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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Quick Controls 2 module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** 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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/qloggingcategory.h>
#include <QtQml/qqmlengine.h>
#include <QtQml/qqmlextensionplugin.h>
#include <QtQuickTemplates2/private/qquicktheme_p_p.h>
#include <QtQuickControls2/private/qquickstyle_p.h>
#include <QtQuickControls2/private/qquickstyleplugin_p.h>
#include <QtQuickControls2/qquickstyle.h>
#include <QtQuickControls2/qtquickcontrols2global.h>
QT_BEGIN_NAMESPACE
Q_LOGGING_CATEGORY(lcQtQuickControls2Plugin, "qt.quick.controls.qtquickcontrols2plugin")
class QtQuickControls2Plugin : public QQmlExtensionPlugin
{
Q_OBJECT
Q_PLUGIN_METADATA(IID QQmlExtensionInterface_iid)
public:
QtQuickControls2Plugin(QObject *parent = nullptr);
~QtQuickControls2Plugin();
void registerTypes(const char *uri) override;
void unregisterTypes() override;
private:
// We store these because the style plugins can be unregistered before
// QtQuickControls2Plugin, and since QQuickStylePlugin calls QQuickStylePrivate::reset(),
// the style information can be lost when it comes time to call qmlUnregisterModuleImport().
// It also avoids unnecessarily resolving the style after resetting it just to get the style
// name in unregisterTypes().
bool customStyle = false;
QString registeredStyleUri;
QString registeredFallbackStyleUri;
};
static const char *qtQuickControlsUri = "QtQuick.Controls";
QString styleUri()
{
const QString style = QQuickStyle::name();
if (!QQuickStylePrivate::isCustomStyle()) {
// The style set is a built-in style.
const QString styleName = QQuickStylePrivate::effectiveStyleName(style);
return QString::fromLatin1("QtQuick.Controls.%1").arg(styleName);
}
// This is a custom style, so just use the name as the import uri.
QString styleName = style;
if (styleName.startsWith(QLatin1String(":/")))
styleName.remove(0, 2);
return styleName;
}
QString fallbackStyleUri()
{
// The fallback style must be a built-in style, so we don't need to check for custom styles here.
const QString fallbackStyle = QQuickStylePrivate::fallbackStyle();
const QString fallbackStyleName = QQuickStylePrivate::effectiveStyleName(fallbackStyle);
return QString::fromLatin1("QtQuick.Controls.%1").arg(fallbackStyleName);
}
QtQuickControls2Plugin::QtQuickControls2Plugin(QObject *parent) : QQmlExtensionPlugin(parent)
{
volatile auto registration = &qml_register_types_QtQuick_Controls;
Q_UNUSED(registration);
}
QtQuickControls2Plugin::~QtQuickControls2Plugin()
{
// Intentionally empty: we use register/unregisterTypes() to do
// initialization and cleanup, as plugins are not unloaded on macOS.
}
void QtQuickControls2Plugin::registerTypes(const char *uri)
{
qCDebug(lcQtQuickControls2Plugin) << "registerTypes() called with uri" << uri;
// It's OK that the style is resolved more than once; some accessors like name() cause it to be called, for example.
QQuickStylePrivate::init();
const QString styleName = QQuickStylePrivate::effectiveStyleName(QQuickStyle::name());
const QString fallbackStyleName = QQuickStylePrivate::effectiveStyleName(QQuickStylePrivate::fallbackStyle());
qCDebug(lcQtQuickControls2Plugin) << "style:" << QQuickStyle::name() << "effective style:" << styleName
<< "fallback style:" << QQuickStylePrivate::fallbackStyle() << "effective fallback style:" << fallbackStyleName;
// If the style is Basic, we don't need to register the fallback because the Basic style
// provides all controls. Also, if we didn't return early here, we can get an infinite import loop
// when the style is set to Basic.
if (styleName != fallbackStyleName && styleName != QLatin1String("Basic")) {
registeredFallbackStyleUri = ::fallbackStyleUri();
qCDebug(lcQtQuickControls2Plugin) << "calling qmlRegisterModuleImport() to register fallback style with"
<< " uri \"" << qtQuickControlsUri << "\" moduleMajor" << QQmlModuleImportModuleAny
<< "import" << registeredFallbackStyleUri << "importMajor" << QQmlModuleImportAuto;
// The fallback style must be a built-in style, so we match the version number.
qmlRegisterModuleImport(qtQuickControlsUri, QQmlModuleImportModuleAny, registeredFallbackStyleUri.toUtf8().constData(),
QQmlModuleImportAuto, QQmlModuleImportAuto);
}
// If the user imports QtQuick.Controls 2.15, and they're using the Material style, we should import version 2.15.
// However, if they import QtQuick.Controls 2.15, but are using a custom style, we want to use the latest version
// number of their style.
customStyle = QQuickStylePrivate::isCustomStyle();
registeredStyleUri = ::styleUri();
const int importMajor = !customStyle ? QQmlModuleImportAuto : QQmlModuleImportLatest;
qCDebug(lcQtQuickControls2Plugin).nospace() << "calling qmlRegisterModuleImport() to register primary style with"
<< " uri \"" << qtQuickControlsUri << "\" moduleMajor " << importMajor
<< " import " << registeredStyleUri << " importMajor " << importMajor;
qmlRegisterModuleImport(qtQuickControlsUri, QQmlModuleImportModuleAny, registeredStyleUri.toUtf8().constData(), importMajor);
}
void QtQuickControls2Plugin::unregisterTypes()
{
qCDebug(lcQtQuickControls2Plugin) << "unregisterTypes() called";
if (!registeredFallbackStyleUri.isEmpty()) {
// We registered a fallback style, so now we need to unregister it.
qmlUnregisterModuleImport(qtQuickControlsUri, QQmlModuleImportModuleAny, registeredFallbackStyleUri.toUtf8().constData(),
QQmlModuleImportAuto, QQmlModuleImportAuto);
registeredFallbackStyleUri.clear();
}
const int importMajor = !customStyle ? QQmlModuleImportAuto : QQmlModuleImportLatest;
qmlUnregisterModuleImport(qtQuickControlsUri, QQmlModuleImportModuleAny, registeredStyleUri.toUtf8().constData(), importMajor);
customStyle = false;
registeredStyleUri.clear();
}
QT_END_NAMESPACE
#include "qtquickcontrols2plugin.moc"
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