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// Copyright (C) 2026 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QStyleKitStyle>
#include <QApplication>
#include <QButtonGroup>
#include <QCheckBox>
#include <QComboBox>
#include <QDial>
#include <QFormLayout>
#include <QGridLayout>
#include <QGroupBox>
#include <QHBoxLayout>
#include <QLineEdit>
#include <QMainWindow>
#include <QMenu>
#include <QMenuBar>
#include <QProgressBar>
#include <QPushButton>
#include <QRadioButton>
#include <QScrollArea>
#include <QSizePolicy>
#include <QSlider>
#include <QSpinBox>
#include <QVBoxLayout>
#include <QWidget>
#include <QIcon>
#include <QKeySequence>
#include <algorithm>
#include <array>
using namespace Qt::StringLiterals;
struct StylePreset
{
QLatin1StringView name;
QLatin1StringView path;
};
static constexpr std::array<StylePreset, 3> presets = {
StylePreset{ "Classic"_L1, ":/ClassicStyle.qml"_L1 },
StylePreset{ "Flat"_L1, ":/FlatStyle.qml"_L1 },
StylePreset{ "Neon"_L1, ":/NeonStyle.qml"_L1 },
};
class StyleControl : public QGroupBox
{
Q_OBJECT
public:
explicit StyleControl(QWidget *parent = nullptr);
private slots:
void stylePathComboActivated(int index);
void themeComboActivated(int);
private:
void refreshThemes();
void setStylePath(const QString &path);
QComboBox *m_themeCombo = new QComboBox();
QComboBox *m_stylePathCombo = new QComboBox();
QStyleKitStyle *m_style = qobject_cast<QStyleKitStyle *>(QApplication::style());
};
StyleControl::StyleControl(QWidget *parent) :
QGroupBox(tr("Settings"), parent)
{
setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
auto *settingsLayout = new QFormLayout(this);
for (const StylePreset &preset : presets)
m_stylePathCombo->addItem(preset.name, preset.path);
m_stylePathCombo->setCurrentIndex(0);
settingsLayout->addRow(tr("Style"), m_stylePathCombo);
settingsLayout->addRow(tr("Theme"), m_themeCombo);
if (m_style != nullptr)
refreshThemes();
else
setEnabled(false);
connect(m_stylePathCombo, &QComboBox::activated, this, &StyleControl::stylePathComboActivated);
connect(m_themeCombo, &QComboBox::activated, this, &StyleControl::themeComboActivated);
}
void StyleControl::refreshThemes()
{
const QStringList names = m_style->availableThemeNames();
const QString current = m_style->themeName();
const QSignalBlocker blocker(m_themeCombo);
m_themeCombo->clear();
m_themeCombo->addItems(names);
const int idx = m_themeCombo->findText(current);
if (idx >= 0)
m_themeCombo->setCurrentIndex(idx);
}
void StyleControl::setStylePath(const QString &path)
{
m_style->setStylePath(path);
refreshThemes();
}
void StyleControl::stylePathComboActivated(int index)
{
const QString data = m_stylePathCombo->itemData(index).toString();
setStylePath(data.isEmpty() ? m_stylePathCombo->itemText(index) : data);
}
void StyleControl::themeComboActivated(int)
{
m_style->setThemeName(m_themeCombo->currentText());
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow();
};
MainWindow::MainWindow()
{
menuBar()->setNativeMenuBar(false);
QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
fileMenu->addAction(QIcon::fromTheme(QIcon::ThemeIcon::ApplicationExit), tr("Quit"),
QKeySequence::Quit, this, &QWidget::close);
QMenu *helpMenu = menuBar()->addMenu(tr("&Help"));
helpMenu->addAction(QIcon::fromTheme(QIcon::ThemeIcon::HelpAbout), tr("About Qt"),
QKeySequence::HelpContents, this, QApplication::aboutQt);
auto *scrollArea = new QScrollArea();
scrollArea->setWidgetResizable(true);
scrollArea->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
auto *scrollWidget = new QWidget();
scrollArea->setWidget(scrollWidget);
auto *contentLayout = new QVBoxLayout(scrollWidget);
contentLayout->setAlignment(Qt::AlignTop);
// Buttons
auto *buttonsGroup = new QGroupBox(tr("Buttons"));
auto *buttonsLayout = new QHBoxLayout(buttonsGroup);
auto *normalButton = new QPushButton(tr("Normal"));
auto *checkableButton = new QPushButton(tr("Checkable"));
checkableButton->setCheckable(true);
auto *disabledButton = new QPushButton(tr("Disabled"));
disabledButton->setEnabled(false);
auto *flatButton = new QPushButton(tr("Flat"));
flatButton->setFlat(true);
buttonsLayout->addWidget(normalButton);
buttonsLayout->addWidget(checkableButton);
buttonsLayout->addWidget(disabledButton);
buttonsLayout->addWidget(flatButton);
buttonsLayout->addStretch();
contentLayout->addWidget(buttonsGroup);
// CheckBoxes and RadioButtons
auto *checkRadioGroup = new QGroupBox(tr("CheckBoxes and RadioButtons"));
auto *checkRadioLayout = new QGridLayout(checkRadioGroup);
checkRadioLayout->setColumnStretch(3, 1);
auto *checkBox1 = new QCheckBox(tr("Mango"));
checkBox1->setChecked(true);
auto *checkBox2 = new QCheckBox(tr("Avocado"));
auto *checkBox3 = new QCheckBox(tr("Banano"));
checkBox3->setChecked(true);
auto *radioButton1 = new QRadioButton(tr("Pasta"));
auto *radioButton2 = new QRadioButton(tr("Lasagna"));
radioButton2->setChecked(true);
auto *radioButton3 = new QRadioButton(tr("Burrita"));
auto *radioGroup = new QButtonGroup(scrollWidget);
radioGroup->addButton(radioButton1);
radioGroup->addButton(radioButton2);
radioGroup->addButton(radioButton3);
checkRadioLayout->addWidget(checkBox1, 0, 0);
checkRadioLayout->addWidget(checkBox2, 0, 1);
checkRadioLayout->addWidget(checkBox3, 0, 2);
checkRadioLayout->addWidget(radioButton1, 1, 0);
checkRadioLayout->addWidget(radioButton2, 1, 1);
checkRadioLayout->addWidget(radioButton3, 1, 2);
contentLayout->addWidget(checkRadioGroup);
// Text Inputs
auto *textInputsGroup = new QGroupBox(tr("Text Inputs"));
auto *textInputsLayout = new QHBoxLayout(textInputsGroup);
auto *lineEdit1 = new QLineEdit();
lineEdit1->setPlaceholderText(tr("Potato"));
auto *lineEdit2 = new QLineEdit();
lineEdit2->setPlaceholderText(tr("Tomato"));
textInputsLayout->addWidget(lineEdit1);
textInputsLayout->addWidget(lineEdit2);
contentLayout->addWidget(textInputsGroup);
// Misc
auto *miscGroup = new QGroupBox(tr("Misc"));
auto *miscLayout = new QHBoxLayout(miscGroup);
auto *spinBox = new QSpinBox();
spinBox->setRange(0, 100);
spinBox->setValue(42);
auto *comboBox = new QComboBox();
comboBox->addItems({ tr("One"), tr("February"), tr("Aramis"), tr("Winter"), tr("Friday") });
miscLayout->addWidget(spinBox);
miscLayout->addWidget(comboBox);
miscLayout->addStretch();
contentLayout->addWidget(miscGroup);
// Sliders and Dials
auto *slidersGroup = new QGroupBox(tr("Sliders and Dials"));
slidersGroup->setMinimumHeight(250);
auto *slidersLayout = new QHBoxLayout(slidersGroup);
auto *slider = new QSlider(Qt::Horizontal);
slider->setRange(0, 100);
slider->setValue(50);
auto *verticalSlider = new QSlider(Qt::Vertical);
verticalSlider->setRange(0, 100);
verticalSlider->setValue(30);
slidersLayout->addWidget(slider);
auto *dial = new QDial();
dial->setRange(0, 100);
dial->setValue(70);
slidersLayout->addWidget(verticalSlider);
slidersLayout->addWidget(dial, 0, Qt::AlignVCenter);
slidersLayout->addStretch();
contentLayout->addWidget(slidersGroup);
// Progress Bar
auto *progressGroup = new QGroupBox(tr("Progress Bar"));
auto *progressLayout = new QHBoxLayout(progressGroup);
auto *progressBar = new QProgressBar();
progressBar->setRange(0, 100);
progressBar->setValue(20);
progressLayout->addWidget(progressBar);
contentLayout->addWidget(progressGroup);
auto *centralWidget = new QWidget();
auto *centralLayout = new QHBoxLayout(centralWidget);
centralLayout->addWidget(scrollArea);
centralLayout->addWidget(new StyleControl(centralWidget));
setCentralWidget(centralWidget);
}
static bool isStyleOption(const char *option)
{
return qstrcmp(option, "-style") == 0;
}
int main(int argc, char *argv[])
{
const bool hasStyleOption = std::any_of(argv + 1, argv + argc, isStyleOption);
QApplication app(argc, argv);
auto *style = new QStyleKitStyle(presets[0].path);
if (!hasStyleOption)
QApplication::setStyle(style);
// --- Main window ---
MainWindow window;
window.setWindowTitle(MainWindow::tr("StyleKit Widgets Example"));
window.resize(800, 600);
window.show();
return QApplication::exec();
}
#include "main.moc"