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 #include "themescheduler.h"
  37
  38 namespace
  39 {
  40     QString const RESOURCE_DIR = ":/resources/themes/";
  41     QString const THEME_SUFFIX = ".jspeed";
  42 }
  43
  44 ThemeLoader::ThemeLoader(WidgetScreen* mainScreen, WidgetScreen* detailScreen, QObject* parent): QObject(parent),
  45 reader_(0), mainScreen_(mainScreen), detailScreen_(detailScreen)
  46 {
  47 }
  48
  49 ThemeLoader::~ThemeLoader()
  50 {
  51 }
  52
  53 bool ThemeLoader::load()
  54 {
  55     if(theme_.isEmpty())
  56     {
  57         connect(&(ThemeScheduler::instance()), SIGNAL(themeChanged()), this, SLOT(load()));
  58     }
  59
  60     QString theme = ThemeScheduler::instance().currentTheme();
  61
  62     if(theme == theme_)
  63     {
  64         return true;
  65     }
  66
  67     theme_ = theme;
  68
  69     QString themeDir = getThemeDir();
  70
  71     if(QFile::exists(themeDir + theme_ + THEME_SUFFIX))
  72     {
  73         reader_ = new ZipReader(themeDir + theme_ + THEME_SUFFIX);
  74
  75         if(read())
  76         {
  77             return true;
  78         }
  79         else
  80         {
  81             QMaemo5InformationBox::information(mainScreen_,
  82                                                tr("Unable to load theme: %1.").arg(error_),
  83                                                QMaemo5InformationBox::NoTimeout);
  84         }
  85     }
  86
  87     theme_ = ThemeScheduler::instance().getDefaultTheme();
  88     Settings::instance().setValue("theme", theme_);
  89
  90     if(QFile::exists(RESOURCE_DIR + theme_))
  91     {
  92         if(reader_)
  93         {
  94             delete reader_;
  95         }
  96
  97         reader_ = new FileReader(RESOURCE_DIR + theme_);
  98         return read();
  99     }
 100
 101     error_ = "No themes found";
 102
 103     return false;
 104 }
 105
 106 bool ThemeLoader::read()
 107 {
 108     Q_ASSERT(reader_ != 0);
 109
 110     if(!reader_->open())
 111     {
 112         error_ = reader_->errorString();
 113         return false;
 114     }
 115
 116     QByteArray xmlData;
 117
 118     if(!reader_->readFile("theme.xml", xmlData))
 119     {
 120         error_ = "Unable to find <b>theme.xml</b> from theme file";
 121         return false;
 122     }
 123
 124     QDomDocument doc;
 125     int line = 0;
 126     int column = 0;
 127     QString msg;
 128
 129     if(!doc.setContent(xmlData, false, &msg, &line, &column))
 130     {
 131         error_ = "Invalid xml file, " + msg + " (line " + QString::number(line)+", column " + QString::number(column) + ")";
 132         return false;
 133     }
 134
 135     detailScreen_->clear();
 136     detailScreen_->addScreen(new DetailScreen, WidgetScreen::LANDSCAPE);
 137     detailScreen_->addScreen(new DetailScreen, WidgetScreen::PORTRAIT);
 138     loadScreen("detailscreen", doc, detailScreen_);
 139
 140     mainScreen_->clear();
 141     mainScreen_->addScreen(new ThemeScreen, WidgetScreen::LANDSCAPE);
 142     mainScreen_->addScreen(new ThemeScreen, WidgetScreen::PORTRAIT);
 143     bool ret = loadScreen("mainscreen", doc, mainScreen_);
 144     mainScreen_->removeUnloaded();
 145
 146     detailScreen_->reArrange();
 147     mainScreen_->reArrange();
 148
 149     reader_->close();
 150
 151     return ret;
 152 }
 153
 154 bool ThemeLoader::loadScreen(QString const& tag, QDomDocument const& doc, WidgetScreen* screen)
 155 {
 156     QDomNodeList orientations = doc.elementsByTagName(tag);
 157
 158     if(orientations.isEmpty())
 159     {
 160         error_ = "No <"+tag+"> tags found";
 161         return false;
 162     }
 163
 164     bool ok = true;
 165
 166     for(int i = 0; i < orientations.size(); i++)
 167     {
 168         QDomNode data = orientations.at(i);
 169         QString type = data.attributes().namedItem("orientation").toAttr().value();
 170         QDomNode color = data.attributes().namedItem("color");
 171
 172         if(type == "landscape")
 173         {
 174             if(screen->orientationLoaded(WidgetScreen::LANDSCAPE))
 175             {
 176                 error_ = "More than one <"+tag+" orientation=\"landscape\"> specified";
 177                 ok = false;
 178             }
 179
 180             ok = ok && screen->load(WidgetScreen::LANDSCAPE, data, reader_);
 181
 182             if(ok && !color.isNull())
 183             {
 184                 screen->setColor(WidgetScreen::LANDSCAPE, color.toAttr().value());
 185             }
 186
 187         }
 188         else if(type == "portrait")
 189         {
 190             if(screen->orientationLoaded(WidgetScreen::PORTRAIT))
 191             {
 192                 error_ = "More than one <"+tag+" orientation=\"portrait\"> specified";
 193                 ok = false;
 194             }
 195
 196             ok = ok && screen->load(WidgetScreen::PORTRAIT, data, reader_);
 197
 198             if(ok && !color.isNull())
 199             {
 200                 screen->setColor(WidgetScreen::PORTRAIT, color.toAttr().value());
 201             }
 202         }
 203         else if(type == "both")
 204         {
 205             if(screen->orientationLoaded(WidgetScreen::PORTRAIT) ||
 206                screen->orientationLoaded(WidgetScreen::LANDSCAPE))
 207             {
 208                 error_ = "Multiple orientations specified for same screen";
 209                 ok = false;
 210             }
 211
 212             ok = ok && screen->load(data, reader_);
 213
 214             if(ok && !color.isNull())
 215             {
 216                 screen->setColor(color.toAttr().value());
 217             }
 218         }
 219         else
 220         {
 221             error_ = "Invalid orientation: " + type;
 222             ok = false;
 223         }
 224     }
 225
 226     return ok;
 227 }
 228
 229 QString ThemeLoader::getThemeDir()
 230 {
 231     return Settings::getDir() + "themes" + QDir::separator();
 232 }
 233
 234 QString const& ThemeLoader::getThemeSuffix()
 235 {
 236     return THEME_SUFFIX;
 237 }
 238
 239 QString const& ThemeLoader::error() const
 240 {
 241     return error_;
 242 }
 243