nicer font sizes, message box for error messaging!

pylonrecorder.cpp

@@ -25,6 +25,7 @@
 #  include <QtPrintSupport/qtprintsupportglobal.h>
 
 #  if QT_CONFIG(printdialog)
+#include <QDateTime>
 #    include <QPrintDialog>
 #  endif
 #endif
@@ -60,34 +61,51 @@ PylonRecorder::PylonRecorder(QWidget *parent)
   preassureBar = new QProgressBar(this);
   preassureBar->setRange(0, 100);
   preassureBar->setTextVisible(true);
+  preassureBar->setFixedSize(200, 25);
   QColor color = progressColor(0);
   QPalette progressPalette = preassureBar->palette();
   progressPalette.setBrush(QPalette::Highlight, QBrush(color));
   preassureBar->setPalette(progressPalette);
   QLabel *preassureLabel = new QLabel("Buffer preassure:", this);
-
+  preassureLabel->setStyleSheet("QLabel{font-size: 11px;font-family: Arial;font-weight: Bold}");
   loadBar = new QProgressBar(this);
-  loadBar->setRange(0, 1000);
+  loadBar->setRange(0, defaultBufferSize);
+  loadBar->setFixedSize(200, 25);
   QLabel *loadLabel = new QLabel("Load:", this);
+  loadLabel->setStyleSheet("QLabel{font-size: 11px;font-family: Arial;font-weight: Bold}");
 
   writingLabel = new QLabel("writing");
   writingLabel->setEnabled(false);
+  writingLabel->setStyleSheet("QLabel{font-size: 11px;font-family: Arial;}");
   grabbingLabel = new QLabel("grabbing");
-  //grabbingLabel->setStyleSheet("QLabel { color : gray; }");
   grabbingLabel->setEnabled(false);
+  grabbingLabel->setStyleSheet("QLabel{font-size: 11px;font-family: Arial;}");
   labelSwitch = false;
   cameraConnectedLabel = new QLabel("not connected");
   cameraConnectedLabel->setStyleSheet("QLabel { color : red; }");
+  cameraConnectedLabel->setStyleSheet("QLabel{font-size: 11px;font-family: Arial;}");
 
-  statusBar()->addWidget(new QLabel("Camera:"));
+  fileLabel = new QLabel();
+  fileLabel->setStyleSheet("QLabel{font-size: 11px;font-family: Arial;}");
+
+  QLabel *camHeader = new QLabel("Camera:");
+  camHeader->setStyleSheet("QLabel{font-size: 11px;font-family: Arial; font-weight: Bold}");
+  QLabel *statusHeader = new QLabel("Status:");
+  statusHeader->setStyleSheet("QLabel{font-size: 11px;font-family: Arial; font-weight: Bold}");
+  QLabel *fileHeader = new QLabel("Output file:");
+  fileHeader->setStyleSheet("QLabel{font-size: 11px;font-family: Arial; font-weight: Bold}");
+
+  statusBar()->addWidget(camHeader);
   statusBar()->addWidget(cameraConnectedLabel);
   statusBar()->addWidget(preassureLabel);
   statusBar()->addWidget(preassureBar);
   statusBar()->addWidget(loadLabel);
   statusBar()->addWidget(loadBar);
+  statusBar()->addWidget(statusHeader);
   statusBar()->addWidget(grabbingLabel);
   statusBar()->addWidget(writingLabel);
-
+  statusBar()->addWidget(fileHeader);
+  statusBar()->addWidget(fileLabel);
   resize(QGuiApplication::primaryScreen()->availableSize() * 3 / 5);
 }
 
@@ -269,19 +287,14 @@ void PylonRecorder::fitToWindow() {
 }
 
 void PylonRecorder::about() {
-  QMessageBox::about(this, tr("About Image Viewer"),
+  QMessageBox::about(this, tr("About Pylon Recorder"),
-                     tr("<p>The <b>Image Viewer</b> example shows how to combine QLabel "
+                     tr("<p><b>Pylon Recorder</b><br> Simple recorder for video grabbing from pylon USB3 monochrome camera."
-                        "and QScrollArea to display an image. QLabel is typically used "
+                        "Usage: In order to grab image, a camera device needs to be opened, press the connect button to do so. Push the reord button to record conituously.</p>"
-                        "for displaying a text, but it can also display an image. "
+                        "<p> videos are stored in the same folder as the tool is. Videos are compressed to mp4."
-                        "QScrollArea provides a scrolling view around another widget. "
+                        " As the buffer preassure reaches 100% frames will be lost! You may want to increase the buffer size"
-                        "If the child widget exceeds the size of the frame, QScrollArea "
+                        " or reduce the framerate.</p><p>In order to run you need to install the pylon libraries"
-                        "automatically provides scroll bars. </p><p>The example "
+                        " and the mp4 video codec avalable for download at <a href='https://www.baslerweb.com/de/'>Basler website</a></p>"
-                        "demonstrates how QLabel's ability to scale its contents "
+                        "<p>by Jan Grewe, <a href='http://www.neuroetho.uni-tuebingen.de'>Neuroethology Lab</a>, University of Tuebingen.</p>"));
-                        "(QLabel::scaledContents), and QScrollArea's ability to "
-                        "automatically resize its contents "
-                        "(QScrollArea::widgetResizable), can be used to implement "
-                        "zooming and scaling features. </p><p>In addition the example "
-                        "shows how to use QPainter to print an image.</p>"));
 }
 
 void PylonRecorder::createActions() {
@@ -351,17 +364,16 @@ void PylonRecorder::createActions() {
   grab_continuous_action = camera_menu->addAction(grab_icon, tr("&grab continuous"), this, &PylonRecorder::startRecording);
   grab_continuous_action->setShortcut(tr("Ctrl+Enter"));
   grab_stop_action = camera_menu->addAction(stop_icon, tr("&stop grabbing"), this, &PylonRecorder::stopRecording);
+  grab_stop_action->setShortcut(tr("Ctrl+Shift+Enter"));
 
   QMenu *helpMenu = menuBar()->addMenu(tr("&Help"));
   helpMenu->addAction(tr("&About"), this, &PylonRecorder::about);
   helpMenu->addAction(tr("About &Qt"), &QApplication::aboutQt);
 
-
   framerateSpinner = new QSpinBox();
   framerateSpinner->setRange(1, 120);
   framerateSpinner->setSuffix("Hz");
-  framerateSpinner->setFixedWidth(120);
+  framerateSpinner->setFixedSize(120, 25);
-  framerateSpinner->setFixedHeight(30);
   framerateSpinner->setValue(defaultFrameRate);
   framerateSpinner->setStyleSheet("QSpinBox{font-size: 10px;font-family: Arial;color: rgb(0, 0, 0);background-color: rgb(255,255,255);}");
   //framerateSpinner->setStyleSheet("QSpinBox{font-size: 10px;font-family: Arial;color: rgb(255, 255, 255);background-color: rgb(38,56,76);}");
@@ -370,7 +382,7 @@ void PylonRecorder::createActions() {
   buffersizeSpinner->setRange(100, 5000);
   buffersizeSpinner->setSingleStep(25);
   buffersizeSpinner->setValue(defaultBufferSize);
-  buffersizeSpinner->setFixedSize(120, 30);
+  buffersizeSpinner->setFixedSize(120, 25);
   buffersizeSpinner->setStyleSheet("QSpinBox{font-size: 10px;font-family: Arial;color: rgb(0, 0, 0);background-color: rgb(255,255,255);}");
 
   QToolBar *toolbar = addToolBar("main toolbar");
@@ -385,6 +397,7 @@ void PylonRecorder::createActions() {
   toolbar->addSeparator();
   toolbar->addWidget(new QLabel("frame rate:"));
   toolbar->addWidget(framerateSpinner);
+  toolbar->addSeparator();
   toolbar->addWidget(new QLabel("buffer size:"));
   toolbar->addWidget(buffersizeSpinner);
 }
@@ -438,7 +451,13 @@ void PylonRecorder::connectCamera() {
   bool success = pylon->openCamera(message);
   if (success) {
     cameraConnectedLabel->setText("connected");
-    cameraConnectedLabel->setStyleSheet("QLabel { color : green; }");
+    cameraConnectedLabel->setStyleSheet("QLabel { font-size: 10px;font-family: Arial;color: green;}");
+  }
+  else {
+     QMessageBox msgBox;
+     QString msg = "<p><b>Could not open camera device!</b><p><p>" + QString::fromStdString(message) + "</p>";
+     msgBox.setText(msg);
+     msgBox.exec();
   }
   statusBar()->showMessage(QString::fromStdString(message));
   updateActions();
@@ -448,22 +467,27 @@ void PylonRecorder::disconnectCamera() {
   pylon->closeCamera();
   statusBar()->showMessage(tr("Camera closed!"));
   cameraConnectedLabel->setText("not connected");
-  cameraConnectedLabel->setStyleSheet("QLabel { color : red; }");
+  cameraConnectedLabel->setStyleSheet("QLabel { font-size: 10px;font-family: Arial;color: red;}");
   updateActions();
 }
 
 void PylonRecorder::startRecording() {
+  std::string filename = createFilename();
+  std::cerr << filename << std::endl;
+  fileLabel->setText(QString::fromStdString(filename));
   VideoSpecs specs;
   specs.fps = 25;
-  specs.filename = "Test.mp4";
+  specs.filename = filename;
   ImageSettings settings = pylon->getImageSettings();
   specs.width = static_cast<uint32_t>(settings.width);
   specs.height= static_cast<uint32_t>(settings.height);
   specs.pixelType = settings.pixelType;
   specs.orientation = settings.orientation;
   specs.quality = 95;
-  if (buffersizeSpinner->value() != static_cast<int>(buffer->capacity()))
+  if (buffersizeSpinner->value() != static_cast<int>(buffer->capacity())) {
     buffer->resize(static_cast<size_t>(buffersizeSpinner->value()));
+    loadBar->setRange(0, buffersizeSpinner->value());
+  }
   if (framerateSpinner->value() != grabber->currentFramerate())
     grabber->setFrameRate(framerateSpinner->value());
   writer->setVideoSpecs(specs);
@@ -533,6 +557,20 @@ QColor PylonRecorder::progressColor(int value) {
   return QColor::fromCmyk(c, m, y, k);
 }
 
+std::string PylonRecorder::createFilename() {
+  QDateTime dt(QDateTime::currentDateTimeUtc());
+  QDate date = dt.date();
+  std::string base = (date.toString("yyyy.MM.dd") + "_").toStdString();
+  std::string extension = ".mp4";
+  QString idx = QString::number(movieCount);
+  std::string fname = base + idx.toStdString() + extension;
+  while (QFile::exists(QString::fromStdString(fname))) {
+      movieCount++;
+      fname = base + QString::number(movieCount).toStdString() + extension;
+  }
+  return fname;
+}
+
 void PylonRecorder::displayBufferPreassure() {
   int value = static_cast<int>(round(buffer->bufferPreassure()));
   preassureBar->setValue(value);

pylonrecorder.h

@@ -67,6 +67,7 @@ private:
     void createToolBar();
     void updateActions();
     QColor progressColor(int value);
+    std::string createFilename();
 
     bool saveFile(const QString &fileName);
     void setImage(const QImage &newImage);
@@ -74,10 +75,10 @@ private:
     void applyScaling();
     void adjustScrollBar(QScrollBar *scrollBar, double factor);
 
-    int defaultBufferSize = 1000, defaultFrameRate = 50;
+    int defaultBufferSize = 1000, defaultFrameRate = 30, movieCount = 0;
     QImage image;
     QTimer *frameTimer, *preassureTimer, *labelTimer;
-    QLabel *imageLabel, *writingLabel, *grabbingLabel, *cameraConnectedLabel;
+    QLabel *imageLabel, *writingLabel, *grabbingLabel, *cameraConnectedLabel, *fileLabel;
     QProgressBar *preassureBar;
     QProgressBar *loadBar;
     QScrollArea *scrollArea;
@@ -88,9 +89,9 @@ private:
     Writer *writer;
     bool grabbing, stopRequest, writing, labelSwitch;
     QPalette progressPalette;
-    QString activeLabelStyleHigh = "QLabel { color : red; }";
+    QString activeLabelStyleHigh = "QLabel { font-size: 10px;font-family: Arial; color : red; }";
-    QString activeLabelStyleLow = "QLabel { color : cmyk(0, 255, 255, 0, 50); }";
+    QString activeLabelStyleLow = "QLabel { font-size: 10px;font-family: Arial; color : cmyk(0, 255, 255, 0, 50); }";
-    QString inactiveLabelStyle = ("QLabel { color :gray; }");
+    QString inactiveLabelStyle = ("QLabel { font-size: 10px;font-family: Arial; color :gray; }");
     QSpinBox *framerateSpinner, *buffersizeSpinner;