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Diffstat (limited to 'src/quicknativestyle/qtquickcontrols2nativestyleplugin.cpp')
| -rw-r--r-- | src/quicknativestyle/qtquickcontrols2nativestyleplugin.cpp | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/src/quicknativestyle/qtquickcontrols2nativestyleplugin.cpp b/src/quicknativestyle/qtquickcontrols2nativestyleplugin.cpp new file mode 100644 index 00000000..7b638704 --- /dev/null +++ b/src/quicknativestyle/qtquickcontrols2nativestyleplugin.cpp @@ -0,0 +1,164 @@ +/**************************************************************************** +** +** Copyright (C) 2020 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 <QtQml/qqml.h> +#include <QtQuickControls2/private/qquickstyleplugin_p.h> +#include <QtGui/qguiapplication.h> + +#include <QtQuickTemplates2/private/qquicktheme_p.h> + +#include "qquicknativestyle.h" +#include "qquickcommonstyle.h" + +#if defined(Q_OS_MACOS) +#include "qquickmacstyle_mac_p.h" +#include "qquickmacfocusframe.h" +#elif defined(Q_OS_WINDOWS) +# include "qquickwindowsxpstyle_p.h" +#endif + +extern void qml_register_types_QtQuick_NativeStyle(); + +QT_BEGIN_NAMESPACE + +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) + QScopedPointer<QQuickMacFocusFrame> 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; +#else + style = new QCommonStyle; +#endif + } + } + +#if defined(Q_OS_MACOS) + m_focusFrame.reset(new QQuickMacFocusFrame()); +#endif + + qAddPostRoutine(deleteQStyle); + QQuickNativeStyle::setStyle(style); +} + +void QtQuickControls2NativeStylePlugin::initializeTheme(QQuickTheme */*theme*/) +{ +} + +QT_END_NAMESPACE + +#include "qtquickcontrols2nativestyleplugin.moc" |