tcColourMapWidget.cpp

   1 /***************************************************************************
   2  *   This file is part of Tecorrec.                                        *
   3  *   Copyright 2008 James Hogan <james@albanarts.com>                      *
   4  *                                                                         *
   5  *   Tecorrec is free software: you can redistribute it and/or modify      *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation, either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   Tecorrec is distributed in the hope that it will be useful,           *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with Tecorrec.  If not, write to the Free Software Foundation,  *
  17  *   Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.   *
  18  ***************************************************************************/
  19
  20 /**
  21  * @file tcColourMapWidget.cpp
  22  * @brief Colour mapping widget.
  23  */
  24
  25 #include "tcColourMapWidget.h"
  26
  27 #include <QGridLayout>
  28 #include <QButtonGroup>
  29 #include <QSignalMapper>
  30 #include <QLabel>
  31 #include <QRadioButton>
  32
  33 /*
  34  * Constructors + destructor
  35  */
  36
  37 /// Construct with colour information.
  38 tcColourMapWidget::tcColourMapWidget(const QStringList& outputBands, QWidget* parent)
  39 : QWidget(parent)
  40 , m_layout(new QGridLayout(this))
  41 , m_signalMapper(new QSignalMapper(this))
  42 , m_outputBandButtonGroups()
  43 , m_numInputBands(0)
  44 {
  45   foreach (QString band, outputBands)
  46   {
  47     QButtonGroup* buttonGroup = new QButtonGroup(this);
  48     connect(buttonGroup, SIGNAL(buttonClicked(int)), m_signalMapper, SLOT(map()));
  49     m_signalMapper->setMapping(buttonGroup, m_outputBandButtonGroups.size());
  50     m_outputBandButtonGroups << buttonGroup;
  51
  52     m_layout->addWidget(new QLabel(band, this), 0, m_outputBandButtonGroups.size(), Qt::AlignHCenter);
  53   }
  54   connect(m_signalMapper, SIGNAL(mapped(int)), this, SLOT(inputBandChangedSlot(int)));
  55 }
  56
  57 /// Destructor.
  58 tcColourMapWidget::~tcColourMapWidget()
  59 {
  60 }
  61
  62 /*
  63  * Main interface
  64  */
  65
  66 /// Clear bands.
  67 void tcColourMapWidget::clearInputBands()
  68 {
  69 }
  70
  71 /// Add an input band.
  72 void tcColourMapWidget::addInputBand(const QString& name, const QString& description)
  73 {
  74   ++m_numInputBands;
  75   QLabel* mainLabel = new QLabel(name, this);
  76   mainLabel->setToolTip(description);
  77   m_layout->addWidget(mainLabel, m_numInputBands, 0);
  78   for (int i = 0; i < m_outputBandButtonGroups.size(); ++i)
  79   {
  80     QRadioButton* radio = new QRadioButton(this);
  81     m_outputBandButtonGroups[i]->addButton(radio, m_numInputBands-1);
  82     m_layout->addWidget(radio, m_numInputBands, 1 + i, Qt::AlignHCenter);
  83   }
  84 }
  85
  86 /*
  87  * Accessors
  88  */
  89
  90 /// Get the index of the input band assigned to an output band.
  91 int tcColourMapWidget::inputBand(int outputBand) const
  92 {
  93   return m_outputBandButtonGroups[outputBand]->checkedId();
  94 }
  95
  96 /*
  97  * Public slots
  98  */
  99
 100 /// Set the input band assigned to an output.
 101 void tcColourMapWidget::setInputBand(int output, int input)
 102 {
 103   m_outputBandButtonGroups[output]->button(input)->setChecked(true);
 104 }
 105
 106 /*
 107  * Private slots
 108  */
 109
 110 /// Indicates that the input band assigned to an output has changed.
 111 void tcColourMapWidget::inputBandChangedSlot(int output)
 112 {
 113   emit inputBandChanged(output, m_outputBandButtonGroups[output]->checkedId());
 114 }