/*===========================================================================*\
 *                                                                           *
 *                              OpenFlipper                                  *
 *      Copyright (C) 2001-2009 by Computer Graphics Group, RWTH Aachen      *
 *                           www.openflipper.org                             *
 *                                                                           *
 *---------------------------------------------------------------------------*
 *  This file is part of OpenFlipper.                                        *
 *                                                                           *
 *  OpenFlipper 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 3 of           *
 *  the License, or (at your option) any later version with the              *
 *  following exceptions:                                                    *
 *                                                                           *
 *  If other files instantiate templates or use macros                       *
 *  or inline functions from this file, or you compile this file and         *
 *  link it with other files to produce an executable, this file does        *
 *  not by itself cause the resulting executable to be covered by the        *
 *  GNU Lesser General Public License. This exception does not however       *
 *  invalidate any other reasons why the executable file might be            *
 *  covered by the GNU Lesser General Public License.                        *
 *                                                                           *
 *  OpenFlipper 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 LesserGeneral Public          *
 *  License along with OpenFlipper. If not,                                  *
 *  see <http://www.gnu.org/licenses/>.                                      *
 *                                                                           *
\*===========================================================================*/

/*===========================================================================*\
 *                                                                           *
 *   $Revision: 83 $                                                         *
 *   $Author: moebius $                                                      *
 *   $Date: 2009-02-27 17:31:45 +0100 (Fr, 27. Feb 2009) $                   *
 *                                                                           *
\*===========================================================================*/



//== INCLUDES =================================================================

#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QLabel>
#include <QToolButton>
#include <QAction>
#include <QFrame>
#include <QMouseEvent>
#include <QFont>
#include <QDialog>

#include <OpenFlipper/common/GlobalOptions.hh>

#include "SideElement.hh"

//== IMPLEMENTATION ==========================================================

SideElement::SideElement (SideArea *_parent, QWidget *_w, QString _name) :
  parent_ (_parent),
  widget_ (_w),
  name_ (_name),
  active_ (0),
  dialog_ (0)
{
  QFont font;
  font.setBold (false);

  QHBoxLayout *hl = new QHBoxLayout;

  SideElement::TopArea *tra = new SideElement::TopArea (this);

  label_ = new QLabel (_name);
  label_->setFont (font);

  detachButton_ = new QToolButton ();
  detachButton_->setAutoRaise(true);
  hl->addWidget (label_);
  hl->addStretch (1);
  hl->addWidget (detachButton_);

  
  QIcon detachIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"button-detach.png");
  detachIcon.addPixmap(QPixmap(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"button-detach_over.png"), QIcon::Active);
  detachIcon.addPixmap(QPixmap(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"button-detach_over.png"), QIcon::Selected);
  
  detachAction_ = new QAction ( detachIcon, "", this);
  detachAction_->setToolTip( tr("Show as separate window") );
  detachAction_->setCheckable (true);
  detachButton_->setDefaultAction (detachAction_);
 
  connect (detachAction_, SIGNAL (triggered (bool)), this, SLOT (detachPressed (bool)));

  tra->setLayout (hl);

  QFrame *f = new QFrame ();
  f->setFrameShape (QFrame::HLine);

  mainLayout_ = new QVBoxLayout;

  mainLayout_->addWidget (f);
  mainLayout_->addWidget (tra);
  mainLayout_->addWidget (_w);
  mainLayout_->setSpacing (0);
  mainLayout_->setContentsMargins (1,1,1,1);
  setLayout (mainLayout_);

  _w->hide ();
}

//-----------------------------------------------------------------------------

SideElement::~SideElement ()
{
  if (dialog_)
    dialog_->close ();
  widget_->setParent (0);
}

//-----------------------------------------------------------------------------

void SideElement::labelPress ()
{
  if (dialog_)
  {
    dialog_->raise ();
    dialog_->activateWindow ();
  }
  else
  {
    active_ = !active_;
    if (active_)
      widget_->show ();
    else
      widget_->hide ();

    QFont font;
    font.setBold (active_);
    label_->setFont (font);
  }
}

//-----------------------------------------------------------------------------

void SideElement::detachPressed (bool checked_)
{
  if (checked_)
  {
    mainLayout_->removeWidget (widget_);
    dialog_ = new QDialog(0, Qt::Window);
    dialog_->setWindowTitle (name_);
    dialog_->setWindowIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"button-detach.png"));
    dialog_->setLayout (new QVBoxLayout);
    dialog_->resize (widget_->size ());
    if (window ())
    {
      int x = (window ()->width () - widget_->width ()) / 2;
      x += window ()->x ();
      x = qMax (0, x);
      int y = (window ()->height () - widget_->height ()) / 2;
      y += window ()->y ();
      y = qMax (0, y);
      dialog_->move (x, y);
    }
    dialog_->layout ()->addWidget (widget_);
    dialog_->show ();
    widget_->setAttribute(Qt::WA_DeleteOnClose, false);
    widget_->show ();

    connect (dialog_, SIGNAL(finished (int)), this, SLOT(dialogClosed ()));

    QFont font;
    font.setBold (true);
    font.setItalic (true);
    label_->setFont (font);
  }
  else if (dialog_)
    dialog_->close ();

}

//-----------------------------------------------------------------------------

void SideElement::dialogClosed ()
{
  dialog_ = 0;
  mainLayout_->addWidget (widget_);
  widget_->setAttribute(Qt::WA_DeleteOnClose, true);

  if (active_)
    widget_->show ();
  else
    widget_->hide ();

  detachAction_->setChecked (false);
  QFont font;
  font.setBold (active_);
  label_->setFont (font);
}

//-----------------------------------------------------------------------------

void SideElement::saveState (QSettings &_settings)
{
  _settings.beginGroup (name_);
  _settings.setValue ("Active", active_);
  _settings.setValue ("Detached", (dialog_ != 0));
  _settings.setValue ("DialogGeometry", (dialog_) ? dialog_->saveGeometry (): QByteArray());
  _settings.endGroup ();
}

//-----------------------------------------------------------------------------
void SideElement::restoreState (QSettings &_settings)
{
  _settings.beginGroup (name_);

  active_ = _settings.value ("Active", active_).toBool ();

  if (active_)
    widget_->show ();
  else
    widget_->hide ();

  QFont font;
  font.setBold (active_);
  label_->setFont (font);

  if (_settings.value ("Detached", false).toBool () && !dialog_)
    detachPressed (true);

  if (dialog_)
    dialog_->restoreGeometry (_settings.value ("DialogGeometry").toByteArray ());

  _settings.endGroup ();
}

//-----------------------------------------------------------------------------

SideElement::TopArea::TopArea (SideElement *_e) :
  e_ (_e)
{
}

//-----------------------------------------------------------------------------

void SideElement::TopArea::mousePressEvent (QMouseEvent *_event)
{
  e_->labelPress ();
  _event->accept ();
}

//=============================================================================
//=============================================================================