text.c File Reference

#include <user32.h>
#include <wine/debug.h>

Include dependency graph for text.c:

Go to the source code of this file.

Classes
struct	tag_ellipsis_data

Macros
#define	assert(e)   ((e) ? (void)0 : _font_assert(#e, __FILE__, __LINE__))
#define	TAB   9
#define	LF   10
#define	CR   13
#define	SPACE   32
#define	PREFIX   38
#define	ALPHA_PREFIX   30 /* Win16: Alphabet prefix */
#define	KANA_PREFIX   31 /* Win16: Katakana prefix */
#define	FORWARD_SLASH   '/'
#define	BACK_SLASH   '\\'
#define	MAX_BUFFER   1024

Typedefs
typedef struct tag_ellipsis_data	ellipsis_data

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (text)
void	_font_assert (const char *msg, const char *file, int line)
static void	TEXT_Ellipsify (HDC hdc, WCHAR *str, unsigned int max_len, unsigned int *len_str, int width, SIZE *size, WCHAR *modstr, int *len_before, int *len_ellip)
static void	TEXT_PathEllipsify (HDC hdc, WCHAR *str, unsigned int max_len, unsigned int *len_str, int width, SIZE *size, WCHAR *modstr, ellipsis_data *pellip)
FORCEINLINE BOOL	IsCJKT (WCHAR wch)
static void	TEXT_WordBreak (HDC hdc, WCHAR *str, unsigned int max_str, unsigned int *len_str, int width, int format, unsigned int chars_fit, unsigned int *chars_used, SIZE *size)
static void	TEXT_SkipChars (int *new_count, const WCHAR **new_str, int start_count, const WCHAR *start_str, int max, int n, int prefix)
static int	TEXT_Reprefix (const WCHAR *str, unsigned int ns, const ellipsis_data *pe)
static int	remainder_is_none_or_newline (int num_chars, const WCHAR *str)
static const WCHAR *	TEXT_NextLineW (HDC hdc, const WCHAR *str, int *count, WCHAR *dest, int *len, int width, DWORD format, SIZE *retsize, int last_line, WCHAR **p_retstr, int tabwidth, int *pprefix_offset, ellipsis_data *pellip)
static void	TEXT_DrawUnderscore (HDC hdc, int x, int y, const WCHAR *str, int offset, const RECT *rect)
INT WINAPI	DrawTextExWorker (HDC hdc, LPWSTR str, INT i_count, LPRECT rect, UINT flags, LPDRAWTEXTPARAMS dtp)

Variables
static const WCHAR	ELLIPSISW [] = {'.','.','.', 0}
static const WCHAR	KinsokuClassA []

Macro Definition Documentation

ALPHA_PREFIX

#define ALPHA_PREFIX   30 /* Win16: Alphabet prefix */

Definition at line 114 of file text.c.

assert

#define assert

(

e

)

((e) ? (void)0 : _font_assert(#e, __FILE__, __LINE__))

Definition at line 47 of file text.c.

BACK_SLASH

#define BACK_SLASH   '\\'

Definition at line 118 of file text.c.

CR

#define CR   13

Definition at line 111 of file text.c.

FORWARD_SLASH

#define FORWARD_SLASH   '/'

Definition at line 117 of file text.c.

KANA_PREFIX

#define KANA_PREFIX   31 /* Win16: Katakana prefix */

Definition at line 115 of file text.c.

LF

#define LF   10

Definition at line 110 of file text.c.

MAX_BUFFER

#define MAX_BUFFER   1024

Definition at line 1065 of file text.c.

PREFIX

#define PREFIX   38

Definition at line 113 of file text.c.

SPACE

#define SPACE   32

Definition at line 112 of file text.c.

TAB

#define TAB   9

Definition at line 109 of file text.c.

Typedef Documentation

ellipsis_data

typedef struct tag_ellipsis_data ellipsis_data

Function Documentation

_font_assert()

void _font_assert	(	const char *	msg,
		const char *	file,
		int	line
	)

Definition at line 54 of file text.c.

{
  /* Assertion failed at foo.c line 45: x<y */
  DbgPrint("Assertion failed at %s line %d: %s\n", file, line, msg);
#ifdef _WIN32K_
  ASSERT(FALSE);
#else
  ExitProcess(3);  
  for(;;); /* eliminate warning by mingw */
#endif
}

DrawTextExWorker()

INT WINAPI DrawTextExWorker	(	HDC	hdc,
		LPWSTR	str,
		INT	i_count,
		LPRECT	rect,
		UINT	flags,
		LPDRAWTEXTPARAMS	dtp
	)

Definition at line 1071 of file text.c.

{
    SIZE size;
    const WCHAR *strPtr;
    WCHAR *retstr, *p_retstr;
    size_t size_retstr;
    WCHAR line[MAX_BUFFER];
    int len, lh, count=i_count;
    TEXTMETRICW tm;
    int lmargin = 0, rmargin = 0;
    int x = rect->left, y = rect->top;
    int width = rect->right - rect->left;
    int max_width = 0;
    int last_line;
    int tabwidth /* to keep gcc happy */ = 0;
    int prefix_offset;
    ellipsis_data ellip;
    BOOL invert_y=FALSE;
 
    HRGN    hrgn = 0;
 
#ifdef _WIN32K_
    TRACE("%S, %d, %08x\n", str, count, flags);
#else
    TRACE("%s, %d, [%s] %08x\n", debugstr_wn (str, count), count,
        wine_dbgstr_rect(rect), flags);
#endif
    if (dtp) TRACE("Params: iTabLength=%d, iLeftMargin=%d, iRightMargin=%d\n",
          dtp->iTabLength, dtp->iLeftMargin, dtp->iRightMargin);
 
    if (!str) return 0;
 
    strPtr = str;
 
    if (flags & DT_SINGLELINE)
        flags &= ~DT_WORDBREAK;
#ifdef _WIN32K_
    GreGetTextMetricsW(hdc, &tm);
#else
    GetTextMetricsW(hdc, &tm);
#endif
    if (flags & DT_EXTERNALLEADING)
    lh = tm.tmHeight + tm.tmExternalLeading;
    else
    lh = tm.tmHeight;
 
    if (str[0] && count == 0)
        return lh;
 
    if (dtp && dtp->cbSize != sizeof(DRAWTEXTPARAMS))
        return 0;
#ifdef _WIN32K_
    if (GreGetGraphicsMode(hdc) == GM_COMPATIBLE)
    {
        SIZE window_ext, viewport_ext;
        GreGetWindowExtEx(hdc, &window_ext);
        GreGetViewportExtEx(hdc, &viewport_ext);
        if ((window_ext.cy > 0) != (viewport_ext.cy > 0))
            invert_y = TRUE;
    }
#else
    if (GetGraphicsMode(hdc) == GM_COMPATIBLE)
    {
        SIZE window_ext, viewport_ext;
        GetWindowExtEx(hdc, &window_ext);
        GetViewportExtEx(hdc, &viewport_ext);
        if ((window_ext.cy > 0) != (viewport_ext.cy > 0))
            invert_y = TRUE;
    }
#endif
    if (count == -1)
    {
#ifdef _WIN32K_
        count = wcslen(str);
#else
        count = strlenW(str);
#endif
        if (count == 0)
        {
            if( flags & DT_CALCRECT)
            {
                rect->right = rect->left;
                if( flags & DT_SINGLELINE)
                    rect->bottom = rect->top + (invert_y ? -lh : lh);
                else
                    rect->bottom = rect->top;
            }
            return lh;
        }
    }
 
    if (dtp)
    {
        lmargin = dtp->iLeftMargin;
        rmargin = dtp->iRightMargin;
        if (!(flags & (DT_CENTER | DT_RIGHT)))
            x += lmargin;
        dtp->uiLengthDrawn = 0;     /* This param RECEIVES number of chars processed */
    }
 
    if (flags & DT_EXPANDTABS)
    {
        int tabstop = ((flags & DT_TABSTOP) && dtp && dtp->iTabLength) ? dtp->iTabLength : 8;
    tabwidth = tm.tmAveCharWidth * tabstop;
    }
 
    if (flags & DT_CALCRECT) flags |= DT_NOCLIP;
#ifndef _WIN32K_ 
    if (!(flags & DT_NOCLIP) )
    {
       int hasClip;
       hrgn = CreateRectRgn(0,0,0,0);
       if (hrgn)
       {
          hasClip = GetClipRgn(hdc, hrgn);
          // If the region to be retrieved is NULL, the return value is 0.
          if (hasClip != 1)
          {
             DeleteObject(hrgn);
             hrgn = NULL;
          }
          IntersectClipRect(hdc, rect->left, rect->top, rect->right, rect->bottom);
       }
    }
#else
    if (!(flags & DT_NOCLIP) )
    {
       int hasClip;
       hrgn = NtGdiCreateRectRgn(0,0,0,0);
       if (hrgn)
       {
          hasClip = NtGdiGetRandomRgn(hdc, hrgn, CLIPRGN);
          if (hasClip != 1)
          {
             GreDeleteObject(hrgn);
             hrgn = NULL;
          }
          NtGdiIntersectClipRect(hdc, rect->left, rect->top, rect->right, rect->bottom);
       }
    }
#endif 
    if (flags & DT_MODIFYSTRING)
    {
        size_retstr = (count + 4) * sizeof (WCHAR);
#ifdef _WIN32K_
        retstr = ExAllocatePoolWithTag(PagedPool, size_retstr, USERTAG_RTL);
#else
        retstr = HeapAlloc(GetProcessHeap(), 0, size_retstr);
#endif
        if (!retstr) return 0;
        memcpy (retstr, str, size_retstr);
    }
    else
    {
        size_retstr = 0;
        retstr = NULL;
    }
    p_retstr = retstr;
 
    do
    {
    len = sizeof(line)/sizeof(line[0]);
    if (invert_y)
            last_line = !(flags & DT_NOCLIP) && y - ((flags & DT_EDITCONTROL) ? 2*lh-1 : lh) < rect->bottom;
    else
            last_line = !(flags & DT_NOCLIP) && y + ((flags & DT_EDITCONTROL) ? 2*lh-1 : lh) > rect->bottom;
    strPtr = TEXT_NextLineW(hdc, strPtr, &count, line, &len, width, flags, &size, last_line, &p_retstr, tabwidth, &prefix_offset, &ellip);
 
#ifdef __REACTOS__
    if (flags & DT_CENTER)
    {
        if (((rect->right - rect->left) < size.cx) && (flags & DT_CALCRECT))
        {
            x = rect->left + size.cx;
        }
        else
        {
            x = (rect->left + rect->right - size.cx) / 2;
        }
    }
#else
    if (flags & DT_CENTER) x = (rect->left + rect->right -
                    size.cx) / 2;
#endif
    else if (flags & DT_RIGHT) x = rect->right - size.cx;
 
    if (flags & DT_SINGLELINE)
    {
#ifdef __REACTOS__
        if (flags & DT_VCENTER) y = rect->top +
            (rect->bottom - rect->top + (invert_y ? size.cy : -size.cy)) / 2;
        else if (flags & DT_BOTTOM)
            y = rect->bottom + (invert_y ? size.cy : -size.cy);
#else
        if (flags & DT_VCENTER) y = rect->top +
            (rect->bottom - rect->top) / 2 - size.cy / 2;
        else if (flags & DT_BOTTOM) y = rect->bottom - size.cy;
#endif
    }
 
    if (!(flags & DT_CALCRECT))
    {
            const WCHAR *str = line;
            int xseg = x;
            while (len)
            {
                int len_seg;
                SIZE size;
                if ((flags & DT_EXPANDTABS))
                {
                    const WCHAR *p;
                    p = str; while (p < str+len && *p != TAB) p++;
                    len_seg = p - str;
                    if (len_seg != len &&
#ifdef _WIN32K_
                        !GreGetTextExtentW(hdc, str, len_seg, &size, 0))
#else
                        !GetTextExtentPointW(hdc, str, len_seg, &size))
#endif
                    {
#ifdef _WIN32K_
                        ExFreePoolWithTag(retstr, USERTAG_RTL);
#else
                        HeapFree (GetProcessHeap(), 0, retstr);
#endif
                        return 0;
                    }
                }
                else
                    len_seg = len;
#ifdef _WIN32K_
                if (!UserExtTextOutW( hdc, xseg, y,
                                     ((flags & DT_NOCLIP) ? 0 : ETO_CLIPPED) |
                                     ((flags & DT_RTLREADING) ? ETO_RTLREADING : 0),
                                     rect, str, len_seg))
#else
                if (!ExtTextOutW( hdc, xseg, y,
                                 ((flags & DT_NOCLIP) ? 0 : ETO_CLIPPED) |
                                 ((flags & DT_RTLREADING) ? ETO_RTLREADING : 0),
                                 rect, str, len_seg, NULL ))
#endif
                {
#ifdef _WIN32K_
                    ExFreePoolWithTag(retstr, USERTAG_RTL);
#else
                    HeapFree (GetProcessHeap(), 0, retstr);
#endif
                    return 0;
                }
                if (prefix_offset != -1 && prefix_offset < len_seg)
                {
                    TEXT_DrawUnderscore (hdc, xseg, y + tm.tmAscent + 1, str, prefix_offset, (flags & DT_NOCLIP) ? NULL : rect);
                }
                len -= len_seg;
                str += len_seg;
                if (len)
                {
                    assert ((flags & DT_EXPANDTABS) && *str == TAB);
                    len--; str++;
                    xseg += ((size.cx/tabwidth)+1)*tabwidth;
                    if (prefix_offset != -1)
                    {
                        if (prefix_offset < len_seg)
                        {
                            /* We have just drawn an underscore; we ought to
                             * figure out where the next one is.  I am going
                             * to leave it for now until I have a better model
                             * for the line, which will make reprefixing easier.
                             * This is where ellip would be used.
                             */
                            prefix_offset = -1;
                        }
                        else
                            prefix_offset -= len_seg;
                    }
                }
            }
    }
    else if (size.cx > max_width)
        max_width = size.cx;
 
        y += invert_y ? -lh : lh;
        if (dtp)
            dtp->uiLengthDrawn += len;
    }
    while (strPtr && !last_line);
 
#ifndef _WIN32K_
    if (!(flags & DT_NOCLIP) )
    {
       SelectClipRgn(hdc, hrgn); // This should be NtGdiExtSelectClipRgn, but due to ReactOS build rules this option is next:
       GdiFlush();               // Flush the batch and level up! See CORE-16498.
       if (hrgn)
       {
          DeleteObject(hrgn);
       }
    }
#else
    if (!(flags & DT_NOCLIP) )
    {
       NtGdiExtSelectClipRgn(hdc, hrgn, RGN_COPY);
       if (hrgn)
       {
          GreDeleteObject(hrgn);
       }
    }
#endif
 
    if (flags & DT_CALCRECT)
    {
    rect->right = rect->left + max_width;
    rect->bottom = y;
        if (dtp)
            rect->right += lmargin + rmargin;
    }
    if (retstr)
    {
        memcpy (str, retstr, size_retstr);
#ifdef _WIN32K_
        ExFreePoolWithTag(retstr, USERTAG_RTL);
#else
        HeapFree (GetProcessHeap(), 0, retstr);
#endif
    }
    return y - rect->top;
}

Referenced by DrawTextExW(), and DrawTextW().

IsCJKT()

FORCEINLINE BOOL IsCJKT

(

WCHAR

wch

)

Definition at line 335 of file text.c.

{
    if (0x0E00 <= wch && wch <= 0x0E7F)
        return TRUE;    /* Thai */
 
    if (0x3000 <= wch && wch <= 0x9FFF)
        return TRUE;    /* CJK */
 
    if (0xAC00 <= wch && wch <= 0xD7FF)
        return TRUE;    /* Korean */
 
    if (0xFF00 <= wch && wch <= 0xFFEF)
        return TRUE;    /* CJK */
 
    return FALSE;
}

Referenced by TEXT_WordBreak().

remainder_is_none_or_newline()

static int remainder_is_none_or_newline ( int  num_chars, const WCHAR *  str  )

static

Definition at line 626 of file text.c.

{
    if (!num_chars) return TRUE;
    if (*str != LF && *str != CR) return FALSE;
    if (!--num_chars) return TRUE;
    if (*str == *(str+1)) return FALSE;
    str++;
    if (*str != CR && *str != LF) return FALSE;
    if (--num_chars) return FALSE;
    return TRUE;
}

Referenced by TEXT_NextLineW().

TEXT_DrawUnderscore()

static void TEXT_DrawUnderscore ( HDC  hdc, int  x, int  y, const WCHAR *  str, int  offset, const RECT *  rect  )

static

Definition at line 894 of file text.c.

{
    int prefix_x;
    int prefix_end;
    SIZE size;
    HPEN hpen;
    HPEN oldPen;
#ifdef _WIN32K_
    GreGetTextExtentW (hdc, str, offset, &size, 0);
#else
    GetTextExtentPointW (hdc, str, offset, &size);
#endif
    prefix_x = x + size.cx;
#ifdef _WIN32K_
    GreGetTextExtentW (hdc, str, offset+1, &size, 0);
#else
    GetTextExtentPointW (hdc, str, offset+1, &size);
#endif
    prefix_end = x + size.cx - 1;
    /* The above method may eventually be slightly wrong due to kerning etc. */
 
    /* Check for clipping */
    if (rect)
    {
        if (prefix_x > rect->right || prefix_end < rect->left ||
            y < rect->top || y > rect->bottom)
            return; /* Completely outside */
        /* Partially outside */
        if (prefix_x   < rect->left ) prefix_x   = rect->left;
        if (prefix_end > rect->right) prefix_end = rect->right;
    }
#ifdef _WIN32K_
    hpen = NtGdiCreatePen (PS_SOLID, 1, GreGetTextColor (hdc), NULL);
    oldPen = NtGdiSelectPen (hdc, hpen);
    GreMoveTo (hdc, prefix_x, y, NULL);
    NtGdiLineTo (hdc, prefix_end, y);
    NtGdiSelectPen (hdc, oldPen);
    GreDeleteObject (hpen);
#else
    hpen = CreatePen (PS_SOLID, 1, GetTextColor (hdc));
    oldPen = SelectObject (hdc, hpen);
    MoveToEx (hdc, prefix_x, y, NULL);
    LineTo (hdc, prefix_end, y);
    SelectObject (hdc, oldPen);
    DeleteObject (hpen);
#endif
}

Referenced by DrawTextExWorker().

TEXT_Ellipsify()

static void TEXT_Ellipsify ( HDC  hdc, WCHAR *  str, unsigned int  max_len, unsigned int *  len_str, int  width, SIZE *  size, WCHAR *  modstr, int *  len_before, int *  len_ellip  )

static

Definition at line 159 of file text.c.

{
    unsigned int len_ellipsis;
    unsigned int lo, mid, hi;
    len_ellipsis = strlenW (ELLIPSISW);
    if (len_ellipsis > max_len) len_ellipsis = max_len;
    if (*len_str > max_len - len_ellipsis)
        *len_str = max_len - len_ellipsis;
 
    /* First do a quick binary search to get an upper bound for *len_str. */
    if (*len_str > 0 &&
#ifdef _WIN32K_
        GreGetTextExtentExW(hdc, str, *len_str, width, NULL, NULL, size, 0) &&
#else
        GetTextExtentExPointW(hdc, str, *len_str, width, NULL, NULL, size) &&
#endif
        size->cx > width)
    {
        for (lo = 0, hi = *len_str; lo < hi; )
        {
            mid = (lo + hi) / 2;
#ifdef _WIN32K_
            if (!GreGetTextExtentExW(hdc, str, mid, width, NULL, NULL, size, 0))
#else
            if (!GetTextExtentExPointW(hdc, str, mid, width, NULL, NULL, size))
#endif
                break;
            if (size->cx > width)
                hi = mid;
            else
                lo = mid + 1;
        }
        *len_str = hi;
    }
    /* Now this should take only a couple iterations at most. */
    for ( ; ; )
    {
        memcpy(str + *len_str, ELLIPSISW, len_ellipsis*sizeof(WCHAR));
#ifdef _WIN32K_
        if (!GreGetTextExtentExW (hdc, str, *len_str + len_ellipsis, width,
                                    NULL, NULL, size, 0)) break;
#else
        if (!GetTextExtentExPointW (hdc, str, *len_str + len_ellipsis, width,
                                    NULL, NULL, size)) break;
#endif
        if (!*len_str || size->cx <= width) break;
 
        (*len_str)--;
    }
    *len_ellip = len_ellipsis;
    *len_before = *len_str;
    *len_str += len_ellipsis;
 
    if (modstr)
    {
        memcpy (modstr, str, *len_str * sizeof(WCHAR));
        modstr[*len_str] = '\0';
    }
}

Referenced by TEXT_NextLineW().

TEXT_NextLineW()

static const WCHAR * TEXT_NextLineW ( HDC  hdc, const WCHAR *  str, int *  count, WCHAR *  dest, int *  len, int  width, DWORD  format, SIZE *  retsize, int  last_line, WCHAR **  p_retstr, int  tabwidth, int *  pprefix_offset, ellipsis_data *  pellip  )

static

Definition at line 666 of file text.c.

{
    int i = 0, j = 0;
    int plen = 0;
    SIZE size = {0, 0};
    int maxl = *len;
    int seg_i, seg_count, seg_j;
    int max_seg_width;
    int num_fit;
    int word_broken;
    int line_fits;
    unsigned int j_in_seg;
    int ellipsified;
    *pprefix_offset = -1;
 
    /* For each text segment in the line */
 
    retsize->cy = 0;
    while (*count)
    {
 
        /* Skip any leading tabs */
 
        if (str[i] == TAB && (format & DT_EXPANDTABS))
        {
            plen = ((plen/tabwidth)+1)*tabwidth;
            (*count)--; if (j < maxl) dest[j++] = str[i++]; else i++;
            while (*count && str[i] == TAB)
            {
                plen += tabwidth;
                (*count)--; if (j < maxl) dest[j++] = str[i++]; else i++;
            }
        }
 
 
        /* Now copy as far as the next tab or cr/lf or eos */
 
        seg_i = i;
        seg_count = *count;
        seg_j = j;
 
        while (*count &&
               (str[i] != TAB || !(format & DT_EXPANDTABS)) &&
               ((str[i] != CR && str[i] != LF) || (format & DT_SINGLELINE)))
        {
            if ((format & DT_NOPREFIX) || *count <= 1)
            {
                (*count)--; if (j < maxl) dest[j++] = str[i++]; else i++;
                continue;
            }
 
        if (str[i] == PREFIX || str[i] == ALPHA_PREFIX) {
                (*count)--, i++; /* Throw away the prefix itself */
                if (str[i] == PREFIX)
                {
                    /* Swallow it before we see it again */
            (*count)--; if (j < maxl) dest[j++] = str[i++]; else i++;
                }
        else if (*pprefix_offset == -1 || *pprefix_offset >= seg_j)
                {
                    *pprefix_offset = j;
                }
                /* else the previous prefix was in an earlier segment of the
                 * line; we will leave it to the drawing code to catch this
                 * one.
                 */
        }
        else if (str[i] == KANA_PREFIX)
            {
                /* Throw away katakana access keys */
                (*count)--, i++; /* skip the prefix */
                (*count)--, i++; /* skip the letter */
            }
            else
            {
                (*count)--; if (j < maxl) dest[j++] = str[i++]; else i++;
            }
        }
 
 
        /* Measure the whole text segment and possibly WordBreak and
         * ellipsify it
         */
 
        j_in_seg = j - seg_j;
        max_seg_width = width - plen;
#ifdef _WIN32K_
        GreGetTextExtentExW (hdc, dest + seg_j, j_in_seg, max_seg_width, (PULONG)&num_fit, NULL, &size, 0);
#else
        GetTextExtentExPointW (hdc, dest + seg_j, j_in_seg, max_seg_width, &num_fit, NULL, &size);
#endif
 
        /* The Microsoft handling of various combinations of formats is weird.
         * The following may very easily be incorrect if several formats are
         * combined, and may differ between versions (to say nothing of the
         * several bugs in the Microsoft versions).
         */
        word_broken = 0;
        line_fits = (num_fit >= j_in_seg);
        if (!line_fits && (format & DT_WORDBREAK))
        {
            const WCHAR *s;
            unsigned int chars_used;
            TEXT_WordBreak (hdc, dest+seg_j, maxl-seg_j, &j_in_seg,
                            max_seg_width, format, num_fit, &chars_used, &size);
            line_fits = (size.cx <= max_seg_width);
            /* and correct the counts */
            TEXT_SkipChars (count, &s, seg_count, str+seg_i, i-seg_i,
                            chars_used, !(format & DT_NOPREFIX));
            i = s - str;
            word_broken = 1;
        }
        pellip->before = j_in_seg;
        pellip->under = 0;
        pellip->after = 0;
        pellip->len = 0;
        ellipsified = 0;
        if (!line_fits && (format & DT_PATH_ELLIPSIS))
        {
            TEXT_PathEllipsify (hdc, dest + seg_j, maxl-seg_j, &j_in_seg,
                                max_seg_width, &size, *p_retstr, pellip);
            line_fits = (size.cx <= max_seg_width);
            ellipsified = 1;
        }
        /* NB we may end up ellipsifying a word-broken or path_ellipsified
         * string */
        if ((!line_fits && (format & DT_WORD_ELLIPSIS)) ||
            ((format & DT_END_ELLIPSIS) &&
              ((last_line && *count) ||
               (remainder_is_none_or_newline (*count, &str[i]) && !line_fits))))
        {
            int before, len_ellipsis;
            TEXT_Ellipsify (hdc, dest + seg_j, maxl-seg_j, &j_in_seg,
                            max_seg_width, &size, *p_retstr, &before, &len_ellipsis);
            if (before > pellip->before)
            {
                /* We must have done a path ellipsis too */
                pellip->after = before - pellip->before - pellip->len;
                /* Leave the len as the length of the first ellipsis */
            }
            else
            {
                /* If we are here after a path ellipsification it must be
                 * because even the ellipsis itself didn't fit.
                 */
                assert (pellip->under == 0 && pellip->after == 0);
                pellip->before = before;
                pellip->len = len_ellipsis;
                /* pellip->after remains as zero as does
                 * pellip->under
                 */
            }
            line_fits = (size.cx <= max_seg_width);
            ellipsified = 1;
        }
        /* As an optimisation if we have ellipsified and we are expanding
         * tabs and we haven't reached the end of the line we can skip to it
         * now rather than going around the loop again.
         */
        if ((format & DT_EXPANDTABS) && ellipsified)
        {
            if (format & DT_SINGLELINE)
                *count = 0;
            else
            {
                while ((*count) && str[i] != CR && str[i] != LF)
                {
                    (*count)--, i++;
                }
            }
        }
 
        j = seg_j + j_in_seg;
        if (*pprefix_offset >= seg_j + pellip->before)
        {
            *pprefix_offset = TEXT_Reprefix (str + seg_i, i - seg_i, pellip);
            if (*pprefix_offset != -1)
                *pprefix_offset += seg_j;
        }
 
        plen += size.cx;
        if (size.cy > retsize->cy)
            retsize->cy = size.cy;
 
        if (word_broken)
            break;
        else if (!*count)
            break;
        else if (str[i] == CR || str[i] == LF)
        {
            (*count)--, i++;
            if (*count && (str[i] == CR || str[i] == LF) && str[i] != str[i-1])
            {
                (*count)--, i++;
            }
            break;
        }
        /* else it was a Tab and we go around again */
    }
 
    retsize->cx = plen;
    *len = j;
    if (*count)
        return (&str[i]);
    else
        return NULL;
}

Referenced by DrawTextExWorker().

TEXT_PathEllipsify()

static void TEXT_PathEllipsify ( HDC  hdc, WCHAR *  str, unsigned int  max_len, unsigned int *  len_str, int  width, SIZE *  size, WCHAR *  modstr, ellipsis_data *  pellip  )

static

Definition at line 265 of file text.c.

{
    int len_ellipsis;
    int len_trailing;
    int len_under;
    WCHAR *lastBkSlash, *lastFwdSlash, *lastSlash;
    len_ellipsis = strlenW (ELLIPSISW);
    if (!max_len) return;
    if (len_ellipsis >= max_len) len_ellipsis = max_len - 1;
    if (*len_str + len_ellipsis >= max_len)
        *len_str = max_len - len_ellipsis-1;
        /* Hopefully this will never happen, otherwise it would probably lose
         * the wrong character
         */
    str[*len_str] = '\0'; /* to simplify things */
#ifdef _WIN32K_
    lastBkSlash  = wcsrchr (str, BACK_SLASH);
    lastFwdSlash = wcsrchr (str, FORWARD_SLASH);
#else
    lastBkSlash  = strrchrW (str, BACK_SLASH);
    lastFwdSlash = strrchrW (str, FORWARD_SLASH);
#endif
    lastSlash = lastBkSlash > lastFwdSlash ? lastBkSlash : lastFwdSlash;
    if (!lastSlash) lastSlash = str;
    len_trailing = *len_str - (lastSlash - str);
 
    /* overlap-safe movement to the right */
    memmove (lastSlash+len_ellipsis, lastSlash, len_trailing * sizeof(WCHAR));
    memcpy (lastSlash, ELLIPSISW, len_ellipsis*sizeof(WCHAR));
    len_trailing += len_ellipsis;
    /* From this point on lastSlash actually points to the ellipsis in front
     * of the last slash and len_trailing includes the ellipsis
     */
 
    len_under = 0;
    for ( ; ; )
    {
#ifdef _WIN32K_
        if (!GreGetTextExtentExW (hdc, str, *len_str + len_ellipsis, width,
                                    NULL, NULL, size, 0)) break;
#else
        if (!GetTextExtentExPointW (hdc, str, *len_str + len_ellipsis, width,
                                    NULL, NULL, size)) break;
#endif
        if (lastSlash == str || size->cx <= width) break;
 
        /* overlap-safe movement to the left */
        memmove (lastSlash-1, lastSlash, len_trailing * sizeof(WCHAR));
        lastSlash--;
        len_under++;
 
        assert (*len_str);
        (*len_str)--;
    }
    pellip->before = lastSlash-str;
    pellip->len = len_ellipsis;
    pellip->under = len_under;
    pellip->after = len_trailing - len_ellipsis;
    *len_str += len_ellipsis;
 
    if (modstr)
    {
        memcpy(modstr, str, *len_str * sizeof(WCHAR));
        modstr[*len_str] = '\0';
    }
}

Referenced by TEXT_NextLineW().

TEXT_Reprefix()

static int TEXT_Reprefix ( const WCHAR *  str, unsigned int  ns, const ellipsis_data *  pe  )

static

Definition at line 588 of file text.c.

{
    int result = -1;
    unsigned int i;
    unsigned int n = pe->before + pe->under + pe->after;
    assert (n <= ns);
    for (i = 0; i < n; i++, str++)
    {
        if (i == (unsigned int) pe->before)
        {
            /* Reached the path ellipsis; jump over it */
            if (ns < (unsigned int) pe->under) break;
            str += pe->under;
            ns -= pe->under;
            i += pe->under;
            if (!pe->after) break; /* Nothing after the path ellipsis */
        }
        if (!ns) break;
        ns--;
        if (*str++ == PREFIX || *str == ALPHA_PREFIX)
        {
            str++;
            if (!ns) break;
            if (*str != PREFIX)
                result = (i < (unsigned int) pe->before || pe->under == 0) ? i : i - pe->under + pe->len;
                /* pe->len may be non-zero while pe_under is zero */
            ns--;
        }
    }
    return result;
}

Referenced by TEXT_NextLineW().

TEXT_SkipChars()

static void TEXT_SkipChars ( int *  new_count, const WCHAR **  new_str, int  start_count, const WCHAR *  start_str, int  max, int  n, int  prefix  )

static

Definition at line 540 of file text.c.

{
    /* This is specific to wide characters, MSDN doesn't say anything much
     * about Unicode surrogates yet and it isn't clear if _wcsinc will
     * correctly handle them so we'll just do this the easy way for now
     */
 
    if (prefix)
    {
        const WCHAR *str_on_entry = start_str;
        assert (max >= n);
        max -= n;
        while (n--)
        {
            if ((*start_str == PREFIX || *start_str == ALPHA_PREFIX) && max--)
                start_str++;
            start_str++;
        }
        start_count -= (start_str - str_on_entry);
    }
    else
    {
        start_str += n;
        start_count -= n;
    }
    *new_str = start_str;
    *new_count = start_count;
}

Referenced by TEXT_NextLineW().

TEXT_WordBreak()

static void TEXT_WordBreak ( HDC  hdc, WCHAR *  str, unsigned int  max_str, unsigned int *  len_str, int  width, int  format, unsigned int  chars_fit, unsigned int *  chars_used, SIZE *  size  )

static

Definition at line 426 of file text.c.

{
    WCHAR *p;
    int word_fits;
    assert (format & DT_WORDBREAK);
    assert (chars_fit < *len_str);
 
    /* Work back from the last character that did fit to either a space or the
     * last character of a word, whichever is met first.
     */
    p = str + chars_fit; /* The character that doesn't fit */
    word_fits = TRUE;
    if (!chars_fit)
        word_fits = FALSE;
    else if (*p == SPACE) /* chars_fit < *len_str so this is valid */
        p--; /* the word just fitted */
    else
    {
        while (p > str && *(--p) != SPACE && (!IsCJKT(p[1]) || 
                p[1] == L'\0' || wcschr(KinsokuClassA, p[1]) != NULL))
            ;
        word_fits = (p != str || *p == SPACE || IsCJKT(p[1]));
    }
    /* If there was one. */
    if (word_fits)
    {
        int next_is_space;
        /* break the line before/after that character */
        if (!(format & (DT_RIGHT | DT_CENTER)) || *p != SPACE)
            p++;
        next_is_space = (unsigned int) (p - str) < *len_str && *p == SPACE;
        *len_str = p - str;
        /* and if the next character is a space then discard it. */
        *chars_used = *len_str;
        if (next_is_space)
            (*chars_used)++;
    }
    /* Suppose there was none. */
    else
    {
        if ((format & (DT_EDITCONTROL | DT_WORD_ELLIPSIS | DT_PATH_ELLIPSIS)) ==
            DT_EDITCONTROL)
        {
            /* break the word after the last character that fits (there must be
             * at least one). */
            if (!chars_fit)
                ++chars_fit;
            *len_str = chars_fit;
            *chars_used = chars_fit;
 
            /* FIXME - possible error.  Since the next character is now removed
             * this could make the text longer so that it no longer fits, and
             * so we need a loop to test and shrink.
             */
        }
        /* Otherwise */
        else
        {
            /* discard any trailing space. */
            const WCHAR *e = str + *len_str;
            p = str + chars_fit;
            while (p < e && *p != SPACE)
                p++;
            *chars_used = p - str;
            if (p < e) /* i.e. loop failed because *p == SPACE */
                (*chars_used)++;
 
            /* include the whole word; it may be ellipsified later */
            *len_str = p - str;
            /* Possible optimisation; if DT_WORD_ELLIPSIS only use chars_fit+1
             * so that it will be too long
             */
        }
    }
    /* Remeasure the string */
#ifdef _WIN32K_
    GreGetTextExtentExW (hdc, str, *len_str, 0, NULL, NULL, size, 0);
#else
    GetTextExtentExPointW (hdc, str, *len_str, 0, NULL, NULL, size);
#endif
}

Referenced by TEXT_NextLineW().

WINE_DEFAULT_DEBUG_CHANNEL()

WINE_DEFAULT_DEBUG_CHANNEL

(

text

)

Variable Documentation

ELLIPSISW

const WCHAR ELLIPSISW[] = {'.','.','.', 0}

static

Definition at line 120 of file text.c.

Referenced by TEXT_Ellipsify(), and TEXT_PathEllipsify().

KinsokuClassA

const WCHAR KinsokuClassA[]

static

Initial value:

=
{
    0x2010, 0x2013, 0x2019, 0x201D, 0x203C, 0x2047, 0x2048, 0x2049, 0x3001, 
    0x3002, 0x3005, 0x3009, 0x300B, 0x300D, 0x300F, 0x3011, 0x3015, 0x3017, 
    0x3019, 0x301C, 0x301F, 0x303B, 0x3041, 0x3043, 0x3045, 0x3047, 0x3049, 
    0x3063, 0x3083, 0x3085, 0x3087, 0x308E, 0x3095, 0x3096, 0x30A0, 0x30A1, 
    0x30A3, 0x30A5, 0x30A7, 0x30A9, 0x30C3, 0x30E3, 0x30E5, 0x30E7, 0x30EE, 
    0x30F5, 0x30F6, 0x30FB, 0x30FC, 0x30FD, 0x30FE, 0x31F0, 0x31F1, 0x31F2, 
    0x31F3, 0x31F4, 0x31F5, 0x31F6, 0x31F7, 0x31F8, 0x31F9, 0x31FA, 0x31FB, 
    0x31FC, 0x31FD, 0x31FE, 0x31FF, 0xFF01, 0xFF09, 0xFF0C, 0xFF0E, 0xFF1A, 
    0xFF1B, 0xFF1F, 0xFF3D, 0xFF5D, 0xFF60, 0
}

Definition at line 353 of file text.c.

Referenced by TEXT_WordBreak().