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mapContainer.cpp

/*
 * 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 <QLabel>
#include <QListWidget>
#include <QVBoxLayout>
#include <QIcon>

#include "hwconsts.h"
#include "mapContainer.h"
#include "igbox.h"

HWMapContainer::HWMapContainer(QWidget * parent) :
      QWidget(parent),
      mainLayout(this),
      pMap(0)
{
      hhSmall.load(":/res/hh_small.png");
      hhLimit = 18;
    templateFilter = 0;
      
      mainLayout.setContentsMargins(QApplication::style()->pixelMetric(QStyle::PM_LayoutLeftMargin),
            1,
            QApplication::style()->pixelMetric(QStyle::PM_LayoutRightMargin),
            QApplication::style()->pixelMetric(QStyle::PM_LayoutBottomMargin));
      
      imageButt = new QPushButton(this);
      imageButt->setObjectName("imageButt");
      imageButt->setFixedSize(256 + 6, 128 + 6);
      imageButt->setFlat(true);
      imageButt->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);//QSizePolicy::Minimum, QSizePolicy::Minimum);
      mainLayout.addWidget(imageButt, 0, 0, 1, 2);
      connect(imageButt, SIGNAL(clicked()), this, SLOT(setRandomSeed()));
      connect(imageButt, SIGNAL(clicked()), this, SLOT(setRandomTheme()));

      chooseMap = new QComboBox(this);
      chooseMap->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
      chooseMap->addItem(QComboBox::tr("generated map..."));
      for (int i = 0; i < mapList->size(); ++i) {
            QString map = (*mapList)[i];
            QFile mapCfgFile(
                        QString("%1/Maps/%2/map.cfg")
                        .arg(datadir->absolutePath())
                        .arg(map));

            if (mapCfgFile.open(QFile::ReadOnly)) {
                  QString theme;
                  quint32 limit = 0;
                  QList<QVariant> mapInfo;
                  QTextStream input(&mapCfgFile);
                  input >> theme;
                  input >> limit;
                  mapInfo.push_back(theme);
                  if (limit)
                        mapInfo.push_back(limit);
                  else
                        mapInfo.push_back(18);
                  chooseMap->addItem(map, mapInfo);
                  mapCfgFile.close();
            }
      }
      
      connect(chooseMap, SIGNAL(currentIndexChanged(int)), this, SLOT(mapChanged(int)));
      mainLayout.addWidget(chooseMap, 1, 1);

      QLabel * lblMap = new QLabel(tr("Map"), this);
      mainLayout.addWidget(lblMap, 1, 0);

      lblFilter = new QLabel(tr("Filter"), this);
      mainLayout.addWidget(lblFilter, 2, 0);

      CB_TemplateFilter = new QComboBox(this);
    CB_TemplateFilter->addItem(tr("All"), 0);
    CB_TemplateFilter->addItem(tr("Small"), 1);
    CB_TemplateFilter->addItem(tr("Medium"), 2);
    CB_TemplateFilter->addItem(tr("Large"), 3);
    CB_TemplateFilter->addItem(tr("Cavern"), 4);
    CB_TemplateFilter->addItem(tr("Wacky"), 5);
      mainLayout.addWidget(CB_TemplateFilter, 2, 1);

      connect(CB_TemplateFilter, SIGNAL(currentIndexChanged(int)), this, SLOT(templateFilterChanged(int)));

      gbThemes = new IconedGroupBox(this);
      gbThemes->setTitleTextPadding(60);
      gbThemes->setContentTopPadding(6);
      gbThemes->setTitle(tr("Themes"));

      //gbThemes->setStyleSheet("padding: 0px"); // doesn't work - stylesheet is set with icon
      mainLayout.addWidget(gbThemes, 0, 2, 3, 1);
      
      QVBoxLayout * gbTLayout = new QVBoxLayout(gbThemes);
      gbTLayout->setContentsMargins(0, 0, 0 ,0);
      gbTLayout->setSpacing(0);
      lwThemes = new QListWidget(this);
      lwThemes->setMinimumHeight(30);
      lwThemes->setFixedWidth(120);
      for (int i = 0; i < Themes->size(); ++i) {
            QListWidgetItem * lwi = new QListWidgetItem();
            lwi->setText(Themes->at(i));
            lwi->setTextAlignment(Qt::AlignHCenter);
            lwThemes->addItem(lwi);
      }
      connect(lwThemes, SIGNAL(currentRowChanged(int)), this, SLOT(themeSelected(int)));

    // override default style to tighten up theme scroller
      lwThemes->setStyleSheet(QString(
            "QListWidget{"
                  "border: solid;"
                  "border-width: 0px;"
                  "border-radius: 0px;"
                  "border-color: transparent;"
                  "background-color: #0d0544;"
                  "color: #ffcc00;"
                  "font: bold 14px;"
                  "}"
            )
      );
 
      gbTLayout->addWidget(lwThemes);
      lwThemes->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Minimum);
      
      mainLayout.setSizeConstraint(QLayout::SetFixedSize);//SetMinimumSize

      setRandomSeed();
      setRandomTheme();
}

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);

    addInfoToPreview(pxres);
      chooseMap->setCurrentIndex(0);
      pMap = 0;
}

void HWMapContainer::setHHLimit(int newHHLimit)
{
    hhLimit = newHHLimit;
}

void HWMapContainer::mapChanged(int index)
{
      if(!index) {
            changeImage();
            gbThemes->show();
        lblFilter->show();
        CB_TemplateFilter->show();
            emit mapChanged("+rnd+");
            emit themeChanged(chooseMap->itemData(0).toList()[0].toString());
      } else
      {
            loadMap(index);
            gbThemes->hide();
        lblFilter->hide();
        CB_TemplateFilter->hide();
            emit mapChanged(chooseMap->currentText());
      }
}

void HWMapContainer::loadMap(int index)
{
      QPixmap mapImage;
      if(!mapImage.load(datadir->absolutePath() + "/Maps/" + chooseMap->currentText() + "/preview.png")) {
            changeImage();
            chooseMap->setCurrentIndex(0);
            return;
      }

    hhLimit = chooseMap->itemData(index).toList()[1].toInt();
    addInfoToPreview(mapImage);
}

// Should this add text to identify map size?
void HWMapContainer::addInfoToPreview(QPixmap image)
{
      QPixmap finalImage = QPixmap(image.size());
      finalImage.fill(QColor(0, 0, 0, 0));
      
      QPainter p(&finalImage);
      p.drawPixmap(image.rect(), image);
      //p.setPen(QColor(0xf4,0x9e,0xe9));
      p.setPen(QColor(0xff,0xcc,0x00));
      p.setBrush(QColor(0, 0, 0));
      p.drawRect(image.rect().width() - hhSmall.rect().width() - 28, 3, 40, 20);
      p.setFont(QFont("MS Shell Dlg", 10));
      p.drawText(image.rect().width() - hhSmall.rect().width() - 14 - (hhLimit > 9 ? 10 : 0), 18, QString::number(hhLimit));
      p.drawPixmap(image.rect().width() - hhSmall.rect().width() - 5, 5, hhSmall.rect().width(), hhSmall.rect().height(), hhSmall);

      imageButt->setIcon(finalImage);
      imageButt->setIconSize(image.size());
}

void HWMapContainer::changeImage()
{
      if (pMap)
      {
            disconnect(pMap, 0, this, SLOT(setImage(const QImage)));
            disconnect(pMap, 0, this, SLOT(setHHLimit(int)));
            pMap = 0;
      }

      pMap = new HWMap();
      connect(pMap, SIGNAL(ImageReceived(const QImage)), this, SLOT(setImage(const QImage)));
      connect(pMap, SIGNAL(HHLimitReceived(int)), this, SLOT(setHHLimit(int)));
      pMap->getImage(m_seed.toStdString(), getTemplateFilter());
}

void HWMapContainer::themeSelected(int currentRow)
{
      QString theme = Themes->at(currentRow);
      QList<QVariant> mapInfo;
      mapInfo.push_back(theme);
      mapInfo.push_back(18);
      chooseMap->setItemData(0, mapInfo);
      gbThemes->setIcon(QIcon(QString("%1/Themes/%2/icon.png").arg(datadir->absolutePath()).arg(theme)));
      emit themeChanged(theme);
}

QString HWMapContainer::getCurrentSeed() const
{
      return m_seed;
}

QString HWMapContainer::getCurrentMap() const
{
      if(!chooseMap->currentIndex()) return QString();
      return chooseMap->currentText();
}

QString HWMapContainer::getCurrentTheme() const
{
      return chooseMap->itemData(chooseMap->currentIndex()).toList()[0].toString();
}

int HWMapContainer::getCurrentHHLimit() const
{
      return hhLimit;
}

quint32 HWMapContainer::getTemplateFilter() const
{
      return CB_TemplateFilter->itemData(CB_TemplateFilter->currentIndex()).toInt();
}

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)
{
      if(map == "+rnd+")
      {
            changeImage();
            return;
      }
      
      int id = chooseMap->findText(map);
      if(id > 0) {
            if (pMap)
            {
                  disconnect(pMap, 0, this, SLOT(setImage(const QImage)));
                  disconnect(pMap, 0, this, SLOT(setHHLimit(int)));
                  pMap = 0;
            }
            chooseMap->setCurrentIndex(id);
            loadMap(id);
      }
}

void HWMapContainer::setTheme(const QString & theme)
{
      QList<QListWidgetItem *> items = lwThemes->findItems(theme, Qt::MatchExactly);
      if(items.size())
            lwThemes->setCurrentItem(items.at(0));
}

void HWMapContainer::setRandomSeed()
{
      m_seed = QUuid::createUuid().toString();
      emit seedChanged(m_seed);
      changeImage();
}

void HWMapContainer::setRandomTheme()
{
      if(!Themes->size()) return;
      quint32 themeNum = rand() % Themes->size();
      lwThemes->setCurrentRow(themeNum);
}

void HWMapContainer::setTemplateFilter(int filter)
{
      CB_TemplateFilter->setCurrentIndex(filter);
}

void HWMapContainer::templateFilterChanged(int filter)
{
      emit newTemplateFilter(filter);
      changeImage();
}


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