Просмотр исходного текста страницы C++/Qt/QComboBox

==Color list editor==


   
<source lang="cpp">  
/****************************************************************************
**
** Copyright (C) 2009 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef COLORLISTEDITOR_H
#define COLORLISTEDITOR_H
#include <QComboBox>
QT_BEGIN_NAMESPACE
class QColor;
class QWidget;
QT_END_NAMESPACE

class ColorListEditor : public QComboBox
{
    Q_OBJECT
    Q_PROPERTY(QColor color READ color WRITE setColor USER true)
public:
    ColorListEditor(QWidget *widget = 0);
public:
    QColor color() const;
    void setColor(QColor c);
private:
    void populateList();
};

#endif


#include <QtGui>
#include "colorlisteditor.h"
ColorListEditor::ColorListEditor(QWidget *widget) : QComboBox(widget)
{
    populateList();
}

QColor ColorListEditor::color() const
{
    return qVariantValue<QColor>(itemData(currentIndex(), Qt::DecorationRole));
}

void ColorListEditor::setColor(QColor color)
{
    setCurrentIndex(findData(color, int(Qt::DecorationRole)));
}

void ColorListEditor::populateList()
{
    QStringList colorNames = QColor::colorNames();
    for (int i = 0; i < colorNames.size(); ++i) {
        QColor color(colorNames[i]);
        insertItem(i, colorNames[i]);
        setItemData(i, color, Qt::DecorationRole);
    }
}



#ifndef WINDOW_H
#define WINDOW_H
#include <QWidget>
class Window : public QWidget
{
    Q_OBJECT
public:
    Window();
private:
    void createGUI();
};
#endif


#include <QtGui>
#include "window.h"
#include "colorlisteditor.h"

Window::Window()
{
    QItemEditorFactory *factory = new QItemEditorFactory;
    QItemEditorCreatorBase *colorListCreator =
        new QStandardItemEditorCreator<ColorListEditor>();
    factory->registerEditor(QVariant::Color, colorListCreator);
    QItemEditorFactory::setDefaultFactory(factory);
    createGUI();
}

void Window::createGUI()
{
    QList<QPair<QString, QColor> > list;
    list << QPair<QString, QColor>(tr("Alice"), QColor("aliceblue")) <<
            QPair<QString, QColor>(tr("Neptun"), QColor("aquamarine")) <<
            QPair<QString, QColor>(tr("Ferdinand"), QColor("springgreen"));
    QTableWidget *table = new QTableWidget(3, 2);
    table->setHorizontalHeaderLabels(QStringList() << tr("Name")
                                                   << tr("Hair Color"));
    table->verticalHeader()->setVisible(false);
    table->resize(150, 50);
    for (int i = 0; i < 3; ++i) {
        QPair<QString, QColor> pair = list.at(i);
        QTableWidgetItem *nameItem = new QTableWidgetItem(pair.first);
        QTableWidgetItem *colorItem = new QTableWidgetItem;
        colorItem->setData(Qt::DisplayRole, pair.second);
        table->setItem(i, 0, nameItem);
        table->setItem(i, 1, colorItem);
    }
    table->resizeColumnToContents(0);
    table->horizontalHeader()->setStretchLastSection(true);
    QGridLayout *layout = new QGridLayout;
    layout->addWidget(table, 0, 0);
    setLayout(layout);
    setWindowTitle(tr("Color Editor Factory"));
}


#include <QtGui>
#include "window.h"
int main(int argv, char **args)
{
    QApplication app(argv, args);
    Window window;
    window.show();
    return app.exec();
}
   
    
  </source>