comparison layer/SingleColourLayer.h @ 287:cd2492c5fe45

* Add SingleColourLayer to manage colours for layers that have a single
  predominant colour (i.e. most of them).

+/* -*- 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>
+
+class SingleColourLayer : public Layer
+{
+public:
+    virtual void setBaseColour(int);
+    virtual int getBaseColour() const;
+
+    virtual bool hasLightBackground() const;
+
+    virtual ColourSignificance getLayerColourSignificance() const {
+        return ColourDistinguishes;
+    }
+
+    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 QString toXmlString(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::multiset<int> ColourIndexPool;
+    static ColourIndexPool m_usedColourIndices;
+
+    int m_colour;
+};
+
+#endif