Add preliminary version of a new data visualization idea in the

sniffer window.

SavvyCAN.pro

@@ -65,7 +65,8 @@ SOURCES += main.cpp\
     jsedit.cpp \
     frameplaybackobject.cpp \
     helpwindow.cpp \
-    blfhandler.cpp
+    blfhandler.cpp \
+    re/sniffer/SnifferDelegate.cpp
 
 HEADERS  += mainwindow.h \
     can_structs.h \
@@ -121,7 +122,8 @@ HEADERS  += mainwindow.h \
     jsedit.h \
     frameplaybackobject.h \
     helpwindow.h \
-    blfhandler.h
+    blfhandler.h \
+    re/sniffer/SnifferDelegate.h
 
 FORMS    += ui/candatagrid.ui \
     ui/connectionwindow.ui \

re/sniffer/SnifferDelegate.cpp

@@ -0,0 +1,70 @@
+#include "SnifferDelegate.h"
+#include <QPainter>
+#include <QDebug>
+#include "utility.h"
+#include "re/sniffer/snifferitem.h"
+
+SnifferDelegate::SnifferDelegate(QWidget *parent) : QItemDelegate(parent)
+{
+    blackBrush = QBrush(Qt::black);
+    whiteBrush = QBrush(Qt::white);
+    //redBrush = QBrush(Qt::red);
+    //greenBrush = QBrush(Qt::green);
+    //grayBrush = QBrush(QColor(230,230,230));
+    mainFont.setPointSize(10);
+    mainFontInfo = new QFontInfo(mainFont);
+}
+
+void SnifferDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
+{
+    //qDebug() << "SnifferDelegate Paint Event";
+
+    if (index.column() < 2)
+    {
+        QItemDelegate::paint(painter, option, index);
+        return;
+    }
+
+    if (index.column() > 9) return;
+
+    int x, y;
+    SnifferItem *item = static_cast<SnifferItem*>(index.internalPointer());
+    int val = item->getData(index.column() - 2);
+    if (val < 0) return;
+
+    QRect viewport = option.rect;
+
+    int xSpan = viewport.right() - viewport.left();
+    int ySpan = viewport.bottom() - viewport.top();
+
+    //qDebug() << "XSpan" << xSpan << " YSpan " << ySpan;
+
+    int xSector = xSpan / 8;
+
+    painter->setPen(QPen(Qt::black));
+    painter->setFont(mainFont);
+
+    for (x = 0; x < 8; x++)
+    {
+        if (val & (1 << x))
+        {
+            painter->setBrush(blackBrush);
+        }
+        else
+        {
+            painter->setBrush(whiteBrush);
+        }
+        painter->drawRect(viewport.left() + x * xSector, viewport.top(), xSector, xSector);
+    }
+
+    painter->drawText(QRect(viewport.left(), viewport.top() + xSector, xSpan, mainFontInfo->pixelSize()), Qt::AlignCenter, Utility::formatNumber(val));
+}
+
+QSize SnifferDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
+{
+    QSize origSize = QItemDelegate::sizeHint(option, index);
+    origSize.setHeight(origSize.height() * 2.0);
+    return origSize;
+}
+
+

re/sniffer/SnifferDelegate.h

@@ -0,0 +1,24 @@
+#ifndef SNIFFERDELEGATE_H
+#define SNIFFERDELEGATE_H
+
+#include <QItemDelegate>
+
+class SnifferDelegate : public QItemDelegate
+{
+    Q_OBJECT
+public:
+    explicit SnifferDelegate(QWidget *parent = nullptr);
+    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
+    QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const;
+
+signals:
+
+public slots:
+
+private:
+    QBrush blackBrush, whiteBrush;//, redBrush, greenBrush, grayBrush;
+    QFont mainFont;
+    QFontInfo* mainFontInfo;
+};
+
+#endif

re/sniffer/sniffermodel.cpp

@@ -1,7 +1,7 @@
 #include <QDebug>
 #include "sniffermodel.h"
 #include "snifferwindow.h"
-
+#include "SnifferDelegate.h"
 
 SnifferModel::SnifferModel(QObject *parent)
     : QAbstractItemModel(parent),
@@ -61,8 +61,10 @@ QVariant SnifferModel::data(const QModelIndex &index, int role) const
             {
                 int data = item->getData(col-tc::DATA_0);
                 if(data >= 0)
+                {
                     return QString("%1").arg(data, 2, 16, QLatin1Char('0')).toUpper();
                 }
+            }
             break;
         }
         case Qt::ForegroundRole:

re/sniffer/snifferwindow.cpp

@@ -4,6 +4,7 @@
 #include "ui_snifferwindow.h"
 #include "helpwindow.h"
 #include "connections/canconmanager.h"
+#include "SnifferDelegate.h"
 
 SnifferWindow::SnifferWindow(QWidget *parent) :
     QDialog(parent),
@@ -19,8 +20,10 @@ SnifferWindow::SnifferWindow(QWidget *parent) :
     ui->treeView->setColumnWidth(tc::ID, 50);
     ui->treeView->setColumnWidth(tc::LAST, 1);
     for(int i=tc::DATA_0 ; i<=tc::DATA_7 ; i++)
-        ui->treeView->setColumnWidth(i, 30);
+        ui->treeView->setColumnWidth(i, 95);
+    ui->treeView->setUniformRowHeights(true);
     ui->treeView->header()->setDefaultAlignment(Qt::AlignCenter);
+    ui->treeView->setItemDelegate(new SnifferDelegate());
 
     /* activate sorting */
     ui->listWidget->setSortingEnabled(true);

ui/snifferwindow.ui

@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>710</width>
+    <width>1097</width>
     <height>752</height>
    </rect>
   </property>