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Abhijit Kundu
312
examples/decoration/main.cpp
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312
examples/decoration/main.cpp
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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**
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of a Qt Solutions component.
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**
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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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**
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****************************************************************************/
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#include <QApplication>
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#include <QMap>
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#include <QDoubleSpinBox>
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#include "qtpropertybrowser.h"
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#include "qteditorfactory.h"
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#include "qttreepropertybrowser.h"
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class DecoratedDoublePropertyManager : public QtDoublePropertyManager
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{
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Q_OBJECT
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public:
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DecoratedDoublePropertyManager(QObject *parent = 0);
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~DecoratedDoublePropertyManager();
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QString prefix(const QtProperty *property) const;
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QString suffix(const QtProperty *property) const;
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public Q_SLOTS:
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void setPrefix(QtProperty *property, const QString &prefix);
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void setSuffix(QtProperty *property, const QString &suffix);
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Q_SIGNALS:
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void prefixChanged(QtProperty *property, const QString &prefix);
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void suffixChanged(QtProperty *property, const QString &suffix);
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protected:
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QString valueText(const QtProperty *property) const;
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virtual void initializeProperty(QtProperty *property);
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virtual void uninitializeProperty(QtProperty *property);
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private:
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struct Data {
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QString prefix;
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QString suffix;
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};
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QMap<const QtProperty *, Data> propertyToData;
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};
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DecoratedDoublePropertyManager::DecoratedDoublePropertyManager(QObject *parent)
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: QtDoublePropertyManager(parent)
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{
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}
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DecoratedDoublePropertyManager::~DecoratedDoublePropertyManager()
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{
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}
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QString DecoratedDoublePropertyManager::prefix(const QtProperty *property) const
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{
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if (!propertyToData.contains(property))
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return QString();
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return propertyToData[property].prefix;
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}
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QString DecoratedDoublePropertyManager::suffix(const QtProperty *property) const
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{
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if (!propertyToData.contains(property))
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return QString();
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return propertyToData[property].suffix;
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}
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void DecoratedDoublePropertyManager::setPrefix(QtProperty *property, const QString &prefix)
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{
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if (!propertyToData.contains(property))
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return;
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DecoratedDoublePropertyManager::Data data = propertyToData[property];
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if (data.prefix == prefix)
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return;
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data.prefix = prefix;
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propertyToData[property] = data;
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emit propertyChanged(property);
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emit prefixChanged(property, prefix);
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}
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void DecoratedDoublePropertyManager::setSuffix(QtProperty *property, const QString &suffix)
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{
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if (!propertyToData.contains(property))
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return;
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DecoratedDoublePropertyManager::Data data = propertyToData[property];
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if (data.suffix == suffix)
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return;
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data.suffix = suffix;
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propertyToData[property] = data;
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emit propertyChanged(property);
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emit suffixChanged(property, suffix);
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}
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QString DecoratedDoublePropertyManager::valueText(const QtProperty *property) const
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{
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QString text = QtDoublePropertyManager::valueText(property);
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if (!propertyToData.contains(property))
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return text;
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DecoratedDoublePropertyManager::Data data = propertyToData[property];
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text = data.prefix + text + data.suffix;
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return text;
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}
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void DecoratedDoublePropertyManager::initializeProperty(QtProperty *property)
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{
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propertyToData[property] = DecoratedDoublePropertyManager::Data();
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QtDoublePropertyManager::initializeProperty(property);
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}
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void DecoratedDoublePropertyManager::uninitializeProperty(QtProperty *property)
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{
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propertyToData.remove(property);
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QtDoublePropertyManager::uninitializeProperty(property);
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}
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class DecoratedDoubleSpinBoxFactory : public QtAbstractEditorFactory<DecoratedDoublePropertyManager>
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{
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Q_OBJECT
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public:
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DecoratedDoubleSpinBoxFactory(QObject *parent = 0);
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~DecoratedDoubleSpinBoxFactory();
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protected:
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void connectPropertyManager(DecoratedDoublePropertyManager *manager);
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QWidget *createEditor(DecoratedDoublePropertyManager *manager, QtProperty *property,
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QWidget *parent);
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void disconnectPropertyManager(DecoratedDoublePropertyManager *manager);
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private slots:
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void slotPrefixChanged(QtProperty *property, const QString &prefix);
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void slotSuffixChanged(QtProperty *property, const QString &prefix);
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void slotEditorDestroyed(QObject *object);
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private:
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/* We delegate responsibilities for QtDoublePropertyManager, which is a base class
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of DecoratedDoublePropertyManager to appropriate QtDoubleSpinBoxFactory */
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QtDoubleSpinBoxFactory *originalFactory;
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QMap<QtProperty *, QList<QDoubleSpinBox *> > createdEditors;
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QMap<QDoubleSpinBox *, QtProperty *> editorToProperty;
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};
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DecoratedDoubleSpinBoxFactory::DecoratedDoubleSpinBoxFactory(QObject *parent)
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: QtAbstractEditorFactory<DecoratedDoublePropertyManager>(parent)
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{
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originalFactory = new QtDoubleSpinBoxFactory(this);
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}
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DecoratedDoubleSpinBoxFactory::~DecoratedDoubleSpinBoxFactory()
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{
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// not need to delete editors because they will be deleted by originalFactory in its destructor
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}
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void DecoratedDoubleSpinBoxFactory::connectPropertyManager(DecoratedDoublePropertyManager *manager)
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{
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originalFactory->addPropertyManager(manager);
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connect(manager, SIGNAL(prefixChanged(QtProperty *, const QString &)), this, SLOT(slotPrefixChanged(QtProperty *, const QString &)));
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connect(manager, SIGNAL(suffixChanged(QtProperty *, const QString &)), this, SLOT(slotSuffixChanged(QtProperty *, const QString &)));
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}
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QWidget *DecoratedDoubleSpinBoxFactory::createEditor(DecoratedDoublePropertyManager *manager, QtProperty *property,
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QWidget *parent)
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{
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QtAbstractEditorFactoryBase *base = originalFactory;
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QWidget *w = base->createEditor(property, parent);
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if (!w)
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return 0;
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QDoubleSpinBox *spinBox = qobject_cast<QDoubleSpinBox *>(w);
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if (!spinBox)
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return 0;
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spinBox->setPrefix(manager->prefix(property));
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spinBox->setSuffix(manager->suffix(property));
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createdEditors[property].append(spinBox);
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editorToProperty[spinBox] = property;
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return spinBox;
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}
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void DecoratedDoubleSpinBoxFactory::disconnectPropertyManager(DecoratedDoublePropertyManager *manager)
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{
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originalFactory->removePropertyManager(manager);
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disconnect(manager, SIGNAL(prefixChanged(QtProperty *, const QString &)), this, SLOT(slotPrefixChanged(QtProperty *, const QString &)));
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disconnect(manager, SIGNAL(suffixChanged(QtProperty *, const QString &)), this, SLOT(slotSuffixChanged(QtProperty *, const QString &)));
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}
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void DecoratedDoubleSpinBoxFactory::slotPrefixChanged(QtProperty *property, const QString &prefix)
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{
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if (!createdEditors.contains(property))
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return;
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DecoratedDoublePropertyManager *manager = propertyManager(property);
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if (!manager)
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return;
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QList<QDoubleSpinBox *> editors = createdEditors[property];
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QListIterator<QDoubleSpinBox *> itEditor(editors);
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while (itEditor.hasNext()) {
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QDoubleSpinBox *editor = itEditor.next();
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editor->setPrefix(prefix);
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}
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}
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void DecoratedDoubleSpinBoxFactory::slotSuffixChanged(QtProperty *property, const QString &prefix)
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{
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if (!createdEditors.contains(property))
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return;
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DecoratedDoublePropertyManager *manager = propertyManager(property);
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if (!manager)
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return;
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QList<QDoubleSpinBox *> editors = createdEditors[property];
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QListIterator<QDoubleSpinBox *> itEditor(editors);
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while (itEditor.hasNext()) {
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QDoubleSpinBox *editor = itEditor.next();
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editor->setSuffix(prefix);
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}
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}
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void DecoratedDoubleSpinBoxFactory::slotEditorDestroyed(QObject *object)
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{
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QMap<QDoubleSpinBox *, QtProperty *>::ConstIterator itEditor =
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editorToProperty.constBegin();
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while (itEditor != editorToProperty.constEnd()) {
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if (itEditor.key() == object) {
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QDoubleSpinBox *editor = itEditor.key();
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QtProperty *property = itEditor.value();
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editorToProperty.remove(editor);
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createdEditors[property].removeAll(editor);
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if (createdEditors[property].isEmpty())
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createdEditors.remove(property);
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return;
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}
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itEditor++;
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}
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}
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int main(int argc, char **argv)
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{
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QApplication app(argc, argv);
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QtDoublePropertyManager *undecoratedManager = new QtDoublePropertyManager();
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QtProperty *undecoratedProperty = undecoratedManager->addProperty("Undecorated");
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undecoratedManager->setValue(undecoratedProperty, 123.45);
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DecoratedDoublePropertyManager *decoratedManager = new DecoratedDoublePropertyManager();
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QtProperty *decoratedProperty = decoratedManager->addProperty("Decorated");
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decoratedManager->setPrefix(decoratedProperty, "speed: ");
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decoratedManager->setSuffix(decoratedProperty, " km/h");
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decoratedManager->setValue(decoratedProperty, 123.45);
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QtDoubleSpinBoxFactory *undecoratedFactory = new QtDoubleSpinBoxFactory();
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DecoratedDoubleSpinBoxFactory *decoratedFactory = new DecoratedDoubleSpinBoxFactory();
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QtTreePropertyBrowser *editor = new QtTreePropertyBrowser();
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editor->setFactoryForManager(undecoratedManager, undecoratedFactory);
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editor->setFactoryForManager(decoratedManager, decoratedFactory);
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editor->addProperty(undecoratedProperty);
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editor->addProperty(decoratedProperty);
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editor->show();
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int ret = app.exec();
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delete decoratedFactory;
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delete decoratedManager;
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delete undecoratedFactory;
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delete undecoratedManager;
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delete editor;
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return ret;
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}
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#include "main.moc"
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