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 <QPushButton>
  32 #include <QRadioButton>
  33
  34 /*
  35  * Constructors + destructor
  36  */
  37
  38 /// Construct with colour information.
  39 tcColourMapWidget::tcColourMapWidget(const QStringList& outputBands, QWidget* parent)
  40 : QScrollArea(parent)
  41 , m_layout(0)
  42 , m_inputSignalMapper(new QSignalMapper(this))
  43 , m_groupSignalMapper(new QSignalMapper(this))
  44 , m_outputBandButtonGroups()
  45 , m_numInputBands(0)
  46 {
  47   QWidget* widget = new QWidget(this);
  48   m_layout = new QGridLayout(widget);
  49   setWidget(widget);
  50   setWidgetResizable(true);
  51
  52   foreach (QString band, outputBands)
  53   {
  54     QButtonGroup* buttonGroup = new QButtonGroup(this);
  55     connect(buttonGroup, SIGNAL(buttonClicked(int)), m_groupSignalMapper, SLOT(map()));
  56     m_groupSignalMapper->setMapping(buttonGroup, m_outputBandButtonGroups.size());
  57     m_outputBandButtonGroups << buttonGroup;
  58
  59     m_layout->addWidget(new QLabel(band, this), 0, m_outputBandButtonGroups.size(), Qt::AlignHCenter);
  60   }
  61   connect(m_groupSignalMapper, SIGNAL(mapped(int)), this, SLOT(inputBandChangedSlot(int)));
  62   connect(m_inputSignalMapper, SIGNAL(mapped(int)), this, SIGNAL(inputBandClicked(int)));
  63 }
  64
  65 /// Destructor.
  66 tcColourMapWidget::~tcColourMapWidget()
  67 {
  68 }
  69
  70 /*
  71  * Main interface
  72  */
  73
  74 /// Clear bands.
  75 void tcColourMapWidget::clearInputBands()
  76 {
  77 }
  78
  79 /// Add an input band.
  80 void tcColourMapWidget::addInputBand(const QString& name, const QString& description)
  81 {
  82   ++m_numInputBands;
  83   QPushButton* mainLabel = new QPushButton(name, this);
  84   mainLabel->setToolTip(description);
  85   m_layout->addWidget(mainLabel, m_numInputBands, 0);
  86   connect(mainLabel, SIGNAL(clicked()), m_inputSignalMapper, SLOT(map()));
  87   m_inputSignalMapper->setMapping(mainLabel, m_numInputBands-1);
  88   for (int i = 0; i < m_outputBandButtonGroups.size(); ++i)
  89   {
  90     QRadioButton* radio = new QRadioButton(this);
  91     m_outputBandButtonGroups[i]->addButton(radio, m_numInputBands-1);
  92     m_layout->addWidget(radio, m_numInputBands, 1 + i, Qt::AlignHCenter);
  93   }
  94 }
  95
  96 /*
  97  * Accessors
  98  */
  99
 100 /// Get the index of the input band assigned to an output band.
 101 int tcColourMapWidget::inputBand(int outputBand) const
 102 {
 103   return m_outputBandButtonGroups[outputBand]->checkedId();
 104 }
 105
 106 /*
 107  * Public slots
 108  */
 109
 110 /// Set the input band assigned to an output.
 111 void tcColourMapWidget::setInputBand(int output, int input)
 112 {
 113   m_outputBandButtonGroups[output]->button(input)->setChecked(true);
 114 }
 115
 116 /*
 117  * Private slots
 118  */
 119
 120 /// Indicates that the input band assigned to an output has changed.
 121 void tcColourMapWidget::inputBandChangedSlot(int output)
 122 {
 123   emit inputBandChanged(output, m_outputBandButtonGroups[output]->checkedId());
 124 }