a83b2c64a9
The example is meant to show an item delegate with a line edit with QRegularExpression-based validation depending on type. Unfortunately, this does not work since QSettings mostly return QString types. Fix it to a partially working state by - Making the expressions match from beginning to end which was overlooked in the QRegExp->QRegularExpression change. - Use QCheckBox, QSpinBox for bool/int since it is silly to have a user edit a bool value by typing 'true'/'false'. - Move the expressions out to a separate struct to be able to do some guessing of the type when reading the QSettings, implement for bool and int. - Use a fancy Unicode checkmark for displaying bools. - Fix the garbled display of QByteArray with binary data by displaying them with hex characters and setting them read-only. Change-Id: Iba22dfafc3b813b3fd3d2915ef5210d661049382 Reviewed-by: Paul Wicking <paul.wicking@qt.io>
101 lines
3.9 KiB
C++
101 lines
3.9 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2016 The Qt Company Ltd.
|
|
** Contact: https://www.qt.io/licensing/
|
|
**
|
|
** This file is part of the examples of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:BSD$
|
|
** 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.
|
|
**
|
|
** BSD License Usage
|
|
** Alternatively, you may use this file under the terms of the BSD license
|
|
** as follows:
|
|
**
|
|
** "Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions are
|
|
** met:
|
|
** * Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** * Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in
|
|
** the documentation and/or other materials provided with the
|
|
** distribution.
|
|
** * Neither the name of The Qt Company Ltd nor the names of its
|
|
** contributors may be used to endorse or promote products derived
|
|
** from this software without specific prior written permission.
|
|
**
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#ifndef VARIANTDELEGATE_H
|
|
#define VARIANTDELEGATE_H
|
|
|
|
#include <QStyledItemDelegate>
|
|
#include <QRegularExpression>
|
|
#include <QSharedPointer>
|
|
|
|
struct TypeChecker
|
|
{
|
|
TypeChecker();
|
|
|
|
QRegularExpression boolExp;
|
|
QRegularExpression byteArrayExp;
|
|
QRegularExpression charExp;
|
|
QRegularExpression colorExp;
|
|
QRegularExpression dateExp;
|
|
QRegularExpression dateTimeExp;
|
|
QRegularExpression doubleExp;
|
|
QRegularExpression pointExp;
|
|
QRegularExpression rectExp;
|
|
QRegularExpression signedIntegerExp;
|
|
QRegularExpression sizeExp;
|
|
QRegularExpression timeExp;
|
|
QRegularExpression unsignedIntegerExp;
|
|
};
|
|
|
|
class VariantDelegate : public QStyledItemDelegate
|
|
{
|
|
Q_OBJECT
|
|
|
|
public:
|
|
explicit VariantDelegate(const QSharedPointer<TypeChecker> &typeChecker,
|
|
QObject *parent = nullptr);
|
|
|
|
void paint(QPainter *painter, const QStyleOptionViewItem &option,
|
|
const QModelIndex &index) const override;
|
|
QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option,
|
|
const QModelIndex &index) const override;
|
|
void setEditorData(QWidget *editor, const QModelIndex &index) const override;
|
|
void setModelData(QWidget *editor, QAbstractItemModel *model,
|
|
const QModelIndex &index) const override;
|
|
|
|
static bool isSupportedType(int type);
|
|
static QString displayText(const QVariant &value);
|
|
|
|
private:
|
|
QSharedPointer<TypeChecker> m_typeChecker;
|
|
};
|
|
|
|
#endif
|