src/GUI/graphview.h

   1 #ifndef GRAPHVIEW_H
   2 #define GRAPHVIEW_H
   3
   4 #include <QGraphicsView>
   5 #include <QList>
   6 #include "data/graph.h"
   7 #include "palette.h"
   8 #include "units.h"
   9 #include "infoitem.h"
  10
  11
  12 class AxisItem;
  13 class AxisLabelItem;
  14 class SliderItem;
  15 class SliderInfoItem;
  16 class GraphItem;
  17 class PathItem;
  18 class GridItem;
  19 class QGraphicsSimpleTextItem;
  20 class GraphicsScene;
  21 class QGestureEvent;
  22 class QPinchGesture;
  23
  24 class GraphView : public QGraphicsView
  25 {
  26         Q_OBJECT
  27
  28 public:
  29         GraphView(QWidget *parent = 0);
  30         ~GraphView();
  31
  32         bool isEmpty() const {return _graphs.isEmpty();}
  33         const QList<KV<QString, QString> > &info() const {return _info->info();}
  34         void clear();
  35
  36         void plot(QPainter *painter, const QRectF &target, qreal scale);
  37
  38         void setPalette(const Palette &palette);
  39         void setGraphWidth(int width);
  40         void showGrid(bool show);
  41         void showSliderInfo(bool show);
  42         void useOpenGL(bool use);
  43         void useAntiAliasing(bool use);
  44
  45         void setSliderPosition(qreal pos);
  46         void setSliderColor(const QColor &color);
  47
  48         qreal sliderPosition() const {return _sliderPos;}
  49
  50 signals:
  51         void sliderPositionChanged(qreal);
  52
  53 protected:
  54         void addGraph(GraphItem *graph);
  55         void removeGraph(GraphItem *graph);
  56         void setGraphType(GraphType type);
  57         void setUnits(Units units);
  58
  59         void resizeEvent(QResizeEvent *e);
  60         void mousePressEvent(QMouseEvent *e);
  61         void wheelEvent(QWheelEvent *e);
  62         void changeEvent(QEvent *e);
  63         void paintEvent(QPaintEvent *e);
  64         bool event(QEvent *event);
  65
  66         const QString &yLabel() const {return _yLabel;}
  67         const QString &yUnits() const {return _yUnits;}
  68         qreal yScale() const {return _yScale;}
  69         qreal yOffset() const {return _yOffset;}
  70         void setYLabel(const QString &label);
  71         void setYUnits(const QString &units);
  72         void setYScale(qreal scale) {_yScale = scale;}
  73         void setYOffset(qreal offset) {_yOffset = offset;}
  74
  75         void setSliderPrecision(int precision) {_precision = precision;}
  76         void setMinYRange(qreal range) {_minYRange = range;}
  77
  78         QRectF bounds() const;
  79         void redraw();
  80         void addInfo(const QString &key, const QString &value);
  81         void clearInfo();
  82
  83         GraphType _graphType;
  84         Units _units;
  85         Palette _palette;
  86         int _width;
  87
  88 private slots:
  89         void emitSliderPositionChanged(const QPointF &pos);
  90         void newSliderPosition(const QPointF &pos);
  91
  92 private:
  93         void redraw(const QSizeF &size);
  94         void setXUnits();
  95         void updateSliderPosition();
  96         void updateSliderInfo();
  97         void removeItem(QGraphicsItem *item);
  98         void addItem(QGraphicsItem *item);
  99         bool singleGraph() const;
 100         bool gestureEvent(QGestureEvent *event);
 101         void pinchGesture(QPinchGesture *gesture);
 102
 103         GraphicsScene *_scene;
 104
 105         AxisItem *_xAxis, *_yAxis;
 106         AxisLabelItem *_xAxisLabel, *_yAxisLabel;
 107         SliderItem *_slider;
 108         SliderInfoItem *_sliderInfo;
 109         InfoItem *_info;
 110         GridItem *_grid;
 111         QGraphicsSimpleTextItem *_message;
 112         QList<GraphItem*> _graphs;
 113
 114         QRectF _bounds;
 115         qreal _sliderPos;
 116
 117         qreal _xScale, _yScale;
 118         qreal _yOffset;
 119         QString _xUnits, _yUnits;
 120         QString _xLabel, _yLabel;
 121         int _precision;
 122         qreal _minYRange;
 123
 124         qreal _zoom;
 125 };
 126
 127 #endif // GRAPHVIEW_H