comparison layer/ImageLayer.h @ 303:46faec7aae12

* Phase 1 of an image layer.

+/* -*- 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 2006-2007 Chris Cannam and 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 _IMAGE_LAYER_H_
+#define _IMAGE_LAYER_H_
+
+#include "Layer.h"
+#include "data/model/ImageModel.h"
+
+#include <QObject>
+#include <QColor>
+#include <QImage>
+
+#include <map>
+
+class View;
+class QPainter;
+
+class ImageLayer : public Layer
+{
+    Q_OBJECT
+
+public:
+    ImageLayer();
+
+    virtual void paint(View *v, QPainter &paint, QRect rect) const;
+
+    virtual QString getFeatureDescription(View *v, QPoint &) const;
+
+    virtual bool snapToFeatureFrame(View *v, int &frame,
+				    size_t &resolution,
+				    SnapType snap) const;
+
+    virtual void drawStart(View *v, QMouseEvent *);
+    virtual void drawDrag(View *v, QMouseEvent *);
+    virtual void drawEnd(View *v, QMouseEvent *);
+
+    virtual void editStart(View *v, QMouseEvent *);
+    virtual void editDrag(View *v, QMouseEvent *);
+    virtual void editEnd(View *v, QMouseEvent *);
+
+    virtual void moveSelection(Selection s, size_t newStartFrame);
+    virtual void resizeSelection(Selection s, Selection newSize);
+    virtual void deleteSelection(Selection s);
+
+    virtual void copy(Selection s, Clipboard &to);
+    virtual bool paste(const Clipboard &from, int frameOffset,
+                       bool interactive);
+
+    virtual bool editOpen(View *, QMouseEvent *); // on double-click
+
+    virtual const Model *getModel() const { return m_model; }
+    void setModel(ImageModel *model);
+
+    virtual PropertyList getProperties() const;
+    virtual QString getPropertyLabel(const PropertyName &) const;
+    virtual PropertyType getPropertyType(const PropertyName &) const;
+    virtual int getPropertyRangeAndValue(const PropertyName &,
+                                         int *min, int *max, int *deflt) const;
+    virtual QString getPropertyValueLabel(const PropertyName &,
+					  int value) const;
+    virtual void setProperty(const PropertyName &, int value);
+
+    virtual ColourSignificance getLayerColourSignificance() const {
+        return ColourAbsent;
+    }
+
+    virtual bool isLayerScrollable(const View *v) const;
+
+    virtual bool isLayerEditable() const { return true; }
+
+    virtual int getCompletion(View *) const { return m_model->getCompletion(); }
+
+    virtual bool getValueExtents(float &min, float &max,
+                                 bool &logarithmic, QString &unit) const;
+
+    virtual QString toXmlString(QString indent = "",
+				QString extraAttributes = "") const;
+
+    virtual void setLayerDormant(const View *v, bool dormant);
+
+    void setProperties(const QXmlAttributes &attributes);
+
+protected:
+    ImageModel::PointList getLocalPoints(View *v, int x, int y) const;
+
+    float getImageAspect(QString name) const;
+    QImage getImage(View *v, QString name, QSize maxSize) const;
+
+    //!!! how to reap no-longer-used images?
+
+    typedef std::map<QString, QImage> ImageMap;
+    typedef std::map<const View *, ImageMap> ViewImageMap;
+
+    static ImageMap m_images;
+    mutable ViewImageMap m_scaled;
+
+    ImageModel *m_model;
+    bool m_editing;
+    QPoint m_editOrigin;
+    ImageModel::Point m_originalPoint;
+    ImageModel::Point m_editingPoint;
+    ImageModel::EditCommand *m_editingCommand;
+};
+
+#endif
+