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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 2007 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 _SINGLE_COLOUR_LAYER_H_
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17 #define _SINGLE_COLOUR_LAYER_H_
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18
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19 #include "Layer.h"
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20 #include <QColor>
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21 #include <vector>
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22 #include <map>
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23
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24 class SingleColourLayer : public Layer
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25 {
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26 Q_OBJECT
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27
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28 public:
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29 /**
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30 * Set the colour used to draw primary items in the layer. The
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31 * colour value is a colour database index as returned by
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32 * ColourDatabase::getColourIndex().
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33 */
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34 virtual void setBaseColour(int);
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35
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36 /**
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37 * Retrieve the current primary drawing colour, as a
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38 * ColourDatabase index value.
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39 */
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40 virtual int getBaseColour() const;
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41
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42 /**
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43 * Return true if the layer currently has a dark colour on a light
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44 * background, false if it has a light colour on a dark
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45 * background.
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46 */
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47 virtual bool hasLightBackground() const;
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48
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49 /**
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50 * Implements Layer::getLayerColourSignificance()
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51 */
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52 virtual ColourSignificance getLayerColourSignificance() const {
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53 return ColourDistinguishes;
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54 }
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55
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56 virtual QPixmap getLayerPresentationPixmap(QSize size) const;
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57
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58 virtual PropertyList getProperties() const;
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59 virtual QString getPropertyLabel(const PropertyName &) const;
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60 virtual PropertyType getPropertyType(const PropertyName &) const;
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61 virtual QString getPropertyGroupName(const PropertyName &) const;
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62 virtual int getPropertyRangeAndValue(const PropertyName &,
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63 int *min, int *max, int *deflt) const;
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64 virtual QString getPropertyValueLabel(const PropertyName &,
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65 int value) const;
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66 virtual RangeMapper *getNewPropertyRangeMapper(const PropertyName &) const;
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67 virtual void setProperty(const PropertyName &, int value);
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68
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69 virtual void toXml(QTextStream &stream, QString indent = "",
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70 QString extraAttributes = "") const;
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71
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72 virtual void setProperties(const QXmlAttributes &attributes);
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73
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74 virtual void setDefaultColourFor(View *v);
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75
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76 protected:
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77 SingleColourLayer();
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78
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79 virtual QColor getBaseQColor() const;
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80 virtual QColor getBackgroundQColor(View *v) const;
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81 virtual QColor getForegroundQColor(View *v) const;
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82 std::vector<QColor> getPartialShades(View *v) const;
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83
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84 virtual void flagBaseColourChanged() { }
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85 virtual int getDefaultColourHint(bool /* darkBackground */,
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86 bool & /* impose */) { return -1; }
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87
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88 typedef std::map<int, int> ColourRefCount;
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89 static ColourRefCount m_colourRefCount;
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90
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91 int m_colour;
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92 bool m_colourExplicitlySet;
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93 bool m_defaultColourSet;
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94 };
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95
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96 #endif
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