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// Copyright (C) 2020 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
#include <QtQml/qqml.h>
#include <QtQuickControls2/private/qquickstyleplugin_p.h>
#include <QtGui/qguiapplication.h>
#include <QtGui/qpa/qplatformintegration.h>
#include <QtGui/private/qguiapplication_p.h>
#include <QtGui/qstylehints.h>
#include <QtQuickTemplates2/private/qquicktheme_p.h>
#include "qquicknativestyle.h"
#include "qquickcommonstyle.h"
#if defined(Q_OS_MACOS)
#include "qquickmacfocusframe.h"
#include "qquickmacstyle_mac_p.h"
#elif defined(Q_OS_WINDOWS)
#include "qquickwindowsfocusframe.h"
#include "qquickwindowsxpstyle_p.h"
#endif
QT_BEGIN_NAMESPACE
extern void qml_register_types_QtQuick_NativeStyle();
Q_GHS_KEEP_REFERENCE(qml_register_types_QtQuick_NativeStyle);
using namespace QQC2;
class QtQuickControls2NativeStylePlugin : public QQuickStylePlugin
{
Q_OBJECT
Q_PLUGIN_METADATA(IID QQmlExtensionInterface_iid)
public:
QtQuickControls2NativeStylePlugin(QObject *parent = nullptr);
~QtQuickControls2NativeStylePlugin() override;
void initializeEngine(QQmlEngine *engine, const char *uri) override;
void initializeTheme(QQuickTheme *theme) override;
QString name() const override;
#if defined(Q_OS_MACOS) || defined (Q_OS_WIN)
QScopedPointer<QQuickFocusFrame> m_focusFrame;
#endif
};
static void deleteQStyle()
{
// When we delete QStyle, it will free up it's own internal resources. Especially
// on macOS, this means releasing a lot of NSViews and NSCells from the QMacStyle
// destructor. If we did this from ~QtQuickControls2NativeStylePlugin, it would
// happen when the plugin was unloaded from a Q_DESTRUCTOR_FUNCTION in QLibrary,
// which is very late in the tear-down process, and after qGuiApp has been set to
// nullptr, NSApplication has stopped running, and perhaps also other static platform
// variables (e.g in AppKit?) has been deleted. And to our best guess, this is also why
// we see a crash in AppKit from the destructor in QMacStyle. So for this reason, we
// delete QStyle from a post routine rather than from the destructor.
QQuickNativeStyle::setStyle(nullptr);
}
QtQuickControls2NativeStylePlugin::QtQuickControls2NativeStylePlugin(QObject *parent):
QQuickStylePlugin(parent)
{
volatile auto registration = &qml_register_types_QtQuick_NativeStyle;
Q_UNUSED(registration);
}
QtQuickControls2NativeStylePlugin::~QtQuickControls2NativeStylePlugin()
{
if (!qGuiApp)
return;
// QGuiApplication is still running, so we need to remove the post
// routine to not be called after we have been unloaded.
qRemovePostRoutine(deleteQStyle);
QQuickNativeStyle::setStyle(nullptr);
}
QString QtQuickControls2NativeStylePlugin::name() const
{
return QStringLiteral("NativeStyle");
}
void QtQuickControls2NativeStylePlugin::initializeEngine(QQmlEngine *engine, const char *uri)
{
Q_UNUSED(engine);
Q_UNUSED(uri);
// Enable commonstyle as a reference style while
// the native styles are under development.
QStyle *style = nullptr;
if (qEnvironmentVariable("QQC2_COMMONSTYLE") == QStringLiteral("true")) {
style = new QCommonStyle;
} else {
const QString envStyle = qEnvironmentVariable("QQC2_STYLE");
if (!envStyle.isNull()) {
if (envStyle == QLatin1String("common"))
style = new QCommonStyle;
#if defined(Q_OS_MACOS)
else if (envStyle == QLatin1String("mac"))
style = new QMacStyle;
#endif
#if defined(Q_OS_WINDOWS)
else if (envStyle == QLatin1String("windows"))
style = new QWindowsStyle;
else if (envStyle == QLatin1String("windowsxp"))
style = new QWindowsXPStyle;
#endif
}
if (!style) {
#if defined(Q_OS_MACOS)
style = new QMacStyle;
#elif defined(Q_OS_WINDOWS)
style = new QWindowsXPStyle;
if (QGuiApplication::styleHints()->colorScheme() == Qt::ColorScheme::Dark)
qobject_cast<QWindowsStyle *>(style)->refreshPalette();
#else
style = new QCommonStyle;
#endif
}
}
#if defined(Q_OS_MACOS)
m_focusFrame.reset(new QQuickMacFocusFrame());
#elif defined(Q_OS_WIN)
m_focusFrame.reset(new QQuickWindowsFocusFrame());
#endif
qAddPostRoutine(deleteQStyle);
QQuickNativeStyle::setStyle(style);
}
void QtQuickControls2NativeStylePlugin::initializeTheme(QQuickTheme * /*theme*/)
{
}
QT_END_NAMESPACE
#include "qtquickcontrols2nativestyleplugin.moc"
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