view widgets/RangeInputDialog.cpp @ 959:2633a1d73e39

Address #1214, layer import produces wrong layer type. We needed a more principled approach to making sure the format gets updated properly and the dialog elements are consistent (basically separating making the dialog elements consistent from subsequently updating the format). This change should provide that, though there may be gotchas still.

/* -*- 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 2007 QMUL.
    
    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 "RangeInputDialog.h"

#include <QDoubleSpinBox>
#include <QGridLayout>
#include <QLabel>
#include <QHBoxLayout>
#include <QDialogButtonBox>
#include <QPushButton>

RangeInputDialog::RangeInputDialog(QString title, QString message,
                                   QString unit, float min, float max, 
                                   QWidget *parent) :
    QDialog(parent)
{
    QGridLayout *grid = new QGridLayout;
    setLayout(grid);

    setWindowTitle(title);
    
    QLabel *messageLabel = new QLabel;
    messageLabel->setText(message);
    grid->addWidget(messageLabel, 0, 0, 1, 5);

    m_rangeStart = new QDoubleSpinBox;
    m_rangeStart->setDecimals(4);
    m_rangeStart->setMinimum(min);
    m_rangeStart->setMaximum(max);
    m_rangeStart->setSuffix(unit);
    grid->addWidget(m_rangeStart, 1, 1);
    connect(m_rangeStart, SIGNAL(valueChanged(double)),
            this, SLOT(rangeStartChanged(double)));
    
    grid->addWidget(new QLabel(tr(" to ")), 1, 2);

    m_rangeEnd = new QDoubleSpinBox;
    m_rangeEnd->setDecimals(4);
    m_rangeEnd->setMinimum(min);
    m_rangeEnd->setMaximum(max);
    m_rangeEnd->setSuffix(unit);
    grid->addWidget(m_rangeEnd, 1, 3);
    connect(m_rangeEnd, SIGNAL(valueChanged(double)),
            this, SLOT(rangeEndChanged(double)));

    QDialogButtonBox *bb = new QDialogButtonBox(QDialogButtonBox::Ok |
                                                QDialogButtonBox::Cancel);
    grid->addWidget(bb, 2, 0, 1, 5);
    connect(bb, SIGNAL(accepted()), this, SLOT(accept()));
    connect(bb, SIGNAL(rejected()), this, SLOT(reject()));
}

RangeInputDialog::~RangeInputDialog()
{
}

void
RangeInputDialog::getRange(float &min, float &max)
{
    min = float(m_rangeStart->value());
    max = float(m_rangeEnd->value());

    if (min > max) {
        float tmp = min;
        min = max;
        max = tmp;
    }
}

void
RangeInputDialog::setRange(float start, float end)
{
    if (start > end) {
        float tmp = start;
        start = end;
        end = tmp;
    }

    blockSignals(true);
    m_rangeStart->setValue(start);
    m_rangeEnd->setValue(end);
    blockSignals(false);
}

void
RangeInputDialog::rangeStartChanged(double min)
{
    double max = m_rangeEnd->value();
    if (min > max) {
        double tmp = min;
        min = max;
        max = tmp;
    }
    emit rangeChanged(float(min), float(max));
}


void
RangeInputDialog::rangeEndChanged(double max)
{
    double min = m_rangeStart->value();
    if (min > max) {
        double tmp = min;
        min = max;
        max = tmp;
    }
    emit rangeChanged(float(min), float(max));
}