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This tiny editor uses a pie menu on a QTextEdit. It supports some common operations such as undo, redo, cut, copy and paste.
editor.h:
/****************************************************************************
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation ([email protected])
**
** This file is part of a Qt Solutions component.
**
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Solutions 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.
**
** Please note Third Party Software included with Qt Solutions may impose
** additional restrictions and it is the user's responsibility to ensure
** that they have met the licensing requirements of the GPL, LGPL, or Qt
** Solutions Commercial license and the relevant license of the Third
** Party Software they are using.
**
** If you are unsure which license is appropriate for your use, please
** contact Nokia at [email protected].
**
****************************************************************************/
#ifndef EDITOR_H
#define EDITOR_H
#include <QtGui/QTextEdit>
#include <QtGui/QMouseEvent>
class QtPieMenu;
class Editor : public QTextEdit
{
Q_OBJECT
public:
Editor(QWidget *parent = 0, const char *name = 0);
QSize sizeHint() const;
protected slots:
void setUndoAvailable(bool);
void setRedoAvailable(bool);
void setCopyAvailable(bool);
void setPasteAvailable(void);
void del();
protected:
void mousePressEvent(QMouseEvent *e);
void contextMenuEvent(QContextMenuEvent *e);
private:
QtPieMenu *p;
QtPieMenu *markMenu;
};
#endif
editor.cpp
/****************************************************************************
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation ([email protected])
**
** This file is part of a Qt Solutions component.
**
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Solutions 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.
**
** Please note Third Party Software included with Qt Solutions may impose
** additional restrictions and it is the user's responsibility to ensure
** that they have met the licensing requirements of the GPL, LGPL, or Qt
** Solutions Commercial license and the relevant license of the Third
** Party Software they are using.
**
** If you are unsure which license is appropriate for your use, please
** contact Nokia at [email protected].
**
****************************************************************************/
#include "editor.h"
#include <qtpiemenu.h>
#include <QtGui/QApplication>
#include <QtGui/QClipboard>
#include <QtGui/QTextCursor>
Editor::Editor(QWidget *parent, const char *name)
: QTextEdit(tr("Mark some text and activate the context menu!"), parent)
{
setObjectName(name);
document()->setUndoRedoEnabled(false);
p = new QtPieMenu("Root menu", this, "Root menu", 10, 50);
markMenu = new QtPieMenu("Edit", p, "Edit menu", 10, 50);
markMenu->insertItem("All", this, SLOT(selectAll()));
markMenu->insertItem("Cut", this, SLOT(cut()));
markMenu->insertItem("Del", this, SLOT(del()));
markMenu->insertItem("Copy", this, SLOT(copy()));
markMenu->setItemWeight(2, 0);
markMenu->setItemWeight(2, 2);
p->insertItem(markMenu);
p->insertItem("Undo", document(), SLOT(undo()));
p->insertItem("Paste", this, SLOT(paste()));
p->insertItem("Redo", document(), SLOT(redo()));
connect(this, SIGNAL(undoAvailable(bool)), SLOT(setUndoAvailable(bool)));
connect(this, SIGNAL(redoAvailable(bool)), SLOT(setRedoAvailable(bool)));
connect(this, SIGNAL(copyAvailable(bool)), SLOT(setCopyAvailable(bool)));
connect(QApplication::clipboard(), SIGNAL(dataChanged()), SLOT(setPasteAvailable()));
setUndoAvailable(false);
setRedoAvailable(false);
setCopyAvailable(false);
setPasteAvailable();
document()->setUndoRedoEnabled(true);
}
QSize Editor::sizeHint() const
{
return QSize(200, 150);
}
void Editor::mousePressEvent(QMouseEvent *e)
{
if ( e->button() & Qt::RightButton ) {
p->popup(e->globalPos());
return;
}
QTextEdit::mousePressEvent( e );
}
void Editor::contextMenuEvent(QContextMenuEvent *)
{
}
void Editor::setUndoAvailable(bool enabled)
{
p->setItemEnabled(enabled, 1);
}
void Editor::setRedoAvailable(bool enabled)
{
p->setItemEnabled(enabled, 3);
}
void Editor::setCopyAvailable(bool enabled)
{
markMenu->setItemEnabled(enabled, 1);
markMenu->setItemEnabled(enabled, 2);
markMenu->setItemEnabled(enabled, 3);
}
void Editor::setPasteAvailable()
{
bool enabled = !QApplication::clipboard()->text(QClipboard::Clipboard).isEmpty();
p->setItemEnabled(enabled, 2);
}
void Editor::del()
{
textCursor().removeSelectedText();
}
main.cpp:
/****************************************************************************
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation ([email protected])
**
** This file is part of a Qt Solutions component.
**
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Solutions 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.
**
** Please note Third Party Software included with Qt Solutions may impose
** additional restrictions and it is the user's responsibility to ensure
** that they have met the licensing requirements of the GPL, LGPL, or Qt
** Solutions Commercial license and the relevant license of the Third
** Party Software they are using.
**
** If you are unsure which license is appropriate for your use, please
** contact Nokia at [email protected].
**
****************************************************************************/
#include <QtGui/QApplication>
#include "editor.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
Editor window(0, "Editor");
window.show();
return app.exec();
}
editor.pro:
TEMPLATE = app INCLUDEPATH += . include(../../src/qtpiemenu.pri) HEADERS += editor.h SOURCES += editor.cpp main.cpp
| Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies) | Trademarks | Qt Solutions |