From Forum Nokia Wiki

ID	...	Creation date	June 18, 2009
Platform	S60 3rd Edition, FP1, FP2 S60 5th Edition	Tested on devices
Category	Qt for Symbian	Subcategory	UI

Keywords (APIs, classes, methods, functions): QTextEdit, QSignalMapper

Overview

This code example shows how to work with QTextEdit. QTextEdit class can be used as a replacement for Symbian class CEikRichTextEditor. The example duplicates all the functionalities from the Forum Nokia example S60 Platform: Rich Text Editor Example.

This snippet can be self-signed. As it does not use any API which require developer/certified signing.

Note

All of the QTextEdit functionality has not been ported to S60 yet.

Preconditions

• Download and Install latest version Qt for Symbian - Installation packages which has links on how to install the latest version

Images

Source

QtRichTextEditor.zip

#ifndef MAINWINDOW_H
#define MAINWINDOW_H
 
#include <QtGui/QMainWindow>
#include <QSignalMapper>
 
namespace Ui
{
    class MainWindow;
}
 
class MainWindow : public QMainWindow
{
    Q_OBJECT
 
public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();
 
private slots:
    void setColor(int color);
    void setWeight(bool bold);
    void setStrike(bool strike);
    void setAlignment(int alignment);
    void setFontSize(int size);
 
private:
    Ui::MainWindow *ui;
    QSignalMapper *colorMapper;
    QSignalMapper *alignmentMapper;
    QSignalMapper *fontMapper;
 
};
 
#endif // MAINWINDOW_H

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent), ui(new Ui::MainWindow)
{
    ui->setupUi(this);
 
    colorMapper = new QSignalMapper(this);
    alignmentMapper = new QSignalMapper(this);
    fontMapper = new QSignalMapper(this);
 
    connect(ui->actionBlack, SIGNAL(triggered()), colorMapper, SLOT(map()));
    connect(ui->actionBlue, SIGNAL(triggered()), colorMapper, SLOT(map()));
    connect(ui->actionGreen, SIGNAL(triggered()), colorMapper, SLOT(map()));
    connect(ui->actionRed, SIGNAL(triggered()), colorMapper, SLOT(map()));
 
    colorMapper->setMapping(ui->actionBlack, 0x00000000);
    colorMapper->setMapping(ui->actionBlue, 0x000000FF);
    colorMapper->setMapping(ui->actionGreen, 0x0000FF00);
    colorMapper->setMapping(ui->actionRed, 0x00FF0000);
 
    connect(ui->actionLeft, SIGNAL(triggered()), alignmentMapper, SLOT(map()));
    connect(ui->actionRight, SIGNAL(triggered()), alignmentMapper, SLOT(map()));
    connect(ui->actionCenter, SIGNAL(triggered()), alignmentMapper, SLOT(map()));
    connect(ui->actionJustify, SIGNAL(triggered()), alignmentMapper, SLOT(map()));
 
    alignmentMapper->setMapping(ui->actionLeft, Qt::AlignLeft);
    alignmentMapper->setMapping(ui->actionRight, Qt::AlignRight);
    alignmentMapper->setMapping(ui->actionCenter, Qt::AlignHCenter);
    alignmentMapper->setMapping(ui->actionJustify, Qt::AlignJustify);
 
    connect(ui->actionNormal, SIGNAL(triggered()), fontMapper, SLOT(map()));
    connect(ui->actionSmall, SIGNAL(triggered()), fontMapper, SLOT(map()));
    connect(ui->actionLarge, SIGNAL(triggered()), fontMapper, SLOT(map()));
 
    fontMapper->setMapping(ui->actionNormal, 10);
    fontMapper->setMapping(ui->actionSmall, 8);
    fontMapper->setMapping(ui->actionLarge, 14);
 
    connect(colorMapper, SIGNAL(mapped(int)), this, SLOT(setColor(int)));
    connect(alignmentMapper, SIGNAL(mapped(int)), this, SLOT(setAlignment(int)));
    connect(fontMapper, SIGNAL(mapped(int)), this, SLOT(setFontSize(int)));
 
    connect(ui->actionBold, SIGNAL(toggled(bool)), this, SLOT(setWeight(bool)));
    connect(ui->actionStrikethrough, SIGNAL(toggled(bool)), this, SLOT(setStrike(bool)));
}

MainWindow::~MainWindow()
{
    delete alignmentMapper;
    delete colorMapper;
    delete fontMapper;
    delete ui;
}

void MainWindow::setColor(int color)
{
    QRgb c(color);
    ui->textEdit->setTextColor(c);
}

void MainWindow::setWeight(bool bold)
{
    ui->textEdit->setFontWeight(bold ? QFont::Bold : QFont::Normal);
}

void MainWindow::setStrike(bool strike)
{
    QFont font = ui->textEdit->currentFont();
    font.setStrikeOut(strike);
    ui->textEdit->setFont(font);
}

void MainWindow::setAlignment(int alignment)
{
    Qt::Alignment a(alignment);
    ui->textEdit->setAlignment(a);
}

void MainWindow::setFontSize(int size)
{
    qreal s(size);
    ui->textEdit->setFontPointSize(s);
}

External Links

• QTextEdit: QTextEdit reference
• QSignalMapper: QSignalMapper reference