mirror of
https://github.com/reactos/reactos.git
synced 2024-07-28 23:29:19 +00:00
550 lines
11 KiB
C
550 lines
11 KiB
C
/*
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* PROJECT: ReactOS win32 kernel mode subsystem
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: subsystems/win32/win32k/objects/text.c
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* PURPOSE: Text/Font
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* PROGRAMMER:
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*/
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/** Includes ******************************************************************/
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#include <win32k.h>
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#define NDEBUG
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#include <debug.h>
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/** Functions *****************************************************************/
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/*
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flOpts :
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GetTextExtentPoint32W = 0
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GetTextExtentPointW = 1
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*/
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BOOL
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FASTCALL
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GreGetTextExtentW(
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HDC hDC,
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LPWSTR lpwsz,
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INT cwc,
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LPSIZE psize,
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UINT flOpts)
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{
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PDC pdc;
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PDC_ATTR pdcattr;
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BOOL Result;
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PTEXTOBJ TextObj;
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if (!cwc)
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{
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psize->cx = 0;
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psize->cy = 0;
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return TRUE;
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}
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pdc = DC_LockDc(hDC);
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if (!pdc)
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{
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SetLastWin32Error(ERROR_INVALID_HANDLE);
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return FALSE;
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}
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pdcattr = pdc->pdcattr;
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TextObj = RealizeFontInit(pdcattr->hlfntNew);
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if ( TextObj )
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{
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Result = TextIntGetTextExtentPoint( pdc,
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TextObj,
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lpwsz,
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cwc,
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0,
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NULL,
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0,
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psize);
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TEXTOBJ_UnlockText(TextObj);
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}
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else
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Result = FALSE;
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DC_UnlockDc(pdc);
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return Result;
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}
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/*
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fl :
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GetTextExtentExPointW = 0 and everything else that uses this.
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GetTextExtentExPointI = 1
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*/
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BOOL
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FASTCALL
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GreGetTextExtentExW(
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HDC hDC,
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LPWSTR String,
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ULONG Count,
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ULONG MaxExtent,
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PULONG Fit,
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PULONG Dx,
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LPSIZE pSize,
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FLONG fl)
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{
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PDC pdc;
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PDC_ATTR pdcattr;
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BOOL Result;
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PTEXTOBJ TextObj;
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if ( (!String && Count ) || !pSize )
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{
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SetLastWin32Error(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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if ( !Count )
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{
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if ( Fit ) Fit = 0;
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return TRUE;
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}
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pdc = DC_LockDc(hDC);
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if (NULL == pdc)
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{
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SetLastWin32Error(ERROR_INVALID_HANDLE);
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return FALSE;
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}
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pdcattr = pdc->pdcattr;
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TextObj = RealizeFontInit(pdcattr->hlfntNew);
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if ( TextObj )
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{
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Result = TextIntGetTextExtentPoint( pdc,
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TextObj,
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String,
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Count,
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MaxExtent,
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(LPINT)Fit,
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(LPINT)Dx,
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pSize);
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TEXTOBJ_UnlockText(TextObj);
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}
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else
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Result = FALSE;
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DC_UnlockDc(pdc);
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return Result;
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}
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DWORD
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APIENTRY
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NtGdiGetCharSet(HDC hDC)
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{
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PDC Dc;
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PDC_ATTR pdcattr;
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DWORD cscp;
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// If here, update everything!
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Dc = DC_LockDc(hDC);
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if (!Dc)
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{
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SetLastWin32Error(ERROR_INVALID_HANDLE);
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return 0;
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}
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cscp = ftGdiGetTextCharsetInfo(Dc,NULL,0);
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pdcattr = Dc->pdcattr;
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pdcattr->iCS_CP = cscp;
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pdcattr->ulDirty_ &= ~DIRTY_CHARSET;
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DC_UnlockDc( Dc );
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return cscp;
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}
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BOOL
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APIENTRY
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NtGdiGetRasterizerCaps(
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OUT LPRASTERIZER_STATUS praststat,
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IN ULONG cjBytes)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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RASTERIZER_STATUS rsSafe;
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if (praststat && cjBytes)
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{
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if ( cjBytes >= sizeof(RASTERIZER_STATUS) ) cjBytes = sizeof(RASTERIZER_STATUS);
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if ( ftGdiGetRasterizerCaps(&rsSafe))
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{
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_SEH2_TRY
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{
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ProbeForWrite( praststat,
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sizeof(RASTERIZER_STATUS),
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1);
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RtlCopyMemory(praststat, &rsSafe, cjBytes );
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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Status = _SEH2_GetExceptionCode();
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}
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_SEH2_END;
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if (!NT_SUCCESS(Status))
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{
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SetLastNtError(Status);
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return FALSE;
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}
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return TRUE;
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}
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}
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return FALSE;
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}
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INT
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APIENTRY
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NtGdiGetTextCharsetInfo(
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IN HDC hdc,
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OUT OPTIONAL LPFONTSIGNATURE lpSig,
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IN DWORD dwFlags)
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{
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PDC Dc;
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INT Ret;
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FONTSIGNATURE fsSafe;
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PFONTSIGNATURE pfsSafe = &fsSafe;
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NTSTATUS Status = STATUS_SUCCESS;
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Dc = DC_LockDc(hdc);
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if (!Dc)
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{
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SetLastWin32Error(ERROR_INVALID_HANDLE);
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return DEFAULT_CHARSET;
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}
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if (!lpSig) pfsSafe = NULL;
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Ret = HIWORD(ftGdiGetTextCharsetInfo( Dc, pfsSafe, dwFlags));
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if (lpSig)
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{
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if (Ret == DEFAULT_CHARSET)
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RtlZeroMemory(pfsSafe, sizeof(FONTSIGNATURE));
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_SEH2_TRY
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{
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ProbeForWrite( lpSig,
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sizeof(FONTSIGNATURE),
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1);
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RtlCopyMemory(lpSig, pfsSafe, sizeof(FONTSIGNATURE));
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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Status = _SEH2_GetExceptionCode();
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}
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_SEH2_END;
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if (!NT_SUCCESS(Status))
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{
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SetLastNtError(Status);
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return DEFAULT_CHARSET;
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}
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}
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DC_UnlockDc(Dc);
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return Ret;
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}
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/*
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fl :
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GetTextExtentExPointW = 0 and everything else that uses this.
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GetTextExtentExPointI = 1
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*/
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W32KAPI
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BOOL
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APIENTRY
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NtGdiGetTextExtentExW(
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IN HDC hDC,
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IN OPTIONAL LPWSTR UnsafeString,
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IN ULONG Count,
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IN ULONG MaxExtent,
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OUT OPTIONAL PULONG UnsafeFit,
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OUT OPTIONAL PULONG UnsafeDx,
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OUT LPSIZE UnsafeSize,
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IN FLONG fl
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)
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{
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PDC dc;
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PDC_ATTR pdcattr;
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LPWSTR String;
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SIZE Size;
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NTSTATUS Status;
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BOOLEAN Result;
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INT Fit;
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LPINT Dx;
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PTEXTOBJ TextObj;
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/* FIXME: Handle fl */
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if (0 == Count)
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{
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Size.cx = 0;
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Size.cy = 0;
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Status = MmCopyToCaller(UnsafeSize, &Size, sizeof(SIZE));
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if (! NT_SUCCESS(Status))
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{
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SetLastNtError(Status);
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return FALSE;
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}
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return TRUE;
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}
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String = ExAllocatePoolWithTag(PagedPool, Count * sizeof(WCHAR), TAG_GDITEXT);
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if (NULL == String)
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{
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SetLastWin32Error(ERROR_NOT_ENOUGH_MEMORY);
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return FALSE;
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}
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if (NULL != UnsafeDx)
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{
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Dx = ExAllocatePoolWithTag(PagedPool, Count * sizeof(INT), TAG_GDITEXT);
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if (NULL == Dx)
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{
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ExFreePoolWithTag(String, TAG_GDITEXT);
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SetLastWin32Error(ERROR_NOT_ENOUGH_MEMORY);
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return FALSE;
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}
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}
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else
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{
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Dx = NULL;
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}
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Status = MmCopyFromCaller(String, UnsafeString, Count * sizeof(WCHAR));
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if (! NT_SUCCESS(Status))
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{
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if (NULL != Dx)
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{
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ExFreePoolWithTag(Dx, TAG_GDITEXT);
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}
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ExFreePoolWithTag(String, TAG_GDITEXT);
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SetLastNtError(Status);
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return FALSE;
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}
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dc = DC_LockDc(hDC);
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if (NULL == dc)
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{
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if (NULL != Dx)
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{
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ExFreePoolWithTag(Dx, TAG_GDITEXT);
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}
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ExFreePoolWithTag(String, TAG_GDITEXT);
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SetLastWin32Error(ERROR_INVALID_HANDLE);
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return FALSE;
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}
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pdcattr = dc->pdcattr;
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TextObj = RealizeFontInit(pdcattr->hlfntNew);
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if ( TextObj )
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{
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Result = TextIntGetTextExtentPoint( dc,
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TextObj,
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String,
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Count,
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MaxExtent,
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NULL == UnsafeFit ? NULL : &Fit,
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Dx,
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&Size);
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TEXTOBJ_UnlockText(TextObj);
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}
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else
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Result = FALSE;
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DC_UnlockDc(dc);
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ExFreePoolWithTag(String, TAG_GDITEXT);
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if (! Result)
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{
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if (NULL != Dx)
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{
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ExFreePoolWithTag(Dx, TAG_GDITEXT);
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}
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return FALSE;
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}
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if (NULL != UnsafeFit)
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{
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Status = MmCopyToCaller(UnsafeFit, &Fit, sizeof(INT));
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if (! NT_SUCCESS(Status))
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{
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if (NULL != Dx)
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{
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ExFreePoolWithTag(Dx, TAG_GDITEXT);
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}
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SetLastNtError(Status);
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return FALSE;
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}
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}
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if (NULL != UnsafeDx)
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{
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Status = MmCopyToCaller(UnsafeDx, Dx, Count * sizeof(INT));
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if (! NT_SUCCESS(Status))
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{
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if (NULL != Dx)
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{
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ExFreePoolWithTag(Dx, TAG_GDITEXT);
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}
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SetLastNtError(Status);
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return FALSE;
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}
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}
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if (NULL != Dx)
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{
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ExFreePoolWithTag(Dx,TAG_GDITEXT);
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}
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Status = MmCopyToCaller(UnsafeSize, &Size, sizeof(SIZE));
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if (! NT_SUCCESS(Status))
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{
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SetLastNtError(Status);
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return FALSE;
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}
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return TRUE;
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}
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/*
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flOpts :
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GetTextExtentPoint32W = 0
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GetTextExtentPointW = 1
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*/
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BOOL
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APIENTRY
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NtGdiGetTextExtent(HDC hdc,
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LPWSTR lpwsz,
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INT cwc,
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LPSIZE psize,
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UINT flOpts)
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{
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return NtGdiGetTextExtentExW(hdc, lpwsz, cwc, 0, NULL, NULL, psize, 0);
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}
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BOOL
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APIENTRY
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NtGdiSetTextJustification(HDC hDC,
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int BreakExtra,
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int BreakCount)
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{
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PDC pDc;
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PDC_ATTR pdcattr;
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pDc = DC_LockDc(hDC);
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if (!pDc)
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{
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SetLastWin32Error(ERROR_INVALID_HANDLE);
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return FALSE;
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}
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pdcattr = pDc->pdcattr;
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pdcattr->lBreakExtra = BreakExtra;
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pdcattr->cBreak = BreakCount;
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DC_UnlockDc(pDc);
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return TRUE;
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}
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W32KAPI
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INT
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APIENTRY
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NtGdiGetTextFaceW(
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IN HDC hDC,
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IN INT Count,
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OUT OPTIONAL LPWSTR FaceName,
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IN BOOL bAliasName
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)
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{
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PDC Dc;
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PDC_ATTR pdcattr;
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HFONT hFont;
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PTEXTOBJ TextObj;
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NTSTATUS Status;
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INT fLen, ret;
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/* FIXME: Handle bAliasName */
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Dc = DC_LockDc(hDC);
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if (Dc == NULL)
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{
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SetLastWin32Error(ERROR_INVALID_HANDLE);
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return FALSE;
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}
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pdcattr = Dc->pdcattr;
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hFont = pdcattr->hlfntNew;
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DC_UnlockDc(Dc);
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TextObj = RealizeFontInit(hFont);
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ASSERT(TextObj != NULL);
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fLen = wcslen(TextObj->logfont.elfEnumLogfontEx.elfLogFont.lfFaceName) + 1;
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if (FaceName != NULL)
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{
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Count = min(Count, fLen);
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Status = MmCopyToCaller(FaceName, TextObj->logfont.elfEnumLogfontEx.elfLogFont.lfFaceName, Count * sizeof(WCHAR));
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if (!NT_SUCCESS(Status))
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{
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TEXTOBJ_UnlockText(TextObj);
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SetLastNtError(Status);
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return 0;
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}
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/* Terminate if we copied only part of the font name */
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if (Count > 0 && Count < fLen)
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{
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FaceName[Count - 1] = '\0';
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}
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ret = Count;
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}
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else
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{
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ret = fLen;
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}
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TEXTOBJ_UnlockText(TextObj);
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return ret;
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}
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W32KAPI
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BOOL
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APIENTRY
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NtGdiGetTextMetricsW(
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IN HDC hDC,
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OUT TMW_INTERNAL * pUnsafeTmwi,
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IN ULONG cj
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)
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{
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TMW_INTERNAL Tmwi;
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NTSTATUS Status = STATUS_SUCCESS;
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if ( cj <= sizeof(TMW_INTERNAL) )
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{
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if (ftGdiGetTextMetricsW(hDC,&Tmwi))
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{
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_SEH2_TRY
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{
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ProbeForWrite(pUnsafeTmwi, cj, 1);
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RtlCopyMemory(pUnsafeTmwi,&Tmwi,cj);
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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Status = _SEH2_GetExceptionCode();
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}
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_SEH2_END
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if (!NT_SUCCESS(Status))
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{
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SetLastNtError(Status);
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return FALSE;
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}
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return TRUE;
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}
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}
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return FALSE;
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}
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/* EOF */
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