FxPreviewBitmap.h

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//
// (C) Copyright 2005-2022 by Graebert GmbH.
//
// Permission to use, copy, modify, and distribute this software in
// object code form for any purpose and without fee is hereby granted,
// provided that the above copyright notice appears in all copies and
// that both that copyright notice and the limited warranty and
// restricted rights notice below appear in all supporting
// documentation.
//
// GRAEBERT PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
// GRAEBERT SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE.  GRAEBERT GMBH
// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
// UNINTERRUPTED OR ERROR FREE.
 
#pragma once
 
#include "DDKERNEL.h"
#include <Gi/GiRasterImage.h>
#include <ThumbnailImage.h>
 
#include "FxPragmaPush.h"
 
class CFxString;
 
class QImage;
class QIODevice;
 
struct IStream;
 
class DDKERNEL_API CFxPreviewBitmap
{
public:
    /* {secret} */
    virtual ~CFxPreviewBitmap();
 
    static CFxPreviewBitmap* Create();
 
    virtual bool Read( const CFxString & lpFileName ) = 0;
 
    virtual bool HasPreview() = 0;
 
    virtual void Clear() = 0;
 
    virtual void DrawToQImage( QImage * image ) = 0;
 
#if defined(_MSC_VER)
    virtual bool Read( IStream *pStream ) = 0;
 
    virtual void DrawToHDC( HDC dc, int x, int y, int width, int height ) = 0;
 
    virtual void GetBitmapAndPalette( HBITMAP *image, HPALETTE *hPalette ) = 0;
 
    static void DrawNoPreview( HDC hDC, const RECT* lprc, COLORREF* pBgColor );
 
#endif
};
 
#include "FxPragmaPop.h"