SciFigs/ImageLayer.h

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/***************************************************************************
**
**  This file is part of SciFigs.
**
**  This library is free software; you can redistribute it and/or
**  modify it under the terms of the GNU Lesser General Public
**  License as published by the Free Software Foundation; either
**  version 2.1 of the License, or (at your option) any later version.
**
**  This file is distributed in the hope that it will be useful, but WITHOUT
**  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
**  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
**  License for more details.
**
**  You should have received a copy of the GNU Lesser General Public
**  License along with this library; if not, write to the Free Software
**  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
**
**  See http://www.geopsy.org for more information.
**
**  Created : 2003-10-20
**  Authors :
**    Marc Wathelet
**    Marc Wathelet (ULg, Liège, Belgium)
**    Marc Wathelet (LGIT, Grenoble, France)
**
***************************************************************************/

#ifndef IMAGELAYER_H
#define IMAGELAYER_H

#include <math.h>

#include "GraphContentLayer.h"

namespace SciFigs {

class ImageLayerProperties;

class SCIFIGS_EXPORT ImageLayer: public GraphContentLayer
{
  Q_OBJECT
  Q_PROPERTY(QString imageFile READ fileName WRITE setFileName)
  Q_PROPERTY(double xScale READ xScale WRITE setXScale)
  Q_PROPERTY(double yScale READ yScale WRITE setYScale)
  Q_PROPERTY(double xOrigin READ xOrigin WRITE setXOrigin)
  Q_PROPERTY(double yOrigin READ yOrigin WRITE setYOrigin)
public:
  ImageLayer(AxisWindow * parent=0);
  ~ImageLayer();

  virtual const QString& xml_tagName() const {return xmlImageLayerTag;}
  static const QString xmlImageLayerTag;

  void loadImage(QString fileName);
  void loadImage();
  void colorHistogram(Rect r);
  enum TrackingModes{Scale=0, Histogram};
  virtual bool trackRectangle(int id, double rx1,double ry1, double rx2, double ry2, Qt::KeyboardModifiers m);
  virtual bool mouseReleaseEvent (QMouseEvent * e, int id=-1);
  virtual void toggleTrackingAction(bool checked, int id=-1);
  virtual Rect boundingRect() const;
  void grayFilter(int tol,int threshold);
  void lowPassFilter(int hThres, int sThres, int vThres);
  void highPassFilter(int hThres, int sThres, int vThres);
  void redPassFilter();

  QString fileName() const {return _fileName;}
  void setFileName(QString s) {_fileName=s;}

  const Point2D& origin() const {return _origin;}
  Point2D& origin() {return _origin;}
  void setOrigin(const Point2D& o) {_origin=o;}

  const Point2D& scale() const {return _scale;}
  Point2D& scale() {return _scale;}
  void setScale(const Point2D& s) {_scale=s;}

  double xScale() const {return _scale.x();}
  void setXScale(double s) {_scale.setX(s);}
  double yScale() const {return _scale.y();}
  void setYScale(double s) {_scale.setY(s);}

  double xOrigin() const {return _origin.x();}
  void setXOrigin(double s) {_origin.setX(s);}
  double yOrigin() const {return _origin.y();}
  void setYOrigin(double s) {_origin.setY(s);}

  void setScaling();

  QRgb * image(int& n);

  virtual bool hasProperties() {return true;}
  virtual void addProperties(PropertyProxy * pp);
  virtual void removeProperties(PropertyProxy * pp);
  virtual void properties(PropertyWidget * w) const;
  virtual void setProperty(uint wid, int pid, QVariant val);

  class ReferencePoint: public XMLClass
  {
  public:
    ReferencePoint() : XMLClass() {}
    ReferencePoint(const ReferencePoint& o)
      : XMLClass(), _name(o._name), _image(o._image), _real(o._real) {}

    virtual const QString& xml_tagName() const {return xmlReferencePointTag;}
    static const QString xmlReferencePointTag;

    void setName(const QString& n) {_name=n;}
    const QString& name() const {return _name;}

    void setImage(const QPoint& p) {_image=p;}
    const QPoint& image() const {return _image;}
    QPoint& image() {return _image;}

    void setReal(const Point2D& p) {_real=p;}
    const Point2D& real() const {return _real;}
    Point2D& real() {return _real;}
  protected:
    virtual void xml_writeProperties(XML_WRITEPROPERTIES_ARGS) const;
    virtual XMLMember xml_member(XML_MEMBER_ARGS);
    virtual bool xml_setProperty(XML_SETPROPERTY_ARGS);
  private:
    QString _name;
    QPoint _image;
    Point2D _real;
  };

  void setReferences(const QList<ReferencePoint>& ref) {_references=ref;}
  const QList<ReferencePoint>& references() const {return _references;}

  static void scaling(const QList<ReferencePoint> ref, Point2D& origin, Point2D& scale);
protected:
  virtual void paintData(const LayerPainterRequest& lp, QPainter& p, double dotpercm) const;
  virtual void xml_writeProperties(XML_WRITEPROPERTIES_ARGS) const;
  virtual void xml_writeChildren(XML_WRITECHILDREN_ARGS) const;
  virtual XMLMember xml_member(XML_MEMBER_ARGS);
  virtual void xml_polish(XML_POLISH_ARGS) {Q_UNUSED(context); loadImage();}
private:
  inline QPoint r2i(const Point2D& p) const;

  QImage _trueImage;
  QTransform _transform;
  QString _fileName;
  Point2D _origin;
  Point2D _scale;
  QList<ReferencePoint> _references;
  static uint _tabImage;
signals:
  void editedColors(QRgb * colors, int numC);
  void pointPicked(QPoint p);
};

inline QPoint ImageLayer::r2i(const Point2D& p) const
{
  return QPoint((int)round((p.x()-_origin.x())/_scale.x()),
                (int)round((p.y()-_origin.y())/_scale.y()));
}


} // namespace SciFigs

#endif // IMAGELAYER_H