// *************************************************************************
//
// Copyleft 2004-2007 Bruno PAGES  .
//
// This file is part of the BOUML Uml Toolkit.
//
// 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.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// e-mail : bouml@free.fr
// home   : http://bouml.free.fr
//
// *************************************************************************

#ifdef WIN32
#pragma warning (disable: 4150)
#endif

#include <qpainter.h>
#include <qpopupmenu.h> 

#include "TemplateCanvas.h"
#include "CdClassCanvas.h"
#include "BrowserClass.h"
#include "ClassData.h"
#include "UmlCanvas.h"
#include "myio.h"

TemplateCanvas::TemplateCanvas(CdClassCanvas * c)
    : DiagramCanvas(c->the_canvas(), -1), cl(c) {
  update();
}

TemplateCanvas::~TemplateCanvas() {
}

void TemplateCanvas::update() {
  setZ(cl->z() + 0.5);
  
  const ClassData * d = (ClassData *) cl->get_bn()->get_data();
  int i, n;
  
  text = d->get_formalparam_name(0);
  
  for (i = 1, n = d->get_n_formalparams(); i != n; i += 1)
    text += QString(", ") + d->get_formalparam_name(i);
  
  QRect r = cl->rect();
  QFontMetrics fm(the_canvas()->get_font(UmlNormalFont));
  int eight = (int) (8 * the_canvas()->zoom());
  int wi = fm.width(text) + eight;
  
  if (wi <= (r.width() / 2))
    wi = r.width() / 2;
  resize(wi, fm.height() + eight);
  move(r.right() -  r.width() / 3 + 100000, r.top() - height()/2);
}

void TemplateCanvas::change_scale() {
  // does nothing, update is called by its class
}

void TemplateCanvas::moveBy(double dx, double dy) {
  if (dx < 80000) {
    // hand moving
    if (!the_canvas()->do_zoom() && !cl->selected())
      // will move the template
      cl->moveBy(dx, dy);
  }
  else {
    // from update_pos
    QCanvasRectangle::moveBy(dx - 100000, dy);
    if (!the_canvas()->do_zoom() && !cl->selected())
      set_center100();
  }
}

void TemplateCanvas::upper() {
  cl->upper(); // will update the template z
}

void TemplateCanvas::lower() {
  cl->lower(); // will update the template z
}

void TemplateCanvas::set_z(double) {
  // does nothing, cl z modification call update
}

void TemplateCanvas::draw(QPainter & p) {
  if (! visible()) return;
  
  p.setBackgroundMode(::Qt::OpaqueMode);
  
  QRect r = rect();
  
  p.fillRect(r, ::Qt::white);
  p.setPen(::Qt::DotLine);
  p.drawRect(r);
  p.setPen(::Qt::SolidLine);
  
  p.setFont(the_canvas()->get_font(UmlNormalFont));
  p.drawText(r, ::Qt::AlignCenter, text);
  
  FILE * fp = svg();

  if (fp != 0) {
    fputs("<g>\n", fp);
    fprintf(fp, "\t<rect fill=\"white\" stroke-dasharray=\"4,4\" stroke=\"black\" stroke-width=\"1\" stroke-opacity=\"1\""
	    " x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" />\n",
	    r.x(), r.y(), r.width() - 1, r.height() - 1);
    draw_text(r, ::Qt::AlignCenter, text,
	      p.font(), fp);
    fputs("</g>\n", fp);
  }

}

UmlCode TemplateCanvas::type() const {
  return UmlTemplate;
}

void TemplateCanvas::open() {
  cl->open();
}

void TemplateCanvas::menu(const QPoint & p) {
  cl->menu(p);
}

const char * TemplateCanvas::may_start(UmlCode &) const {
  return "illegal";
}

const char * TemplateCanvas::may_connect(UmlCode &, const DiagramItem *) const {
  return "illegal";
}

void TemplateCanvas::save(QTextStream &, bool, QString &) const {
  // does nothing
}