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Thread: Qt trying to render QTextEdit in itemdelegate , but can’t see it

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  1. 11th January 2012, 13:05 #1
    umen
    umen is offline Intermediate user
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    Default Qt trying to render QTextEdit in itemdelegate , but can’t see it

    trying to render QTextEditin item delegate , but can’t see it hi I have item deleget that I use as item in ListView . I try to set QTextEditin it , but I can’t seam to set it right , it compiles fine
    but in the end I can't see the QTextEdit
    here is my code ( taken from here ref )
    what do i do wrong here ? dont i need to point it somewhere ?

    Qt Code: 
    1. const qreal PrettyItemDelegate::THUMB_HEIGHT = 50.0;
    2. const qreal PrettyItemDelegate::THUMB_WIDTH = 50.0;
    3. const qreal PrettyItemDelegate::PADDING = 10.0;
    4. const qreal PrettyItemDelegate::ITEM_HEIGHT = THUMB_HEIGHT+20;
    5. const qreal PrettyItemDelegate::ITEM_WIDTH = THUMB_WIDTH+20;
    6.  
    7.  
    8. PrettyItemDelegate::PrettyItemDelegate(QObject* parent)
    9.     : QStyledItemDelegate(parent), downloadInfo(true) {
    10.     boldFont.setBold(true);
    11.     smallerBoldFont = FontUtils::smallBold();
    12.     smallerFont = FontUtils::small();
    13.  
    14.  
    15. }
    16.  
    17.  
    18.  QWidget *PrettyItemDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &/* option */, const QModelIndex &/* index */) const
    19. {
    20.   QTextEdit *editor = new QTextEdit(parent);
    21.   editor->setGeometry(QRect(40, 30, 401, 31));
    22.   editor->setLayoutDirection(Qt::LeftToRight);
    23.   //editor->setAutoFillBackground(false);
    24.   //editor->setStyleSheet(QString::fromUtf8("background-color: transparent;;"));
    25.   editor->setLocale(QLocale(QLocale::English, QLocale::UnitedStates));
    26.   editor->setFrameShape(QFrame::WinPanel);
    27.  // editor->setFrameShadow(QFrame::Plain);
    28.   editor->setLineWidth(2);
    29.   editor->setReadOnly(true);
    30.   editor->setText("This is text test!!1");
    31.  
    32.   return editor;
    33. } 
    34.  
    35. void PrettyItemDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const
    36. {
    37.   QTextEdit * textEdit = static_cast<QTextEdit*>(editor);
    38.   //int value = index.model()->data(index, Qt::EditRole).toUInt();
    39.   // do somthing with the widgets 
    40. }
    41.  
    42. void PrettyItemDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
    43. {
    44.   QTextEdit * textEdit = static_cast<QTextEdit*>(editor);
    45.    //model->setData(index, comboBox->currentIndex(), Qt::EditRole);
    46. }
    47.  
    48. void PrettyItemDelegate::updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &/* index */) const
    49. {
    50.     editor->setGeometry(option.rect);
    51. }
    52.  
    53.  
    54.  
    55. PrettyItemDelegate::~PrettyItemDelegate() { }
    56.  
    57. QSize PrettyItemDelegate::sizeHint( const QStyleOptionViewItem& /*option*/,
    58.                                    const QModelIndex& /*index*/ ) const 
    59. {
    60.     return QSize( 256, THUMB_HEIGHT+20.0);
    61. }
    62.  
    63. void PrettyItemDelegate::paint( QPainter* painter,
    64.                                 const QStyleOptionViewItem& option, const QModelIndex& index ) const {
    65.  
    66.     int itemType = index.data(ItemTypeRole).toInt();
    67.     if (itemType == ItemTypeVideo) {
    68.         QApplication::style()->drawPrimitive( QStyle::PE_PanelItemViewItem, &option, painter );
    69.         paintBody( painter, option, index );
    70.    } else
    71.         QStyledItemDelegate::paint( painter, option, index );
    72.  
    73. }
    74.  
    75. void PrettyItemDelegate::paintBody( QPainter* painter,
    76.                                     const QStyleOptionViewItem& option,
    77.                                     const QModelIndex& index ) const {
    78.  
    79.     painter->save();
    80.     painter->translate( option.rect.topLeft() );
    81.  
    82.  
    83.     QRectF line(0, 0, option.rect.width(), option.rect.height());
    84.  
    85.      if (downloadInfo) line.setWidth(line.width());
    86.     painter->setClipRect(line);
    87.      // get the video metadata
    88.     const StreamItemPointer pStreamItemPointer = index.data( VideoRole ).value<StreamItemPointer>();
    89.     const StreamItem *pStreamItem = pStreamItemPointer.data();
    90.  
    91.     // thumb
    92.     if (!pStreamItem->thumbnail().isNull()) {
    93.         painter->drawImage(QRect(0, 0, THUMB_WIDTH, THUMB_HEIGHT), pStreamItem->thumbnail());
    94.      }
    95.     // media thumb
    96.     if(!pStreamItem->Mediathumbnail().isNull())
    97.     {
    98.         painter->drawImage(QRect(THUMB_WIDTH+10, 0, THUMB_WIDTH, THUMB_HEIGHT), pStreamItem->Mediathumbnail());
    99.     }
    100.     //save state
    101.      painter->save();
    102.      painter->restore();
    103.      // separator button line on each item
    104.     painter->setClipping(false);
    105.     painter->setPen(option.palette.color(QPalette::Midlight));
    106.     painter->drawLine(0, ITEM_HEIGHT-1, option.rect.width(), ITEM_HEIGHT-1);
    107.  
    108.  
    109.     painter->restore();
    110.  
    111.  
    112.  
    113. }
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    Last edited by umen; 11th January 2012 at 13:26.
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