src/GUI/graphview.h

   1 #ifndef GRAPHVIEW_H
   2 #define GRAPHVIEW_H
   3
   4 #include <QGraphicsView>
   5 #include <QList>
   6 #include <QSet>
   7 #include "data/graph.h"
   8 #include "palette.h"
   9 #include "units.h"
  10 #include "infoitem.h"
  11
  12
  13 class AxisItem;
  14 class SliderItem;
  15 class SliderInfoItem;
  16 class GraphItem;
  17 class PathItem;
  18 class GridItem;
  19 class QGraphicsSimpleTextItem;
  20
  21 class GraphView : public QGraphicsView
  22 {
  23         Q_OBJECT
  24
  25 public:
  26         GraphView(QWidget *parent = 0);
  27         ~GraphView();
  28
  29         bool isEmpty() const {return _graphs.isEmpty();}
  30         const QList<KV> &info() const {return _info->info();}
  31         void clear();
  32
  33         void plot(QPainter *painter, const QRectF &target, qreal scale);
  34
  35         void setPalette(const Palette &palette);
  36         void setGraphWidth(int width);
  37         void showGrid(bool show);
  38         void showSliderInfo(bool show);
  39         void useOpenGL(bool use);
  40         void useAntiAliasing(bool use);
  41
  42         void setSliderPosition(qreal pos);
  43         void setSliderColor(const QColor &color);
  44
  45 signals:
  46         void sliderPositionChanged(qreal);
  47
  48 protected:
  49         void addGraph(GraphItem *graph, int id = 0);
  50
  51         void showGraph(bool show, int id = 0);
  52         void setGraphType(GraphType type);
  53         void setUnits(Units units);
  54
  55         const QString &yLabel() const {return _yLabel;}
  56         const QString &yUnits() const {return _yUnits;}
  57         qreal yScale() const {return _yScale;}
  58         qreal yOffset() const {return _yOffset;}
  59         void setYLabel(const QString &label);
  60         void setYUnits(const QString &units);
  61         void setYScale(qreal scale) {_yScale = scale;}
  62         void setYOffset(qreal offset) {_yOffset = offset;}
  63
  64         void setSliderPrecision(int precision) {_precision = precision;}
  65         void setMinYRange(qreal range) {_minYRange = range;}
  66
  67         QRectF bounds() const;
  68         void redraw();
  69         void addInfo(const QString &key, const QString &value);
  70         void clearInfo();
  71         void skipColor() {_palette.nextColor();}
  72
  73         void changeEvent(QEvent *e);
  74
  75         QList<GraphItem*> _graphs;
  76         GraphType _graphType;
  77
  78 private slots:
  79         void emitSliderPositionChanged(const QPointF &pos);
  80         void newSliderPosition(const QPointF &pos);
  81
  82 private:
  83         void redraw(const QSizeF &size);
  84         void setXUnits();
  85         void createXLabel();
  86         void createYLabel();
  87         void updateSliderPosition();
  88         void updateSliderInfo();
  89         void removeItem(QGraphicsItem *item);
  90         void addItem(QGraphicsItem *item);
  91
  92         void resizeEvent(QResizeEvent *e);
  93         void mousePressEvent(QMouseEvent *e);
  94
  95         Units _units;
  96         qreal _xScale, _yScale;
  97         qreal _yOffset;
  98         QString _xUnits, _yUnits;
  99         QString _xLabel, _yLabel;
 100         int _precision;
 101         qreal _minYRange;
 102         qreal _sliderPos;
 103
 104         QGraphicsScene *_scene;
 105
 106         AxisItem *_xAxis, *_yAxis;
 107         SliderItem *_slider;
 108         SliderInfoItem *_sliderInfo;
 109         InfoItem *_info;
 110         GridItem *_grid;
 111         QGraphicsSimpleTextItem *_message;
 112
 113         QList<GraphItem*> _visible;
 114         QSet<int> _hide;
 115         QRectF _bounds;
 116         Palette _palette;
 117         int _width;
 118 };
 119
 120 #endif // GRAPHVIEW_H