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)

libs/qwt-6.1.5/doc/man/man3/QwtTextLabel.3

@@ -0,0 +1,229 @@
+.TH "QwtTextLabel" 3 "Mon Jun 1 2020" "Version 6.1.5" "Qwt User's Guide" \" -*- nroff -*-
+.ad l
+.nh
+.SH NAME
+QwtTextLabel \- A Widget which displays a \fBQwtText\fP\&.  
+
+.SH SYNOPSIS
+.br
+.PP
+.PP
+\fC#include <qwt_text_label\&.h>\fP
+.PP
+Inherits QFrame\&.
+.PP
+Inherited by \fBQwtLegendLabel\fP\&.
+.SS "Public Slots"
+
+.in +1c
+.ti -1c
+.RI "void \fBsetText\fP (const QString &, \fBQwtText::TextFormat\fP textFormat=\fBQwtText::AutoText\fP)"
+.br
+.ti -1c
+.RI "virtual void \fBsetText\fP (const \fBQwtText\fP &)"
+.br
+.ti -1c
+.RI "void \fBclear\fP ()"
+.br
+.RI "Clear the text and all \fBQwtText\fP attributes\&. "
+.in -1c
+.SS "Public Member Functions"
+
+.in +1c
+.ti -1c
+.RI "\fBQwtTextLabel\fP (QWidget *parent=NULL)"
+.br
+.ti -1c
+.RI "\fBQwtTextLabel\fP (const \fBQwtText\fP &, QWidget *parent=NULL)"
+.br
+.ti -1c
+.RI "virtual \fB~QwtTextLabel\fP ()"
+.br
+.RI "Destructor\&. "
+.ti -1c
+.RI "void \fBsetPlainText\fP (const QString &)"
+.br
+.ti -1c
+.RI "QString \fBplainText\fP () const"
+.br
+.ti -1c
+.RI "const \fBQwtText\fP & \fBtext\fP () const"
+.br
+.RI "Return the text\&. "
+.ti -1c
+.RI "int \fBindent\fP () const"
+.br
+.RI "Return label's text indent in pixels\&. "
+.ti -1c
+.RI "void \fBsetIndent\fP (int)"
+.br
+.ti -1c
+.RI "int \fBmargin\fP () const"
+.br
+.RI "Return label's text margin in pixels\&. "
+.ti -1c
+.RI "void \fBsetMargin\fP (int)"
+.br
+.ti -1c
+.RI "virtual QSize \fBsizeHint\fP () const"
+.br
+.RI "Return a size hint\&. "
+.ti -1c
+.RI "virtual QSize \fBminimumSizeHint\fP () const"
+.br
+.RI "Return a minimum size hint\&. "
+.ti -1c
+.RI "virtual int \fBheightForWidth\fP (int) const"
+.br
+.ti -1c
+.RI "QRect \fBtextRect\fP () const"
+.br
+.ti -1c
+.RI "virtual void \fBdrawText\fP (QPainter *, const QRectF &)"
+.br
+.RI "Redraw the text\&. "
+.in -1c
+.SS "Protected Member Functions"
+
+.in +1c
+.ti -1c
+.RI "virtual void \fBpaintEvent\fP (QPaintEvent *)"
+.br
+.ti -1c
+.RI "virtual void \fBdrawContents\fP (QPainter *)"
+.br
+.RI "Redraw the text and focus indicator\&. "
+.in -1c
+.SH "Detailed Description"
+.PP 
+A Widget which displays a \fBQwtText\fP\&. 
+.SH "Constructor & Destructor Documentation"
+.PP 
+.SS "QwtTextLabel::QwtTextLabel (QWidget * parent = \fCNULL\fP)\fC [explicit]\fP"
+Constructs an empty label\&. 
+.PP
+\fBParameters\fP
+.RS 4
+\fIparent\fP Parent widget 
+.RE
+.PP
+
+.SS "QwtTextLabel::QwtTextLabel (const \fBQwtText\fP & text, QWidget * parent = \fCNULL\fP)\fC [explicit]\fP"
+Constructs a label that displays the text, text 
+.PP
+\fBParameters\fP
+.RS 4
+\fIparent\fP Parent widget 
+.br
+\fItext\fP Text 
+.RE
+.PP
+
+.SH "Member Function Documentation"
+.PP 
+.SS "int QwtTextLabel::heightForWidth (int width) const\fC [virtual]\fP"
+
+.PP
+\fBParameters\fP
+.RS 4
+\fIwidth\fP Width 
+.RE
+.PP
+\fBReturns\fP
+.RS 4
+Preferred height for this widget, given the width\&. 
+.RE
+.PP
+
+.SS "void QwtTextLabel::paintEvent (QPaintEvent * event)\fC [protected]\fP, \fC [virtual]\fP"
+Qt paint event 
+.PP
+\fBParameters\fP
+.RS 4
+\fIevent\fP Paint event 
+.RE
+.PP
+
+.PP
+Reimplemented in \fBQwtLegendLabel\fP\&.
+.SS "QString QwtTextLabel::plainText () const"
+Interface for the designer plugin
+.PP
+\fBReturns\fP
+.RS 4
+Text as plain text 
+.RE
+.PP
+\fBSee also\fP
+.RS 4
+\fBsetPlainText()\fP, \fBtext()\fP 
+.RE
+.PP
+
+.SS "void QwtTextLabel::setIndent (int indent)"
+Set label's text indent in pixels 
+.PP
+\fBParameters\fP
+.RS 4
+\fIindent\fP Indentation in pixels 
+.RE
+.PP
+
+.SS "void QwtTextLabel::setMargin (int margin)"
+Set label's margin in pixels 
+.PP
+\fBParameters\fP
+.RS 4
+\fImargin\fP Margin in pixels 
+.RE
+.PP
+
+.SS "void QwtTextLabel::setPlainText (const QString & text)"
+Interface for the designer plugin - does the same as \fBsetText()\fP 
+.PP
+\fBSee also\fP
+.RS 4
+\fBplainText()\fP 
+.RE
+.PP
+
+.SS "void QwtTextLabel::setText (const QString & text, \fBQwtText::TextFormat\fP textFormat = \fC\fBQwtText::AutoText\fP\fP)\fC [slot]\fP"
+Change the label's text, keeping all other \fBQwtText\fP attributes 
+.PP
+\fBParameters\fP
+.RS 4
+\fItext\fP New text 
+.br
+\fItextFormat\fP Format of text
+.RE
+.PP
+\fBSee also\fP
+.RS 4
+\fBQwtText\fP 
+.RE
+.PP
+
+.SS "void QwtTextLabel::setText (const \fBQwtText\fP & text)\fC [virtual]\fP, \fC [slot]\fP"
+Change the label's text 
+.PP
+\fBParameters\fP
+.RS 4
+\fItext\fP New text 
+.RE
+.PP
+
+.PP
+Reimplemented in \fBQwtLegendLabel\fP\&.
+.SS "QRect QwtTextLabel::textRect () const"
+Calculate geometry for the text in widget coordinates 
+.PP
+\fBReturns\fP
+.RS 4
+Geometry for the text 
+.RE
+.PP
+
+
+.SH "Author"
+.PP 
+Generated automatically by Doxygen for Qwt User's Guide from the source code\&.