Working, but drawing is not perfect

companion/src/modeledit/mixerslist.cpp

@@ -8,8 +8,10 @@ MixersList::MixersList(QWidget *parent, bool expo) :
     setContextMenuPolicy(Qt::CustomContextMenu);
     setSelectionMode(QAbstractItemView::SingleSelection);
     setDragEnabled(true);
-    setAcceptDrops(true);
+    //setDragDropMode(QAbstractItemView::InternalMove);
+    viewport()->setAcceptDrops(true);
     setDropIndicatorShown(true);
+    setItemDelegate(new MixersDelegate(parent));
 }
 
 void MixersList::keyPressEvent(QKeyEvent *event)
@@ -19,6 +21,7 @@ void MixersList::keyPressEvent(QKeyEvent *event)
 
 bool MixersList::dropMimeData( int index, const QMimeData * data, Qt::DropAction action )
 {    
+    qDebug() << "MixersList::dropMimeData() " << index << data->formats();
     QByteArray dropData = data->data("application/x-qabstractitemmodeldatalist");
     QDataStream stream(&dropData, QIODevice::ReadOnly);
     QByteArray qba;
@@ -31,8 +34,8 @@ bool MixersList::dropMimeData( int index, const QMimeData * data, Qt::DropAction
         QList<QVariant> lsVars;
         lsVars = v.values();
         QString itemString = lsVars.at(0).toString();
-        qba.append(lsVars.at(1).toByteArray().mid(1));
-
+        qba.append(lsVars.last().toByteArray().mid(1));
+        qDebug() << "MixersList::dropMimeData() added data " << lsVars;
         if(itemString.isEmpty()) {};
     }
 
@@ -52,3 +55,130 @@ bool MixersList::dropMimeData( int index, const QMimeData * data, Qt::DropAction
 }
 
 
+void MixersList::mousePressEvent(QMouseEvent *event)
+{
+    qDebug() << "MixersList::mousePressEvent" ;
+    QListWidgetItem *item = currentItem();
+    if (item) {
+        qDebug() << "MixersList::mousePressEvent" << item->text();    
+    }
+    if (event->button() == Qt::LeftButton)
+    {
+        //startPos = event->pos();
+    }
+    QListWidget::mousePressEvent(event);
+ 
+}
+
+#define QFIXED_MAX (INT_MAX/256)
+
+QRect __textLayoutBounds(const QStyleOptionViewItemV2 &option)
+{
+    QRect rect = option.rect;
+    const bool wrapText = option.features & QStyleOptionViewItemV2::WrapText;
+    switch (option.decorationPosition) {
+    case QStyleOptionViewItem::Left:
+    case QStyleOptionViewItem::Right:
+        rect.setWidth(wrapText && rect.isValid() ? rect.width() : (QFIXED_MAX));
+        break;
+    case QStyleOptionViewItem::Top:
+    case QStyleOptionViewItem::Bottom:
+        rect.setWidth(wrapText ? option.decorationSize.width() : (QFIXED_MAX));
+        break;
+    }
+
+    return rect;
+}
+
+void MixersDelegate::paint(QPainter *painter,
+                          const QStyleOptionViewItem &option,
+                          const QModelIndex &index) const
+{
+    //Q_D(const QItemDelegate);
+    Q_ASSERT(index.isValid());
+
+    QStyleOptionViewItemV4 opt = setOptions(index, option);
+    //qDebug() << "MixersDelegate::paint" << opt.rect;
+
+    const QStyleOptionViewItemV2 *v2 = qstyleoption_cast<const QStyleOptionViewItemV2 *>(&option);
+    opt.features = v2 ? v2->features
+                    : QStyleOptionViewItemV2::ViewItemFeatures(QStyleOptionViewItemV2::None);
+    const QStyleOptionViewItemV3 *v3 = qstyleoption_cast<const QStyleOptionViewItemV3 *>(&option);
+    opt.locale = v3 ? v3->locale : QLocale();
+    opt.widget = v3 ? v3->widget : 0;
+
+    // prepare
+    painter->save();
+    if (false /*d->clipPainting*/)
+        painter->setClipRect(opt.rect);
+
+    // get the data and the rectangles
+
+    QVariant value;
+
+
+    QString text;
+    QRect displayRect;
+    value = index.data(Qt::DisplayRole);
+    if (value.isValid() && !value.isNull()) {
+        text = value.toString();
+        displayRect = textRectangle(painter, __textLayoutBounds(opt), opt.font, text);
+    }
+
+    QRect checkRect;
+    Qt::CheckState checkState = Qt::Unchecked;
+    value = index.data(Qt::CheckStateRole);
+    if (value.isValid()) {
+        checkState = static_cast<Qt::CheckState>(value.toInt());
+        checkRect = check(opt, opt.rect, value);
+    }
+
+    // do the layout
+    QRect dummy;
+    
+
+
+    doLayout(opt, &checkRect, &dummy, &displayRect, false);
+
+    // draw the item
+
+    drawBackground(painter, opt, index);
+    drawCheck(painter, opt, checkRect, checkState);
+    //drawDecoration(painter, opt, decorationRect, pixmap);
+    drawDisplay(painter, opt, displayRect, text);
+    drawFocus(painter, opt, displayRect);
+
+    // done
+    painter->restore();
+}
+
+void MixersDelegate::drawDisplay(QPainter *painter, const QStyleOptionViewItem &option,
+                                const QRect &rect, const QString &text) const
+{
+
+    painter->save();
+
+    QTextDocument doc;
+    doc.setHtml(text);
+    doc.setDefaultFont(option.font);
+
+    painter->translate(rect.left(), rect.top());
+    QRect clip(0, 0, rect.width(), rect.height());
+    doc.drawContents(painter, clip);
+
+    painter->restore();
+}
+
+
+
+// QSize MixersDelegate::sizeHint ( const QStyleOptionViewItem & option, const QModelIndex & index ) const
+// {
+//     QStyleOptionViewItemV4 options = option;
+//     initStyleOption(&options, index);
+
+//     QTextDocument doc;
+//     doc.setHtml(options.text);
+//     doc.setDefaultFont(option.font);
+//     doc.setTextWidth(options.rect.width());
+//     return QSize(doc.idealWidth(), doc.size().height());
+// }