settings.h

c++的guiQt做的开发

#ifndef __SETTINGS_H__
#define __SETTINGS_H__

#include <QObject>
class QSettings;
class QSplitter;
class QStringList;
class QString;

namespace gui {

class StaticSettings;

/**
 Class managing settings, saving and loading single settings or window states
 \brief Saving and loading settings
 */
class Settings : public QObject {
 Q_OBJECT
public:
 ~Settings();
 static Settings* getInstance();
 static void installExitHandler();
 static void setAppKey(const QString &key);
 static void setPaths(const QString &dataPath, const QString &configDir, const QString &configFile);
 static QString dataPath();
 static QString configDir();
 static QString configFile();
 static QString appPath();
 static void addAlias(const QString &origName, const QString &newName);
 void saveWindow(QWidget *win,const QString &name);
 void restoreWindow(QWidget *win,const QString &name);
 void saveSplitter(QSplitter *spl,const QString &name);
 void restoreSplitter(QSplitter *spl,const QString &name);
 QStringList readPath(const QString &name,const QString &prefix="path/");
 QStringList readList(const QString &name,const QString &separator=",");
public slots:
 void flush();
 QString readExpand(const QString &key,const QString &defValue=QString::null);
 QString read(const QString &key,const QString &defValue=QString::null);
 bool readBool(const QString &key,bool defValue=false);
 int readNum(const QString &key,int defValue=0);
 void write(const QString &key,const QString &value);
 void write(const QString &key, int value);
 void remove(const QString &key);
 void removeAll(const QString &key);
 static QString expand(QString s);
 static QString expandSingle(const QString &var);
 QString getFullPathName(const QString &nameOfPath,QString fileName=QString::null,const QString &prefix=QString::null);
signals:
 /** Signal emitted when any setting is changed. Key of changed settings is sent.
     Can be used to monitor settings changes */
 void settingChanged(QString);
private:
 //Constructor is private, use getInstance
 Settings();
 void init();
 void initSettings();
private:
 /** Settings object used to load configuration
  These settings takle precedence before staticSettings */
 QSettings *set;
 /** Settings object used to load static configuration (menu, etc ...)
  These settings are never changed (and never written) */
 StaticSettings *staticSet;
};


/**
 One object for application, holding all global settings.
 It will be initialized on first call to \see Settings::getInstance
 */
extern Settings *globalSettings;

} // namespace gui

#endif