kcolordrag.cpp
/* This file is part of the KDE libraries
Copyright (C) 1999 Steffen Hansen (hansen@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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <qpainter.h>
#include "kcolordrag.h"
static const char * const color_mime_string = "application/x-color";
static const char * const text_mime_string = "text/plain";
KColorDrag::KColorDrag( const QColor &color, QWidget *dragsource,
const char *name)
: QStoredDrag( color_mime_string, dragsource, name)
{
setColor( color);
}
KColorDrag::KColorDrag( QWidget *dragsource, const char *name)
: QStoredDrag( color_mime_string, dragsource, name)
{
setColor( white );
}
void
KColorDrag::setColor( const QColor &color)
{
QColorDrag tmp(color, 0, 0);
setEncodedData(tmp.encodedData(color_mime_string));
QPixmap colorpix( 25, 20);
colorpix.fill( color);
QPainter p( &colorpix );
p.setPen( black );
p.drawRect(0,0,25,20);
p.end();
setPixmap(colorpix, QPoint(-5,-7));
}
const char *KColorDrag::format(int i) const
{
if (i==1)
return text_mime_string;
else
return QStoredDrag::format(i);
}
QByteArray KColorDrag::encodedData ( const char * m ) const
{
if (!qstrcmp(m, text_mime_string) )
{
QColor color;
QColorDrag::decode(const_cast<KColorDrag *>(this), color);
QCString result = color.name().latin1();
((QByteArray&)result).resize(result.length());
return result;
}
return QStoredDrag::encodedData(m);
}
bool
KColorDrag::canDecode( QMimeSource *e)
{
if (e->provides(color_mime_string))
return true;
if (e->provides(text_mime_string))
{
QColor dummy;
return decode(e, dummy);
}
return false;
}
bool
KColorDrag::decode( QMimeSource *e, QColor &color)
{
if (QColorDrag::decode(e, color))
return true;
QByteArray data = e->encodedData( text_mime_string);
QString colorName = QString::fromLatin1(data.data(), data.size());
if ((colorName.length() < 4) || (colorName[0] != '#'))
return false;
color.setNamedColor(colorName);
return color.isValid();
}
KColorDrag*
KColorDrag::makeDrag( const QColor &color,QWidget *dragsource)
{
return new KColorDrag( color, dragsource);
}
void KColorDrag::virtual_hook( int, void* )
{ /*BASE::virtual_hook( id, data );*/ }
#include "kcolordrag.moc"
KColorDrag::setColor
void setColor(const QColor &col)
Sets the color of the drag to col.
Definition: kcolordrag.cpp:40
KColorDrag
A drag-and-drop object for colors.
Definition: kcolordrag.h:36
KColorDrag::makeDrag
static KColorDrag * makeDrag(const QColor &, QWidget *dragsource) KDE_DEPRECATED
Definition: kcolordrag.cpp:104
KColorDrag::KColorDrag
KColorDrag(QWidget *dragsource=0, const char *name=0)
Constructs a color drag with a white color.
Definition: kcolordrag.cpp:33
KColorDrag::canDecode
static bool canDecode(QMimeSource *e)
Returns true if the MIME source e contains a color object.
Definition: kcolordrag.cpp:76
KColorDrag::decode
static bool decode(QMimeSource *e, QColor &col)
Decodes the MIME source e and puts the resulting color into col.
Definition: kcolordrag.cpp:89

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