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

stareditor.cpp Example File
itemviews/stardelegate/stareditor.cpp

 /****************************************************************************
 **
 ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
 ** Contact: Qt Software Information (qt-info@nokia.com)
 **
 ** This file is part of the example classes of the Qt Toolkit.
 **
 ** 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 General Public License Usage
 ** Alternatively, 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 file LICENSE.GPL included in
 ** the packaging of this file.  Please review the following information
 ** to ensure GNU General Public Licensing requirements will be met:
 ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
 ** http://www.gnu.org/copyleft/gpl.html.  In addition, as a special
 ** exception, Nokia gives you certain additional rights. These rights
 ** are described in the Nokia Qt GPL Exception version 1.3, included in
 ** the file GPL_EXCEPTION.txt in this package.
 **
 ** Qt for Windows(R) Licensees
 ** As a special exception, Nokia, 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.
 **
 ** If you are unsure which license is appropriate for your use, please
 ** contact the sales department at qt-sales@nokia.com.
 **
 ****************************************************************************/

 #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;
 }