8 files changed, 399 insertions, 83 deletions

diff --git a/src/gui/kernel/kernel.pri b/src/gui/kernel/kernel.pri
index 7cde384..760d73c 100644
--- a/src/gui/kernel/kernel.pri
+++ b/src/gui/kernel/kernel.pri
@@ -47,7 +47,8 @@ HEADERS += \
 	kernel/qgesture_p.h \
 	kernel/qstandardgestures.h \
         kernel/qstandardgestures_p.h \
-        kernel/qsoftkeymanager_p.h
+        kernel/qsoftkeymanager_p.h \
+        kernel/qguiplatformplugin_p.h
 
 SOURCES += \
 	kernel/qaction.cpp \
@@ -79,7 +80,8 @@ SOURCES += \
 	kernel/qkeymapper.cpp \
 	kernel/qgesture.cpp \
         kernel/qstandardgestures.cpp \
-        kernel/qsoftkeymanager.cpp
+        kernel/qsoftkeymanager.cpp \
+        kernel/qguiplatformplugin.cpp
 
 win32 {
 	DEFINES += QT_NO_DIRECTDRAW
diff --git a/src/gui/kernel/qapplication.cpp b/src/gui/kernel/qapplication.cpp
index 044fedd..43addb6 100644
--- a/src/gui/kernel/qapplication.cpp
+++ b/src/gui/kernel/qapplication.cpp
@@ -84,6 +84,8 @@
 #include "qinputcontextfactory.h"
 #endif
 
+#include "qguiplatformplugin_p.h"
+
 #include <qthread.h>
 #include <private/qthread_p.h>
 
@@ -788,6 +790,9 @@ void QApplicationPrivate::construct(
             qCritical("Library qttestability load failed!");
         }
     }
+
+    //make sure the plugin is loaded
+    qt_guiPlatformPlugin();
 #endif
 }
 
@@ -1955,38 +1960,7 @@ void QApplicationPrivate::setSystemFont(const QFont &font)
 */
 QString QApplicationPrivate::desktopStyleKey()
 {
-QString desktopstyle;
-#if defined(Q_WS_WIN) && defined(Q_WS_WINCE)
-    if (qt_wince_is_smartphone() || qt_wince_is_pocket_pc())
-        desktopstyle = QLatin1String("WindowsMobile");
-     else
-        desktopstyle = QLatin1String("WindowsCE");
-
-#elif defined(Q_WS_WIN)
-            if ((QSysInfo::WindowsVersion >= QSysInfo::WV_VISTA
-                && QSysInfo::WindowsVersion < QSysInfo::WV_NT_based))
-                desktopstyle = QLatin1String("WindowsVista");
-                else if ((QSysInfo::WindowsVersion >= QSysInfo::WV_XP
-                && QSysInfo::WindowsVersion < QSysInfo::WV_NT_based))
-                desktopstyle = QLatin1String("WindowsXP");
-            else
-                desktopstyle = QLatin1String("Windows");                // default styles for Windows
-#elif defined(Q_WS_X11) && defined(Q_OS_SOLARIS)
-            desktopstyle = QLatin1String("CDE");                        // default style for X11 on Solaris
-#elif defined(Q_WS_S60)
-            desktopstyle = QLatin1String("S60");                        // default style for Symbian with S60
-#elif defined(Q_OS_SYMBIAN)
-            desktopstyle = QLatin1String("Windows");                    // default style for Symbian without S60
-#elif defined(Q_WS_X11) && defined(Q_OS_IRIX)
-            desktopstyle = QLatin1String("SGI");                        // default style for X11 on IRIX
-#elif defined(Q_WS_QWS)
-            desktopstyle = QLatin1String("Plastique");                  // default style for X11 and small devices
-#elif defined(Q_WS_X11)
-            desktopstyle = QApplicationPrivate::x11_desktop_style();     // default runtime dependant style for X11
-#elif defined(Q_WS_MAC)
-                desktopstyle = QLatin1String("Macintosh");              // default style for all Mac's
-#endif
-    return desktopstyle;
+    return qt_guiPlatformPlugin()->styleName();
 }
 
 /*!
diff --git a/src/gui/kernel/qapplication_p.h b/src/gui/kernel/qapplication_p.h
index 6036196..95b6d28 100644
--- a/src/gui/kernel/qapplication_p.h
+++ b/src/gui/kernel/qapplication_p.h
@@ -305,7 +305,6 @@ public:
 
 #if defined(Q_WS_X11)
 #ifndef QT_NO_SETTINGS
-    static QString x11_desktop_style();
     static bool x11_apply_settings();
 #endif
     static void reset_instance_pointer();
diff --git a/src/gui/kernel/qapplication_x11.cpp b/src/gui/kernel/qapplication_x11.cpp
index e46a370..bf95684 100644
--- a/src/gui/kernel/qapplication_x11.cpp
+++ b/src/gui/kernel/qapplication_x11.cpp
@@ -85,6 +85,7 @@
 #include "qtimer.h"
 #include "qlibrary.h"
 #include <private/qgraphicssystemfactory_p.h>
+#include "qguiplatformplugin_p.h"
 #include "qkde_p.h"
 
 #if !defined (QT_NO_TABLET)
@@ -919,7 +920,7 @@ bool QApplicationPrivate::x11_apply_settings()
     QString stylename = settings.value(QLatin1String("style")).toString();
 
     if (stylename.isEmpty() && QApplicationPrivate::styleOverride.isNull() && X11->use_xrender) {
-        stylename = x11_desktop_style();
+        stylename = qt_guiPlatformPlugin()->styleName();
     }
 
     static QString currentStyleName = stylename;
@@ -1313,8 +1314,7 @@ static void qt_set_x11_resources(const char* font = 0, const char* fg = 0,
             pal.setColor(QPalette::Disabled, QPalette::Highlight, Qt::darkBlue);
         }
 
-        if (kdeColors)
-            pal = QKde::kdePalette().resolve(pal);
+        pal = qt_guiPlatformPlugin()->palette().resolve(pal);
         QApplicationPrivate::setSystemPalette(pal);
         QColor::setAllowX11ColorNames(allowX11ColorNames);
     }
@@ -2560,42 +2560,6 @@ void qt_init(QApplicationPrivate *priv, int,
 #endif
 }
 
-
-    // run-time search for default style
-/*!
-    \internal
-*/
-QString QApplicationPrivate::x11_desktop_style()
-{
-    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;
-}
-
 void QApplicationPrivate::initializeWidgetPaletteHash()
 {
 }
diff --git a/src/gui/kernel/qguiplatformplugin.cpp b/src/gui/kernel/qguiplatformplugin.cpp
new file mode 100644
index 0000000..cf15aa2
--- /dev/null
+++ b/src/gui/kernel/qguiplatformplugin.cpp
@@ -0,0 +1,231 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qguiplatformplugin_p.h"
+#include <qdebug.h>
+#include "private/qfactoryloader_p.h"
+#include "qstylefactory.h"
+#include "qapplication.h"
+#include "qplatformdefs.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 "qkde_p.h"
+#include "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();
+}
+
+/* backend for QIcon::fromTheme. A null icon means it uses the default backend */
+QIcon QGuiPlatformPlugin::loadIcon(const QString &name)
+{
+    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;
+    }
+    return ret;
+}
+
+
+QT_END_NAMESPACE
diff --git a/src/gui/kernel/qguiplatformplugin_p.h b/src/gui/kernel/qguiplatformplugin_p.h
new file mode 100644
index 0000000..57ea8af
--- /dev/null
+++ b/src/gui/kernel/qguiplatformplugin_p.h
@@ -0,0 +1,122 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGUIPLATFORM_P_H
+#define QGUIPLATFORM_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qplugin.h>
+#include <QtCore/qfactoryinterface.h>
+#include <QtGui/qdialog.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+class QStyle;
+class QPalette;
+class QIcon;
+class QFileDialog;
+class QColorDialog;
+
+struct Q_GUI_EXPORT QGuiPlatformPluginInterface  : public QFactoryInterface
+{
+};
+
+#define QGuiPlatformPluginInterface_iid "com.nokia.qt.QGuiPlatformPluginInterface"
+
+Q_DECLARE_INTERFACE(QGuiPlatformPluginInterface, QGuiPlatformPluginInterface_iid)
+
+class Q_GUI_EXPORT QGuiPlatformPlugin : public QObject, public QGuiPlatformPluginInterface
+{
+    Q_OBJECT
+    Q_INTERFACES(QGuiPlatformPluginInterface:QFactoryInterface)
+    public:
+        explicit QGuiPlatformPlugin(QObject *parent = 0);
+        ~QGuiPlatformPlugin();
+
+        virtual QStringList keys() const {  return QStringList() << QLatin1String("default");  };
+
+        virtual QString styleName();
+        virtual QPalette palette();
+        virtual QIcon loadIcon(const QString &name);
+        enum PlatformHint { PH_ToolButtonStyle, PH_ToolBarIconSize };
+        virtual int platformHint(PlatformHint hint);
+
+
+        virtual void fileDialogDelete(QFileDialog *) {}
+        virtual bool fileDialogSetVisible(QFileDialog *, bool) { return false; }
+        virtual QDialog::DialogCode fileDialogResultCode(QFileDialog *) { return QDialog::Rejected; }
+        virtual void fileDialogSetDirectory(QFileDialog *, const QString &) {}
+        virtual QString fileDialogDirectory(const QFileDialog *) const { return QString(); }
+        virtual void fileDialogSelectFile(QFileDialog *, const QString &) {}
+        virtual QStringList fileDialogSelectedFiles(const QFileDialog *) const { return QStringList(); }
+        virtual void fileDialogSetFilter(QFileDialog *) {}
+        virtual void fileDialogSetNameFilters(QFileDialog *, const QStringList &) {}
+        virtual void fileDialogSelectNameFilter(QFileDialog *, const QString &) {}
+        virtual QString fileDialogSelectedNameFilter(const QFileDialog *) const { return QString(); }
+
+        virtual void colorDialogDelete(QColorDialog *) {}
+        virtual bool colorDialogSetVisible(QColorDialog *, bool) { return false; }
+        virtual void colorDialogSetCurrentColor(QColorDialog *, const QColor &) {}
+};
+
+//internal
+QGuiPlatformPlugin *qt_guiPlatformPlugin();
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+
+#endif // QGUIPLATFORMPLUGIN_H
diff --git a/src/gui/kernel/qkde.cpp b/src/gui/kernel/qkde.cpp
index 6c8909f..edc53ac 100644
--- a/src/gui/kernel/qkde.cpp
+++ b/src/gui/kernel/qkde.cpp
@@ -141,14 +141,33 @@ QString QKde::kdeStyle()
         return QLatin1String("windows");
 }
 
-/*!\internal
-  placeholder to load icon from kde.
-  to be implemented
- */
-QIcon QKde::kdeIcon(const QString &name)
+
+int QKde::kdeToolButtonStyle()
+{
+    QSettings settings(QKde::kdeHome() + QLatin1String("/share/config/kdeglobals"),
+                        QSettings::IniFormat);
+    settings.beginGroup(QLatin1String("Toolbar style"));
+    QString toolbarStyle = settings.value(QLatin1String("ToolButtonStyle"), QLatin1String("TextBesideIcon")).toString();
+    if (toolbarStyle == QLatin1String("TextBesideIcon"))
+        return Qt::ToolButtonTextBesideIcon;
+    else if (toolbarStyle == QLatin1String("TextOnly"))
+        return Qt::ToolButtonTextOnly;
+    else if (toolbarStyle == QLatin1String("TextUnderIcon"))
+        return Qt::ToolButtonTextUnderIcon;
+
+    return Qt::ToolButtonTextBesideIcon;
+}
+
+int QKde::kdeToolBarIconSize()
 {
-    //###todo
-    return QIcon();
+    static int iconSize = -1;
+    if (iconSize == -1) {
+        QSettings settings(QKde::kdeHome() + QLatin1String("/share/config/kdeglobals"),
+                            QSettings::IniFormat);
+                            settings.beginGroup(QLatin1String("ToolbarIcons"));
+        iconSize = settings.value(QLatin1String("Size")).toInt();
+    }
+    return iconSize;
 }
 
 QT_END_NAMESPACE
diff --git a/src/gui/kernel/qkde_p.h b/src/gui/kernel/qkde_p.h
index 4063f0e..c22a145 100644
--- a/src/gui/kernel/qkde_p.h
+++ b/src/gui/kernel/qkde_p.h
@@ -61,12 +61,17 @@
 
 QT_BEGIN_NAMESPACE
 
-// This namespace contains helper function to help KDE integration
+/*!\internal
+   This namespace contains helper function to help KDE integration
+   They are only used if we detect the use of KDE and the KDE platform plugin is not found (old KDE version)
+   Or if the detected KDE version is KDE3
+*/
 namespace QKde {
     QString kdeHome();
     QString kdeStyle();
     QPalette kdePalette();
-    QIcon kdeIcon(const QString &name);
+    int kdeToolButtonStyle();
+    int kdeToolBarIconSize();
 }