &m_view->parser()->ufkt[ m_view->parser()->ixValue(id) ];
 114         if ( id==-1 )
 115                 return;
 116
 117         function->f_mode=currentItem->isOn();
 118         updateView();
 119 }
 120
 121 void FktDlg::lb_fktliste_clicked( QListViewItem * item )
 122 {
 123         if ( mapFromGlobal(QCursor::pos()).x() > 40 )
 124                 return;
 125         lb_fktliste_spacePressed(item);
 126 }
 127
 128
 129 void FktDlg::slotEdit()
 130 {
 131         QCheckListItem *currentItem = dynamic_cast<QCheckListItem *>(lb_fktliste->currentItem());
 132         if ( currentItem == 0 )
 133         {
 134                 PushButtonEdit->setEnabled(false);
 135                 return;
 136         }
 137         int const id = getId( currentItem->text().section( ";", 0, 0) ) ;
 138
 139         // find out the function type
 140         char const prefix = m_view->parser()->ufkt[ m_view->parser()->ixValue(id) ].fstr.at(0).latin1();
 141
 142         if ( prefix == 'r')
 143                 slotEditPolar( id );
 144         else if ( prefix == 'x')
 145                 slotEditParametric( id, m_view->parser()->ixValue(getId( currentItem->text().section( ";", 1, 1) )));
 146         else
 147                 slotEditFunction( id );
 148 }
 149
 150 int FktDlg::getId( const QString &f_str )
 151 {
 152         for( QValueVector<Ufkt>::iterator it =  m_view->parser()->ufkt.begin(); it !=  m_view->parser()->ufkt.end(); ++it)
 153         {
 154                 if ( it->fstr == f_str )
 155                         return it->id;
 156         }
 157         return -1;
 158 }
 159
 160 int FktDlg::getParamId( const QString &f_str)
 161 {
 162         QString const fname = f_str.section( "(", 0, 0 );
 163         for( QValueVector<Ufkt>::iterator it =  m_view->parser()->ufkt.begin(); it !=  m_view->parser()->ufkt.end(); ++it)
 164         {
 165                 if ( it->fname == fname )
 166                         return it->id;
 167         }
 168         return -1;
 169 }
 170
 171 void FktDlg::updateView()
 172 {
 173         m_view->drawPlot();
 174 }
 175
 176 void FktDlg::slotHasSelection()
 177 {
 178         bool const has_selection = !( lb_fktliste->currentItem() == 0 );
 179         PushButtonEdit->setEnabled( has_selection );
 180         PushButtonDel->setEnabled( has_selection );
 181         cmdCopyFunction->setEnabled( has_selection );
 182         cmdMoveFunction->setEnabled( has_selection );
 183 }
 184
 185 void FktDlg::slotEditFunction( int id )
 186 {
 187         EditFunction* editFunction = new EditFunction( m_view->parser(), this );
 188         if ( id==-1 ) editFunction->setCaption(i18n( "New Function Plot" ));
 189         else editFunction->setCaption(i18n( "Edit Function Plot" ));
 190         editFunction->initDialog( id );
 191         if( editFunction->exec() == QDialog::Accepted )
 192         {
 193                 Ufkt *function = editFunction->functionItem();
 194                 QCheckListItem *item;
 195                 if( id == -1 ) //a new function
 196                         item = new QCheckListItem(lb_fktliste, function->fstr, QCheckListItem::CheckBox); //a new function
 197                 else //change a function
 198                 {
 199                         item = dynamic_cast<QCheckListItem *>(lb_fktliste->currentItem());
 200                         item->setText(0, function->fstr );
 201                 }
 202                 item->setOn(function->f_mode);
 203                 lb_fktliste->sort();
 204                 changed = true;
 205                 updateView();
 206         }
 207 }
 208
 209 void FktDlg::slotEditParametric( int x_id, int y_id)
 210 {
 211         KEditParametric* editParametric = new KEditParametric( m_view->parser(), this );
 212         if ( x_id==-1 && y_id==-1)
 213                 editParametric->setCaption(i18n( "New Parametric Plot" ));
 214         editParametric->initDialog( x_id, y_id );
 215         if( editParametric->exec() == QDialog::Accepted )
 216         {
 217                 Ufkt *function_y = editParametric->functionItem();
 218                 Ufkt *function_x = &m_view->parser()->ufkt[m_view->parser()->ixValue(function_y->id - 1)]; //get the x-function
 219                 QCheckListItem *item;
 220                 if( x_id == -1 ) //a new function
 221                 {
 222                         item = new QCheckListItem(lb_fktliste, function_x->fstr+";"+function_y->fstr, QCheckListItem::CheckBox);
 223                 }
 224                 else //change a function
 225                 {
 226                         item = dynamic_cast<QCheckListItem *>(lb_fktliste->currentItem());
 227                         item->setText(0, function_x->fstr+";"+function_y->fstr );
 228                 }
 229                 item->setOn(function_y->f_mode);
 230                 lb_fktliste->sort();
 231                 changed = true;
 232                 updateView();
 233         }
 234 }
 235
 236 void FktDlg::slotEditPolar( int id )
 237 {
 238         KEditPolar* editPolar = new KEditPolar( m_view->parser(), this );
 239         if ( id==-1) editPolar->setCaption(i18n( "New Polar Plot" ));
 240         editPolar->initDialog( id );
 241         if( editPolar->exec() == QDialog::Accepted )
 242         {
 243                 Ufkt *function = editPolar->functionItem();
 244                 QCheckListItem *item;
 245                 if( id == -1 ) // a new function
 246                 {
 247                         item = new QCheckListItem(lb_fktliste, function->fstr, QCheckListItem::CheckBox);
 248                 }
 249                 else //change a function
 250                 {
 251                         item = dynamic_cast<QCheckListItem *>(lb_fktliste->currentItem());
 252                         item->setText(0, function->fstr );
 253                 }
 254                 item->setOn(function->f_mode);
 255                 lb_fktliste->sort();
 256                 changed = true;
 257                 updateView();
 258         }
 259 }
 260
 261 void FktDlg::slotNewFunction()
 262 {
 263         slotEditFunction();
 264 }
 265
 266 void FktDlg::slotNewParametric()
 267 {
 268         slotEditParametric();
 269 }
 270
 271 void FktDlg::slotNewPolar()
 272 {
 273         slotEditPolar();
 274 }
 275
 276 void FktDlg::getPlots()
 277 {
 278         lb_fktliste->clear();
 279
 280   // adding all yet added functions
 281         for( QValueVector<Ufkt>::iterator it = m_view->parser()->ufkt.begin(); it != m_view->parser()->ufkt.end(); ++it)
 282         {
 283                 if( it->fname.isEmpty() || it->fstr[0] == 'y' ) continue;
 284                 QCheckListItem *item;
 285                 if( it->fstr[0] == 'x' )
 286                 {
 287                         QString y = it->fstr;
 288                         ++it;
 289                         item = new QCheckListItem( lb_fktliste,  y + ";" + it->fstr, QCheckListItem::CheckBox );
 290                 }
 291                 else
 292                         item = new QCheckListItem(lb_fktliste, it->fstr, QCheckListItem::CheckBox);
 293                 item->setOn(it->f_mode);
 294         }
 295         lb_fktliste->sort();
 296 }
 297
 298 void  FktDlg::slotHelp()
 299 {
 300         kapp->invokeHelp( "", "kmplot" );
 301 }
 302
 303 bool FktDlg::isChanged()
 304 {
 305         return changed;
 306 }
 307
 308 void FktDlg::showEvent ( QShowEvent * )
 309 {
 310         changed = false;
 311 }
 312
 313 void FktDlg::slotCopyFunction()
 314 {
 315         if ( lb_fktliste->currentItem() == 0)
 316         {
 317                 cmdCopyFunction->setEnabled(false);
 318                 return;
 319         }
 320         QCheckListItem *currentItem = dynamic_cast<QCheckListItem *>(lb_fktliste->currentItem());
 321         QString const fstr = currentItem->text();
 322         m_view->parser()->sendFunction(getId(fstr));
 323 }
 324
 325 void FktDlg::slotMoveFunction()
 326 {
 327         if ( lb_fktliste->currentItem() == 0)
 328         {
 329                 cmdCopyFunction->setEnabled(false);
 330                 return;
 331         }
 332         QCheckListItem *currentItem = dynamic_cast<QCheckListItem *>(lb_fktliste->currentItem());
 333         QString const fstr = currentItem->text();
 334         if ( !m_view->parser()->sendFunction(getId( currentItem->text()) ) )
 335                 return;
 336         slotDelete();
 337 }