New custom model that somewhat speeds up loading of canbus frame but it's still dog slow.

2015-04-27 18:31:30 -04:00
parent 6fc8cf73c7
commit 1deff8af58
7 changed files with 164 additions and 53 deletions
@@ -0,0 +1,111 @@
+#include "canframemodel.h"
+
+int CANFrameModel::rowCount(const QModelIndex &parent) const
+{
+    return frames.count();
+}
+
+int CANFrameModel::columnCount(const QModelIndex &index) const
+{
+    return 6;
+}
+
+CANFrameModel::CANFrameModel(QObject *parent)
+    : QAbstractTableModel(parent)
+{
+    frames.reserve(100000); //ask for at least 100,000 entries. This gives good performance up to this limit
+}
+
+QVariant CANFrameModel::data(const QModelIndex &index, int role) const
+{
+    QString tempString;
+    if (!index.isValid())
+        return QVariant();
+
+    if (index.row() >= frames.count())
+        return QVariant();
+
+    if (role == Qt::DisplayRole) {
+        CANFrame thisFrame = frames.at(index.row());
+        switch (index.column())
+        {
+        case 0: //timestamp
+
+            return QString::number(thisFrame.timestamp);
+            break;
+        case 1: //id
+            return QString::number(thisFrame.ID, 16);
+            break;
+        case 2: //ext
+            return QString::number(thisFrame.extended);
+            break;
+        case 3: //bus
+            return QString::number(thisFrame.bus);
+            break;
+        case 4: //len
+            return QString::number(thisFrame.len);
+            break;
+        case 5: //data
+            for (int i = 0; i < thisFrame.len; i++)
+            {
+                tempString.append(QString::number(thisFrame.data[i], 16));
+                tempString.append(" ");
+            }
+            return tempString;
+            break;
+        default:
+            return QVariant();
+        }
+    }
+    else
+        return QVariant();
+}
+
+QVariant CANFrameModel::headerData(int section, Qt::Orientation orientation,
+                                     int role) const
+{
+    if (role != Qt::DisplayRole)
+        return QVariant();
+
+    if (orientation == Qt::Horizontal)
+    {
+        switch (section)
+        {
+        case 0:
+            return QString(tr("Timestamp"));
+            break;
+        case 1:
+            return QString(tr("ID"));
+            break;
+        case 2:
+            return QString(tr("Ext"));
+            break;
+        case 3:
+            return QString(tr("Bus"));
+            break;
+        case 4:
+            return QString(tr("Len"));
+            break;
+        case 5:
+            return QString(tr("Data"));
+            break;
+        }
+    }
+
+    else
+        return QString::number(section);
+}
+
+void CANFrameModel::addFrame(CANFrame &frame)
+{
+    beginInsertRows(QModelIndex(), frames.count() + 1, frames.count() + 1);
+    frames.append(frame);
+    endInsertRows();
+}
+
+void CANFrameModel::clearFrames()
+{
+    beginRemoveRows(QModelIndex(), 0, frames.count());
+    frames.clear();
+    endRemoveRows();
+}