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 example classes of the Qt Toolkit.
 **
 ** Licensees holding a valid Qt License Agreement may use this file in
 ** accordance with the rights, responsibilities and obligations
 ** contained therein.  Please consult your licensing agreement or
 ** contact sales@trolltech.com if any conditions of this licensing
 ** agreement are not clear to you.
 **
 ** Further information about Qt licensing is available at:
 ** http://www.trolltech.com/products/qt/licensing.html or by
 ** contacting info@trolltech.com.
 **
 ** 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;
 }


Copyright © 2008 Trolltech Trademarks
Qt 4.3.5