KD Chart 2: KDChartDiagramObserver.cpp Source File

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# KDChartDiagramObserver.cpp

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    00001 /* -*- Mode: C++ -*-
    00002    KDChart - a multi-platform charting engine
    00003    */
    00004
    00005 /****************************************************************************
    00006  ** Copyright (C) 2001-2006 Klarävdalens Datakonsult AB.  All rights reserved.
    00007  **
    00008  ** This file is part of the KD Chart library.
    00009  **
    00010  ** This file may be distributed and/or modified under the terms of the
    00011  ** GNU General Public License version 2 as published by the Free Software
    00012  ** Foundation and appearing in the file LICENSE.GPL included in the
    00013  ** packaging of this file.
    00014  **
    00015  ** Licensees holding valid commercial KD Chart licenses may use this file in
    00016  ** accordance with the KD Chart Commercial License Agreement provided with
    00017  ** the Software.
    00018  **
    00019  ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    00020  ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    00021  **
    00022  ** See http://www.kdab.net/kdchart for
    00023  **   information about KD Chart Commercial License Agreements.
    00024  **
    00025  ** Contact info@kdab.net if any conditions of this
    00026  ** licensing are not clear to you.
    00027  **
    00028  **********************************************************************/
    00029
    00030 #include <KDChartAbstractDiagram.h>
    00031 #include <KDChartDiagramObserver.h>
    00032 #include <KDChartAttributesModel.h>
    00033
    00034 #include <KDABLibFakes>
    00035
    00036 #include <QDebug>
    00037
    00038 using namespace KDChart;
    00039
    00040 DiagramObserver::DiagramObserver( AbstractDiagram * diagram, QObject* parent )
    00041     : QObject( parent ), m_diagram( diagram )
    00042 {
    00043     if ( m_diagram ) {
    00044         connect( m_diagram, SIGNAL(destroyed(QObject*)), SLOT(slotDestroyed(QObject*)));
    00045         connect( m_diagram, SIGNAL(modelsChanged()), SLOT(slotModelsChanged()));
    00046     }
    00047     init();
    00048 }
    00049
    00050 DiagramObserver::~DiagramObserver()
    00051 {
    00052 }
    00053
    00054 const AbstractDiagram* DiagramObserver::diagram() const
    00055 {
    00056     return m_diagram;
    00057 }
    00058
    00059 AbstractDiagram* DiagramObserver::diagram()
    00060 {
    00061     return m_diagram;
    00062 }
    00063
    00064
    00065 void DiagramObserver::init()
    00066 {
    00067     if ( !m_diagram )
    00068         return;
    00069
    00070     if ( m_model )
    00071         disconnect(m_model);
    00072
    00073     if ( m_attributesmodel )
    00074         disconnect(m_attributesmodel);
    00075
    00076     connect( m_diagram, SIGNAL(dataHidden()), SLOT(slotDataHidden()) );
    00077
    00078     if( m_diagram->model() ){
    00079         connect( m_diagram->model(), SIGNAL(dataChanged(QModelIndex,QModelIndex)),
    00080                  SLOT(slotDataChanged(QModelIndex,QModelIndex)));
    00081         connect( m_diagram->model(), SIGNAL(headerDataChanged(Qt::Orientation,int,int)),
    00082                  SLOT(slotHeaderDataChanged(Qt::Orientation,int,int)));
    00083     }
    00084
    00085     if( m_diagram->attributesModel() )
    00086         connect( m_diagram->attributesModel(), SIGNAL(attributesChanged(QModelIndex,QModelIndex)),
    00087                  SLOT(slotAttributesChanged(QModelIndex,QModelIndex)));
    00088     m_model = m_diagram->model();
    00089     m_attributesmodel = m_diagram->attributesModel();
    00090 }
    00091
    00092
    00093 void DiagramObserver::slotDestroyed(QObject*)
    00094 {
    00095     //qDebug() << this << "emits signal\n"
    00096     //        "    emit diagramDestroyed(" <<  m_diagram << ")";
    00097     AbstractDiagram* diag = m_diagram;
    00098     disconnect( m_diagram, 0, this, 0);
    00099     m_diagram = 0;
    00100     emit diagramDestroyed( diag );
    00101 }
    00102
    00103 void DiagramObserver::slotModelsChanged()
    00104 {
    00105     init();
    00106     slotDataChanged();
    00107     slotAttributesChanged();
    00108 }
    00109
    00110 void DiagramObserver::slotHeaderDataChanged(Qt::Orientation,int,int)
    00111 {
    00112     //qDebug() << "DiagramObserver::slotHeaderDataChanged()";
    00113     emit diagramDataChanged( m_diagram );
    00114 }
    00115
    00116 void DiagramObserver::slotDataChanged(QModelIndex,QModelIndex)
    00117 {
    00118     slotDataChanged();
    00119 }
    00120
    00121 void DiagramObserver::slotDataChanged()
    00122 {
    00123     //qDebug() << "DiagramObserver::slotDataChanged()";
    00124     emit diagramDataChanged( m_diagram );
    00125 }
    00126
    00127 void DiagramObserver::slotDataHidden()
    00128 {
    00129     //qDebug() << "DiagramObserver::slotDataHidden()";
    00130     emit diagramDataHidden( m_diagram );
    00131 }
    00132
    00133 void DiagramObserver::slotAttributesChanged(QModelIndex,QModelIndex)
    00134 {
    00135     slotAttributesChanged();
    00136 }
    00137
    00138 void DiagramObserver::slotAttributesChanged()
    00139 {
    00140     //qDebug() << "DiagramObserver::slotAttributesChanged()";
    00141     emit diagramAttributesChanged( m_diagram );
    00142 }
    00143