QTfrontend/model/ThemeModel.cpp
author Wuzzy <Wuzzy2@mail.ru>
Wed, 18 Apr 2018 17:12:15 +0200
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/*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2015 Andrey Korotaev <unC0Rr@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; version 2 of the License
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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/**
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 * @file
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 * @brief ThemeModel class implementation
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 */
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#include "physfs.h"
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#include "ThemeModel.h"
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#include "hwconsts.h"
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ThemeModel::ThemeModel(QObject *parent) :
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    QAbstractListModel(parent)
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{
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    m_data = QList<QMap<int, QVariant> >();
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    m_themesLoaded = false;
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    m_filteredNoDLC = NULL;
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    m_filteredNoHidden = NULL;
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    m_filteredNoDLCOrHidden = NULL;
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}
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// Filters out DLC themes, e.g. themes which do not come by default
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ThemeFilterProxyModel * ThemeModel::withoutDLC()
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{
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    if (m_filteredNoDLC == NULL)
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    {
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        m_filteredNoDLC = new ThemeFilterProxyModel(this);
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        m_filteredNoDLC->setSourceModel(this);
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        m_filteredNoDLC->setFilterDLC(true);
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    }
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    return m_filteredNoDLC;
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}
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// Filters out hidden themes, these are themes which are not supposed to be
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// seen by the user.
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ThemeFilterProxyModel * ThemeModel::withoutHidden()
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{
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    if (m_filteredNoHidden == NULL)
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    {
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        m_filteredNoHidden = new ThemeFilterProxyModel(this);
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        m_filteredNoHidden->setSourceModel(this);
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        m_filteredNoHidden->setFilterHidden(true);
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    }
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    return m_filteredNoHidden;
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}
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// Combination of the two above for convenience
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ThemeFilterProxyModel * ThemeModel::withoutDLCOrHidden()
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{
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    if (m_filteredNoDLCOrHidden == NULL)
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    {
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        m_filteredNoDLCOrHidden = new ThemeFilterProxyModel(this);
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        m_filteredNoDLCOrHidden->setSourceModel(this);
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        m_filteredNoDLCOrHidden->setFilterDLC(true);
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        m_filteredNoDLCOrHidden->setFilterHidden(true);
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    }
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    return m_filteredNoDLCOrHidden;
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}
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int ThemeModel::rowCount(const QModelIndex &parent) const
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{
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    if(parent.isValid())
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        return 0;
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    else
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    {
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        if(!m_themesLoaded)
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            loadThemes();
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        return m_data.size();
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    }
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}
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QVariant ThemeModel::data(const QModelIndex &index, int role) const
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{
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    if(index.column() > 0 || index.row() >= m_data.size())
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        return QVariant();
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    else
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    {
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        if(!m_themesLoaded)
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            loadThemes();
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        return m_data.at(index.row()).value(role);
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    }
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}
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void ThemeModel::loadThemes() const
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{
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    qDebug("[LAZINESS] ThemeModel::loadThemes()");
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    m_themesLoaded = true;
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    DataManager & datamgr = DataManager::instance();
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    QStringList themes =
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        datamgr.entryList("Themes", QDir::AllDirs | QDir::NoDotAndDotDot);
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    m_data.clear();
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#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
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    m_data.reserve(themes.size());
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#endif
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    foreach (QString theme, themes)
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    {
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        QMap<int, QVariant> dataset;
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        // themes without icon are supposed to be hidden
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        QString iconpath = QString("physfs://Themes/%1/icon.png").arg(theme);
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        if (!QFile::exists(iconpath))
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        {
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            dataset.insert(IsHiddenRole, true);
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        }
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        else
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        {
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            // themes with the key “hidden” in theme.cfg are hidden, too
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            QFile themeCfgFile(QString("physfs://Themes/%1/theme.cfg").arg(theme));
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            if (themeCfgFile.open(QFile::ReadOnly))
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            {
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                QTextStream stream(&themeCfgFile);
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                QString line = stream.readLine();
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                QString key;
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                while (!line.isNull())
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                {
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                    key = QString(line);
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                    int equalsPos = line.indexOf('=');
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                    key.truncate(equalsPos - 1);
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                    key = key.simplified();
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                    if (!line.startsWith(';') && key == "hidden")
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                    {
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                        dataset.insert(IsHiddenRole, true);
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                        break;
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                    }
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                    line = stream.readLine();
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                }
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            }
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        }
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        // detect if theme is dlc
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        QString themeDir = PHYSFS_getRealDir(QString("Themes/%1").arg(theme).toLocal8Bit().data());
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        bool isDLC = !themeDir.startsWith(datadir->absolutePath());
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        dataset.insert(IsDlcRole, isDLC);
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        // set icon path
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        dataset.insert(IconPathRole, iconpath);
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        // set name
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        dataset.insert(ActualNameRole, theme);
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        // set displayed name
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        dataset.insert(Qt::DisplayRole, (isDLC ? "*" : "") + theme);
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        // load and set preview icon
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        iconpath = QString("physfs://Themes/%1/icon@2x.png").arg(theme);
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        if (QFile::exists(iconpath))
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        {
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            QIcon preview(QString("physfs://Themes/%1/icon@2x.png").arg(theme));
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            dataset.insert(Qt::DecorationRole, preview);
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        }
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        m_data.append(dataset);
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    }
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}