karrowbutton.cpp

/* This file is part of the KDE libraries
     Copyright (C) 2001 Frerich Raabe <raabe@kde.org>
 
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License version 2 as published by the Free Software Foundation.
 
   This library 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., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
*/
 
#include "karrowbutton.h"
 
#include <tqstyle.h>
#include <tqpainter.h>
 
class KArrowButtonPrivate
{
    public:
        TQt::ArrowType arrow;
};
 
KArrowButton::KArrowButton(TQWidget *parent, TQt::ArrowType arrow,
        const char *name)
    : TQPushButton(parent, name)
{
    d = new KArrowButtonPrivate();
    d->arrow = arrow;
}
 
KArrowButton::~KArrowButton()
{
    delete d;
}
 
TQSize KArrowButton::sizeHint() const
{
    return TQSize( 12, 12 );
}
 
void KArrowButton::setArrowType(TQt::ArrowType a)
{
    if (d->arrow != a) {
        d->arrow = a;
        repaint();
    }
}
TQt::ArrowType KArrowButton::arrowType() const
{
    return d->arrow;
}
 
void KArrowButton::drawButton(TQPainter *p)
{
    const unsigned int arrowSize = 8;
    const unsigned int margin = 2;
    
        p->fillRect( rect(), colorGroup().brush( TQColorGroup::Background ) );
    style().drawPrimitive( TQStyle::PE_Panel, p, TQRect( 0, 0, width(), height() ),
                   colorGroup(), 
                   isDown() ? TQStyle::Style_Sunken : TQStyle::Style_Default,
                   TQStyleOption( 2, 0 ) );
 
    if (static_cast<unsigned int>(width()) < arrowSize + margin ||
        static_cast<unsigned int>(height()) < arrowSize + margin)
        return; // don't draw arrows if we are too small
 
    unsigned int x = 0, y = 0;
    if (d->arrow == DownArrow) {
        x = (width() - arrowSize) / 2;
        y = height() - (arrowSize + margin);
    } else if (d->arrow == UpArrow) {
        x = (width() - arrowSize) / 2;
        y = margin;
    } else if (d->arrow == RightArrow) {
        x = width() - (arrowSize + margin);
        y = (height() - arrowSize) / 2;
    } else { // arrowType == LeftArrow
        x = margin;
        y = (height() - arrowSize) / 2;
    }
 
    if (isDown()) {
        x++;
        y++;
    }
 
    TQStyle::PrimitiveElement e = TQStyle::PE_ArrowLeft;
    switch (d->arrow)
    {
        case TQt::LeftArrow: e = TQStyle::PE_ArrowLeft; break;
        case TQt::RightArrow: e = TQStyle::PE_ArrowRight; break;
        case TQt::UpArrow: e = TQStyle::PE_ArrowUp; break;
        case TQt::DownArrow: e = TQStyle::PE_ArrowDown; break;
    }
    int flags = TQStyle::Style_Enabled;
    if ( isDown() )
        flags |= TQStyle::Style_Down;
    style().drawPrimitive( e, p, TQRect( TQPoint( x, y ), TQSize( arrowSize, arrowSize ) ),
                   colorGroup(), flags );
}
 
void KArrowButton::virtual_hook( int, void* )
{ /*BASE::virtual_hook( id, data );*/ }
 
#include "karrowbutton.moc"