Home · All Classes · Main Classes · Grouped Classes · Modules · Functions

stareditor.cpp Example File
^{itemviews/stardelegate/stareditor.cpp}

 /****************************************************************************
 **
 ** Copyright (C) 2007-2008 Trolltech ASA. All rights reserved.
 **
 ** This file is part of the documentation of the Qt Toolkit.
 **
 ** This file may be used under the terms of the GNU General Public
** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file.  Alternatively you may (at
** your option) use any later version of the GNU General Public
** License if such license has been publicly approved by Trolltech ASA
** (or its successors, if any) and the KDE Free Qt Foundation. In
** addition, as a special exception, Trolltech gives you certain
** additional rights. These rights are described in the Trolltech GPL
** Exception version 1.2, which can be found at
** http://www.trolltech.com/products/qt/gplexception/ and in the file
** GPL_EXCEPTION.txt in this package.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/. If
** you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at [email protected].
**
** In addition, as a special exception, Trolltech, as the sole
** copyright holder for Qt Designer, grants users of the Qt/Eclipse
** Integration plug-in the right for the Qt/Eclipse Integration to
** link to functionality provided by Qt Designer and its related
** libraries.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly
** granted herein.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ****************************************************************************/

 #include <QtGui>

 #include "stareditor.h"
 #include "starrating.h"

 StarEditor::StarEditor(QWidget *parent)
     : QWidget(parent)
 {
     setMouseTracking(true);
     setAutoFillBackground(true);
 }

 QSize StarEditor::sizeHint() const
 {
     return myStarRating.sizeHint();
 }

 void StarEditor::paintEvent(QPaintEvent *)
 {
     QPainter painter(this);
     myStarRating.paint(&painter, rect(), this->palette(),
                        StarRating::Editable);
 }

 void StarEditor::mouseMoveEvent(QMouseEvent *event)
 {
     int star = starAtPosition(event->x());

     if (star != myStarRating.starCount() && star != -1) {
         myStarRating.setStarCount(star);
         update();
     }
 }

 void StarEditor::mouseReleaseEvent(QMouseEvent * /* event */)
 {
     emit editingFinished();
 }

 int StarEditor::starAtPosition(int x)
 {
     int star = (x / (myStarRating.sizeHint().width()
                      / myStarRating.maxStarCount())) + 1;
     if (star <= 0 || star > myStarRating.maxStarCount())
         return -1;

     return star;
 }