1 files changed, 316 insertions, 0 deletions
diff --git a/examples/tools/settingseditor/variantdelegate.cpp b/examples/tools/settingseditor/variantdelegate.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Nokia Corporation and its Subsidiary(-ies) 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."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "variantdelegate.h"
+
+VariantDelegate::VariantDelegate(QObject *parent)
+    : QItemDelegate(parent)
+{
+    boolExp.setPattern("true|false");
+    boolExp.setCaseSensitivity(Qt::CaseInsensitive);
+
+    byteArrayExp.setPattern("[\\x00-\\xff]*");
+    charExp.setPattern(".");
+    colorExp.setPattern("\\(([0-9]*),([0-9]*),([0-9]*),([0-9]*)\\)");
+    doubleExp.setPattern("");
+    pointExp.setPattern("\\((-?[0-9]*),(-?[0-9]*)\\)");
+    rectExp.setPattern("\\((-?[0-9]*),(-?[0-9]*),(-?[0-9]*),(-?[0-9]*)\\)");
+    signedIntegerExp.setPattern("-?[0-9]*");
+    sizeExp = pointExp;
+    unsignedIntegerExp.setPattern("[0-9]*");
+
+    dateExp.setPattern("([0-9]{,4})-([0-9]{,2})-([0-9]{,2})");
+    timeExp.setPattern("([0-9]{,2}):([0-9]{,2}):([0-9]{,2})");
+    dateTimeExp.setPattern(dateExp.pattern() + "T" + timeExp.pattern());
+}
+
+void VariantDelegate::paint(QPainter *painter,
+                            const QStyleOptionViewItem &option,
+                            const QModelIndex &index) const
+{
+    if (index.column() == 2) {
+        QVariant value = index.model()->data(index, Qt::UserRole);
+        if (!isSupportedType(value.type())) {
+            QStyleOptionViewItem myOption = option;
+            myOption.state &= ~QStyle::State_Enabled;
+            QItemDelegate::paint(painter, myOption, index);
+            return;
+        }
+    }
+
+    QItemDelegate::paint(painter, option, index);
+}
+
+QWidget *VariantDelegate::createEditor(QWidget *parent,
+        const QStyleOptionViewItem & /* option */,
+        const QModelIndex &index) const
+{
+    if (index.column() != 2)
+        return 0;
+
+    QVariant originalValue = index.model()->data(index, Qt::UserRole);
+    if (!isSupportedType(originalValue.type()))
+        return 0;
+
+    QLineEdit *lineEdit = new QLineEdit(parent);
+    lineEdit->setFrame(false);
+
+    QRegExp regExp;
+
+    switch (originalValue.type()) {
+    case QVariant::Bool:
+        regExp = boolExp;
+        break;
+    case QVariant::ByteArray:
+        regExp = byteArrayExp;
+        break;
+    case QVariant::Char:
+        regExp = charExp;
+        break;
+    case QVariant::Color:
+        regExp = colorExp;
+        break;
+    case QVariant::Date:
+        regExp = dateExp;
+        break;
+    case QVariant::DateTime:
+        regExp = dateTimeExp;
+        break;
+    case QVariant::Double:
+        regExp = doubleExp;
+        break;
+    case QVariant::Int:
+    case QVariant::LongLong:
+        regExp = signedIntegerExp;
+        break;
+    case QVariant::Point:
+        regExp = pointExp;
+        break;
+    case QVariant::Rect:
+        regExp = rectExp;
+        break;
+    case QVariant::Size:
+        regExp = sizeExp;
+        break;
+    case QVariant::Time:
+        regExp = timeExp;
+        break;
+    case QVariant::UInt:
+    case QVariant::ULongLong:
+        regExp = unsignedIntegerExp;
+        break;
+    default:
+        ;
+    }
+
+    if (!regExp.isEmpty()) {
+        QValidator *validator = new QRegExpValidator(regExp, lineEdit);
+        lineEdit->setValidator(validator);
+    }
+
+    return lineEdit;
+}
+
+void VariantDelegate::setEditorData(QWidget *editor,
+                                    const QModelIndex &index) const
+{
+    QVariant value = index.model()->data(index, Qt::UserRole);
+    if (QLineEdit *lineEdit = qobject_cast<QLineEdit *>(editor))
+        lineEdit->setText(displayText(value));
+}
+
+void VariantDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
+                                   const QModelIndex &index) const
+{
+    QLineEdit *lineEdit = qobject_cast<QLineEdit *>(editor);
+    if (!lineEdit->isModified())
+        return;
+
+    QString text = lineEdit->text();
+    const QValidator *validator = lineEdit->validator();
+    if (validator) {
+        int pos;
+        if (validator->validate(text, pos) != QValidator::Acceptable)
+            return;
+    }
+
+    QVariant originalValue = index.model()->data(index, Qt::UserRole);
+    QVariant value;
+
+    switch (originalValue.type()) {
+    case QVariant::Char:
+        value = text.at(0);
+        break;
+    case QVariant::Color:
+        colorExp.exactMatch(text);
+        value = QColor(qMin(colorExp.cap(1).toInt(), 255),
+                       qMin(colorExp.cap(2).toInt(), 255),
+                       qMin(colorExp.cap(3).toInt(), 255),
+                       qMin(colorExp.cap(4).toInt(), 255));
+        break;
+    case QVariant::Date:
+        {
+            QDate date = QDate::fromString(text, Qt::ISODate);
+            if (!date.isValid())
+                return;
+            value = date;
+        }
+        break;
+    case QVariant::DateTime:
+        {
+            QDateTime dateTime = QDateTime::fromString(text, Qt::ISODate);
+            if (!dateTime.isValid())
+                return;
+            value = dateTime;
+        }
+        break;
+    case QVariant::Point:
+        pointExp.exactMatch(text);
+        value = QPoint(pointExp.cap(1).toInt(), pointExp.cap(2).toInt());
+        break;
+    case QVariant::Rect:
+        rectExp.exactMatch(text);
+        value = QRect(rectExp.cap(1).toInt(), rectExp.cap(2).toInt(),
+                      rectExp.cap(3).toInt(), rectExp.cap(4).toInt());
+        break;
+    case QVariant::Size:
+        sizeExp.exactMatch(text);
+        value = QSize(sizeExp.cap(1).toInt(), sizeExp.cap(2).toInt());
+        break;
+    case QVariant::StringList:
+        value = text.split(",");
+        break;
+    case QVariant::Time:
+        {
+            QTime time = QTime::fromString(text, Qt::ISODate);
+            if (!time.isValid())
+                return;
+            value = time;
+        }
+        break;
+    default:
+        value = text;
+        value.convert(originalValue.type());
+    }
+
+    model->setData(index, displayText(value), Qt::DisplayRole);
+    model->setData(index, value, Qt::UserRole);
+}
+
+bool VariantDelegate::isSupportedType(QVariant::Type type)
+{
+    switch (type) {
+    case QVariant::Bool:
+    case QVariant::ByteArray:
+    case QVariant::Char:
+    case QVariant::Color:
+    case QVariant::Date:
+    case QVariant::DateTime:
+    case QVariant::Double:
+    case QVariant::Int:
+    case QVariant::LongLong:
+    case QVariant::Point:
+    case QVariant::Rect:
+    case QVariant::Size:
+    case QVariant::String:
+    case QVariant::StringList:
+    case QVariant::Time:
+    case QVariant::UInt:
+    case QVariant::ULongLong:
+        return true;
+    default:
+        return false;
+    }
+}
+
+QString VariantDelegate::displayText(const QVariant &value)
+{
+    switch (value.type()) {
+    case QVariant::Bool:
+    case QVariant::ByteArray:
+    case QVariant::Char:
+    case QVariant::Double:
+    case QVariant::Int:
+    case QVariant::LongLong:
+    case QVariant::String:
+    case QVariant::UInt:
+    case QVariant::ULongLong:
+        return value.toString();
+    case QVariant::Color:
+        {
+            QColor color = qvariant_cast<QColor>(value);
+            return QString("(%1,%2,%3,%4)")
+                   .arg(color.red()).arg(color.green())
+                   .arg(color.blue()).arg(color.alpha());
+        }
+    case QVariant::Date:
+        return value.toDate().toString(Qt::ISODate);
+    case QVariant::DateTime:
+        return value.toDateTime().toString(Qt::ISODate);
+    case QVariant::Invalid:
+        return "<Invalid>";
+    case QVariant::Point:
+        {
+            QPoint point = value.toPoint();
+            return QString("(%1,%2)").arg(point.x()).arg(point.y());
+        }
+    case QVariant::Rect:
+        {
+            QRect rect = value.toRect();
+            return QString("(%1,%2,%3,%4)")
+                   .arg(rect.x()).arg(rect.y())
+                   .arg(rect.width()).arg(rect.height());
+        }
+    case QVariant::Size:
+        {
+            QSize size = value.toSize();
+            return QString("(%1,%2)").arg(size.width()).arg(size.height());
+        }
+    case QVariant::StringList:
+        return value.toStringList().join(",");
+    case QVariant::Time:
+        return value.toTime().toString(Qt::ISODate);
+    default:
+        break;
+    }
+    return QString("<%1>").arg(value.typeName());
+}