Work on skins.

CMakeLists.txt

@@ -137,10 +137,11 @@ if(${USE_QT_5})
   find_package(Qt5WebKitWidgets)
   find_package(Qt5Widgets)
   find_package(Qt5Xml)
+  find_package(Qt5XmlPatterns)
   find_package(Qt5Network)
   find_package(Qt5LinguistTools)
 else(${USE_QT_5})
-  find_package(Qt4 REQUIRED QtCore QtGui QtSql QtNetwork QtWebkit QtXml)
+  find_package(Qt4 REQUIRED QtCore QtGui QtSql QtNetwork QtWebkit QtXml QtXmlPatterns)
   include(${QT_USE_FILE})
 endif(${USE_QT_5})
 
@@ -157,9 +158,9 @@ if(MINGW AND WIN32)
     )
     set(APP_SOURCES ${APP_SOURCES} ${CMAKE_CURRENT_BINARY_DIR}/resources/executable_properties/rssguard_win.o)
 
-# MSVC takes care of this automatically no need to use windres.exe
+# MSVC takes care of this automatically - no need to use windres.exe
 # for MSVC compilers.
-elseif(WIN32)
+elseif(MINGW AND WIN32)
   set(APP_SOURCES ${APP_SOURCES} ${CMAKE_CURRENT_BINARY_DIR}/resources/executable_properties/rssguard_win.rc)
 endif(MINGW AND WIN32)
 
@@ -175,6 +176,7 @@ set(APP_SOURCES
   src/gui/formmain.cpp
   src/gui/systemtrayicon.cpp
   src/gui/iconthemefactory.cpp
+  src/gui/skinfactory.cpp
   src/gui/formsettings.cpp
   src/gui/formwelcome.cpp
   src/gui/formabout.cpp
@@ -218,6 +220,7 @@ set(APP_HEADERS
   src/gui/formmain.h
   src/gui/systemtrayicon.h
   src/gui/iconthemefactory.h
+  src/gui/skinfactory.h
   src/gui/formsettings.h
   src/gui/formwelcome.h
   src/gui/formabout.h
@@ -334,6 +337,7 @@ if(${USE_QT_5})
     Sql
     Network
     Xml
+    XmlPatterns
     WebKit
     WebKitWidgets
   )
@@ -354,6 +358,7 @@ else(${USE_QT_5})
     ${QT_QTNETWORK_LIBRARY}
     ${QT_QTSQL_LIBRARY}
     ${QT_QTXML_LIBRARY}
+    ${QT_QTXMLPATTERNS_LIBRARY}
     ${QT_QTMAIN_LIBRARY}
     ${QT_QTWEBKIT_LIBRARY}
   )

src/gui/formmain.cpp

@@ -122,7 +122,7 @@ void FormMain::cleanupResources() {
 }
 
 bool FormMain::event(QEvent *event) {
-  if (event->type() == ThemeFactoryEvent::type()) {
+  if (event->type() == IconThemeFactoryEvent::type()) {
     // Handle the change of icon theme.
     setupIcons();
     event->accept();

src/gui/iconthemefactory.cpp

@@ -11,20 +11,20 @@
 
 
 QPointer<IconThemeFactory> IconThemeFactory::s_instance;
-QEvent::Type ThemeFactoryEvent::m_typeOfEvent = QEvent::None;
+QEvent::Type IconThemeFactoryEvent::m_typeOfEvent = QEvent::None;
 
 //
 // ThemeFactoryEvent class
 //
 
-ThemeFactoryEvent::ThemeFactoryEvent() : QEvent(ThemeFactoryEvent::type()) {
+IconThemeFactoryEvent::IconThemeFactoryEvent() : QEvent(IconThemeFactoryEvent::type()) {
 }
 
-ThemeFactoryEvent::~ThemeFactoryEvent() {
+IconThemeFactoryEvent::~IconThemeFactoryEvent() {
   qDebug("Destroying IconThemeFactoryEvent.");
 }
 
-QEvent::Type ThemeFactoryEvent::type()  {
+QEvent::Type IconThemeFactoryEvent::type()  {
   if (m_typeOfEvent == QEvent::None) {
     m_typeOfEvent = static_cast<QEvent::Type>(QEvent::registerEventType(2000));
   }
@@ -109,7 +109,7 @@ void IconThemeFactory::loadCurrentIconTheme(bool notify_widgets) {
   if (notify_widgets) {
     foreach (QWidget *widget, QtSingleApplication::allWidgets()) {
       QtSingleApplication::postEvent((QObject*) widget,
-                                     new ThemeFactoryEvent());
+                                     new IconThemeFactoryEvent());
     }
   }
 }

src/gui/iconthemefactory.h

@@ -54,15 +54,15 @@ class IconThemeFactory : public QObject {
     static QPointer<IconThemeFactory> s_instance;
 };
 
-class ThemeFactoryEvent : public QEvent {
+class IconThemeFactoryEvent : public QEvent {
   public:
     enum Type {
       IconThemeChange = 2000
     };
 
     // Constructors.
-    explicit ThemeFactoryEvent();
-    virtual ~ThemeFactoryEvent();
+    explicit IconThemeFactoryEvent();
+    virtual ~IconThemeFactoryEvent();
 
     static QEvent::Type type();
 

src/gui/skinfactory.cpp

@@ -0,0 +1,149 @@
+#include <QApplication>
+#include <QDomDocument>
+#include <QDir>
+#include <QXmlQuery>
+#include <QStyleFactory>
+
+#include "core/defs.h"
+#include "core/settings.h"
+#include "gui/skinfactory.h"
+
+
+QPointer<SkinFactory> SkinFactory::s_instance;
+
+SkinFactory::SkinFactory(QObject *parent)
+  : QObject(parent), m_currentSkin(APP_THEME_SYSTEM) {
+}
+
+SkinFactory::~SkinFactory() {
+  qDebug("Destroying SkinFactory instance.");
+}
+
+SkinFactory *SkinFactory::getInstance() {
+  if (s_instance.isNull()) {
+    s_instance = new SkinFactory(qApp);
+  }
+
+  return s_instance;
+}
+
+void SkinFactory::loadCurrentSkin() {
+  QString skin_name_from_settings = Settings::getInstance()->value(APP_CFG_GUI,
+                                                                   "skin",
+                                                                   "base/plain.xml").toString();
+  bool loaded = false;
+  Skin skin_data = getSkinInfo(skin_name_from_settings, &loaded);
+
+  if (loaded) {
+    loadSkinFromData(skin_data.m_rawData, skin_name_from_settings);
+
+    foreach (QString style, skin_data.m_stylesName.split("\n")) {
+      if (qApp->setStyle(style) != 0) {
+        qDebug("Style '%s' loaded.", qPrintable(style));
+        break;
+      }
+    }
+
+    m_currentSkin = skin_name_from_settings;
+
+    qDebug("Skin '%s' loaded.", qPrintable(skin_name_from_settings));
+  }
+  else {
+    qDebug("Skin '%s' not loaded because style name is not specified or skin raw data is missing.",
+           qPrintable(skin_name_from_settings));
+  }
+}
+
+bool SkinFactory::loadSkinFromData(QString skin_data, const QString &skin_path) {
+  QStringList skin_parts = skin_path.split('/', QString::SkipEmptyParts);
+
+  // Skin does not contain leading folder name or the actual skin file name.
+  if (skin_parts.size() != 2) {
+    qDebug("Loading of sking %s failed because skin name does not contain "
+           "base folder name or the actual skin name.",
+           qPrintable(skin_path));
+    return false;
+  }
+  else {
+    qDebug("Loading skin '%s'.", qPrintable(skin_path));
+  }
+
+  // Create needed variables and create QFile object representing skin contents.
+  QString skin_folder = skin_parts.at(0);
+
+  // Here we use "/" instead of QDir::separator() because CSS2.1 url field
+  // accepts '/' as path elements separator.
+  //
+  // "##" is placeholder for the actual path to skin file. This is needed for using
+  // images within the QSS file.
+  QString parsed_data = skin_data.replace("##",
+                                          APP_SKIN_PATH + "/" + skin_folder + "/images");
+  qApp->setStyleSheet(parsed_data);
+  return true;
+}
+
+void SkinFactory::setCurrentSkinName(const QString &skin_name) {
+  Settings::getInstance()->setValue(APP_CFG_GUI, "skin", skin_name);
+  loadCurrentSkin();
+}
+
+QString SkinFactory::getCurrentSkinName() {
+  return m_currentSkin;
+}
+
+Skin SkinFactory::getSkinInfo(const QString &skin_name, bool *ok) {
+  Skin skin;
+  QXmlQuery query;
+  QFile skin_file(APP_SKIN_PATH + QDir::separator() + skin_name);
+
+  if (!skin_file.open(QIODevice::ReadOnly) ||!query.setFocus(&skin_file)) {
+    if (ok) {
+      *ok = false;
+    }
+    return skin;
+  }
+
+  // Obtain skin raw data.
+  query.setQuery("string(skin/data)");
+  query.evaluateTo(&skin.m_rawData);
+
+  // Obtain style name.
+  query.setQuery("string(/skin/style)");
+  query.evaluateTo(&skin.m_stylesName);
+  skin.m_stylesName = skin.m_stylesName.remove("\n");
+
+  // Obtain author.
+  query.setQuery("string(/skin/author/name)");
+  query.evaluateTo(&skin.m_author);
+  skin.m_author = skin.m_author.remove("\n");
+
+  // Obtain email.
+  query.setQuery("string(/skin/author/email)");
+  query.evaluateTo(&skin.m_email);
+  skin.m_email = skin.m_email.remove("\n");
+
+  // Obtain version.
+  query.setQuery("string(/skin/@version)");
+  query.evaluateTo(&skin.m_version);
+  skin.m_version = skin.m_version.remove("\n");
+
+  // Obtain other information.
+  skin.m_baseName = skin_name;
+
+  // Free resources.
+  skin_file.close();
+  skin_file.deleteLater();
+
+  if (ok) {
+    *ok = !skin.m_author.isEmpty() && !skin.m_version.isEmpty() &&
+          !skin.m_baseName.isEmpty() && !skin.m_email.isEmpty() &&
+          !skin.m_rawData.isEmpty() && !skin.m_stylesName.isEmpty();
+  }
+
+  return skin;
+}
+
+QList<Skin> SkinFactory::getInstalledSkins() {
+  QList<Skin> skins;
+  return skins;
+}

src/gui/skinfactory.h

@@ -0,0 +1,54 @@
+#ifndef SKINFACTORY_H
+#define SKINFACTORY_H
+
+#include <QObject>
+#include <QPointer>
+
+
+struct Skin {
+    QString m_baseName;
+    QString m_stylesName;
+    QString m_author;
+    QString m_email;
+    QString m_version;
+    QString m_rawData;
+};
+
+class SkinFactory : public QObject {
+    Q_OBJECT
+
+  private:
+    explicit SkinFactory(QObject *parent = 0);
+
+    bool loadSkinFromData(QString skin_data, const QString &skin_path);
+
+  public:
+    // Singleton getter.
+    static SkinFactory *getInstance();
+
+    // Destructor.
+    virtual ~SkinFactory();
+
+    // Loads skin name from settings and sets it as active.
+    void loadCurrentSkin();
+
+    // Return the name of the currently activated skin.
+    // NOTE: Skin name is formatted as "<folder>/<skin>.xml".
+    QString getCurrentSkinName();
+
+    Skin getSkinInfo(const QString &skin_name, bool *ok = NULL);
+
+    QList<Skin> getInstalledSkins();
+
+    // Sets the desired skin as the active one if it exists.
+    void setCurrentSkinName(const QString &skin_name);
+
+  private:
+    // Holds name of the current skin.
+    QString m_currentSkin;
+
+    // Singleton.
+    static QPointer<SkinFactory> s_instance;
+};
+
+#endif // SKINFACTORY_H

src/main.cpp

@@ -11,6 +11,7 @@
 #include "core/settings.h"
 #include "core/dynamicshortcuts.h"
 #include "gui/iconthemefactory.h"
+#include "gui/skinfactory.h"
 #include "gui/formmain.h"
 #include "gui/formwelcome.h"
 #include "gui/systemtrayicon.h"
@@ -66,9 +67,11 @@ int main(int argc, char *argv[]) {
   QtSingleApplication::addLibraryPath(APP_PLUGIN_PATH);
 #endif
 
-  // Add an extra path for non-system icon themes and set current icon theme.
+  // Add an extra path for non-system icon themes and set current icon theme
+  // and skin.
   IconThemeFactory::getInstance()->setupSearchPaths();
   IconThemeFactory::getInstance()->loadCurrentIconTheme(false);
+  SkinFactory::getInstance()->loadCurrentSkin();
 
   // Load localization and setup locale before any widget is constructed.
   LoadLocalization();