ecvColorGradientDlg.cpp

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#include "ecvColorGradientDlg.h"
 
// common
#include <ecvQtHelpers.h>
 
// Qt
#include <QColorDialog>
 
// system
#include <assert.h>
 
// persistent parameters
static QColor s_firstColor(Qt::black);
static QColor s_secondColor(Qt::white);
static ccColorGradientDlg::GradientType s_lastType(ccColorGradientDlg::Default);
static double s_lastFreq = 5.0;
static int s_lastDimIndex = 2;
 
ccColorGradientDlg::ccColorGradientDlg(QWidget* parent)
    : QDialog(parent, Qt::Tool), Ui::ColorGradientDialog() {
    setupUi(this);
 
    connect(firstColorButton, &QAbstractButton::clicked, this,
            &ccColorGradientDlg::changeFirstColor);
    connect(secondColorButton, &QAbstractButton::clicked, this,
            &ccColorGradientDlg::changeSecondColor);
 
    // restore previous parameters
    ccQtHelpers::SetButtonColor(secondColorButton, s_secondColor);
    ccQtHelpers::SetButtonColor(firstColorButton, s_firstColor);
    setType(s_lastType);
    bandingFreqSpinBox->setValue(s_lastFreq);
    directionComboBox->setCurrentIndex(s_lastDimIndex);
}
 
unsigned char ccColorGradientDlg::getDimension() const {
    s_lastDimIndex = directionComboBox->currentIndex();
    return static_cast<unsigned char>(s_lastDimIndex);
}
 
void ccColorGradientDlg::setType(ccColorGradientDlg::GradientType type) {
    switch (type) {
        case Default:
            defaultRampRadioButton->setChecked(true);
            break;
        case TwoColors:
            customRampRadioButton->setChecked(true);
            break;
        case Banding:
            bandingRadioButton->setChecked(true);
            break;
        default:
            assert(false);
    }
}
 
ccColorGradientDlg::GradientType ccColorGradientDlg::getType() const {
    // ugly hack: we use 's_lastType' here as the type is only requested
    // when the dialog is accepted
    if (customRampRadioButton->isChecked())
        s_lastType = TwoColors;
    else if (bandingRadioButton->isChecked())
        s_lastType = Banding;
    else
        s_lastType = Default;
 
    return s_lastType;
}
 
void ccColorGradientDlg::getColors(QColor& first, QColor& second) const {
    assert(customRampRadioButton->isChecked());
    first = s_firstColor;
    second = s_secondColor;
}
 
double ccColorGradientDlg::getBandingFrequency() const {
    // ugly hack: we use 's_lastFreq' here as the frequency is only requested
    // when the dialog is accepted
    s_lastFreq = bandingFreqSpinBox->value();
    return s_lastFreq;
}
 
void ccColorGradientDlg::changeFirstColor() {
    QColor newCol = QColorDialog::getColor(s_firstColor, this);
    if (newCol.isValid()) {
        s_firstColor = newCol;
        ccQtHelpers::SetButtonColor(firstColorButton, s_firstColor);
    }
}
 
void ccColorGradientDlg::changeSecondColor() {
    QColor newCol = QColorDialog::getColor(s_secondColor, this);
    if (newCol.isValid()) {
        s_secondColor = newCol;
        ccQtHelpers::SetButtonColor(secondColorButton, s_secondColor);
    }
}