/*  This file is part of the KDE libraries
    Copyright (C) 1997 Martin Jones (mjones@kde.org)
    Copyright (C) 1999 Cristian Tibirna (ctibirna@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 as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    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., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.
*/

//#include <config.h>

#include <qpainter.h>
#include <qdrawutil.h>
#include <qapplication.h>
#include <qclipboard.h>
#include <qstyle.h>
//#include <kglobalsettings.h>
//#include <kstdaccel.h>
#include <qcolordialog.h>
#include "kcolorbutton.h"
#include "kcolordrag.h"

class KColorButton::KColorButtonPrivate
{
public:
    bool m_bdefaultColor;
    QColor m_defaultColor;
};

KColorButton::KColorButton( QWidget *parent, const char *name )
        : QPushButton( parent, name )
{
    d = new KColorButtonPrivate;
    d->m_bdefaultColor = false;
    d->m_defaultColor = QColor();
    setAcceptDrops( true);

    // 2000-10-15 (putzer): fixes broken keyboard usage
    connect (this, SIGNAL(clicked()), this, SLOT(chooseColor()));
}

KColorButton::KColorButton( const QColor &c, QWidget *parent,
                            const char *name )
        : QPushButton( parent, name ), col(c)
{
    d = new KColorButtonPrivate;
    d->m_bdefaultColor = false;
    d->m_defaultColor = QColor();
    setAcceptDrops( true);

    // 2000-10-15 (putzer): fixes broken keyboard usage
    connect (this, SIGNAL(clicked()), this, SLOT(chooseColor()));
}

KColorButton::KColorButton( const QColor &c, const QColor &defaultColor, QWidget *parent,
                            const char *name )
        : QPushButton( parent, name ), col(c)
{
    d = new KColorButtonPrivate;
    d->m_bdefaultColor = true;
    d->m_defaultColor = defaultColor;
    setAcceptDrops( true);

    // 2000-10-15 (putzer): fixes broken keyboard usage
    connect (this, SIGNAL(clicked()), this, SLOT(chooseColor()));
}

KColorButton::~KColorButton()
{
    delete d;
}

void KColorButton::setColor( const QColor &c )
{
    if ( col != c ) {
        col = c;
        repaint( false );
        emit changed( col );
    }
}

QColor KColorButton::defaultColor() const
{
    return d->m_defaultColor;
}

void KColorButton::setDefaultColor( const QColor &c )
{
    d->m_bdefaultColor = c.isValid();
    d->m_defaultColor = c;
}


void KColorButton::drawButtonLabel( QPainter *painter )
{
    int x, y, w, h;
    QRect r = style().subRect( QStyle::SR_PushButtonContents, this );
    r.rect(&x, &y, &w, &h);

    int margin = style().pixelMetric( QStyle::PM_ButtonMargin, this );
    x += margin;
    y += margin;
    w -= 2*margin;
    h -= 2*margin;

    if (isOn() || isDown()) {
        x += style().pixelMetric( QStyle::PM_ButtonShiftHorizontal, this );
        y += style().pixelMetric( QStyle::PM_ButtonShiftVertical, this );
    }

    QColor fillCol = isEnabled() ? col : backgroundColor();
    qDrawShadePanel( painter, x, y, w, h, colorGroup(), true, 1, NULL);
    if ( fillCol.isValid() )
        painter->fillRect( x+1, y+1, w-2, h-2, fillCol );

    if ( hasFocus() ) {
        QRect focusRect = style().subRect( QStyle::SR_PushButtonFocusRect, this );
        style().drawPrimitive( QStyle::PE_FocusRect, painter, focusRect, colorGroup() );
    }
}

QSize KColorButton::sizeHint() const
{
    return style().sizeFromContents(QStyle::CT_PushButton, this, QSize(40, 15)).
           expandedTo(QApplication::globalStrut());
}

void KColorButton::dragEnterEvent( QDragEnterEvent *event)
{
    event->accept( KColorDrag::canDecode( event) && isEnabled());
}

void KColorButton::dropEvent( QDropEvent *event)
{
    QColor c;
    if ( KColorDrag::decode( event, c)) {
        setColor(c);
    }
}

void KColorButton::keyPressEvent( QKeyEvent *e )
{
    /*  KKey key( e );

      if ( KStdAccel::copy().contains( key ) ) {
        QMimeSource* mime = new KColorDrag( color() );
        QApplication::clipboard()->setData( mime, QClipboard::Clipboard );
      }
      else if ( KStdAccel::paste().contains( key ) ) {
        QColor color;
        KColorDrag::decode( QApplication::clipboard()->data( QClipboard::Clipboard ), color );
        setColor( color );
      }
      else*/
    QPushButton::keyPressEvent( e );
}

void KColorButton::mousePressEvent( QMouseEvent *e)
{
    mPos = e->pos();
    QPushButton::mousePressEvent(e);
}

void KColorButton::mouseMoveEvent( QMouseEvent *e)
{
    if ( (e->state() & LeftButton) /*&&
    (e->pos()-mPos).manhattanLength() > KGlobalSettings::dndEventDelay() */) {
        // Drag color object
        KColorDrag *dg = new KColorDrag( color(), this);
        dg->dragCopy();
        setDown(false);
    }
}

void KColorButton::chooseColor()
{
    QColor c = color();
    if ( d->m_bdefaultColor ) {
        c = QColorDialog::getColor(d->m_defaultColor,this);
        if ( c.isValid() )
            setColor(c);

        /*
        if( QColorDialog::getColor( c, d->m_defaultColor, this ) != QDialog::Rejected ) {
            setColor( c );
        }
        */
    } else {
        c = QColorDialog::getColor(c,this);
        if ( c.isValid() )
            setColor(c);
        /*
        if( QColorDialog::getColor( c, this ) != QDialog::Rejected ) {
            setColor( c );
        }
        */
    }
}

void KColorButton::virtual_hook( int, void* )
{ /*BASE::virtual_hook( id, data );*/ }

//#include "moc_kcolorbutton.cpp"