git.maemo.org Git - jspeed/blob - src/themeloader.cpp

   1 /*
   2  * This file is part of jSpeed.
   3  *
   4  * jSpeed is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * jSpeed is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with jSpeed.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 #include <QtCore/QDir>
  20 #include <QtCore/QString>
  21 #include <QtCore/QDebug>
  22 #include <QtCore/QTimer>
  23 #include <QtGui/QStackedWidget>
  24 #include <QtXml/QDomNode>
  25 #include <QtXml/QDomDocument>
  26 #include <QtXml/QDomAttr>
  27 #include <QMaemo5InformationBox>
  28 #include "themeloader.h"
  29 #include "reader.h"
  30 #include "zipreader.h"
  31 #include "filereader.h"
  32 #include "themescreen.h"
  33 #include "detailscreen.h"
  34 #include "settings.h"
  35 #include "widgetscreen.h"
  36
  37 namespace
  38 {
  39     QString const RESOURCE_DIR = ":/resources/themes/";
  40     QString const THEME_SUFFIX = ".jspeed";
  41 }
  42
  43 ThemeLoader::ThemeLoader(WidgetScreen* mainScreen, WidgetScreen* detailScreen, QObject* parent): QObject(parent),
  44 reader_(0), mainScreen_(mainScreen), detailScreen_(detailScreen)
  45 {
  46 }
  47
  48 ThemeLoader::~ThemeLoader()
  49 {
  50 }
  51
  52 bool ThemeLoader::load()
  53 {
  54     QString theme = Settings::instance().value("theme", "default").toString();
  55
  56     QString themeDir = getThemeDir();
  57
  58     if(QFile::exists(themeDir + theme + THEME_SUFFIX))
  59     {
  60         reader_ = new ZipReader(themeDir + theme + THEME_SUFFIX);
  61
  62         if(read())
  63         {
  64             return true;
  65         }
  66         else
  67         {
  68             QMaemo5InformationBox::information(mainScreen_,
  69                                                tr("Unable to load theme: %1.").arg(error_),
  70                                                QMaemo5InformationBox::NoTimeout);
  71         }
  72     }
  73
  74     theme = "default";
  75     Settings::instance().setValue("theme", theme);
  76
  77     if(QFile::exists(RESOURCE_DIR + theme))
  78     {
  79         if(reader_)
  80         {
  81             delete reader_;
  82         }
  83
  84         reader_ = new FileReader(RESOURCE_DIR + theme);
  85         return read();
  86     }
  87
  88     error_ = "No themes found";
  89
  90     return false;
  91 }
  92
  93 bool ThemeLoader::read()
  94 {
  95     Q_ASSERT(reader_ != 0);
  96
  97     if(!reader_->open())
  98     {
  99         error_ = reader_->errorString();
 100         return false;
 101     }
 102
 103     QByteArray xmlData;
 104
 105     if(!reader_->readFile("theme.xml", xmlData))
 106     {
 107         error_ = "Unable to find <b>theme.xml</b> from theme file";
 108         return false;
 109     }
 110
 111     QDomDocument doc;
 112     int line = 0;
 113     int column = 0;
 114     QString msg;
 115
 116     if(!doc.setContent(xmlData, false, &msg, &line, &column))
 117     {
 118         error_ = "Invalid xml file, " + msg + " (line " + QString::number(line)+", column " + QString::number(column) + ")";
 119         return false;
 120     }
 121
 122     detailScreen_->clear();
 123     detailScreen_->addScreen(new DetailScreen, WidgetScreen::LANDSCAPE);
 124     detailScreen_->addScreen(new DetailScreen, WidgetScreen::PORTRAIT);
 125     loadScreen("detailscreen", doc, detailScreen_);
 126
 127     mainScreen_->clear();
 128     mainScreen_->addScreen(new ThemeScreen, WidgetScreen::LANDSCAPE);
 129     mainScreen_->addScreen(new ThemeScreen, WidgetScreen::PORTRAIT);
 130     bool ret = loadScreen("mainscreen", doc, mainScreen_);
 131     mainScreen_->removeUnloaded();
 132
 133     reader_->close();
 134
 135     return ret;
 136 }
 137
 138 bool ThemeLoader::loadScreen(QString const& tag, QDomDocument const& doc, WidgetScreen* screen)
 139 {
 140     QDomNodeList orientations = doc.elementsByTagName(tag);
 141
 142     if(orientations.isEmpty())
 143     {
 144         error_ = "No <"+tag+"> tags found";
 145         return false;
 146     }
 147
 148     bool ok = true;
 149
 150     for(int i = 0; i < orientations.size(); i++)
 151     {
 152         QDomNode data = orientations.at(i);
 153         QString type = data.attributes().namedItem("orientation").toAttr().value();
 154         QDomNode color = data.attributes().namedItem("color");
 155
 156         if(type == "landscape")
 157         {
 158             if(screen->orientationLoaded(WidgetScreen::LANDSCAPE))
 159             {
 160                 error_ = "More than one <"+tag+" orientation=\"landscape\"> specified";
 161                 ok = false;
 162             }
 163
 164             ok = ok && screen->load(WidgetScreen::LANDSCAPE, data, reader_);
 165
 166         }
 167         else if(type == "portrait")
 168         {
 169             if(screen->orientationLoaded(WidgetScreen::PORTRAIT))
 170             {
 171                 error_ = "More than one <"+tag+" orientation=\"portrait\"> specified";
 172                 ok = false;
 173             }
 174
 175             ok = ok && screen->load(WidgetScreen::PORTRAIT, data, reader_);
 176         }
 177         else if(type == "both")
 178         {
 179             if(screen->orientationLoaded(WidgetScreen::PORTRAIT) ||
 180                screen->orientationLoaded(WidgetScreen::LANDSCAPE))
 181             {
 182                 error_ = "Multiple orientations specified for same screen";
 183                 ok = false;
 184             }
 185
 186             ok = ok && screen->load(WidgetScreen::PORTRAIT, data, reader_);
 187             ok = ok && screen->load(WidgetScreen::LANDSCAPE, data, reader_);
 188         }
 189         else
 190         {
 191             error_ = "Invalid orientation: " + type;
 192             ok = false;
 193         }
 194
 195         if(ok && !color.isNull())
 196         {
 197             screen->setColor(color.toAttr().value());
 198         }
 199     }
 200
 201     return ok;
 202 }
 203
 204 QString ThemeLoader::getThemeDir()
 205 {
 206     return Settings::getDir() + "themes" + QDir::separator();
 207 }
 208
 209 QString const& ThemeLoader::getThemeSuffix()
 210 {
 211     return THEME_SUFFIX;
 212 }
 213
 214 QString const& ThemeLoader::error() const
 215 {
 216     return error_;
 217 }
 218