/******************************************************************/
/* KPresenter - (c) by Reginald Stadlbauer 1997-1998              */
/* Version: 0.1.0                                                 */
/* Author: Reginald Stadlbauer                                    */
/* E-Mail: reggie@kde.org                                         */
/* Homepage: http://boch35.kfunigraz.ac.at/~rs                    */
/* needs c++ library Qt (http://www.troll.no)                     */
/* written for KDE (http://www.kde.org)                           */
/* needs mico (http://diamant.vsb.cs.uni-frankfurt.de/~mico/)     */
/* needs OpenParts and Kom (weis@kde.org)                         */
/* License: GNU GPL                                               */
/******************************************************************/
/* Module: autoform object                                        */
/******************************************************************/

#include "kpautoformobject.h"
#include "kpautoformobject.moc"

/******************************************************************/
/* Class: KPAutoformObject                                        */
/******************************************************************/

/*================ default constructor ===========================*/
KPAutoformObject::KPAutoformObject()
  : KPObject(), pen(), brush(), filename(), gColor1(red), gColor2(green), atfInterp(0,""), pix()
{
  lineBegin = L_NORMAL;
  lineEnd = L_NORMAL;
  gradient = 0;
  fillType = FT_BRUSH;
  gType = BCT_GHORZ;
  drawShadow = false;
  redrawPix = false;
}

/*================== overloaded constructor ======================*/
KPAutoformObject::KPAutoformObject(QPen _pen,QBrush _brush,QString _filename,LineEnd _lineBegin,LineEnd _lineEnd,
				   FillType _fillType,QColor _gColor1,QColor _gColor2,BCType _gType)
  : KPObject(), pen(_pen), brush(_brush), filename(_filename), gColor1(_gColor1), gColor2(_gColor2), atfInterp(0,""), pix()
{
  atfInterp.load(filename);
  lineBegin = _lineBegin;
  lineEnd = _lineEnd;
  gType = _gType;
  fillType = _fillType;
  drawShadow = false;
  redrawPix = true;

  if (fillType == FT_GRADIENT)
    {
      gradient = new KPGradient(gColor1,gColor2,gType,KSize(1,1));
      redrawPix = true;
      pix.resize(getSize());
    }
  else
    gradient = 0;
}

/*================================================================*/
void KPAutoformObject::setSize(int _width,int _height)
{
  KPObject::setSize(_width,_height);
  if (move) return;

  if (fillType == FT_GRADIENT && gradient)
    {
      gradient->setSize(getSize());
      redrawPix = true;
      pix.resize(getSize());
    }
}

/*================================================================*/
void KPAutoformObject::resizeBy(int _dx,int _dy)
{
  KPObject::resizeBy(_dx,_dy);
  if (move) return;

  if (fillType == FT_GRADIENT && gradient)
    {
      gradient->setSize(getSize());
      redrawPix = true;
      pix.resize(getSize());
    }
}

/*====================== set filename ============================*/
void KPAutoformObject::setFileName(QString _filename)
{
  filename = _filename;
  atfInterp.load(filename);
}

/*================================================================*/
void KPAutoformObject::setFillType(FillType _fillType)
{ 
  fillType = _fillType; 

  if (fillType == FT_BRUSH && gradient) 
    {
      delete gradient;
      gradient = 0;
    }
  if (fillType == FT_GRADIENT && !gradient)
    {
      gradient = new KPGradient(gColor1,gColor2,gType,getSize());
      redrawPix = true;
      pix.resize(getSize());
    }
}

/*========================= save =================================*/
void KPAutoformObject::save(ostream& out)
{
  out << indent << "<ORIG x=\"" << orig.x() << "\" y=\"" << orig.y() << "\"/>" << endl;
  out << indent << "<SIZE width=\"" << ext.width() << "\" height=\"" << ext.height() << "\"/>" << endl;
  out << indent << "<SHADOW distance=\"" << shadowDistance << "\" direction=\""
      << static_cast<int>(shadowDirection) << "\" red=\"" << shadowColor.red() << "\" green=\"" << shadowColor.green()
      << "\" blue=\"" << shadowColor.blue() << "\"/>" << endl;
  out << indent << "<EFFECTS effect=\"" << static_cast<int>(effect) << "\" effect2=\"" 
      << static_cast<int>(effect2) << "\"/>" << endl;
  out << indent << "<PEN red=\"" << pen.color().red() << "\" green=\"" << pen.color().green()
      << "\" blue=\"" << pen.color().blue() << "\" width=\"" << pen.width()
      << "\" style=\"" << static_cast<int>(pen.style()) << "\"/>" << endl;
  out << indent << "<BRUSH red=\"" << brush.color().red() << "\" green=\"" << brush.color().green()
      << "\" blue=\"" << brush.color().blue() << "\" style=\"" << static_cast<int>(brush.style()) << "\"/>" << endl;
  out << indent << "<LINEBEGIN value=\"" << static_cast<int>(lineBegin) << "\"/>" << endl;
  out << indent << "<LINEEND value=\"" << static_cast<int>(lineEnd) << "\"/>" << endl;
  out << indent << "<PRESNUM value=\"" << presNum << "\"/>" << endl;
  out << indent << "<ANGLE value=\"" << angle << "\"/>" << endl;

  QString afDir = qstrdup(KApplication::kde_datadir());
  afDir += "/kpresenter/autoforms/";
  int len = afDir.length();
  QString str = qstrdup(filename);
  str = str.remove(0,len);
  out << indent << "<FILENAME value=\"" << str << "\"/>" << endl;
  out << indent << "<FILLTYPE value=\"" << static_cast<int>(fillType) << "\"/>" << endl;
  out << indent << "<GRADIENT red1=\"" << gColor1.red() << "\" green1=\"" << gColor1.green()
      << "\" blue1=\"" << gColor1.blue() << "\" red2=\"" << gColor2.red() << "\" green2=\"" 
      << gColor2.green() << "\" blue2=\"" << gColor2.blue() << "\" type=\""
      << static_cast<int>(gType) << "\"/>" << endl;
}

/*========================== load ================================*/
void KPAutoformObject::load(KOMLParser& parser,vector<KOMLAttrib>& lst) 
{
  string tag;
  string name;

  while (parser.open(0L,tag))
    {
      KOMLParser::parseTag(tag.c_str(),name,lst);
	      
      // orig
      if (name == "ORIG")
	{
	  KOMLParser::parseTag(tag.c_str(),name,lst);
	  vector<KOMLAttrib>::const_iterator it = lst.begin();
	  for(;it != lst.end();it++)
	    {
	      if ((*it).m_strName == "x")
		orig.setX(atoi((*it).m_strValue.c_str()));
	      if ((*it).m_strName == "y")
		orig.setY(atoi((*it).m_strValue.c_str()));
	    }
	}

      // size
      else if (name == "SIZE")
	{
	  KOMLParser::parseTag(tag.c_str(),name,lst);
	  vector<KOMLAttrib>::const_iterator it = lst.begin();
	  for(;it != lst.end();it++)
	    {
	      if ((*it).m_strName == "width")
		ext.setWidth(atoi((*it).m_strValue.c_str()));
	      if ((*it).m_strName == "height")
		ext.setHeight(atoi((*it).m_strValue.c_str()));
	    }
	}

      // shadow
      else if (name == "SHADOW")
	{
	  KOMLParser::parseTag(tag.c_str(),name,lst);
	  vector<KOMLAttrib>::const_iterator it = lst.begin();
	  for(;it != lst.end();it++)
	    {
	      if ((*it).m_strName == "distance")
		shadowDistance = atoi((*it).m_strValue.c_str());
	      if ((*it).m_strName == "direction")
		shadowDirection = (ShadowDirection)atoi((*it).m_strValue.c_str());
	      if ((*it).m_strName == "red")
		shadowColor.setRgb(atoi((*it).m_strValue.c_str()),
				   shadowColor.green(),shadowColor.blue());
	      if ((*it).m_strName == "green")
		shadowColor.setRgb(shadowColor.red(),atoi((*it).m_strValue.c_str()),
				   shadowColor.blue());
	      if ((*it).m_strName == "blue")
		shadowColor.setRgb(shadowColor.red(),shadowColor.green(),
				   atoi((*it).m_strValue.c_str()));
	    }
	}

      // effects
      else if (name == "EFFECTS")
	{
	  KOMLParser::parseTag(tag.c_str(),name,lst);
	  vector<KOMLAttrib>::const_iterator it = lst.begin();
	  for(;it != lst.end();it++)
	    {
	      if ((*it).m_strName == "effect")
		  effect = (Effect)atoi((*it).m_strValue.c_str());
	      if ((*it).m_strName == "effect2")
		  effect2 = (Effect2)atoi((*it).m_strValue.c_str());
	    }
	}
      // pen
      else if (name == "PEN")
	{
	  KOMLParser::parseTag(tag.c_str(),name,lst);
	  vector<KOMLAttrib>::const_iterator it = lst.begin();
	  for(;it != lst.end();it++)
	    {
	      if ((*it).m_strName == "red")
		pen.setColor(QColor(atoi((*it).m_strValue.c_str()),pen.color().green(),pen.color().blue()));
	      if ((*it).m_strName == "green")
		pen.setColor(QColor(pen.color().red(),atoi((*it).m_strValue.c_str()),pen.color().blue()));
	      if ((*it).m_strName == "blue")
		pen.setColor(QColor(pen.color().red(),pen.color().green(),atoi((*it).m_strValue.c_str())));
	      if ((*it).m_strName == "width")
		pen.setWidth(atoi((*it).m_strValue.c_str()));
	      if ((*it).m_strName == "style")
		pen.setStyle((PenStyle)atoi((*it).m_strValue.c_str()));
	    }
	  setPen(pen);
	}
      
      // brush
      else if (name == "BRUSH")
	{
	  KOMLParser::parseTag(tag.c_str(),name,lst);
	  vector<KOMLAttrib>::const_iterator it = lst.begin();
	  for(;it != lst.end();it++)
	    {
	      if ((*it).m_strName == "red")
		brush.setColor(QColor(atoi((*it).m_strValue.c_str()),brush.color().green(),brush.color().blue()));
	      if ((*it).m_strName == "green")
		brush.setColor(QColor(brush.color().red(),atoi((*it).m_strValue.c_str()),brush.color().blue()));
	      if ((*it).m_strName == "blue")
		brush.setColor(QColor(brush.color().red(),brush.color().green(),atoi((*it).m_strValue.c_str())));
	      if ((*it).m_strName == "style")
		brush.setStyle((BrushStyle)atoi((*it).m_strValue.c_str()));
	    }
	  setBrush(brush);
	}
      
      // angle
      else if (name == "ANGLE")
	{
	  KOMLParser::parseTag(tag.c_str(),name,lst);
	  vector<KOMLAttrib>::const_iterator it = lst.begin();
	  for(;it != lst.end();it++)
	    {
	      if ((*it).m_strName == "value")
		angle = atof((*it).m_strValue.c_str());
	    }
	}

      // lineBegin
      else if (name == "LINEBEGIN")
	{
	  KOMLParser::parseTag(tag.c_str(),name,lst);
	  vector<KOMLAttrib>::const_iterator it = lst.begin();
	  for(;it != lst.end();it++)
	    {
	      if ((*it).m_strName == "value")
		lineBegin = (LineEnd)atoi((*it).m_strValue.c_str());
	    }
	}
 
      // lineEnd
      else if (name == "LINEEND")
	{
	  KOMLParser::parseTag(tag.c_str(),name,lst);
	  vector<KOMLAttrib>::const_iterator it = lst.begin();
	  for(;it != lst.end();it++)
	    {
	      if ((*it).m_strName == "value")
		lineEnd = (LineEnd)atoi((*it).m_strValue.c_str());
	    }
	}

      // presNum
      else if (name == "PRESNUM")
	{
	  KOMLParser::parseTag(tag.c_str(),name,lst);
	  vector<KOMLAttrib>::const_iterator it = lst.begin();
	  for(;it != lst.end();it++)
	    {
	      if ((*it).m_strName == "value")
		presNum = atoi((*it).m_strValue.c_str());
	    }
	}

      // filename
      else if (name == "FILENAME")
	{
	  KOMLParser::parseTag(tag.c_str(),name,lst);
	  vector<KOMLAttrib>::const_iterator it = lst.begin();
	  for(;it != lst.end();it++)
	    {
	      if ((*it).m_strName == "value")
		{
		  filename = (*it).m_strValue.c_str();
		  QString afDir = qstrdup(KApplication::kde_datadir());
		  afDir += "/kpresenter/autoforms/";
		  filename.insert(0,qstrdup(afDir));
		  atfInterp.load(filename);
		}
	    }
	}
      
      // fillType
      else if (name == "FILLTYPE")
	{
	  KOMLParser::parseTag(tag.c_str(),name,lst);
	  vector<KOMLAttrib>::const_iterator it = lst.begin();
	  for(;it != lst.end();it++)
	    {
	      if ((*it).m_strName == "value")
		fillType = static_cast<FillType>(atoi((*it).m_strValue.c_str()));
	    }
	  setFillType(fillType);
	}

      // gradient
      else if (name == "GRADIENT")
	{
	  KOMLParser::parseTag(tag.c_str(),name,lst);
	  vector<KOMLAttrib>::const_iterator it = lst.begin();
	  for(;it != lst.end();it++)
	    {
	      if ((*it).m_strName == "red1")
		gColor1 = QColor(atoi((*it).m_strValue.c_str()),gColor1.green(),gColor1.blue());
	      if ((*it).m_strName == "green1")
		gColor1 = QColor(gColor1.red(),atoi((*it).m_strValue.c_str()),gColor1.blue());
	      if ((*it).m_strName == "blue1")
		gColor1 = QColor(gColor1.red(),gColor1.green(),atoi((*it).m_strValue.c_str()));
	      if ((*it).m_strName == "red2")
		gColor2 = QColor(atoi((*it).m_strValue.c_str()),gColor2.green(),gColor2.blue());
	      if ((*it).m_strName == "green2")
		gColor2 = QColor(gColor2.red(),atoi((*it).m_strValue.c_str()),gColor2.blue());
	      if ((*it).m_strName == "blue2")
		gColor2 = QColor(gColor2.red(),gColor2.green(),atoi((*it).m_strValue.c_str()));
	      if ((*it).m_strName == "type")
		gType = static_cast<BCType>(atoi((*it).m_strValue.c_str()));
	    }
	  setGColor1(gColor1);
	  setGColor2(gColor2);
	  setGType(gType);
	}

      else
	cerr << "Unknown tag '" << tag << "' in AUTOFORM_OBJECT" << endl;    
      
      if (!parser.close(tag))
	{
	  cerr << "ERR: Closing Child" << endl;
	  return;
	}
    }
}

/*========================= draw =================================*/
void KPAutoformObject::draw(QPainter *_painter,int _diffx,int _diffy)
{
  if (move) 
    {
      KPObject::draw(_painter,_diffx,_diffy);
      return;
    }

  int ox = orig.x() - _diffx;
  int oy = orig.y() - _diffy;
  int ow = ext.width();
  int oh = ext.height();
  KRect r;

  _painter->save();
  
  if (shadowDistance > 0)
    {
      drawShadow = true;
      QPen tmpPen(pen);
      pen.setColor(shadowColor);
      QBrush tmpBrush(brush);
      brush.setColor(shadowColor);
      r = _painter->viewport();
      
      if (angle == 0)
	{
	  int sx = ox;
	  int sy = oy;
	  getShadowCoords(sx,sy,shadowDirection,shadowDistance);
			
	  _painter->setViewport(sx,sy,r.width(),r.height());
	  paint(_painter);
	}
      else
	{
	  _painter->setViewport(ox,oy,r.width(),r.height());

	  KRect br = KRect(0,0,ow,oh);
	  int pw = br.width();
	  int ph = br.height();
	  KRect rr = br;
	  int yPos = -rr.y();
	  int xPos = -rr.x();
	  rr.moveTopLeft(KPoint(-rr.width() / 2,-rr.height() / 2));
	  
	  int sx = 0;
	  int sy = 0;
	  getShadowCoords(sx,sy,shadowDirection,shadowDistance);

	  QWMatrix m,mtx,m2;
	  mtx.rotate(angle);
	  m.translate(pw / 2,ph / 2);
	  m2.translate(rr.left() + xPos + sx,rr.top() + yPos + sy);
	  m = m2 * mtx * m;
			
	  _painter->setWorldMatrix(m);
	  paint(_painter);
	}
      
      _painter->setViewport(r);
      pen = tmpPen;
      brush = tmpBrush;
    }

  drawShadow = false;
  
  _painter->restore();
  _painter->save();

  r = _painter->viewport();
  _painter->setViewport(ox,oy,r.width(),r.height());
  
  if (angle == 0)
    paint(_painter);
  else
    {
      KRect br = KRect(0,0,ow,oh);
      int pw = br.width();
      int ph = br.height();
      KRect rr = br;
      int yPos = -rr.y();
      int xPos = -rr.x();
      rr.moveTopLeft(KPoint(-rr.width() / 2,-rr.height() / 2));
      
      QWMatrix m,mtx,m2;
      mtx.rotate(angle);
      m.translate(pw / 2,ph / 2);
      m2.translate(rr.left() + xPos,rr.top() + yPos);
      m = m2 * mtx * m;
      
      _painter->setWorldMatrix(m);
      paint(_painter);
    }

  _painter->setViewport(r);
  
  _painter->restore();

  KPObject::draw(_painter,_diffx,_diffy);
}

/*===================== get angle ================================*/
float KPAutoformObject::getAngle(KPoint p1,QPoint p2)
{
  float _angle = 0.0;

  if (p1.x() == p2.x()) 
    {
      if (p1.y() < p2.y())
	_angle = 270.0;
      else
	_angle = 90.0;
    }
  else
    {
      float x1, x2, y1, y2;
      
      if (p1.x() <= p2.x()) 
	{
	  x1 = p1.x(); y1 = p1.y();
	  x2 = p2.x(); y2 = p2.y();
	}
      else 
	{
	  x2 = p1.x(); y2 = p1.y();
	  x1 = p2.x(); y1 = p2.y();
	}

    float m = -(y2 - y1) / (x2 - x1);
    _angle = atan(m) * RAD_FACTOR;

    if (p1.x() < p2.x()) 
      _angle = 180.0 - _angle;
    else 
      _angle = -_angle;
    }

  return _angle;
}

/*======================== paint =================================*/
void KPAutoformObject::paint(QPainter* _painter)
{
  unsigned int pw = 0,pwOrig = 0,px,py;

  _painter->setPen(pen);
  pwOrig = pen.width() + 3;
  _painter->setBrush(brush);
  
  QPointArray pntArray = atfInterp.getPointArray(ext.width(),ext.height());
  QList<ATFInterpreter::AttribList> atrLs = atfInterp.getAttribList();
  QPointArray pntArray2(pntArray.size());
  for (unsigned int i = 0;i < pntArray.size();i++)
    {
      px = pntArray.at(i).x();
      py = pntArray.at(i).y();
      if (atrLs.at(i)->pwDiv > 0)
	{
	  pw = pwOrig / atrLs.at(i)->pwDiv;
	  if (px < static_cast<unsigned int>(ext.width()) / 2) px += pw;
	  if (py < static_cast<unsigned int>(ext.height()) / 2) py += pw;
	  if (px > static_cast<unsigned int>(ext.width()) / 2) px -= pw;
	  if (py > static_cast<unsigned int>(ext.height()) / 2) py -= pw;
	}
      pntArray2.setPoint(i,px,py);
    }
      
  if (pntArray2.size() > 0)
    {
      if (pntArray2.at(0) == pntArray2.at(pntArray2.size() - 1))
	{
	  if (drawShadow || fillType == FT_BRUSH || !gradient)
	    _painter->drawPolygon(pntArray2);
	  else
	    {
	      if (angle == 0)
		{
		  int ox = _painter->viewport().x() + static_cast<int>(_painter->worldMatrix().dx());
		  int oy = _painter->viewport().y() + static_cast<int>(_painter->worldMatrix().dy());

		  QPointArray pntArray3 = pntArray2.copy();
		  pntArray3.translate(ox,oy);
		  _painter->save();
		  
		  QRegion clipregion(pntArray3);

		  if (_painter->hasClipping())
		    clipregion = _painter->clipRegion().intersect(clipregion);

		  _painter->setClipRegion(clipregion);

		  _painter->drawPixmap(0,0,*gradient->getGradient());

		  _painter->restore();
		}
	      else
		{
		  if (redrawPix)
		    {
		      redrawPix = false;
		      QRegion clipregion(pntArray2);
		      QPicture pic;
		      QPainter p;
		      
		      p.begin(&pic);
		      p.setClipRegion(clipregion);
		      p.drawPixmap(0,0,*gradient->getGradient());
		      p.end();
		      
		      pix.fill(white);
		      QPainter p2;
		      p2.begin(&pix);
		      p2.drawPicture(pic);
		      p2.end();
		    }

		  _painter->drawPixmap(0,0,pix);
		}
	      
	      _painter->setPen(pen);
	      _painter->setBrush(NoBrush);
	      _painter->drawPolygon(pntArray2);
	    }
	}
      else
	{
	  KSize diff1(0,0),diff2(0,0);
	  int _w = pen.width();
	      
	  if (lineBegin != L_NORMAL)
	    diff1 = getBoundingSize(lineBegin,_w);
	      
	  if (lineEnd != L_NORMAL)
	    diff2 = getBoundingSize(lineEnd,_w);
	      
	  if (pntArray.size() > 1)
	    {
	      if (lineBegin != L_NORMAL)
		{
		  KPoint pnt1(pntArray2.at(0)),pnt2(pntArray2.at(1)),pnt3,pnt4(pntArray.at(0));
		  float _angle = getAngle(pnt1,pnt2);
		      
		  switch (static_cast<int>(_angle))
		    {
		    case 0:
		      {
			pnt3.setX(pnt4.x() - diff1.width() / 2);
			pnt3.setY(pnt1.y());
		      } break;
		    case 180:
		      {
			pnt3.setX(pnt4.x() + diff1.width() / 2);
			pnt3.setY(pnt1.y());
		      } break;
		    case 90:
		      {
			pnt3.setX(pnt1.x());
			pnt3.setY(pnt4.y() - diff1.width() / 2);
		      } break;
		    case 270:
		      {
			pnt3.setX(pnt1.x());
			pnt3.setY(pnt4.y() + diff1.width() / 2);
		      } break;
		    default: 
		      pnt3 = pnt1;
		      break;
		    }
		  
		  drawFigure(lineBegin,_painter,pnt3,pen.color(),_w,_angle);
		}
		  
	      if (lineEnd != L_NORMAL)
		{
		  KPoint pnt1(pntArray2.at(pntArray2.size() - 1)),pnt2(pntArray2.at(pntArray2.size() - 2));
		  KPoint  pnt3,pnt4(pntArray.at(pntArray.size() - 1));
		  float _angle = getAngle(pnt1,pnt2);
		      
		  switch ((int)_angle)
		    {
		    case 0:
		      {
			pnt3.setX(pnt4.x() - diff2.width() / 2);
			pnt3.setY(pnt1.y());
		      } break;
		    case 180:
		      {
			pnt3.setX(pnt4.x() + diff2.width() / 2);
			pnt3.setY(pnt1.y());
		      } break;
		    case 90:
		      {
			pnt3.setX(pnt1.x());
			pnt3.setY(pnt4.y() - diff2.width() / 2);
		      } break;
		    case 270:
		      {
			pnt3.setX(pnt1.x());
			pnt3.setY(pnt4.y() + diff2.width() / 2);
		      } break;
		    default: 
		      pnt3 = pnt1;
		      break;
		    }
		  
		  drawFigure(lineEnd,_painter,pnt3,pen.color(),_w,_angle);
		}
	    }
	  
	  _painter->setPen(pen);
	  _painter->drawPolyline(pntArray2);
	}
      
    }
}