comparison layer/LayerFactory.cpp @ 0:2a4f26e85b4c

initial import

+/* -*- c-basic-offset: 4 -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    A waveform viewer and audio annotation editor.
+    Chris Cannam, Queen Mary University of London, 2005
+    
+    This is experimental software.  Not for distribution.
+*/
+
+#include "LayerFactory.h"
+
+#include "WaveformLayer.h"
+#include "SpectrogramLayer.h"
+#include "TimeRulerLayer.h"
+#include "TimeInstantLayer.h"
+#include "TimeValueLayer.h"
+#include "Colour3DPlotLayer.h"
+
+#include "model/RangeSummarisableTimeValueModel.h"
+#include "model/DenseTimeValueModel.h"
+#include "model/SparseOneDimensionalModel.h"
+#include "model/SparseTimeValueModel.h"
+#include "model/DenseThreeDimensionalModel.h"
+
+LayerFactory *
+LayerFactory::m_instance = new LayerFactory;
+
+LayerFactory *
+LayerFactory::instance()
+{
+    return m_instance;
+}
+
+LayerFactory::~LayerFactory()
+{
+}
+
+QString
+LayerFactory::getLayerPresentationName(LayerType type)
+{
+    switch (type) {
+    case Waveform:     return Layer::tr("Waveform");
+    case Spectrogram:  return Layer::tr("Spectrogram");
+    case TimeRuler:    return Layer::tr("Ruler");
+    case TimeInstants: return Layer::tr("Time Instants");
+    case TimeValues:   return Layer::tr("Time Values");
+    case Colour3DPlot: return Layer::tr("Colour 3D Plot");
+
+    case MelodicRangeSpectrogram:
+	// The user can change all the parameters of this after the
+	// fact -- there's nothing permanently melodic-range about it
+	// that should be encoded in its name
+	return Layer::tr("Spectrogram");
+    }
+
+    return Layer::tr("Layer");
+}
+
+LayerFactory::LayerTypeSet
+LayerFactory::getValidLayerTypes(Model *model)
+{
+    LayerTypeSet types;
+
+    if (dynamic_cast<DenseThreeDimensionalModel *>(model)) {
+	types.insert(Colour3DPlot);
+    }
+
+    if (dynamic_cast<DenseTimeValueModel *>(model)) {
+	types.insert(Spectrogram);
+	types.insert(MelodicRangeSpectrogram);
+    }
+
+    if (dynamic_cast<RangeSummarisableTimeValueModel *>(model)) {
+	types.insert(Waveform);
+    }
+
+    if (dynamic_cast<SparseOneDimensionalModel *>(model)) {
+	types.insert(TimeInstants);
+    }
+
+    if (dynamic_cast<SparseTimeValueModel *>(model)) {
+	types.insert(TimeValues);
+    }
+
+    // We don't count TimeRuler here as it doesn't actually display
+    // the data, although it can be backed by any model
+
+    return types;
+}
+
+LayerFactory::LayerType
+LayerFactory::getLayerType(Layer *layer)
+{
+    if (dynamic_cast<WaveformLayer *>(layer)) return Waveform;
+    if (dynamic_cast<SpectrogramLayer *>(layer)) return Spectrogram;
+    if (dynamic_cast<TimeRulerLayer *>(layer)) return TimeRuler;
+    if (dynamic_cast<TimeInstantLayer *>(layer)) return TimeInstants;
+    if (dynamic_cast<TimeValueLayer *>(layer)) return TimeValues;
+    if (dynamic_cast<Colour3DPlotLayer *>(layer)) return Colour3DPlot;
+    return UnknownLayer;
+}
+
+void
+LayerFactory::setModel(Layer *layer, Model *model)
+{
+    if (trySetModel<WaveformLayer, RangeSummarisableTimeValueModel>(layer, model))
+	return;
+
+    if (trySetModel<SpectrogramLayer, DenseTimeValueModel>(layer, model))
+	return;
+
+    if (trySetModel<TimeRulerLayer, Model>(layer, model))
+	return;
+
+    if (trySetModel<TimeInstantLayer, SparseOneDimensionalModel>(layer, model))
+	return;
+
+    if (trySetModel<TimeValueLayer, SparseTimeValueModel>(layer, model))
+	return;
+
+    if (trySetModel<Colour3DPlotLayer, DenseThreeDimensionalModel>(layer, model))
+	return;
+
+    if (trySetModel<SpectrogramLayer, DenseTimeValueModel>(layer, model))
+	return;
+}
+
+Layer *
+LayerFactory::createLayer(LayerType type, View *view,
+			  Model *model, int channel)
+{
+    Layer *layer = 0;
+
+    switch (type) {
+
+    case Waveform:
+	layer = new WaveformLayer(view);
+	static_cast<WaveformLayer *>(layer)->setChannel(channel);
+	break;
+
+    case Spectrogram:
+	layer = new SpectrogramLayer(view);
+	static_cast<SpectrogramLayer *>(layer)->setChannel(channel);
+	break;
+
+    case TimeRuler:
+	layer = new TimeRulerLayer(view);
+	break;
+
+    case TimeInstants:
+	layer = new TimeInstantLayer(view);
+	break;
+
+    case TimeValues:
+	layer = new TimeValueLayer(view);
+	break;
+
+    case Colour3DPlot:
+	layer = new Colour3DPlotLayer(view);
+	break;
+
+    case MelodicRangeSpectrogram: 
+	layer = new SpectrogramLayer(view, SpectrogramLayer::MelodicRange);
+	static_cast<SpectrogramLayer *>(layer)->setChannel(channel);
+	break;
+    }
+
+    if (!layer) {
+	std::cerr << "LayerFactory::createLayer: Unknown layer type " 
+		  << type << std::endl;
+    } else {
+	setModel(layer, model);
+	std::cerr << "LayerFactory::createLayer: Setting object name "
+		  << getLayerPresentationName(type).toStdString() << " on " << layer << std::endl;
+	layer->setObjectName(getLayerPresentationName(type));
+    }
+
+    return layer;
+}
+