diff options
Diffstat (limited to 'src/gui/kernel/qguivariant.cpp')
| -rw-r--r-- | src/gui/kernel/qguivariant.cpp | 341 |
1 files changed, 64 insertions, 277 deletions
diff --git a/src/gui/kernel/qguivariant.cpp b/src/gui/kernel/qguivariant.cpp index 565e91d662..fe72e7782f 100644 --- a/src/gui/kernel/qguivariant.cpp +++ b/src/gui/kernel/qguivariant.cpp @@ -1,41 +1,5 @@ -/**************************************************************************** -** -** Copyright (C) 2020 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtGui module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** 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 https://www.qt.io/terms-conditions. For further -** information use the contact form at https://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.LGPL3 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-3.0.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 (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// 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 // Gui types #include "qbitmap.h" @@ -86,272 +50,95 @@ #include <float.h> -#include "private/qvariant_p.h" #include <private/qmetatype_p.h> QT_BEGIN_NAMESPACE -Q_CORE_EXPORT const QVariant::Handler *qcoreVariantHandler(); - namespace { -struct GuiTypesFilter { - template<typename T> - struct Acceptor { - static const bool IsAccepted = QModulesPrivate::QTypeModuleInfo<T>::IsGui && QtMetaTypePrivate::TypeDefinition<T>::IsAvailable; - }; -}; -// This class is a hack that customizes access to QPolygon and QPolygonF -template<class Filter> -class QGuiVariantIsNull : public QVariantIsNull<Filter> { - typedef QVariantIsNull<Filter> Base; -public: - QGuiVariantIsNull(const QVariant::Private *d) - : QVariantIsNull<Filter>(d) - {} - template<typename T> - bool delegate(const T *p) { return Base::delegate(p); } - bool delegate(const QPolygon*) { return v_cast<QPolygon>(Base::m_d)->isEmpty(); } - bool delegate(const QPolygonF*) { return v_cast<QPolygonF>(Base::m_d)->isEmpty(); } - bool delegate(const void *p) { return Base::delegate(p); } -}; -static bool isNull(const QVariant::Private *d) +// NOLINTNEXTLINE(cppcoreguidelines-virtual-class-destructor): this is not a base class +static constexpr struct : QMetaTypeModuleHelper { - QGuiVariantIsNull<GuiTypesFilter> isNull(d); - return QMetaTypeSwitcher::switcher<bool>(isNull, d->type().id(), nullptr); -} +#define QT_IMPL_METATYPEINTERFACE_GUI_TYPES(MetaTypeName, MetaTypeId, RealName) \ + QT_METATYPE_INTERFACE_INIT(RealName), -// This class is a hack that customizes access to QPixmap, QBitmap, QCursor and QIcon -template<class Filter> -class QGuiVariantComparator : public QVariantComparator<Filter> { - typedef QVariantComparator<Filter> Base; -public: - QGuiVariantComparator(const QVariant::Private *a, const QVariant::Private *b) - : QVariantComparator<Filter>(a, b) - {} - template<typename T> - bool delegate(const T *p) - { - return Base::delegate(p); - } - bool delegate(const QPixmap*) - { - return v_cast<QPixmap>(Base::m_a)->cacheKey() == v_cast<QPixmap>(Base::m_b)->cacheKey(); - } - bool delegate(const QBitmap*) - { - return v_cast<QBitmap>(Base::m_a)->cacheKey() == v_cast<QBitmap>(Base::m_b)->cacheKey(); - } -#ifndef QT_NO_CURSOR - bool delegate(const QCursor*) - { - return v_cast<QCursor>(Base::m_a)->shape() == v_cast<QCursor>(Base::m_b)->shape(); - } -#endif -#ifndef QT_NO_ICON - bool delegate(const QIcon *) - { - return v_cast<QIcon>(Base::m_a)->cacheKey() == v_cast<QIcon>(Base::m_b)->cacheKey(); + const QtPrivate::QMetaTypeInterface *interfaceForType(int type) const override { + switch (type) { + QT_FOR_EACH_STATIC_GUI_CLASS(QT_METATYPE_CONVERT_ID_TO_TYPE) + default: return nullptr; + } } -#endif - bool delegate(const void *p) { return Base::delegate(p); } -}; - -static bool compare(const QVariant::Private *a, const QVariant::Private *b) -{ - QGuiVariantComparator<GuiTypesFilter> comparator(a, b); - return QMetaTypeSwitcher::switcher<bool>(comparator, a->type().id(), nullptr); -} +#undef QT_IMPL_METATYPEINTERFACE_GUI_TYPES -static bool convert(const QVariant::Private *d, int t, - void *result, bool *ok) -{ - switch (t) { - case QMetaType::QByteArray: - if (d->type().id() == QMetaType::QColor) { - const QColor *c = v_cast<QColor>(d); - *static_cast<QByteArray *>(result) = c->name(c->alpha() != 255 ? QColor::HexArgb : QColor::HexRgb).toLatin1(); - return true; - } - break; - case QMetaType::QString: { - QString *str = static_cast<QString *>(result); - switch (d->type().id()) { + bool convert(const void *from, int fromTypeId, void *to, int toTypeId) const override + { + Q_ASSERT(fromTypeId != toTypeId); + + bool onlyCheck = (from == nullptr && to == nullptr); + // either two nullptrs from canConvert, or two valid pointers + Q_ASSERT(onlyCheck || (bool(from) && bool(to))); + + using Int = int; + switch (makePair(toTypeId, fromTypeId)) { + QMETATYPE_CONVERTER(QByteArray, QColor, + result = source.name(source.alpha() != 255 ? + QColor::HexArgb : QColor::HexRgb).toLatin1(); + return true; + ); + QMETATYPE_CONVERTER(QColor, QByteArray, + result = QColor::fromString(QLatin1StringView(source)); + return result.isValid(); + ); + QMETATYPE_CONVERTER(QString, QColor, + result = source.name(source.alpha() != 255 ? + QColor::HexArgb : QColor::HexRgb); + return true; + ); + QMETATYPE_CONVERTER(QColor, QString, + result = QColor::fromString(source); + return result.isValid(); + ); #if QT_CONFIG(shortcut) - case QMetaType::QKeySequence: - *str = (*v_cast<QKeySequence>(d)).toString(QKeySequence::NativeText); - return true; -#endif - case QMetaType::QFont: - *str = v_cast<QFont>(d)->toString(); - return true; - case QMetaType::QColor: { - const QColor *c = v_cast<QColor>(d); - *str = c->name(c->alpha() != 255 ? QColor::HexArgb : QColor::HexRgb); - return true; - } - default: - break; - } - break; - } - case QMetaType::QPixmap: - if (d->type().id() == QMetaType::QImage) { - *static_cast<QPixmap *>(result) = QPixmap::fromImage(*v_cast<QImage>(d)); - return true; - } else if (d->type().id() == QMetaType::QBitmap) { - *static_cast<QPixmap *>(result) = *v_cast<QBitmap>(d); - return true; - } else if (d->type().id() == QMetaType::QBrush) { - if (v_cast<QBrush>(d)->style() == Qt::TexturePattern) { - *static_cast<QPixmap *>(result) = v_cast<QBrush>(d)->texture(); - return true; - } - } - break; - case QMetaType::QImage: - if (d->type().id() == QMetaType::QPixmap) { - *static_cast<QImage *>(result) = v_cast<QPixmap>(d)->toImage(); - return true; - } else if (d->type().id() == QMetaType::QBitmap) { - *static_cast<QImage *>(result) = v_cast<QBitmap>(d)->toImage(); - return true; - } - break; - case QMetaType::QBitmap: - if (d->type().id() == QMetaType::QPixmap) { - *static_cast<QBitmap *>(result) = *v_cast<QPixmap>(d); - return true; - } else if (d->type().id() == QMetaType::QImage) { - *static_cast<QBitmap *>(result) = QBitmap::fromImage(*v_cast<QImage>(d)); + QMETATYPE_CONVERTER(QString, QKeySequence, + result = source.toString(QKeySequence::NativeText); return true; - } - break; -#if QT_CONFIG(shortcut) - case QMetaType::Int: - if (d->type().id() == QMetaType::QKeySequence) { - const QKeySequence &seq = *v_cast<QKeySequence>(d); - *static_cast<int *>(result) = seq.isEmpty() ? 0 : seq[0]; + ); + QMETATYPE_CONVERTER(QKeySequence, QString, result = source; return true;); + QMETATYPE_CONVERTER(Int, QKeySequence, + result = source.isEmpty() ? 0 : source[0].toCombined(); return true; - } - break; + ); + QMETATYPE_CONVERTER(QKeySequence, Int, result = source; return true;); #endif - case QMetaType::QFont: - if (d->type().id() == QMetaType::QString) { - QFont *f = static_cast<QFont *>(result); - f->fromString(*v_cast<QString>(d)); - return true; - } - break; - case QMetaType::QColor: - if (d->type().id() == QMetaType::QString) { - static_cast<QColor *>(result)->setNamedColor(*v_cast<QString>(d)); - return static_cast<QColor *>(result)->isValid(); - } else if (d->type().id() == QMetaType::QByteArray) { - static_cast<QColor *>(result)->setNamedColor(QLatin1String(*v_cast<QByteArray>(d))); - return true; - } else if (d->type().id() == QMetaType::QBrush) { - if (v_cast<QBrush>(d)->style() == Qt::SolidPattern) { - *static_cast<QColor *>(result) = v_cast<QBrush>(d)->color(); + QMETATYPE_CONVERTER(QString, QFont, result = source.toString(); return true;); + QMETATYPE_CONVERTER(QFont, QString, return result.fromString(source);); + QMETATYPE_CONVERTER(QPixmap, QImage, result = QPixmap::fromImage(source); return true;); + QMETATYPE_CONVERTER(QImage, QPixmap, result = source.toImage(); return true;); + QMETATYPE_CONVERTER(QPixmap, QBitmap, result = source; return true;); + QMETATYPE_CONVERTER(QBitmap, QPixmap, result = QBitmap::fromPixmap(source); return true;); + QMETATYPE_CONVERTER(QImage, QBitmap, result = source.toImage(); return true;); + QMETATYPE_CONVERTER(QBitmap, QImage, result = QBitmap::fromImage(source); return true;); + QMETATYPE_CONVERTER(QPixmap, QBrush, result = source.texture(); return true;); + QMETATYPE_CONVERTER(QBrush, QPixmap, result = source; return true;); + QMETATYPE_CONVERTER(QColor, QBrush, + if (source.style() == Qt::SolidPattern) { + result = source.color(); return true; } - } - break; - case QMetaType::QBrush: - if (d->type().id() == QMetaType::QColor) { - *static_cast<QBrush *>(result) = QBrush(*v_cast<QColor>(d)); - return true; - } else if (d->type().id() == QMetaType::QPixmap) { - *static_cast<QBrush *>(result) = QBrush(*v_cast<QPixmap>(d)); - return true; - } - break; -#if QT_CONFIG(shortcut) - case QMetaType::QKeySequence: { - QKeySequence *seq = static_cast<QKeySequence *>(result); - switch (d->type().id()) { - case QMetaType::QString: - *seq = QKeySequence(*v_cast<QString>(d)); - return true; - case QMetaType::Int: - *seq = QKeySequence(d->data.i); - return true; + return false; + ); + QMETATYPE_CONVERTER(QBrush, QColor, result = source; return true;); default: break; } - break; - } -#endif -#ifndef QT_NO_ICON - case QMetaType::QIcon: { - if (ok) - *ok = false; return false; } -#endif - default: - break; - } - return qcoreVariantHandler()->convert(d, t, result, ok); -} - -#if !defined(QT_NO_DEBUG_STREAM) -static void streamDebug(QDebug dbg, const QVariant &v) -{ - QVariant::Private *d = const_cast<QVariant::Private *>(&v.data_ptr()); - QVariantDebugStream<GuiTypesFilter> stream(dbg, d); - QMetaTypeSwitcher::switcher<void>(stream, d->type().id(), nullptr); -} -#endif - -const QVariant::Handler qt_gui_variant_handler = { - isNull, - compare, - convert, -#if !defined(QT_NO_DEBUG_STREAM) - streamDebug -#else - nullptr -#endif -}; - -#define QT_IMPL_METATYPEINTERFACE_GUI_TYPES(MetaTypeName, MetaTypeId, RealName) \ - QT_METATYPE_INTERFACE_INIT(RealName), - -static const struct : QMetaTypeModuleHelper -{ - QtPrivate::QMetaTypeInterface *interfaceForType(int type) const override { - switch (type) { - QT_FOR_EACH_STATIC_GUI_CLASS(QT_METATYPE_CONVERT_ID_TO_TYPE) - default: return nullptr; - } - } -#ifndef QT_NO_DATASTREAM - bool save(QDataStream &stream, int type, const void *data) const override { - switch (type) { - QT_FOR_EACH_STATIC_GUI_CLASS(QT_METATYPE_DATASTREAM_SAVE) - default: return false; - } - } - bool load(QDataStream &stream, int type, void *data) const override { - switch (type) { - QT_FOR_EACH_STATIC_GUI_CLASS(QT_METATYPE_DATASTREAM_LOAD) - default: return false; - } - } -#endif - } qVariantGuiHelper; - -#undef QT_IMPL_METATYPEINTERFACE_GUI_TYPES } // namespace used to hide QVariant handler -extern Q_CORE_EXPORT const QMetaTypeModuleHelper *qMetaTypeGuiHelper; - void qRegisterGuiVariant() { - QVariantPrivate::registerHandler(QModulesPrivate::Gui, &qt_gui_variant_handler); qMetaTypeGuiHelper = &qVariantGuiHelper; } Q_CONSTRUCTOR_FUNCTION(qRegisterGuiVariant) |