view layer/SingleColourLayer.h @ 349:369a197737c7

* Various fixes to object lifetime management, particularly in the spectrum
  layer and for notification of main model deletion.
  The main purpose of this is to improve the behaviour of the spectrum, but I
  think it may also help with #1840922 Various crashes in Layer Summary window.

/* -*- 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 2007 QMUL.
    
    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 _SINGLE_COLOUR_LAYER_H_
#define _SINGLE_COLOUR_LAYER_H_

#include "Layer.h"
#include <QColor>
#include <vector>
#include <map>

class SingleColourLayer : public Layer
{
public:
    virtual void setBaseColour(int);
    virtual int getBaseColour() const;

    virtual bool hasLightBackground() const;

    virtual ColourSignificance getLayerColourSignificance() const {
        return ColourDistinguishes;
    }

    virtual QPixmap getLayerPresentationPixmap(QSize size) const;

    virtual PropertyList getProperties() const;
    virtual QString getPropertyLabel(const PropertyName &) const;
    virtual PropertyType getPropertyType(const PropertyName &) const;
    virtual QString getPropertyGroupName(const PropertyName &) const;
    virtual int getPropertyRangeAndValue(const PropertyName &,
                                         int *min, int *max, int *deflt) const;
    virtual QString getPropertyValueLabel(const PropertyName &,
					  int value) const;
    virtual RangeMapper *getNewPropertyRangeMapper(const PropertyName &) const;
    virtual void setProperty(const PropertyName &, int value);

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

    virtual void setProperties(const QXmlAttributes &attributes);

    virtual void setDefaultColourFor(View *v);

protected:
    SingleColourLayer();

    virtual QColor getBaseQColor() const;
    virtual QColor getBackgroundQColor(View *v) const;
    virtual QColor getForegroundQColor(View *v) const;
    std::vector<QColor> getPartialShades(View *v) const;

    virtual void flagBaseColourChanged() { }
    virtual int getDefaultColourHint(bool /* darkBackground */,
                                     bool & /* impose */) { return -1; }

    typedef std::map<int, int> ColourRefCount;
    static ColourRefCount m_colourRefCount;

    int m_colour;
    bool m_colourExplicitlySet;
};

#endif