Chris@58: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@59:     Sonic Visualiser
Chris@59:     An audio file viewer and annotation editor.
Chris@59:     Centre for Digital Music, Queen Mary, University of London.
Chris@59:     This file copyright 2006 Chris Cannam.
Chris@0:     
Chris@59:     This program is free software; you can redistribute it and/or
Chris@59:     modify it under the terms of the GNU General Public License as
Chris@59:     published by the Free Software Foundation; either version 2 of the
Chris@59:     License, or (at your option) any later version.  See the file
Chris@59:     COPYING included with this distribution for more information.
Chris@0: */
Chris@0: 
Chris@1311: #ifndef SV_LAYER_FACTORY_H
Chris@1311: #define SV_LAYER_FACTORY_H
Chris@0: 
Chris@0: #include <QString>
Chris@0: #include <set>
Chris@0: 
Chris@0: class Layer;
Chris@0: class Model;
Chris@360: class Clipboard;
Chris@0: 
Chris@0: class LayerFactory
Chris@0: {
Chris@0: public:
Chris@0:     enum LayerType {
Chris@0: 
Chris@1266:         // Standard layers
Chris@1266:         Waveform,
Chris@1266:         Spectrogram,
Chris@1266:         TimeRuler,
Chris@1266:         TimeInstants,
Chris@1266:         TimeValues,
Chris@1266:         Notes,
Chris@1266:         FlexiNotes,
Chris@1266:         Regions,
Chris@1266:         Text,
Chris@303:         Image,
Chris@1266:         Colour3DPlot,
Chris@133:         Spectrum,
Chris@193:         Slice,
Chris@0: 
Chris@1266:         // Layers with different initial parameters
Chris@1266:         MelodicRangeSpectrogram,
Chris@1266:         PeakFrequencySpectrogram,
Chris@0: 
Chris@1266:         // Not-a-layer-type
Chris@1266:         UnknownLayer = 255
Chris@0:     };
Chris@0: 
Chris@125:     static LayerFactory *getInstance();
Chris@0:     
Chris@0:     virtual ~LayerFactory();
Chris@0: 
Chris@0:     typedef std::set<LayerType> LayerTypeSet;
Chris@0:     LayerTypeSet getValidLayerTypes(Model *model);
Chris@962: 
Chris@962:     /**
Chris@962:      * Return the set of layer types that an end user should be
Chris@962:      * allowed to create, empty, for subsequent editing.
Chris@962:      */
Chris@17:     LayerTypeSet getValidEmptyLayerTypes();
Chris@0: 
Chris@6:     LayerType getLayerType(const Layer *);
Chris@0: 
Chris@53:     Layer *createLayer(LayerType type);
Chris@0: 
Chris@1455:     /**
Chris@1455:      * Set the default properties of a layer, from the XML string
Chris@1455:      * contained in the LayerDefaults settings group for the given
Chris@1455:      * layer type. Leave unchanged any properties not mentioned in the
Chris@1455:      * settings.
Chris@1455:      */
Chris@326:     void setLayerDefaultProperties(LayerType type, Layer *layer);
Chris@326: 
Chris@1455:     /**
Chris@1455:      * Set the properties of a layer, from the XML string
Chris@1455:      * provided. Leave unchanged any properties not mentioned.
Chris@1455:      */
Chris@1455:     void setLayerProperties(Layer *layer, QString xmlString);
Chris@1455: 
Chris@0:     QString getLayerPresentationName(LayerType type);
Chris@0: 
Chris@193:     bool isLayerSliceable(const Layer *);
Chris@193: 
Chris@0:     void setModel(Layer *layer, Model *model);
Chris@17:     Model *createEmptyModel(LayerType type, Model *baseModel);
Chris@0: 
Chris@53:     int getChannel(Layer *layer);
Chris@53:     void setChannel(Layer *layer, int channel);
Chris@53: 
Chris@17:     QString getLayerIconName(LayerType);
Chris@6:     QString getLayerTypeName(LayerType);
Chris@6:     LayerType getLayerTypeForName(QString);
Chris@6: 
Chris@360:     LayerType getLayerTypeForClipboardContents(const Clipboard &);
Chris@360: 
Chris@0: protected:
Chris@0:     template <typename LayerClass, typename ModelClass>
Chris@0:     bool trySetModel(Layer *layerBase, Model *modelBase) {
Chris@1266:         LayerClass *layer = dynamic_cast<LayerClass *>(layerBase);
Chris@1266:         if (!layer) return false;
Chris@1266:         ModelClass *model = dynamic_cast<ModelClass *>(modelBase);
Chris@1266:         if (!model) return false;
Chris@1266:         layer->setModel(model);
Chris@1266:         return true;
Chris@0:     }
Chris@0: 
Chris@0:     static LayerFactory *m_instance;
Chris@0: };
Chris@0: 
Chris@0: #endif
Chris@0: