# HG changeset patch
# User Hasan Yavuz ÖZDERYA <hy@ozderya.net>
# Date 2015-09-21 12:42:34
# Node ID aa3c57d8443c6dba890088cbfac596df6a823ad9
# Parent  1ab6199146580076452a136344bfeee29eea9235

implemented snapshot export

diff --git a/snapshotview.cpp b/snapshotview.cpp
--- a/snapshotview.cpp
+++ b/snapshotview.cpp
@@ -1,6 +1,8 @@
 #include "snapshotview.h"
 #include "ui_snapshotview.h"
 
+#include <QSaveFile>
+
 SnapShotView::SnapShotView(QWidget *parent, SnapShot* snapShot) :
     QMainWindow(parent),
     ui(new Ui::SnapShotView),
@@ -27,6 +29,9 @@ SnapShotView::SnapShotView(QWidget *pare
     renameDialog.setLabelText("Enter new name:");
     connect(ui->actionRename, &QAction::triggered,
             this, &SnapShotView::showRenameDialog);
+
+    connect(ui->actionExport, &QAction::triggered,
+            this, &SnapShotView::save);
 }
 
 SnapShotView::~SnapShotView()
@@ -55,3 +60,47 @@ void SnapShotView::renameSnapshot(QStrin
     _snapShot->setName(name);
     setWindowTitle(name);
 }
+
+void SnapShotView::save()
+{
+    QString fileName = QFileDialog::getSaveFileName(this, tr("Export CSV File"));
+
+    // TODO: remove code duplication (MainWindow::onExportCsv)
+    QSaveFile file(fileName);
+
+    if (file.open(QIODevice::WriteOnly | QIODevice::Text))
+    {
+        QTextStream fileStream(&file);
+
+        unsigned numOfChannels = _snapShot->data.size();
+        unsigned numOfSamples = _snapShot->data[0].size();
+
+        // print header
+        for (unsigned int ci = 0; ci < numOfChannels; ci++)
+        {
+            fileStream << "Channel " << ci;
+            if (ci != numOfChannels-1) fileStream << ",";
+        }
+        fileStream << '\n';
+
+        // print rows
+        for (unsigned int i = 0; i < numOfSamples; i++)
+        {
+            for (unsigned int ci = 0; ci < numOfChannels; ci++)
+            {
+                fileStream << _snapShot->data[ci][i].y();
+                if (ci != numOfChannels-1) fileStream << ",";
+            }
+            fileStream << '\n';
+        }
+
+        if (!file.commit())
+        {
+            qCritical() << "File save error during snapshot save: " << file.error();
+        }
+    }
+    else
+    {
+        qCritical() << "File open error during snapshot save: " << file.error();
+    }
+}
diff --git a/snapshotview.h b/snapshotview.h
--- a/snapshotview.h
+++ b/snapshotview.h
@@ -3,6 +3,7 @@
 
 #include <QMainWindow>
 #include <QInputDialog>
+#include <QFileDialog>
 #include <QVector>
 #include <QPointF>
 #include <QPen>
@@ -37,6 +38,7 @@ private:
 private slots:
     void showRenameDialog();
     void renameSnapshot(QString name);
+    void save();
 };
 
 #endif // SNAPSHOTVIEW_H
diff --git a/snapshotview.ui b/snapshotview.ui
--- a/snapshotview.ui
+++ b/snapshotview.ui
@@ -34,7 +34,7 @@
      <string>Snapshot</string>
     </property>
     <addaction name="actionRename"/>
-    <addaction name="actionExportCSV"/>
+    <addaction name="actionExport"/>
    </widget>
    <widget class="QMenu" name="menuView">
     <property name="title">
@@ -44,10 +44,13 @@
    <addaction name="menuSnapshot"/>
    <addaction name="menuView"/>
   </widget>
-  <action name="actionExportCSV">
+  <action name="actionExport">
    <property name="text">
     <string>Export CSV</string>
    </property>
+   <property name="toolTip">
+    <string>Save snapshot as CSV file</string>
+   </property>
   </action>
   <action name="actionRename">
    <property name="text">