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.
- $QT_BEGIN_LICENSE:LGPL$
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- 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
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- 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
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- If you have questions regarding the use of this file, please contact
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- $QT_END_LICENSE$
-
- /
- 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>