qpedecoration_qws.cpp

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/**********************************************************************
** Copyright (C) 2000-2002 Trolltech AS.  All rights reserved.
**
** This file is part of the Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#ifdef QWS
#define QTOPIA_INTERNAL_LANGLIST
#include <qapplication.h>
#include <qstyle.h>
#include <qwidget.h>
#include <qpainter.h>
#include <qtimer.h>
#include <qwhatsthis.h>
#include <qpopupmenu.h>
#include "qcopenvelope_qws.h"
#include "qpedecoration_qws.h"
#include <qdialog.h>
#include <qdrawutil.h>
#include <qgfx_qws.h>
#include "qpeapplication.h"
#include "resource.h"
#include "global.h"
#include "qlibrary.h"
#include "windowdecorationinterface.h"
#include <qpe/qlibrary.h>
#include <qfile.h>
#include <qsignal.h>

#include <stdlib.h>

extern Q_EXPORT QRect qt_maxWindowRect;

#define WHATSTHIS_MODE

#ifndef QT_NO_QWS_QPE_WM_STYLE

#ifndef QT_NO_IMAGEIO_XPM

/* XPM */
static const char * const qpe_close_xpm[] = {
"16 16 3 1",
"       c None",
".      c #FFFFFF",
"+      c #000000",
"                ",
"                ",
"      .....     ",
"    ..+++++..   ",
"   .+++++++++.  ",
"   .+..+++..+.  ",
"  .++...+...++. ",
"  .+++.....+++. ",
"  .++++...++++. ",
"  .+++.....+++. ",
"  .++...+...++. ",
"   .+..+++..+.  ",
"   .+++++++++.  ",
"    ..+++++..   ",
"      .....     ",
"                "};

/* XPM */
static const char * const qpe_accept_xpm[] = {
"16 16 3 1",
"       c None",
".      c #FFFFFF",
"+      c #000000",
"                ",
"                ",
"      .....     ",
"    ..+++++..   ",
"   .+++++++++.  ",
"   .+++++++++.  ",
"  .+++++++..++. ",
"  .++.+++...++. ",
"  .+...+...+++. ",
"  .+......++++. ",
"  .++....+++++. ",
"   .++..+++++.  ",
"   .+++++++++.  ",
"    ..+++++..   ",
"      .....     ",
"                "};

#endif // QT_NO_IMAGEIO_XPM

class DecorHackWidget : public QWidget
{
public:
    bool needsOk() {
        return (getWState() & WState_Reserved1 ) ||
                 (inherits("QDialog") && !inherits("QMessageBox")
                  && !inherits("QWizard") );
    }
};

static QImage scaleButton( const QImage &img, int height )
{
    //ML: We don't want to scale if the difference is less than 4 pixels to prevent blurring
    if ( img.height() != 0 && ::abs( img.height()-height ) > 4 ) {
        return img.smoothScale( img.width()*height/img.height(), height );
    } else {
        return img;
    }
}

class TLWidget : public QWidget
{
public:
    QWSManager *manager()
    {
        return topData()->qwsManager;
    }

    QTLWExtra *topExtra()
    {
        return topData();
    }

    void setWState( uint s ) { QWidget::setWState( s ); }
    void clearWState( uint s ) { QWidget::clearWState( s ); }
};


QPEManager::QPEManager( QPEDecoration *d, QObject *parent )
    : QObject( parent ), decoration( d ), helpState(0), inWhatsThis(FALSE)
{
    wtTimer = new QTimer( this );
    connect( wtTimer, SIGNAL(timeout()), this, SLOT(whatsThisTimeout()) );
}


void QPEManager::updateActive()
{
    QWidget *newActive = qApp->activeWindow();
    if ( newActive && (QWidget*)active == newActive )
        return;

    if ( active && (!newActive || ((TLWidget *)newActive)->manager()) ) {
        ((TLWidget *)(QWidget*)active)->manager()->removeEventFilter( this );
    }

    if ( newActive && ((TLWidget *)newActive)->manager() ) {
        active = newActive;
        ((TLWidget *)(QWidget*)active)->manager()->installEventFilter( this );
    } else if ( !newActive ) {
        active = 0;
    }
}

int QPEManager::pointInQpeRegion( QWidget *w, const QPoint &p )
{
    QRect rect(w->geometry());

    if ( decoration->region( w, rect,
                (QWSDecoration::Region)QPEDecoration::Help ).contains(p) )
        return QPEDecoration::Help;

    for (int i = QWSDecoration::LastRegion; i >= QWSDecoration::Title; i--) {
        if (decoration->region(w, rect, (QWSDecoration::Region)i).contains(p))
            return (QWSDecoration::Region)i;
    }

    return QWSDecoration::None;
}

bool QPEManager::eventFilter( QObject *o, QEvent *e )
{
    QWSManager *mgr = (QWSManager *)o;
    QWidget *w = mgr->widget();
    switch ( e->type() ) {
        case QEvent::MouseButtonPress:
            {
                pressTime = QTime::currentTime();
                QPoint p = ((QMouseEvent*)e)->globalPos();
                int inRegion = pointInQpeRegion( w, p );
#ifdef WHATSTHIS_MODE
                if ( !w->geometry().contains(p) && QWhatsThis::inWhatsThisMode() ) {
                    QString text;
                    switch ( inRegion ) {
                        case QWSDecoration::Close:
                            if ( ((DecorHackWidget*)w)->needsOk() )
                                text = tr("Click to close this window, discarding changes.");
                            else
                                text = tr("Click to close this window.");
                            break;
                        case QWSDecoration::Minimize:
                            text = tr("Click to close this window and apply changes.");
                            break;
                        case QWSDecoration::Maximize:
                            if ( w->isMaximized() )
                                text = tr("Click to make this window movable.");
                            else
                                text = tr("Click to make this window use all available screen area.");
                            break;
                        default:
                            break;
                    }
                    QWhatsThis::leaveWhatsThisMode( text );
                    whatsThisTimeout();
                    helpState = 0;
                    return true;
                }
#endif
                if ( inRegion == QPEDecoration::Help ) {
#ifdef WHATSTHIS_MODE
                    wtTimer->start( 400, TRUE );
#endif
                    helpState = QWSButton::Clicked|QWSButton::MouseOver;
                    drawButton( w, QPEDecoration::Help, helpState );
                    return true;
                }
            }
            break;
        case QEvent::MouseButtonRelease:
            if ( helpState & QWSButton::Clicked ) {
                wtTimer->stop();
                helpState = 0;
                drawButton( w, QPEDecoration::Help, helpState );
                QPoint p = ((QMouseEvent*)e)->globalPos();
                if ( pointInQpeRegion( w, p ) == QPEDecoration::Help ) {
                    decoration->help( w );
                }
                return true;
            }
            break;
        case QEvent::MouseMove:
            if ( helpState & QWSButton::Clicked ) {
                int oldState = helpState;
                QPoint p = ((QMouseEvent*)e)->globalPos();
                if ( pointInQpeRegion( w, p ) == QPEDecoration::Help ) {
                    helpState = QWSButton::Clicked|QWSButton::MouseOver;
                } else {
                    helpState = 0;
                }
                if ( helpState != oldState )
                    drawButton( w, QPEDecoration::Help, helpState );
            }
            break;
        default:
            break;
    }
    return QObject::eventFilter( o, e );
}

void QPEManager::drawButton( QWidget *w, QPEDecoration::QPERegion r, int state )
{
    QPainter painter(w);
    QRegion rgn = ((TLWidget *)w)->topExtra()->decor_allocated_region;
    painter.internalGfx()->setWidgetDeviceRegion( rgn );
    painter.setClipRegion(decoration->region(w, w->rect(),QWSDecoration::All));
    decoration->paintButton( &painter, w, (QWSDecoration::Region)r, state );
}

void QPEManager::drawTitle( QWidget *w )
{
    QPainter painter(w);
    QRegion rgn = ((TLWidget *)w)->topExtra()->decor_allocated_region;
    painter.internalGfx()->setWidgetDeviceRegion( rgn );
    painter.setClipRegion(decoration->region(w, w->rect(),QWSDecoration::All));
    decoration->paint( &painter, w );
    decoration->paintButton(&painter, w, QWSDecoration::Menu, 0);
    decoration->paintButton(&painter, w, QWSDecoration::Close, 0);
    decoration->paintButton(&painter, w, QWSDecoration::Minimize, 0);
    decoration->paintButton(&painter, w, QWSDecoration::Maximize, 0);
}

void QPEManager::whatsThisTimeout()
{
    if ( !QWhatsThis::inWhatsThisMode() ) {
        if ( inWhatsThis ) {
            if ( whatsThis ) {
                QWidget *w = whatsThis;
                whatsThis = 0;
                drawTitle( w );
            }
            wtTimer->stop();
        } else {
            QWhatsThis::enterWhatsThisMode();
            helpState = 0;
            updateActive();
            if ( active ) {
                whatsThis = active;
                drawTitle( active );
                // check periodically to see if we've left whats this mode
                wtTimer->start( 250 );
            }
        }
        inWhatsThis = !inWhatsThis;
    }
}

//===========================================================================
#define IMAGE_METHOD( methodName, imageName )                             \
static QImage* methodName( int th ) {                                     \
    static QImage *i = 0;                                                 \
     if ( !i || ::abs( i->height()-th ) > 4 ) {                           \
         delete i;                                                        \
         i = new QImage(scaleButton(Resource::loadImage(#imageName),th)); \
     }                                                                    \
                                                                          \
     return i;                                                            \
}

IMAGE_METHOD(okImage,      OKButton       );
IMAGE_METHOD(closeImage,   CloseButton    );
IMAGE_METHOD(helpImage,    HelpButton     );
IMAGE_METHOD(maximizeImage,MaximizeButton );

int WindowDecorationInterface::metric( Metric m, const WindowData *wd ) const
{
    switch ( m ) {
        case TitleHeight:
            if ( QApplication::desktop()->height() > 320 )
                return 19;
            else
                return 15;
        case LeftBorder:
        case RightBorder:
        case TopBorder:
        case BottomBorder:
            return 4;
        case OKWidth:
            return okImage(metric(TitleHeight,wd))->width();
        case CloseWidth:
            return closeImage(metric(TitleHeight,wd))->width();
        case HelpWidth:
            return helpImage(metric(TitleHeight,wd))->width();
        case MaximizeWidth:
            return maximizeImage(metric(TitleHeight,wd))->width();
        case CornerGrabSize:
            return 16;
    }

    return 0;
}

void WindowDecorationInterface::drawArea( Area a, QPainter *p, const WindowData *wd ) const
{
    int th = metric( TitleHeight, wd );
    QRect r = wd->rect;

    switch ( a ) {
        case Border:
            {
                const QColorGroup &cg = wd->palette.active();
                qDrawWinPanel(p, r.x()-metric(LeftBorder,wd),
                        r.y()-th-metric(TopBorder,wd),
                        r.width()+metric(LeftBorder,wd)+metric(RightBorder,wd),
                        r.height()+th+metric(TopBorder,wd)+metric(BottomBorder,wd),
                        cg, FALSE, &cg.brush(QColorGroup::Background));
            }
            break;
        case Title:
            {
                const QColorGroup &cg = wd->palette.active();
                QBrush titleBrush;
                QPen   titleLines;

                if ( wd->flags & WindowData::Active ) {
                    titleBrush = cg.brush(QColorGroup::Highlight);
                    titleLines = titleBrush.color().dark();
                } else {
                    titleBrush = cg.brush(QColorGroup::Background);
                    titleLines = titleBrush.color();
                }

                p->fillRect( r.x(), r.y()-th, r.width(), th, titleBrush);

                p->setPen( titleLines );
                for ( int i = r.y()-th; i < r.y(); i += 2 )
                    p->drawLine( r.left(), i, r.right(), i );
            }
            break;
        case TitleText:
            p->drawText( r.x()+3+metric(HelpWidth,wd), r.top()-th,
                r.width()-metric(OKWidth,wd)-metric(CloseWidth,wd),
                th, QPainter::AlignVCenter, wd->caption);
            break;
    }
}

void WindowDecorationInterface::drawButton( Button b, QPainter *p, const WindowData *wd, int x, int y, int, int, QWSButton::State state ) const
{
    QImage *img = 0;
    switch ( b ) {
        case OK:
            img = okImage(metric(TitleHeight,wd));
            break;
        case Close:
            img = closeImage(metric(TitleHeight,wd));
            break;
        case Help:
            img = helpImage(metric(TitleHeight,wd));
            break;
        case Maximize:
            img = maximizeImage(metric(TitleHeight,wd));
            break;
    }

    if ( img ) {
        if ((state & QWSButton::MouseOver) && (state & QWSButton::Clicked))
            p->drawImage(x+2, y+2, *img);
        else
            p->drawImage(x+1, y+1, *img);
    }
}

QRegion WindowDecorationInterface::mask( const WindowData *wd ) const
{
    int th = metric(TitleHeight,wd);
    QRect rect( wd->rect );
    QRect r(rect.left() - metric(LeftBorder,wd),
            rect.top() - th - metric(TopBorder,wd),
            rect.width() + metric(LeftBorder,wd) + metric(RightBorder,wd),
            rect.height() + th + metric(TopBorder,wd) + metric(BottomBorder,wd));
    return QRegion(r) - rect;
}

class DefaultWindowDecoration : public WindowDecorationInterface
{
public:
    DefaultWindowDecoration(){}
    QString name() const {
        return qApp->translate("WindowDecoration", "Default",
                "List box text for default window decoration");
    }
    QPixmap icon() const {
        return QPixmap();
    }
    QRESULT queryInterface( const QUuid &uuid, QUnknownInterface **iface ) {
        *iface = 0;
        if ( uuid == IID_QUnknown )
            *iface = this;
        else if ( uuid == IID_WindowDecoration )
            *iface = this;
        else
            return QS_FALSE;

        if ( *iface )
            (*iface)->addRef();
        return QS_OK;
    }
    Q_REFCOUNT

};

static WindowDecorationInterface *wdiface = 0;
static QLibrary* wdlib = 0;
static QString libname;

//===========================================================================
bool QPEDecoration::helpExists() const
{
    if ( helpFile.isNull() ) {
        QStringList helpPath = Global::helpPath();
        QString hf = QString(qApp->argv()[0]) + ".html";
        bool he = FALSE;
        for (QStringList::ConstIterator it=helpPath.begin(); it!=helpPath.end() && !he; ++it)
            he = QFile::exists( *it + "/" + hf );
        ((QPEDecoration*)this)->helpFile = hf;
        ((QPEDecoration*)this)->helpexists = he;
        return he;
    }
    return helpexists;
}

QPEDecoration::QPEDecoration()
    : QWSDefaultDecoration()
{
    if ( wdlib ) {
        delete wdlib;
        wdlib = 0;
    } else {
        delete wdiface;
    }
    wdiface = new DefaultWindowDecoration;

    helpexists = FALSE; // We don't know (flagged by helpFile being null)
    qpeManager = new QPEManager( this );
    imageOk = Resource::loadImage( "OKButton" );
    imageClose = Resource::loadImage( "CloseButton" );
    imageHelp = Resource::loadImage( "HelpButton" );
}

QPEDecoration::QPEDecoration( const QString &plugin )
    : QWSDefaultDecoration()
{
    libname = plugin;

    if ( wdlib ) {
        wdiface->release();
        wdlib->unload();
        delete wdlib;
        wdlib = 0;
    } else {
        delete wdiface;
    }

    WindowDecorationInterface *iface = 0;
    QString path = QPEApplication::qpeDir() + "plugins/decorations/";

#ifdef Q_OS_MACX
    if ( plugin.find( ".dylib" ) > 0 ) {
#else
    if ( plugin.find( ".so" ) > 0 ) {
#endif
        // full library name supplied
        path += plugin;
    } else {
#ifdef Q_OS_MACX
        path += "lib" + plugin.lower() + ".dylib"; // compatibility
#else
        path += "lib" + plugin.lower() + ".so"; // compatibility
#endif
    }

    QLibrary *lib = new QLibrary( path );
    if ( lib->queryInterface( IID_WindowDecoration, (QUnknownInterface**)&iface ) == QS_OK && iface ) {
        wdiface = iface;
        wdlib = lib;
    } else {
        delete lib;
        wdiface = new DefaultWindowDecoration;
    }



    helpexists = FALSE; // We don't know (flagged by helpFile being null)
    qpeManager = new QPEManager( this );
}

QPEDecoration::~QPEDecoration()
{
    delete qpeManager;
}

const char **QPEDecoration::menuPixmap()
{
    return (const char **)0;
}

const char **QPEDecoration::closePixmap()
{
    return (const char **)qpe_close_xpm;
}

const char **QPEDecoration::minimizePixmap()
{
    return (const char **)qpe_accept_xpm;
}

const char **QPEDecoration::maximizePixmap()
{
    return (const char **)0;
}

const char **QPEDecoration::normalizePixmap()
{
    return (const char **)0;
}

int QPEDecoration::getTitleHeight( const QWidget *w )
{
    WindowDecorationInterface::WindowData wd;
    windowData( w, wd );
    return wdiface->metric(WindowDecorationInterface::TitleHeight,&wd);
}

/*
    If rect is empty, no frame is added. (a hack, really)
*/
QRegion QPEDecoration::region(const QWidget *widget, const QRect &rect, QWSDecoration::Region type)
{
    qpeManager->updateActive();

    WindowDecorationInterface::WindowData wd;
    windowData( widget, wd );
    wd.rect = rect;

    int titleHeight = wdiface->metric(WindowDecorationInterface::TitleHeight,&wd);
    int okWidth = wdiface->metric(WindowDecorationInterface::OKWidth,&wd);
    int closeWidth = wdiface->metric(WindowDecorationInterface::CloseWidth,&wd);
    int helpWidth = wdiface->metric(WindowDecorationInterface::HelpWidth,&wd);
    int grab = wdiface->metric(WindowDecorationInterface::CornerGrabSize,&wd);

    QRegion region;

    switch ((int)type) {
        case Menu:
            break;
        case Maximize:
            if ( !widget->inherits( "QDialog" ) && qApp->desktop()->width() > 350 ) {
                int maximizeWidth = wdiface->metric(WindowDecorationInterface::MaximizeWidth,&wd);
                int left = rect.right() - maximizeWidth - closeWidth;
                if ( ((DecorHackWidget *)widget)->needsOk() )
                    left -= okWidth;
                QRect r(left, rect.top() - titleHeight, closeWidth, titleHeight);
                region = r;
            }
            break;
        case Minimize:
            if ( ((DecorHackWidget *)widget)->needsOk() ) {
                QRect r(rect.right() - okWidth,
                    rect.top() - titleHeight, okWidth, titleHeight);
                if (r.left() > rect.left() + titleHeight)
                    region = r;
            }
            break;
        case Close:
            {
                int left = rect.right() - closeWidth;
                if ( ((DecorHackWidget *)widget)->needsOk() )
                    left -= okWidth;
                QRect r(left, rect.top() - titleHeight, closeWidth, titleHeight);
                region = r;
            }
            break;
        case Title:
            if ( !widget->isMaximized() ) {
                int width = rect.width() - helpWidth - closeWidth;
                if ( ((DecorHackWidget *)widget)->needsOk() )
                    width -= okWidth;
                QRect r(rect.left()+helpWidth, rect.top() - titleHeight,
                        width, titleHeight);
                if (r.width() > 0)
                    region = r;
            }
            break;
        case Help:
            if ( helpExists() || widget->testWFlags(Qt::WStyle_ContextHelp) ) {
                QRect r(rect.left(), rect.top() - titleHeight,
                          helpWidth, titleHeight);
                region = r;
            }
            break;
        case Top:
            if ( !widget->isMaximized() ) {
                QRegion m = wdiface->mask(&wd);
                QRect br = m.boundingRect();
                int b = wdiface->metric(WindowDecorationInterface::TopBorder,&wd);
                region = m & QRect( br.left()+grab, br.top(),
                                    br.width()-2*grab, b );
            }
            break;
        case Left:
            if ( !widget->isMaximized() ) {
                QRegion m = wdiface->mask(&wd);
                QRect br = m.boundingRect();
                int b = wdiface->metric(WindowDecorationInterface::LeftBorder,&wd);
                region = m & QRect( br.left(), br.top()+grab,
                                    b, br.height()-2*grab );
            }
            break;
        case Right:
            if ( !widget->isMaximized() ) {
                QRegion m = wdiface->mask(&wd);
                QRect br = m.boundingRect();
                int b = wdiface->metric(WindowDecorationInterface::RightBorder,&wd);
                region = m & QRect( rect.right(), br.top()+grab,
                                    b, br.height()-2*grab );
            }
            break;
        case Bottom:
            if ( !widget->isMaximized() ) {
                QRegion m = wdiface->mask(&wd);
                QRect br = m.boundingRect();
                int b = wdiface->metric(WindowDecorationInterface::BottomBorder,&wd);
                region = m & QRect( br.left()+grab, rect.bottom(),
                                    br.width()-2*grab, b );
            }
            break;
        case TopLeft:
            if ( !widget->isMaximized() ) {
                QRegion m = wdiface->mask(&wd);
                QRect br = m.boundingRect();
                int tb = wdiface->metric(WindowDecorationInterface::TopBorder,&wd);
                int lb = wdiface->metric(WindowDecorationInterface::LeftBorder,&wd);
                QRegion crgn( br.left(), br.top(), grab, tb );
                crgn |= QRect( br.left(), br.top(), lb, grab );
                region = m & crgn;
            }
            break;
        case TopRight:
            if ( !widget->isMaximized() ) {
                QRegion m = wdiface->mask(&wd);
                QRect br = m.boundingRect();
                int tb = wdiface->metric(WindowDecorationInterface::TopBorder,&wd);
                int rb = wdiface->metric(WindowDecorationInterface::RightBorder,&wd);
                QRegion crgn( br.right()-grab, br.top(), grab, tb );
                crgn |= QRect( br.right()-rb, br.top(), rb, grab );
                region = m & crgn;
            }
            break;
        case BottomLeft:
            if ( !widget->isMaximized() ) {
                QRegion m = wdiface->mask(&wd);
                QRect br = m.boundingRect();
                region = m & QRect( br.left(), br.bottom()-grab, grab, grab );
            }
            break;
        case BottomRight:
            if ( !widget->isMaximized() ) {
                QRegion m = wdiface->mask(&wd);
                QRect br = m.boundingRect();
                region = m & QRect( br.right()-grab, br.bottom()-grab, grab, grab );
            }
            break;
        case All:
            if ( widget->isMaximized() )
                region = QWSDefaultDecoration::region(widget, rect, type);
            else
                region = wdiface->mask(&wd) - rect;
            break;
        default:
            region = QWSDefaultDecoration::region(widget, rect, type);
            break;
    }

    return region;
}

void QPEDecoration::paint(QPainter *painter, const QWidget *widget)
{
    WindowDecorationInterface::WindowData wd;
    windowData( widget, wd );

    int titleWidth = getTitleWidth(widget);
    int titleHeight = wdiface->metric(WindowDecorationInterface::TitleHeight,&wd);

    QRect rect(widget->rect());

    // title bar rect
    QRect tbr( rect.left(), rect.top() - titleHeight, rect.width(), titleHeight );

#ifndef QT_NO_PALETTE
    QRegion oldClip = painter->clipRegion();
    painter->setClipRegion( oldClip - QRegion( tbr ) ); // reduce flicker
    wdiface->drawArea( WindowDecorationInterface::Border, painter, &wd );
    painter->setClipRegion( oldClip );

    if (titleWidth > 0) {
        const QColorGroup &cg = widget->palette().active();
        QBrush titleBrush;
        QPen   titlePen;

        if ( wd.flags & WindowDecorationInterface::WindowData::Active ) {
            titleBrush = cg.brush(QColorGroup::Highlight);
            titlePen   = cg.color(QColorGroup::HighlightedText);
        } else {
            titleBrush = cg.brush(QColorGroup::Background);
            titlePen   = cg.color(QColorGroup::Text);
        }

        wdiface->drawArea( WindowDecorationInterface::Title, painter, &wd );

        // Draw caption
        painter->setPen(titlePen);
        QFont f( QApplication::font() );
        f.setWeight( QFont::Bold );
        painter->setFont(f);
        wdiface->drawArea( WindowDecorationInterface::TitleText, painter, &wd );
    }
#endif //QT_NO_PALETTE

    paintButton( painter, widget, (QWSDecoration::Region)Help, 0 );
}

void QPEDecoration::paintButton(QPainter *painter, const QWidget *w,
                        QWSDecoration::Region type, int state)
{
    WindowDecorationInterface::Button b;
    switch ((int)type) {
        case Close:
            b = WindowDecorationInterface::Close;
            break;
        case Minimize:
            if ( ((DecorHackWidget *)w)->needsOk() )
                b = WindowDecorationInterface::OK;
            else if ( helpExists() )
                b = WindowDecorationInterface::Help;
            else
                return;
            break;
        case Help:
            b = WindowDecorationInterface::Help;
            break;
        case Maximize:
            b = WindowDecorationInterface::Maximize;
            break;
        default:
            return;
    }

    WindowDecorationInterface::WindowData wd;
    windowData( w, wd );

    int titleHeight = wdiface->metric(WindowDecorationInterface::TitleHeight,&wd);
    QRect rect(w->rect());
    QRect tbr( rect.left(), rect.top() - titleHeight, rect.width(), titleHeight );
    QRect brect(region(w, w->rect(), type).boundingRect());

    const QColorGroup &cg = w->palette().active();
    if ( wd.flags & WindowDecorationInterface::WindowData::Active )
        painter->setPen( cg.color(QColorGroup::HighlightedText) );
    else
        painter->setPen( cg.color(QColorGroup::Text) );

    QRegion oldClip = painter->clipRegion();
    painter->setClipRegion( QRect(brect.x(), tbr.y(), brect.width(), tbr.height()) ); // reduce flicker
    wdiface->drawArea( WindowDecorationInterface::Title, painter, &wd );
    wdiface->drawButton( b, painter, &wd, brect.x(), brect.y(), brect.width(), brect.height(), (QWSButton::State)state );
    painter->setClipRegion( oldClip );
}

//#define QPE_DONT_SHOW_TITLEBAR

void QPEDecoration::maximize( QWidget *widget )
{
#ifdef QPE_DONT_SHOW_TITLEBAR
    if ( !widget->inherits( "QDialog" ) ) {
        widget->setGeometry( qt_maxWindowRect );
    } else
#endif
        {
        QWSDecoration::maximize( widget );
    }
}

QPopupMenu *QPEDecoration::menu( const QWidget *, const QPoint & )
{
    QPopupMenu *m = new QPopupMenu();

    m->insertItem(QPEManager::tr("Restore"), (int)Normalize);
    m->insertItem(QPEManager::tr("Move"), (int)Title);
    m->insertItem(QPEManager::tr("Size"), (int)BottomRight);
    m->insertItem(QPEManager::tr("Maximize"), (int)Maximize);
    m->insertSeparator();
    m->insertItem(QPEManager::tr("Close"), (int)Close);

    return m;
}

#ifndef QT_NO_DIALOG
class HackDialog : public QDialog
{
public:
    void acceptIt() {
        if ( isA( "QMessageBox" ) )
            qApp->postEvent( this, new QKeyEvent( QEvent::KeyPress, Key_Enter, '\n', 0, "\n" ) );
        else
            accept();
    }
};
#endif


void QPEDecoration::minimize( QWidget *widget )
{
#ifndef QT_NO_DIALOG
    // We use the minimize button as an "accept" button.
    if ( widget->inherits( "QDialog" ) ) {
        HackDialog *d = (HackDialog *)widget;
        d->acceptIt();
    }
#endif
    else if ( ((DecorHackWidget *)widget)->needsOk() ) {
        QSignal s;
        s.connect( widget, SLOT( accept() ) );
        s.activate();
    } else {
        help( widget );
    }
}

void QPEDecoration::help( QWidget *w )
{
    if ( helpExists() ) {
        QString hf = helpFile;
        QString localHelpFile = QString(qApp->argv()[0]) + "-" + w->name() + ".html";
        QStringList helpPath = Global::helpPath();
        for (QStringList::ConstIterator it=helpPath.begin(); it!=helpPath.end(); ++it) {
            if ( QFile::exists( *it + "/" + localHelpFile ) ) {
                hf = localHelpFile;
                break;
            }
        }
        Global::execute( "helpbrowser", hf );
    } else if ( w && w->testWFlags(Qt::WStyle_ContextHelp) ) {
        QWhatsThis::enterWhatsThisMode();
        QWhatsThis::leaveWhatsThisMode( QObject::tr(
            "<Qt>Comprehensive help is not available for this application, "
            "however there is context-sensitive help.<p>To use context-sensitive help:<p>"
            "<ol><li>click and hold the help button."
            "<li>when the title bar shows <b>What's this...</b>, "
            "click on any control.</ol></Qt>" ) );
    }
}

void QPEDecoration::windowData( const QWidget *w, WindowDecorationInterface::WindowData &wd ) const
{
    wd.rect = w->rect();
    if ( qpeManager->whatsThisWidget() == w )
        wd.caption = QObject::tr( "What's this..." );
    else
        wd.caption = w->caption();
    wd.palette = qApp->palette();
    wd.flags = 0;
    wd.flags |= w->isMaximized() ? WindowDecorationInterface::WindowData::Maximized : 0;
    wd.flags |= w->testWFlags(Qt::WStyle_Dialog) ? WindowDecorationInterface::WindowData::Dialog : 0;
    const QWidget *active = qpeManager->activeWidget();
    wd.flags |= w == active ? WindowDecorationInterface::WindowData::Active : 0;
    wd.reserved = 1;
}

/*
#ifndef QT_NO_POPUPMENU
QPopupMenu *QPEDecoration::menu(QWSManager*, const QWidget*, const QPoint&)
{
    return 0;
}
#endif
*/




#endif // QT_NO_QWS_QPE_WM_STYLE
#endif

---