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qt_imager.h

//C-  -*- C++ -*-
//C- -------------------------------------------------------------------
//C- DjVuLibre-3.5
//C- Copyright (c) 2002  Leon Bottou and Yann Le Cun.
//C- Copyright (c) 2001  AT&T
//C-
//C- This software is subject to, and may be distributed under, the
//C- GNU General Public License, either Version 2 of the license,
//C- or (at your option) any later version. The license should have
//C- accompanied the software or you may obtain a copy of the license
//C- from the Free Software Foundation at http://www.fsf.org .
//C-
//C- This program is distributed in the hope that it will be useful,
//C- but WITHOUT ANY WARRANTY; without even the implied warranty of
//C- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//C- GNU General Public License for more details.
//C- 
//C- DjVuLibre-3.5 is derived from the DjVu(r) Reference Library from
//C- Lizardtech Software.  Lizardtech Software has authorized us to
//C- replace the original DjVu(r) Reference Library notice by the following
//C- text (see doc/lizard2002.djvu and doc/lizardtech2007.djvu):
//C-
//C-  ------------------------------------------------------------------
//C- | DjVu (r) Reference Library (v. 3.5)
//C- | Copyright (c) 1999-2001 LizardTech, Inc. All Rights Reserved.
//C- | The DjVu Reference Library is protected by U.S. Pat. No.
//C- | 6,058,214 and patents pending.
//C- |
//C- | This software is subject to, and may be distributed under, the
//C- | GNU General Public License, either Version 2 of the license,
//C- | or (at your option) any later version. The license should have
//C- | accompanied the software or you may obtain a copy of the license
//C- | from the Free Software Foundation at http://www.fsf.org .
//C- |
//C- | The computer code originally released by LizardTech under this
//C- | license and unmodified by other parties is deemed "the LIZARDTECH
//C- | ORIGINAL CODE."  Subject to any third party intellectual property
//C- | claims, LizardTech grants recipient a worldwide, royalty-free, 
//C- | non-exclusive license to make, use, sell, or otherwise dispose of 
//C- | the LIZARDTECH ORIGINAL CODE or of programs derived from the 
//C- | LIZARDTECH ORIGINAL CODE in compliance with the terms of the GNU 
//C- | General Public License.   This grant only confers the right to 
//C- | infringe patent claims underlying the LIZARDTECH ORIGINAL CODE to 
//C- | the extent such infringement is reasonably necessary to enable 
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//C- | any greater extent that may be necessary to utilize further 
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//C- |
//C- | The LIZARDTECH ORIGINAL CODE is provided "AS IS" WITHOUT WARRANTY
//C- | OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
//C- | TO ANY WARRANTY OF NON-INFRINGEMENT, OR ANY IMPLIED WARRANTY OF
//C- | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
//C- +------------------------------------------------------------------
// 
// $Id: qt_imager.h,v 1.8 2007/03/25 20:48:23 leonb Exp $
// $Name: debian_version_3_5_22-6 $

#ifndef HDR_QT_IMAGER
#define HDR_QT_IMAGER
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#if NEED_GNUG_PRAGMAS
# pragma interface
#endif


#include "int_types.h"

#include <qcolor.h>
#include <qpixmap.h>

// The purpose of this class is to provide standard interface to Imagers
// doing the real job: like QXImager for X11.

// The point is to use this class (include this header) whenever possible
// and deal with QXImager (or QWImager) only when necessary (e.g. when
// initializing)

class QeImager
{
public:
   virtual u_int32      getGrayXColor(float level)=0;
   virtual u_int32      getXColor(u_char r, u_char g, u_char b)=0;
   virtual u_int32      getXColor(u_int32 color)=0;
   virtual u_int32      getXColor(const char *name)=0;

   virtual QColor getGrayColor(float level)=0;
   virtual QColor getColor(u_char r, u_char g, u_char b)=0;
   virtual QColor getColor(u_int32 color)=0;
   virtual QColor getColor(const char *name)=0;
   virtual QColor getColor(const QColor & col)=0;

      // Creates a pixmap of the given size, fills it with the given
      // color, dithers according to the depth and returns it.
   virtual QPixmap      getColorPixmap(int width, int height,
                               u_char r, u_char g, u_char b)=0;
   virtual QPixmap      getColorPixmap(int width, int height,
                               u_int32 color)=0;

   QeImager(void);
   virtual ~QeImager(void);
};

extern QeImager   * qeImager;

#endif

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