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plottable-graph.h
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1 /***************************************************************************
2 ** **
3 ** QCustomPlot, an easy to use, modern plotting widget for Qt **
4 ** Copyright (C) 2011, 2012, 2013, 2014 Emanuel Eichhammer **
5 ** **
6 ** This program is free software: you can redistribute it and/or modify **
7 ** it under the terms of the GNU General Public License as published by **
8 ** the Free Software Foundation, either version 3 of the License, or **
9 ** (at your option) any later version. **
10 ** **
11 ** This program is distributed in the hope that it will be useful, **
12 ** but WITHOUT ANY WARRANTY; without even the implied warranty of **
13 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the **
14 ** GNU General Public License for more details. **
15 ** **
16 ** You should have received a copy of the GNU General Public License **
17 ** along with this program. If not, see http://www.gnu.org/licenses/. **
18 ** **
19 ****************************************************************************
20 ** Author: Emanuel Eichhammer **
21 ** Website/Contact: http://www.qcustomplot.com/ **
22 ** Date: 07.04.14 **
23 ** Version: 1.2.1 **
24 ****************************************************************************/
26 #ifndef QCP_PLOTTABLE_GRAPH_H
27 #define QCP_PLOTTABLE_GRAPH_H
28 
29 #include "../global.h"
30 #include "../range.h"
31 #include "../plottable.h"
32 #include "../painter.h"
33 
34 class QCPPainter;
35 class QCPAxis;
36 
37 class QCP_LIB_DECL QCPData
38 {
39 public:
40  QCPData();
41  QCPData(double key, double value);
42  double key, value;
43  double keyErrorPlus, keyErrorMinus;
44  double valueErrorPlus, valueErrorMinus;
45 };
46 Q_DECLARE_TYPEINFO(QCPData, Q_MOVABLE_TYPE);
47 
55 typedef QMap<double, QCPData> QCPDataMap;
56 typedef QMapIterator<double, QCPData> QCPDataMapIterator;
57 typedef QMutableMapIterator<double, QCPData> QCPDataMutableMapIterator;
58 
59 
60 class QCP_LIB_DECL QCPGraph : public QCPAbstractPlottable
61 {
62  Q_OBJECT
64  Q_PROPERTY(LineStyle lineStyle READ lineStyle WRITE setLineStyle)
65  Q_PROPERTY(QCPScatterStyle scatterStyle READ scatterStyle WRITE setScatterStyle)
66  Q_PROPERTY(ErrorType errorType READ errorType WRITE setErrorType)
67  Q_PROPERTY(QPen errorPen READ errorPen WRITE setErrorPen)
68  Q_PROPERTY(double errorBarSize READ errorBarSize WRITE setErrorBarSize)
69  Q_PROPERTY(bool errorBarSkipSymbol READ errorBarSkipSymbol WRITE setErrorBarSkipSymbol)
70  Q_PROPERTY(QCPGraph* channelFillGraph READ channelFillGraph WRITE setChannelFillGraph)
71  Q_PROPERTY(bool adaptiveSampling READ adaptiveSampling WRITE setAdaptiveSampling)
73 public:
79  enum LineStyle { lsNone
80 
81  ,lsLine
82  ,lsStepLeft
83  ,lsStepRight
84  ,lsStepCenter
85  ,lsImpulse
86  };
87  Q_ENUMS(LineStyle)
91  enum ErrorType { etNone
92  ,etKey
93  ,etValue
94  ,etBoth
95  };
96  Q_ENUMS(ErrorType)
97 
98  explicit QCPGraph(QCPAxis *keyAxis, QCPAxis *valueAxis);
99  virtual ~QCPGraph();
100 
101  // getters:
102  QCPDataMap *data() const { return mData; }
103  LineStyle lineStyle() const { return mLineStyle; }
104  QCPScatterStyle scatterStyle() const { return mScatterStyle; }
105  ErrorType errorType() const { return mErrorType; }
106  QPen errorPen() const { return mErrorPen; }
107  double errorBarSize() const { return mErrorBarSize; }
108  bool errorBarSkipSymbol() const { return mErrorBarSkipSymbol; }
109  QCPGraph *channelFillGraph() const { return mChannelFillGraph.data(); }
110  bool adaptiveSampling() const { return mAdaptiveSampling; }
111 
112  // setters:
113  void setData(QCPDataMap *data, bool copy=false);
114  void setData(const QVector<double> &key, const QVector<double> &value);
115  void setDataKeyError(const QVector<double> &key, const QVector<double> &value, const QVector<double> &keyError);
116  void setDataKeyError(const QVector<double> &key, const QVector<double> &value, const QVector<double> &keyErrorMinus, const QVector<double> &keyErrorPlus);
117  void setDataValueError(const QVector<double> &key, const QVector<double> &value, const QVector<double> &valueError);
118  void setDataValueError(const QVector<double> &key, const QVector<double> &value, const QVector<double> &valueErrorMinus, const QVector<double> &valueErrorPlus);
119  void setDataBothError(const QVector<double> &key, const QVector<double> &value, const QVector<double> &keyError, const QVector<double> &valueError);
120  void setDataBothError(const QVector<double> &key, const QVector<double> &value, const QVector<double> &keyErrorMinus, const QVector<double> &keyErrorPlus, const QVector<double> &valueErrorMinus, const QVector<double> &valueErrorPlus);
121  void setLineStyle(LineStyle ls);
122  void setScatterStyle(const QCPScatterStyle &style);
123  void setErrorType(ErrorType errorType);
124  void setErrorPen(const QPen &pen);
125  void setErrorBarSize(double size);
126  void setErrorBarSkipSymbol(bool enabled);
127  void setChannelFillGraph(QCPGraph *targetGraph);
128  void setAdaptiveSampling(bool enabled);
129 
130  // non-property methods:
131  void addData(const QCPDataMap &dataMap);
132  void addData(const QCPData &data);
133  void addData(double key, double value);
134  void addData(const QVector<double> &keys, const QVector<double> &values);
135  void removeDataBefore(double key);
136  void removeDataAfter(double key);
137  void removeData(double fromKey, double toKey);
138  void removeData(double key);
139 
140  // reimplemented virtual methods:
141  virtual void clearData();
142  virtual double selectTest(const QPointF &pos, bool onlySelectable, QVariant *details=0) const;
143  using QCPAbstractPlottable::rescaleAxes;
144  using QCPAbstractPlottable::rescaleKeyAxis;
145  using QCPAbstractPlottable::rescaleValueAxis;
146  void rescaleAxes(bool onlyEnlarge, bool includeErrorBars) const; // overloads base class interface
147  void rescaleKeyAxis(bool onlyEnlarge, bool includeErrorBars) const; // overloads base class interface
148  void rescaleValueAxis(bool onlyEnlarge, bool includeErrorBars) const; // overloads base class interface
149 
150 protected:
151  // property members:
152  QCPDataMap *mData;
153  QPen mErrorPen;
154  LineStyle mLineStyle;
155  QCPScatterStyle mScatterStyle;
156  ErrorType mErrorType;
157  double mErrorBarSize;
158  bool mErrorBarSkipSymbol;
159  QPointer<QCPGraph> mChannelFillGraph;
160  bool mAdaptiveSampling;
161 
162  // reimplemented virtual methods:
163  virtual void draw(QCPPainter *painter);
164  virtual void drawLegendIcon(QCPPainter *painter, const QRectF &rect) const;
165  virtual QCPRange getKeyRange(bool &foundRange, SignDomain inSignDomain=sdBoth) const;
166  virtual QCPRange getValueRange(bool &foundRange, SignDomain inSignDomain=sdBoth) const;
167  virtual QCPRange getKeyRange(bool &foundRange, SignDomain inSignDomain, bool includeErrors) const; // overloads base class interface
168  virtual QCPRange getValueRange(bool &foundRange, SignDomain inSignDomain, bool includeErrors) const; // overloads base class interface
169 
170  // introduced virtual methods:
171  virtual void drawFill(QCPPainter *painter, QVector<QPointF> *lineData) const;
172  virtual void drawScatterPlot(QCPPainter *painter, QVector<QCPData> *scatterData) const;
173  virtual void drawLinePlot(QCPPainter *painter, QVector<QPointF> *lineData) const;
174  virtual void drawImpulsePlot(QCPPainter *painter, QVector<QPointF> *lineData) const;
175 
176  // non-virtual methods:
177  void getPreparedData(QVector<QCPData> *lineData, QVector<QCPData> *scatterData) const;
178  void getPlotData(QVector<QPointF> *lineData, QVector<QCPData> *scatterData) const;
179  void getScatterPlotData(QVector<QCPData> *scatterData) const;
180  void getLinePlotData(QVector<QPointF> *linePixelData, QVector<QCPData> *scatterData) const;
181  void getStepLeftPlotData(QVector<QPointF> *linePixelData, QVector<QCPData> *scatterData) const;
182  void getStepRightPlotData(QVector<QPointF> *linePixelData, QVector<QCPData> *scatterData) const;
183  void getStepCenterPlotData(QVector<QPointF> *linePixelData, QVector<QCPData> *scatterData) const;
184  void getImpulsePlotData(QVector<QPointF> *linePixelData, QVector<QCPData> *scatterData) const;
185  void drawError(QCPPainter *painter, double x, double y, const QCPData &data) const;
186  void getVisibleDataBounds(QCPDataMap::const_iterator &lower, QCPDataMap::const_iterator &upper) const;
187  int countDataInBounds(const QCPDataMap::const_iterator &lower, const QCPDataMap::const_iterator &upper, int maxCount) const;
188  void addFillBasePoints(QVector<QPointF> *lineData) const;
189  void removeFillBasePoints(QVector<QPointF> *lineData) const;
190  QPointF lowerFillBasePoint(double lowerKey) const;
191  QPointF upperFillBasePoint(double upperKey) const;
192  const QPolygonF getChannelFillPolygon(const QVector<QPointF> *lineData) const;
193  int findIndexBelowX(const QVector<QPointF> *data, double x) const;
194  int findIndexAboveX(const QVector<QPointF> *data, double x) const;
195  int findIndexBelowY(const QVector<QPointF> *data, double y) const;
196  int findIndexAboveY(const QVector<QPointF> *data, double y) const;
197  double pointDistance(const QPointF &pixelPoint) const;
198 
199  friend class QCustomPlot;
200  friend class QCPLegend;
201 };
202 
203 #endif // QCP_PLOTTABLE_GRAPH_H
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