view layer/TimeRulerLayer.h @ 317:e251c3599ea8

* Make RemoteFile far more pervasive, and use it for local files as well
  so that we can handle both transparently.  Make it shallow copy with
  reference counting, so it can be used by value without having to worry
  about the cache file lifetime.  Use RemoteFile for MainWindow file-open
  functions, etc

/* -*- 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 _TIME_RULER_H_
#define _TIME_RULER_H_

#include "SingleColourLayer.h"

#include <QRect>
#include <QColor>

class View;
class Model;
class QPainter;

class TimeRulerLayer : public SingleColourLayer
{
    Q_OBJECT

public:
    TimeRulerLayer();

    virtual void paint(View *v, QPainter &paint, QRect rect) const;

    void setModel(Model *);
    virtual const Model *getModel() const { return m_model; }

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

    virtual bool snapToFeatureFrame(View *, int &, size_t &, SnapType) const;

    virtual ColourSignificance getLayerColourSignificance() const {
        return ColourIrrelevant;
    }

    virtual bool getValueExtents(float &, float &, bool &, QString &) const {
        return false;
    }

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

    void setProperties(const QXmlAttributes &attributes);

protected:
    Model *m_model;
    LabelHeight m_labelHeight;

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

    int getMajorTickSpacing(View *, bool &quarterTicks) const;
};

#endif