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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the test suite module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QAction>
#include <QApplication>
#include <QDebug>
#include <QGridLayout>
#include <QLabel>
#include <QMainWindow>
#include <QMenu>
#include <QMenuBar>
#include <QPalette>
#include <QPixmap>
#include <QPlainTextEdit>
#include <QStyle>
#include <QTabWidget>
#include <QTextStream>
#include <QVBoxLayout>
#include <QWindow>
#include <QScreen>
// Format enumeration value and strip off the class name
// added by QDebug: "QStyle::StandardPixmap(SP_Icon)" -> "SP_Icon".
template <typename Enum>
static inline QString formatEnumValue(Enum value)
{
QString result;
QDebug(&result) << value;
int index = result.indexOf(QLatin1Char('('));
if (index > 0) { // "QStyle::StandardPixmap(..)".
result.remove(0, index + 1);
index = result.lastIndexOf(QLatin1Char(')'));
if (index > 0)
result.truncate(index);
}
return result;
}
static QString pixmapDescription(QStyle::StandardPixmap sp, const QPixmap &pixmap)
{
QString description = formatEnumValue(sp);
QTextStream str(&description);
str << '(' << int(sp) << ") ";
if (pixmap.isNull()) {
str << "(null)";
} else {
const qreal dpr = pixmap.devicePixelRatioF();
str << ' ' << pixmap.width() << 'x' << pixmap.height();
if (!qFuzzyCompare(dpr, qreal(1)))
str << " DPR=" << dpr;
}
return description;
}
// Display pixmaps returned by QStyle::standardPixmap() in a grid.
static QWidget *createStandardPixmapPage(QWidget *parent)
{
QWidget *result = new QWidget(parent);
QGridLayout *grid = new QGridLayout(result);
int row = 0;
int column = 0;
const int maxColumns = 6;
for (int i = 0; i <= int(QStyle::SP_LineEditClearButton); ++i) {
const QStyle::StandardPixmap sp = static_cast<QStyle::StandardPixmap>(i);
QPixmap pixmap = result->style()->standardPixmap(sp, Q_NULLPTR, result);
QLabel *descriptionLabel = new QLabel(pixmapDescription(sp, pixmap));
grid->addWidget(descriptionLabel, row, column++);
QLabel *displayLabel = new QLabel;
displayLabel->setPixmap(pixmap);
displayLabel->setFrameShape(QFrame::Box);
grid->addWidget(displayLabel, row, column++);
if (column >= maxColumns) {
++row;
column = 0;
}
}
return result;
}
// Display values returned by QStyle::pixelMetric().
static QWidget *createMetricsPage(QWidget *parent)
{
QPlainTextEdit *result = new QPlainTextEdit(parent);
QString text;
QTextStream str(&text);
for (int i = 0; i <= int(QStyle::PM_HeaderDefaultSectionSizeVertical); ++i) {
const QStyle::PixelMetric m = static_cast<QStyle::PixelMetric>(i);
str << formatEnumValue(m) << '(' << int(m) << ")="
<< result->style()->pixelMetric(m, Q_NULLPTR, result) << '\n';
}
result->setPlainText(text);
return result;
}
// Display values returned by QStyle::styleHint()
static QWidget *createHintsPage(QWidget *parent)
{
QPlainTextEdit *result = new QPlainTextEdit(parent);
QString text;
QTextStream str(&text);
for (int i = 0; i <= int(QStyle::SH_Menu_SubMenuDontStartSloppyOnLeave); ++i) {
const QStyle::StyleHint h = static_cast<QStyle::StyleHint>(i);
str << formatEnumValue(h) << '(' << int(h) << ")="
<< result->style()->styleHint(h, Q_NULLPTR, result) << '\n';
}
result->setPlainText(text);
return result;
}
// Display palette colors
static QWidget *createColorsPage(QWidget *parent)
{
QWidget *result = new QWidget(parent);
QGridLayout *grid = new QGridLayout;
const QPalette palette = QGuiApplication::palette();
int row = 0;
for (int r = 0; r < int(QPalette::NColorRoles); ++r) {
const QPalette::ColorRole role = static_cast<QPalette::ColorRole>(r);
const QColor color = palette.color(QPalette::Active, role);
if (color.isValid()) {
const QString description =
formatEnumValue(role) + QLatin1Char('(') + QString::number(r)
+ QLatin1String(") ") + color.name(QColor::HexArgb);
grid->addWidget(new QLabel(description), row, 0);
QLabel *displayLabel = new QLabel;
QPixmap pixmap(20, 20);
pixmap.fill(color);
displayLabel->setPixmap(pixmap);
displayLabel->setFrameShape(QFrame::Box);
grid->addWidget(displayLabel, row, 1);
++row;
}
}
QHBoxLayout *hBox = new QHBoxLayout;
hBox->addLayout(grid);
hBox->addStretch();
QVBoxLayout *vBox = new QVBoxLayout(result);
vBox->addLayout(hBox);
vBox->addStretch();
return result;
}
class MainWindow : public QMainWindow {
Q_OBJECT
public:
MainWindow();
public slots:
void updateDescription();
private:
QTabWidget *m_tabWidget;
QLabel *m_descriptionLabel;
};
MainWindow::MainWindow()
: m_tabWidget(new QTabWidget)
, m_descriptionLabel(new QLabel)
{
QMenu *fileMenu = menuBar()->addMenu("&File");
QAction *a = fileMenu->addAction("Quit", this, &QWidget::close);
a->setShortcut(Qt::CTRL + Qt::Key_Q);
QWidget *central = new QWidget;
QVBoxLayout *mainLayout = new QVBoxLayout(central);
mainLayout->addWidget(m_descriptionLabel);
mainLayout->addWidget(m_tabWidget);
m_tabWidget->addTab(createStandardPixmapPage(m_tabWidget), "Standard Pixmaps");
m_tabWidget->addTab(createHintsPage(m_tabWidget), "Hints");
m_tabWidget->addTab(createMetricsPage(m_tabWidget), "Pixel Metrics");
m_tabWidget->addTab(createColorsPage(m_tabWidget), "Colors");
setCentralWidget(central);
setWindowTitle(QLatin1String("Style Tester (Qt") + QLatin1String(QT_VERSION_STR)
+ QLatin1String(", ") + style()->objectName() + QLatin1Char(')'));
}
void MainWindow::updateDescription()
{
QString text;
QTextStream str(&text);
str << "Qt " << QT_VERSION_STR << ", platform: " << QGuiApplication::platformName()
<< ", Style: \"" << style()->objectName() << "\", DPR=" << devicePixelRatioF()
<< ' ' << logicalDpiX() << ',' << logicalDpiY() << "DPI";
if (const QWindow *w = windowHandle())
str << ", Screen: \"" << w->screen()->name() << '"';
m_descriptionLabel->setText(text);
}
int main(int argc, char *argv[])
{
QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
QApplication app(argc, argv);
MainWindow mw;
mw.show();
mw.updateDescription();
QObject::connect(mw.windowHandle(), &QWindow::screenChanged,
&mw, &MainWindow::updateDescription);
return app.exec();
}
#include "main.moc"
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