Dib.h

//
// Parts of this module were derived from example code in the
// 1996 Microsoft Systems Journal, by Paul DiLascia.
//

#ifndef BEXTRACTOR_DIB_H
#define BEXTRACTOR_DIB_H

#ifndef _INC_VFW
#pragma message ("NOTE: You can speed compilation by including <vfw.h> in stdafx.h")
#include <vfw.h>
#endif

class GDALRasterBand;
class GDALDataset;

// global functions for ordinary CBitmap too
//
extern CSize GetBitmapSize(CBitmap* pBitmap);
extern BOOL  DrawBitmap(CDC& dc, CBitmap* pBitmap,
    const CRect* rcDst=NULL, const CRect* rcSrc=NULL);

// CDib implements Device Independent Bitmaps as a form of CBitmap.
//
class CDib : public CBitmap
{
protected:
    DECLARE_DYNAMIC(CDib)
    BITMAP  m_bm;       // stored for speed
    CPalette m_pal;     // palette
    HDRAWDIB m_hdd;     // for DrawDib
    void *m_data;
    HBITMAP m_hbm;

    BITMAPINFOHEADER *m_bmi;
    RGBQUAD *m_colors;
    int m_stride;

public:
    CDib();
    ~CDib();

    bool Setup(CDC* pDC, int width, int height, int bits_per_pixel,
        HDRAWDIB hdd, RGBQUAD *colors = NULL);

    bool Setup(CDC* pDC, GDALDataset *pDataset, HDRAWDIB hdd,
        bool progress_callback(int) = NULL);

    CSize   GetSize() { return CSize(m_bm.bmWidth, m_bm.bmHeight); }
    BOOL Attach(HGDIOBJ hbm);
    BOOL Load(LPCTSTR szPathName);
    BOOL Load(HINSTANCE hInst, LPCTSTR lpResourceName);
    BOOL Load(HINSTANCE hInst, UINT uID)
        { return Load(hInst, MAKEINTRESOURCE(uID)); }

    // Universal Draw function can use DrawDib or not.
    BOOL Draw(CDC& dc, const CRect* rcDst=NULL, const CRect* rcSrc=NULL,
        BOOL bUseDrawDib=TRUE, CPalette* pPal=NULL, BOOL bForeground=FALSE);

    void GetDIBFromSection();
    BOOL DeleteObject();
    BOOL CreatePalette(CPalette& pal);
    CPalette* GetPalette()  { return &m_pal; }

    UINT GetColorTable(RGBQUAD* colorTab, UINT nColors);

    void    SetPixel24(int x, int y, const RGBQUAD &rgb);
    void    GetPixel24(int x, int y, RGBQUAD &rgb);
    byte    GetPixel8(int x, int y);
    void    SetPixel8(int x, int y, byte val);
    int     GetWidth() { return m_bm.bmWidth; }
    int     GetHeight() { return m_bm.bmHeight; }
    BITMAPINFOHEADER *GetDIBHeader() { return m_bmi; }
    char    *GetData() { return (char *) m_data; }
};

CDib *CreateMonoDib(CDC *pDC, CDib *pDib, HDRAWDIB hdd, bool progress_callback(int) = NULL);

#endif // BEXTRACTOR_DIB_H