Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 966 insertions, 0 deletions

diff --git a/kwin/lib/kcommondecoration.cpp b/kwin/lib/kcommondecoration.cpp
new file mode 100644
index 000000000..58a95b599
--- /dev/null
+++ b/kwin/lib/kcommondecoration.cpp
@@ -0,0 +1,966 @@
+/*
+  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 <qapplication.h>
+#include <qcursor.h>
+#include <qdatetime.h>
+#include <qlabel.h>
+#include <qtooltip.h>
+#include <qwidget.h>
+
+#include <kdebug.h>
+
+#include <kapplication.h>
+#include <kdecorationfactory.h>
+#include <klocale.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:
+            return 0;
+
+        case LM_ExplicitButtonSpacer:
+            return 5;
+
+        default:
+            return 0;
+    }
+}
+
+void KCommonDecoration::init()
+{
+    createMainWidget(WNoAutoErase);
+
+    // for flicker-free redraws
+    widget()->setBackgroundMode(NoBackground);
+
+    widget()->installEventFilter( this );
+
+    resetLayout();
+
+    connect(this, SIGNAL(keepAboveChanged(bool) ), SLOT(keepAboveChange(bool) ) );
+    connect(this, SIGNAL(keepBelowChanged(bool) ), SLOT(keepBelowChange(bool) ) );
+
+    updateCaption();
+}
+
+void KCommonDecoration::reset( unsigned long changed )
+{
+    if (changed & SettingButtons) {
+        resetLayout();
+        widget()->update();
+    }
+}
+
+QRegion KCommonDecoration::cornerShape(WindowCorner)
+{
+    return QRegion();
+}
+
+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
+{
+    QRect 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]) {
+            QSize newSize = QSize(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, ::qt_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) {
+        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, ::qt_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 QLabel(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;
+}
+
+void KCommonDecoration::addButtons(ButtonContainer &btnContainer, const QString& 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 (!m_button[MenuButton]){
+                      btn = createButton(MenuButton);
+                      if (!btn) break;
+                      btn->setTipText(i18n("Menu") );
+                      btn->setRealizeButtons(LeftButton|RightButton);
+                      connect(btn, SIGNAL(pressed()), SLOT(menuButtonPressed()));
+                      connect(btn, SIGNAL(released()), this, SLOT(menuButtonReleased()));
+
+                      m_button[MenuButton] = btn;
+                  }
+                  break;
+              case 'S': // OnAllDesktops button
+                  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, SIGNAL(clicked()), 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, SIGNAL(clicked()), 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, SIGNAL(clicked()), SLOT(minimize()));
+
+                      m_button[MinButton] = btn;
+                  }
+                  break;
+              case 'A': // Maximize button
+                  if ((!m_button[MaxButton]) && isMaximizable()){
+                      btn = createButton(MaxButton);
+                      if (!btn) break;
+                      btn->setRealizeButtons(LeftButton|MidButton|RightButton);
+                      const bool max = maximizeMode()==MaximizeFull;
+                      btn->setTipText(max?i18n("Restore"):i18n("Maximize") );
+                      btn->setToggleButton(true);
+                      btn->setOn( max );
+                      connect(btn, SIGNAL(clicked()), 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, SIGNAL(clicked()), 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, SIGNAL(clicked()), 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, SIGNAL(clicked()), 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, SIGNAL(clicked()), SLOT(slotShade()));
+
+                      m_button[ShadeButton] = btn;
+                  }
+                  break;
+              case '_': // Spacer item
+                  btnContainer.append(0);
+            }
+
+
+            if (btn) {
+                btn->setLeft(isLeft);
+                btn->setSize(QSize(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 QSize& s )
+{
+    widget()->resize( s );
+}
+
+QSize KCommonDecoration::minimumSize() 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 QSize(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 QTime* t = NULL;
+    static KCommonDecoration* lastClient = NULL;
+    if (t == NULL)
+        t = new QTime;
+    bool dbl = (lastClient==this && t->elapsed() <= QApplication::doubleClickInterval());
+    lastClient = this;
+    t->start();
+    if (!dbl || !decorationBehaviour(DB_MenuClose) ) {
+        QRect menuRect = m_button[MenuButton]->rect();
+        QPoint menutop = m_button[MenuButton]->mapToGlobal(menuRect.topLeft());
+        QPoint menubottom = m_button[MenuButton]->mapToGlobal(menuRect.bottomRight())+QPoint(0,2);
+        KDecorationFactory* f = factory();
+        showWindowMenu(QRect(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(QResizeEvent */*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 repaint...
+//     widget()->update();
+}
+
+void KCommonDecoration::moveWidget(int x, int y, QWidget *widget) const
+{
+    QPoint 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, QWidget *widget) const
+{
+    QSize s = widget->size();
+    int oldW = s.width();
+    int oldH = s.height();
+
+    if (w!=oldW || h!=oldH)
+        widget->resize(w,h);
+}
+
+void KCommonDecoration::mouseDoubleClickEvent(QMouseEvent *e)
+{
+    if( e->button() != 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(QWheelEvent *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 QPoint &point) const
+{
+    const int corner = 18+3*layoutMetric(LM_BorderBottom, false)/2;
+    Position pos = PositionCenter;
+
+    QRect 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
+
+    QDesktopWidget *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)
+    {
+        QRect fullscreen(desktop->screenGeometry(screen));
+        QRect 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;
+    }
+
+    QRegion 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( QObject* o, QEvent* e )
+{
+    if( o != widget())
+        return false;
+    switch( e->type())
+    {
+        case QEvent::Resize:
+            resizeEvent(static_cast<QResizeEvent*>(e) );
+            return true;
+        case QEvent::Paint:
+            paintEvent( static_cast< QPaintEvent* >( e ));
+            return true;
+        case QEvent::MouseButtonDblClick:
+            mouseDoubleClickEvent( static_cast< QMouseEvent* >( e ));
+            return true;
+        case QEvent::MouseButtonPress:
+            processMousePressEvent( static_cast< QMouseEvent* >( e ));
+            return true;
+        case QEvent::Wheel:
+            wheelEvent( static_cast< QWheelEvent* >( 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));
+}
+
+QRect KCommonDecoration::titleRect() const
+{
+    int r_x, r_y, r_x2, r_y2;
+    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 QRect(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)
+    : QButton(parent->widget(), name),
+        m_decoration(parent),
+        m_type(type),
+        m_realizeButtons(LeftButton),
+        m_lastMouse(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 QSize &s)
+{
+    if (!m_size.isValid() || s != size() ) {
+        m_size = s;
+
+        setFixedSize(m_size);
+        reset(SizeChange);
+    }
+}
+
+QSize KCommonDecorationButton::sizeHint() const
+{
+    return m_size;
+}
+
+void KCommonDecorationButton::setTipText(const QString &tip) {
+    QToolTip::remove(this );
+    QToolTip::add(this, tip );
+}
+
+void KCommonDecorationButton::setToggleButton(bool toggle)
+{
+    QButton::setToggleButton(toggle);
+    reset(ToggleChange);
+}
+
+void KCommonDecorationButton::setOn(bool on)
+{
+    if (on != isOn() ) {
+        QButton::setOn(on);
+        reset(StateChange);
+    }
+}
+
+void KCommonDecorationButton::mousePressEvent(QMouseEvent* e)
+{
+    m_lastMouse = e->button();
+    // pass on event after changing button to LeftButton
+    QMouseEvent me(e->type(), e->pos(), e->globalPos(),
+                   (e->button()&m_realizeButtons)?LeftButton:NoButton, e->state());
+
+    QButton::mousePressEvent(&me);
+}
+
+void KCommonDecorationButton::mouseReleaseEvent(QMouseEvent* e)
+{
+    m_lastMouse = e->button();
+    // pass on event after changing button to LeftButton
+    QMouseEvent me(e->type(), e->pos(), e->globalPos(),
+                   (e->button()&m_realizeButtons)?LeftButton:NoButton, e->state());
+
+    QButton::mouseReleaseEvent(&me);
+}