view layer/TimeRulerLayer.h @ 1551:e79731086b0f

Fixes to NoteLayer, particularly to calculation of vertical scale when model unit is not Hz. To avoid inconsistency we now behave as if the unit is always Hz from the point of view of the external API and display, converting at the point where we obtain values from the events themselves. Also various fixes to editing.

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Chris Cannam.
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef SV_TIME_RULER_H
#define SV_TIME_RULER_H

#include "SingleColourLayer.h"

#include <QRect>
#include <QColor>

class View;
class Model;
class QPainter;

class TimeRulerLayer : public SingleColourLayer
{
    Q_OBJECT

public:
    TimeRulerLayer();

    void paint(LayerGeometryProvider *v, QPainter &paint, QRect rect) const override;

    void setModel(ModelId);
    ModelId getModel() const override { return m_model; }

    enum LabelHeight { LabelTop, LabelMiddle, LabelBottom };
    void setLabelHeight(LabelHeight h) { m_labelHeight = h; }
    LabelHeight getLabelHeight() const { return m_labelHeight; }

    bool snapToFeatureFrame(LayerGeometryProvider *, sv_frame_t &, int &,
                            SnapType, int) const override;

    ColourSignificance getLayerColourSignificance() const override {
        return ColourIrrelevant;
    }

    bool getValueExtents(double &, double &, bool &, QString &) const override {
        return false;
    }

    QString getLayerPresentationName() const override;

    int getVerticalScaleWidth(LayerGeometryProvider *, bool, QPainter &) const override { return 0; }

    void toXml(QTextStream &stream, QString indent = "",
                       QString extraAttributes = "") const override;

    void setProperties(const QXmlAttributes &attributes) override;

    bool canExistWithoutModel() const override { return true; }

protected:
    ModelId m_model;
    LabelHeight m_labelHeight;

    int getDefaultColourHint(bool dark, bool &impose) override;

    int64_t getMajorTickUSec(LayerGeometryProvider *, bool &quarterTicks) const;
    int getXForUSec(LayerGeometryProvider *, double usec) const;
};

#endif