1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
2 
3 /*
4     Sonic Visualiser
5     An audio file viewer and annotation editor.
6     Centre for Digital Music, Queen Mary, University of London.
7     This file copyright 2006 Chris Cannam.
8 
9     This program is free software; you can redistribute it and/or
10     modify it under the terms of the GNU General Public License as
11     published by the Free Software Foundation; either version 2 of the
12     License, or (at your option) any later version.  See the file
13     COPYING included with this distribution for more information.
14 */
15 
16 #ifndef SV_TIME_RULER_H
17 #define SV_TIME_RULER_H
18 
19 #include "SingleColourLayer.h"
20 
21 #include <QRect>
22 #include <QColor>
23 
24 class View;
25 class Model;
26 class QPainter;
27 
28 class TimeRulerLayer : public SingleColourLayer
29 {
30     Q_OBJECT
31 
32 public:
33     TimeRulerLayer();
34 
35     void paint(LayerGeometryProvider *v, QPainter &paint, QRect rect) const override;
36 
37     void setModel(ModelId);
getModel()38     ModelId getModel() const override { return m_model; }
39 
40     enum LabelHeight { LabelTop, LabelMiddle, LabelBottom };
setLabelHeight(LabelHeight h)41     void setLabelHeight(LabelHeight h) { m_labelHeight = h; }
getLabelHeight()42     LabelHeight getLabelHeight() const { return m_labelHeight; }
43 
44     bool snapToFeatureFrame(LayerGeometryProvider *, sv_frame_t &, int &,
45                             SnapType, int) const override;
46 
getLayerColourSignificance()47     ColourSignificance getLayerColourSignificance() const override {
48         return ColourIrrelevant;
49     }
50 
getValueExtents(double &,double &,bool &,QString &)51     bool getValueExtents(double &, double &, bool &, QString &) const override {
52         return false;
53     }
54 
55     QString getLayerPresentationName() const override;
56 
getVerticalScaleWidth(LayerGeometryProvider *,bool,QPainter &)57     int getVerticalScaleWidth(LayerGeometryProvider *, bool, QPainter &) const override { return 0; }
58 
59     void toXml(QTextStream &stream, QString indent = "",
60                        QString extraAttributes = "") const override;
61 
62     void setProperties(const QXmlAttributes &attributes) override;
63 
canExistWithoutModel()64     bool canExistWithoutModel() const override { return true; }
65 
66 protected:
67     ModelId m_model;
68     LabelHeight m_labelHeight;
69 
70     int getDefaultColourHint(bool dark, bool &impose) override;
71 
72     int64_t getMajorTickUSec(LayerGeometryProvider *, bool &quarterTicks) const;
73     int getXForUSec(LayerGeometryProvider *, double usec) const;
74 };
75 
76 #endif
77