Amebis/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add wxInvertMask for OS/2 xpm processing

Browse Source 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@9217 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
David Webster
2001-01-29 21:42:53 +00:00
parent c68d524366
commit 020a1653a4
3 changed files with 140 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

70
src/os2/bitmap.cpp
View File

@@ -965,3 +965,73 @@ bool wxBitmapHandler::SaveFile(
return(FALSE);
}
// ----------------------------------------------------------------------------
// Utility functions
// ----------------------------------------------------------------------------
HBITMAP wxInvertMask(
HBITMAP hBmpMask
, int nWidth
, int nHeight
)
{
HBITMAP hBmpInvMask = 0;
wxCHECK_MSG( hBmpMask, 0, _T("invalid bitmap in wxInvertMask") );
//
// Get width/height from the bitmap if not given
//
if (!nWidth || !nHeight)
{
BITMAPINFOHEADER2 vBmhdr;
::GpiQueryBitmapInfoHeader( hBmpMask
,&vBmhdr
);
nWidth = (int)vBmhdr.cx;
nHeight = (int)vBmhdr.cyt;
}
BITMAPINFOHEADER2 vBmih;
SIZEL vSize = {0, 0};
DEVOPENSTRUC vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
HDC hDCSrc = ::DevOpenDC(ghAb, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
HDC hDCDst = ::DevOpenDC(ghAb, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
HPS hPSSrc = ::GpiCreatePS(ghAb, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
HPS hPSDst = ::GpiCreatePS(ghAb, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
POINTL vPoint[4] = { 0 ,0, rBitmap.GetWidth(), rBitmap.GetHeight(),
0, 0, rBitmap.GetWidth(), rBitmap.GetHeight()
};
memset(&vBmih, NULLC, sizeof(BITMAPINFOHEADER2));
vBmih.cbFix = sizeof(BITMAPINFOHEADER2);
vBmih.cx = lWidth;
vBmih.cy = lHeight;
vBmih.cPlanes = 1;
vBmih.cBitCount = 1;
hBmpInvMask = ::GpiCreateBitmap( hPSDst
,&vBmih
,0L
,NULL
,NULL
);
::GpiSetBitmap(hPSSrc, (HBITMAP) hBmpMask);
::GpiSetBitmap(hPSDst, (HBITMAP) hBmpInvMask);
::GpiBitBlt( hPSDst
,hPSSrc
,4L
,&vPoint
,ROP_SRCCOPY
,BBO_IGNORE
);
::GpiDestroyPS(hPSSrc);
::GpiDestroyPS(hPSDst);
::DevCloseDC(hDCSrc);
::DevCloseDC(hDCDtl);
return hBmpInvMask;
} // end of WxWinGdi_InvertMask