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Sweden-Number/dlls/user/text.c

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/*
* USER text functions
*
* Copyright 1993, 1994 Alexandre Julliard
*
*/
#include <string.h>
#include "windef.h"
#include "wingdi.h"
#include "wine/winuser16.h"
#include "wine/unicode.h"
#include "winbase.h"
#include "winerror.h"
#include "winnls.h"
#include "cache.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(text);
#define TAB 9
#define LF 10
#define CR 13
#define SPACE 32
#define PREFIX 38
#define ELLIPSIS "..."
#define FORWARD_SLASH '/'
#define BACK_SLASH '\\'
static const WCHAR SPACEW[] = {' ', 0};
static const WCHAR oW[] = {'o', 0};
static const WCHAR ELLIPSISW[] = {'.','.','.', 0};
static const WCHAR FORWARD_SLASHW[] = {'/', 0};
static const WCHAR BACK_SLASHW[] = {'\\', 0};
#define SWAP_INT(a,b) { int t = a; a = b; b = t; }
static int tabstop = 8;
static int tabwidth;
static int spacewidth;
static int prefix_offset;
/*********************************************************************
* Return next line of text from a string.
*
* hdc - handle to DC.
* str - string to parse into lines.
* count - length of str.
* dest - destination in which to return line.
* len - length of resultant line in dest in chars.
* width - maximum width of line in pixels.
* format - format type passed to DrawText.
*
* Returns pointer to next char in str after end of the line
* or NULL if end of str reached.
*
* FIXME:
* GetTextExtentPoint is used to get the width of each character,
* rather than GetCharABCWidth... So the whitespace between
* characters is ignored, and the reported len is too great.
*/
static const WCHAR *TEXT_NextLineW( HDC hdc, const WCHAR *str, int *count,
WCHAR *dest, int *len, int width, WORD format)
{
int i = 0, j = 0, k;
int plen = 0;
int numspaces;
SIZE size;
int lasttab = 0;
int wb_i = 0, wb_j = 0, wb_count = 0;
while (*count)
{
switch (str[i])
{
case CR:
case LF:
if (!(format & DT_SINGLELINE))
{
if ((*count > 1) && (str[i] == CR) && (str[i+1] == LF))
{
(*count)--;
i++;
}
i++;
*len = j;
(*count)--;
return (&str[i]);
}
dest[j++] = str[i++];
if (!(format & DT_NOCLIP) || !(format & DT_NOPREFIX) ||
(format & DT_WORDBREAK))
{
if (!GetTextExtentPointW(hdc, &dest[j-1], 1, &size))
return NULL;
plen += size.cx;
}
break;
case PREFIX:
if (!(format & DT_NOPREFIX) && *count > 1)
{
if (str[++i] == PREFIX)
(*count)--;
else {
prefix_offset = j;
break;
}
}
dest[j++] = str[i++];
if (!(format & DT_NOCLIP) || !(format & DT_NOPREFIX) ||
(format & DT_WORDBREAK))
{
if (!GetTextExtentPointW(hdc, &dest[j-1], 1, &size))
return NULL;
plen += size.cx;
}
break;
case TAB:
if (format & DT_EXPANDTABS)
{
wb_i = ++i;
wb_j = j;
wb_count = *count;
if (!GetTextExtentPointW(hdc, &dest[lasttab], j - lasttab, &size))
return NULL;
numspaces = (tabwidth - size.cx) / spacewidth;
for (k = 0; k < numspaces; k++)
dest[j++] = SPACE;
plen += tabwidth - size.cx;
lasttab = wb_j + numspaces;
}
else
{
dest[j++] = str[i++];
if (!(format & DT_NOCLIP) || !(format & DT_NOPREFIX) ||
(format & DT_WORDBREAK))
{
if (!GetTextExtentPointW(hdc, &dest[j-1], 1, &size))
return NULL;
plen += size.cx;
}
}
break;
case SPACE:
dest[j++] = str[i++];
if (!(format & DT_NOCLIP) || !(format & DT_NOPREFIX) ||
(format & DT_WORDBREAK))
{
wb_i = i;
wb_j = j - 1;
wb_count = *count;
if (!GetTextExtentPointW(hdc, &dest[j-1], 1, &size))
return NULL;
plen += size.cx;
}
break;
default:
dest[j++] = str[i++];
if (!(format & DT_NOCLIP) || !(format & DT_NOPREFIX) ||
(format & DT_WORDBREAK))
{
if (!GetTextExtentPointW(hdc, &dest[j-1], 1, &size))
return NULL;
plen += size.cx;
}
}
(*count)--;
if (!(format & DT_NOCLIP) || (format & DT_WORDBREAK))
{
if (plen > width)
{
if (format & DT_WORDBREAK)
{
if (wb_j)
{
*len = wb_j;
*count = wb_count - 1;
return (&str[wb_i]);
}
}
else
{
*len = j;
return (&str[i]);
}
}
}
}
*len = j;
return NULL;
}
/***********************************************************************
* DrawText16 (USER.85)
*/
INT16 WINAPI DrawText16( HDC16 hdc, LPCSTR str, INT16 count, LPRECT16 rect, UINT16 flags )
{
INT16 ret;
if (rect)
{
RECT rect32;
CONV_RECT16TO32( rect, &rect32 );
ret = DrawTextA( hdc, str, count, &rect32, flags );
CONV_RECT32TO16( &rect32, rect );
}
else ret = DrawTextA( hdc, str, count, NULL, flags);
return ret;
}
/***********************************************************************
* DrawTextExW (USER32.166)
*/
INT WINAPI DrawTextExW( HDC hdc, LPCWSTR str, INT i_count,
LPRECT rect, UINT flags, LPDRAWTEXTPARAMS dtp )
{
SIZE size;
const WCHAR *strPtr;
static WCHAR line[1024];
int len, lh, count=i_count;
int prefix_x = 0;
int prefix_end = 0;
TEXTMETRICW tm;
int x = rect->left, y = rect->top;
int width = rect->right - rect->left;
int max_width = 0;
TRACE("%s, %d , [(%d,%d),(%d,%d)]\n", debugstr_wn (str, count), count,
rect->left, rect->top, rect->right, rect->bottom);
if(dtp) {
FIXME("Ignores params:%d,%d,%d,%d\n", dtp->cbSize,
dtp->iTabLength, dtp->iLeftMargin, dtp->iRightMargin);
}
if (!str) return 0;
if (count == -1) count = strlenW(str);
if (count == 0) return 0;
strPtr = str;
GetTextMetricsW(hdc, &tm);
if (flags & DT_EXTERNALLEADING)
lh = tm.tmHeight + tm.tmExternalLeading;
else
lh = tm.tmHeight;
if (flags & DT_TABSTOP)
tabstop = flags >> 8;
if (flags & DT_EXPANDTABS)
{
GetTextExtentPointW(hdc, SPACEW, 1, &size);
spacewidth = size.cx;
GetTextExtentPointW(hdc, oW, 1, &size);
tabwidth = size.cx * tabstop;
}
if (flags & DT_CALCRECT) flags |= DT_NOCLIP;
do
{
prefix_offset = -1;
strPtr = TEXT_NextLineW(hdc, strPtr, &count, line, &len, width, flags);
if (prefix_offset != -1)
{
GetTextExtentPointW(hdc, line, prefix_offset, &size);
prefix_x = size.cx;
GetTextExtentPointW(hdc, line, prefix_offset + 1, &size);
prefix_end = size.cx - 1;
}
if (!GetTextExtentPointW(hdc, line, len, &size)) return 0;
if (flags & DT_CENTER) x = (rect->left + rect->right -
size.cx) / 2;
else if (flags & DT_RIGHT) x = rect->right - size.cx;
if (flags & DT_SINGLELINE)
{
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;
if (flags & (DT_PATH_ELLIPSIS | DT_END_ELLIPSIS | DT_WORD_ELLIPSIS))
{
WCHAR swapStr[sizeof(line)];
WCHAR* fnameDelim = NULL;
int totalLen = i_count >= 0 ? i_count : strlenW(str);
if (size.cx > width)
{
int fnameLen = totalLen;
/* allow room for '...' */
count = min(totalLen+3, sizeof(line)-3);
if (flags & DT_WORD_ELLIPSIS)
flags |= DT_WORDBREAK;
if (flags & DT_PATH_ELLIPSIS)
{
WCHAR* lastBkSlash = NULL;
WCHAR* lastFwdSlash = NULL;
strncpyW(line, str, totalLen);
line[totalLen] = '\0';
lastBkSlash = strrchrW(line, BACK_SLASHW[0]);
lastFwdSlash = strrchrW(line, FORWARD_SLASHW[0]);
fnameDelim = lastFwdSlash ? lastFwdSlash : lastBkSlash;
if (lastBkSlash && lastFwdSlash) /* which is last? */
if (lastBkSlash > lastFwdSlash)
fnameDelim = lastBkSlash;
if (fnameDelim)
fnameLen = &line[totalLen] - fnameDelim;
else
fnameDelim = (WCHAR*)str;
strcpyW(swapStr, ELLIPSISW);
strncpyW(swapStr+strlenW(swapStr), fnameDelim, fnameLen);
swapStr[fnameLen+3] = '\0';
strncpyW(swapStr+strlenW(swapStr), str, totalLen - fnameLen);
swapStr[totalLen+3] = '\0';
}
else /* DT_END_ELLIPSIS | DT_WORD_ELLIPSIS */
{
strcpyW(swapStr, ELLIPSISW);
strncpyW(swapStr+strlenW(swapStr), str, totalLen);
}
TEXT_NextLineW(hdc, swapStr, &count, line, &len, width, flags);
/* if only the ELLIPSIS will fit, just let it be clipped */
len = max(3, len);
GetTextExtentPointW(hdc, line, len, &size);
/* FIXME:
* NextLine uses GetTextExtentPoint for each character,
* rather than GetCharABCWidth... So the whitespace between
* characters is ignored in the width measurement, and the
* reported len is too great. To compensate, we must get
* the width of the entire line and adjust len accordingly.
*/
while ((size.cx > width) && (len > 3))
{
line[--len] = '\0';
GetTextExtentPointW(hdc, line, len, &size);
}
if (fnameLen < len-3) /* some of the path will fit */
{
/* put the ELLIPSIS between the path and filename */
strncpyW(swapStr, &line[fnameLen+3], len-3-fnameLen);
swapStr[len-3-fnameLen] = '\0';
strcatW(swapStr, ELLIPSISW);
strncpyW(swapStr+strlenW(swapStr), &line[3], fnameLen);
}
else
{
/* move the ELLIPSIS to the end */
strncpyW(swapStr, &line[3], len-3);
swapStr[len-3] = '\0';
strcpyW(swapStr+strlenW(swapStr), ELLIPSISW);
}
strncpyW(line, swapStr, len);
line[len] = '\0';
strPtr = NULL;
}
}
}
if (!(flags & DT_CALCRECT))
{
if (!ExtTextOutW(hdc, x, y, (flags & DT_NOCLIP) ? 0 : ETO_CLIPPED,
rect, line, len, NULL )) return 0;
if (prefix_offset != -1)
{
HPEN hpen = CreatePen( PS_SOLID, 1, GetTextColor(hdc) );
HPEN oldPen = SelectObject( hdc, hpen );
MoveToEx(hdc, x + prefix_x, y + tm.tmAscent + 1, NULL );
LineTo(hdc, x + prefix_end + 1, y + tm.tmAscent + 1 );
SelectObject( hdc, oldPen );
DeleteObject( hpen );
}
}
else if (size.cx > max_width)
max_width = size.cx;
y += lh;
if (strPtr)
{
if (!(flags & DT_NOCLIP))
{
if (y > rect->bottom - lh)
break;
}
}
}
while (strPtr);
if (flags & DT_CALCRECT)
{
rect->right = rect->left + max_width;
rect->bottom = y;
}
return y - rect->top;
}
/***********************************************************************
* DrawTextA (USER32.164)
*/
INT WINAPI DrawTextA( HDC hdc, LPCSTR str, INT count, LPRECT rect, UINT flags )
{
WCHAR *wstr;
INT ret = 0;
DWORD wcount;
if (count == -1) count = strlen(str);
if (!count) return 0;
wcount = MultiByteToWideChar( CP_ACP, 0, str, count, NULL, 0 );
wstr = HeapAlloc(GetProcessHeap(), 0, wcount * sizeof(WCHAR));
if (wstr)
{
MultiByteToWideChar( CP_ACP, 0, str, count, wstr, wcount );
ret = DrawTextExW( hdc, wstr, wcount, rect, flags, NULL );
HeapFree(GetProcessHeap(), 0, wstr);
}
return ret;
}
/***********************************************************************
* DrawTextW (USER32.167)
*/
INT WINAPI DrawTextW( HDC hdc, LPCWSTR str, INT count,
LPRECT rect, UINT flags )
{
return DrawTextExW(hdc, str, count, rect, flags, NULL);
}
/***********************************************************************
* DrawTextExA (USER32.165)
*/
INT WINAPI DrawTextExA( HDC hdc, LPCSTR str, INT count,
LPRECT rect, UINT flags, LPDRAWTEXTPARAMS dtp )
{
TRACE("(%d,'%s',%d,%p,0x%08x,%p)\n",hdc,str,count,rect,flags,dtp);
if(dtp) {
FIXME("Ignores params:%d,%d,%d,%d\n",dtp->cbSize,
dtp->iTabLength,dtp->iLeftMargin,dtp->iRightMargin);
}
return DrawTextA(hdc,str,count,rect,flags);
}
/***********************************************************************
* TEXT_GrayString
*
* FIXME: The call to 16-bit code only works because the wine GDI is a 16-bit
* heap and we can guarantee that the handles fit in an INT16. We have to
* rethink the strategy once the migration to NT handles is complete.
* We are going to get a lot of code-duplication once this migration is
* completed...
*
*/
static BOOL TEXT_GrayString(HDC hdc, HBRUSH hb, GRAYSTRINGPROC fn, LPARAM lp, INT len,
INT x, INT y, INT cx, INT cy, BOOL unicode, BOOL _32bit)
{
HBITMAP hbm, hbmsave;
HBRUSH hbsave;
HFONT hfsave;
HDC memdc = CreateCompatibleDC(hdc);
int slen = len;
BOOL retval = TRUE;
COLORREF fg, bg;
if(!hdc) return FALSE;
if(len == 0)
{
if(unicode)
slen = lstrlenW((LPCWSTR)lp);
else if(_32bit)
slen = strlen((LPCSTR)lp);
else
slen = strlen(MapSL(lp));
}
if((cx == 0 || cy == 0) && slen != -1)
{
SIZE s;
if(unicode)
GetTextExtentPoint32W(hdc, (LPCWSTR)lp, slen, &s);
else if(_32bit)
GetTextExtentPoint32A(hdc, (LPCSTR)lp, slen, &s);
else
GetTextExtentPoint32A(hdc, MapSL(lp), slen, &s);
if(cx == 0) cx = s.cx;
if(cy == 0) cy = s.cy;
}
hbm = CreateBitmap(cx, cy, 1, 1, NULL);
hbmsave = (HBITMAP)SelectObject(memdc, hbm);
hbsave = SelectObject( memdc, GetStockObject(BLACK_BRUSH) );
PatBlt( memdc, 0, 0, cx, cy, PATCOPY );
SelectObject( memdc, hbsave );
SetTextColor(memdc, RGB(255, 255, 255));
SetBkColor(memdc, RGB(0, 0, 0));
hfsave = (HFONT)SelectObject(memdc, GetCurrentObject(hdc, OBJ_FONT));
if(fn)
{
if(_32bit)
retval = fn(memdc, lp, slen);
else
retval = (BOOL)((BOOL16)((GRAYSTRINGPROC16)fn)((HDC16)memdc, lp, (INT16)slen));
}
else
{
if(unicode)
TextOutW(memdc, 0, 0, (LPCWSTR)lp, slen);
else if(_32bit)
TextOutA(memdc, 0, 0, (LPCSTR)lp, slen);
else
TextOutA(memdc, 0, 0, MapSL(lp), slen);
}
SelectObject(memdc, hfsave);
/*
* Windows doc says that the bitmap isn't grayed when len == -1 and
* the callback function returns FALSE. However, testing this on
* win95 showed otherwise...
*/
#ifdef GRAYSTRING_USING_DOCUMENTED_BEHAVIOUR
if(retval || len != -1)
#endif
{
hbsave = (HBRUSH)SelectObject(memdc, CACHE_GetPattern55AABrush());
PatBlt(memdc, 0, 0, cx, cy, 0x000A0329);
SelectObject(memdc, hbsave);
}
if(hb) hbsave = (HBRUSH)SelectObject(hdc, hb);
fg = SetTextColor(hdc, RGB(0, 0, 0));
bg = SetBkColor(hdc, RGB(255, 255, 255));
BitBlt(hdc, x, y, cx, cy, memdc, 0, 0, 0x00E20746);
SetTextColor(hdc, fg);
SetBkColor(hdc, bg);
if(hb) SelectObject(hdc, hbsave);
SelectObject(memdc, hbmsave);
DeleteObject(hbm);
DeleteDC(memdc);
return retval;
}
/***********************************************************************
* GrayString16 (USER.185)
*/
BOOL16 WINAPI GrayString16( HDC16 hdc, HBRUSH16 hbr, GRAYSTRINGPROC16 gsprc,
LPARAM lParam, INT16 cch, INT16 x, INT16 y,
INT16 cx, INT16 cy )
{
return TEXT_GrayString(hdc, hbr, (GRAYSTRINGPROC)gsprc, lParam, cch,
x, y, cx, cy, FALSE, FALSE);
}
/***********************************************************************
* GrayStringA (USER32.315)
*/
BOOL WINAPI GrayStringA( HDC hdc, HBRUSH hbr, GRAYSTRINGPROC gsprc,
LPARAM lParam, INT cch, INT x, INT y,
INT cx, INT cy )
{
return TEXT_GrayString(hdc, hbr, gsprc, lParam, cch, x, y, cx, cy,
FALSE, TRUE);
}
/***********************************************************************
* GrayStringW (USER32.316)
*/
BOOL WINAPI GrayStringW( HDC hdc, HBRUSH hbr, GRAYSTRINGPROC gsprc,
LPARAM lParam, INT cch, INT x, INT y,
INT cx, INT cy )
{
return TEXT_GrayString(hdc, hbr, gsprc, lParam, cch, x, y, cx, cy,
TRUE, TRUE);
}
/***********************************************************************
* TEXT_TabbedTextOut
*
* Helper function for TabbedTextOut() and GetTabbedTextExtent().
* Note: this doesn't work too well for text-alignment modes other
* than TA_LEFT|TA_TOP. But we want bug-for-bug compatibility :-)
*/
static LONG TEXT_TabbedTextOut( HDC hdc, INT x, INT y, LPCSTR lpstr,
INT count, INT cTabStops, const INT16 *lpTabPos16,
const INT *lpTabPos32, INT nTabOrg,
BOOL fDisplayText )
{
INT defWidth;
SIZE extent;
int i, tabPos = x;
int start = x;
extent.cx = 0;
extent.cy = 0;
if (cTabStops == 1)
{
defWidth = lpTabPos32 ? *lpTabPos32 : *lpTabPos16;
cTabStops = 0;
}
else
{
TEXTMETRICA tm;
GetTextMetricsA( hdc, &tm );
defWidth = 8 * tm.tmAveCharWidth;
}
while (count > 0)
{
for (i = 0; i < count; i++)
if (lpstr[i] == '\t') break;
GetTextExtentPointA( hdc, lpstr, i, &extent );
if (lpTabPos32)
{
while ((cTabStops > 0) &&
(nTabOrg + *lpTabPos32 <= x + extent.cx))
{
lpTabPos32++;
cTabStops--;
}
}
else
{
while ((cTabStops > 0) &&
(nTabOrg + *lpTabPos16 <= x + extent.cx))
{
lpTabPos16++;
cTabStops--;
}
}
if (i == count)
tabPos = x + extent.cx;
else if (cTabStops > 0)
tabPos = nTabOrg + (lpTabPos32 ? *lpTabPos32 : *lpTabPos16);
else
tabPos = nTabOrg + ((x + extent.cx - nTabOrg) / defWidth + 1) * defWidth;
if (fDisplayText)
{
RECT r;
r.left = x;
r.top = y;
r.right = tabPos;
r.bottom = y + extent.cy;
ExtTextOutA( hdc, x, y,
GetBkMode(hdc) == OPAQUE ? ETO_OPAQUE : 0,
&r, lpstr, i, NULL );
}
x = tabPos;
count -= i+1;
lpstr += i+1;
}
return MAKELONG(tabPos - start, extent.cy);
}
/***********************************************************************
* TabbedTextOut16 (USER.196)
*/
LONG WINAPI TabbedTextOut16( HDC16 hdc, INT16 x, INT16 y, LPCSTR lpstr,
INT16 count, INT16 cTabStops,
const INT16 *lpTabPos, INT16 nTabOrg )
{
TRACE("%04x %d,%d '%.*s' %d\n", hdc, x, y, count, lpstr, count );
return TEXT_TabbedTextOut( hdc, x, y, lpstr, count, cTabStops,
lpTabPos, NULL, nTabOrg, TRUE );
}
/***********************************************************************
* TabbedTextOutA (USER32.542)
*/
LONG WINAPI TabbedTextOutA( HDC hdc, INT x, INT y, LPCSTR lpstr, INT count,
INT cTabStops, const INT *lpTabPos, INT nTabOrg )
{
TRACE("%04x %d,%d '%.*s' %d\n", hdc, x, y, count, lpstr, count );
return TEXT_TabbedTextOut( hdc, x, y, lpstr, count, cTabStops,
NULL, lpTabPos, nTabOrg, TRUE );
}
/***********************************************************************
* TabbedTextOutW (USER32.543)
*/
LONG WINAPI TabbedTextOutW( HDC hdc, INT x, INT y, LPCWSTR str, INT count,
INT cTabStops, const INT *lpTabPos, INT nTabOrg )
{
LONG ret;
LPSTR p;
INT acount;
UINT codepage = CP_ACP; /* FIXME: get codepage of font charset */
acount = WideCharToMultiByte(codepage,0,str,count,NULL,0,NULL,NULL);
p = HeapAlloc( GetProcessHeap(), 0, acount );
if(p == NULL) return 0; /* FIXME: is this the correct return on failure */
acount = WideCharToMultiByte(codepage,0,str,count,p,acount,NULL,NULL);
ret = TabbedTextOutA( hdc, x, y, p, acount, cTabStops, lpTabPos, nTabOrg );
HeapFree( GetProcessHeap(), 0, p );
return ret;
}
/***********************************************************************
* GetTabbedTextExtent16 (USER.197)
*/
DWORD WINAPI GetTabbedTextExtent16( HDC16 hdc, LPCSTR lpstr, INT16 count,
INT16 cTabStops, const INT16 *lpTabPos )
{
TRACE("%04x '%.*s' %d\n", hdc, count, lpstr, count );
return TEXT_TabbedTextOut( hdc, 0, 0, lpstr, count, cTabStops,
lpTabPos, NULL, 0, FALSE );
}
/***********************************************************************
* GetTabbedTextExtentA (USER32.293)
*/
DWORD WINAPI GetTabbedTextExtentA( HDC hdc, LPCSTR lpstr, INT count,
INT cTabStops, const INT *lpTabPos )
{
TRACE("%04x '%.*s' %d\n", hdc, count, lpstr, count );
return TEXT_TabbedTextOut( hdc, 0, 0, lpstr, count, cTabStops,
NULL, lpTabPos, 0, FALSE );
}
/***********************************************************************
* GetTabbedTextExtentW (USER32.294)
*/
DWORD WINAPI GetTabbedTextExtentW( HDC hdc, LPCWSTR lpstr, INT count,
INT cTabStops, const INT *lpTabPos )
{
LONG ret;
LPSTR p;
INT acount;
UINT codepage = CP_ACP; /* FIXME: get codepage of font charset */
acount = WideCharToMultiByte(codepage,0,lpstr,count,NULL,0,NULL,NULL);
p = HeapAlloc( GetProcessHeap(), 0, acount );
if(p == NULL) return 0; /* FIXME: is this the correct failure value? */
acount = WideCharToMultiByte(codepage,0,lpstr,count,p,acount,NULL,NULL);
ret = GetTabbedTextExtentA( hdc, p, acount, cTabStops, lpTabPos );
HeapFree( GetProcessHeap(), 0, p );
return ret;
}
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