mirror of
https://github.com/reactos/reactos.git
synced 2024-12-28 18:15:11 +00:00
620 lines
14 KiB
C
620 lines
14 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: win32ss/gdi/ntgdi/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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/*
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This is a hack. See CORE-1091.
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It is needed because ReactOS does not support raster fonts now.
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After Raster Font support is added, then it can be removed.
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Find the current font's logfont for testing its lf.lfFaceName.
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The ftGdiGetTextMetricsW function currently in ReactOS will always return a Truetype font
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because we cannot yet handle raster fonts. So it will return flags
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TMPF_VECTOR and TMPF_TRUETYPE, which can cause problems in edit boxes.
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*/
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VOID FASTCALL
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IntTMWFixUp(
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HDC hDC,
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TMW_INTERNAL *ptm)
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{
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LOGFONTW lf;
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HFONT hCurrentFont;
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hCurrentFont = NtGdiGetDCObject(hDC, GDI_OBJECT_TYPE_FONT);
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GreGetObject(hCurrentFont, sizeof(LOGFONTW), &lf);
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/* To compensate for the GetTextMetricsW call changing the PitchAndFamily
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* to a TrueType one when we have a 'Raster' font as our input we filter
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* out the problematic TrueType and Vector bits.
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* Our list below checks for Raster Font Facenames. */
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DPRINT("Font Facename is '%S'.\n", lf.lfFaceName);
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if ((wcsicmp(lf.lfFaceName, L"Courier") == 0) ||
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(wcsicmp(lf.lfFaceName, L"FixedSys") == 0) ||
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(wcsicmp(lf.lfFaceName, L"Helv") == 0) ||
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(wcsicmp(lf.lfFaceName, L"MS Sans Serif") == 0) ||
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(wcsicmp(lf.lfFaceName, L"MS Serif") == 0) ||
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(wcsicmp(lf.lfFaceName, L"System") == 0) ||
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(wcsicmp(lf.lfFaceName, L"Terminal") == 0) ||
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(wcsicmp(lf.lfFaceName, L"Tms Rmn") == 0))
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{
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ptm->TextMetric.tmPitchAndFamily &= ~(TMPF_TRUETYPE | TMPF_VECTOR);
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}
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}
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/** Functions *****************************************************************/
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BOOL FASTCALL
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GreTextOutW(
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HDC hdc,
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int nXStart,
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int nYStart,
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LPCWSTR lpString,
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int cchString)
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{
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return GreExtTextOutW(hdc, nXStart, nYStart, 0, NULL, lpString, cchString, NULL, 0);
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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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FASTCALL
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GreGetTextExtentW(
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HDC hDC,
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LPCWSTR 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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EngSetLastError(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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flOpts);
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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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LPCWSTR 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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EngSetLastError(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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EngSetLastError(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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fl);
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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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BOOL
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WINAPI
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GreGetTextMetricsW(
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_In_ HDC hdc,
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_Out_ LPTEXTMETRICW lptm)
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{
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TMW_INTERNAL tmwi;
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if (!ftGdiGetTextMetricsW(hdc, &tmwi)) return FALSE;
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IntTMWFixUp(hdc, &tmwi);
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*lptm = tmwi.TextMetric;
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return TRUE;
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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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EngSetLastError(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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EngSetLastError(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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if ((LONG)Count < 0)
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{
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EngSetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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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), GDITAG_TEXT);
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if (NULL == String)
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{
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EngSetLastError(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), GDITAG_TEXT);
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if (NULL == Dx)
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{
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ExFreePoolWithTag(String, GDITAG_TEXT);
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EngSetLastError(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, GDITAG_TEXT);
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}
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ExFreePoolWithTag(String, GDITAG_TEXT);
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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, GDITAG_TEXT);
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}
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ExFreePoolWithTag(String, GDITAG_TEXT);
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EngSetLastError(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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fl);
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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, GDITAG_TEXT);
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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, GDITAG_TEXT);
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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, GDITAG_TEXT);
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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, GDITAG_TEXT);
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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, GDITAG_TEXT);
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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, flOpts);
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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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EngSetLastError(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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SIZE_T fLen;
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INT 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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EngSetLastError(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->TextFace) + 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->TextFace, 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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TMW_INTERNAL Tmwi;
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if ( cj <= sizeof(TMW_INTERNAL) )
|
|
{
|
|
if (ftGdiGetTextMetricsW(hDC, &Tmwi))
|
|
{
|
|
IntTMWFixUp(hDC, &Tmwi);
|
|
_SEH2_TRY
|
|
{
|
|
ProbeForWrite(pUnsafeTmwi, cj, 1);
|
|
RtlCopyMemory(pUnsafeTmwi, &Tmwi, cj);
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
SetLastNtError(_SEH2_GetExceptionCode());
|
|
_SEH2_YIELD(return FALSE);
|
|
}
|
|
_SEH2_END
|
|
|
|
return TRUE;
|
|
}
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
/* EOF */
|