1697fbdf05
And remove one of the type id to name mapping that still existed in QMetaType. QMetaTypeInterface can provide that, so there's no need to have a second copy of the data. qMetaTypeTypeInternal() can still map all the names of all builtin types to ids. That functionality is for now still required by moc and can't be removed yet. Change-Id: Ib4f8e9c71e1e7d99d52da9e44477c9a1f1805e57 Reviewed-by: Lars Knoll <lars.knoll@qt.io>
425 lines
14 KiB
C++
425 lines
14 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "variantdelegate.h"
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#include <QCheckBox>
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#include <QDateTime>
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#include <QLineEdit>
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#include <QSpinBox>
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#include <QRegularExpressionValidator>
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#include <QTextStream>
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#include <algorithm>
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static bool isPrintableChar(char c)
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{
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return uchar(c) >= 32 && uchar(c) < 128;
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}
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static bool isPrintable(const QByteArray &ba)
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{
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return std::all_of(ba.cbegin(), ba.cend(), isPrintableChar);
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}
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static QString byteArrayToString(const QByteArray &ba)
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{
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if (isPrintable(ba))
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return QString::fromLatin1(ba);
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QString result;
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for (char c : ba) {
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if (isPrintableChar(c)) {
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if (c == '\\')
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result += QLatin1Char(c);
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result += QLatin1Char(c);
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} else {
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const uint uc = uchar(c);
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result += "\\x";
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if (uc < 16)
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result += '0';
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result += QString::number(uc, 16);
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}
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}
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return result;
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}
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TypeChecker::TypeChecker()
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{
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boolExp.setPattern("^(true)|(false)$");
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boolExp.setPatternOptions(QRegularExpression::CaseInsensitiveOption);
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Q_ASSERT(boolExp.isValid());
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byteArrayExp.setPattern(R"RX(^[\x00-\xff]*$)RX");
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charExp.setPattern("^.$");
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Q_ASSERT(charExp.isValid());
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colorExp.setPattern(R"RX(^\(([0-9]*),([0-9]*),([0-9]*),([0-9]*)\)$)RX");
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Q_ASSERT(colorExp.isValid());
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doubleExp.setPattern("");
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pointExp.setPattern(R"RX(^\((-?[0-9]*),(-?[0-9]*)\)$)RX");
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Q_ASSERT(pointExp.isValid());
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rectExp.setPattern(R"RX(^\((-?[0-9]*),(-?[0-9]*),(-?[0-9]*),(-?[0-9]*)\)$)RX");
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Q_ASSERT(rectExp.isValid());
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signedIntegerExp.setPattern("^-?[0-9]*$");
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Q_ASSERT(signedIntegerExp.isValid());
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sizeExp = pointExp;
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unsignedIntegerExp.setPattern("^[0-9]+$");
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Q_ASSERT(unsignedIntegerExp.isValid());
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const QString datePattern = "([0-9]{,4})-([0-9]{,2})-([0-9]{,2})";
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dateExp.setPattern('^' + datePattern + '$');
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Q_ASSERT(dateExp.isValid());
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const QString timePattern = "([0-9]{,2}):([0-9]{,2}):([0-9]{,2})";
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timeExp.setPattern('^' + timePattern + '$');
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Q_ASSERT(timeExp.isValid());
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dateTimeExp.setPattern('^' + datePattern + 'T' + timePattern + '$');
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Q_ASSERT(dateTimeExp.isValid());
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}
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VariantDelegate::VariantDelegate(const QSharedPointer<TypeChecker> &typeChecker,
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QObject *parent)
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: QStyledItemDelegate(parent),
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m_typeChecker(typeChecker)
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{
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}
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void VariantDelegate::paint(QPainter *painter,
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const QStyleOptionViewItem &option,
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const QModelIndex &index) const
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{
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if (index.column() == 2) {
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QVariant value = index.model()->data(index, Qt::UserRole);
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if (!isSupportedType(value.userType())) {
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QStyleOptionViewItem myOption = option;
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myOption.state &= ~QStyle::State_Enabled;
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QStyledItemDelegate::paint(painter, myOption, index);
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return;
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}
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}
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QStyledItemDelegate::paint(painter, option, index);
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}
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QWidget *VariantDelegate::createEditor(QWidget *parent,
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const QStyleOptionViewItem & /* option */,
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const QModelIndex &index) const
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{
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if (index.column() != 2)
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return nullptr;
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QVariant originalValue = index.model()->data(index, Qt::UserRole);
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if (!isSupportedType(originalValue.userType()))
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return nullptr;
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switch (originalValue.userType()) {
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case QMetaType::Bool:
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return new QCheckBox(parent);
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break;
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case QMetaType::Int:
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case QMetaType::LongLong: {
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auto spinBox = new QSpinBox(parent);
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spinBox->setRange(-32767, 32767);
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return spinBox;
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}
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case QMetaType::UInt:
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case QMetaType::ULongLong: {
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auto spinBox = new QSpinBox(parent);
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spinBox->setRange(0, 63335);
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return spinBox;
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}
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default:
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break;
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}
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QLineEdit *lineEdit = new QLineEdit(parent);
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lineEdit->setFrame(false);
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QRegularExpression regExp;
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switch (originalValue.userType()) {
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case QMetaType::Bool:
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regExp = m_typeChecker->boolExp;
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break;
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case QMetaType::QByteArray:
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regExp = m_typeChecker->byteArrayExp;
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break;
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case QMetaType::QChar:
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regExp = m_typeChecker->charExp;
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break;
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case QMetaType::QColor:
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regExp = m_typeChecker->colorExp;
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break;
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case QMetaType::QDate:
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regExp = m_typeChecker->dateExp;
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break;
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case QMetaType::QDateTime:
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regExp = m_typeChecker->dateTimeExp;
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break;
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case QMetaType::Double:
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regExp = m_typeChecker->doubleExp;
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break;
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case QMetaType::Int:
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case QMetaType::LongLong:
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regExp = m_typeChecker->signedIntegerExp;
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break;
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case QMetaType::QPoint:
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regExp = m_typeChecker->pointExp;
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break;
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case QMetaType::QRect:
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regExp = m_typeChecker->rectExp;
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break;
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case QMetaType::QSize:
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regExp = m_typeChecker->sizeExp;
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break;
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case QMetaType::QTime:
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regExp = m_typeChecker->timeExp;
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break;
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case QMetaType::UInt:
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case QMetaType::ULongLong:
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regExp = m_typeChecker->unsignedIntegerExp;
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break;
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default:
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break;
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}
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if (regExp.isValid()) {
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QValidator *validator = new QRegularExpressionValidator(regExp, lineEdit);
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lineEdit->setValidator(validator);
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}
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return lineEdit;
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}
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void VariantDelegate::setEditorData(QWidget *editor,
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const QModelIndex &index) const
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{
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QVariant value = index.model()->data(index, Qt::UserRole);
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if (auto spinBox = qobject_cast<QSpinBox *>(editor)) {
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const auto userType = value.userType();
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if (userType == QMetaType::UInt || userType == QMetaType::ULongLong)
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spinBox->setValue(value.toUInt());
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else
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spinBox->setValue(value.toInt());
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} else if (auto checkBox = qobject_cast<QCheckBox *>(editor)) {
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checkBox->setChecked(value.toBool());
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} else if (QLineEdit *lineEdit = qobject_cast<QLineEdit *>(editor)) {
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if (value.userType() == QMetaType::QByteArray
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&& !isPrintable(value.toByteArray())) {
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lineEdit->setReadOnly(true);
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}
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lineEdit->setText(displayText(value));
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}
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}
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void VariantDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
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const QModelIndex &index) const
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{
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const QVariant originalValue = index.model()->data(index, Qt::UserRole);
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QVariant value;
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if (auto spinBox = qobject_cast<QSpinBox *>(editor)) {
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value.setValue(spinBox->value());
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} else if (auto checkBox = qobject_cast<QCheckBox *>(editor)) {
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value.setValue(checkBox->isChecked());
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} else if (QLineEdit *lineEdit = qobject_cast<QLineEdit *>(editor)) {
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if (!lineEdit->isModified())
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return;
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QString text = lineEdit->text();
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const QValidator *validator = lineEdit->validator();
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if (validator) {
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int pos;
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if (validator->validate(text, pos) != QValidator::Acceptable)
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return;
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}
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QRegularExpressionMatch match;
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switch (originalValue.userType()) {
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case QMetaType::QChar:
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value = text.at(0);
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break;
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case QMetaType::QColor:
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match = m_typeChecker->colorExp.match(text);
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value = QColor(qMin(match.captured(1).toInt(), 255),
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qMin(match.captured(2).toInt(), 255),
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qMin(match.captured(3).toInt(), 255),
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qMin(match.captured(4).toInt(), 255));
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break;
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case QMetaType::QDate:
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{
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QDate date = QDate::fromString(text, Qt::ISODate);
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if (!date.isValid())
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return;
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value = date;
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}
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break;
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case QMetaType::QDateTime:
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{
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QDateTime dateTime = QDateTime::fromString(text, Qt::ISODate);
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if (!dateTime.isValid())
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return;
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value = dateTime;
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}
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break;
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case QMetaType::QPoint:
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match = m_typeChecker->pointExp.match(text);
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value = QPoint(match.captured(1).toInt(), match.captured(2).toInt());
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break;
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case QMetaType::QRect:
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match = m_typeChecker->rectExp.match(text);
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value = QRect(match.captured(1).toInt(), match.captured(2).toInt(),
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match.captured(3).toInt(), match.captured(4).toInt());
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break;
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case QMetaType::QSize:
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match = m_typeChecker->sizeExp.match(text);
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value = QSize(match.captured(1).toInt(), match.captured(2).toInt());
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break;
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case QMetaType::QStringList:
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value = text.split(',');
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break;
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case QMetaType::QTime:
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{
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QTime time = QTime::fromString(text, Qt::ISODate);
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if (!time.isValid())
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return;
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value = time;
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}
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break;
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default:
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value = text;
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value.convert(originalValue.metaType());
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}
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}
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model->setData(index, displayText(value), Qt::DisplayRole);
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model->setData(index, value, Qt::UserRole);
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}
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bool VariantDelegate::isSupportedType(int type)
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{
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switch (type) {
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case QMetaType::Bool:
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case QMetaType::QByteArray:
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case QMetaType::QChar:
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case QMetaType::QColor:
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case QMetaType::QDate:
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case QMetaType::QDateTime:
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case QMetaType::Double:
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case QMetaType::Int:
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case QMetaType::LongLong:
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case QMetaType::QPoint:
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case QMetaType::QRect:
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case QMetaType::QSize:
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case QMetaType::QString:
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case QMetaType::QStringList:
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case QMetaType::QTime:
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case QMetaType::UInt:
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case QMetaType::ULongLong:
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return true;
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default:
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return false;
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}
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}
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QString VariantDelegate::displayText(const QVariant &value)
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{
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switch (value.userType()) {
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case QMetaType::Bool:
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return value.toBool() ? "✓" : "☐";
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case QMetaType::QByteArray:
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return byteArrayToString(value.toByteArray());
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case QMetaType::QChar:
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case QMetaType::Double:
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case QMetaType::Int:
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case QMetaType::LongLong:
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case QMetaType::QString:
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case QMetaType::UInt:
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case QMetaType::ULongLong:
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return value.toString();
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case QMetaType::QColor:
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{
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QColor color = qvariant_cast<QColor>(value);
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return QString("(%1,%2,%3,%4)")
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.arg(color.red()).arg(color.green())
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.arg(color.blue()).arg(color.alpha());
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}
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case QMetaType::QDate:
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return value.toDate().toString(Qt::ISODate);
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case QMetaType::QDateTime:
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return value.toDateTime().toString(Qt::ISODate);
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case QMetaType::UnknownType:
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return "<Invalid>";
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case QMetaType::QPoint:
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{
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QPoint point = value.toPoint();
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return QString("(%1,%2)").arg(point.x()).arg(point.y());
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}
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case QMetaType::QRect:
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{
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QRect rect = value.toRect();
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return QString("(%1,%2,%3,%4)")
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.arg(rect.x()).arg(rect.y())
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.arg(rect.width()).arg(rect.height());
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}
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case QMetaType::QSize:
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{
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QSize size = value.toSize();
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return QString("(%1,%2)").arg(size.width()).arg(size.height());
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}
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case QMetaType::QStringList:
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return value.toStringList().join(',');
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case QMetaType::QTime:
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return value.toTime().toString(Qt::ISODate);
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default:
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break;
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}
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return QString("<%1>").arg(value.typeName());
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}
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