Rename kwin to twin (Part 2 of 2)

12 files changed, 3585 insertions, 0 deletions

diff --git a/twin/lib/CMakeLists.txt b/twin/lib/CMakeLists.txt
new file mode 100644
index 000000000..26f0809af
--- /dev/null
+++ b/twin/lib/CMakeLists.txt
@@ -0,0 +1,43 @@
+#################################################
+#
+#  (C) 2010-2011 Serghei Amelian
+#  serghei (DOT) amelian (AT) gmail.com
+#
+#  Improvements and feedback are welcome
+#
+#  This file is released under GPL >= 2
+#
+#################################################
+
+include_directories(
+  ${CMAKE_CURRENT_BINARY_DIR}
+  ${CMAKE_CURRENT_SOURCE_DIR}
+  ${TDE_INCLUDE_DIR}
+  ${TQT_INCLUDE_DIRS}
+)
+
+link_directories(
+  ${TQT_LIBRARY_DIRS}
+)
+
+
+##### tdecorations (shared) #####################
+
+set( target tdecorations )
+
+set( ${target}_SRCS
+  kdecoration.cpp kdecoration_p.cpp kdecoration_plugins_p.cpp
+  kdecorationfactory.cpp kcommondecoration.cpp
+)
+
+tde_add_library( ${target} SHARED AUTOMOC
+  SOURCES ${${target}_SRCS}
+  VERSION 1.0.0
+  LINK tdecore-shared
+  DESTINATION ${LIB_INSTALL_DIR}
+)
+
+##### headers ###################################
+
+install( FILES kdecoration.h kdecoration_p.h kdecoration_plugins_p.h kdecorationfactory.h kcommondecoration.h
+         DESTINATION ${INCLUDE_INSTALL_DIR} )
diff --git a/twin/lib/Makefile.am b/twin/lib/Makefile.am
new file mode 100644
index 000000000..af19b7df3
--- /dev/null
+++ b/twin/lib/Makefile.am
@@ -0,0 +1,20 @@
+# FRAME libtwin???
+lib_LTLIBRARIES = libtdecorations.la
+
+libtdecorations_la_SOURCES = kdecoration.cpp kdecoration_p.cpp kdecoration_plugins_p.cpp \
+        kdecorationfactory.cpp kcommondecoration.cpp
+libtdecorations_la_LIBADD = $(LIB_TDECORE)
+libtdecorations_la_LDFLAGS = $(all_libraries) -version-info 1:0:0 -no-undefined
+
+# FRAME
+include_HEADERS = kdecoration.h kdecoration_p.h kdecoration_plugins_p.h \
+        kdecorationfactory.h kcommondecoration.h
+
+INCLUDES = $(all_includes)
+METASOURCES = AUTO
+
+include ../../admin/Doxyfile.am
+
+messages: rc.cpp
+	$(XGETTEXT) `find . -name \*.cpp` -o $(podir)/twin_lib.pot
+	-rm rc.cpp
diff --git a/twin/lib/kcommondecoration.cpp b/twin/lib/kcommondecoration.cpp
new file mode 100644
index 000000000..4a667c7b4
--- /dev/null
+++ b/twin/lib/kcommondecoration.cpp
@@ -0,0 +1,991 @@
+/*
+  This file is part of the KDE project.
+
+  Copyright (C) 2005 Sandro Giessl <sandro@giessl.com>
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation
+  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+  and/or sell copies of the Software, and to permit persons to whom the
+  Software is furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+  DEALINGS IN THE SOFTWARE.
+ */
+
+#include <tqapplication.h>
+#include <tqcursor.h>
+#include <tqdatetime.h>
+#include <tqlabel.h>
+#include <tqtooltip.h>
+#include <tqwidget.h>
+
+#include <kdebug.h>
+
+#include <kapplication.h>
+#include <kdecorationfactory.h>
+#include <klocale.h>
+
+#include <X11/Xlib.h>
+#include <X11/Xatom.h>
+
+#include "kcommondecoration.h"
+#include "kcommondecoration.moc"
+
+KCommonDecoration::KCommonDecoration(KDecorationBridge* bridge, KDecorationFactory* factory)
+    : KDecoration (bridge, factory),
+        m_previewWidget(0),
+        btnHideMinWidth(200),
+        btnHideLastWidth(0),
+        closing(false)
+{
+    // sizeof(...) is calculated at compile time
+    memset(m_button, 0, sizeof(KCommonDecorationButton *) * NumButtons);
+}
+
+KCommonDecoration::~KCommonDecoration()
+{
+    for (int n=0; n<NumButtons; n++) {
+        if (m_button[n]) delete m_button[n];
+    }
+    delete m_previewWidget;
+}
+
+bool KCommonDecoration::decorationBehaviour(DecorationBehaviour behaviour) const
+{
+    switch (behaviour) {
+        case DB_MenuClose:
+            return false;
+
+        case DB_WindowMask:
+            return false;
+
+        case DB_ButtonHide:
+            return true;
+    }
+
+    return false;
+}
+
+int KCommonDecoration::layoutMetric(LayoutMetric lm, bool, const KCommonDecorationButton *) const
+{
+    switch (lm) {
+        case LM_BorderLeft:
+        case LM_BorderRight:
+        case LM_BorderBottom:
+        case LM_TitleEdgeTop:
+        case LM_TitleEdgeBottom:
+        case LM_TitleEdgeLeft:
+        case LM_TitleEdgeRight:
+        case LM_TitleBorderLeft:
+        case LM_TitleBorderRight:
+            return 5;
+
+
+        case LM_ButtonWidth:
+        case LM_ButtonHeight:
+        case LM_TitleHeight:
+            return 20;
+
+        case LM_ButtonSpacing:
+            return 5;
+
+        case LM_ButtonMarginTop:
+        case LM_RightButtonsMarginTop:
+            return 0;
+
+        case LM_ExplicitButtonSpacer:
+            return 5;
+
+        default:
+            return 0;
+    }
+}
+
+void KCommonDecoration::init()
+{
+    createMainWidget(TQt::WNoAutoErase);
+
+    // for flicker-free redraws
+    widget()->setBackgroundMode(NoBackground);
+
+    widget()->installEventFilter( this );
+
+    resetLayout();
+
+    connect(this, TQT_SIGNAL(keepAboveChanged(bool) ), TQT_SLOT(keepAboveChange(bool) ) );
+    connect(this, TQT_SIGNAL(keepBelowChanged(bool) ), TQT_SLOT(keepBelowChange(bool) ) );
+
+    updateCaption();
+}
+
+void KCommonDecoration::reset( unsigned long changed )
+{
+    if (changed & SettingButtons) {
+        resetLayout();
+        widget()->update();
+    }
+}
+
+TQRegion KCommonDecoration::cornerShape(WindowCorner)
+{
+    return TQRegion();
+}
+
+void KCommonDecoration::updateCaption()
+{
+    // This should be reimplemented in decorations for better efficiency
+    widget()->update();
+}
+
+void KCommonDecoration::borders( int& left, int& right, int& top, int& bottom ) const
+{
+    left = layoutMetric(LM_BorderLeft);
+    right = layoutMetric(LM_BorderRight);
+    bottom = layoutMetric(LM_BorderBottom);
+    top = layoutMetric(LM_TitleHeight) +
+            layoutMetric(LM_TitleEdgeTop) +
+            layoutMetric(LM_TitleEdgeBottom);
+
+    updateLayout(); // TODO!! don't call everytime we are in ::borders
+}
+
+void KCommonDecoration::updateLayout() const
+{
+    TQRect r = widget()->rect();
+    int r_x, r_y, r_x2, r_y2;
+    r.coords(&r_x, &r_y, &r_x2, &r_y2);
+
+    // layout preview widget
+    if (m_previewWidget) {
+        const int borderLeft = layoutMetric(LM_BorderLeft);
+        const int borderRight = layoutMetric(LM_BorderRight);
+        const int borderBottom = layoutMetric(LM_BorderBottom);
+        const int titleHeight = layoutMetric(LM_TitleHeight);
+        const int titleEdgeTop = layoutMetric(LM_TitleEdgeTop);
+        const int titleEdgeBottom = layoutMetric(LM_TitleEdgeBottom);
+
+        int left = r_x+borderLeft;
+        int top = r_y+titleEdgeTop+titleHeight+titleEdgeBottom;
+        int width = r_x2-borderRight-left+1;
+        int height = r_y2-borderBottom-top+1;
+        m_previewWidget->setGeometry(left, top, width, height);
+        moveWidget(left,top, m_previewWidget);
+        resizeWidget(width, height, m_previewWidget);
+    }
+
+    // resize buttons...
+    for (int n=0; n<NumButtons; n++) {
+        if (m_button[n]) {
+            TQSize newSize = TQSize(layoutMetric(LM_ButtonWidth, true, m_button[n]),
+                                  layoutMetric(LM_ButtonHeight, true, m_button[n]) );
+            if (newSize != m_button[n]->size() )
+                m_button[n]->setSize(newSize);
+        }
+    }
+
+    // layout buttons
+    int y = r_y + layoutMetric(LM_TitleEdgeTop) + layoutMetric(LM_ButtonMarginTop);
+    if (m_buttonsLeft.count() > 0) {
+        const int buttonSpacing = layoutMetric(LM_ButtonSpacing);
+        int x = r_x + layoutMetric(LM_TitleEdgeLeft);
+        for (ButtonContainer::const_iterator it = m_buttonsLeft.begin(); it != m_buttonsLeft.end(); ++it) {
+            bool elementLayouted = false;
+            if (*it) {
+                if (!(*it)->isHidden() ) {
+                    moveWidget(x,y, *it);
+                    x += layoutMetric(LM_ButtonWidth, true, ::tqqt_cast<KCommonDecorationButton*>(*it) );
+                    elementLayouted = true;
+                }
+            } else {
+                x+= layoutMetric(LM_ExplicitButtonSpacer);
+                elementLayouted = true;
+            }
+            if (elementLayouted && it != m_buttonsLeft.end() )
+                x += buttonSpacing;
+        }
+    }
+
+    if (m_buttonsRight.count() > 0) {
+        int y = r_y + layoutMetric(LM_TitleEdgeTop) + layoutMetric(LM_ButtonMarginTop) + layoutMetric(LM_RightButtonsMarginTop);
+        const int titleEdgeRightLeft = r_x2-layoutMetric(LM_TitleEdgeRight)+1;
+
+        const int buttonSpacing = layoutMetric(LM_ButtonSpacing);
+        int x = titleEdgeRightLeft - buttonContainerWidth(m_buttonsRight);
+        for (ButtonContainer::const_iterator it = m_buttonsRight.begin(); it != m_buttonsRight.end(); ++it) {
+            bool elementLayouted = false;
+            if (*it) {
+                if (!(*it)->isHidden() ) {
+                    moveWidget(x,y, *it);
+                    x += layoutMetric(LM_ButtonWidth, true, ::tqqt_cast<KCommonDecorationButton*>(*it) );;
+                    elementLayouted = true;
+                }
+            } else {
+                x += layoutMetric(LM_ExplicitButtonSpacer);
+                elementLayouted = true;
+            }
+            if (elementLayouted && it != m_buttonsRight.end() )
+                x += buttonSpacing;
+        }
+    }
+}
+
+void KCommonDecoration::updateButtons() const
+{
+    for (int n=0; n<NumButtons; n++)
+        if (m_button[n]) m_button[n]->update();
+}
+
+void KCommonDecoration::resetButtons() const
+{
+    for (int n=0; n<NumButtons; n++)
+        if (m_button[n]) m_button[n]->reset(KCommonDecorationButton::ManualReset);
+}
+
+void KCommonDecoration::resetLayout()
+{
+    for (int n=0; n<NumButtons; n++) {
+        if (m_button[n]) {
+            delete m_button[n];
+            m_button[n] = 0;
+        }
+    }
+    m_buttonsLeft.clear();
+    m_buttonsRight.clear();
+
+    delete m_previewWidget;
+    m_previewWidget = 0;
+
+    // shown instead of the window contents in decoration previews
+    if(isPreview() ) {
+        m_previewWidget = new TQLabel(i18n("%1 is the name of window decoration style", "<center><b>%1 preview</b></center>").arg(visibleName() ), widget());
+        m_previewWidget->show();
+    }
+
+    addButtons(m_buttonsLeft,
+               options()->customButtonPositions() ? options()->titleButtonsLeft() : defaultButtonsLeft(),
+               true);
+    addButtons(m_buttonsRight,
+               options()->customButtonPositions() ? options()->titleButtonsRight() : defaultButtonsRight(),
+               false);
+
+    updateLayout();
+
+    const int minTitleBarWidth = 35;
+    btnHideMinWidth = buttonContainerWidth(m_buttonsLeft,true) + buttonContainerWidth(m_buttonsRight,true) +
+            layoutMetric(LM_TitleEdgeLeft,false) + layoutMetric(LM_TitleEdgeRight,false) +
+            layoutMetric(LM_TitleBorderLeft,false) + layoutMetric(LM_TitleBorderRight,false) +
+            minTitleBarWidth;
+    btnHideLastWidth = 0;
+}
+
+int KCommonDecoration::buttonsLeftWidth() const
+{
+    return buttonContainerWidth(m_buttonsLeft);
+}
+
+int KCommonDecoration::buttonsRightWidth() const
+{
+    return buttonContainerWidth(m_buttonsRight);
+}
+
+int KCommonDecoration::buttonContainerWidth(const ButtonContainer &btnContainer, bool countHidden) const
+{
+    int explicitSpacer = layoutMetric(LM_ExplicitButtonSpacer);
+
+    int shownElementsCount = 0;
+
+    int w = 0;
+    for (ButtonContainer::const_iterator it = btnContainer.begin(); it != btnContainer.end(); ++it) {
+        if (*it) {
+            if (countHidden || !(*it)->isHidden() ) {
+                w += (*it)->width();
+                ++shownElementsCount;
+            }
+        } else {
+            w += explicitSpacer;
+            ++shownElementsCount;
+        }
+    }
+    w += layoutMetric(LM_ButtonSpacing)*(shownElementsCount-1);
+
+    return w;
+}
+
+bool KCommonDecoration::isModalSystemNotification()
+{
+    unsigned char *data = 0;
+    Atom actual;
+    int format, result;
+    unsigned long n, left;
+    Atom kde_wm_system_modal_notification;
+    kde_wm_system_modal_notification = XInternAtom(qt_xdisplay(), "_KDE_WM_MODAL_SYS_NOTIFICATION", False);
+    result = XGetWindowProperty(qt_xdisplay(), windowId(), kde_wm_system_modal_notification, 0L, 1L, False, XA_CARDINAL, &actual, &format, &n, &left, /*(unsigned char **)*/ &data);
+    if (result == Success && data != None && format == 32 )
+        {
+        return TRUE;
+        }
+    return FALSE;
+}
+
+void KCommonDecoration::addButtons(ButtonContainer &btnContainer, const TQString& s, bool isLeft)
+{
+    if (s.length() > 0) {
+        for (unsigned n=0; n < s.length(); n++) {
+            KCommonDecorationButton *btn = 0;
+            switch (s[n]) {
+              case 'M': // Menu button
+                  if (!isModalSystemNotification()) {
+                      if (!m_button[MenuButton]){
+                          btn = createButton(MenuButton);
+                          if (!btn) break;
+                          btn->setTipText(i18n("Menu") );
+                          btn->setRealizeButtons(Qt::LeftButton|Qt::RightButton);
+                          connect(btn, TQT_SIGNAL(pressed()), TQT_SLOT(menuButtonPressed()));
+                          connect(btn, TQT_SIGNAL(released()), this, TQT_SLOT(menuButtonReleased()));
+
+                          m_button[MenuButton] = btn;
+                      }
+                  }
+                  break;
+              case 'S': // OnAllDesktops button
+                  if (!isModalSystemNotification()) {
+                      if (!m_button[OnAllDesktopsButton]){
+                          btn = createButton(OnAllDesktopsButton);
+                          if (!btn) break;
+                          const bool oad = isOnAllDesktops();
+                          btn->setTipText(oad?i18n("Not on all desktops"):i18n("On all desktops") );
+                          btn->setToggleButton(true);
+                          btn->setOn( oad );
+                          connect(btn, TQT_SIGNAL(clicked()), TQT_SLOT(toggleOnAllDesktops()));
+
+                          m_button[OnAllDesktopsButton] = btn;
+                      }
+                  }
+                  break;
+              case 'H': // Help button
+                  if ((!m_button[HelpButton]) && providesContextHelp()){
+                      btn = createButton(HelpButton);
+                      if (!btn) break;
+                      btn->setTipText(i18n("Help") );
+                      connect(btn, TQT_SIGNAL(clicked()), TQT_SLOT(showContextHelp()));
+
+                      m_button[HelpButton] = btn;
+                  }
+                  break;
+              case 'I': // Minimize button
+                  if ((!m_button[MinButton]) && isMinimizable()){
+                      btn = createButton(MinButton);
+                      if (!btn) break;
+                      btn->setTipText(i18n("Minimize") );
+                      connect(btn, TQT_SIGNAL(clicked()), TQT_SLOT(minimize()));
+
+                      m_button[MinButton] = btn;
+                  }
+                  break;
+              case 'A': // Maximize button
+                  if ((!m_button[MaxButton]) && isMaximizable()){
+                      btn = createButton(MaxButton);
+                      if (!btn) break;
+                      btn->setRealizeButtons(Qt::LeftButton|Qt::MidButton|Qt::RightButton);
+                      const bool max = maximizeMode()==MaximizeFull;
+                      btn->setTipText(max?i18n("Restore"):i18n("Maximize") );
+                      btn->setToggleButton(true);
+                      btn->setOn( max );
+                      connect(btn, TQT_SIGNAL(clicked()), TQT_SLOT(slotMaximize()));
+
+                      m_button[MaxButton] = btn;
+                  }
+                  break;
+              case 'X': // Close button
+                  if ((!m_button[CloseButton]) && isCloseable()){
+                      btn = createButton(CloseButton);
+                      if (!btn) break;
+                      btn->setTipText(i18n("Close") );
+                      connect(btn, TQT_SIGNAL(clicked()), TQT_SLOT(closeWindow()));
+
+                      m_button[CloseButton] = btn;
+                  }
+                  break;
+              case 'F': // AboveButton button
+                  if (!m_button[AboveButton]){
+                      btn = createButton(AboveButton);
+                      if (!btn) break;
+                      bool above = keepAbove();
+                      btn->setTipText(above?i18n("Do not keep above others"):i18n("Keep above others") );
+                      btn->setToggleButton(true);
+                      btn->setOn( above );
+                      connect(btn, TQT_SIGNAL(clicked()), TQT_SLOT(slotKeepAbove()));
+
+                      m_button[AboveButton] = btn;
+                  }
+                  break;
+              case 'B': // BelowButton button
+                  if (!m_button[BelowButton]){
+                      btn = createButton(BelowButton);
+                      if (!btn) break;
+                      bool below = keepBelow();
+                      btn->setTipText(below?i18n("Do not keep below others"):i18n("Keep below others") );
+                      btn->setToggleButton(true);
+                      btn->setOn( below );
+                      connect(btn, TQT_SIGNAL(clicked()), TQT_SLOT(slotKeepBelow()));
+
+                      m_button[BelowButton] = btn;
+                  }
+                  break;
+              case 'L': // Shade button
+                  if ((!m_button[ShadeButton]) && isShadeable()){
+                      btn = createButton(ShadeButton);
+                      if (!btn) break;
+                      bool shaded = isSetShade();
+                      btn->setTipText(shaded?i18n("Unshade"):i18n("Shade") );
+                      btn->setToggleButton(true);
+                      btn->setOn( shaded );
+                      connect(btn, TQT_SIGNAL(clicked()), TQT_SLOT(slotShade()));
+
+                      m_button[ShadeButton] = btn;
+                  }
+                  break;
+              case '_': // Spacer item
+                  btnContainer.append(0);
+            }
+
+
+            if (btn) {
+                btn->setLeft(isLeft);
+                btn->setSize(TQSize(layoutMetric(LM_ButtonWidth, true, btn),layoutMetric(LM_ButtonHeight, true, btn)) );
+                btn->show();
+                btnContainer.append(btn);
+            }
+
+        }
+    }
+}
+
+void KCommonDecoration::calcHiddenButtons()
+{
+    if (width() == btnHideLastWidth)
+        return;
+
+    btnHideLastWidth = width();
+
+    //Hide buttons in the following order:
+    KCommonDecorationButton* btnArray[] = { m_button[HelpButton], m_button[ShadeButton], m_button[BelowButton],
+        m_button[AboveButton], m_button[OnAllDesktopsButton], m_button[MaxButton],
+        m_button[MinButton], m_button[MenuButton], m_button[CloseButton] };
+    const int buttonsCount = sizeof( btnArray ) / sizeof( btnArray[ 0 ] );
+
+    int current_width = width();
+    int count = 0;
+
+    // Hide buttons
+    while (current_width < btnHideMinWidth && count < buttonsCount)
+    {
+        if (btnArray[count] ) {
+            current_width += btnArray[count]->width();
+            if (btnArray[count]->isVisible() )
+                btnArray[count]->hide();
+        }
+        count++;
+    }
+    // Show the rest of the buttons...
+    for(int i = count; i < buttonsCount; i++)
+    {
+        if (btnArray[i] ) {
+
+            if (! btnArray[i]->isHidden() )
+                break; // all buttons shown...
+
+            btnArray[i]->show();
+        }
+    }
+}
+
+void KCommonDecoration::show()
+{
+    if (decorationBehaviour(DB_ButtonHide) )
+        calcHiddenButtons();
+    widget()->show();
+}
+
+void KCommonDecoration::resize( const TQSize& s )
+{
+    widget()->resize( s );
+}
+
+TQSize KCommonDecoration::tqminimumSize() const
+{
+    const int minWidth = QMAX(layoutMetric(LM_TitleEdgeLeft), layoutMetric(LM_BorderLeft))
+            +QMAX(layoutMetric(LM_TitleEdgeRight), layoutMetric(LM_BorderRight))
+            +layoutMetric(LM_TitleBorderLeft)+layoutMetric(LM_TitleBorderRight);
+    return TQSize(minWidth,
+                 layoutMetric(LM_TitleEdgeTop)+layoutMetric(LM_TitleHeight)
+                         +layoutMetric(LM_TitleEdgeBottom)
+                         +layoutMetric(LM_BorderBottom) );
+}
+
+void KCommonDecoration::maximizeChange()
+{
+    if( m_button[MaxButton] ) {
+        m_button[MaxButton]->setOn( maximizeMode()==MaximizeFull);
+        m_button[MaxButton]->setTipText( (maximizeMode()!=MaximizeFull) ?
+                i18n("Maximize")
+            : i18n("Restore"));
+        m_button[MaxButton]->reset(KCommonDecorationButton::StateChange);
+    }
+    updateWindowShape();
+    widget()->update();
+}
+
+void KCommonDecoration::desktopChange()
+{
+    if ( m_button[OnAllDesktopsButton] ) {
+        m_button[OnAllDesktopsButton]->setOn( isOnAllDesktops() );
+        m_button[OnAllDesktopsButton]->setTipText( isOnAllDesktops() ?
+                i18n("Not on all desktops")
+            : i18n("On all desktops"));
+        m_button[OnAllDesktopsButton]->reset(KCommonDecorationButton::StateChange);
+    }
+}
+
+void KCommonDecoration::shadeChange()
+{
+    if ( m_button[ShadeButton] ) {
+        bool shaded = isSetShade();
+        m_button[ShadeButton]->setOn( shaded );
+        m_button[ShadeButton]->setTipText( shaded ?
+                i18n("Unshade")
+            : i18n("Shade"));
+        m_button[ShadeButton]->reset(KCommonDecorationButton::StateChange);
+    }
+}
+
+void KCommonDecoration::iconChange()
+{
+    if (m_button[MenuButton])
+    {
+        m_button[MenuButton]->update();
+        m_button[MenuButton]->reset(KCommonDecorationButton::IconChange);
+    }
+}
+
+void KCommonDecoration::activeChange()
+{
+    updateButtons();
+    widget()->update(); // do something similar to updateCaption here
+}
+
+void KCommonDecoration::captionChange()
+{
+    updateCaption();
+}
+
+void KCommonDecoration::keepAboveChange(bool above)
+{
+    if (m_button[AboveButton])
+    {
+        m_button[AboveButton]->setOn(above);
+        m_button[AboveButton]->setTipText( above?i18n("Do not keep above others"):i18n("Keep above others") );
+        m_button[AboveButton]->reset(KCommonDecorationButton::StateChange);
+    }
+
+    if (m_button[BelowButton] && m_button[BelowButton]->isOn())
+    {
+        m_button[BelowButton]->setOn(false);
+        m_button[BelowButton]->setTipText( i18n("Keep below others") );
+        m_button[BelowButton]->reset(KCommonDecorationButton::StateChange);
+    }
+}
+
+void KCommonDecoration::keepBelowChange(bool below)
+{
+    if (m_button[BelowButton])
+    {
+        m_button[BelowButton]->setOn(below);
+        m_button[BelowButton]->setTipText( below?i18n("Do not keep below others"):i18n("Keep below others") );
+        m_button[BelowButton]->reset(KCommonDecorationButton::StateChange);
+    }
+
+    if (m_button[AboveButton] && m_button[AboveButton]->isOn())
+    {
+        m_button[AboveButton]->setOn(false);
+        m_button[AboveButton]->setTipText( i18n("Keep above others") );
+        m_button[AboveButton]->reset(KCommonDecorationButton::StateChange);
+    }
+}
+
+void KCommonDecoration::slotMaximize()
+{
+    if (m_button[MaxButton])
+    {
+        maximize(m_button[MaxButton]->lastMousePress() );
+    }
+}
+
+void KCommonDecoration::slotShade()
+{
+    setShade( !isSetShade() );
+}
+
+void KCommonDecoration::slotKeepAbove()
+{
+    setKeepAbove(!keepAbove() );
+}
+
+void KCommonDecoration::slotKeepBelow()
+{
+    setKeepBelow(!keepBelow() );
+}
+
+void KCommonDecoration::menuButtonPressed()
+{
+    static TQTime* t = NULL;
+    static KCommonDecoration* lastClient = NULL;
+    if (t == NULL)
+        t = new TQTime;
+    bool dbl = (lastClient==this && t->elapsed() <= TQApplication::doubleClickInterval());
+    lastClient = this;
+    t->start();
+    if (!dbl || !decorationBehaviour(DB_MenuClose) ) {
+        TQRect menuRect = m_button[MenuButton]->rect();
+        TQPoint menutop = m_button[MenuButton]->mapToGlobal(menuRect.topLeft());
+        TQPoint menubottom = m_button[MenuButton]->mapToGlobal(menuRect.bottomRight())+TQPoint(0,2);
+        KDecorationFactory* f = factory();
+        showWindowMenu(TQRect(menutop, menubottom));
+        if( !f->exists( this )) // 'this' was deleted
+            return;
+        m_button[MenuButton]->setDown(false);
+    }
+    else
+        closing = true;
+}
+
+void KCommonDecoration::menuButtonReleased()
+{
+    if(closing)
+        closeWindow();
+}
+
+void KCommonDecoration::resizeEvent(TQResizeEvent */*e*/)
+{
+    if (decorationBehaviour(DB_ButtonHide) )
+        calcHiddenButtons();
+
+    updateLayout();
+
+    updateWindowShape();
+    // FIXME: don't update() here! this would result in two paintEvent()s
+    // because there is already "something" else triggering the tqrepaint...
+//     widget()->update();
+}
+
+void KCommonDecoration::moveWidget(int x, int y, TQWidget *widget) const
+{
+    TQPoint p = widget->pos();
+    int oldX = p.y();
+    int oldY = p.x();
+
+    if (x!=oldX || y!=oldY)
+        widget->move(x,y);
+}
+
+void KCommonDecoration::resizeWidget(int w, int h, TQWidget *widget) const
+{
+    TQSize s = widget->size();
+    int oldW = s.width();
+    int oldH = s.height();
+
+    if (w!=oldW || h!=oldH)
+        widget->resize(w,h);
+}
+
+void KCommonDecoration::mouseDoubleClickEvent(TQMouseEvent *e)
+{
+    if( e->button() != Qt::LeftButton )
+        return;
+
+    int tb = layoutMetric(LM_TitleEdgeTop)+layoutMetric(LM_TitleHeight)+layoutMetric(LM_TitleEdgeBottom);
+    // when shaded, react on double clicks everywhere to make it easier to unshade. otherwise
+    // react only on double clicks in the title bar region...
+    if (isSetShade() || e->pos().y() <= tb )
+        titlebarDblClickOperation();
+}
+
+void KCommonDecoration::wheelEvent(TQWheelEvent *e)
+{
+    int tb = layoutMetric(LM_TitleEdgeTop)+layoutMetric(LM_TitleHeight)+layoutMetric(LM_TitleEdgeBottom);
+    if (isSetShade() || e->pos().y() <= tb )
+        titlebarMouseWheelOperation( e->delta());
+}
+
+KCommonDecoration::Position KCommonDecoration::mousePosition(const TQPoint &point) const
+{
+    const int corner = 18+3*layoutMetric(LM_BorderBottom, false)/2;
+    Position pos = PositionCenter;
+
+    TQRect r = widget()->rect();
+    int r_x, r_y, r_x2, r_y2;
+    r.coords(&r_x, &r_y, &r_x2, &r_y2);
+    int p_x = point.x();
+    int p_y = point.y();
+    const int borderLeft = layoutMetric(LM_BorderLeft);
+//     const int borderRight = layoutMetric(LM_BorderRight);
+    const int borderBottom = layoutMetric(LM_BorderBottom);
+    const int titleHeight = layoutMetric(LM_TitleHeight);
+    const int titleEdgeTop = layoutMetric(LM_TitleEdgeTop);
+    const int titleEdgeBottom = layoutMetric(LM_TitleEdgeBottom);
+    const int titleEdgeLeft = layoutMetric(LM_TitleEdgeLeft);
+    const int titleEdgeRight = layoutMetric(LM_TitleEdgeRight);
+
+    const int borderBottomTop = r_y2-borderBottom+1;
+    const int borderLeftRight = r_x+borderLeft-1;
+//     const int borderRightLeft = r_x2-borderRight+1;
+    const int titleEdgeLeftRight = r_x+titleEdgeLeft-1;
+    const int titleEdgeRightLeft = r_x2-titleEdgeRight+1;
+    const int titleEdgeBottomBottom = r_y+titleEdgeTop+titleHeight+titleEdgeBottom-1;
+    const int titleEdgeTopBottom = r_y+titleEdgeTop-1;
+
+    if (p_y <= titleEdgeTopBottom) {
+        if (p_x <= r_x+corner)
+            pos = PositionTopLeft;
+        else if (p_x >= r_x2-corner)
+            pos = PositionTopRight;
+        else
+            pos = PositionTop;
+    } else if (p_y <= titleEdgeBottomBottom) {
+        if (p_x <= titleEdgeLeftRight)
+            pos = PositionTopLeft;
+        else if (p_x >= titleEdgeRightLeft)
+            pos = PositionTopRight;
+        else
+            pos = PositionCenter; // title bar
+    } else if (p_y < borderBottomTop) {
+        if      (p_y < r_y2-corner) {
+            if (p_x <= borderLeftRight)
+                pos = PositionLeft;
+            else
+                pos = PositionRight;
+        } else {
+            if (p_x <= borderLeftRight)
+                pos = PositionBottomLeft;
+            else
+                pos = PositionBottomRight;
+        }
+    } else if(p_y >= borderBottomTop) {
+        if (p_x <= r_x+corner)
+            pos = PositionBottomLeft;
+        else if (p_x >= r_x2-corner)
+            pos = PositionBottomRight;
+        else
+            pos = PositionBottom;
+    }
+
+    return pos;
+}
+
+void KCommonDecoration::updateWindowShape()
+{
+    // don't mask the widget...
+    if (!decorationBehaviour(DB_WindowMask) )
+        return;
+
+    int w = widget()->width();
+    int h = widget()->height();
+
+    bool tl=true,tr=true,bl=true,br=true; // is there a transparent rounded corner in top-left? etc
+
+    TQDesktopWidget *desktop=KApplication::desktop();
+    // no transparent rounded corners if this window corner lines up with a screen corner
+    for(int screen=0; screen < desktop->numScreens(); ++screen)
+    {
+        TQRect fullscreen(desktop->screenGeometry(screen));
+        TQRect window = geometry();
+
+        if(window.topLeft()    == fullscreen.topLeft() ) tl = false;
+        if(window.topRight()   == fullscreen.topRight() ) tr = false;
+        if(window.bottomLeft() == fullscreen.bottomLeft() ) bl = false;
+        if(window.bottomRight()== fullscreen.bottomRight() ) br = false;
+    }
+
+    TQRegion mask(0, 0, w, h);
+
+    // Remove top-left corner.
+    if(tl)
+    {
+        mask -= cornerShape(WC_TopLeft);
+    }
+    // Remove top-right corner.
+    if(tr)
+    {
+        mask -= cornerShape(WC_TopRight);
+    }
+        // Remove top-left corner.
+    if(bl)
+    {
+        mask -= cornerShape(WC_BottomLeft);
+    }
+    // Remove top-right corner.
+    if(br)
+    {
+        mask -= cornerShape(WC_BottomRight);
+    }
+
+    setMask( mask );
+}
+
+bool KCommonDecoration::eventFilter( TQObject* o, TQEvent* e )
+{
+    if( TQT_BASE_OBJECT(o) != TQT_BASE_OBJECT(widget()))
+        return false;
+    switch( e->type())
+    {
+        case TQEvent::Resize:
+            resizeEvent(TQT_TQRESIZEEVENT(e) );
+            return true;
+        case TQEvent::Paint:
+            paintEvent(TQT_TQPAINTEVENT( e ));
+            return true;
+        case TQEvent::MouseButtonDblClick:
+            mouseDoubleClickEvent(TQT_TQMOUSEEVENT( e ));
+            return true;
+        case TQEvent::MouseButtonPress:
+            processMousePressEvent(TQT_TQMOUSEEVENT( e ));
+            return true;
+        case TQEvent::Wheel:
+            wheelEvent(TQT_TQWHEELEVENT( e ));
+            return true;
+        default:
+            return false;
+    }
+}
+
+const int SUPPORTED_WINDOW_TYPES_MASK = NET::NormalMask | NET::DesktopMask | NET::DockMask
+        | NET::ToolbarMask | NET::MenuMask | NET::DialogMask /*| NET::OverrideMask*/ | NET::TopMenuMask
+        | NET::UtilityMask | NET::SplashMask;
+
+bool KCommonDecoration::isToolWindow() const
+{
+    NET::WindowType type = windowType( SUPPORTED_WINDOW_TYPES_MASK );
+    return ((type==NET::Toolbar)||(type==NET::Utility)||(type==NET::Menu));
+}
+
+TQRect KCommonDecoration::titleRect() const
+{
+    int r_x, r_y, r_x2, r_y2;
+    TQT_TQRECT_OBJECT(widget()->rect()).coords(&r_x, &r_y, &r_x2, &r_y2);
+    const int titleEdgeLeft = layoutMetric(LM_TitleEdgeLeft);
+    const int titleEdgeTop = layoutMetric(LM_TitleEdgeTop);
+    const int titleEdgeRight = layoutMetric(LM_TitleEdgeRight);
+    const int titleEdgeBottom = layoutMetric(LM_TitleEdgeBottom);
+    const int titleBorderLeft = layoutMetric(LM_TitleBorderLeft);
+    const int titleBorderRight = layoutMetric(LM_TitleBorderRight);
+    const int ttlHeight = layoutMetric(LM_TitleHeight);
+    const int titleEdgeBottomBottom = r_y+titleEdgeTop+ttlHeight+titleEdgeBottom-1;
+    return TQRect(r_x+titleEdgeLeft+buttonsLeftWidth()+titleBorderLeft, r_y+titleEdgeTop,
+              r_x2-titleEdgeRight-buttonsRightWidth()-titleBorderRight-(r_x+titleEdgeLeft+buttonsLeftWidth()+titleBorderLeft),
+              titleEdgeBottomBottom-(r_y+titleEdgeTop) );
+}
+
+
+KCommonDecorationButton::KCommonDecorationButton(ButtonType type, KCommonDecoration *parent, const char *name)
+    : TQButton(parent->widget(), name),
+        m_decoration(parent),
+        m_type(type),
+        m_realizeButtons(Qt::LeftButton),
+        m_lastMouse(Qt::NoButton),
+        m_isLeft(true)
+{
+    setCursor(ArrowCursor);
+}
+
+KCommonDecorationButton::~KCommonDecorationButton()
+{
+}
+
+KCommonDecoration *KCommonDecorationButton::decoration() const
+{
+    return m_decoration;
+}
+
+ButtonType KCommonDecorationButton::type() const
+{
+    return m_type;
+}
+
+bool KCommonDecorationButton::isLeft() const
+{
+    return m_isLeft;
+}
+
+void KCommonDecorationButton::setLeft(bool left)
+{
+    m_isLeft = left;
+}
+
+void KCommonDecorationButton::setRealizeButtons(int btns)
+{
+    m_realizeButtons = btns;
+}
+
+void KCommonDecorationButton::setSize(const TQSize &s)
+{
+    if (!m_size.isValid() || s != size() ) {
+        m_size = s;
+
+        setFixedSize(m_size);
+        reset(SizeChange);
+    }
+}
+
+TQSize KCommonDecorationButton::tqsizeHint() const
+{
+    return m_size;
+}
+
+void KCommonDecorationButton::setTipText(const TQString &tip) {
+    TQToolTip::remove(this );
+    TQToolTip::add(this, tip );
+}
+
+void KCommonDecorationButton::setToggleButton(bool toggle)
+{
+    TQButton::setToggleButton(toggle);
+    reset(ToggleChange);
+}
+
+void KCommonDecorationButton::setOn(bool on)
+{
+    if (on != isOn() ) {
+        TQButton::setOn(on);
+        reset(StateChange);
+    }
+}
+
+void KCommonDecorationButton::mousePressEvent(TQMouseEvent* e)
+{
+    m_lastMouse = e->button();
+    // pass on event after changing button to LeftButton
+    TQMouseEvent me(e->type(), e->pos(), e->globalPos(),
+                   (e->button()&m_realizeButtons)?Qt::LeftButton:Qt::NoButton, e->state());
+
+    TQButton::mousePressEvent(&me);
+}
+
+void KCommonDecorationButton::mouseReleaseEvent(TQMouseEvent* e)
+{
+    m_lastMouse = e->button();
+    // pass on event after changing button to LeftButton
+    TQMouseEvent me(e->type(), e->pos(), e->globalPos(),
+                   (e->button()&m_realizeButtons)?Qt::LeftButton:Qt::NoButton, e->state());
+
+    TQButton::mouseReleaseEvent(&me);
+}
diff --git a/twin/lib/kcommondecoration.h b/twin/lib/kcommondecoration.h
new file mode 100644
index 000000000..93427b248
--- /dev/null
+++ b/twin/lib/kcommondecoration.h
@@ -0,0 +1,372 @@
+/*
+  This file is part of the KDE project.
+
+  Copyright (C) 2005 Sandro Giessl <sandro@giessl.com>
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation
+  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+  and/or sell copies of the Software, and to permit persons to whom the
+  Software is furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+  DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef KCOMMONDECORATION_H
+#define KCOMMONDECORATION_H
+
+#include <tqbutton.h>
+#include <tqvaluevector.h>
+
+#include "kdecoration.h"
+
+class KDecorationBridge;
+class KDecorationFactory;
+
+enum ButtonType {
+    HelpButton=0,
+    MaxButton,
+    MinButton,
+    CloseButton,
+    MenuButton,
+    OnAllDesktopsButton,
+    AboveButton,
+    BelowButton,
+    ShadeButton,
+    NumButtons
+};
+
+class KCommonDecorationButton;
+
+class KCommonDecorationButtonPrivate;
+class KCommonDecorationPrivate;
+
+/**
+ * This class eases development of decorations by implementing parts of KDecoration
+ * which are error prone and common for most decorations.
+ * It takes care of the window layout, button/action handling, and window mask creation.
+ */
+class KWIN_EXPORT KCommonDecoration : public KDecoration
+{
+    Q_OBJECT
+
+    public:
+        KCommonDecoration(KDecorationBridge* bridge, KDecorationFactory* factory);
+        virtual ~KCommonDecoration();
+
+        /**
+         * Used to calculate the decoration layout. The basic layout looks like this:
+         *
+         * Window:
+         *  _______________________________________________________________
+         * |           LM_TitleEdgeTop                                     |
+         * |_______________________________________________________________|
+         * | LM_TitleEdgeLeft |   [title]              | LM_TitleEdgeRight |
+         * |__________________|________________________|___________________|
+         * |           LM_TitleEdgeBottom                                  |
+         * |_______________________________________________________________|
+         * | |                                                           | |
+         * | |                                                           | |
+         * | |                                                           | |
+         * |LM_BorderLeft                                    LM_BorderRight|
+         * |_|___________________________________________________________|_|
+         * |           LM_BorderBottom                                     |
+         * |_______________________________________________________________|
+         *
+         * Title:
+         *  ___________________________________________________________________________________
+         * | LM_ButtonMarginTop             |                |              LM_ButtonMarginTop |
+         * |________________________________|                |_________________________________|
+         * | [Buttons] | LM_TitleBorderLeft | LM_TitleHeight | LM_TitleBorderRight | [Buttons] |
+         * |___________|____________________|________________|_____________________|___________|
+         *
+         * Buttons:
+         *  _____________________________________________________________________________________________
+         * | button | spacing | button | spacing | explicit spacer | spacing | ...    | spacing | button |
+         * |________|_________|________|_________|_________________|_________|________|_________|________|
+         *
+         * @see layoutMetric()
+         */
+        enum LayoutMetric
+        {
+            LM_BorderLeft,
+            LM_BorderRight,
+            LM_BorderBottom,
+            LM_TitleHeight,
+            LM_TitleBorderLeft,
+            LM_TitleBorderRight,
+            LM_TitleEdgeLeft,
+            LM_TitleEdgeRight,
+            LM_TitleEdgeTop,
+            LM_TitleEdgeBottom,
+            LM_ButtonWidth,
+            LM_ButtonHeight,
+            LM_ButtonSpacing,
+            LM_ExplicitButtonSpacer,
+            LM_ButtonMarginTop,
+            LM_RightButtonsMarginTop
+        };
+
+        enum DecorationBehaviour
+        {
+            DB_MenuClose, ///< Close window on double clicking the menu
+            DB_WindowMask, ///< Set a mask on the window
+            DB_ButtonHide  ///< Hide buttons when there is not enough space in the titlebar
+        };
+
+        enum WindowCorner
+        {
+            WC_TopLeft,
+            WC_TopRight,
+            WC_BottomLeft,
+            WC_BottomRight
+        };
+
+        /**
+         * The name of the decoration used in the decoration preview.
+         */
+        virtual TQString visibleName() const = 0;
+        /**
+         * The default title button order on the left.
+         * @see KDecoration::titleButtonsLeft()
+         * @see KDecoration::titleButtonsRight()
+         */
+        virtual TQString defaultButtonsLeft() const = 0;
+        /**
+         * The default title button order on the left.
+         * @see KDecoration::titleButtonsLeft()
+         * @see KDecoration::titleButtonsRight()
+         */
+        virtual TQString defaultButtonsRight() const = 0;
+
+        /**
+         * This controls whether some specific behaviour should be enabled or not.
+         * @see DecorationBehaviour
+         */
+        virtual bool decorationBehaviour(DecorationBehaviour behaviour) const;
+
+        /**
+         * This controls the layout of the decoration in various ways. It is
+         * possible to have a different layout for different window states.
+         * @param lm                 The layout element.
+         * @param respectWindowState Whether window states should be taken into account or a "default" state should be assumed.
+         * @param button             For LM_ButtonWidth and LM_ButtonHeight, the button.
+         */
+        virtual int layoutMetric(LayoutMetric lm, bool respectWindowState = true, const KCommonDecorationButton *button = 0) const;
+
+        /**
+         * Create a new title bar button. KCommonDecoration takes care of memory management.
+         * @return a pointer to the button, or 0 if the button should not be created.
+         */
+        virtual KCommonDecorationButton *createButton(ButtonType type) = 0;
+
+        /**
+         * @return the mask for the specific window corner.
+         */
+        virtual TQRegion cornerShape(WindowCorner corner);
+
+        /**
+         * This updates the window mask using the information provided by
+         * cornerShape(). Edges which are aligned to screen corners are not
+         * tqshaped for better usability (remember to paint these areas in paintEvent(), too).
+         * You normally don't want/need to reimplement updateWindowShape().
+         * @see cornerShape()
+         */
+        virtual void updateWindowShape();
+
+        /**
+         * Draw the window decoration.
+         */
+        virtual void paintEvent(TQPaintEvent *e) = 0;
+
+        /**
+         * This is used to update the painting of the title bar after the caption has been changed.
+         * Reimplement for a more efficient implementation (default calls update() on the whole decoration).
+         */
+        virtual void updateCaption();
+
+        int buttonsLeftWidth() const;
+        int buttonsRightWidth() const;
+
+        /**
+         * TODO: remove?
+         */
+        void updateLayout() const;
+        /**
+         * Makes sure all buttons are repainted.
+         */
+        void updateButtons() const;
+        /**
+         * Manually call reset() on each button.
+         */
+        void resetButtons() const;
+
+        /**
+         * Convenience method.
+         * @returns true if the window type is NET::Toolbar, NET::Utility, or NET::Menu
+         */
+        bool isToolWindow() const;
+        /**
+         * Convenience method.
+         * @returns the title rect.
+         */
+         TQRect titleRect() const;
+
+    public:
+        /**
+         * Handles widget and layout creation, call the base implementation when subclassing this member.
+         */
+        virtual void init();
+        /**
+         * Handles SettingButtons, call the base implementation when subclassing this member.
+         */
+        virtual void reset( unsigned long changed );
+        virtual void borders( int& left, int& right, int& top, int& bottom ) const;
+        virtual void show();
+        virtual void resize(const TQSize& s);
+        virtual TQSize tqminimumSize() const;
+        virtual void maximizeChange();
+        virtual void desktopChange();
+        virtual void shadeChange();
+        virtual void iconChange();
+        virtual void activeChange();
+        virtual void captionChange();
+    public slots:
+        void keepAboveChange(bool above);
+        void keepBelowChange(bool below);
+        void slotMaximize();
+        void slotShade();
+        void slotKeepAbove();
+        void slotKeepBelow();
+        void menuButtonPressed();
+        void menuButtonReleased();
+    public:
+        virtual Position mousePosition(const TQPoint &point) const;
+
+        virtual bool eventFilter( TQObject* o, TQEvent* e );
+        virtual void resizeEvent(TQResizeEvent *e);
+        virtual void mouseDoubleClickEvent(TQMouseEvent *e);
+        virtual void wheelEvent(TQWheelEvent *e);
+
+    private:
+        void resetLayout();
+
+        void moveWidget(int x, int y, TQWidget *widget) const;
+        void resizeWidget(int w, int h, TQWidget *widget) const;
+
+        typedef TQValueVector <KCommonDecorationButton*> ButtonContainer; ///< If the entry is 0, it's a spacer.
+        int buttonContainerWidth(const ButtonContainer &btnContainer, bool countHidden = false) const;
+        bool isModalSystemNotification();
+        void addButtons(ButtonContainer &btnContainer, const TQString& buttons, bool isLeft);
+
+        KCommonDecorationButton *m_button[NumButtons];
+
+        ButtonContainer m_buttonsLeft;
+        ButtonContainer m_buttonsRight;
+
+        TQWidget *m_previewWidget;
+
+        // button hiding for small windows
+        void calcHiddenButtons();
+        int btnHideMinWidth;
+        int btnHideLastWidth;
+
+        bool closing; // for menu doubleclick closing...
+
+        KCommonDecorationPrivate *d;
+};
+
+/**
+ * Title bar buttons of KCommonDecoration need to inherit this class.
+ */
+class KWIN_EXPORT KCommonDecorationButton : public TQButton
+{
+    friend class KCommonDecoration;
+
+    Q_OBJECT
+    TQ_OBJECT
+
+    public:
+        KCommonDecorationButton(ButtonType type, KCommonDecoration *parent, const char *name);
+        virtual ~KCommonDecorationButton();
+
+        /**
+         * These flags specify what has changed, e.g. the reason for a reset().
+         */
+        enum
+        {
+            ManualReset     = 1 << 0, ///< The button might want to do a full reset for some reason...
+            SizeChange      = 1 << 1, ///< The button size changed @see setSize()
+            ToggleChange    = 1 << 2, ///< The button toggle state has changed @see setToggleButton()
+            StateChange     = 1 << 3, ///< The button has been set pressed or not... @see setOn()
+            IconChange      = 1 << 4, ///< The window icon has been changed
+            DecorationReset = 1 << 5  ///< E.g. when decoration colors have changed
+        };
+        /**
+         * Initialize the button after size change etc.
+         */
+        virtual void reset(unsigned long changed) = 0;
+        /**
+         * @returns the KCommonDecoration the button belongs to.
+         */
+        KCommonDecoration *decoration() const;
+        /**
+         * @returns the button type.
+         * @see ButtonType
+         */
+        ButtonType type() const;
+
+        /**
+         * Whether the button is left of the titlebar or not.
+         */
+        bool isLeft() const;
+
+        /**
+         * Set which mouse buttons the button should honor. Used e.g. to prevent accidental right mouse clicks.
+         */
+        void setRealizeButtons(int btns);
+        /**
+         * Set the button size.
+         */
+        void setSize(const TQSize &s);
+        /**
+         * Set/update the button's tool tip
+         */
+        void setTipText(const TQString &tip);
+        /**
+         * The mouse button that has been clicked last time.
+         */
+        ButtonState lastMousePress() const { return m_lastMouse; }
+
+        TQSize tqsizeHint() const;
+
+    protected:
+        void setToggleButton(bool toggle);
+        void setOn(bool on);
+        void setLeft(bool left);
+        void mousePressEvent(TQMouseEvent *e);
+        void mouseReleaseEvent(TQMouseEvent *e);
+
+    private:
+        KCommonDecoration *m_decoration;
+        ButtonType m_type;
+        int m_realizeButtons;
+        TQSize m_size;
+        ButtonState m_lastMouse;
+
+        bool m_isLeft;
+
+        KCommonDecorationButtonPrivate *d;
+};
+
+#endif // KCOMMONDECORATION_H
diff --git a/twin/lib/kdecoration.cpp b/twin/lib/kdecoration.cpp
new file mode 100644
index 000000000..ee8eb866d
--- /dev/null
+++ b/twin/lib/kdecoration.cpp
@@ -0,0 +1,444 @@
+/*****************************************************************
+This file is part of the KDE project.
+
+Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+******************************************************************/
+
+#include "kdecoration.h"
+
+#include <kdebug.h>
+#include <tqapplication.h>
+#include <kglobal.h>
+#include <assert.h>
+#if defined Q_WS_X11 && ! defined K_WS_QTONLY
+#include <X11/Xlib.h>
+#include <fixx11h.h>
+#endif
+
+#include "kdecoration_p.h"
+#include "kdecorationfactory.h"
+
+KDecorationOptions* KDecoration::options_;
+
+KDecoration::KDecoration( KDecorationBridge* bridge, KDecorationFactory* factory )
+    :   bridge_( bridge ),
+	w_( NULL ),
+        factory_( factory )
+    {
+    factory->addDecoration( this );
+    }
+
+KDecoration::~KDecoration()
+    {
+    factory()->removeDecoration( this );
+    delete w_;
+    }
+
+const KDecorationOptions* KDecoration::options()
+    {
+    return options_;
+    }
+
+void KDecoration::createMainWidget( TQt::WFlags flags )
+    {
+    // FRAME check flags?
+    setMainWidget( new TQWidget( initialParentWidget(), "decoration widget", initialWFlags() | flags ));
+    }
+
+void KDecoration::setMainWidget( TQWidget* w )
+    {
+    assert( w_ == NULL );
+    w_ = w;
+    w->setMouseTracking( true );
+    widget()->resize( geometry().size());
+    }
+
+TQWidget* KDecoration::initialParentWidget() const
+    {
+    return bridge_->initialParentWidget();
+    }
+
+TQt::WFlags KDecoration::initialWFlags() const
+    {
+    return bridge_->initialWFlags();
+    }
+
+bool KDecoration::isActive() const
+    {
+    return bridge_->isActive();
+    }
+    
+bool KDecoration::isCloseable() const
+    {
+    return bridge_->isCloseable();
+    }
+
+bool KDecoration::isMaximizable() const
+    {
+    return bridge_->isMaximizable();
+    }
+    
+KDecoration::MaximizeMode KDecoration::maximizeMode() const
+    {
+    return bridge_->maximizeMode();
+    }
+    
+bool KDecoration::isMinimizable() const
+    {
+    return bridge_->isMinimizable();
+    }
+
+bool KDecoration::providesContextHelp() const
+    {
+    return bridge_->providesContextHelp();
+    }
+    
+int KDecoration::desktop() const
+    {
+    return bridge_->desktop();
+    }
+    
+bool KDecoration::isModal() const
+    {
+    return bridge_->isModal();
+    }
+    
+bool KDecoration::isShadeable() const
+    {
+    return bridge_->isShadeable();
+    }
+    
+bool KDecoration::isShade() const
+    {
+    return bridge_->isShade();
+    }
+    
+bool KDecoration::isSetShade() const
+    {
+    return bridge_->isSetShade();
+    }
+    
+bool KDecoration::keepAbove() const
+    {
+    return bridge_->keepAbove();
+    }
+
+bool KDecoration::keepBelow() const
+    {
+    return bridge_->keepBelow();
+    }
+
+bool KDecoration::isMovable() const
+    {
+    return bridge_->isMovable();
+    }
+
+bool KDecoration::isResizable() const
+    {
+    return bridge_->isResizable();
+    }
+
+NET::WindowType KDecoration::windowType( unsigned long supported_types ) const
+    { // this one is also duplicated in KDecorationFactory
+    return bridge_->windowType( supported_types );
+    }
+
+TQIconSet KDecoration::icon() const
+    {
+    return bridge_->icon();
+    }
+    
+TQString KDecoration::caption() const
+    {
+    return bridge_->caption();
+    }
+
+void KDecoration::processMousePressEvent( TQMouseEvent* e )
+    {
+    return bridge_->processMousePressEvent( e );
+    }
+
+void KDecoration::showWindowMenu( const TQRect &pos )
+    {
+    bridge_->showWindowMenu( pos );
+    }
+    
+void KDecoration::showWindowMenu( TQPoint pos )
+    {
+    bridge_->showWindowMenu( pos );
+    }
+
+void KDecoration::performWindowOperation( WindowOperation op )
+    {
+    bridge_->performWindowOperation( op );
+    }
+
+void KDecoration::setMask( const TQRegion& reg, int mode )
+    {
+    bridge_->setMask( reg, mode );
+    }
+    
+void KDecoration::clearMask()
+    {
+    bridge_->setMask( TQRegion(), 0 );
+    }
+    
+bool KDecoration::isPreview() const
+    {
+    return bridge_->isPreview();
+    }
+    
+TQRect KDecoration::geometry() const
+    {
+    return bridge_->geometry();
+    }
+    
+TQRect KDecoration::iconGeometry() const
+    {
+    return bridge_->iconGeometry();
+    }
+
+TQRegion KDecoration::unobscuredRegion( const TQRegion& r ) const
+    {
+    return bridge_->unobscuredRegion( r );
+    }
+
+TQWidget* KDecoration::workspaceWidget() const
+    {
+    return bridge_->workspaceWidget();
+    }
+        
+WId KDecoration::windowId() const
+    {
+    return bridge_->windowId();
+    }
+        
+void KDecoration::closeWindow()
+    {
+    bridge_->closeWindow();
+    }
+
+void KDecoration::maximize( ButtonState button )
+    {
+    performWindowOperation( options()->operationMaxButtonClick( button ));
+    }
+
+void KDecoration::maximize( MaximizeMode mode )
+    {
+    bridge_->maximize( mode );
+    }
+    
+void KDecoration::minimize()
+    {
+    bridge_->minimize();
+    }
+
+void KDecoration::showContextHelp()
+    {
+    bridge_->showContextHelp();
+    }
+    
+void KDecoration::setDesktop( int desktop )
+    {
+    bridge_->setDesktop( desktop );
+    }
+
+void KDecoration::toggleOnAllDesktops()
+    {
+    if( isOnAllDesktops())
+        setDesktop( bridge_->currentDesktop());
+    else
+        setDesktop( NET::OnAllDesktops );
+    }
+
+void KDecoration::titlebarDblClickOperation()
+    {
+    bridge_->titlebarDblClickOperation();
+    }
+
+void KDecoration::titlebarMouseWheelOperation( int delta )
+    {
+    bridge_->titlebarMouseWheelOperation( delta );
+    }
+
+void KDecoration::setShade( bool set )
+    {
+    bridge_->setShade( set );
+    }
+        
+void KDecoration::setKeepAbove( bool set )
+    {
+    bridge_->setKeepAbove( set );
+    }
+    
+void KDecoration::setKeepBelow( bool set )
+    {
+    bridge_->setKeepBelow( set );
+    }
+
+bool KDecoration::drawbound( const TQRect&, bool )
+    {
+    return false;
+    }
+
+bool KDecoration::animateMinimize( bool )
+    {
+    return false;
+    }
+
+bool KDecoration::windowDocked( Position )
+    {
+    return false;
+    }
+
+void KDecoration::helperShowHide( bool show )
+    {
+    bridge_->helperShowHide( show );
+    }
+
+void KDecoration::reset( unsigned long )
+    {
+    }
+
+void KDecoration::grabXServer()
+    {
+    bridge_->grabXServer( true );
+    }
+    
+void KDecoration::ungrabXServer()
+    {
+    bridge_->grabXServer( false );
+    }
+    
+KDecoration::Position KDecoration::mousePosition( const TQPoint& p ) const
+{
+    const int range = 16;
+    int bleft, bright, btop, bbottom;
+    borders( bleft, bright, btop, bbottom );
+    btop = KMIN( btop, 4 ); // otherwise whole titlebar would have resize cursor
+
+    Position m = PositionCenter;
+
+    if ( ( p.x() > bleft && p.x() < widget()->width() - bright )
+         && ( p.y() > btop && p.y() < widget()->height() - bbottom ) )
+        return PositionCenter;
+
+    if ( p.y() <= KMAX( range, btop ) && p.x() <= KMAX( range, bleft ))
+        m = PositionTopLeft;
+    else if ( p.y() >= widget()->height()- KMAX( range, bbottom )
+        && p.x() >= widget()->width()- KMAX( range, bright ))
+        m = PositionBottomRight;
+    else if ( p.y() >= widget()->height()- KMAX( range, bbottom ) && p.x() <= KMAX( range, bleft ))
+        m = PositionBottomLeft;
+    else if ( p.y() <= KMAX( range, btop ) && p.x() >= widget()->width()- KMAX( range, bright ))
+        m = PositionTopRight;
+    else if ( p.y() <= btop )
+        m = PositionTop;
+    else if ( p.y() >= widget()->height()-bbottom )
+        m = PositionBottom;
+    else if ( p.x() <= bleft )
+        m = PositionLeft;
+    else if ( p.x() >= widget()->width()-bright )
+        m = PositionRight;
+    else
+        m = PositionCenter;
+    return m;
+}
+
+KDecorationOptions::KDecorationOptions()
+    {
+    assert( KDecoration::options_ == NULL );
+    KDecoration::options_ = this;
+    }
+
+KDecorationOptions::~KDecorationOptions()
+    {
+    assert( KDecoration::options_ == this );
+    KDecoration::options_ = NULL;
+    }
+
+const TQColor& KDecorationOptions::color(ColorType type, bool active) const
+{
+    return(d->colors[type + (active ? 0 : NUM_COLORS)]);
+}
+
+const TQFont& KDecorationOptions::font(bool active, bool small) const
+{
+    if ( small )
+        return(active ? d->activeFontSmall : d->inactiveFontSmall);
+    else
+        return(active ? d->activeFont : d->inactiveFont);
+}
+
+const TQColorGroup& KDecorationOptions::tqcolorGroup(ColorType type, bool active) const
+{
+    int idx = type + (active ? 0 : NUM_COLORS);
+    if(d->cg[idx])
+        return(*d->cg[idx]);
+    d->cg[idx] = new TQColorGroup(Qt::black, d->colors[idx], d->colors[idx].light(150),
+                              d->colors[idx].dark(), d->colors[idx].dark(120),
+                              Qt::black, TQApplication::tqpalette().active().
+                              base());
+    return(*d->cg[idx]);
+}
+
+bool KDecorationOptions::customButtonPositions() const
+{
+    return d->custom_button_positions;
+}
+
+TQString KDecorationOptions::titleButtonsLeft() const
+{
+    return d->title_buttons_left;
+}
+
+TQString KDecorationOptions::titleButtonsRight() const
+{
+    return d->title_buttons_right;
+}
+
+bool KDecorationOptions::showTooltips() const
+{
+    return d->show_tooltips;
+}
+
+KDecorationOptions::BorderSize KDecorationOptions::preferredBorderSize( KDecorationFactory* factory ) const
+{
+    assert( factory != NULL );
+    if( d->cached_border_size == BordersCount ) // invalid
+        d->cached_border_size = d->findPreferredBorderSize( d->border_size,
+            factory->borderSizes());
+    return d->cached_border_size;
+}
+
+bool KDecorationOptions::moveResizeMaximizedWindows() const
+{
+    return d->move_resize_maximized_windows;
+}
+
+KDecorationDefines::WindowOperation KDecorationOptions::operationMaxButtonClick( TQt::ButtonState button ) const
+    {
+    return button == Qt::RightButton? d->OpMaxButtonRightClick : 
+           button == Qt::MidButton?   d->OpMaxButtonMiddleClick :
+                                      d->OpMaxButtonLeftClick;
+    }
+
+#include "kdecoration.moc"
diff --git a/twin/lib/kdecoration.h b/twin/lib/kdecoration.h
new file mode 100644
index 000000000..ae3c58e28
--- /dev/null
+++ b/twin/lib/kdecoration.h
@@ -0,0 +1,888 @@
+/*****************************************************************
+This file is part of the KDE project.
+
+Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+******************************************************************/
+
+#ifndef KDECORATION_H
+#define KDECORATION_H
+
+#include <tqcolor.h>
+#include <tqfont.h>
+#include <tqobject.h>
+#include <tqiconset.h>
+#include <netwm_def.h>
+#include <kdeversion.h>
+
+class KDecorationOptionsPrivate;
+class KDecorationBridge;
+class KDecorationPrivate;
+class KDecorationFactory;
+
+#define KWIN_EXPORT KDE_EXPORT
+
+/**
+ * This class provides a namespace for all decoration related classes.
+ * All shared types are defined here.
+ * @since 3.2
+ */
+class KWIN_EXPORT KDecorationDefines
+{
+public:
+    /**
+     * These values represent positions inside an area
+     */
+    enum Position
+        { // without prefix, they'd conflict with Qt::TopLeft etc. :(
+        PositionCenter         = 0x00,
+        PositionLeft           = 0x01,
+        PositionRight          = 0x02,
+        PositionTop            = 0x04,
+        PositionBottom         = 0x08,
+        PositionTopLeft        = PositionLeft | PositionTop,
+        PositionTopRight       = PositionRight | PositionTop,
+        PositionBottomLeft     = PositionLeft | PositionBottom,
+        PositionBottomRight    = PositionRight | PositionBottom
+        };
+    /**
+     * Maximize mode. These values specify how a window is maximized.
+     */
+    // these values are written to session files, don't change the order
+    enum MaximizeMode
+        {
+	MaximizeRestore    = 0, ///< The window is not maximized in any direction.
+	MaximizeVertical   = 1, ///< The window is maximized vertically.
+	MaximizeHorizontal = 2, ///< The window is maximized horizontally.
+	/// Equal to @p MaximizeVertical | @p MaximizeHorizontal
+	MaximizeFull = MaximizeVertical | MaximizeHorizontal 
+        };
+
+    enum WindowOperation
+        {
+        MaximizeOp = 5000,
+        RestoreOp,
+        MinimizeOp,
+        MoveOp,
+        UnrestrictedMoveOp,
+        ResizeOp,
+        UnrestrictedResizeOp,
+        CloseOp,
+        OnAllDesktopsOp,
+        ShadeOp,
+        KeepAboveOp,
+        KeepBelowOp,
+        OperationsOp,
+        WindowRulesOp,
+        ToggleStoreSettingsOp = WindowRulesOp, ///< @obsolete
+        HMaximizeOp,
+        VMaximizeOp,
+        LowerOp,
+        FullScreenOp,
+        NoBorderOp,
+	ShadowOp,
+        NoOp,
+        SetupWindowShortcutOp,
+        ApplicationRulesOp     ///< @since 3.5
+        };
+    /**
+     * Basic color types that should be recognized by all decoration styles.
+     * Decorations are not required to implement all the colors, but for the ones that
+     * are implemented the color setting for them should be obeyed.
+     */
+    enum ColorType
+	{
+	ColorTitleBar,   ///< The color for the titlebar
+	ColorTitleBlend, ///< The blend color for the titlebar
+	ColorFont,       ///< The titlebar text color
+	ColorButtonBg,   ///< The color to use for the titlebar buttons
+	ColorFrame,      ///< The color for the window frame (border)
+	ColorHandle,     ///< The color for the resize handle
+	NUM_COLORS
+	};
+
+    /**
+     * These flags specify which settings changed when rereading settings.
+     * Each setting in class KDecorationOptions specifies its matching flag.
+     */
+    enum
+        {
+        SettingDecoration = 1 << 0, ///< The decoration was changed
+        SettingColors     = 1 << 1, ///< The color palette was changed
+        SettingFont       = 1 << 2, ///< The titlebar font was changed
+        SettingButtons    = 1 << 3, ///< The button layout was changed
+        SettingTooltips   = 1 << 4, ///< The tooltip setting was changed
+        SettingBorder     = 1 << 5  ///< The border size setting was changed
+        };
+
+    /**
+     * Border size. KDecorationOptions::preferredBorderSize() returns
+     * one of these values.
+     */
+    enum BorderSize
+        {
+        BorderTiny,      ///< Minimal borders
+        BorderNormal,    ///< Standard size borders, the default setting
+        BorderLarge,     ///< Larger borders
+        BorderVeryLarge, ///< Very large borders
+        BorderHuge,      ///< Huge borders
+        BorderVeryHuge,  ///< Very huge borders
+        BorderOversized, ///< Oversized borders
+        BordersCount     ///< @internal
+        };
+
+    /**
+     * Used to find out which features the decoration supports.
+     * @see KDecorationFactory::supports()
+     */
+    enum Ability
+        {
+        AbilityAnnounceButtons = 0, ///< decoration supports AbilityButton* values (always use)
+        AbilityButtonMenu = 1000,   ///< decoration supports the menu button
+        AbilityButtonOnAllDesktops = 1001, ///< decoration supports the on all desktops button
+        AbilityButtonSpacer = 1002, ///< decoration supports inserting spacers between buttons
+        AbilityButtonHelp = 1003,   ///< decoration supports what's this help button
+        AbilityButtonMinimize = 1004,  ///< decoration supports a minimize button
+        AbilityButtonMaximize = 1005, ///< decoration supports a maximize button
+        AbilityButtonClose = 1006, ///< decoration supports a close button
+        AbilityButtonAboveOthers = 1007, ///< decoration supports an above button
+        AbilityButtonBelowOthers = 1008, ///< decoration supports a below button
+        AbilityButtonShade = 1009, ///< decoration supports a shade button
+        AbilityButtonResize = 1010, ///< decoration supports a resize button
+        ABILITY_DUMMY = 10000000
+        };
+
+    enum Requirement { REQUIREMENT_DUMMY = 1000000 };
+};    
+
+class KDecorationProvides
+    : public KDecorationDefines
+    {
+    public:
+        virtual bool provides( Requirement req ) = 0;
+    };
+
+/**
+ * This class holds various configuration settings for the decoration.
+ * It is accessible from the decorations either as KDecoration::options()
+ * or KDecorationFactory::options().
+ * @since 3.2
+ */
+class KWIN_EXPORT KDecorationOptions : public KDecorationDefines
+    {
+public:
+    KDecorationOptions();
+    virtual ~KDecorationOptions();
+    /**
+     * Returns the color that should be used for the given part of the decoration.
+     * The changed flags for this setting is SettingColors.
+     *
+     * @param type   The requested color type.
+     * @param active Whether the color should be for active or inactive windows.
+     */
+    const TQColor& color(ColorType type, bool active=true) const;
+    /**
+     * Returns a colorgroup using the given decoration color as the background.
+     * The changed flags for this setting is SettingColors.
+     *
+     * @param type   The requested color type.
+     * @param active Whether to return the color for active or inactive windows.
+     */
+    const TQColorGroup& tqcolorGroup(ColorType type, bool active=true) const;
+    /**
+     * Returns the active or inactive decoration font.
+     * The changed flags for this setting is SettingFont.
+     *
+     * @param active Whether to return the color for active or inactive windows.
+     * @param small  If @a true, returns a font that's suitable for tool windows.
+     */
+    const TQFont& font(bool active=true, bool small = false) const;
+    /**
+    * Returns @a true if the style should use custom button positions
+    * The changed flags for this setting is SettingButtons.
+    *
+    * @see titleButtonsLeft
+    * @see titleButtonsRight
+    */
+    bool customButtonPositions() const;
+    /**
+    * If customButtonPositions() returns true, titleButtonsLeft
+    * returns which buttons should be on the left side of the titlebar from left
+    * to right. Characters in the returned string have this meaning :
+    * @li 'M' menu button
+    * @li 'S' on_all_desktops button
+    * @li 'H' quickhelp button
+    * @li 'I' minimize ( iconify ) button
+    * @li 'A' maximize button
+    * @li 'X' close button
+    * @li 'F' keep_above_others button
+    * @li 'B' keep_below_others button
+    * @li 'L' shade button
+    * @li 'R' resize button
+    * @li '_' spacer
+    *
+    * The default ( which is also returned if customButtonPositions returns false )
+    * is "MS".
+    * Unknown buttons in the returned string must be ignored.
+    * The changed flags for this setting is SettingButtons.
+    */
+    TQString titleButtonsLeft() const;
+    /**
+    * If customButtonPositions() returns true, titleButtonsRight
+    * returns which buttons should be on the right side of the titlebar from left
+    * to right. Characters in the return string have the same meaning like
+    * in titleButtonsLeft().
+    *
+    * The default ( which is also returned if customButtonPositions returns false )
+    * is "HIAX".
+    * Unknown buttons in the returned string must be ignored.
+    * The changed flags for this setting is SettingButtons.
+    */
+    TQString titleButtonsRight() const;
+
+    /**
+    * @returns true if the style should use tooltips for window buttons
+    * The changed flags for this setting is SettingTooltips.
+    */
+    bool showTooltips() const;
+
+    /**
+     * The preferred border size selected by the user, e.g. for accessibility
+     * reasons, or when using high resolution displays. It's up to the decoration
+     * to decide which borders or if any borders at all will obey this setting.
+     * It is guaranteed that the returned value will be one of those
+     * returned by KDecorationFactory::borderSizes(), so if that one hasn't been
+     * reimplemented, BorderNormal is always returned.
+     * The changed flags for this setting is SettingBorder.
+     * @param factory the decoration factory used
+     */
+    BorderSize preferredBorderSize( KDecorationFactory* factory ) const;
+
+    /*
+     * When this functions returns false, moving and resizing of maximized windows
+     * is not allowed, and therefore the decoration is allowed to turn off (some of)
+     * its borders.
+     * The changed flags for this setting is SettingButtons.
+     */
+    bool moveResizeMaximizedWindows() const;
+
+    /**
+     * @internal
+     */
+    WindowOperation operationMaxButtonClick( TQt::ButtonState button ) const;
+
+    /**
+     * @internal
+     */
+    virtual unsigned long updateSettings() = 0; // returns SettingXYZ mask
+
+protected:
+    /**
+     * @internal
+     */
+    KDecorationOptionsPrivate* d;
+    };
+
+
+/**
+ * This is the base class for a decoration object. It provides functions
+ * that give various information about the decorated window, and also
+ * provides pure virtual functions for controlling the decoration that
+ * every decoration should implement.
+ * @since 3.2
+ */
+class KWIN_EXPORT KDecoration
+    : public TQObject, public KDecorationDefines
+    {
+    Q_OBJECT
+    public:
+	/**
+	 * Constructs a KDecoration object. Both the arguments are passed from
+	 * KDecorationFactory. Note that the initialization code of the decoration
+	 * should be done in the init() method.
+	 */
+	KDecoration( KDecorationBridge* bridge, KDecorationFactory* factory );
+	/**
+	 * Destroys the KDecoration.
+	 */
+	virtual ~KDecoration();
+
+	// requests from decoration
+
+	/**
+	 * Returns the KDecorationOptions object, which is used to access
+	 * configuration settings for the decoration.
+	 */
+        static const KDecorationOptions* options();
+	/**
+	 * Returns @a true if the decorated window is currently active.
+	 */
+	bool isActive() const;
+	/**
+	 * Returns @a true if the decoration window can be closed by the user.
+	 */
+	bool isCloseable() const;
+	/**
+	 * Returns @a true if the decorated window can be maximized.
+	 */
+	bool isMaximizable() const;
+	/**
+	 * Returns the current maximization mode of the decorated window.
+	 * Note that only fully maximized windows should be treated
+	 * as "maximized" (e.g. if the maximize button has only two states).
+	 */
+	MaximizeMode maximizeMode() const;
+	/**
+	 * Returns @a true if the decorated window can be minimized by the user.
+	 */
+	bool isMinimizable() const;
+	/**
+	 * Return @a true if the decorated window can show context help
+	 * (i.e. the decoration should provide the context help button).
+	 */
+        bool providesContextHelp() const;
+	/**
+	 * Returns the number of the virtual desktop the decorated window
+	 * is currently on (including NET::OnAllDesktops for being on all
+	 * desktops).
+	 */
+        int desktop() const;
+	/**
+	 * Convenience function that returns @a true if the window is on all
+	 * virtual desktops.
+	 */
+        bool isOnAllDesktops() const; // convenience
+	/**
+	 * Returns @a true if the decoration window is modal (usually a modal dialog).
+	 */
+        bool isModal() const;
+	/**
+	 * Returns @a true if the decorated window can be shaded.
+	 */
+        bool isShadeable() const;
+	/**
+	 * Returns @a true if the decorated window is currently shaded.
+         * If the window is e.g. hover unshaded, it's not considered to be shaded.
+         * This function should not be used for the shade titlebar button, use
+         * @ref isSetShade() instead.
+         *
+         * @see isSetShade
+	 */
+        bool isShade() const;
+	/**
+	 * Returns @a true if the decorated window was set to be shaded. This function
+         * returns also true if the window is e.g. hover unshaded, so it doesn't
+         * always correspond to the actual window state.
+         *
+         * @see isShade
+	 */
+        bool isSetShade() const;
+	/**
+	 * Returns @a true if the decorated window should be kept above other windows.
+	 */
+        bool keepAbove() const;
+	/**
+	 * Returns @a true if the decorated window should be kept below other windows.
+	 */
+        bool keepBelow() const;
+	/**
+	 * Returns @a true if the decorated window can be moved by the user.
+	 */
+        bool isMovable() const;
+	/**
+	 * Returns @a true if the decorated window can be resized by the user.
+	 */
+        bool isResizable() const;
+	/**
+	 * This function returns the window type of the decorated window.
+	 * The argument to this function is a mask of all window types
+	 * the decoration knows about (as the list of valid window types
+	 * is extended over time, and fallback types are specified in order
+	 * to support older code). For a description of all window types,
+	 * see the definition of the NET::WindowType type. Note that
+	 * some window types never have decorated windows.
+	 *
+	 * An example of usage:
+	 * @code
+	 * const unsigned long supported_types = NET::NormalMask | NET::DesktopMask
+	 * 	| NET::DockMask | NET::ToolbarMask | NET::MenuMask | NET::DialogMask
+	 * 	| NET::OverrideMask | NET::TopMenuMask | NET::UtilityMask | NET::SplashMask;
+	 *
+	 * NET::WindowType type = windowType( supported_types );
+	 *
+	 * if( type == NET::Utility || type == NET::Menu || type == NET::Toolbar )
+	 *    // ... use smaller decorations for tool window types
+	 * else
+	 *    // ... use normal decorations
+	 * @endcode
+	 */
+        NET::WindowType windowType( unsigned long supported_types ) const;
+	/**
+	 * Returns an icon set with the decorated window's icon.
+	 */
+	TQIconSet icon() const;
+	/**
+	 * Returns the decorated window's caption that should be shown in the titlebar.
+	 */
+	TQString caption() const;
+	/**
+	 * This function invokes the window operations menu. 
+	 * \param pos specifies the place on the screen where the menu should
+	 * show up. The menu pops up at the bottom-left corner of the specified
+	 * rectangle, unless there is no space, in which case the menu is
+	 * displayed above the rectangle.
+	 * 
+	 * \note Decorations that enable a double-click operation for the menu
+	 * button must ensure to call \a showWindowMenu() with the \a pos
+	 * rectangle set to the menu button geometry.
+	 * IMPORTANT: As a result of this function, the decoration object that
+	 * called it may be destroyed after the function returns. This means
+	 * that the decoration object must either return immediately after
+	 * calling showWindowMenu(), or it must use
+	 * KDecorationFactory::exists() to check it's still valid. For example,
+	 * the code handling clicks on the menu button should look similarly
+	 * like this:
+         *
+         * \code
+         * KDecorationFactory* f = factory(); // needs to be saved before
+         * showWindowMenu( button[MenuButton]->mapToGlobal( menuPoint ));
+         * if( !f->exists( this )) // destroyed, return immediately
+         *     return;
+	 * button[MenuButton]->setDown(false);
+         * \endcode
+	 */
+	void showWindowMenu( const TQRect &pos );
+
+	/**
+	 * Overloaded version of the above. 
+	 */
+	void showWindowMenu( TQPoint pos );
+        /**
+         * This function performs the given window operation. This function may destroy
+         * the current decoration object, just like showWindowMenu().
+         */
+	void performWindowOperation( WindowOperation op );
+	/**
+	 * If the decoration is non-rectangular, this function needs to be called
+	 * to set the tqshape of the decoration.
+	 *
+	 * @param reg  The tqshape of the decoration.
+	 * @param mode The X11 values Unsorted, YSorted, YXSorted and YXBanded that specify
+	 *             the sorting of the rectangles, default value is Unsorted.
+	 */
+        void setMask( const TQRegion& reg, int mode = 0 );
+	/**
+	 * This convenience function resets the tqshape mask.
+	 */
+        void clearMask(); // convenience
+	/**
+	 * If this function returns @a true, the decorated window is used as a preview
+	 * e.g. in the configuration module. In such case, the decoration can e.g.
+	 * show some information in the window area.
+	 */
+        bool isPreview() const;
+	/**
+	 * Returns the geometry of the decoration.
+	 */
+        TQRect geometry() const;
+	/**
+	 * Returns the icon geometry for the window, i.e. the geometry of the taskbar
+	 * entry. This is used mainly for window minimize animations. Note that
+	 * the geometry may be null.
+	 */
+        TQRect iconGeometry() const;
+        /**
+         * Returns the intersection of the given region with the region left
+         * unobscured by the windows stacked above the current one. You can use
+         * this function to, for example, try to keep the titlebar visible if
+         * there is a hole available. The region returned is in the coordinate
+         * space of the decoration.
+         * @param r The region you want to check for holes
+         */
+        TQRegion unobscuredRegion( const TQRegion& r ) const;
+	/**
+	 * Returns the main workspace widget. The main purpose of this function is to
+	 * allow painting the minimize animation or the transparent move bound on it.
+	 */
+        TQWidget* workspaceWidget() const;
+        /**
+         * Returns the handle of the window that is being decorated. It is possible
+         * the returned value will be 0.
+         * IMPORTANT: This function is meant for special purposes, and it
+         * usually should not be used. The main purpose is finding out additional
+         * information about the window's state. Also note that different kinds
+         * of windows are decorated: Toplevel windows managed by the window manager,
+         * test window in the window manager decoration module, and possibly also
+         * other cases.
+         * Careless abuse of this function will usually sooner or later lead
+         * to problems.
+         * @since 3.4
+         */
+        WId windowId() const;
+	/**
+	 * Convenience function that returns the width of the decoration.
+	 */
+        int width() const; // convenience
+	/**
+	 * Convenience function that returns the height of the decoration.
+	 */
+        int height() const;  // convenience
+	/**
+	 * This function is the default handler for mouse events. All mouse events
+	 * that are not handled by the decoration itself should be passed to it
+	 * in order to make work operations like window resizing by dragging borders etc.
+	 */
+	void processMousePressEvent( TQMouseEvent* e );
+
+	// requests to decoration
+
+	/**
+	 * This function is called immediately after the decoration object is created.
+	 * Due to some technical reasons, initialization should be done here
+	 * instead of in the constructor.
+	 */
+        virtual void init() = 0; // called once right after created
+	
+        /**
+         * This function should return mouse cursor position in the decoration.
+         * Positions at the edge will result in window resizing with mouse button
+         * pressed, center position will result in moving.
+         */
+	virtual Position mousePosition( const TQPoint& p ) const = 0;
+
+	/**
+	 * This function should return the distance from each window side to the inner
+	 * window. The sizes may depend on the state of the decorated window, such as
+	 * whether it's shaded. Decorations often turn off their bottom border when the
+	 * window is shaded, and turn off their left/right/bottom borders when
+	 * the window is maximized and moving and resizing of maximized windows is disabled.
+	 * This function mustn't do any repaints or resizes. Also, if the sizes returned
+	 * by this function don't match the real values, this may result in drawing errors
+	 * or other problems.
+	 *
+	 * @see KDecorationOptions::moveResizeMaximizedWindows()
+	 */
+        // mustn't do any repaints, resizes or anything like that
+	virtual void borders( int& left, int& right, int& top, int& bottom ) const = 0;
+	/**
+	 * This method is called by twin when the style should resize the decoration window.
+	 * The usual implementation is to resize the main widget of the decoration to the
+	 * given size.
+	 *
+	 * @param s Specifies the new size of the decoration window.
+	 */
+	virtual void resize( const TQSize& s ) = 0;
+	/**
+	 * This function should return the minimum required size for the decoration.
+	 * Note that the returned size shouldn't be too large, because it will be
+	 * used to keep the decorated window at least as large.
+	 */
+	virtual TQSize tqminimumSize() const = 0;
+	/**
+	 * This function is called whenever the window either becomes or stops being active.
+	 * Use isActive() to find out the current state.
+	 */
+        virtual void activeChange() = 0;
+	/**
+	 * This function is called whenever the caption changes. Use caption() to get it.
+	 */
+        virtual void captionChange() = 0;
+	/**
+	 * This function is called whenever the window icon changes. Use icon() to get it.
+	 */
+        virtual void iconChange() = 0;
+	/**
+	 * This function is called whenever the maximalization state of the window changes.
+	 * Use maximizeMode() to get the current state.
+	 */
+        virtual void maximizeChange() = 0;
+	/**
+	 * This function is called whenever the desktop for the window changes. Use
+	 * desktop() or isOnAllDesktops() to find out the current desktop
+	 * on which the window is.
+	 */
+        virtual void desktopChange() = 0;
+	/**
+	 * This function is called whenever the window is shaded or unshaded. Use
+	 * isShade() to get the current state.
+	 */
+        virtual void shadeChange() = 0;
+#if KDE_IS_VERSION( 3, 90, 0 )
+#warning Redo all the XYZChange() virtuals as signals.
+#endif
+    signals:
+        /**
+         * This signal is emitted whenever the window's keep-above state changes.
+         * @since 3.3
+         */
+        void keepAboveChanged( bool );
+        /**
+         * This signal is emitted whenever the window's keep-below state changes.
+         * @since 3.3
+         */
+        void keepBelowChanged( bool );
+    public:
+	/**
+	 * This function may be reimplemented to provide custom bound drawing
+	 * for transparent moving or resizing of the window.
+	 * @a False should be returned if the default implementation should be used.
+         * Note that if you e.g. paint the outline using a 5 pixels wide line,
+         * you should compensate for the 2 pixels that would make the window
+         * look larger.
+	 *
+	 * @param geom  The geometry at this the bound should be drawn
+	 * @param clear @a true if the bound should be cleared
+	 *
+	 * @see workspaceWidget() and geometry().
+	 */
+        virtual bool drawbound( const TQRect& geom, bool clear );
+	/**
+	 * This function may be reimplemented to provide custom minimize/restore animations
+	 * The reimplementation is allowed to perform X server grabs if necessary
+         * (only using the functions provided by this API, no direct Xlib calls), but no
+	 * futher event processing is allowed (i.e. no kapp->processEvents()).
+	 * @a False should be returned if the default implementation should be used.
+	 * Note that you should not use this function to force disabling of the animation.
+	 *
+	 * @see workspaceWidget(), geometry() and helperShowHide().
+	 */
+        virtual bool animateMinimize( bool minimize );
+        /**
+         * @internal Reserved.
+         */
+        // TODO position will need also values for top+left+bottom etc. docking ?
+        virtual bool windowDocked( Position side );
+	/**
+	 * This function is called to reset the decoration on settings changes.
+	 * It is usually invoked by calling KDecorationFactory::resetDecorations().
+	 *
+	 * @param changed Specifies which settings were changed, given by the SettingXXX masks
+	 */
+        virtual void reset( unsigned long changed );
+
+	// special
+
+	/**
+	 * This should be the first function called in init() to specify
+	 * the main widget of the decoration. The widget should be created
+	 * with parent specified by initialParentWidget() and flags
+	 * specified by initialWFlags().
+	 */	
+        void setMainWidget( TQWidget* );
+	/**
+	 * Convenience functions that creates and sets a main widget as necessary.
+	 * In such case, it's usually needed to install an event filter
+	 * on the main widget to receive important events on it.
+	 *
+	 * @param flags Additional widget flags for the main widget. Note that only
+	 *              flags that affect widget drawing are allowed. Window type flags
+	 *              like WX11BypassWM or WStyle_NoBorder are forbidden.
+	 */
+        void createMainWidget( TQt::WFlags flags = 0 );
+	/**
+	 * The parent widget that should be used for the main widget.
+	 */
+        TQWidget* initialParentWidget() const;
+	/**
+	 * The flags that should be used when creating the main widget.
+	 * It is possible to add more flags when creating the main widget, but only flags
+	 * that affect widget drawing are allowed. Window type flags like WX11BypassWM
+	 * or WStyle_NoBorder are forbidden.
+	 */
+        TQt::WFlags initialWFlags() const;
+	/**
+	 * This function is only allowed to be called once from animateMinimize().
+	 * It can be used if the window should be shown or hidden at a specific
+	 * time during the animation. It is forbidden to use this function
+	 * for other purposes.
+	 */
+        void helperShowHide( bool show );
+	/**
+	 * Returns the main widget for the decoration.
+	 */
+	TQWidget* widget();
+	/**
+	 * Returns the main widget for the decoration.
+	 */
+	const TQWidget* widget() const;
+	/**
+	 * Returns the factory that created this decoration.
+	 */
+        KDecorationFactory* factory() const;
+        /**
+         * Performs X server grab. It is safe to call it several times in a row.
+         */
+        void grabXServer();
+        /**
+         * Ungrabs X server (if the number of ungrab attempts matches the number of grab attempts).
+         */
+        void ungrabXServer();
+    public slots:
+	// requests from decoration
+
+	/**
+	 * This function can be called by the decoration to request 
+	 * closing of the decorated window. Note that closing the window
+	 * also involves destroying the decoration.
+         * IMPORTANT: This function may destroy the current decoration object,
+         * just like showWindowMenu().
+	 */
+	void closeWindow();
+        /*
+         * Changes the maximize mode of the decorated window. This function should
+         * be preferred to the other maximize() overload for reacting on clicks
+         * on the maximize titlebar button.
+         * NOTE: This function is new in KDE3.3. In order to support also KDE3.2,
+         * it is recommended to use code like this:
+         * \code
+         * ButtonState button = ... ;
+         * #if KDE_IS_VERSION( 3, 3, 0 )
+         * maximize( button );
+         * #else
+         * if( button == MidButton )
+	 *     maximize( maximizeMode() ^ MaximizeVertical );
+         * else if( button == RightButton )
+         *     maximize( maximizeMode() ^ MaximizeHorizontal );
+         * else
+         *     maximize( maximizeMode() == MaximizeFull ? MaximizeRestore : MaximizeFull );
+         * #endif
+         * \endcode
+         * @since 3.3
+         */
+#if KDE_IS_VERSION( 3, 90, 0 )
+#warning Update the docs.
+#endif
+        void maximize( ButtonState button );
+	/**
+	 * Set the maximize mode of the decorated window.
+	 * @param mode The maximization mode to be set.
+	 */
+	void maximize( MaximizeMode mode );
+	/**
+	 * Minimize the decorated window.
+	 */
+	void minimize();
+	/**
+	 * Start showing context help in the window (i.e. the mouse will enter
+	 * the what's this mode).
+	 */
+        void showContextHelp();
+        /**
+         * Moves the window to the given desktop. Use NET::OnAllDesktops for making
+         * the window appear on all desktops.
+         */
+        void setDesktop( int desktop );
+	/**
+	 * This function toggles the on-all-desktops state of the decorated window.
+	 */
+        void toggleOnAllDesktops(); // convenience
+	/**
+	 * This function performs the operation configured as titlebar double click
+	 * operation.
+	 */
+        void titlebarDblClickOperation();
+	/**
+	 * This function performs the operation configured as titlebar wheel mouse
+	 * operation.
+         * @param delta the mouse wheel delta
+         * @since 3.5
+	 */
+        void titlebarMouseWheelOperation( int delta );
+	/**
+	 * Shades or unshades the decorated window.
+	 * @param set Whether the window should be shaded
+	 */
+        void setShade( bool set );
+	/**
+	 * Sets or reset keeping this window above others.
+	 * @param set Whether to keep the window above others
+	 */
+        void setKeepAbove( bool set );
+	/**
+	 * Sets or reset keeping this window below others.
+	 * @param set Whether to keep the window below others
+	 */
+        void setKeepBelow( bool set );
+        /**
+         * @internal
+         */
+        void emitKeepAboveChanged( bool above ) { emit keepAboveChanged( above ); }
+        /**
+         * @internal
+         */
+        void emitKeepBelowChanged( bool below ) { emit keepBelowChanged( below ); }
+    private:
+	KDecorationBridge* bridge_;
+	TQWidget* w_;
+        KDecorationFactory* factory_;
+        friend class KDecorationOptions; // for options_
+        static KDecorationOptions* options_;
+        KDecorationPrivate* d;
+    };
+
+inline
+KDecorationDefines::MaximizeMode operator^( KDecorationDefines::MaximizeMode m1, KDecorationDefines::MaximizeMode m2 )
+    {
+    return KDecorationDefines::MaximizeMode( int(m1) ^ int(m2) );
+    }
+
+inline
+KDecorationDefines::MaximizeMode operator&( KDecorationDefines::MaximizeMode m1, KDecorationDefines::MaximizeMode m2 )
+    {
+    return KDecorationDefines::MaximizeMode( int(m1) & int(m2) );
+    }
+
+inline
+KDecorationDefines::MaximizeMode operator|( KDecorationDefines::MaximizeMode m1, KDecorationDefines::MaximizeMode m2 )
+    {
+    return KDecorationDefines::MaximizeMode( int(m1) | int(m2) );
+    }
+
+inline TQWidget* KDecoration::widget()
+    {
+    return w_;
+    }
+
+inline const TQWidget* KDecoration::widget() const
+    {
+    return w_;
+    }
+
+inline KDecorationFactory* KDecoration::factory() const
+    {
+    return factory_;
+    }
+
+inline bool KDecoration::isOnAllDesktops() const
+    {
+    return desktop() == NET::OnAllDesktops;
+    }
+
+inline int KDecoration::width() const
+    {
+    return geometry().width();
+    }
+    
+inline int KDecoration::height() const
+    {
+    return geometry().height();
+    }
+    
+#endif
diff --git a/twin/lib/kdecoration_p.cpp b/twin/lib/kdecoration_p.cpp
new file mode 100644
index 000000000..1e063d099
--- /dev/null
+++ b/twin/lib/kdecoration_p.cpp
@@ -0,0 +1,235 @@
+/*****************************************************************
+This file is part of the KDE project.
+
+Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+******************************************************************/
+
+#include "kdecoration_p.h"
+
+#include <kconfig.h>
+#include <kglobalsettings.h>
+#include <tqpalette.h>
+#include <tqapplication.h>
+#include <assert.h>
+
+KDecorationOptionsPrivate::KDecorationOptionsPrivate()
+    {
+    for(int i=0; i < NUM_COLORS*2; ++i)
+        cg[i] = NULL;
+    }
+
+KDecorationOptionsPrivate::~KDecorationOptionsPrivate()
+    {
+    int i;
+    for(i=0; i < NUM_COLORS*2; ++i)
+        {
+        if(cg[i])
+            {
+            delete cg[i];
+            cg[i] = NULL;
+            }
+        }
+    }
+
+void KDecorationOptionsPrivate::defaultKWinSettings()
+    {
+    title_buttons_left = "MS";
+    title_buttons_right = "HIAX";
+    custom_button_positions = false;
+    show_tooltips = true;
+    border_size = BorderNormal;
+    cached_border_size = BordersCount; // invalid
+    move_resize_maximized_windows = true;
+    OpMaxButtonRightClick = MaximizeOp;
+    OpMaxButtonMiddleClick = VMaximizeOp;
+    OpMaxButtonLeftClick = HMaximizeOp;
+    }
+
+unsigned long KDecorationOptionsPrivate::updateKWinSettings( KConfig* config )
+    {
+    unsigned long changed = 0;
+    TQString old_group = config->group();
+    config->setGroup( "WM" );
+
+// SettingColors
+    TQColor old_colors[NUM_COLORS*2];
+    for( int i = 0;
+         i < NUM_COLORS*2;
+         ++i )
+        old_colors[ i ] = colors[ i ];
+        
+    TQPalette pal = TQApplication::palette();
+    // normal colors
+    colors[ColorFrame] = pal.active().background();
+    colors[ColorFrame] = config->readColorEntry("frame", &colors[ColorFrame]);
+    colors[ColorHandle] = colors[ColorFrame];
+    colors[ColorHandle] = config->readColorEntry("handle", &colors[ColorHandle]);
+
+    // full button configuration (background, blend, and foreground
+    if(TQPixmap::defaultDepth() > 8)
+        colors[ColorButtonBg] = colors[ColorFrame].light(130);
+    else
+        colors[ColorButtonBg] = colors[ColorFrame];
+    colors[ColorButtonBg] = config->readColorEntry("activeTitleBtnBg",
+                                              &colors[ColorFrame]);
+    colors[ColorTitleBar] = pal.active().highlight();
+    colors[ColorTitleBar] = config->readColorEntry("activeBackground",
+                                              &colors[ColorTitleBar]);
+    if(TQPixmap::defaultDepth() > 8)
+        colors[ColorTitleBlend] = colors[ ColorTitleBar ].dark(110);
+    else
+        colors[ColorTitleBlend] = colors[ ColorTitleBar ];
+    colors[ColorTitleBlend] = config->readColorEntry("activeBlend",
+                                                &colors[ColorTitleBlend]);
+
+    colors[ColorFont] = pal.active().highlightedText();
+    colors[ColorFont] = config->readColorEntry("activeForeground", &colors[ColorFont]);
+
+    // inactive
+    colors[ColorFrame+NUM_COLORS] = config->readColorEntry("inactiveFrame",
+                                                      &colors[ColorFrame]);
+    colors[ColorTitleBar+NUM_COLORS] = colors[ColorFrame];
+    colors[ColorTitleBar+NUM_COLORS] = config->
+        readColorEntry("inactiveBackground", &colors[ColorTitleBar+NUM_COLORS]);
+
+    if(TQPixmap::defaultDepth() > 8)
+        colors[ColorTitleBlend+NUM_COLORS] = colors[ ColorTitleBar+NUM_COLORS ].dark(110);
+    else
+        colors[ColorTitleBlend+NUM_COLORS] = colors[ ColorTitleBar+NUM_COLORS ];
+    colors[ColorTitleBlend+NUM_COLORS] =
+        config->readColorEntry("inactiveBlend", &colors[ColorTitleBlend+NUM_COLORS]);
+
+    // full button configuration
+    if(TQPixmap::defaultDepth() > 8)
+        colors[ColorButtonBg+NUM_COLORS] = colors[ColorFrame+NUM_COLORS].light(130);
+    else
+        colors[ColorButtonBg+NUM_COLORS] = colors[ColorFrame+NUM_COLORS];
+    colors[ColorButtonBg+NUM_COLORS] =
+        config->readColorEntry("inactiveTitleBtnBg",
+                               &colors[ColorButtonBg]);
+
+    colors[ColorHandle+NUM_COLORS] =
+        config->readColorEntry("inactiveHandle", &colors[ColorHandle]);
+
+    colors[ColorFont+NUM_COLORS] = colors[ColorFrame].dark();
+    colors[ColorFont+NUM_COLORS] = config->readColorEntry("inactiveForeground",
+                                                     &colors[ColorFont+NUM_COLORS]);
+
+    for( int i = 0;
+         i < NUM_COLORS*2;
+         ++i )
+        if( old_colors[ i ] != colors[ i ] )
+            changed |= SettingColors;
+
+// SettingFont
+    TQFont old_activeFont = activeFont;
+    TQFont old_inactiveFont = inactiveFont;
+    TQFont old_activeFontSmall = activeFontSmall;
+    TQFont old_inactiveFontSmall = inactiveFontSmall;
+
+    TQFont activeFontGuess = KGlobalSettings::windowTitleFont();
+
+    activeFont = config->readFontEntry("activeFont", &activeFontGuess);
+    inactiveFont = config->readFontEntry("inactiveFont", &activeFont);
+
+    activeFontSmall = activeFont;
+    activeFontSmall.setPointSize(activeFont.pointSize() - 2);
+    activeFontSmall = config->readFontEntry("activeFontSmall", &activeFontSmall);
+    inactiveFontSmall = config->readFontEntry("inactiveFontSmall", &activeFontSmall);
+
+    if( old_activeFont != activeFont
+        || old_inactiveFont != inactiveFont
+        || old_activeFontSmall != activeFontSmall
+        || old_inactiveFontSmall != inactiveFontSmall )
+        changed |= SettingFont;
+
+    config->setGroup( "Style" );
+// SettingsButtons        
+    TQString old_title_buttons_left = title_buttons_left;
+    TQString old_title_buttons_right = title_buttons_right;
+    bool old_custom_button_positions = custom_button_positions;
+    custom_button_positions = config->readBoolEntry("CustomButtonPositions", false);
+    if (custom_button_positions)
+        {
+        title_buttons_left  = config->readEntry("ButtonsOnLeft", "MS");
+        title_buttons_right = config->readEntry("ButtonsOnRight", "HIAX");
+        }
+    else
+        {
+        title_buttons_left  = "MS";
+        title_buttons_right = "HIAX";
+        }
+    if( old_custom_button_positions != custom_button_positions
+        || ( custom_button_positions &&
+                ( old_title_buttons_left != title_buttons_left
+                || old_title_buttons_right != title_buttons_right )))
+        changed |= SettingButtons;
+
+// SettingTooltips
+    bool old_show_tooltips = show_tooltips;
+    show_tooltips = config->readBoolEntry("ShowToolTips", true);
+    if( old_show_tooltips != show_tooltips )
+        changed |= SettingTooltips;
+
+// SettingBorder
+
+    BorderSize old_border_size = border_size;
+    int border_size_num = config->readNumEntry( "BorderSize", BorderNormal );
+    if( border_size_num >= 0 && border_size_num < BordersCount )
+        border_size = static_cast< BorderSize >( border_size_num );
+    else
+        border_size = BorderNormal;
+    if( old_border_size != border_size )
+        changed |= SettingBorder;
+    cached_border_size = BordersCount; // invalid
+
+    config->setGroup( "Windows" );
+    bool old_move_resize_maximized_windows = move_resize_maximized_windows;
+    move_resize_maximized_windows = config->readBoolEntry( "MoveResizeMaximizedWindows", false );
+    if( old_move_resize_maximized_windows != move_resize_maximized_windows )
+        changed |= SettingBorder;
+
+// destroy cached values
+    int i;
+    for(i=0; i < NUM_COLORS*2; ++i)
+        {
+        if(cg[i])
+            {
+            delete cg[i];
+            cg[i] = NULL;
+            }
+        }
+
+    config->setGroup( old_group );
+
+    return changed;
+    }
+
+KDecorationDefines::BorderSize KDecorationOptionsPrivate::findPreferredBorderSize( BorderSize size,
+    TQValueList< BorderSize > sizes ) const
+    {
+    for( TQValueList< BorderSize >::ConstIterator it = sizes.begin();
+         it != sizes.end();
+         ++it )
+        if( size <= *it ) // size is either a supported size, or *it is the closest larger supported
+            return *it;
+    return sizes.last(); // size is larger than all supported ones, return largest
+    }
diff --git a/twin/lib/kdecoration_p.h b/twin/lib/kdecoration_p.h
new file mode 100644
index 000000000..58f386c9b
--- /dev/null
+++ b/twin/lib/kdecoration_p.h
@@ -0,0 +1,111 @@
+/*****************************************************************
+This file is part of the KDE project.
+
+Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+******************************************************************/
+
+#ifndef KDECORATION_P_H
+#define KDECORATION_P_H
+
+//
+// This header file is internal. I mean it.
+// 
+
+#include "kdecoration.h"
+#include <tqwidget.h>
+#include <tqvaluelist.h>
+
+class KConfig;
+
+class KWIN_EXPORT KDecorationOptionsPrivate : public KDecorationDefines
+    {
+    public:
+        KDecorationOptionsPrivate();
+        virtual ~KDecorationOptionsPrivate();
+        void defaultKWinSettings(); // shared implementation
+        unsigned long updateKWinSettings( KConfig* ); // shared implementation
+        BorderSize findPreferredBorderSize( BorderSize size, TQValueList< BorderSize > ) const; // shared implementation
+
+        TQColor colors[NUM_COLORS*2];
+        TQColorGroup *cg[NUM_COLORS*2];
+        TQFont activeFont, inactiveFont, activeFontSmall, inactiveFontSmall;
+        TQString title_buttons_left;
+        TQString title_buttons_right;
+        bool custom_button_positions;
+        bool show_tooltips;
+        BorderSize border_size, cached_border_size;
+        bool move_resize_maximized_windows;
+        WindowOperation OpMaxButtonRightClick;
+        WindowOperation OpMaxButtonMiddleClick;
+        WindowOperation OpMaxButtonLeftClick;
+    };
+
+class KDecorationBridge : public KDecorationDefines
+    {
+    public:
+	virtual bool isActive() const = 0;
+	virtual bool isCloseable() const = 0;
+	virtual bool isMaximizable() const = 0;
+	virtual MaximizeMode maximizeMode() const = 0;
+	virtual bool isMinimizable() const = 0;
+        virtual bool providesContextHelp() const = 0;
+        virtual int desktop() const = 0;
+        virtual bool isModal() const = 0;
+        virtual bool isShadeable() const = 0;
+        virtual bool isShade() const = 0;
+        virtual bool isSetShade() const = 0;
+        virtual bool keepAbove() const = 0;
+        virtual bool keepBelow() const = 0;
+        virtual bool isMovable() const = 0;
+        virtual bool isResizable() const = 0;
+        virtual NET::WindowType windowType( unsigned long supported_types ) const = 0;
+	virtual TQIconSet icon() const = 0;
+	virtual TQString caption() const = 0;
+	virtual void processMousePressEvent( TQMouseEvent* ) = 0;
+	virtual void showWindowMenu( const TQRect &) = 0;
+	virtual void showWindowMenu( TQPoint ) = 0;
+	virtual void performWindowOperation( WindowOperation ) = 0;
+        virtual void setMask( const TQRegion&, int ) = 0;
+        virtual bool isPreview() const = 0;
+        virtual TQRect geometry() const = 0;
+        virtual TQRect iconGeometry() const = 0;
+        virtual TQRegion unobscuredRegion( const TQRegion& r ) const = 0;
+        virtual TQWidget* workspaceWidget() const = 0;
+        virtual WId windowId() const = 0;
+	virtual void closeWindow() = 0;
+	virtual void maximize( MaximizeMode mode ) = 0;
+	virtual void minimize() = 0;
+        virtual void showContextHelp() = 0;
+        virtual void setDesktop( int desktop ) = 0;
+        virtual void titlebarDblClickOperation() = 0;
+        virtual void titlebarMouseWheelOperation( int delta ) = 0;
+        virtual void setShade( bool set ) = 0;
+        virtual void setKeepAbove( bool ) = 0;
+        virtual void setKeepBelow( bool ) = 0;
+        // not part of public API
+        virtual int currentDesktop() const = 0;
+        virtual TQWidget* initialParentWidget() const = 0;
+        virtual Qt::WFlags initialWFlags() const = 0;
+        virtual void helperShowHide( bool ) = 0;
+        virtual void grabXServer( bool grab ) = 0;
+    };
+
+#endif
diff --git a/twin/lib/kdecoration_plugins_p.cpp b/twin/lib/kdecoration_plugins_p.cpp
new file mode 100644
index 000000000..a7b12ab85
--- /dev/null
+++ b/twin/lib/kdecoration_plugins_p.cpp
@@ -0,0 +1,199 @@
+/*****************************************************************
+This file is part of the KDE project.
+
+Copyright (C) 1999, 2000    Daniel M. Duley <mosfet@kde.org>
+Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+******************************************************************/
+
+#include "kdecoration_plugins_p.h"
+
+#include <kconfig.h>
+#include <kdebug.h>
+#include <klocale.h>
+#include <klibloader.h>
+#include <assert.h>
+
+#include <tqdir.h>
+#include <tqfile.h>
+
+#include "kdecorationfactory.h"
+
+KDecorationPlugins::KDecorationPlugins( KConfig* cfg )
+    :   create_ptr( NULL ),
+        library( NULL ),
+        fact( NULL ),
+        old_library( NULL ),
+        old_fact( NULL ),
+        pluginStr( "twin3_undefined " ),
+        config( cfg )
+    {
+    }
+
+KDecorationPlugins::~KDecorationPlugins()
+    {
+    if(library)
+        {
+        assert( fact != NULL );
+        delete fact;
+	library->unload();
+        }
+    if(old_library)
+        {
+        assert( old_fact != NULL );
+        delete old_fact;
+	old_library->unload();
+        }
+    }
+
+bool KDecorationPlugins::reset( unsigned long changed )
+    {
+    TQString oldPlugin = pluginStr;
+    config->reparseConfiguration();
+    bool ret = false;
+    if(( !loadPlugin( "" ) && library ) // "" = read the one in cfg file
+        || oldPlugin == pluginStr )
+        { // no new plugin loaded, reset the old one
+        assert( fact != NULL );
+        ret = fact->reset( changed );
+        }
+    return ret || oldPlugin != pluginStr;
+    }
+
+KDecorationFactory* KDecorationPlugins::factory()
+    {
+    return fact;
+    }
+
+// convenience
+KDecoration* KDecorationPlugins::createDecoration( KDecorationBridge* bridge )
+    {
+    if( fact != NULL )
+        return fact->createDecoration( bridge );
+    return NULL;
+    }
+    
+// returns true if plugin was loaded successfully
+bool KDecorationPlugins::loadPlugin( TQString nameStr )
+    {
+    if( nameStr.isEmpty())
+        {
+        KConfigGroupSaver saver( config, "Style" );
+        nameStr = config->readEntry("PluginLib", defaultPlugin );
+        }
+    // make sure people can switch between HEAD and twin_iii branch
+    if( nameStr.startsWith( "twin_" ))
+	nameStr = "twin3_" + nameStr.mid( 5 );
+
+    KLibrary *oldLibrary = library;
+    KDecorationFactory* oldFactory = fact;
+
+    TQString path = KLibLoader::findLibrary(TQFile::encodeName(nameStr));
+
+    // If the plugin was not found, try to find the default
+    if (path.isEmpty())
+        {
+        nameStr = defaultPlugin;
+        path = KLibLoader::findLibrary(TQFile::encodeName(nameStr));
+        }
+
+    // If no library was found, exit twin with an error message
+    if (path.isEmpty())
+        {
+        error( i18n("No window decoration plugin library was found." ));
+        return false;
+        }
+
+    // Check if this library is not already loaded.
+    if(pluginStr == nameStr)
+	return true;
+
+    // Try loading the requested plugin
+    library = KLibLoader::self()->library(TQFile::encodeName(path));
+
+    // If that fails, fall back to the default plugin
+    if (!library)
+        {
+	kdDebug() << " could not load library, try default plugin again" << endl;
+        nameStr = defaultPlugin;
+	if ( pluginStr == nameStr )
+	    return true;
+        path = KLibLoader::findLibrary(TQFile::encodeName(nameStr));
+	if (!path.isEmpty())
+            library = KLibLoader::self()->library(TQFile::encodeName(path));
+        }
+
+    if (!library)
+        {
+        error( i18n("The default decoration plugin is corrupt "
+                          "and could not be loaded." ));
+        return false;
+        }
+
+    create_ptr = NULL;
+    if( library->hasSymbol("create_factory"))
+        {
+        void* create_func = library->symbol("create_factory");
+        if(create_func)
+            create_ptr = (KDecorationFactory* (*)())create_func;
+        }
+    if(!create_ptr)
+        {
+        error( i18n( "The library %1 is not a KWin plugin." ).arg( path ));
+        library->unload();
+        return false;
+        }
+    fact = create_ptr();
+    fact->checkRequirements( this ); // let it check what is supported
+
+    pluginStr = nameStr;
+
+    // For clients in kdeartwork    
+    TQString catalogue = nameStr;
+    catalogue.replace( "twin3_", "twin_" );
+    KGlobal::locale()->insertCatalogue( catalogue );
+    // For KCommonDecoration based clients
+    KGlobal::locale()->insertCatalogue( "twin_lib" );
+    // For clients in kdebase
+    KGlobal::locale()->insertCatalogue( "twin_clients" );
+    // For clients in kdeartwork
+    KGlobal::locale()->insertCatalogue( "twin_art_clients" );
+
+    old_library = oldLibrary; // save for delayed destroying
+    old_fact = oldFactory;
+    
+    return true;
+}
+
+void KDecorationPlugins::destroyPreviousPlugin()
+{
+    // Destroy the old plugin
+    if(old_library)
+        {
+        delete old_fact;
+        old_fact = NULL;
+	old_library->unload();
+        old_library = NULL;
+        }
+}
+
+void KDecorationPlugins::error( const TQString& )
+    {
+    }
diff --git a/twin/lib/kdecoration_plugins_p.h b/twin/lib/kdecoration_plugins_p.h
new file mode 100644
index 000000000..81dbb6b68
--- /dev/null
+++ b/twin/lib/kdecoration_plugins_p.h
@@ -0,0 +1,77 @@
+/*****************************************************************
+This file is part of the KDE project.
+
+Copyright (C) 1999, 2000    Daniel M. Duley <mosfet@kde.org>
+Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+******************************************************************/
+
+#ifndef KDECORATION_PLUGINS_H
+#define KDECORATION_PLUGINS_H
+
+//
+// This header file is internal. I mean it.
+// 
+
+#include <tqcstring.h>
+#include <tqstring.h>
+#include <tqwidget.h>
+
+#include "kdecoration.h"
+
+class KLibrary;
+class KConfig;
+class KDecoration;
+class KDecorationBridge;
+class KDecorationFactory;
+
+class KWIN_EXPORT KDecorationPlugins
+    : public KDecorationProvides
+    {
+    public:
+        KDecorationPlugins( KConfig* cfg );
+        virtual ~KDecorationPlugins();
+        bool loadPlugin( TQString name );
+        void destroyPreviousPlugin();
+        KDecorationFactory* factory();
+        KDecoration* createDecoration( KDecorationBridge* );
+        TQString currentPlugin() { return pluginStr; }
+        bool reset( unsigned long changed ); // returns true if decorations need to be recreated
+    protected:
+        virtual void error( const TQString& error_msg );
+        TQCString defaultPlugin; // FRAME normalne protected?
+    private:
+        KDecorationFactory* (*create_ptr)();
+        KLibrary *library;
+        KDecorationFactory* fact;
+        KLibrary *old_library;
+        KDecorationFactory* old_fact;
+        TQString pluginStr;
+        KConfig* config;
+    };
+
+/*
+
+ Plugins API:
+    KDecorationFactory* create_factory(); - called once after loading
+
+*/
+
+#endif
diff --git a/twin/lib/kdecorationfactory.cpp b/twin/lib/kdecorationfactory.cpp
new file mode 100644
index 000000000..7ad1aefbe
--- /dev/null
+++ b/twin/lib/kdecorationfactory.cpp
@@ -0,0 +1,85 @@
+/*****************************************************************
+This file is part of the KDE project.
+
+Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+******************************************************************/
+
+#include "kdecorationfactory.h"
+
+#include <assert.h>
+
+#include "kdecoration_p.h"
+
+KDecorationFactory::KDecorationFactory()
+    {
+    }
+    
+KDecorationFactory::~KDecorationFactory()
+    {
+    assert( _decorations.count() == 0 );
+    }
+
+bool KDecorationFactory::reset( unsigned long )
+    {
+    return false;
+    }
+    
+bool KDecorationFactory::supports( Ability )
+    {
+    return false;
+    }
+
+void KDecorationFactory::checkRequirements( KDecorationProvides* )
+    {
+    }
+
+TQValueList< KDecorationDefines::BorderSize > KDecorationFactory::borderSizes() const
+    {
+    return TQValueList< BorderSize >() << BorderNormal;
+    }
+    
+bool KDecorationFactory::exists( const KDecoration* deco ) const
+    {
+    return _decorations.contains( const_cast< KDecoration* >( deco ));
+    }
+    
+void KDecorationFactory::addDecoration( KDecoration* deco )
+    {
+    _decorations.append( deco );
+    }
+    
+void KDecorationFactory::removeDecoration( KDecoration* deco )
+    {
+    _decorations.remove( deco );
+    }
+
+void KDecorationFactory::resetDecorations( unsigned long changed )
+    {
+    for( TQValueList< KDecoration* >::ConstIterator it = _decorations.begin();
+         it != _decorations.end();
+         ++it )
+        (*it)->reset( changed );
+    }
+
+NET::WindowType KDecorationFactory::windowType( unsigned long supported_types, KDecorationBridge* bridge ) const
+    {
+    return bridge->windowType( supported_types );
+    }
diff --git a/twin/lib/kdecorationfactory.h b/twin/lib/kdecorationfactory.h
new file mode 100644
index 000000000..fb560c492
--- /dev/null
+++ b/twin/lib/kdecorationfactory.h
@@ -0,0 +1,120 @@
+/*****************************************************************
+This file is part of the KDE project.
+
+Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+******************************************************************/
+
+#ifndef KDECORATIONFACTORY_H
+#define KDECORATIONFACTORY_H
+
+#include "kdecoration.h"
+
+class KDecoration;
+class KDecorationBridge;
+class KDecorationFactoryPrivate;
+
+class KWIN_EXPORT KDecorationFactory
+    : public KDecorationDefines
+    {
+    public:
+	/**
+	 * Constructor. Called after loading the decoration plugin. All global
+	 * initialization of the plugin should be done in the factory constructor.
+	 */
+        KDecorationFactory();
+	/**
+	 * Destructor. Called before unloading the decoration plugin. All global
+	 * cleanup of the plugin should be done in the factory destructor.
+	 */
+        virtual ~KDecorationFactory();
+	/**
+	 * This function must be reimplemented to create decoration objects.
+	 * The argument should be passed to the KDecoration constructor, the second
+	 * KDecoration argument should be this factory object.
+	 */
+        virtual KDecoration* createDecoration( KDecorationBridge* bridge ) = 0;
+	/**
+	 * This function is called when the configuration settings changed.
+	 * The argument specifies what has changed, using the SettingXXX masks.
+	 * It should be determined whether the decorations need to be completely
+	 * remade, in which case true should be returned, or whether only e.g.
+	 * a tqrepaint will be sufficient, in which case false should be returned,
+	 * and resetDecorations() can be called to reset all decoration objects.
+	 * Note that true should be returned only when really necessary.
+	 */
+        virtual bool reset( unsigned long changed ); // returns true if the decoration needs to be recreated
+
+        /**
+         * Reimplement this function if your decoration supports more border sizes than
+         * the default one (BorderNormal). The returned list must contain all supported
+         * sizes, ordered from the smallest to the largest one. By default, only
+         * BorderNormal is returned.
+         */        
+        virtual TQValueList< BorderSize > borderSizes() const;
+
+        virtual bool supports( Ability ability );
+        
+        virtual void checkRequirements( KDecorationProvides* provides );
+	/**
+	 * Returns the KDecorationOptions object, which is used to access
+	 * configuration settings for the decoration.
+	 */
+        const KDecorationOptions* options(); // convenience
+        /**
+         * Returns true if the given decoration object still exists. This is necessary
+         * e.g. when calling KDecoration::showWindowMenu(), which may cause the decoration
+         * to be destroyed. Note that this function is reliable only if called immediately
+         * after such actions.
+         */
+        bool exists( const KDecoration* deco ) const;
+        /**
+         * @internal
+         */
+        void addDecoration( KDecoration* );
+        /**
+         * @internal
+         */
+        void removeDecoration( KDecoration* );
+    protected:
+	/**
+	 * Convenience function that calls KDecoration::reset() for all decoration
+	 * objects.
+	 */
+        void resetDecorations( unsigned long changed ); // convenience
+        /**
+         * This function has the same functionality like KDecoration::windowType().
+         * It can be used in createDecoration() to return different KDecoration
+         * inherited classes depending on the window type, as at that time
+         * KDecoration::windowType() is not available yet. The additional argument
+         * is the one passed to createDecoration().
+         */
+        NET::WindowType windowType( unsigned long supported_types, KDecorationBridge* bridge ) const;
+    private:
+        TQValueList< KDecoration* > _decorations;
+        KDecorationFactoryPrivate* d;
+    };
+    
+inline const KDecorationOptions* KDecorationFactory::options()
+    {
+    return KDecoration::options();
+    }
+    
+#endif