1fdfc2abfe
Change-Id: I02f2c620296fcd91d4967d58767ea33fc4e1e7dc Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
317 lines
9.8 KiB
C++
317 lines
9.8 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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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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** You may use this file under the terms of the BSD license 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 Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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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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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtWidgets>
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#include "variantdelegate.h"
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VariantDelegate::VariantDelegate(QObject *parent)
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: QItemDelegate(parent)
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{
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boolExp.setPattern("true|false");
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boolExp.setCaseSensitivity(Qt::CaseInsensitive);
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byteArrayExp.setPattern("[\\x00-\\xff]*");
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charExp.setPattern(".");
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colorExp.setPattern("\\(([0-9]*),([0-9]*),([0-9]*),([0-9]*)\\)");
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doubleExp.setPattern("");
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pointExp.setPattern("\\((-?[0-9]*),(-?[0-9]*)\\)");
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rectExp.setPattern("\\((-?[0-9]*),(-?[0-9]*),(-?[0-9]*),(-?[0-9]*)\\)");
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signedIntegerExp.setPattern("-?[0-9]*");
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sizeExp = pointExp;
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unsignedIntegerExp.setPattern("[0-9]*");
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dateExp.setPattern("([0-9]{,4})-([0-9]{,2})-([0-9]{,2})");
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timeExp.setPattern("([0-9]{,2}):([0-9]{,2}):([0-9]{,2})");
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dateTimeExp.setPattern(dateExp.pattern() + "T" + timeExp.pattern());
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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.type())) {
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QStyleOptionViewItem myOption = option;
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myOption.state &= ~QStyle::State_Enabled;
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QItemDelegate::paint(painter, myOption, index);
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return;
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}
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}
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QItemDelegate::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 0;
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QVariant originalValue = index.model()->data(index, Qt::UserRole);
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if (!isSupportedType(originalValue.type()))
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return 0;
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QLineEdit *lineEdit = new QLineEdit(parent);
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lineEdit->setFrame(false);
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QRegExp regExp;
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switch (originalValue.type()) {
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case QVariant::Bool:
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regExp = boolExp;
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break;
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case QVariant::ByteArray:
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regExp = byteArrayExp;
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break;
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case QVariant::Char:
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regExp = charExp;
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break;
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case QVariant::Color:
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regExp = colorExp;
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break;
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case QVariant::Date:
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regExp = dateExp;
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break;
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case QVariant::DateTime:
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regExp = dateTimeExp;
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break;
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case QVariant::Double:
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regExp = doubleExp;
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break;
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case QVariant::Int:
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case QVariant::LongLong:
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regExp = signedIntegerExp;
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break;
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case QVariant::Point:
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regExp = pointExp;
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break;
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case QVariant::Rect:
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regExp = rectExp;
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break;
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case QVariant::Size:
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regExp = sizeExp;
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break;
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case QVariant::Time:
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regExp = timeExp;
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break;
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case QVariant::UInt:
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case QVariant::ULongLong:
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regExp = unsignedIntegerExp;
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break;
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default:
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;
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}
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if (!regExp.isEmpty()) {
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QValidator *validator = new QRegExpValidator(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 (QLineEdit *lineEdit = qobject_cast<QLineEdit *>(editor))
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lineEdit->setText(displayText(value));
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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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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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QVariant originalValue = index.model()->data(index, Qt::UserRole);
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QVariant value;
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switch (originalValue.type()) {
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case QVariant::Char:
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value = text.at(0);
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break;
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case QVariant::Color:
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colorExp.exactMatch(text);
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value = QColor(qMin(colorExp.cap(1).toInt(), 255),
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qMin(colorExp.cap(2).toInt(), 255),
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qMin(colorExp.cap(3).toInt(), 255),
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qMin(colorExp.cap(4).toInt(), 255));
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break;
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case QVariant::Date:
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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 QVariant::DateTime:
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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 QVariant::Point:
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pointExp.exactMatch(text);
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value = QPoint(pointExp.cap(1).toInt(), pointExp.cap(2).toInt());
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break;
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case QVariant::Rect:
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rectExp.exactMatch(text);
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value = QRect(rectExp.cap(1).toInt(), rectExp.cap(2).toInt(),
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rectExp.cap(3).toInt(), rectExp.cap(4).toInt());
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break;
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case QVariant::Size:
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sizeExp.exactMatch(text);
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value = QSize(sizeExp.cap(1).toInt(), sizeExp.cap(2).toInt());
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break;
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case QVariant::StringList:
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value = text.split(",");
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break;
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case QVariant::Time:
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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.type());
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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(QVariant::Type type)
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{
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switch (type) {
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case QVariant::Bool:
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case QVariant::ByteArray:
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case QVariant::Char:
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case QVariant::Color:
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case QVariant::Date:
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case QVariant::DateTime:
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case QVariant::Double:
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case QVariant::Int:
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case QVariant::LongLong:
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case QVariant::Point:
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case QVariant::Rect:
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case QVariant::Size:
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case QVariant::String:
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case QVariant::StringList:
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case QVariant::Time:
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case QVariant::UInt:
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case QVariant::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.type()) {
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case QVariant::Bool:
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case QVariant::ByteArray:
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case QVariant::Char:
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case QVariant::Double:
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case QVariant::Int:
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case QVariant::LongLong:
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case QVariant::String:
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case QVariant::UInt:
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case QVariant::ULongLong:
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return value.toString();
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case QVariant::Color:
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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 QVariant::Date:
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return value.toDate().toString(Qt::ISODate);
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case QVariant::DateTime:
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return value.toDateTime().toString(Qt::ISODate);
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case QVariant::Invalid:
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return "<Invalid>";
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case QVariant::Point:
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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 QVariant::Rect:
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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 QVariant::Size:
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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 QVariant::StringList:
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return value.toStringList().join(",");
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case QVariant::Time:
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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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