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238 lines
7.3 KiB
C
238 lines
7.3 KiB
C
/*
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* text functions
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*
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* Copyright 1993, 1994 Alexandre Julliard
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* Copyright 2003 Shachar Shemesh
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdarg.h>
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#include <string.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "wine/winuser16.h"
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#include "winerror.h"
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#include "gdi.h"
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#include "wine/debug.h"
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#include "winnls.h"
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WINE_DEFAULT_DEBUG_CHANNEL(text);
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/***********************************************************************
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* FONT_mbtowc
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*
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* Returns a '\0' terminated Unicode translation of str using the
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* charset of the currently selected font in hdc. If count is -1 then
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* str is assumed to be '\0' terminated, otherwise it contains the
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* number of bytes to convert. If plenW is non-NULL, on return it
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* will point to the number of WCHARs (excluding the '\0') that have
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* been written. If pCP is non-NULL, on return it will point to the
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* codepage used in the conversion (NB, this may be CP_SYMBOL so watch
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* out). The caller should free the returned LPWSTR from the process
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* heap itself.
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*/
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LPWSTR FONT_mbtowc(HDC hdc, LPCSTR str, INT count, INT *plenW, UINT *pCP)
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{
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UINT cp = CP_ACP;
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INT lenW, i;
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LPWSTR strW;
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CHARSETINFO csi;
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int charset = GetTextCharset(hdc);
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/* Hmm, nicely designed api this one! */
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if(TranslateCharsetInfo((DWORD*)charset, &csi, TCI_SRCCHARSET))
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cp = csi.ciACP;
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else {
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switch(charset) {
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case OEM_CHARSET:
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cp = GetOEMCP();
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break;
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case DEFAULT_CHARSET:
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cp = GetACP();
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break;
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case VISCII_CHARSET:
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case TCVN_CHARSET:
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case KOI8_CHARSET:
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case ISO3_CHARSET:
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case ISO4_CHARSET:
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case ISO10_CHARSET:
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case CELTIC_CHARSET:
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/* FIXME: These have no place here, but because x11drv
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enumerates fonts with these (made up) charsets some apps
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might use them and then the FIXME below would become
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annoying. Now we could pick the intended codepage for
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each of these, but since it's broken anyway we'll just
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use CP_ACP and hope it'll go away...
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*/
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cp = CP_ACP;
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break;
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default:
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FIXME("Can't find codepage for charset %d\n", charset);
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break;
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}
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}
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TRACE("cp == %d\n", cp);
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if(count == -1) count = strlen(str);
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if(cp != CP_SYMBOL) {
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lenW = MultiByteToWideChar(cp, 0, str, count, NULL, 0);
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strW = HeapAlloc(GetProcessHeap(), 0, (lenW + 1) * sizeof(WCHAR));
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MultiByteToWideChar(cp, 0, str, count, strW, lenW);
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} else {
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lenW = count;
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strW = HeapAlloc(GetProcessHeap(), 0, (lenW + 1) * sizeof(WCHAR));
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for(i = 0; i < count; i++) strW[i] = (BYTE)str[i];
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}
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strW[lenW] = '\0';
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TRACE("mapped %s -> %s\n", debugstr_an(str, count), debugstr_wn(strW, lenW));
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if(plenW) *plenW = lenW;
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if(pCP) *pCP = cp;
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return strW;
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}
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/***********************************************************************
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* ExtTextOutA (GDI32.@)
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*/
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BOOL WINAPI ExtTextOutA( HDC hdc, INT x, INT y, UINT flags,
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const RECT *lprect, LPCSTR str, UINT count, const INT *lpDx )
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{
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INT wlen;
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UINT codepage;
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LPWSTR p = FONT_mbtowc(hdc, str, count, &wlen, &codepage);
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BOOL ret;
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LPINT lpDxW = NULL;
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if (lpDx) {
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unsigned int i = 0, j = 0;
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lpDxW = (LPINT)HeapAlloc( GetProcessHeap(), 0, wlen*sizeof(INT));
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while(i < count) {
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if(IsDBCSLeadByteEx(codepage, str[i])) {
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lpDxW[j++] = lpDx[i] + lpDx[i+1];
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i = i + 2;
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} else {
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lpDxW[j++] = lpDx[i];
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i = i + 1;
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}
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}
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}
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ret = ExtTextOutW( hdc, x, y, flags, lprect, p, wlen, lpDxW );
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HeapFree( GetProcessHeap(), 0, p );
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if (lpDxW) HeapFree( GetProcessHeap(), 0, lpDxW );
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return ret;
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}
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/***********************************************************************
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* ExtTextOutW (GDI32.@)
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*/
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BOOL WINAPI ExtTextOutW( HDC hdc, INT x, INT y, UINT flags,
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const RECT *lprect, LPCWSTR str, UINT count, const INT *lpDx )
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{
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BOOL ret = FALSE;
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DC * dc = DC_GetDCUpdate( hdc );
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if (dc)
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{
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if(PATH_IsPathOpen(dc->path))
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FIXME("called on an open path\n");
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else if(dc->funcs->pExtTextOut)
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{
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if( !(flags&(ETO_GLYPH_INDEX|ETO_IGNORELANGUAGE)) && BidiAvail && count>0 )
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{
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/* The caller did not specify that language processing was already done.
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*/
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LPWSTR lpReorderedString=HeapAlloc(GetProcessHeap(), 0, count*sizeof(WCHAR));
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BIDI_Reorder( str, count, GCP_REORDER,
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((flags&ETO_RTLREADING)!=0 || (GetTextAlign(hdc)&TA_RTLREADING)!=0)?
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WINE_GCPW_FORCE_RTL:WINE_GCPW_FORCE_LTR,
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lpReorderedString, count, NULL );
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ret = dc->funcs->pExtTextOut(dc->physDev,x,y,flags|ETO_IGNORELANGUAGE,
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lprect,lpReorderedString,count,lpDx);
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HeapFree(GetProcessHeap(), 0, lpReorderedString);
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} else
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ret = dc->funcs->pExtTextOut(dc->physDev,x,y,flags,lprect,str,count,lpDx);
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}
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GDI_ReleaseObj( hdc );
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}
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return ret;
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}
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/***********************************************************************
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* TextOutA (GDI32.@)
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*/
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BOOL WINAPI TextOutA( HDC hdc, INT x, INT y, LPCSTR str, INT count )
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{
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return ExtTextOutA( hdc, x, y, 0, NULL, str, count, NULL );
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}
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/***********************************************************************
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* TextOutW (GDI32.@)
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*/
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BOOL WINAPI TextOutW(HDC hdc, INT x, INT y, LPCWSTR str, INT count)
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{
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return ExtTextOutW( hdc, x, y, 0, NULL, str, count, NULL );
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}
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/***********************************************************************
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* PolyTextOutA (GDI32.@)
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*
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* Draw several Strings
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*/
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BOOL WINAPI PolyTextOutA (
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HDC hdc, /* [in] Handle to device context */
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PPOLYTEXTA pptxt, /* [in] Array of strings */
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INT cStrings /* [in] Number of strings in array */
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)
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{
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for (; cStrings>0; cStrings--, pptxt++)
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if (!ExtTextOutA( hdc, pptxt->x, pptxt->y, pptxt->uiFlags, &pptxt->rcl, pptxt->lpstr, pptxt->n, pptxt->pdx ))
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return FALSE;
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return TRUE;
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}
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/***********************************************************************
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* PolyTextOutW (GDI32.@)
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*
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* Draw several Strings
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*/
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BOOL WINAPI PolyTextOutW (
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HDC hdc, /* [in] Handle to device context */
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PPOLYTEXTW pptxt, /* [in] Array of strings */
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INT cStrings /* [in] Number of strings in array */
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)
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{
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for (; cStrings>0; cStrings--, pptxt++)
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if (!ExtTextOutW( hdc, pptxt->x, pptxt->y, pptxt->uiFlags, &pptxt->rcl, pptxt->lpstr, pptxt->n, pptxt->pdx ))
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return FALSE;
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return TRUE;
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}
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