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akonadi

agentinstancewidget.cpp

00001 /*
00002     Copyright (c) 2006-2008 Tobias Koenig <tokoe@kde.org>
00003 
00004     This library is free software; you can redistribute it and/or modify it
00005     under the terms of the GNU Library General Public License as published by
00006     the Free Software Foundation; either version 2 of the License, or (at your
00007     option) any later version.
00008 
00009     This library is distributed in the hope that it will be useful, but WITHOUT
00010     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00011     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
00012     License for more details.
00013 
00014     You should have received a copy of the GNU Library General Public License
00015     along with this library; see the file COPYING.LIB.  If not, write to the
00016     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
00017     02110-1301, USA.
00018 */
00019 
00020 #include "agentinstancewidget.h"
00021 
00022 #include "agentfilterproxymodel.h"
00023 #include "agentinstance.h"
00024 #include "agentinstancemodel.h"
00025 
00026 #include <KIcon>
00027 #include <KGlobal>
00028 
00029 #include <QtCore/QUrl>
00030 #include <QtGui/QAbstractTextDocumentLayout>
00031 #include <QtGui/QApplication>
00032 #include <QtGui/QHBoxLayout>
00033 #include <QtGui/QListView>
00034 #include <QtGui/QPainter>
00035 #include <QtGui/QTextDocument>
00036 
00037 using namespace Akonadi;
00038 
00039 struct Icons
00040 {
00041   Icons()
00042    : readyPixmap( KIcon( QLatin1String("user-online") ).pixmap( QSize( 16, 16 ) ) )
00043    , syncPixmap( KIcon( QLatin1String("network-connect") ).pixmap( QSize( 16, 16 ) ) )
00044    , errorPixmap( KIcon( QLatin1String("dialog-error") ).pixmap( QSize( 16, 16 ) ) )
00045    , offlinePixmap( KIcon( QLatin1String("network-disconnect") ).pixmap( QSize( 16, 16 ) ) )
00046   {
00047   }
00048   QPixmap readyPixmap, syncPixmap, errorPixmap, offlinePixmap;
00049 };
00050 
00051 K_GLOBAL_STATIC( Icons, s_icons )
00052 
00053 
00056 class AgentInstanceWidgetDelegate : public QAbstractItemDelegate
00057 {
00058   public:
00059     AgentInstanceWidgetDelegate( QObject *parent = 0 );
00060 
00061     virtual void paint( QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index ) const;
00062     virtual QSize sizeHint( const QStyleOptionViewItem &option, const QModelIndex &index ) const;
00063 
00064   private:
00065     void drawFocus( QPainter*, const QStyleOptionViewItem&, const QRect& ) const;
00066 
00067     QTextDocument* document( const QStyleOptionViewItem &option, const QModelIndex &index ) const;
00068 };
00069 
00073 class AgentInstanceWidget::Private
00074 {
00075   public:
00076     Private( AgentInstanceWidget *parent )
00077       : mParent( parent )
00078     {
00079     }
00080 
00081     void currentAgentInstanceChanged( const QModelIndex&, const QModelIndex& );
00082     void currentAgentInstanceDoubleClicked( const QModelIndex& );
00083 
00084     AgentInstanceWidget *mParent;
00085     QListView *mView;
00086     AgentInstanceModel *mModel;
00087     AgentFilterProxyModel *proxy;
00088 };
00089 
00090 void AgentInstanceWidget::Private::currentAgentInstanceChanged( const QModelIndex &currentIndex, const QModelIndex &previousIndex )
00091 {
00092   AgentInstance currentInstance;
00093   if ( currentIndex.isValid() )
00094     currentInstance = currentIndex.data( AgentInstanceModel::InstanceRole ).value<AgentInstance>();
00095 
00096   AgentInstance previousInstance;
00097   if ( previousIndex.isValid() )
00098     previousInstance = previousIndex.data( AgentInstanceModel::InstanceRole ).value<AgentInstance>();
00099 
00100   emit mParent->currentChanged( currentInstance, previousInstance );
00101 }
00102 
00103 void AgentInstanceWidget::Private::currentAgentInstanceDoubleClicked( const QModelIndex &currentIndex )
00104 {
00105   AgentInstance currentInstance;
00106   if ( currentIndex.isValid() )
00107     currentInstance = currentIndex.data( AgentInstanceModel::InstanceRole ).value<AgentInstance>();
00108 
00109   emit mParent->doubleClicked( currentInstance );
00110 }
00111 
00112 AgentInstanceWidget::AgentInstanceWidget( QWidget *parent )
00113   : QWidget( parent ), d( new Private( this ) )
00114 {
00115   QHBoxLayout *layout = new QHBoxLayout( this );
00116   layout->setMargin( 0 );
00117 
00118   d->mView = new QListView( this );
00119   d->mView->setContextMenuPolicy( Qt::NoContextMenu );
00120   d->mView->setItemDelegate( new AgentInstanceWidgetDelegate( d->mView ) );
00121   d->mView->setVerticalScrollMode( QAbstractItemView::ScrollPerPixel );
00122   d->mView->setAlternatingRowColors( true );
00123   layout->addWidget( d->mView );
00124 
00125   d->mModel = new AgentInstanceModel( this );
00126 
00127   d->proxy = new AgentFilterProxyModel( this );
00128   d->proxy->setSourceModel( d->mModel );
00129   d->mView->setModel( d->proxy );
00130 
00131   d->mView->selectionModel()->setCurrentIndex( d->mView->model()->index( 0, 0 ), QItemSelectionModel::Select );
00132   d->mView->scrollTo( d->mView->model()->index( 0, 0 ) );
00133 
00134   connect( d->mView->selectionModel(), SIGNAL( currentChanged( const QModelIndex&, const QModelIndex& ) ),
00135            this, SLOT( currentAgentInstanceChanged( const QModelIndex&, const QModelIndex& ) ) );
00136   connect( d->mView, SIGNAL( doubleClicked( const QModelIndex& ) ),
00137            this, SLOT( currentAgentInstanceDoubleClicked( const QModelIndex& ) ) );
00138 }
00139 
00140 AgentInstanceWidget::~AgentInstanceWidget()
00141 {
00142   delete d;
00143 }
00144 
00145 AgentInstance AgentInstanceWidget::currentAgentInstance() const
00146 {
00147   QItemSelectionModel *selectionModel = d->mView->selectionModel();
00148   if ( !selectionModel )
00149     return AgentInstance();
00150 
00151   QModelIndex index = selectionModel->currentIndex();
00152   if ( !index.isValid() )
00153     return AgentInstance();
00154 
00155   return index.data( AgentInstanceModel::InstanceRole ).value<AgentInstance>();
00156 }
00157 
00158 AgentFilterProxyModel* AgentInstanceWidget::agentFilterProxyModel() const
00159 {
00160   return d->proxy;
00161 }
00162 
00163 
00164 
00165 
00166 
00167 AgentInstanceWidgetDelegate::AgentInstanceWidgetDelegate( QObject *parent )
00168  : QAbstractItemDelegate( parent )
00169 {
00170 }
00171 
00172 QTextDocument* AgentInstanceWidgetDelegate::document( const QStyleOptionViewItem &option, const QModelIndex &index ) const
00173 {
00174   if ( !index.isValid() )
00175     return 0;
00176 
00177   const QString name = index.model()->data( index, Qt::DisplayRole ).toString();
00178   int status = index.model()->data( index, AgentInstanceModel::StatusRole ).toInt();
00179   uint progress = index.model()->data( index, AgentInstanceModel::ProgressRole ).toUInt();
00180   const QString statusMessage = index.model()->data( index, AgentInstanceModel::StatusMessageRole ).toString();
00181   const QStringList capabilities = index.model()->data( index, AgentInstanceModel::CapabilitiesRole ).toStringList();
00182 
00183   QTextDocument *document = new QTextDocument( 0 );
00184 
00185   const QVariant data = index.model()->data( index, Qt::DecorationRole );
00186   if ( data.isValid() && data.type() == QVariant::Icon ) {
00187     document->addResource( QTextDocument::ImageResource, QUrl( QLatin1String( "agent_icon" ) ),
00188                            qvariant_cast<QIcon>( data ).pixmap( QSize( 64, 64 ) ) );
00189   }
00190 
00191   if ( !index.data( AgentInstanceModel::OnlineRole ).toBool() )
00192     document->addResource( QTextDocument::ImageResource, QUrl( QLatin1String( "status_icon" ) ), s_icons->offlinePixmap );
00193   else if ( status == AgentInstance::Idle )
00194     document->addResource( QTextDocument::ImageResource, QUrl( QLatin1String( "status_icon" ) ), s_icons->readyPixmap );
00195   else if ( status == AgentInstance::Running )
00196     document->addResource( QTextDocument::ImageResource, QUrl( QLatin1String( "status_icon" ) ), s_icons->syncPixmap );
00197   else
00198     document->addResource( QTextDocument::ImageResource, QUrl( QLatin1String( "status_icon" ) ), s_icons->errorPixmap );
00199 
00200 
00201   QPalette::ColorGroup cg = option.state & QStyle::State_Enabled ? QPalette::Normal : QPalette::Disabled;
00202   if ( cg == QPalette::Normal && !(option.state & QStyle::State_Active) )
00203     cg = QPalette::Inactive;
00204 
00205   QColor textColor;
00206   if ( option.state & QStyle::State_Selected ) {
00207     textColor = option.palette.color( cg, QPalette::HighlightedText );
00208   } else {
00209     textColor = option.palette.color( cg, QPalette::Text );
00210   }
00211 
00212   QString content = QString::fromLatin1(
00213      "<html style=\"color:%1\">"
00214      "<body>"
00215      "<table>"
00216      "<tr>"
00217      "<td rowspan=\"2\"><img src=\"agent_icon\">&nbsp;&nbsp;</td>"
00218      "<td><b>%2</b></td>"
00219      "</tr>" ).arg(textColor.name().toUpper()).arg( name )
00220      + QString::fromLatin1(
00221      "<tr>"
00222      "<td><img src=\"status_icon\"/> %1 %2</td>"
00223      "</tr>" ).arg( statusMessage ).arg( status == 1 ? QString( QLatin1String( "(%1%)" ) ).arg( progress ) : QLatin1String( "" ) )
00224      + QLatin1String( "</table></body></html>" );
00225 
00226   document->setHtml( content );
00227 
00228   return document;
00229 }
00230 
00231 void AgentInstanceWidgetDelegate::paint( QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index ) const
00232 {
00233   if ( !index.isValid() )
00234     return;
00235 
00236   QTextDocument *doc = document( option, index );
00237   if ( !doc )
00238     return;
00239 
00240   painter->setRenderHint( QPainter::Antialiasing );
00241 
00242   QPen pen = painter->pen();
00243 
00244   QPalette::ColorGroup cg = option.state & QStyle::State_Enabled ? QPalette::Normal : QPalette::Disabled;
00245   if ( cg == QPalette::Normal && !(option.state & QStyle::State_Active) )
00246     cg = QPalette::Inactive;
00247 
00248   QStyleOptionViewItemV4 opt(option);
00249   opt.showDecorationSelected = true;
00250   QApplication::style()->drawPrimitive( QStyle::PE_PanelItemViewItem, &opt, painter );
00251 
00252   painter->save();
00253   painter->translate( option.rect.topLeft() );
00254   doc->drawContents( painter );
00255   delete doc;
00256   painter->restore();
00257 
00258   painter->setPen(pen);
00259 
00260   drawFocus( painter, option, option.rect );
00261 }
00262 
00263 QSize AgentInstanceWidgetDelegate::sizeHint( const QStyleOptionViewItem &option, const QModelIndex &index ) const
00264 {
00265   if ( !index.isValid() )
00266     return QSize( 0, 0 );
00267 
00268   QTextDocument *doc = document( option, index );
00269   if ( !doc )
00270     return QSize( 0, 0 );
00271 
00272   const QSize size = doc->documentLayout()->documentSize().toSize();
00273   delete doc;
00274 
00275   return size;
00276 }
00277 
00278 void AgentInstanceWidgetDelegate::drawFocus( QPainter *painter, const QStyleOptionViewItem &option, const QRect &rect ) const
00279 {
00280   if ( option.state & QStyle::State_HasFocus ) {
00281     QStyleOptionFocusRect o;
00282     o.QStyleOption::operator=( option );
00283     o.rect = rect;
00284     o.state |= QStyle::State_KeyboardFocusChange;
00285     QPalette::ColorGroup cg = (option.state & QStyle::State_Enabled) ? QPalette::Normal : QPalette::Disabled;
00286     o.backgroundColor = option.palette.color( cg, (option.state & QStyle::State_Selected)
00287                                                   ? QPalette::Highlight : QPalette::Background );
00288     QApplication::style()->drawPrimitive( QStyle::PE_FrameFocusRect, &o, painter );
00289   }
00290 }
00291 
00292 #include "agentinstancewidget.moc"

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