RE/RE_NTdibSection.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 *
 * Authored by:
 *      Chris Thompson
 *      Side Effects Software Inc.
 *
 * NAME:        RE_NTdibSection.h (Render Library, C++)
 *
 * COMMENTS:    A C++ class to wrap Windows DIB sections.
 *              Has support for 8, 16, and 24 bit DIB sections
 *              (monochrome could be added as needed).  Also
 *              has support for palettes on 8-bit DIB sections.
 *
 *              BTW, for those not familiar with what a DIB
 *              section is, it's basically a chunk of memory
 *              holding bitmap information.  DIB sections are
 *              a new feature of Win32, and are much faster
 *              than old-style DIBs.
 *
 */

#ifndef __RE_NTdibSection_h__
#define __RE_NTdibSection_h__

#include "RE_API.h"
#ifdef WIN32

#include <windows.h>
#include <UT/UT_Defines.h>

class RE_API RE_DIBSection
{
public:
    RE_DIBSection();
    virtual ~RE_DIBSection();

    // Create can be called multiple times.
    UT_Bool create(int widthPixels, int heightPixels, int bitCount );

    // Draw the DIB section onto a target DC.
    void draw(HDC dest, int x, int y, int rasterOp = SRCCOPY);

    // Fill the DIB section from a source DC.
    void copyFrom(HDC source, int width, int height,
                  int rasterOP = SRCCOPY,
                  int srcX = 0, int srcY = 0, int targetX = 0, int targetY = 0);

    // Set the palette used in the DIB section.
    void setPalette(HPALETTE palette) ;

    HDC     getDC()     { return myMemDC;   }
    HBITMAP getBitmap() { return myBitmap;  }
    SIZE    getSize()   { return mySizeDIB; }

protected:
    HBITMAP myBitmap;
    HBITMAP myBitmapOld;
    void*   myBits;         // Pointer to the bits.
    BITMAPV5HEADER myBih;
    SIZE    mySizeDIB;
    HDC     myMemDC;
        
    void    destroy() ;     // Destruction helper.
};

#endif // ifdef WIN32

#endif // __RE_NTdibSection_h__

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