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/QwtPlotSvgItem.3

@@ -0,0 +1,212 @@
+.TH "QwtPlotSvgItem" 3 "Mon Jun 1 2020" "Version 6.1.5" "Qwt User's Guide" \" -*- nroff -*-
+.ad l
+.nh
+.SH NAME
+QwtPlotSvgItem \- A plot item, which displays data in Scalable Vector Graphics (SVG) format\&.  
+
+.SH SYNOPSIS
+.br
+.PP
+.PP
+\fC#include <qwt_plot_svgitem\&.h>\fP
+.PP
+Inherits \fBQwtPlotItem\fP\&.
+.SS "Public Member Functions"
+
+.in +1c
+.ti -1c
+.RI "\fBQwtPlotSvgItem\fP (const QString &\fBtitle\fP=QString())"
+.br
+.RI "Constructor\&. "
+.ti -1c
+.RI "\fBQwtPlotSvgItem\fP (const \fBQwtText\fP &\fBtitle\fP)"
+.br
+.RI "Constructor\&. "
+.ti -1c
+.RI "virtual \fB~QwtPlotSvgItem\fP ()"
+.br
+.RI "Destructor\&. "
+.ti -1c
+.RI "bool \fBloadFile\fP (const QRectF &, const QString &fileName)"
+.br
+.ti -1c
+.RI "bool \fBloadData\fP (const QRectF &, const QByteArray &)"
+.br
+.ti -1c
+.RI "virtual QRectF \fBboundingRect\fP () const"
+.br
+.RI "Bounding rectangle of the item\&. "
+.ti -1c
+.RI "virtual void \fBdraw\fP (QPainter *, const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &canvasRect) const"
+.br
+.ti -1c
+.RI "virtual int \fBrtti\fP () const"
+.br
+.in -1c
+.SS "Protected Member Functions"
+
+.in +1c
+.ti -1c
+.RI "const QSvgRenderer & \fBrenderer\fP () const"
+.br
+.ti -1c
+.RI "QSvgRenderer & \fBrenderer\fP ()"
+.br
+.ti -1c
+.RI "void \fBrender\fP (QPainter *, const QRectF &\fBviewBox\fP, const QRectF &rect) const"
+.br
+.ti -1c
+.RI "QRectF \fBviewBox\fP (const QRectF &rect) const"
+.br
+.in -1c
+.SS "Additional Inherited Members"
+.SH "Detailed Description"
+.PP 
+A plot item, which displays data in Scalable Vector Graphics (SVG) format\&. 
+
+SVG images are often used to display maps 
+.SH "Constructor & Destructor Documentation"
+.PP 
+.SS "QwtPlotSvgItem::QwtPlotSvgItem (const QString & title = \fCQString()\fP)\fC [explicit]\fP"
+
+.PP
+Constructor\&. Sets the following item attributes:
+.IP "\(bu" 2
+\fBQwtPlotItem::AutoScale\fP: true
+.IP "\(bu" 2
+\fBQwtPlotItem::Legend\fP: false
+.PP
+.PP
+\fBParameters\fP
+.RS 4
+\fItitle\fP Title 
+.RE
+.PP
+
+.SS "QwtPlotSvgItem::QwtPlotSvgItem (const \fBQwtText\fP & title)\fC [explicit]\fP"
+
+.PP
+Constructor\&. Sets the following item attributes:
+.IP "\(bu" 2
+\fBQwtPlotItem::AutoScale\fP: true
+.IP "\(bu" 2
+\fBQwtPlotItem::Legend\fP: false
+.PP
+.PP
+\fBParameters\fP
+.RS 4
+\fItitle\fP Title 
+.RE
+.PP
+
+.SH "Member Function Documentation"
+.PP 
+.SS "void QwtPlotSvgItem::draw (QPainter * painter, const \fBQwtScaleMap\fP & xMap, const \fBQwtScaleMap\fP & yMap, const QRectF & canvasRect) const\fC [virtual]\fP"
+Draw the SVG item
+.PP
+\fBParameters\fP
+.RS 4
+\fIpainter\fP Painter 
+.br
+\fIxMap\fP X-Scale Map 
+.br
+\fIyMap\fP Y-Scale Map 
+.br
+\fIcanvasRect\fP Contents rect of the plot canvas 
+.RE
+.PP
+
+.PP
+Implements \fBQwtPlotItem\fP\&.
+.SS "bool QwtPlotSvgItem::loadData (const QRectF & rect, const QByteArray & data)"
+Load SVG data
+.PP
+\fBParameters\fP
+.RS 4
+\fIrect\fP Bounding rectangle 
+.br
+\fIdata\fP in SVG format
+.RE
+.PP
+\fBReturns\fP
+.RS 4
+true, if the SVG data could be loaded 
+.RE
+.PP
+
+.SS "bool QwtPlotSvgItem::loadFile (const QRectF & rect, const QString & fileName)"
+Load a SVG file
+.PP
+\fBParameters\fP
+.RS 4
+\fIrect\fP Bounding rectangle 
+.br
+\fIfileName\fP SVG file name
+.RE
+.PP
+\fBReturns\fP
+.RS 4
+true, if the SVG file could be loaded 
+.RE
+.PP
+
+.SS "void QwtPlotSvgItem::render (QPainter * painter, const QRectF & viewBox, const QRectF & rect) const\fC [protected]\fP"
+Render the SVG data
+.PP
+\fBParameters\fP
+.RS 4
+\fIpainter\fP Painter 
+.br
+\fIviewBox\fP View Box, see QSvgRenderer::viewBox() 
+.br
+\fIrect\fP Target rectangle on the paint device 
+.RE
+.PP
+
+.SS "QSvgRenderer & QwtPlotSvgItem::renderer ()\fC [protected]\fP"
+
+.PP
+\fBReturns\fP
+.RS 4
+Renderer used to render the SVG data 
+.RE
+.PP
+
+.SS "const QSvgRenderer & QwtPlotSvgItem::renderer () const\fC [protected]\fP"
+
+.PP
+\fBReturns\fP
+.RS 4
+Renderer used to render the SVG data 
+.RE
+.PP
+
+.SS "int QwtPlotSvgItem::rtti () const\fC [virtual]\fP"
+
+.PP
+\fBReturns\fP
+.RS 4
+\fBQwtPlotItem::Rtti_PlotSVG\fP 
+.RE
+.PP
+
+.PP
+Reimplemented from \fBQwtPlotItem\fP\&.
+.SS "QRectF QwtPlotSvgItem::viewBox (const QRectF & rect) const\fC [protected]\fP"
+Calculate the view box from rect and \fBboundingRect()\fP\&.
+.PP
+\fBParameters\fP
+.RS 4
+\fIrect\fP Rectangle in scale coordinates 
+.RE
+.PP
+\fBReturns\fP
+.RS 4
+View box, see QSvgRenderer::viewBox() 
+.RE
+.PP
+
+
+.SH "Author"
+.PP 
+Generated automatically by Doxygen for Qwt User's Guide from the source code\&.