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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)
This commit is contained in:
Dhanya Thattil
176
libs/qwt-6.1.5/include/qwt_graphic.h
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176
libs/qwt-6.1.5/include/qwt_graphic.h
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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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* Qwt Widget Library
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* Copyright (C) 1997 Josef Wilgen
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* Copyright (C) 2002 Uwe Rathmann
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the Qwt License, Version 1.0
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*****************************************************************************/
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#ifndef QWT_GRAPHIC_H
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#define QWT_GRAPHIC_H
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#include "qwt_global.h"
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#include "qwt_null_paintdevice.h"
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#include <qmetatype.h>
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#include <qimage.h>
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#include <qpixmap.h>
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class QwtPainterCommand;
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/*!
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\brief A paint device for scalable graphics
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QwtGraphic is the representation of a graphic that is tailored for
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scalability. Like QPicture it will be initialized by QPainter
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operations and can be replayed later to any target paint device.
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While the usual image representations QImage and QPixmap are not
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scalable Qt offers two paint devices, that might be candidates
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for representing a vector graphic:
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- QPicture\n
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Unfortunately QPicture had been forgotten, when Qt4
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introduced floating point based render engines. Its API
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is still on integers, what make it unusable for proper scaling.
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- QSvgRenderer/QSvgGenerator\n
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Unfortunately QSvgRenderer hides to much information about
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its nodes in internal APIs, that are necessary for proper
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layout calculations. Also it is derived from QObject and
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can't be copied like QImage/QPixmap.
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QwtGraphic maps all scalable drawing primitives to a QPainterPath
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and stores them together with the painter state changes
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( pen, brush, transformation ... ) in a list of QwtPaintCommands.
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For being a complete QPaintDevice it also stores pixmaps or images,
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what is somehow against the idea of the class, because these objects
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can't be scaled without a loss in quality.
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The main issue about scaling a QwtGraphic object are the pens used for
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drawing the outlines of the painter paths. While non cosmetic pens
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( QPen::isCosmetic() ) are scaled with the same ratio as the path,
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cosmetic pens have a fixed width. A graphic might have paths with
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different pens - cosmetic and non-cosmetic.
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QwtGraphic caches 2 different rectangles:
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- control point rectangle\n
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The control point rectangle is the bounding rectangle of all
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control point rectangles of the painter paths, or the target
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rectangle of the pixmaps/images.
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- bounding rectangle\n
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The bounding rectangle extends the control point rectangle by
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what is needed for rendering the outline with an unscaled pen.
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Because the offset for drawing the outline depends on the shape
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of the painter path ( the peak of a triangle is different than the flat side )
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scaling with a fixed aspect ratio always needs to be calculated from the
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control point rectangle.
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\sa QwtPainterCommand
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*/
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class QWT_EXPORT QwtGraphic: public QwtNullPaintDevice
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{
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public:
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/*!
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Hint how to render a graphic
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\sa setRenderHint(), testRenderHint()
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*/
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enum RenderHint
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{
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/*!
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When rendering a QwtGraphic a specific scaling between
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the controlPointRect() and the coordinates of the target rectangle
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is set up internally in render().
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When RenderPensUnscaled is set this specific scaling is applied
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for the control points only, but not for the pens.
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All other painter transformations ( set up by application code )
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are supposed to work like usual.
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\sa render();
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*/
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RenderPensUnscaled = 0x1
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};
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/*!
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\brief Render hints
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The default setting is to disable all hints
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*/
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typedef QFlags<RenderHint> RenderHints;
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QwtGraphic();
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QwtGraphic( const QwtGraphic & );
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virtual ~QwtGraphic();
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QwtGraphic& operator=( const QwtGraphic & );
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void reset();
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bool isNull() const;
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bool isEmpty() const;
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void render( QPainter * ) const;
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void render( QPainter *, const QSizeF &,
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Qt::AspectRatioMode = Qt::IgnoreAspectRatio ) const;
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void render( QPainter *, const QRectF &,
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Qt::AspectRatioMode = Qt::IgnoreAspectRatio ) const;
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void render( QPainter *, const QPointF &,
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Qt::Alignment = Qt::AlignTop | Qt::AlignLeft ) const;
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QPixmap toPixmap() const;
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QPixmap toPixmap( const QSize &,
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Qt::AspectRatioMode = Qt::IgnoreAspectRatio ) const;
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QImage toImage() const;
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QImage toImage( const QSize &,
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Qt::AspectRatioMode = Qt::IgnoreAspectRatio ) const;
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QRectF scaledBoundingRect( double sx, double sy ) const;
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QRectF boundingRect() const;
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QRectF controlPointRect() const;
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const QVector< QwtPainterCommand > &commands() const;
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void setCommands( QVector< QwtPainterCommand > & );
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void setDefaultSize( const QSizeF & );
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QSizeF defaultSize() const;
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void setRenderHint( RenderHint, bool on = true );
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bool testRenderHint( RenderHint ) const;
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protected:
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virtual QSize sizeMetrics() const;
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virtual void drawPath( const QPainterPath & );
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virtual void drawPixmap( const QRectF &,
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const QPixmap &, const QRectF & );
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virtual void drawImage( const QRectF &,
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const QImage &, const QRectF &, Qt::ImageConversionFlags );
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virtual void updateState( const QPaintEngineState &state );
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private:
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void updateBoundingRect( const QRectF & );
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void updateControlPointRect( const QRectF & );
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class PathInfo;
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class PrivateData;
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PrivateData *d_data;
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};
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Q_DECLARE_OPERATORS_FOR_FLAGS( QwtGraphic::RenderHints )
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Q_DECLARE_METATYPE( QwtGraphic )
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#endif
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