comparison layer/TextLayer.h @ 35:10ba9276a315

* Add TextModel and TextLayer types
* Make View refresh work better when editing a model (previously edits might
  not be refreshed if their visible changed area extended beyond the strict
  frame range that was being modified in the model)
* Add phase-adjusted instantaneous frequency display to spectrogram layer
  (still a work in progress)
* Pull maths aliases out into a separate header in dsp/maths so MathUtilities
  can be included without introducing them

+/* -*- 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, 2005-2006
+    
+    This is experimental software.  Not for distribution.
+*/
+
+#ifndef _TEXT_LAYER_H_
+#define _TEXT_LAYER_H_
+
+#include "base/Layer.h"
+#include "model/TextModel.h"
+
+#include <QObject>
+#include <QColor>
+
+class View;
+class QPainter;
+
+class TextLayer : public Layer
+{
+    Q_OBJECT
+
+public:
+    TextLayer(View *w);
+
+    virtual void paint(QPainter &paint, QRect rect) const;
+
+    virtual QString getFeatureDescription(QPoint &) const;
+
+    virtual bool snapToFeatureFrame(int &frame,
+				    size_t &resolution,
+				    SnapType snap) const;
+
+    virtual void drawStart(QMouseEvent *);
+    virtual void drawDrag(QMouseEvent *);
+    virtual void drawEnd(QMouseEvent *);
+
+    virtual void editStart(QMouseEvent *);
+    virtual void editDrag(QMouseEvent *);
+    virtual void editEnd(QMouseEvent *);
+
+    virtual const Model *getModel() const { return m_model; }
+    void setModel(TextModel *model);
+
+    virtual PropertyList getProperties() const;
+    virtual PropertyType getPropertyType(const PropertyName &) const;
+    virtual int getPropertyRangeAndValue(const PropertyName &,
+					   int *min, int *max) const;
+    virtual QString getPropertyValueLabel(const PropertyName &,
+					  int value) const;
+    virtual void setProperty(const PropertyName &, int value);
+
+    void setBaseColour(QColor);
+    QColor getBaseColour() const { return m_colour; }
+
+    virtual bool isLayerScrollable() const;
+
+    virtual bool isLayerEditable() const { return true; }
+
+    virtual int getCompletion() const { return m_model->getCompletion(); }
+
+    virtual QString toXmlString(QString indent = "",
+				QString extraAttributes = "") const;
+
+    void setProperties(const QXmlAttributes &attributes);
+
+protected:
+    int getYForHeight(float height) const;
+    float getHeightForY(int y) const;
+
+    TextModel::PointList getLocalPoints(int x, int y) const;
+
+    TextModel *m_model;
+    bool m_editing;
+    TextModel::Point m_originalPoint;
+    TextModel::Point m_editingPoint;
+    TextModel::EditCommand *m_editingCommand;
+    QColor m_colour;
+};
+
+#endif
+