First implementation

cpp/window/TraceWindow/BaseTraceViewModel.cpp

@@ -0,0 +1,271 @@
+/*
+
+  Copyright (c) 2015, 2016 Hubert Denkmair <hubert@denkmair.de>
+
+  This file is part of cangaroo.
+
+  cangaroo is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 2 of the License, or
+  (at your option) any later version.
+
+  cangaroo is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with cangaroo.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include "BaseTraceViewModel.h"
+
+#include <QDateTime>
+#include <QColor>
+
+#include <core/Backend.h>
+#include <core/CanTrace.h>
+#include <core/CanMessage.h>
+#include <core/CanDbMessage.h>
+
+BaseTraceViewModel::BaseTraceViewModel(Backend &backend)
+{
+    _backend = &backend;
+}
+
+int BaseTraceViewModel::columnCount(const QModelIndex &parent) const
+{
+    (void) parent;
+    return column_count;
+}
+
+QVariant BaseTraceViewModel::headerData(int section, Qt::Orientation orientation, int role) const
+{
+    if (role == Qt::DisplayRole) {
+
+        if (orientation == Qt::Horizontal) {
+            switch (section) {
+                case column_timestamp:
+                    return QString("Timestamp");
+                case column_channel:
+                    return QString("Channel");
+                case column_direction:
+                    return QString("Rx/Tx");
+                case column_canid:
+                    return QString("CAN ID");
+                case column_sender:
+                    return QString("Sender");
+                case column_name:
+                    return QString("Name");
+                case column_dlc:
+                    return QString("DLC");
+                case column_data:
+                    return QString("Data");
+                case column_comment:
+                    return QString("Comment");
+            }
+        }
+
+    }
+    return QVariant();
+}
+
+
+QVariant BaseTraceViewModel::data(const QModelIndex &index, int role) const
+{
+    switch (role) {
+        case Qt::DisplayRole:
+            return data_DisplayRole(index, role);
+        case Qt::TextAlignmentRole:
+            return data_TextAlignmentRole(index, role);
+        case Qt::TextColorRole:
+            return data_TextColorRole(index, role);
+        default:
+            return QVariant();
+    }
+}
+
+Backend *BaseTraceViewModel::backend() const
+{
+    return _backend;
+}
+
+CanTrace *BaseTraceViewModel::trace() const
+{
+    return _backend->getTrace();
+}
+
+timestamp_mode_t BaseTraceViewModel::timestampMode() const
+{
+    return _timestampMode;
+}
+
+void BaseTraceViewModel::setTimestampMode(timestamp_mode_t timestampMode)
+{
+    _timestampMode = timestampMode;
+}
+
+QVariant BaseTraceViewModel::formatTimestamp(timestamp_mode_t mode, const CanMessage &currentMsg, const CanMessage &lastMsg) const
+{
+
+    if (mode==timestamp_mode_delta) {
+
+        double t_current = currentMsg.getFloatTimestamp();
+        double t_last = lastMsg.getFloatTimestamp();
+        if (t_last==0) {
+            return QVariant();
+        } else {
+            return QString().sprintf("%.04lf", t_current-t_last);
+        }
+
+    } else if (mode==timestamp_mode_absolute) {
+
+        return currentMsg.getDateTime().toString("hh:mm:ss.zzz");
+
+    } else if (mode==timestamp_mode_relative) {
+
+        double t_current = currentMsg.getFloatTimestamp();
+        return QString().sprintf("%.04lf", t_current - backend()->getTimestampAtMeasurementStart());
+
+    }
+
+    return QVariant();
+}
+
+QVariant BaseTraceViewModel::data_DisplayRole(const QModelIndex &index, int role) const
+{
+    (void) index;
+    (void) role;
+    return QVariant();
+}
+
+QVariant BaseTraceViewModel::data_DisplayRole_Message(const QModelIndex &index, int role, const CanMessage &currentMsg, const CanMessage &lastMsg) const
+{
+    (void) role;
+    CanDbMessage *dbmsg = backend()->findDbMessage(currentMsg);
+
+    switch (index.column()) {
+
+        case column_timestamp:
+            return formatTimestamp(_timestampMode, currentMsg, lastMsg);
+
+        case column_channel:
+            return backend()->getInterfaceName(currentMsg.getInterfaceId());
+
+        case column_direction:
+            return "rx";
+
+        case column_canid:
+            return currentMsg.getIdString();
+
+        case column_name:
+            return (dbmsg) ? dbmsg->getName() : "";
+
+        case column_sender:
+            return (dbmsg) ? dbmsg->getSender()->name() : "";
+
+        case column_dlc:
+            return currentMsg.getLength();
+
+        case column_data:
+            return currentMsg.getDataHexString();
+
+        case column_comment:
+            return (dbmsg) ? dbmsg->getComment() : "";
+
+        default:
+            return QVariant();
+
+    }
+}
+
+QVariant BaseTraceViewModel::data_DisplayRole_Signal(const QModelIndex &index, int role, const CanMessage &msg) const
+{
+    (void) role;
+    uint64_t raw_data;
+    QString value_name;
+    QString unit;
+
+    CanDbMessage *dbmsg = backend()->findDbMessage(msg);
+    if (!dbmsg) { return QVariant(); }
+
+    CanDbSignal *dbsignal = dbmsg->getSignal(index.row());
+    if (!dbsignal) { return QVariant(); }
+
+    switch (index.column()) {
+
+        case column_name:
+            return dbsignal->name();
+
+        case column_data:
+
+            if (dbsignal->isPresentInMessage(msg)) {
+                raw_data = dbsignal->extractRawDataFromMessage(msg);
+            } else {
+                if (!trace()->getMuxedSignalFromCache(dbsignal, &raw_data)) {
+                    return QVariant();
+                }
+            }
+
+            value_name = dbsignal->getValueName(raw_data);
+            if (value_name.isEmpty()) {
+                unit = dbsignal->getUnit();
+                if (unit.isEmpty()) {
+                    return dbsignal->convertRawValueToPhysical(raw_data);
+                } else {
+                    return QString("%1 %2").arg(dbsignal->convertRawValueToPhysical(raw_data)).arg(unit);
+                }
+            } else {
+                return QString("%1 - %2").arg(raw_data).arg(value_name);
+            }
+
+        case column_comment:
+            return dbsignal->comment().replace('\n', ' ');
+
+        default:
+            return QVariant();
+
+    }
+}
+
+QVariant BaseTraceViewModel::data_TextAlignmentRole(const QModelIndex &index, int role) const
+{
+    (void) role;
+    switch (index.column()) {
+        case column_timestamp: return Qt::AlignRight + Qt::AlignVCenter;
+        case column_channel: return Qt::AlignCenter + Qt::AlignVCenter;
+        case column_direction: return Qt::AlignCenter + Qt::AlignVCenter;
+        case column_canid: return Qt::AlignRight + Qt::AlignVCenter;
+        case column_sender: return Qt::AlignLeft + Qt::AlignVCenter;
+        case column_name: return Qt::AlignLeft + Qt::AlignVCenter;
+        case column_dlc: return Qt::AlignCenter + Qt::AlignVCenter;
+        case column_data: return Qt::AlignLeft + Qt::AlignVCenter;
+        case column_comment: return Qt::AlignLeft + Qt::AlignVCenter;
+        default: return QVariant();
+    }
+}
+
+QVariant BaseTraceViewModel::data_TextColorRole(const QModelIndex &index, int role) const
+{
+    (void) index;
+    (void) role;
+    return QVariant();
+}
+
+QVariant BaseTraceViewModel::data_TextColorRole_Signal(const QModelIndex &index, int role, const CanMessage &msg) const
+{
+    (void) role;
+
+    CanDbMessage *dbmsg = backend()->findDbMessage(msg);
+    if (!dbmsg) { return QVariant(); }
+
+    CanDbSignal *dbsignal = dbmsg->getSignal(index.row());
+    if (!dbsignal) { return QVariant(); }
+
+    if (dbsignal->isPresentInMessage(msg)) {
+        return QVariant(); // default text color
+    } else {
+        return QVariant::fromValue(QColor(200,200,200));
+    }
+}