kmplot/kmplot/ksliderwindow.cpp

   1 /*
   2 * KmPlot - a math. function plotter for the KDE-Desktop
   3 *
   4 * Copyright (C) 2005  Fredrik Edemar
   5 *                     f_edemar@linux.se
   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 // Qt includes
  26 #include <qcursor.h>
  27 #include <qslider.h>
  28 #include <qtooltip.h>
  29 #include <qwhatsthis.h>
  30
  31 // KDE includes
  32 #include <kaction.h>
  33 #include <kconfig.h>
  34 #include <kdebug.h>
  35 #include <kinputdialog.h>
  36 #include <klocale.h>
  37
  38 #include <limits.h>
  39 #include <math.h>
  40 #include <stdlib.h>
  41
  42 // local includes
  43 #include "ksliderwindow.h"
  44
  45 KSliderWindow::KSliderWindow(QWidget* parent, int num ) :
  46         SliderWindow( parent, "", false, Qt::WStyle_Tool-Qt::WStyle_Maximize ), m_num(num)
  47 {
  48         setCaption(i18n( "Slider %1" ).arg( num+1 ) );
  49         QToolTip::add( slider, i18n( "Slider no. %1" ).arg( num+1 ));
  50         QWhatsThis::add( this, i18n( "Move slider to change the parameter of the function plot connected to this slider." ) );
  51
  52         // load the min and max value + the current value
  53         KConfig config( "kmplotrc" );
  54         config.setGroup( "slider" + QString::number(num) );
  55         slider->setMinValue( config.readNumEntry( "min", 0) );
  56         slider->setMaxValue( config.readNumEntry( "max", 100) );
  57         slider->setValue( config.readNumEntry( "value", 50) );
  58         slider->setPageStep( (int)ceil((abs(slider->minValue()) + abs(slider->maxValue()))/10.) );
  59
  60         slider->installEventFilter(this);
  61         installEventFilter(this);
  62
  63         m_popupmenu = new KPopupMenu(this);
  64         KAction *mnuMinValue = new KAction(i18n("&Change minimum value") ,0,this, SLOT( mnuMinValue_clicked() ),0);
  65         mnuMinValue->plug(m_popupmenu);
  66         KAction *mnuMaxValue = new KAction(i18n("&Change maximum value") ,0,this, SLOT( mnuMaxValue_clicked() ),0 );
  67         mnuMaxValue->plug(m_popupmenu);
  68 }
  69
  70 KSliderWindow::~KSliderWindow()
  71 {
  72         // save the min and max value + the current value
  73         KConfig config( "kmplotrc" );
  74         config.setGroup( "slider" + QString::number(m_num) );
  75         config.writeEntry( "min", slider->minValue() );
  76         config.writeEntry( "max", slider->maxValue() );
  77         config.writeEntry( "value", slider->value() );
  78 }
  79
  80 bool KSliderWindow::eventFilter( QObject *obj, QEvent *ev )
  81 {
  82         if (ev->type() == QEvent::MouseButtonPress)
  83         {
  84                 QMouseEvent *e = (QMouseEvent *)ev;
  85                 if (e->button() != Qt::RightButton)
  86                         return SliderWindow::eventFilter( obj, ev );
  87                 m_popupmenu->exec(QCursor::pos());
  88                 return true;
  89         }
  90         return SliderWindow::eventFilter( obj, ev );
  91 }
  92
  93 void KSliderWindow::closeEvent( QCloseEvent * e)
  94 {
  95         emit windowClosed(m_num);
  96         e->accept();
  97 }
  98
  99 void KSliderWindow::mnuMinValue_clicked()
 100 {
 101         bool ok;
 102         int const result = KInputDialog::getInteger(i18n("Change minimum value"), i18n("Type a new minimum value for the slider:"), slider->minValue(), INT_MIN, INT_MAX, 1, 10, &ok);
 103         if (!ok)
 104                 return;
 105         slider->setMinValue(result);
 106         slider->setPageStep( (int)ceil((abs(slider->maxValue()) + abs(result))/10.) );
 107         setFocus();
 108 }
 109
 110 void KSliderWindow::mnuMaxValue_clicked()
 111 {
 112         bool ok;
 113         int const result = KInputDialog::getInteger(i18n("Change maximum value"), i18n("Type a new maximum value for the slider:"), slider->maxValue(), INT_MIN, INT_MAX, 1, 10, &ok);
 114         if (!ok)
 115                 return;
 116         slider->setMaxValue(result);
 117         slider->setPageStep( (int)ceil((abs(slider->minValue()) + abs(result))/10.) );
 118         setFocus();
 119 }
 120
 121 #include "ksliderwindow.moc"