a61ddc4715
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3815 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
133 lines
5.4 KiB
C
133 lines
5.4 KiB
C
/////////////////////////////////////////////////////////////////////////////
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// Name: dibutils.h
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// Purpose: Utilities for DIBs
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// Author: Julian Smart
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// Modified by:
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// Created: 04/01/98
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// RCS-ID: $Id$
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// Copyright: (c) Microsoft, Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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/***************************************************************************
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(C) Copyright 1994 Microsoft Corp. All rights reserved.
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You have a royalty-free right to use, modify, reproduce and
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distribute the Sample Files (and/or any modified version) in
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any way you find useful, provided that you agree that
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Microsoft has no warranty obligations or liability for any
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Sample Application Files which are modified.
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**************************************************************************/
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/***************************************************************************
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Functions for handling Device Independent Bitmaps and clearing the
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System Palette.
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**************************************************************************/
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#ifndef SAMPLES_UTILS_H
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#define SAMPLES_UTILS_H
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#ifdef __GNUG__
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#pragma interface "dibutils.h"
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#endif
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typedef LPBITMAPINFOHEADER PDIB;
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typedef HANDLE HDIB;
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/***************************************************************************
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External function declarations
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**************************************************************************/
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void wxClearSystemPalette(void);
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PDIB wxDibOpenFile(LPTSTR szFile);
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int wxDibWriteFile(LPTSTR szFile, LPBITMAPINFOHEADER lpbi);
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BOOL wxDibSetUsage(PDIB pdib, HPALETTE hpal,UINT wUsage);
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PDIB wxDibCreate(int bits, int dx, int dy);
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BOOL wxDibMapToPalette(PDIB pdib, HPALETTE hpal);
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HPALETTE wxMakePalette(const BITMAPINFO FAR* Info, UINT flags);
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/****************************************************************************
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Internal function declarations
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***************************************************************************/
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PDIB wxDibReadBitmapInfo(HFILE fh);
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/****************************************************************************
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DIB macros.
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***************************************************************************/
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#ifdef WIN32
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#define wxHandleFromDib(lpbi) GlobalHandle(lpbi)
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#else
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#define wxHandleFromDib(lpbi) (HANDLE)GlobalHandle(SELECTOROF(lpbi))
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#endif
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#define wxDibFromHandle(h) (PDIB)GlobalLock(h)
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#define wxDibFree(pdib) GlobalFreePtr(pdib)
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#define wxWIDTHBYTES(i) ((unsigned)((i+31)&(~31))/8) /* ULONG aligned ! */
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#define wxDibWidth(lpbi) (UINT)(((LPBITMAPINFOHEADER)(lpbi))->biWidth)
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#define wxDibHeight(lpbi) (UINT)(((LPBITMAPINFOHEADER)(lpbi))->biHeight)
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#define wxDibBitCount(lpbi) (UINT)(((LPBITMAPINFOHEADER)(lpbi))->biBitCount)
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#define wxDibCompression(lpbi) (DWORD)(((LPBITMAPINFOHEADER)(lpbi))->biCompression)
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#define wxDibWidthBytesN(lpbi, n) (UINT)wxWIDTHBYTES((UINT)(lpbi)->biWidth * (UINT)(n))
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#define wxDibWidthBytes(lpbi) wxDibWidthBytesN(lpbi, (lpbi)->biBitCount)
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#define wxDibSizeImage(lpbi) ((lpbi)->biSizeImage == 0 \
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? ((DWORD)(UINT)wxDibWidthBytes(lpbi) * (DWORD)(UINT)(lpbi)->biHeight) \
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: (lpbi)->biSizeImage)
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#define wxDibSize(lpbi) ((lpbi)->biSize + (lpbi)->biSizeImage + (int)(lpbi)->biClrUsed * sizeof(RGBQUAD))
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#define wxDibPaletteSize(lpbi) (wxDibNumColors(lpbi) * sizeof(RGBQUAD))
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#define wxDibFlipY(lpbi, y) ((int)(lpbi)->biHeight-1-(y))
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//HACK for NT BI_BITFIELDS DIBs
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#ifdef WIN32
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#define wxDibPtr(lpbi) ((lpbi)->biCompression == BI_BITFIELDS \
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? (LPVOID)(wxDibColors(lpbi) + 3) \
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: (LPVOID)(wxDibColors(lpbi) + (UINT)(lpbi)->biClrUsed))
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#else
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#define wxDibPtr(lpbi) (LPVOID)(wxDibColors(lpbi) + (UINT)(lpbi)->biClrUsed)
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#endif
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#define wxDibColors(lpbi) ((RGBQUAD FAR *)((LPBYTE)(lpbi) + (int)(lpbi)->biSize))
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#define wxDibNumColors(lpbi) ((lpbi)->biClrUsed == 0 && (lpbi)->biBitCount <= 8 \
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? (int)(1 << (int)(lpbi)->biBitCount) \
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: (int)(lpbi)->biClrUsed)
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#define wxDibXYN(lpbi,pb,x,y,n) (LPVOID)( \
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(BYTE _huge *)(pb) + \
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(UINT)((UINT)(x) * (UINT)(n) / 8u) + \
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((DWORD)wxDibWidthBytesN(lpbi,n) * (DWORD)(UINT)(y)))
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#define wxDibXY(lpbi,x,y) wxDibXYN(lpbi,wxDibPtr(lpbi),x,y,(lpbi)->biBitCount)
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#define wxFixBitmapInfo(lpbi) if ((lpbi)->biSizeImage == 0) \
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(lpbi)->biSizeImage = wxDibSizeImage(lpbi); \
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if ((lpbi)->biClrUsed == 0) \
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(lpbi)->biClrUsed = wxDibNumColors(lpbi);
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// if ((lpbi)->biCompression == BI_BITFIELDS && (lpbi)->biClrUsed == 0)
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// ; // (lpbi)->biClrUsed = 3;
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#define wxDibInfo(pDIB) ((BITMAPINFO FAR *)(pDIB))
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/***************************************************************************/
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#ifndef BI_BITFIELDS
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#define BI_BITFIELDS 3
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#endif
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#ifndef HALFTONE
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#define HALFTONE COLORONCOLOR
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#endif
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#endif
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