175 lines
5.1 KiB
C++
175 lines
5.1 KiB
C++
/**********************************************************************/
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/** Microsoft Windows/NT **/
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/** Copyright(c) Microsoft Corp., 1991 **/
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/**********************************************************************/
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/*
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bltbitmp.hxx
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Bitmap and display map definitions
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Note: This file depends on the BMID typedef in blt.hxx
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FILE HISTORY:
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rustanl 3-Dec-1990 Created
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JohnL 4-Mar-1991 Fully implemented display map
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Johnl 18-Mar-1991 Made code review changes
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Terryk 22-Mar-1991 comment header changed
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gregj 1-May-1991 Added DISPLAY_MAP::QueryID
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beng 14-May-1991 Hacked for separate compilation
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terryk 19-Jul-1991 Delete BLT_MAP::BLT_MAP( ULONG )
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Add BLT_MAP::SetBitmap( HBITMAP hbitmap )
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*/
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#ifndef _BLT_HXX_
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#error "Don't include this file directly; instead, include it through blt.hxx"
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#endif // _BLT_HXX_
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#ifndef _BLTBITMP_HXX_
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#define _BLTBITMP_HXX_
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#include "base.hxx"
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#include "bltidres.hxx"
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// The following is the color that will be mapped to the screen background.
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// for DISPLAY_MAP objects. (this is bright green).
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//
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#define DISPLAY_MAP_TRANS_COLOR RGB(0x00, 0xFF, 0x00 )
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/*************************************************************************
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NAME: BIT_MAP
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SYNOPSIS: General wrapper for a bitmap object
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INTERFACE:
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BIT_MAP()
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Takes a bitmap ID defined in the resource and attempts to
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load it from the resource. Will assert out in debug version
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if loading fails.
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BIT_MAP()
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Assumes hbitmp is a valid bitmap handle and initializes the
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BIT_MAP object accordingly
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QueryHandle()
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Returns the bitmap handle
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QueryWidth()
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QueryHeight()
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Returns the width and the height (respectively)
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QueryError()
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Returns ERROR_INVALID_DATA if this BIT_MAP object is NULL
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PARENT: BASE
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NOTES: The bitmap is deleted during destruction.
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HISTORY:
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Rustanl 3-Dec-1990 Created
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Johnl 13-Mar-1991 Documented, cleaned up
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terryk 21-Jun-1991 Add 2 more constructors for bitmap class
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terryk 19-Jul-1991 Delete BLT_MAP( ULONG ) and Add
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SetBitmap( HBITMAP hbitmap )
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beng 04-Oct-1991 Win32 conversion
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beng 28-Jul-1992 Loads from app or lib; use IDRESOURCE
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**************************************************************************/
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DLL_CLASS BIT_MAP : public BASE
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{
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public:
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BIT_MAP( const IDRESOURCE & id );
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BIT_MAP( HBITMAP hbitmp );
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~BIT_MAP();
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HBITMAP QueryHandle() const;
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UINT QueryHeight() const;
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UINT QueryWidth() const;
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VOID SetBitmap( HBITMAP hbitmap );
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private:
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HBITMAP _h;
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};
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/*************************************************************************
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NAME: DISPLAY_MAP
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SYNOPSIS: Used when portions of a bitmap need to transparently overlay
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the underlying screen. Generates the mask to do so automatically.
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INTERFACE:
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DISPLAY_MAP()
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Takes a BMID (Bitmap ID) and generates the mask automatically
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(note: the bitmap is twiddled with also, so don't use it
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by itself, always use the DISPLAY_MAP::Paint method).
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QueryMaskHandle()
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QueryBitmapHandle()
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Gets the HBITMAP of the mask and handle respectively
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QueryWidth()
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QueryHeight()
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Gets the width and height of the display map.
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QueryID()
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Gets the DMID for the display map.
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Paint()
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Paints this display map onto the given device context
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at the given position. Returns TRUE if successful,
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FALSE otherwise (BitBlt failed for some reason).
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PARENT: BASE
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HISTORY:
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Johnl 1-Mar-1991 Created first real version
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gregj 1-May-1991 Added QueryID() for GUILTT support
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beng 04-Oct-1991 Win32 conversion
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**************************************************************************/
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DLL_CLASS DISPLAY_MAP : public BASE
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{
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public:
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DISPLAY_MAP( BMID bmid );
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~DISPLAY_MAP();
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HBITMAP QueryMaskHandle() const;
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HBITMAP QueryBitmapHandle() const;
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UINT QueryHeight() const;
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UINT QueryWidth() const;
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BOOL Paint( HDC hDC, INT x, INT y ) const;
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BMID QueryID() const { return _bmid; }
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private:
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BIT_MAP * _pbmMask; // Pointer to the bitmap of the mask
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BIT_MAP * _pbmBitmap; // Pointer to the bitmap image
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BMID _bmid; // display map ID
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VOID SetMaskBits( BYTE * pbBits,
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INT nColorIndex,
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INT nBitsPerPixel,
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UINT cbSize );
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VOID SetBitmapBits( BYTE * pbBits,
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INT nColorIndex,
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INT nBitsPerPixel,
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UINT cbSize );
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INT GetTransColorIndex( DWORD *pdwRGB, INT nNumDWords ) const;
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};
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#endif // _BLTBITMP_HXX - end of file
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