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 : QScrollArea(parent)
  40 , m_layout(0)
  41 , m_signalMapper(new QSignalMapper(this))
  42 , m_outputBandButtonGroups()
  43 , m_numInputBands(0)
  44 {
  45   QWidget* widget = new QWidget(this);
  46   m_layout = new QGridLayout(widget);
  47   setWidget(widget);
  48   setWidgetResizable(true);
  49
  50   foreach (QString band, outputBands)
  51   {
  52     QButtonGroup* buttonGroup = new QButtonGroup(this);
  53     connect(buttonGroup, SIGNAL(buttonClicked(int)), m_signalMapper, SLOT(map()));
  54     m_signalMapper->setMapping(buttonGroup, m_outputBandButtonGroups.size());
  55     m_outputBandButtonGroups << buttonGroup;
  56
  57     m_layout->addWidget(new QLabel(band, this), 0, m_outputBandButtonGroups.size(), Qt::AlignHCenter);
  58   }
  59   connect(m_signalMapper, SIGNAL(mapped(int)), this, SLOT(inputBandChangedSlot(int)));
  60 }
  61
  62 /// Destructor.
  63 tcColourMapWidget::~tcColourMapWidget()
  64 {
  65 }
  66
  67 /*
  68  * Main interface
  69  */
  70
  71 /// Clear bands.
  72 void tcColourMapWidget::clearInputBands()
  73 {
  74 }
  75
  76 /// Add an input band.
  77 void tcColourMapWidget::addInputBand(const QString& name, const QString& description)
  78 {
  79   ++m_numInputBands;
  80   QLabel* mainLabel = new QLabel(name, this);
  81   mainLabel->setToolTip(description);
  82   m_layout->addWidget(mainLabel, m_numInputBands, 0);
  83   for (int i = 0; i < m_outputBandButtonGroups.size(); ++i)
  84   {
  85     QRadioButton* radio = new QRadioButton(this);
  86     m_outputBandButtonGroups[i]->addButton(radio, m_numInputBands-1);
  87     m_layout->addWidget(radio, m_numInputBands, 1 + i, Qt::AlignHCenter);
  88   }
  89 }
  90
  91 /*
  92  * Accessors
  93  */
  94
  95 /// Get the index of the input band assigned to an output band.
  96 int tcColourMapWidget::inputBand(int outputBand) const
  97 {
  98   return m_outputBandButtonGroups[outputBand]->checkedId();
  99 }
 100
 101 /*
 102  * Public slots
 103  */
 104
 105 /// Set the input band assigned to an output.
 106 void tcColourMapWidget::setInputBand(int output, int input)
 107 {
 108   m_outputBandButtonGroups[output]->button(input)->setChecked(true);
 109 }
 110
 111 /*
 112  * Private slots
 113  */
 114
 115 /// Indicates that the input band assigned to an output has changed.
 116 void tcColourMapWidget::inputBandChangedSlot(int output)
 117 {
 118   emit inputBandChanged(output, m_outputBandButtonGroups[output]->checkedId());
 119 }