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Qt5 built in qwt (#570)

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- 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)
This commit is contained in:
Dhanya Thattil
2022-11-11 15:15:10 +01:00
committed by GitHub
parent 05f657c106
commit 38cd10d4e6
1697 changed files with 255572 additions and 4708 deletions
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.TH "qwtchangelog" 3 "Mon Jun 1 2020" "Version 6.1.5" "Qwt User's Guide" \" -*- nroff -*-
.ad l
.nh
.SH NAME
qwtchangelog \- What's new in Qwt 6\&.1
.SH "New plot items"
.PP
.IP "\(bu" 2
\fBQwtPlotBarChart\fP
.br
Bar chart, see 'examples/distrowatch'
.IP "\(bu" 2
\fBQwtPlotMultiBarChart\fP
.br
Chart of grouped bars - stacked or aligned side by side\&. See 'examples/barchart'
.IP "\(bu" 2
\fBQwtPlotTradingCurve\fP
.br
Candlestick or OHLC charts typically used to describe price movements over time\&. See 'examples/stockchart'
.IP "\(bu" 2
\fBQwtPlotShapeItem\fP
.br
A plot item to display rectangles, circles, polygons and all other type of shapes ( built from intersections or unifications ), that can be expressed by a QPainterPath\&. See 'examples/itemeditor'
.IP "\(bu" 2
\fBQwtPlotLegendItem\fP
.br
A legend on the plot canvas\&. See 'examples/legends'
.IP "\(bu" 2
\fBQwtPlotZoneItem\fP
.br
A horizontal or vertical section
.IP "\(bu" 2
\fBQwtPlotTextLabel\fP
.br
In opposite to a \fBQwtPlotMarker\fP the text is not aligned to a plot coordinate but according to the geometry of the canvas ( f\&.e top/centered for a title )\&. See 'playground/curvetracker'\&.
.PP
.SH "Scales beyond linear and logarithmic transformations"
.PP
QwtScaleTransformation has been replaced by \fBQwtTransform\fP and its derived classes:
.PP
.IP "\(bu" 2
\fBQwtTransform\fP
.IP "\(bu" 2
\fBQwtNullTransform\fP
.IP "\(bu" 2
\fBQwtLogTransform\fP
.IP "\(bu" 2
\fBQwtPowerTransform\fP
.PP
.PP
Individual transformations ( f\&.e\&. different scaling for special sections ) can be implemented by overloading \fBQwtTransform\fP ( see playground/scaleengine )\&.
.PP
\fBQwtLinearScaleEngine\fP and \fBQwtLogScaleEngine\fP are not limited to base 10 anymore\&.
.SS "Datetime scales"
A set of a new classes for displaying datetime values:
.PP
.IP "\(bu" 2
\fBQwtDate\fP
.br
A collection of methods to convert between QDateTime and doubles
.IP "\(bu" 2
\fBQwtDateScaleEngine\fP
.br
A scale engine that aligns and finds ticks in terms of datetime units\&.
.IP "\(bu" 2
\fBQwtDateScaleDraw\fP
.br
A scale draw mapping values to datetime strings\&.
.PP
.PP
Scales for Qt::UTC and Qt::LocalTime are supported\&.
.SH "Redesign of the dial and meter widgets"
.PP
Many parts of the class design of the dial and meter widgets were left over from the 90s ( Qwt 0\&.2, Qt 1\&.1 )\&.
.PP
The derivation tree is simpler and more logical:
.PP
.IP "\(bu" 2
\fBQwtAbstractScale\fP is a QWidget
.IP "\(bu" 2
\fBQwtAbstractSlider\fP is a \fBQwtAbstractScale\fP\&. ( for sliders without scales QAbstractSlider should be the base class )
.IP "\(bu" 2
\fBQwtThermo\fP is also a \fBQwtAbstractScale\fP
.IP "\(bu" 2
\fBQwtDial\fP, \fBQwtKnob\fP, \fBQwtSlider\fP are derived from \fBQwtAbstractSlider\fP
.IP "\(bu" 2
\fBQwtCounter\fP is derived from QWidget
.PP
.PP
QwtDoubleRange has been removed\&.
.PP
All classes use the terminology known from QAbstractSlider - as far as possible\&. The extended \fBsystem for scales\fP is completely supported\&.
.SH "Basic support for an OpenGL plot canvas"
.PP
\fBQwtPlotGLCanvas\fP offers the option to draw plot items using an OpenGL paint engine ( QPaintEngine::OpenGL/OpenGL2 ), This is not what could be implemented with native OpenGL, but it offers hardware acceleration in environments, where the raster paint engine is the only option\&. ( f\&.e Qt4/Windows, or Qt5 on all platforms )\&.
.PP
\fBQwtPlotGLCanvas\fP is in an experimental state and is not recommended for average use cases\&.
.SH "A new system for plot legends"
.PP
\fBQwtLegend\fP has been decoupled from \fBQwtPlot\fP and can be replaced by application specific implementations\&. Plot items and the legend exchange the information using \fBQwtLegendData\fP\&.
.PP
\fBQwtPlotLegendItem\fP is a new plot item that displays a legend on the plot canvas\&.
.PP
The following examples demonstrate how to use the new system:
.PP
.IP "\(bu" 2
examples/legends
.br
shows how to use the new legend system
.IP "\(bu" 2
examples/stockchart
.br
implementats a QTreeView with checkable items as legend
.PP
.SH "Off-screen paint device for vector graphics"
.PP
\fBQwtGraphic\fP can be copied like QImage or QPixmap but is scalable like QSvgGenerator\&. It is implemented as a record/replay paint device like QPicture\&.
.SH "QwtWidgetOverlay"
.PP
\fBQwtWidgetOverlay\fP is a base class for implementing widget overlays - primarily used for use cases like graphical editors or running cursors for the plot canvas\&.
.PP
The following examples show how to use overlays:
.PP
.IP "\(bu" 2
examples/itemeditor
.IP "\(bu" 2
examples/curvetracker
.PP
.PP
\fBQwtPicker\fP ( -> \fBQwtPlotPicker\fP, \fBQwtPlotZoomer\fP ) internally uses \fBQwtWidgetOverlay\fP now, making it easier to implement individual rubber bands\&.
.SH "QwtSymbol"
.PP
New symbol types have been introduced:
.PP
.IP "\(bu" 2
\fBQwtSymbol::Path\fP
.IP "\(bu" 2
\fBQwtSymbol::Pixmap\fP
.IP "\(bu" 2
\fBQwtSymbol::Graphic\fP
.IP "\(bu" 2
\fBQwtSymbol::SvgDocument\fP
.PP
.PP
\fBQwtSymbol\fP autodetect the most performant paint strategy for a paint device what is in most situations using a QPixmap cache\&.
.PP
\fBQwtSymbol::setPinPoint()\fP allows one to align the symbol individually, f\&.e to the position of the peak of an arrow\&.
.SH "QwtPlotCurve"
.PP
Some optimizations that got lost with introducing the floating point based render code with Qwt 6\&.0 have been reenabled\&. Other specific optimizations have been added\&.
.PP
New paint attributes:
.PP
.IP "\(bu" 2
\fBQwtPlotCurve::FilterPoints\fP
.IP "\(bu" 2
\fBQwtPlotCurve::MinimizeMemory\fP
.IP "\(bu" 2
\fBQwtPlotCurve::ImageBuffer\fP
.PP
.PP
QwtPlotCurve::CacheSymbols has been removed, as caching is implemented in \fBQwtSymbol\fP now\&.
.br
.PP
\fBQwtPlotCurve::drawLines()\fP, \fBQwtPlotCurve::drawDots()\fP, \fBQwtPlotCurve::drawSteps()\fP and \fBQwtPlotCurve::drawSticks()\fP are virtual now\&.
.SH "QwtPlot"
.PP
A footer similar to a title has been added\&.
.PP
QwtPlot::ExternalLegend is obsolete with the new \fBsystem for legends\fP\&. The signals QwtPlot::legendClicked(), QwtPlot::legendChecked() have been removed\&. Applications need to connect to \fBQwtLegend::clicked()\fP and \fBQwtLegend::checked()\fP\&.
.PP
To support using an OpenGL canvas \fBQwtPlot::setCanvas\fP has been added\&. This has 2 important implications for the application code:
.PP
.IP "\(bu" 2
\fBQwtPlot::canvas()\fP returns QWidget and needs to be casted, when using methods of \fBQwtPlotCanvas\fP\&.
.IP "\(bu" 2
\fBQwtPlotCanvas\fP can be created and assigned in application code, what makes it possible to derive and overload methods\&.
.PP
.PP
The initialization of a plot canvas with Qwt 6\&.1 will probably look like this:
.PP
.PP
.nf
QwtPlotCanvas* canvas = new QwtPlotCanvas();
canvas->setXY( \&.\&.\&. );
\&.\&.\&.
plot->setCanvas( canvas );
.fi
.PP
.PP
To have a consistent API \fBQwtPlot::setPlotLayout()\fP has been added,
.SH "Other"
.PP
.SS "QwtScaleDiv"
The following methods have been added:
.PP
.IP "\(bu" 2
\fBQwtScaleDiv::inverted()\fP
.IP "\(bu" 2
\fBQwtScaleDiv::bounded()\fP
.IP "\(bu" 2
\fBQwtScaleDiv::isEmpty()\fP
.IP "\(bu" 2
\fBQwtScaleDiv::isIncreasing()\fP
.IP "\(bu" 2
QDebug operator
.PP
.PP
The following methods have been removed:
.PP
.IP "\(bu" 2
QwtScaleDiv::isValid(), QwtScaleDiv::invalidate()
.br
The valid state was left over from early Qwt versions indicating a state of the autoscaler\&.
.PP
.SS "QwtScaleEngine"
The following methods have been added:
.PP
.IP "\(bu" 2
\fBQwtScaleEngine::setBase()\fP
.IP "\(bu" 2
\fBQwtScaleEngine::setTransformation()\fP
.PP
.SS "QwtPlotLayout"
The following flags have been added:
.PP
.IP "\(bu" 2
\fBQwtPlotLayout::IgnoreTitle\fP
.IP "\(bu" 2
\fBQwtPlotLayout::IgnoreFooter\fP
.IP "\(bu" 2
\fBQwtPlotLayout::setAlignCanvasToScale()\fP
.PP
.SS "QwtPlotCanvas"
Rounded borders ( like with style sheets ) can configured using \fBQwtPlotCanvas::setBorderRadius()\fP;
.SS "Other changes"
.IP "\(bu" 2
\fBQwtWeedingCurveFitter\fP
.br
\fBQwtWeedingCurveFitter::setChunkSize()\fP has been added, with drastic performance improvements for huge sets of points\&.
.IP "\(bu" 2
\fBQwtPlotRenderer\fP The frame of the plot canvas can be rendered, what makes the result even closer to WYSWYG\&. \fBQwtPlotRenderer::exportTo()\fP has been added\&.
.IP "\(bu" 2
\fBQwtSystemClock\fP For Qt >= 4\&.9 \fBQwtSystemClock\fP uses QElapsedTimer internally\&. As it doesn't support a similar feature, QwtSystemClock::precision() has been removed\&.
.IP "\(bu" 2
QwtPlotAbstractSeriesItem
.br
QwtPlotAbstractSeriesItem has been split into \fBQwtPlotSeriesItem\fP and QwtPlotAbstractSeriesStore\&.
.IP "\(bu" 2
\fBQwtText\fP
.br
A metatype declaration has been added, so that \fBQwtText\fP can be used with QVariant\&.
.IP "\(bu" 2
\fBQwtEventPattern\fP, \fBQwtPanner\fP, \fBQwtMagnifier\fP
.br
Forgotten Qt3 leftovers have been fixed: int -> Qt::KeyboardModifiers
.IP "\(bu" 2
QPen Qt5/Qt4 incompatibility The default pen width for Qt5 is 1, what makes it a non cosmetic\&. To hide this nasty incompatibility several setPen() methods have been added the build pens with a width 0\&. See QPen::isCosmetic(),
.IP "\(bu" 2
qwtUpperSampleIndex()
.br
A binary search algorithm for sorted samples
.IP "\(bu" 2
\fBQwtMatrixRasterData\fP \fBQwtMatrixRasterData::setValue()\fP has been added
.IP "\(bu" 2
\fBQwtPicker\fP QwtPicker::rubberBandWidget(), QwtPicker::trackerWidget() have been replaced by \fBQwtPicker::rubberBandOverlay()\fP, \fBQwtPicker::trackerOverlay()\fP\&. \fBQwtPicker::rubberBandMask()\fP has been added\&. QwtPicker::pickRect() has been replaced by \fBQwtPicker::pickArea()\fP
.IP "\(bu" 2
\fBQwtPlotItem\fP \fBQwtPlotItem::ItemInterest\fP has been added\&. \fBQwtPlotItem::setRenderThreadCount()\fP was shifted from \fBQwtPlotRasterItem\fP\&.
.IP "\(bu" 2
\&.\&.\&.
.PP
.SH "Summary of the new classes"
.PP
.IP "\(bu" 2
\fBQwtAbstractLegend\fP
.IP "\(bu" 2
\fBQwtDate\fP
.IP "\(bu" 2
\fBQwtDateScaleDraw\fP
.IP "\(bu" 2
\fBQwtDateScaleEngine\fP
.IP "\(bu" 2
\fBQwtGraphic\fP
.IP "\(bu" 2
\fBQwtLegendData\fP
.IP "\(bu" 2
\fBQwtLegendLabel\fP
.IP "\(bu" 2
\fBQwtPainterCommand\fP
.IP "\(bu" 2
\fBQwtPixelMatrix\fP
.IP "\(bu" 2
\fBQwtPlotAbstractBarChart\fP
.IP "\(bu" 2
\fBQwtPlotBarChart\fP
.IP "\(bu" 2
\fBQwtPlotMultiBarChart\fP
.IP "\(bu" 2
\fBQwtPlotGLCanvas\fP
.IP "\(bu" 2
\fBQwtPlotLegendItem\fP
.IP "\(bu" 2
\fBQwtPlotShapeItem\fP
.IP "\(bu" 2
\fBQwtPlotTextLabel\fP
.IP "\(bu" 2
\fBQwtPlotTradingCurve\fP
.IP "\(bu" 2
\fBQwtPlotZoneItem\fP
.IP "\(bu" 2
QwtPointData
.IP "\(bu" 2
\fBQwtPointMapper\fP
.IP "\(bu" 2
\fBQwtTransform\fP, \fBQwtNullTransform\fP, \fBQwtLogTransform\fP, \fBQwtPowerTransform\fP
.IP "\(bu" 2
\fBQwtWidgetOverlay\fP
.PP