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1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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2
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3 /*
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4 Sonic Visualiser
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5 An audio file viewer and annotation editor.
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6 Centre for Digital Music, Queen Mary, University of London.
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7 This file copyright 2006-2013 Chris Cannam and QMUL.
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8
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9 This program is free software; you can redistribute it and/or
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10 modify it under the terms of the GNU General Public License as
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11 published by the Free Software Foundation; either version 2 of the
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12 License, or (at your option) any later version. See the file
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13 COPYING included with this distribution for more information.
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14 */
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15
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16 #ifndef COLOUR_SCALE_LAYER_H
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17 #define COLOUR_SCALE_LAYER_H
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18
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19 #include <QString>
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20 #include <QColor>
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21
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22 class LayerGeometryProvider;
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23
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24 /**
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25 * Interface for layers in which a colour scale represents (or can
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26 * sometimes represent, depending on the display mode) the sample
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27 * value. For example, TimeValueLayer uses colour scale when in
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28 * segment mode and so provides this interface for use by the
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29 * LogColourScale or LinearColourScale scale renderers.
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30 */
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31 class ColourScaleLayer
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32 {
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33 public:
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34 virtual QString getScaleUnits() const = 0;
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35 virtual QColor getColourForValue(LayerGeometryProvider *v, double value) const = 0;
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36 };
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37
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38 #endif
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39
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