mirror of
https://github.com/jkriege2/JKQtPlotter.git
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356cc34349
new: iterator interface and improved documentation for JKQTPDatastore reorganization of library (better separation of common code in jkqtpcommon and other code e.g. in jkqtplotter or jkqtmathtext)
350 lines
15 KiB
C++
350 lines
15 KiB
C++
/*
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Copyright (c) 2008-2019 Jan W. Krieger (<jan@jkrieger.de>)
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This software is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License (LGPL) as published by
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the Free Software Foundation, either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License (LGPL) for more details.
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You should have received a copy of the GNU Lesser General Public License (LGPL)
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <QString>
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#include <QPainter>
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#include <QPair>
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#include "jkqtplotter/jkqtptools.h"
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#include "jkqtcommon/jkqtp_imexport.h"
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#include "jkqtplotter/jkqtpimagetools.h"
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#include "jkqtplotter/jkqtpgraphsbase.h"
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#include "jkqtplotter/jkqtpgraphsbaseerrors.h"
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#include "jkqtplotter/jkqtpgraphsbasestylingmixins.h"
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#ifndef jkqtpgraphsbarchart_H
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#define jkqtpgraphsbarchart_H
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/*! \brief This implements a bar graph with bars starting at \f$ y=0 \f$ to \f$ y=f(x) \f$
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\ingroup jkqtplotter_barssticks
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This class plots a bargraph. This image explains the parameters:
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\image html bargraph_basics.png
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By default the sift parameter is, so the bar is centered at the x-value. The width is 0.9,
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so adjacent bars are plotted with a small distance between them. It is possible to use these two parameters
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to plot multiple bars for every x-value, by having on JKQTPSpecialLineHorizontalGraph object per
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set of bars that belong together. For example for three bars per x-value one would set:
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\verbatim
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width=0.3
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shift=-0.3 / 0 / +0.3
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\endverbatim
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This results in a bargraph, as shown here:
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\image html plot_bargraphverplot.png
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You can use JKQTPlotter::addHorizontalBargraph() to add a series of bargraphs, where the width and shift are determined
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automatically. The y-columns are given as a QVector<int> to this function.
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*/
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class JKQTP_LIB_EXPORT JKQTPBarVerticalGraph: public JKQTPXYGraph, public JKQTPGraphLineStyleMixin, public JKQTPGraphFillStyleMixin {
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Q_OBJECT
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public:
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/** \brief class constructor */
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JKQTPBarVerticalGraph(JKQTBasePlotter* parent=nullptr);
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/** \brief class constructor */
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JKQTPBarVerticalGraph(JKQTPlotter* parent);
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/** \brief plots the graph to the plotter object specified as parent */
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virtual void draw(JKQTPEnhancedPainter& painter) override;
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/** \brief plots a key marker inside the specified rectangle \a rect */
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virtual void drawKeyMarker(JKQTPEnhancedPainter& painter, QRectF& rect) override;
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/** \brief returns the color to be used for the key label */
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virtual QColor getKeyLabelColor() const override;
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/** \brief get the maximum and minimum x-value of the graph
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*
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* The result is given in the two parameters which are call-by-reference parameters!
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*/
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virtual bool getXMinMax(double& minx, double& maxx, double& smallestGreaterZero) override;
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/** \brief get the maximum and minimum y-value of the graph
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*
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* The result is given in the two parameters which are call-by-reference parameters!
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*/
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virtual bool getYMinMax(double& miny, double& maxy, double& smallestGreaterZero) override;
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/** \brief finds all bar charts of the same orientation and determines width and shift, so they stand side by side
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*
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* \param maxWidth the maximum (relative) width, that all bars will span of the (doubled) inter-bar distance
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* \param shrinkFactor factor, by which the bar are shrinked compared to the available space
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*
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* \note This function will scale ALL graphs of the parent plot, which were derived from JKQTPBarHorizontalGraph, that match in orientation (as returned by isHorizontal() ).
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*/
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virtual void autoscaleBarWidthAndShift(double maxWidth=0.9, double shrinkFactor=0.8);
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/** \brief equivalent to \c autoscaleBarWidthAndShift(groupWidth,1);
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*/
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void autoscaleBarWidthAndShiftSeparatedGroups(double groupWidth=0.75);
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/** \brief retruns \c true, if the bars are horizontal (JKQTPBarHorizontalGraph) and \c false if they are vertical (JKQTPBarVerticalGraph) */
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virtual bool isHorizontal() const;
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/** \brief set outline and fill color at the same time
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* \see setFillColor_and_darkenedColor()
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*/
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virtual void setColor(QColor c);
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/*! \copydoc shift */
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void setShift(double __value);
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/*! \copydoc shift */
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double getShift() const;
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/*! \copydoc width */
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void setWidth(double __value);
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/*! \copydoc width */
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double getWidth() const;
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/*! \copydoc baseline */
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void setBaseline(double __value);
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/*! \copydoc baseline */
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double getBaseline() const;
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/** \brief sets the fill color and the color together, where fillColor is set to \a fill and the line-color is set to \c fill.darker(colorDarker)
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* \see setColor()
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*/
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void setFillColor_and_darkenedColor(QColor fill, int colorDarker=200);
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protected:
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/** \brief the width of the bargraphs, relative to the distance between the current and the next x-value
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*
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* See the following graphic to understand this concept:
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* \image html bargraph_basics.png
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*/
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double width;
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/** \brief the shift of the bargraphs, relative to the distance between the current and the next x-value
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*
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* See the following graphic to understand this concept:
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* \image html bargraph_basics.png
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*/
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double shift;
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/** \brief baseline of the plot (NOTE: 0 is interpreted as until plot border in log-mode!!!)
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*/
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double baseline;
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/** \brief used to generate stacked plots: returns the upper boundary of this plot in a stack, for the index-th datapoint
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*
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* \note This function returns \a baseline in this implementation. It is implemented in the derived classes JKQTPBarVerticalStackableGraph
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* and JKQTPBarHorizontalStackableGraph. The function is placed here, so the plotting does not have to be reimplemented in the
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* derived classes that allow for stacking, but can be implemented once centrally.
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*/
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virtual double getStackedMax(int index) const;
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/** \brief calls getStackedMax() on the stack parent (if available)
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*
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* \note This function returns \c 0.0 in this implementation. It is implemented in the derived classes JKQTPBarVerticalStackableGraph
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* and JKQTPBarHorizontalStackableGraph. The function is placed here, so the plotting does not have to be reimplemented in the
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* derived classes that allow for stacking, but can be implemented once centrally.
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*/
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virtual double getParentStackedMax(int index) const;
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/** \brief returns \c true, if a stack parent is set (if available)
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*
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* \note This function returns \c false in this implementation. It is implemented in the derived classes JKQTPBarVerticalStackableGraph
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* and JKQTPBarHorizontalStackableGraph. The function is placed here, so the plotting does not have to be reimplemented in the
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* derived classes that allow for stacking, but can be implemented once centrally.
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*/
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virtual bool hasStackParent() const;
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};
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/*! \brief This implements a bar graph with bars starting at \f$ y=0 \f$ to \f$ y=f(x) \f$
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* Optionally several graphs of this type may be stacked on top of each other
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* \ingroup jkqtplotter_barssticks
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*
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* Draw stacked barcharts by connecting several plots by calling \c setStackedParent(belowPlot) for each plot
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* \image html JKQTPBarVerticalGraphStacked.png
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*
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*/
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class JKQTP_LIB_EXPORT JKQTPBarVerticalStackableGraph: public JKQTPBarVerticalGraph {
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Q_OBJECT
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public:
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/** \brief class constructor */
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JKQTPBarVerticalStackableGraph(JKQTBasePlotter* parent=nullptr);
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/** \brief class constructor */
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JKQTPBarVerticalStackableGraph(JKQTPlotter* parent);
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/** \brief stacks this barchart upon the given \a parentGraph */
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void stackUpon(JKQTPBarVerticalStackableGraph* parentGraph);
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/** \brief unstacks this graph (i.e. deletes the parent graph in the stack) */
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void dontStackUpon();
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/** \brief returns the stack parent graph, or \c nullptr */
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const JKQTPBarVerticalStackableGraph* getStackParent() const;
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protected:
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/** \brief if set (!=nullptr), the current plot is drawn stacked onto this plot
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*
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* draw stacked barcharts by connecting several plots by calling \c setStackedParent(belowPlot) for each plot
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*/
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JKQTPBarVerticalStackableGraph* stackParent;
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/** \brief used to generate stacked plots: returns the upper boundary of this plot in a stack, for the index-th datapoint */
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virtual double getStackedMax(int index) const override;
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/** \brief calls getStackedMax() on the stack parent (if available), or \c 0.0 */
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virtual double getParentStackedMax(int index) const override;
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/** \brief returns \c true, if a stack parent is set (if available) */
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virtual bool hasStackParent() const override;
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};
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/*! \brief This implements a bar graph with bars starting at \f$ y=0 \f$ to \f$ y=f(x) \f$
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* and error indicator
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* \ingroup jkqtplotter_barssticks
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*
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* This works much the same as JKQTPBarHorizontalGraph. Here is an example output:
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* \image html plot_bargraphverploterr.png
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*
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*/
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class JKQTP_LIB_EXPORT JKQTPBarVerticalErrorGraph: public JKQTPBarVerticalGraph, public JKQTPYGraphErrors {
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Q_OBJECT
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public:
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/** \brief class constructor */
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JKQTPBarVerticalErrorGraph(JKQTBasePlotter* parent=nullptr);
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/** \brief class constructor */
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JKQTPBarVerticalErrorGraph(JKQTPlotter* parent);
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/** \copydoc JKQTPGraph::usesColumn() */
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virtual bool usesColumn(int c) const override;
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/** \brief get the maximum and minimum y-value of the graph
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*
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* The result is given in the two parameters which are call-by-reference parameters!
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*/
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virtual bool getYMinMax(double& miny, double& maxy, double& smallestGreaterZero) override;
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protected:
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/** \brief this function is used to plot error inidcators before plotting the graphs. */
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virtual void drawErrorsAfter(JKQTPEnhancedPainter& painter) override;
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};
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/*! \brief This implements a bar graph with bars starting at \f$ x=0 \f$ to \f$ x=f(y) \f$
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\ingroup jkqtplotter_barssticks
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This works much the same as JKQTPBarHorizontalGraph. Here is an example output:
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\image html plot_bargraphhorplot.png
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*/
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class JKQTP_LIB_EXPORT JKQTPBarHorizontalGraph: public JKQTPBarVerticalGraph {
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Q_OBJECT
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public:
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/** \brief class constructor */
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JKQTPBarHorizontalGraph(JKQTBasePlotter* parent=nullptr);
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/** \brief class constructor */
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JKQTPBarHorizontalGraph(JKQTPlotter* parent);
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/** \brief plots the graph to the plotter object specified as parent */
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virtual void draw(JKQTPEnhancedPainter& painter) override;
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/** \brief get the maximum and minimum x-value of the graph
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*
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* The result is given in the two parameters which are call-by-reference parameters!
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*/
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virtual bool getXMinMax(double& minx, double& maxx, double& smallestGreaterZero) override;
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/** \brief get the maximum and minimum y-value of the graph
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*
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* The result is given in the two parameters which are call-by-reference parameters!
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*/
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virtual bool getYMinMax(double& miny, double& maxy, double& smallestGreaterZero) override;
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virtual bool isHorizontal() const override;
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};
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/*! \brief This implements a bar graph with bars starting at \f$ y=0 \f$ to \f$ y=f(x) \f$
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* Optionally several graphs of this type may be stacked on top of each other
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* \ingroup jkqtplotter_barssticks
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*
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* Draw stacked barcharts by connecting several plots by calling \c setStackedParent(belowPlot) for each plot
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* \image html JKQTPBarHorizontalGraphStacked.png
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*
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*/
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class JKQTP_LIB_EXPORT JKQTPBarHorizontalStackableGraph: public JKQTPBarHorizontalGraph {
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Q_OBJECT
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public:
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/** \brief class constructor */
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JKQTPBarHorizontalStackableGraph(JKQTBasePlotter* parent=nullptr);
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/** \brief class constructor */
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JKQTPBarHorizontalStackableGraph(JKQTPlotter* parent);
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/** \brief stacks this barchart upon the given \a parentGraph */
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void stackUpon(JKQTPBarHorizontalStackableGraph* parentGraph);
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/** \brief unstacks this graph (i.e. deletes the parent graph in the stack) */
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void dontStackUpon();
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/** \brief returns the stack parent graph, or \c nullptr */
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const JKQTPBarHorizontalStackableGraph* getStackParent() const;
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protected:
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/** \brief if set (!=nullptr), the current plot is drawn stacked onto this plot
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*
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* draw stacked barcharts by connecting several plots by calling \c setStackedParent(belowPlot) for each plot
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*/
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JKQTPBarHorizontalStackableGraph* stackParent;
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/** \brief used to generate stacked plots: returns the upper boundary of this plot in a stack, for the index-th datapoint */
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virtual double getStackedMax(int index) const override;
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/** \brief calls getStackedMax() on the stack parent (if available), or \c 0.0 */
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virtual double getParentStackedMax(int index) const override;
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/** \brief returns \c true, if a stack parent is set (if available) */
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virtual bool hasStackParent() const override;
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};
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/*! \brief This implements a bar graph with bars starting at \f$ x=0 \f$ to \f$ x=f(y) \f$
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* and error indicator
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* \ingroup jkqtplotter_barssticks
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*
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* This works much the same as JKQTPBarHorizontalGraph. Here is an example output:
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* \image html plot_bargraphhorploterr.png
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*
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*/
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class JKQTP_LIB_EXPORT JKQTPBarHorizontalErrorGraph: public JKQTPBarHorizontalGraph, public JKQTPXGraphErrors {
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Q_OBJECT
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public:
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/** \brief class constructor */
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JKQTPBarHorizontalErrorGraph(JKQTBasePlotter* parent=nullptr);
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/** \brief class constructor */
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JKQTPBarHorizontalErrorGraph(JKQTPlotter* parent);
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/** \copydoc JKQTPGraph::usesColumn() */
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virtual bool usesColumn(int c) const override;
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/** \brief get the maximum and minimum x-value of the graph
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*
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* The result is given in the two parameters which are call-by-reference parameters!
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*/
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virtual bool getXMinMax(double& minx, double& maxx, double& smallestGreaterZero) override;
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protected:
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/** \brief this function is used to plot error inidcators before plotting the graphs. */
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virtual void drawErrorsAfter(JKQTPEnhancedPainter& painter) override;
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};
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#endif // jkqtpgraphsbarchart_H
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