sample.cpp

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/*
                             This file is part of the Opie Project

                             Copyright (c)  2002 Trolltech AS <info@trolltech.com>
                             Copyright (c)  2002 Robert Griebl <sandman@handhelds.org>
              =.
            .=l.
           .>+-=
 _;:,     .>    :=|.         This program is free software; you can
.> <`_,   >  .   <=          redistribute it and/or  modify it under
:`=1 )Y*s>-.--   :           the terms of the GNU Library General Public
.="- .-=="i,     .._         License as published by the Free Software
 - .   .-<_>     .<>         Foundation; either version 2 of the License,
     ._= =}       :          or (at your option) any later version.
    .%`+i>       _;_.
    .i_,=:_.      -<s.       This program is distributed in the hope that
     +  .  -:.       =       it will be useful,  but WITHOUT ANY WARRANTY;
    : ..    .:,     . . .    without even the implied warranty of
    =_        +     =;=|`    MERCHANTABILITY or FITNESS FOR A
  _.=:.       :    :=>`:     PARTICULAR PURPOSE. See the GNU
..}^=.=       =       ;      Library General Public License for more
++=   -.     .`     .:       details.
:     =  ...= . :.=-
 -.   .:....=;==+<;          You should have received a copy of the GNU
  -_. . .   )=.  =           Library General Public License along with
    --        :-=`           this library; see the file COPYING.LIB.
                             If not, write to the Free Software Foundation,
                             Inc., 59 Temple Place - Suite 330,
                             Boston, MA 02111-1307, USA.
*/

#include <qvbox.h>
#include <qpopupmenu.h>
#include <qpainter.h>
#include <qmenubar.h>
#include <qcheckbox.h>
#include <qpushbutton.h>
#include <qscrollbar.h>
#include <qlayout.h>
#include <qwhatsthis.h>
#include <qpixmapcache.h>
#include <qtimer.h>
#include <qobjectlist.h>
#include <qcommonstyle.h>

#include "sample.h"


class SampleText : public QWidget
{
public:
    SampleText( const QString &t, bool h, QWidget *parent )
        : QWidget( parent ), hl(h), text(t)
    {
        if ( hl )
            setBackgroundMode( PaletteHighlight );
        else
            setBackgroundMode( PaletteBase );
    }

    QSize sizeHint() const
    {
        QFontMetrics fm(font());
        return QSize( fm.width(text)+10, fm.height()+4 );
    }

    void paintEvent( QPaintEvent * )
    {
        QPainter p(this);
        if ( hl )
            p.setPen( colorGroup().highlightedText() );
        else
            p.setPen( colorGroup().text() );
        p.drawText( rect(), AlignCenter, text );
    }

private:
    bool hl;
    QString text;
};


SampleWindow::SampleWindow( QWidget *parent ) : QWidget(parent), iface(0)
{
        init();
}

QSize SampleWindow::sizeHint() const
{
        return container->sizeHint() + QSize( 10, 35 );
}

void SampleWindow::setFont( const QFont &f )
{
        QWidget::setFont( f );
        popup->setFont( f );
        QTimer::singleShot ( 0, this, SLOT( fixGeometry()));    
}

static void setStyleRecursive ( QWidget *w, QStyle *s )
{
        w->setStyle( s );
        QObjectList *childObjects=(QObjectList*)w->children();
        if ( childObjects ) {
                QObject * o;
                for(o=childObjects->first();o!=0;o=childObjects->next()) {
                        if( o->isWidgetType() ) {
                                setStyleRecursive((QWidget *)o,s);
                        }
                }
        }
}
                                                    
                                                    
void SampleWindow::setStyle2 ( QStyle *sty, const QPalette &pal )
{
        typedef void (QStyle::*QDrawMenuBarItemImpl) (QPainter *, int, int, int, int, QMenuItem *, QColorGroup &, bool, bool);

        extern QDrawMenuBarItemImpl qt_set_draw_menu_bar_impl(QDrawMenuBarItemImpl);

        QPixmapCache::clear ( );
        QPalette p = pal; // ette ( );
        sty-> polish ( p );
        qt_set_draw_menu_bar_impl ( 0 );
        setStyleRecursive ( this, sty );
        setPalette ( p );
        QTimer::singleShot ( 0, this, SLOT( fixGeometry()));    
}


void SampleWindow::setDecoration( WindowDecorationInterface *i )
{
        iface = i;
        wd.rect = QRect( 0, 0, 150, 75 );
        wd.caption = tr("Sample");
        wd.palette = palette();
        wd.flags = WindowDecorationInterface::WindowData::Dialog |
                   WindowDecorationInterface::WindowData::Active;
        wd.reserved = 1;

        th = iface->metric(WindowDecorationInterface::TitleHeight, &wd);
        tb = iface->metric(WindowDecorationInterface::TopBorder, &wd);
        lb = iface->metric(WindowDecorationInterface::LeftBorder, &wd);
        rb = iface->metric(WindowDecorationInterface::RightBorder, &wd);
        bb = iface->metric(WindowDecorationInterface::BottomBorder, &wd);

        int yoff = th + tb;
        int xoff = lb;

        wd.rect.setX( 0 );
        wd.rect.setWidth( width() - lb - rb );
        wd.rect.setY( 0 );
        wd.rect.setHeight( height() - yoff - bb );

        container->setGeometry( xoff, yoff, wd.rect.width(), wd.rect.height() );
        setMinimumSize( container->sizeHint().width()+lb+rb,
                        container->sizeHint().height()+tb+th+bb );
}

void SampleWindow::paintEvent( QPaintEvent * )
{
        if ( !iface )
            return;

        QPainter p( this );

        p.translate( lb, th+tb );

        iface->drawArea(WindowDecorationInterface::Border, &p, &wd);
        iface->drawArea(WindowDecorationInterface::Title, &p, &wd);

        p.setPen(palette().active().color(QColorGroup::HighlightedText));
        QFont f( font() );
        f.setWeight( QFont::Bold );
        p.setFont(f);
        iface->drawArea(WindowDecorationInterface::TitleText, &p, &wd);

        QRect brect( 0, -th, iface->metric(WindowDecorationInterface::HelpWidth,&wd), th );
        iface->drawButton( WindowDecorationInterface::Help, &p, &wd,
            brect.x(), brect.y(), brect.width(), brect.height(), (QWSButton::State)0 );
        brect.moveBy( wd.rect.width() -
            iface->metric(WindowDecorationInterface::OKWidth,&wd) -
            iface->metric(WindowDecorationInterface::CloseWidth,&wd), 0 );
        iface->drawButton( WindowDecorationInterface::Close, &p, &wd,
            brect.x(), brect.y(), brect.width(), brect.height(), (QWSButton::State)0 );
        brect.moveBy( iface->metric(WindowDecorationInterface::CloseWidth,&wd), 0 );
        iface->drawButton( WindowDecorationInterface::OK, &p, &wd,
            brect.x(), brect.y(), brect.width(), brect.height(), (QWSButton::State)0 );
}

void SampleWindow::init()
{
        container = new QVBox( this );
        popup = new QPopupMenu( this );
        popup->insertItem( tr("Normal Item"), 1 );
        popup->insertItem( tr("Disabled Item"), 2 );
        popup->setItemEnabled(2, FALSE);
        QMenuBar *mb = new QMenuBar( container );
        mb->insertItem( tr("Menu"), popup );
        QHBox *hb = new QHBox( container );
        QWidget *w = new QWidget( hb );
        (void)new QScrollBar( 0, 0, 0, 0, 0, Vertical, hb );

        QGridLayout *gl = new QGridLayout( w, 2, 2, 4 );
        SampleText *l = new SampleText( tr("Normal Text"), FALSE, w );
        gl->addWidget( l, 0, 0 );

        l = new SampleText( tr("Highlighted Text"), TRUE, w );
        gl->addWidget( l, 1, 0 );

        QPushButton *pb = new QPushButton( tr("Button"), w );
        gl->addWidget( pb, 0, 1 );
        pb->setFocusPolicy( NoFocus );

        QCheckBox *cb = new QCheckBox( tr("Check Box"), w );
        gl->addWidget( cb, 1, 1 );
        cb->setFocusPolicy( NoFocus );
        cb->setChecked( TRUE );

        QWhatsThis::add( this, tr("Sample window using the selected settings.") );
}

bool SampleWindow::eventFilter( QObject *, QEvent *e )
{
        switch ( e->type() ) {
            case QEvent::MouseButtonPress:
            case QEvent::MouseButtonRelease:
            case QEvent::MouseButtonDblClick:
            case QEvent::MouseMove:
            case QEvent::KeyPress:
            case QEvent::KeyRelease:
                return TRUE;
            default:
                break;
        }

        return FALSE;
}

void SampleWindow::paletteChange( const QPalette &old )
{
        QWidget::paletteChange ( old );
        wd. palette = palette ( );
        popup-> setPalette ( palette ( ));
}


void SampleWindow::setPalette ( const QPalette &pal )
{
        QPixmapCache::clear ( );
        QPalette p = pal;
        style ( ). polish ( p );
        QWidget::setPalette ( p );
}

void SampleWindow::resizeEvent( QResizeEvent *re )
{
        wd.rect = QRect( 0, 0, 150, 75 );

        wd.rect.setX( 0 );
        wd.rect.setWidth( width() - lb - rb );
        wd.rect.setY( 0 );
        wd.rect.setHeight( height() - th - tb - bb );

        container->setGeometry( lb, th+tb, wd.rect.width(), wd.rect.height() );
        QWidget::resizeEvent( re );
}

void SampleWindow::fixGeometry()
{
        setMinimumSize( container->sizeHint().width()+lb+rb,
                        container->sizeHint().height()+tb+th+bb );
}

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