diff widgets/CSVFormatDialog.cpp @ 378:22b72f0f6a4e

* More work to abstract out interactive components used in the data library,
  so that it does not need to depend on QtGui.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/widgets/CSVFormatDialog.cpp	Fri Mar 14 17:14:21 2008 +0000
@@ -0,0 +1,270 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    This file copyright 2006 Chris Cannam.
+    
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#include "CSVFormatDialog.h"
+
+#include <QFrame>
+#include <QGridLayout>
+#include <QPushButton>
+#include <QHBoxLayout>
+#include <QVBoxLayout>
+#include <QTableWidget>
+#include <QComboBox>
+#include <QLabel>
+
+
+CSVFormatDialog::CSVFormatDialog(QWidget *parent, CSVFormat format,
+				 size_t defaultSampleRate) :
+    QDialog(parent),
+    m_modelType(CSVFormat::OneDimensionalModel),
+    m_timingType(CSVFormat::ExplicitTiming),
+    m_timeUnits(CSVFormat::TimeAudioFrames),
+    m_separator(""),
+    m_behaviour(QString::KeepEmptyParts)
+{
+    setModal(true);
+    setWindowTitle(tr("Select Data Format"));
+
+    m_modelType = format.getModelType();
+    m_timingType = format.getTimingType();
+    m_timeUnits = format.getTimeUnits();
+    m_separator = format.getSeparator();
+    m_sampleRate = format.getSampleRate();
+    m_windowSize = format.getWindowSize();
+    m_behaviour = format.getSplitBehaviour();
+    m_example = format.getExample();
+    m_maxExampleCols = format.getMaxExampleCols();
+
+    QGridLayout *layout = new QGridLayout;
+
+    layout->addWidget(new QLabel(tr("<b>Select Data Format</b><p>Please select the correct data format for this file.")),
+		      0, 0, 1, 4);
+
+    layout->addWidget(new QLabel(tr("Each row specifies:")), 1, 0);
+
+    m_modelTypeCombo = new QComboBox;
+    m_modelTypeCombo->addItem(tr("A point in time"));
+    m_modelTypeCombo->addItem(tr("A value at a time"));
+    m_modelTypeCombo->addItem(tr("A set of values"));
+    layout->addWidget(m_modelTypeCombo, 1, 1, 1, 2);
+    connect(m_modelTypeCombo, SIGNAL(activated(int)),
+	    this, SLOT(modelTypeChanged(int)));
+    m_modelTypeCombo->setCurrentIndex(int(m_modelType));
+
+    layout->addWidget(new QLabel(tr("The first column contains:")), 2, 0);
+    
+    m_timingTypeCombo = new QComboBox;
+    m_timingTypeCombo->addItem(tr("Time, in seconds"));
+    m_timingTypeCombo->addItem(tr("Time, in audio sample frames"));
+    m_timingTypeCombo->addItem(tr("Data (rows are consecutive in time)"));
+    layout->addWidget(m_timingTypeCombo, 2, 1, 1, 2);
+    connect(m_timingTypeCombo, SIGNAL(activated(int)),
+	    this, SLOT(timingTypeChanged(int)));
+    m_timingTypeCombo->setCurrentIndex(m_timingType == CSVFormat::ExplicitTiming ?
+                                       m_timeUnits == CSVFormat::TimeSeconds ? 0 : 1 : 2);
+
+    m_sampleRateLabel = new QLabel(tr("Audio sample rate (Hz):"));
+    layout->addWidget(m_sampleRateLabel, 3, 0);
+    
+    size_t sampleRates[] = {
+	8000, 11025, 12000, 22050, 24000, 32000,
+	44100, 48000, 88200, 96000, 176400, 192000
+    };
+
+    m_sampleRateCombo = new QComboBox;
+    m_sampleRate = defaultSampleRate;
+    for (size_t i = 0; i < sizeof(sampleRates) / sizeof(sampleRates[0]); ++i) {
+	m_sampleRateCombo->addItem(QString("%1").arg(sampleRates[i]));
+	if (sampleRates[i] == m_sampleRate) m_sampleRateCombo->setCurrentIndex(i);
+    }
+    m_sampleRateCombo->setEditable(true);
+
+    layout->addWidget(m_sampleRateCombo, 3, 1);
+    connect(m_sampleRateCombo, SIGNAL(activated(QString)),
+	    this, SLOT(sampleRateChanged(QString)));
+    connect(m_sampleRateCombo, SIGNAL(editTextChanged(QString)),
+	    this, SLOT(sampleRateChanged(QString)));
+
+    m_windowSizeLabel = new QLabel(tr("Frame increment between rows:"));
+    layout->addWidget(m_windowSizeLabel, 4, 0);
+
+    m_windowSizeCombo = new QComboBox;
+    m_windowSize = 1024;
+    for (int i = 0; i <= 16; ++i) {
+	int value = 1 << i;
+	m_windowSizeCombo->addItem(QString("%1").arg(value));
+	if (value == int(m_windowSize)) m_windowSizeCombo->setCurrentIndex(i);
+    }
+    m_windowSizeCombo->setEditable(true);
+
+    layout->addWidget(m_windowSizeCombo, 4, 1);
+    connect(m_windowSizeCombo, SIGNAL(activated(QString)),
+	    this, SLOT(windowSizeChanged(QString)));
+    connect(m_windowSizeCombo, SIGNAL(editTextChanged(QString)),
+	    this, SLOT(windowSizeChanged(QString)));
+
+    layout->addWidget(new QLabel(tr("\nExample data from file:")), 5, 0, 1, 4);
+
+    m_exampleWidget = new QTableWidget
+	(std::min(10, m_example.size()), m_maxExampleCols);
+
+    layout->addWidget(m_exampleWidget, 6, 0, 1, 4);
+    layout->setColumnStretch(3, 10);
+    layout->setRowStretch(4, 10);
+
+    QPushButton *ok = new QPushButton(tr("OK"));
+    connect(ok, SIGNAL(clicked()), this, SLOT(accept()));
+    ok->setDefault(true);
+
+    QPushButton *cancel = new QPushButton(tr("Cancel"));
+    connect(cancel, SIGNAL(clicked()), this, SLOT(reject()));
+
+    QHBoxLayout *buttonLayout = new QHBoxLayout;
+    buttonLayout->addStretch(1);
+    buttonLayout->addWidget(ok);
+    buttonLayout->addWidget(cancel);
+
+    QVBoxLayout *mainLayout = new QVBoxLayout;
+    mainLayout->addLayout(layout);
+    mainLayout->addLayout(buttonLayout);
+
+    setLayout(mainLayout);
+    
+    timingTypeChanged(m_timingTypeCombo->currentIndex());
+}
+
+CSVFormatDialog::~CSVFormatDialog()
+{
+}
+
+CSVFormat
+CSVFormatDialog::getFormat() const
+{
+    CSVFormat format;
+    format.setModelType(m_modelType);
+    format.setTimingType(m_timingType);
+    format.setTimeUnits(m_timeUnits);
+    format.setSeparator(m_separator);
+    format.setSampleRate(m_sampleRate);
+    format.setWindowSize(m_windowSize);
+    format.setSplitBehaviour(m_behaviour);
+    return format;
+}
+
+void
+CSVFormatDialog::populateExample()
+{
+    m_exampleWidget->setColumnCount
+        (m_timingType == CSVFormat::ExplicitTiming ?
+	 m_maxExampleCols - 1 : m_maxExampleCols);
+
+    m_exampleWidget->setHorizontalHeaderLabels(QStringList());
+
+    for (int i = 0; i < m_example.size(); ++i) {
+	for (int j = 0; j < m_example[i].size(); ++j) {
+
+	    QTableWidgetItem *item = new QTableWidgetItem(m_example[i][j]);
+
+	    if (j == 0) {
+		if (m_timingType == CSVFormat::ExplicitTiming) {
+		    m_exampleWidget->setVerticalHeaderItem(i, item);
+		    continue;
+		} else {
+		    QTableWidgetItem *header =
+			new QTableWidgetItem(QString("%1").arg(i));
+		    header->setFlags(Qt::ItemIsEnabled);
+		    m_exampleWidget->setVerticalHeaderItem(i, header);
+		}
+	    }
+	    int index = j;
+	    if (m_timingType == CSVFormat::ExplicitTiming) --index;
+	    item->setFlags(Qt::ItemIsEnabled);
+	    m_exampleWidget->setItem(i, index, item);
+	}
+    }
+}
+
+void
+CSVFormatDialog::modelTypeChanged(int type)
+{
+    m_modelType = (CSVFormat::ModelType)type;
+
+    if (m_modelType == CSVFormat::ThreeDimensionalModel) {
+        // We can't load 3d models with explicit timing, because the 3d
+        // model is dense so we need a fixed sample increment
+        m_timingTypeCombo->setCurrentIndex(2);
+        timingTypeChanged(2);
+    }
+}
+
+void
+CSVFormatDialog::timingTypeChanged(int type)
+{
+    switch (type) {
+
+    case 0:
+	m_timingType = CSVFormat::ExplicitTiming;
+	m_timeUnits = CSVFormat::TimeSeconds;
+	m_sampleRateCombo->setEnabled(false);
+	m_sampleRateLabel->setEnabled(false);
+	m_windowSizeCombo->setEnabled(false);
+	m_windowSizeLabel->setEnabled(false);
+        if (m_modelType == CSVFormat::ThreeDimensionalModel) {
+            m_modelTypeCombo->setCurrentIndex(1);
+            modelTypeChanged(1);
+        }
+	break;
+
+    case 1:
+	m_timingType = CSVFormat::ExplicitTiming;
+	m_timeUnits = CSVFormat::TimeAudioFrames;
+	m_sampleRateCombo->setEnabled(true);
+	m_sampleRateLabel->setEnabled(true);
+	m_windowSizeCombo->setEnabled(false);
+	m_windowSizeLabel->setEnabled(false);
+        if (m_modelType == CSVFormat::ThreeDimensionalModel) {
+            m_modelTypeCombo->setCurrentIndex(1);
+            modelTypeChanged(1);
+        }
+	break;
+
+    case 2:
+	m_timingType = CSVFormat::ImplicitTiming;
+	m_timeUnits = CSVFormat::TimeWindows;
+	m_sampleRateCombo->setEnabled(true);
+	m_sampleRateLabel->setEnabled(true);
+	m_windowSizeCombo->setEnabled(true);
+	m_windowSizeLabel->setEnabled(true);
+	break;
+    }
+
+    populateExample();
+}
+
+void
+CSVFormatDialog::sampleRateChanged(QString rateString)
+{
+    bool ok = false;
+    int sampleRate = rateString.toInt(&ok);
+    if (ok) m_sampleRate = sampleRate;
+}
+
+void
+CSVFormatDialog::windowSizeChanged(QString sizeString)
+{
+    bool ok = false;
+    int size = sizeString.toInt(&ok);
+    if (ok) m_windowSize = size;
+}