/*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2006-2008 Igor Ulyanov <iulyanov@gmail.com>

 *

 * 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; version 2 of the License

 *

 * 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

 */

#include <QPushButton>

#include <QBuffer>

#include <QUuid>

#include <QBitmap>

#include <QPainter>

#include <QLinearGradient>

#include <QColor>

#include <QTextStream>

#include <QApplication>

#include "hwconsts.h"

#include "mapContainer.h"

HWMapContainer::HWMapContainer(QWidget * parent) :

  QWidget(parent), mainLayout(this)

{

#if QT_VERSION >= 0x040300

  mainLayout.setContentsMargins(QApplication::style()->pixelMetric(QStyle::PM_LayoutLeftMargin),

                1,

                QApplication::style()->pixelMetric(QStyle::PM_LayoutRightMargin),

                QApplication::style()->pixelMetric(QStyle::PM_LayoutBottomMargin));

#endif

  imageButt=new QPushButton(this);

  imageButt->setObjectName("imageButt");

  imageButt->setFixedSize(256 + 8, 128 + 8);

  imageButt->setFlat(true);

  imageButt->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);//QSizePolicy::Minimum, QSizePolicy::Minimum);

  mainLayout.addWidget(imageButt);

  connect(imageButt, SIGNAL(clicked()), this, SLOT(setRandomSeed()));

  setRandomSeed();

  chooseMap=new QComboBox(this);

  QDir tmpdir;

  tmpdir.cd(datadir->absolutePath());

  tmpdir.cd("Maps");

  tmpdir.setFilter(QDir::Dirs | QDir::NoDotAndDotDot);

  QStringList mapList=tmpdir.entryList(QStringList("*"));

  mapList.push_front(QComboBox::tr("generated map..."));

  chooseMap->addItems(mapList);

  connect(chooseMap, SIGNAL(activated(int)), this, SLOT(mapChanged(int)));

  mainLayout.addWidget(chooseMap);

  mainLayout.setSizeConstraint(QLayout::SetFixedSize);//SetMinimumSize

}

void HWMapContainer::setImage(const QImage newImage)

{

  QPixmap px(256, 128);

  QPixmap pxres(256, 128);

  QPainter p(&pxres);

  px.fill(Qt::yellow);

  QBitmap bm = QBitmap::fromImage(newImage);

  px.setMask(bm);

  QLinearGradient linearGrad(QPoint(128, 0), QPoint(128, 128));

  linearGrad.setColorAt(1, QColor(0, 0, 192));

  linearGrad.setColorAt(0, QColor(66, 115, 225));

  p.fillRect(QRect(0, 0, 256, 128), linearGrad);

  p.drawPixmap(QPoint(0, 0), px);

  imageButt->setIcon(pxres);

  imageButt->setIconSize(QSize(256, 128));

  chooseMap->setCurrentIndex(0);

}

void HWMapContainer::mapChanged(int index)

{

  if(!index) {

    changeImage();

    return;

  }

  loadMap(index);

  emit mapChanged(chooseMap->currentText());

}

void HWMapContainer::loadMap(int index)

{

  QPixmap mapImage;

  if(!mapImage.load(datadir->absolutePath() + "/Maps/" + chooseMap->currentText() + "/map.png")) {

    changeImage();

    chooseMap->setCurrentIndex(0);

    return;

  }

  imageButt->setIcon(mapImage.scaled(256, 128));

  QFile mapCfgFile(datadir->absolutePath() + "/Maps/" + chooseMap->currentText() + "/map.cfg");

  if (mapCfgFile.open(QFile::ReadOnly)) {

    QTextStream input(&mapCfgFile);

    input >> theme;

    mapCfgFile.close();

  }

}

void HWMapContainer::changeImage()

{

  pMap = new HWMap();

  connect(pMap, SIGNAL(ImageReceived(const QImage)), this, SLOT(setImage(const QImage)));

  pMap->getImage(m_seed.toStdString());

  theme = (Themes->size() > 0) ? Themes->at(rand() % Themes->size()) : "steel";

}

QString HWMapContainer::getCurrentSeed() const

{

  return m_seed;

}

QString HWMapContainer::getCurrentMap() const

{

  if(!chooseMap->currentIndex()) return QString();

  return chooseMap->currentText();

}

QString HWMapContainer::getCurrentTheme() const

{

	return theme;

}

void HWMapContainer::resizeEvent ( QResizeEvent * event )

{

  //imageButt->setIconSize(imageButt->size());

}

void HWMapContainer::setSeed(const QString & seed)

{

	m_seed = seed;

	changeImage();

}

void HWMapContainer::setMap(const QString & map)

{

	int id = chooseMap->findText(map);

	if(id >= 0) {

		chooseMap->setCurrentIndex(id);

		loadMap(id);

	}

}

void HWMapContainer::setTheme(const QString & theme)

{

	this->theme = theme;

}

void HWMapContainer::setRandomSeed()

{

  m_seed = QUuid::createUuid().toString();

  emit seedChanged(m_seed);

  changeImage();

  emit themeChanged(theme);

}