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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:significant reason:default
#include "qxdgdesktopportaltheme.h"
#include "qxdgdesktopportalfiledialog_p.h"
#include <private/qguiapplication_p.h>
#include <qpa/qplatformtheme_p.h>
#include <qpa/qplatformthemefactory_p.h>
#include <qpa/qplatformintegration.h>
#include <QDBusConnection>
#include <QDBusMessage>
#include <QDBusPendingCall>
#include <QDBusPendingCallWatcher>
#include <QDBusPendingReply>
#include <QDBusReply>
QT_BEGIN_NAMESPACE
using namespace Qt::StringLiterals;
static constexpr QLatin1StringView appearanceInterface("org.freedesktop.appearance");
static constexpr QLatin1StringView colorSchemeKey("color-scheme");
static constexpr QLatin1StringView contrastKey("contrast");
static constexpr QLatin1StringView motionKey("reduced-motion");
class QXdgDesktopPortalThemePrivate : public QObject
{
Q_OBJECT
public:
enum XdgColorschemePref {
None,
PreferDark,
PreferLight
};
QXdgDesktopPortalThemePrivate()
: QObject()
{ }
~QXdgDesktopPortalThemePrivate()
{
delete baseTheme;
}
/*! \internal
Converts the given Freedesktop color scheme setting \a colorschemePref to a Qt::ColorScheme value.
Unfortunately the enum numerical values are not defined identically, so we have to convert them.
The mapping is as follows:
Enum Index: Freedesktop definition | Qt definition
----------------------------------- | -------------
0: No preference | 0: Unknown
1: Prefer dark appearance | 2: Dark
2: Prefer light appearance | 1: Light
*/
static Qt::ColorScheme colorSchemeFromXdgPref(const XdgColorschemePref colorschemePref)
{
switch (colorschemePref) {
case PreferDark: return Qt::ColorScheme::Dark;
case PreferLight: return Qt::ColorScheme::Light;
default: return Qt::ColorScheme::Unknown;
}
}
public Q_SLOTS:
void settingChanged(const QString &group, const QString &key,
const QDBusVariant &value)
{
if (group == appearanceInterface) {
if (key == colorSchemeKey) {
colorScheme = colorSchemeFromXdgPref(static_cast<XdgColorschemePref>(value.variant().toUInt()));
QWindowSystemInterface::handleThemeChange();
} else if (key == contrastKey) {
contrast = static_cast<Qt::ContrastPreference>(value.variant().toUInt());
QWindowSystemInterface::handleThemeChange();
} else if (key == motionKey) {
motion = static_cast<Qt::MotionPreference>(value.variant().toUInt());
QWindowSystemInterface::handleThemeChange();
}
}
}
public:
QPlatformTheme *baseTheme = nullptr;
uint fileChooserPortalVersion = 0;
Qt::ColorScheme colorScheme = Qt::ColorScheme::Unknown;
Qt::ContrastPreference contrast = Qt::ContrastPreference::NoPreference;
Qt::MotionPreference motion = Qt::MotionPreference::NoPreference;
};
QXdgDesktopPortalTheme::QXdgDesktopPortalTheme()
: d_ptr(new QXdgDesktopPortalThemePrivate)
{
Q_D(QXdgDesktopPortalTheme);
const QStringList themeNames = QGuiApplicationPrivate::platform_integration->themeNames();
for (const QString &themeName : themeNames) {
if (QXdgDesktopPortalTheme::isXdgPlugin(themeName))
continue;
// 1) Look for a theme plugin.
d->baseTheme = QPlatformThemeFactory::create(themeName, nullptr);
if (d->baseTheme)
break;
// 2) If no theme plugin was found ask the platform integration to create a theme
d->baseTheme = QGuiApplicationPrivate::platform_integration->createPlatformTheme(themeName);
if (d->baseTheme)
break;
}
// 3) Fall back on the built-in "null" platform theme.
if (!d->baseTheme)
d->baseTheme = new QPlatformTheme;
// Get information about portal version
QDBusMessage message = QDBusMessage::createMethodCall("org.freedesktop.portal.Desktop"_L1,
"/org/freedesktop/portal/desktop"_L1,
"org.freedesktop.DBus.Properties"_L1,
"Get"_L1);
message << "org.freedesktop.portal.FileChooser"_L1 << "version"_L1;
QDBusPendingCall pendingCall = QDBusConnection::sessionBus().asyncCall(message);
QDBusPendingCallWatcher *watcher = new QDBusPendingCallWatcher(pendingCall);
QObject::connect(watcher, &QDBusPendingCallWatcher::finished, watcher, [d] (QDBusPendingCallWatcher *watcher) {
QDBusPendingReply<QVariant> reply = *watcher;
if (reply.isValid()) {
d->fileChooserPortalVersion = reply.value().toUInt();
} else {
qWarning() << "Call for getting org.freedesktop.portal.FileChooser version failed"
<< reply.error();
}
watcher->deleteLater();
});
// Get information about system theme preference
message = QDBusMessage::createMethodCall("org.freedesktop.portal.Desktop"_L1,
"/org/freedesktop/portal/desktop"_L1,
"org.freedesktop.portal.Settings"_L1,
"ReadAll"_L1);
QStringList namespaces = { appearanceInterface };
message << namespaces;
// this must not be asyncCall() because we have to set appearance now
QDBusReply<QMap<QString, QVariantMap>> reply = QDBusConnection::sessionBus().call(message);
if (reply.isValid()) {
const QMap<QString, QVariantMap> settingsMap = reply.value();
if (!settingsMap.isEmpty()) {
const auto xdgColorSchemePref = static_cast<QXdgDesktopPortalThemePrivate::XdgColorschemePref>(settingsMap.value(appearanceInterface).value(colorSchemeKey).toUInt());
d->colorScheme = QXdgDesktopPortalThemePrivate::colorSchemeFromXdgPref(xdgColorSchemePref);
d->contrast = static_cast<Qt::ContrastPreference>(settingsMap.value(appearanceInterface).value(contrastKey).toUInt());
d->motion = static_cast<Qt::MotionPreference>(settingsMap.value(appearanceInterface).value(motionKey).toUInt());
}
} else {
qWarning() << "Call to org.freedesktop.portal.Settings.ReadAll failed" << reply.error();
}
QDBusConnection::sessionBus().connect(
"org.freedesktop.portal.Desktop"_L1, "/org/freedesktop/portal/desktop"_L1,
"org.freedesktop.portal.Settings"_L1, "SettingChanged"_L1, d_ptr.get(),
SLOT(settingChanged(QString,QString,QDBusVariant)));
}
QPlatformMenuItem* QXdgDesktopPortalTheme::createPlatformMenuItem() const
{
Q_D(const QXdgDesktopPortalTheme);
return d->baseTheme->createPlatformMenuItem();
}
QPlatformMenu* QXdgDesktopPortalTheme::createPlatformMenu() const
{
Q_D(const QXdgDesktopPortalTheme);
return d->baseTheme->createPlatformMenu();
}
QPlatformMenuBar* QXdgDesktopPortalTheme::createPlatformMenuBar() const
{
Q_D(const QXdgDesktopPortalTheme);
return d->baseTheme->createPlatformMenuBar();
}
void QXdgDesktopPortalTheme::showPlatformMenuBar()
{
Q_D(const QXdgDesktopPortalTheme);
return d->baseTheme->showPlatformMenuBar();
}
bool QXdgDesktopPortalTheme::usePlatformNativeDialog(DialogType type) const
{
Q_D(const QXdgDesktopPortalTheme);
if (type == FileDialog)
return true;
return d->baseTheme->usePlatformNativeDialog(type);
}
QPlatformDialogHelper* QXdgDesktopPortalTheme::createPlatformDialogHelper(DialogType type) const
{
Q_D(const QXdgDesktopPortalTheme);
if (type == FileDialog && d->fileChooserPortalVersion) {
// Older versions of FileChooser portal don't support opening directories, therefore we fallback
// to native file dialog opened inside the sandbox to open a directory.
if (d->baseTheme->usePlatformNativeDialog(type))
return new QXdgDesktopPortalFileDialog(static_cast<QPlatformFileDialogHelper*>(d->baseTheme->createPlatformDialogHelper(type)),
d->fileChooserPortalVersion);
return new QXdgDesktopPortalFileDialog;
}
return d->baseTheme->createPlatformDialogHelper(type);
}
#ifndef QT_NO_SYSTEMTRAYICON
QPlatformSystemTrayIcon* QXdgDesktopPortalTheme::createPlatformSystemTrayIcon() const
{
Q_D(const QXdgDesktopPortalTheme);
return d->baseTheme->createPlatformSystemTrayIcon();
}
#endif
const QPalette *QXdgDesktopPortalTheme::palette(Palette type) const
{
Q_D(const QXdgDesktopPortalTheme);
return d->baseTheme->palette(type);
}
const QFont* QXdgDesktopPortalTheme::font(Font type) const
{
Q_D(const QXdgDesktopPortalTheme);
return d->baseTheme->font(type);
}
QVariant QXdgDesktopPortalTheme::themeHint(ThemeHint hint) const
{
Q_D(const QXdgDesktopPortalTheme);
return d->baseTheme->themeHint(hint);
}
Qt::ColorScheme QXdgDesktopPortalTheme::colorScheme() const
{
Q_D(const QXdgDesktopPortalTheme);
if (d->colorScheme == Qt::ColorScheme::Unknown)
return d->baseTheme->colorScheme();
return d->colorScheme;
}
Qt::ContrastPreference QXdgDesktopPortalTheme::contrastPreference() const
{
Q_D(const QXdgDesktopPortalTheme);
return d->contrast;
}
Qt::MotionPreference QXdgDesktopPortalTheme::motionPreference() const
{
Q_D(const QXdgDesktopPortalTheme);
return d->motion;
}
QPixmap QXdgDesktopPortalTheme::standardPixmap(StandardPixmap sp, const QSizeF &size) const
{
Q_D(const QXdgDesktopPortalTheme);
return d->baseTheme->standardPixmap(sp, size);
}
QIcon QXdgDesktopPortalTheme::fileIcon(const QFileInfo &fileInfo,
QPlatformTheme::IconOptions iconOptions) const
{
Q_D(const QXdgDesktopPortalTheme);
return d->baseTheme->fileIcon(fileInfo, iconOptions);
}
QIconEngine * QXdgDesktopPortalTheme::createIconEngine(const QString &iconName) const
{
Q_D(const QXdgDesktopPortalTheme);
return d->baseTheme->createIconEngine(iconName);
}
#if QT_CONFIG(shortcut)
QList<QKeySequence> QXdgDesktopPortalTheme::keyBindings(QKeySequence::StandardKey key) const
{
Q_D(const QXdgDesktopPortalTheme);
return d->baseTheme->keyBindings(key);
}
#endif
QString QXdgDesktopPortalTheme::standardButtonText(int button) const
{
Q_D(const QXdgDesktopPortalTheme);
return d->baseTheme->standardButtonText(button);
}
bool QXdgDesktopPortalTheme::isXdgPlugin(const QString &key)
{
return key.compare("xdgdesktopportal"_L1, Qt::CaseInsensitive) == 0 ||
key.compare("flatpak"_L1, Qt::CaseInsensitive) == 0 ||
key.compare("snap"_L1, Qt::CaseInsensitive) == 0;
}
QT_END_NAMESPACE
#include "qxdgdesktopportaltheme.moc"