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us144mkii/tascam_controls/src/mainwindow.cpp

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#include "mainwindow.h"
#include <QApplication>
#include <QDialog>
#include <QDialogButtonBox>
#include <QMessageBox>
#include <QPainter>
#include <QDebug>
#include <QTimer>
#include <QLabel>
#include <QComboBox>
#include <QPushButton>
#include <QGridLayout>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QIcon>
const QString DARK_STYLESHEET = R"(
QWidget {
background-color: transparent;
color: #DAE0ED;
font-family: Arial;
}
QLabel {
background-color: transparent;
}
QLabel#Title {
font-size: 15pt;
font-weight: bold;
color: #FFFFFF;
}
QLabel#SectionHeader {
font-size: 11pt;
font-weight: bold;
color: #92E8FF;
margin-top: 10px;
margin-bottom: 3px;
}
QLabel#ControlLabel {
font-size: 9pt;
color: #CBD2E6;
}
QComboBox {
background-color: rgba(10, 10, 20, 0.25);
border: 1px solid #3A4760;
border-radius: 4px;
padding: 4px;
color: #DAE0ED;
}
QComboBox:hover {
background-color: rgba(15, 15, 25, 0.35);
border: 1px solid #6482B4;
}
QComboBox::drop-down {
border: none;
}
QComboBox QAbstractItemView {
background-color: rgba(15, 15, 25, 0.9);
border: 1px solid #3A4760;
selection-background-color: #6A3AB1;
color: #DAE0ED;
}
QPushButton {
background-color: rgba(10, 10, 20, 0.25);
border: 1px solid #3A4760;
border-radius: 4px;
padding: 5px;
color: #92E8FF;
}
QPushButton:hover {
background-color: rgba(15, 15, 25, 0.35);
border: 1px solid #6482B4;
}
QPushButton:pressed {
background-color: rgba(20, 20, 30, 0.45);
border: 1px solid #A020F0;
}
)";
MainWindow::MainWindow(QWidget *parent)
: QWidget(parent)
, m_alsa()
, m_aboutDialog(nullptr)
{
if (!m_alsa.isCardFound()) {
QMessageBox::critical(this, "Error", "TASCAM US-144/US-144MKII Not Found.\nPlease ensure the device is connected and the 'us144mkii' driver is loaded.");
QTimer::singleShot(0, this, &QWidget::close);
return;
}
initUi();
loadDynamicSettings();
}
void MainWindow::initUi() {
setWindowTitle("TASCAM US-144MKII Control Panel");
setWindowIcon(QIcon(":/tascam-control-panel.png"));
setFixedSize(550, 450);
setStyleSheet(DARK_STYLESHEET);
m_background.load(":/bg.png");
if (m_background.isNull()) {
qWarning() << "Failed to load background image from resources!";
}
auto *topLevelLayout = new QHBoxLayout(this);
topLevelLayout->setContentsMargins(20, 20, 20, 20);
topLevelLayout->setSpacing(25);
auto *leftPanel = new QVBoxLayout();
auto *middlePanel = new QVBoxLayout();
auto *logoLabel = new QLabel();
logoLabel->setPixmap(QPixmap(":/logo.png").scaledToWidth(250, Qt::SmoothTransformation));
auto *titleLabel = new QLabel("US-144 MKII Control Panel");
titleLabel->setObjectName("Title");
auto *infoGrid = new QGridLayout();
infoGrid->setSpacing(5);
const QMap<QString, QString> infoData = {
{"Device:", "device"},
{"Sample Width:", "sample_width"}, {"Sample Rate:", "sample_rate"}
};
int row = 0;
for (auto it = infoData.constBegin(); it != infoData.constEnd(); ++it) {
auto *label = new QLabel(it.key());
label->setFont(QFont("Arial", 9, QFont::Bold));
auto *valueLabel = new QLabel("N/A");
valueLabel->setFont(QFont("Arial", 9));
infoGrid->addWidget(label, row, 0);
infoGrid->addWidget(valueLabel, row, 1);
m_infoLabels[it.value()] = valueLabel;
row++;
}
auto *deviceImageLabel = new QLabel();
deviceImageLabel->setPixmap(QPixmap(":/device.png").scaled(250, 250, Qt::KeepAspectRatio, Qt::SmoothTransformation));
deviceImageLabel->setAlignment(Qt::AlignCenter);
leftPanel->addWidget(logoLabel);
leftPanel->addWidget(titleLabel);
leftPanel->addLayout(infoGrid);
leftPanel->addStretch();
leftPanel->addWidget(deviceImageLabel);
middlePanel->setSpacing(0);
auto addSection = [&](const QString& title, QWidget* widget) {
auto* header = new QLabel(title);
header->setObjectName("SectionHeader");
middlePanel->addWidget(header);
middlePanel->addWidget(widget);
};
auto capture12Pair = createControlWidget("ch1 and ch2", {"analog inputs", "digital inputs"});
m_capture12Combo = capture12Pair.second;
m_capture12Combo->setToolTip("Select the source for capture channels 1 and 2.");
auto capture34Pair = createControlWidget("ch3 and ch4", {"analog inputs", "digital inputs"});
m_capture34Combo = capture34Pair.second;
m_capture34Combo->setToolTip("Select the source for capture channels 3 and 4.");
addSection("INPUTS", capture12Pair.first);
middlePanel->addWidget(capture34Pair.first);
auto lineOutPair = createControlWidget("ch1 and ch2", {"ch1 and ch2", "ch3 and ch4"});
m_lineOutCombo = lineOutPair.second;
m_lineOutCombo->setToolTip("Select the source for the line outputs.");
addSection("LINE OUTPUTS", lineOutPair.first);
auto digitalOutPair = createControlWidget("ch3 and ch4", {"ch1 and ch2", "ch3 and ch4"});
m_digitalOutCombo = digitalOutPair.second;
m_digitalOutCombo->setToolTip("Select the source for the digital outputs.");
addSection("DIGITAL OUTPUTS", digitalOutPair.first);
middlePanel->addStretch();
auto *buttonLayout = new QHBoxLayout();
auto *aboutButton = new QPushButton("About");
aboutButton->setFixedSize(100, 30);
connect(aboutButton, &QPushButton::clicked, this, &MainWindow::showAboutDialog);
buttonLayout->addWidget(aboutButton);
middlePanel->addLayout(buttonLayout);
topLevelLayout->addLayout(leftPanel, 1);
topLevelLayout->addLayout(middlePanel, 1);
connect(m_lineOutCombo, &QComboBox::currentIndexChanged, this, [this](int index){ onControlChanged("Line Playback Source", index, m_lineOutCombo); });
connect(m_digitalOutCombo, &QComboBox::currentIndexChanged, this, [this](int index){ onControlChanged("Digital Playback Source", index, m_digitalOutCombo); });
connect(m_capture12Combo, &QComboBox::currentIndexChanged, this, [this](int index){ onControlChanged("Ch1/2 Capture Source", index, m_capture12Combo); });
connect(m_capture34Combo, &QComboBox::currentIndexChanged, this, [this](int index){ onControlChanged("Ch3/4 Capture Source", index, m_capture34Combo); });
}
void MainWindow::loadDynamicSettings() {
m_infoLabels["device"]->setText("US-144 MKII");
m_infoLabels["sample_width"]->setText("24 bits");
long rate_val = m_alsa.getControlValue("Sample Rate");
m_infoLabels["sample_rate"]->setText(rate_val > 0 ? QString("%1 kHz").arg(rate_val / 1000.0, 0, 'f', 1) : "N/A (inactive)");
updateCombo(m_lineOutCombo, "Line Playback Source");
updateCombo(m_digitalOutCombo, "Digital Playback Source");
updateCombo(m_capture12Combo, "Ch1/2 Capture Source");
updateCombo(m_capture34Combo, "Ch3/4 Capture Source");
}
void MainWindow::updateCombo(QComboBox* combo, const std::string& controlName) {
long value = m_alsa.getControlValue(controlName);
combo->blockSignals(true);
combo->setCurrentIndex(static_cast<int>(value));
combo->blockSignals(false);
}
void MainWindow::onControlChanged(const std::string& controlName, int index, QComboBox* combo) {
m_alsa.setControlValue(controlName, index);
if (combo) {
QString originalStyle = combo->styleSheet();
combo->setStyleSheet(originalStyle + " QComboBox { border: 1px solid #A020F0; }");
QTimer::singleShot(200, [combo, originalStyle]() {
combo->setStyleSheet(originalStyle);
});
}
}
std::pair<QWidget*, QComboBox*> MainWindow::createControlWidget(const QString& labelText, const QStringList& items) {
auto *container = new QWidget();
auto *layout = new QVBoxLayout(container);
layout->setContentsMargins(0, 8, 0, 8);
layout->setSpacing(2);
auto *label = new QLabel(labelText);
label->setObjectName("ControlLabel");
auto *combo = new QComboBox();
combo->addItems(items);
layout->addWidget(label);
layout->addWidget(combo);
return {container, combo};
}
void MainWindow::showAboutDialog() {
if (m_aboutDialog && m_aboutDialog->isVisible()) {
m_aboutDialog->raise();
m_aboutDialog->activateWindow();
return;
}
if (!m_aboutDialog) {
m_aboutDialog = new QDialog(this);
m_aboutDialog->setWindowTitle("About TASCAM US-144MKII Control Panel");
m_aboutDialog->setWindowIcon(QIcon(":/tascam-control-panel.png"));
m_aboutDialog->setFixedSize(400, 250);
auto *layout = new QVBoxLayout(m_aboutDialog);
auto *textLabel = new QLabel(m_aboutDialog);
textLabel->setTextFormat(Qt::RichText);
textLabel->setOpenExternalLinks(true);
textLabel->setText(QString("<b>TASCAM US-144MKII Control Panel</b><br>"
"Copyright @serifpersia 2025<br><br>"
"This application provides a graphical interface to control the TASCAM US-144MKII audio interface on Linux. "
"It utilizes the 'us144mkii' ALSA driver.<br><br>"
"For more information, bug reports, and contributions, please visit the GitHub repository:<br>"
"<a href='https://github.com/serifpersia/us144mkii'>https://github.com/serifpersia/us144mkii</a>"));
textLabel->setWordWrap(true);
layout->addWidget(textLabel);
}
m_aboutDialog->show();
}
void MainWindow::paintEvent(QPaintEvent *event) {
QPainter painter(this);
if (!m_background.isNull()) {
painter.drawPixmap(this->rect(), m_background);
}
QWidget::paintEvent(event);
}
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