Qt5 built in qwt (#570)

- qt4->qt5
- in built qt5 6.1.5 because rhel7 is not upto date with qt5, removed findqwt.cmake
- made a fix in qwt lib (qwt_plot_layout.h) to work with 5.15 and lower versions for qrect constr.
- qt5 forms fixed, qt4 many hard coding forms switched to forms including qtabwidget, scrolls etc, fonts moved to forms
 - docking option enabled by default, removed option to disable docking feature from "Mode"
- added qVersionResolve utility functions to handle compatibility before and after qt5.12
- qtplots (ian's code) takes in gain mode enable to set some settings within the class, with proper gain plot ticks
- ensure gain plots have no zooming of z axis in 2d and y axis in 1d
- removed placeholder text in qpalette in main window form as its not supportd until 5.12 (so using qt5.9 designer insted of qt5.15 to cope)
- tab order
Servers:
- fixed some error messages that were empty for fail in funcs (mostly minor as if this error, major issues)

slsDetectorGui/include/qDefs.h

@@ -41,7 +41,10 @@ class qDefs : public QWidget {
      */
     qDefs(){};
 
-    static const int Q_FONT_SIZE = 9;
+    static QFont GetDefaultFont() {
+        return QFont("Cantarell", 10, QFont::Normal);
+    }
+
     static const int DATA_GAIN_PLOT_RATIO = 5;
     static const int MIN_HEIGHT_GAIN_PLOT_1D = 75;
     static const int GUI_ZMQ_RCV_HWM = 2;

slsDetectorGui/include/qDetectorMain.h

@@ -4,9 +4,6 @@
 #include "qDefs.h"
 #include "sls/Detector.h"
 #include "ui_form_detectormain.h"
-#include <QTabWidget>
-
-class QScrollArea;
 class QResizeEvent;
 
 namespace sls {
@@ -21,15 +18,6 @@ class qTabDebugging;
 class qTabDeveloper;
 class qTabMessages;
 
-/** To Over-ride the QTabWidget class to get the tabBar protected
- * methodTabWidget */
-class MyTabWidget : public QTabWidget {
-  public:
-    MyTabWidget(QWidget *parent = 0) { setParent(parent); }
-    /** Overridden protected method from QTabWidget */
-    QTabBar *tabBar() { return QTabWidget::tabBar(); }
-};
-
 class qDetectorMain : public QMainWindow, private Ui::DetectorMainObject {
     Q_OBJECT
 
@@ -75,8 +63,6 @@ class qDetectorMain : public QMainWindow, private Ui::DetectorMainObject {
     slsDetectorDefs::detectorType detType;
     std::unique_ptr<Detector> det;
     qDrawPlot *plot;
-    MyTabWidget *tabs;
-    QScrollArea *scroll[NumberOfTabs];
     qTabMeasurement *tabMeasurement;
     qTabDataOutput *tabDataOutput;
     qTabPlot *tabPlot;
@@ -85,9 +71,7 @@ class qDetectorMain : public QMainWindow, private Ui::DetectorMainObject {
     qTabDebugging *tabDebugging;
     qTabDeveloper *tabDeveloper;
     qTabMessages *tabMessages;
-    int isDeveloper;
-    int heightPlotWindow;
-    int heightCentralWidget;
+    int isDeveloper{false};
     QString zoomToolTip;
     QColor defaultTabColor;
 };

slsDetectorGui/include/qTabDebugging.h

@@ -4,9 +4,6 @@
 #include "sls/Detector.h"
 #include "ui_form_tab_debugging.h"
 
-class QTreeWidget;
-class QTreeWidgetItem;
-
 namespace sls {
 
 class qTabDebugging : public QWidget, private Ui::TabDebuggingObject {
@@ -18,22 +15,20 @@ class qTabDebugging : public QWidget, private Ui::TabDebuggingObject {
     void Refresh();
 
   private slots:
-    void GetDetectorStatus();
     void GetInfo();
-    void SetParameters(QTreeWidgetItem *item);
+    void EnableTest();
     void TestDetector();
 
   private:
     void SetupWidgetWindow();
     void Initialization();
     void PopulateDetectors();
+    void GetFirmwareVersion();
+    void GetServerSoftwareVersion();
+    void GetReceiverVersion();
+    void GetDetectorStatus();
 
     Detector *det;
-    /** Tree Widget displaying the detectors, modules */
-    QTreeWidget *treeDet;
-    QLabel *lblDetectorHostname;
-    QLabel *lblDetectorFirmware;
-    QLabel *lblDetectorSoftware;
 };
 
 } // namespace sls

slsDetectorGui/include/qTabPlot.h

@@ -38,8 +38,8 @@ class qTabPlot : public QWidget, private Ui::TabPlotObject {
     void CheckAspectRatio();
     void SetZRange();
     void SetStreamingFrequency();
-    void SetStreamingHwm(int value);
-    void SetReceivingHwm(int value);
+    void SelectHwm(int value);
+    void SetHwm(int value);
 
   signals:
     void DisableZoomSignal(bool);
@@ -50,8 +50,11 @@ class qTabPlot : public QWidget, private Ui::TabPlotObject {
     void Select1DPlot(bool enable);
     void GetGapPixels();
     void GetStreamingFrequency();
+    void GetHwm();
     void GetStreamingHwm();
+    void SetStreamingHwm(int value);
     void GetReceivingHwm();
+    void SetReceivingHwm(int value);
     void SetXYRange();
     void MaintainAspectRatio(int dimension);
 
@@ -66,6 +69,8 @@ class qTabPlot : public QWidget, private Ui::TabPlotObject {
     static QString defaultImageXAxisTitle;
     static QString defaultImageYAxisTitle;
     static QString defaultImageZAxisTitle;
+
+    enum { SND_HWM, RX_HWM };
 };
 
 } // namespace sls

slsDetectorGui/include/qVersionResolve.h

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: LGPL-3.0-or-other
+// Copyright (C) 2021 Contributors to the SLS Detector Package
+#pragma once
+
+#include <QFontMetrics>
+#include <QString>
+
+namespace sls {
+
+int qResolve_GetQFontWidth(const QFontMetrics fm, const QString &text,
+                           int len = -1);
+
+} // namespace sls