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#include "qguiplatformplugin_p.h"

#include <qdebug.h>

#include <qfile.h>

#include <qdir.h>

#include <qsettings.h>

#include "private/qfactoryloader_p.h"

#include "qstylefactory.h"

#include "qapplication.h"

#include "qplatformdefs.h"

#include "qicon.h"

#ifdef Q_WS_WINCE

#include "qguifunctions_wince.h"

extern bool qt_wince_is_smartphone(); //qguifunctions_wince.cpp

extern bool qt_wince_is_mobile();     //qguifunctions_wince.cpp

extern bool qt_wince_is_pocket_pc();  //qguifunctions_wince.cpp

#endif

#if defined(Q_WS_X11)

#include <private/qkde_p.h>

#include <private/qgtkstyle_p.h>

#include <private/qt_x11_p.h>

#endif

QT_BEGIN_NAMESPACE

/*! \internal

    Return (an construct if necesseray) the Gui Platform plugin.

    The plugin key to be loaded is inside the QT_PLATFORM_PLUGIN environment variable.

    If it is not set, it will be the DESKTOP_SESSION on X11.

    If no plugin can be loaded, the default one is returned.

 */

QGuiPlatformPlugin *qt_guiPlatformPlugin()

{

    static QGuiPlatformPlugin *plugin;

    if (!plugin)

    {

#if !defined(QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)

        QString key = QString::fromLocal8Bit(qgetenv("QT_PLATFORM_PLUGIN"));

#ifdef Q_WS_X11

        if (key.isEmpty()) {

            switch(X11->desktopEnvironment) {

            case DE_KDE:

                key = QString::fromLatin1("kde");

                break;

            default:

                key = QString::fromLocal8Bit(qgetenv("DESKTOP_SESSION"));

                break;

            }

        }

#endif

        if (!key.isEmpty() && QApplication::desktopSettingsAware()) {

            QFactoryLoader loader(QGuiPlatformPluginInterface_iid, QLatin1String("/gui_platform"));

            plugin = qobject_cast<QGuiPlatformPlugin *>(loader.instance(key));

        }

#endif // QT_NO_LIBRARY

        if(!plugin) {

            static QGuiPlatformPlugin def;

            plugin = &def;

        }

    }

    return plugin;

}

/* \class QPlatformPlugin

    QGuiPlatformPlugin can be used to integrate Qt applications in a platform built on top of Qt.

    The application developer should not know or use the plugin, it is only used by Qt internaly.

    But full platform that are built on top of Qt may provide a plugin so 3rd party Qt application

    running in the platform are integrated.

 */

/*

    The constructor can be used to install hooks in Qt

 */

QGuiPlatformPlugin::QGuiPlatformPlugin(QObject *parent) : QObject(parent) {}

QGuiPlatformPlugin::~QGuiPlatformPlugin() {}

/* return the string key to be used by default the application */

QString QGuiPlatformPlugin::styleName()

{

#if defined(Q_WS_WIN) && defined(Q_WS_WINCE)

    if (qt_wince_is_smartphone() || qt_wince_is_pocket_pc())

        return QLatin1String("WindowsMobile");

    else

        return QLatin1String("WindowsCE");

#elif defined(Q_WS_WIN)

    if ((QSysInfo::WindowsVersion >= QSysInfo::WV_VISTA

        && QSysInfo::WindowsVersion < QSysInfo::WV_NT_based))

        return QLatin1String("WindowsVista");

    else if ((QSysInfo::WindowsVersion >= QSysInfo::WV_XP

        && QSysInfo::WindowsVersion < QSysInfo::WV_NT_based))

        return QLatin1String("WindowsXP");

    else

        return QLatin1String("Windows");                // default styles for Windows

#elif defined(Q_WS_X11) && defined(Q_OS_SOLARIS)

    return QLatin1String("CDE");                        // default style for X11 on Solaris

#elif defined(Q_WS_S60)

    return QLatin1String("S60");                        // default style for Symbian with S60

#elif defined(Q_OS_SYMBIAN)

    return QLatin1String("Windows");                    // default style for Symbian without S60

#elif defined(Q_WS_X11) && defined(Q_OS_IRIX)

    return QLatin1String("SGI");                        // default style for X11 on IRIX

#elif defined(Q_WS_QWS)

    return QLatin1String("Plastique");                  // default style for X11 and small devices

#elif defined(Q_WS_MAC)

    return QLatin1String("Macintosh");              // default style for all Mac's

#elif defined(Q_WS_X11)

    QString stylename;

    switch(X11->desktopEnvironment) {

    case DE_KDE:

        stylename = QKde::kdeStyle();

        break;

    case DE_GNOME: {

        QStringList availableStyles = QStyleFactory::keys();

        // Set QGtkStyle for GNOME if available

        QString gtkStyleKey = QString::fromLatin1("GTK+");

        if (availableStyles.contains(gtkStyleKey)) {

            stylename = gtkStyleKey;

            break;

        }

        if (X11->use_xrender)

            stylename = QLatin1String("cleanlooks");

        else

            stylename = QLatin1String("windows");

        break;

    }

    case DE_CDE:

        stylename = QLatin1String("cde");

        break;

    default:

        // Don't do anything

        break;

    }

    return stylename;

#endif

}

/* return an aditional default palette  (only work on X11) */

QPalette QGuiPlatformPlugin::palette()

{

#ifdef Q_WS_X11

    if (QApplication::desktopSettingsAware() && X11->desktopEnvironment == DE_KDE)

        return QKde::kdePalette();

#endif

    return QPalette();

}

/* the default icon theme name for QIcon::fromTheme. */

QString QGuiPlatformPlugin::systemIconThemeName()

{

    QString result;

#ifdef Q_WS_X11

    if (X11->desktopEnvironment == DE_GNOME) {

        result = QString::fromLatin1("gnome");

#ifndef QT_NO_STYLE_GTK

        result = QGtkStylePrivate::getGConfString(QLatin1String("/desktop/gnome/interface/icon_theme"), result);

#endif

    } else if (X11->desktopEnvironment == DE_KDE) {

        result =  X11->desktopVersion >= 4 ? QString::fromLatin1("oxygen") : QString::fromLatin1("crystalsvg");

        QSettings settings(QKde::kdeHome() + QLatin1String("/share/config/kdeglobals"), QSettings::IniFormat);

        settings.beginGroup(QLatin1String("Icons"));

        result = settings.value(QLatin1String("Theme"), result).toString();

    }

#endif

    return result;

}

QStringList QGuiPlatformPlugin::iconThemeSearchPaths()

{

    QStringList paths;

#if defined(Q_WS_X11)

    QString xdgDirString = QFile::decodeName(getenv("XDG_DATA_DIRS"));

    if (xdgDirString.isEmpty())

        xdgDirString = QLatin1String("/usr/local/share/:/usr/share/");

    QStringList xdgDirs = xdgDirString.split(QLatin1Char(':'));

    for (int i = 0 ; i < xdgDirs.size() ; ++i) {

        QDir dir(xdgDirs[i]);

        if (dir.exists())

            paths.append(dir.path() + QLatin1String("/icons"));

    }

    if (X11->desktopEnvironment == DE_KDE) {

        paths << QLatin1Char(':') + QKde::kdeHome() + QLatin1String("/share/icons");

        QStringList kdeDirs = QFile::decodeName(getenv("KDEDIRS")).split(QLatin1Char(':'));

        for (int i = 0 ; i< kdeDirs.count() ; ++i) {

            QDir dir(QLatin1Char(':') + kdeDirs.at(i) + QLatin1String("/share/icons"));

            if (dir.exists())

                paths.append(dir.path());

        }

    }

    // Add home directory first in search path

    QDir homeDir(QDir::homePath() + QLatin1String("/.icons"));

    if (homeDir.exists())

        paths.prepend(homeDir.path());

#endif

#if defined(Q_WS_WIN)

    paths.append(qApp->applicationDirPath() + QLatin1String("/icons"));

#elif defined(Q_WS_MAC)

    paths.append(qApp->applicationDirPath() + QLatin1String("/../Resources/icons"));

#endif

    return paths;

}

/* backend for QFileIconProvider,  null icon means default */

QIcon QGuiPlatformPlugin::fileSystemIcon(const QFileInfo &)

{

    return QIcon();

}

/* Like QStyle::styleHint */

int QGuiPlatformPlugin::platformHint(PlatformHint hint)

{

    int ret = 0;

    switch(hint)

    {

        case PH_ToolButtonStyle:

            ret = Qt::ToolButtonIconOnly;

#ifdef Q_WS_X11

            if (X11->desktopEnvironment == DE_KDE && X11->desktopVersion >= 4

                && QApplication::desktopSettingsAware()) {

                ret = QKde::kdeToolButtonStyle();

            }

#endif

            break;

        case PH_ToolBarIconSize:

#ifdef Q_WS_X11

            if (X11->desktopEnvironment == DE_KDE && X11->desktopVersion >= 4

                && QApplication::desktopSettingsAware()) {

                ret = QKde::kdeToolBarIconSize();

            }

#endif

            //by default keep ret = 0 so QCommonStyle will use the style default

            break;

        default:

            break;

    }

    return ret;

}

QT_END_NAMESPACE