1160 lines
37 KiB
C
1160 lines
37 KiB
C
/*
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* USER text functions
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*
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* Copyright 1993, 1994 Alexandre Julliard
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*
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* Contains
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* 1. DrawText functions
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* 2. GrayString functions
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* 3. TabbedText functions
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*/
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#include <string.h>
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#include <assert.h>
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#include "windef.h"
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#include "wingdi.h"
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#include "wine/winuser16.h"
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#include "wine/unicode.h"
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#include "winbase.h"
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#include "winerror.h"
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#include "winnls.h"
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#include "user.h"
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#include "debugtools.h"
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DEFAULT_DEBUG_CHANNEL(text);
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#define countof(a) (sizeof(a)/sizeof(a[0]))
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/*********************************************************************
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*
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* DrawText functions
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*
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* Design issues
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* How many buffers to use
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* While processing in DrawText there are potentially three different forms
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* of the text that need to be held. How are they best held?
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* 1. The original text is needed, of course, to see what to display.
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* 2. The text that will be returned to the user if the DT_MODIFYSTRING is
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* in effect.
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* 3. The buffered text that is about to be displayed e.g. the current line.
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* Typically this will exclude the ampersands used for prefixing etc.
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*
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* Complications.
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* a. If the buffered text to be displayed includes the ampersands then
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* we will need special measurement and draw functions that will ignore
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* the ampersands (e.g. by copying to a buffer without the prefix and
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* then using the normal forms). This may involve less space but may
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* require more processing. e.g. since a line containing tabs may
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* contain several underlined characters either we need to carry around
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* a list of prefix locations or we may need to locate them several
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* times.
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* b. If we actually directly modify the "original text" as we go then we
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* will need some special "caching" to handle the fact that when we
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* ellipsify the text the ellipsis may modify the next line of text,
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* which we have not yet processed. (e.g. ellipsification of a W at the
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* end of a line will overwrite the W, the \n and the first character of
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* the next line, and a \0 will overwrite the second. Try it!!)
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*
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* Option 1. Three separate storages. (To be implemented)
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* If DT_MODIFYSTRING is in effect then allocate an extra buffer to hold
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* the edited string in some form, either as the string itself or as some
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* sort of "edit list" to be applied just before returning.
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* Use a buffer that holds the ellipsified current line sans ampersands
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* and accept the need occasionally to recalculate the prefixes (if
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* DT_EXPANDTABS and not DT_NOPREFIX and not DT_HIDEPREFIX)
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*/
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#define TAB 9
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#define LF 10
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#define CR 13
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#define SPACE 32
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#define PREFIX 38
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#define FORWARD_SLASH '/'
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#define BACK_SLASH '\\'
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static const WCHAR ELLIPSISW[] = {'.','.','.', 0};
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static int tabwidth;
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static int prefix_offset;
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/*********************************************************************
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* TEXT_Ellipsify (static)
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*
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* Add an ellipsis to the end of the given string whilst ensuring it fits.
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*
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* If the ellipsis alone doesn't fit then it will be returned anyway.
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*
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* See Also TEXT_PathEllipsify
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*
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* Arguments
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* hdc [in] The handle to the DC that defines the font.
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* str [in/out] The string that needs to be modified.
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* max_str [in] The dimension of str (number of WCHAR).
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* len_str [in/out] The number of characters in str
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* width [in] The maximum width permitted (in logical coordinates)
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* size [out] The dimensions of the text
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* modstr [out] The modified form of the string, to be returned to the
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* calling program. It is assumed that the caller has
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* made sufficient space available so we don't need to
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* know the size of the space. This pointer may be NULL if
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* the modified string is not required.
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* len_before [out] The number of characters before the ellipsis.
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* len_ellip [out] The number of characters in the ellipsis.
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*
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* See for example Microsoft article Q249678.
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*
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* For now we will simply use three dots rather than worrying about whether
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* the font contains an explicit ellipsis character.
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*/
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static void TEXT_Ellipsify (HDC hdc, WCHAR *str, unsigned int max_len,
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unsigned int *len_str, int width, SIZE *size,
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WCHAR *modstr,
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int *len_before, int *len_ellip)
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{
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unsigned int len_ellipsis;
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len_ellipsis = strlenW (ELLIPSISW);
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if (len_ellipsis > max_len) len_ellipsis = max_len;
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if (*len_str > max_len - len_ellipsis)
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*len_str = max_len - len_ellipsis;
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for ( ; ; )
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{
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strncpyW (str + *len_str, ELLIPSISW, len_ellipsis);
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if (!GetTextExtentExPointW (hdc, str, *len_str + len_ellipsis, width,
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NULL, NULL, size)) break;
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if (!*len_str || size->cx <= width) break;
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(*len_str)--;
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}
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*len_ellip = len_ellipsis;
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*len_before = *len_str;
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*len_str += len_ellipsis;
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if (modstr)
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{
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strncpyW (modstr, str, *len_str);
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*(str+*len_str) = '\0';
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}
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}
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/*********************************************************************
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* TEXT_PathEllipsify (static)
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*
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* Add an ellipsis to the provided string in order to make it fit within
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* the width. The ellipsis is added as specified for the DT_PATH_ELLIPSIS
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* flag.
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*
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* See Also TEXT_Ellipsify
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*
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* Arguments
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* hdc [in] The handle to the DC that defines the font.
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* str [in/out] The string that needs to be modified
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* max_str [in] The dimension of str (number of WCHAR).
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* len_str [in/out] The number of characters in str
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* width [in] The maximum width permitted (in logical coordinates)
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* size [out] The dimensions of the text
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* modstr [out] The modified form of the string, to be returned to the
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* calling program. It is assumed that the caller has
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* made sufficient space available so we don't need to
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* know the size of the space. This pointer may be NULL if
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* the modified string is not required.
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* len_before [out] The number of characters before the ellipsis.
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* len_ellip [out] The number of characters in the ellipsis.
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* len_after [out] The number of characters after the ellipsis.
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*
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* For now we will simply use three dots rather than worrying about whether
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* the font contains an explicit ellipsis character.
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*
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* The following applies, I think to Win95. We will need to extend it for
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* Win98 which can have both path and end ellipsis at the same time (e.g.
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* C:\MyLongFileName.Txt becomes ...\MyLongFileN...)
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*
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* The resulting string consists of as much as possible of the following:
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* 1. The ellipsis itself
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* 2. The last \ or / of the string (if any)
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* 3. Everything after the last \ or / of the string (if any) or the whole
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* string if there is no / or \. I believe that under Win95 this would
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* include everything even though some might be clipped off the end whereas
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* under Win98 that might be ellipsified too. (Not yet implemented). Yet
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* to be investigated is whether this would include wordbreaking if the
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* filename is more than 1 word and splitting if DT_EDITCONTROL was in
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* effect. (If DT_EDITCONTROL is in effect then on occasions text will be
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* broken within words).
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* 4. All the stuff before the / or \, which is placed before the ellipsis.
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*/
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static void TEXT_PathEllipsify (HDC hdc, WCHAR *str, unsigned int max_len,
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unsigned int *len_str, int width, SIZE *size,
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WCHAR *modstr,
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int *len_before, int *len_ellip, int *len_after)
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{
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int len_ellipsis;
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int len_trailing;
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WCHAR *lastBkSlash, *lastFwdSlash, *lastSlash;
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len_ellipsis = strlenW (ELLIPSISW);
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if (!max_len) return;
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if (len_ellipsis >= max_len) len_ellipsis = max_len - 1;
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if (*len_str + len_ellipsis >= max_len)
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*len_str = max_len - len_ellipsis-1;
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/* Hopefully this will never happen, otherwise it would probably lose
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* the wrong character
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*/
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str[*len_str] = '\0'; /* to simplify things */
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lastBkSlash = strrchrW (str, BACK_SLASH);
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lastFwdSlash = strrchrW (str, FORWARD_SLASH);
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lastSlash = lastBkSlash > lastFwdSlash ? lastBkSlash : lastFwdSlash;
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if (!lastSlash) lastSlash = str;
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len_trailing = *len_str - (lastSlash - str);
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/* overlap-safe movement to the right */
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memmove (lastSlash+len_ellipsis, lastSlash, len_trailing * sizeof(WCHAR));
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strncpyW (lastSlash, ELLIPSISW, len_ellipsis);
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len_trailing += len_ellipsis;
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/* From this point on lastSlash actually points to the ellipsis in front
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* of the last slash and len_trailing includes the ellipsis
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*/
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for ( ; ; )
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{
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if (!GetTextExtentExPointW (hdc, str, *len_str + len_ellipsis, width,
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NULL, NULL, size)) break;
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if (lastSlash == str || size->cx <= width) break;
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/* overlap-safe movement to the left */
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memmove (lastSlash-1, lastSlash, len_trailing * sizeof(WCHAR));
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lastSlash--;
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assert (*len_str);
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(*len_str)--;
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}
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*len_before = lastSlash-str;
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*len_ellip = len_ellipsis;
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*len_after = len_trailing - len_ellipsis;
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*len_str += len_ellipsis;
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if (modstr)
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{
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strncpyW (modstr, str, *len_str);
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*(str+*len_str) = '\0';
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}
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}
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void TEXT_CopySansPrefix (int noprefix, WCHAR *d, int *len_d, const WCHAR *s, int len_s)
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{
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if (noprefix)
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{
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strncpyW (d, s, len_s);
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*len_d = len_s;
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}
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else
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{
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*len_d = 0;
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while (len_s--)
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{
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if (*s == PREFIX && len_s)
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{
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len_s--;
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s++;
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}
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*d++ = *s++;
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(*len_d)++;
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}
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}
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}
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/*********************************************************************
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* TEXT_Reprefix
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*
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* Reanalyse the text to find the prefixed character. This is called when
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* wordbreaking or ellipsification has shortened the string such that the
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* previously noted prefixed character is no longer visible.
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*
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* Parameters
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* str [in] The original string segment (including all characters)
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* n1 [in] The number of characters visible before the path ellipsis
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* n2 [in] The number of characters replaced by the path ellipsis
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* ne [in] The number of characters in the path ellipsis, ignored if
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* n2 is zero
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* n3 [in] The number of characters visible after the path ellipsis
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*
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* Return Values
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* The prefix offset within the new string segment (the one that contains the
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* ellipses and does not contain the prefix characters) (-1 if none)
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*
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* Remarks
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* We know that n1+n2+n3 must be strictly less than the length of the segment
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* (because otherwise there would be no need to call this function)
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*/
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static int TEXT_Reprefix (const WCHAR *str, unsigned int n1, unsigned int n2,
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unsigned int ne, unsigned int n3)
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{
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int result = -1;
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unsigned int i = 0;
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unsigned int n = n1 + n2 + n3;
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if (!n2) ne = 0;
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while (i < n)
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{
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if (i == n1)
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{
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/* Reached the path ellipsis; jump over it */
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str += n2;
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i += n2;
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if (!n3) break; /* Nothing after the path ellipsis */
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}
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if (*str++ == PREFIX)
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{
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result = (i < n1) ? i : i - n2 + ne;
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str++;
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}
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else;
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i++;
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}
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return result;
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}
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/*********************************************************************
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* Return next line of text from a string.
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*
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* hdc - handle to DC.
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* str - string to parse into lines.
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* count - length of str.
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* dest - destination in which to return line.
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* len - dest buffer size in chars on input, copied length into dest on output.
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* width - maximum width of line in pixels.
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* format - format type passed to DrawText.
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*
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* Returns pointer to next char in str after end of the line
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* or NULL if end of str reached.
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*
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*/
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static const WCHAR *TEXT_NextLineW( HDC hdc, const WCHAR *str, int *count,
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WCHAR *dest, int *len, int width, WORD format)
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{
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int i = 0, j = 0;
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int plen = 0;
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int seg_plen; /* plen at the beginning of the current text segment */
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SIZE size;
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int wb_i = 0, wb_j = 0, wb_count = 0;
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int maxl = *len;
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int normal_char;
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int seg_j; /* j at the beginning of the current text segment */
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seg_j = j;
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seg_plen = plen;
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while (*count && j < maxl)
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{
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normal_char = 1;
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switch (str[i])
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{
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case CR:
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case LF:
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if (!(format & DT_SINGLELINE))
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{
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if ((*count > 1) && (((str[i] == CR) && (str[i+1] == LF)) ||
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((str[i] == LF) && (str[i+1] == CR))))
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{
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(*count)--;
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i++;
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}
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i++;
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*len = j;
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(*count)--;
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return (&str[i]);
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}
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/* else it's just another character */
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break;
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case PREFIX:
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if (!(format & DT_NOPREFIX) && *count > 1)
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{
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if (str[++i] == PREFIX)
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(*count)--; /* and treat it as just another character */
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else {
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prefix_offset = j;
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normal_char = 0; /* we are skipping the PREFIX itself */
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break;
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}
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}
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break;
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case TAB:
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if (format & DT_EXPANDTABS)
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{
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if ((format & DT_WORDBREAK))
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{
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wb_i = i+1;
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wb_j = j;
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wb_count = *count;
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plen = ((plen/tabwidth)+1)*tabwidth;
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seg_plen = plen;
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}
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normal_char = 0;
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dest[j++] = str[i++];
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seg_j = j;
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}
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break;
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case SPACE:
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if ((format & DT_WORDBREAK))
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{
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wb_i = i+1;
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wb_j = j;
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wb_count = *count;
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}
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break;
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default:
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}
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if (normal_char)
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{
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dest[j++] = str[i++];
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if ((format & DT_WORDBREAK))
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{
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if (!GetTextExtentPointW(hdc, &dest[seg_j], j-seg_j, &size))
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return NULL;
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plen = seg_plen + size.cx;
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}
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}
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(*count)--;
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if ((format & DT_WORDBREAK) && plen > width && wb_j)
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{
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*len = wb_j;
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*count = wb_count - 1;
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return (&str[wb_i]);
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}
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}
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*len = j;
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return NULL;
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}
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/***********************************************************************
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* TEXT_DrawUnderscore
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*
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* Draw the underline under the prefixed character
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*
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* Parameters
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* hdc [in] The handle of the DC for drawing
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* x [in] The x location of the line segment (logical coordinates)
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* y [in] The y location of where the underscore should appear
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* (logical coordinates)
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* str [in] The text of the line segment
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* offset [in] The offset of the underscored character within str
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*/
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static void TEXT_DrawUnderscore (HDC hdc, int x, int y, const WCHAR *str, int offset)
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{
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int prefix_x;
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int prefix_end;
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SIZE size;
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HPEN hpen;
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HPEN oldPen;
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GetTextExtentPointW (hdc, str, offset, &size);
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prefix_x = x + size.cx;
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GetTextExtentPointW (hdc, str, offset+1, &size);
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prefix_end = x + size.cx - 1;
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/* The above method may eventually be slightly wrong due to kerning etc. */
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hpen = CreatePen (PS_SOLID, 1, GetTextColor (hdc));
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oldPen = SelectObject (hdc, hpen);
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MoveToEx (hdc, prefix_x, y, NULL);
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LineTo (hdc, prefix_end, y);
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SelectObject (hdc, oldPen);
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DeleteObject (hpen);
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}
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/* We are only going to need this until we correct the measuring in
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* TEXT_NextLineW (coming soon)
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*/
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static int TEXT_TextExtent (HDC hdc, UINT flags, const WCHAR *line, int len, SIZE *size)
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{
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if ((flags & DT_EXPANDTABS))
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{
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SIZE tsize;
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const WCHAR *p;
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size->cx = 0;
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size->cy = 0;
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while (len)
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{
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p = line; while (p < line+len && *p != TAB) p++;
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if (!GetTextExtentPointW (hdc, line, p-line, &tsize)) return 0;
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size->cx += tsize.cx;
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if (tsize.cy > size->cy) size->cy = tsize.cy;
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len -= (p-line);
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line=p;
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if (len)
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{
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assert (*line == TAB);
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len--;
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line++;
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size->cx = ((size->cx/tabwidth)+1)*tabwidth;
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}
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}
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return 1;
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}
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else
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return GetTextExtentPointW(hdc, line, len, size);
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}
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|
|
/***********************************************************************
|
|
* DrawTextExW (USER32.@)
|
|
*
|
|
* The documentation on the extra space required for DT_MODIFYSTRING at MSDN
|
|
* is not quite complete, especially with regard to \0. We will assume that
|
|
* the returned string could have a length of up to i_count+3 and also have
|
|
* a trailing \0 (which would be 4 more than a not-null-terminated string but
|
|
* 3 more than a null-terminated string). If this is not so then increase
|
|
* the allowance in DrawTextExA.
|
|
*/
|
|
#define MAX_STATIC_BUFFER 1024
|
|
INT WINAPI DrawTextExW( HDC hdc, LPWSTR str, INT i_count,
|
|
LPRECT rect, UINT flags, LPDRAWTEXTPARAMS dtp )
|
|
{
|
|
SIZE size;
|
|
const WCHAR *strPtr;
|
|
static WCHAR line[MAX_STATIC_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;
|
|
|
|
TRACE("%s, %d , [(%d,%d),(%d,%d)]\n", debugstr_wn (str, count), count,
|
|
rect->left, rect->top, rect->right, rect->bottom);
|
|
|
|
if (dtp) TRACE("Params: iTabLength=%d, iLeftMargin=%d, iRightMargin=%d\n",
|
|
dtp->iTabLength, dtp->iLeftMargin, dtp->iRightMargin);
|
|
|
|
if (!str) return 0;
|
|
if (count == -1) count = strlenW(str);
|
|
if (count == 0) return 0;
|
|
strPtr = str;
|
|
|
|
if (flags & DT_SINGLELINE)
|
|
flags &= ~DT_WORDBREAK;
|
|
|
|
GetTextMetricsW(hdc, &tm);
|
|
if (flags & DT_EXTERNALLEADING)
|
|
lh = tm.tmHeight + tm.tmExternalLeading;
|
|
else
|
|
lh = tm.tmHeight;
|
|
|
|
if (dtp)
|
|
{
|
|
lmargin = dtp->iLeftMargin * tm.tmAveCharWidth;
|
|
rmargin = dtp->iRightMargin * tm.tmAveCharWidth;
|
|
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 : 8;
|
|
tabwidth = tm.tmAveCharWidth * tabstop;
|
|
}
|
|
|
|
if (flags & DT_CALCRECT) flags |= DT_NOCLIP;
|
|
|
|
do
|
|
{
|
|
prefix_offset = -1;
|
|
len = MAX_STATIC_BUFFER;
|
|
strPtr = TEXT_NextLineW(hdc, strPtr, &count, line, &len, width, flags);
|
|
|
|
if (!TEXT_TextExtent(hdc, flags, 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_SINGLELINE) && size.cx > width &&
|
|
(flags & (DT_PATH_ELLIPSIS | DT_END_ELLIPSIS | DT_WORD_ELLIPSIS)))
|
|
{
|
|
WCHAR tmpstr[countof(line)];
|
|
int len_before_ellipsis;
|
|
int len_ellipsis;
|
|
int len_after_ellipsis;
|
|
|
|
if ((flags & DT_EXPANDTABS))
|
|
{
|
|
/* If there are tabs then we must only ellipsify the last
|
|
* segment. That will become trivial when we move the
|
|
* ellipsification into the TEXT_NextLineW (coming soon)
|
|
*/
|
|
const WCHAR *p;
|
|
p = line + len;
|
|
while (p > line)
|
|
if (*(--p) == TAB)
|
|
{
|
|
FIXME ("Ellipsification of single line tabbed strings will be fixed shortly\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (flags & DT_PATH_ELLIPSIS)
|
|
{
|
|
/* We may need to remeasure the string because it was clipped */
|
|
if ((flags & DT_WORDBREAK) || !(flags & DT_NOCLIP))
|
|
TEXT_CopySansPrefix ((flags & DT_NOPREFIX), line, &len, str, i_count >= 0 ? i_count : strlenW(str));
|
|
TEXT_PathEllipsify (hdc, line, countof(line), &len, width, &size, tmpstr, &len_before_ellipsis, &len_ellipsis, &len_after_ellipsis);
|
|
}
|
|
else
|
|
{
|
|
TEXT_Ellipsify (hdc, line, countof(line), &len, width, &size, tmpstr, &len_before_ellipsis, &len_ellipsis);
|
|
len_after_ellipsis = 0;
|
|
}
|
|
|
|
strPtr = NULL;
|
|
|
|
if (prefix_offset >= 0 &&
|
|
prefix_offset >= len_before_ellipsis)
|
|
prefix_offset = TEXT_Reprefix (str, len_before_ellipsis, strlenW(str)-len_ellipsis-len_before_ellipsis-len_after_ellipsis, len_ellipsis, len_after_ellipsis);
|
|
|
|
if (flags & DT_MODIFYSTRING)
|
|
strcpyW(str, tmpstr);
|
|
|
|
|
|
}
|
|
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 && !GetTextExtentPointW(hdc, str, len_seg, &size))
|
|
return 0;
|
|
}
|
|
else
|
|
len_seg = len;
|
|
|
|
if (!ExtTextOutW( hdc, xseg, y,
|
|
((flags & DT_NOCLIP) ? 0 : ETO_CLIPPED) |
|
|
((flags & DT_RTLREADING) ? ETO_RTLREADING : 0),
|
|
rect, str, len_seg, NULL )) return 0;
|
|
if (prefix_offset != -1 && prefix_offset < len_seg)
|
|
{
|
|
TEXT_DrawUnderscore (hdc, xseg, y + tm.tmAscent + 1, str, prefix_offset);
|
|
}
|
|
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
|
|
*/
|
|
prefix_offset = -1;
|
|
}
|
|
else
|
|
prefix_offset -= len_seg;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if (size.cx > max_width)
|
|
max_width = size.cx;
|
|
|
|
y += lh;
|
|
if (strPtr)
|
|
{
|
|
if (!(flags & DT_NOCLIP))
|
|
{
|
|
if (y > rect->bottom - lh)
|
|
break;
|
|
}
|
|
}
|
|
if (dtp)
|
|
dtp->uiLengthDrawn += len;
|
|
}
|
|
while (strPtr);
|
|
|
|
if (flags & DT_CALCRECT)
|
|
{
|
|
rect->right = rect->left + max_width;
|
|
rect->bottom = y;
|
|
if (dtp)
|
|
rect->right += lmargin + rmargin;
|
|
}
|
|
return y - rect->top;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* DrawTextExA (USER32.@)
|
|
*
|
|
* If DT_MODIFYSTRING is specified then there must be room for up to
|
|
* 4 extra characters. We take great care about just how much modified
|
|
* string we return.
|
|
*/
|
|
INT WINAPI DrawTextExA( HDC hdc, LPSTR str, INT count,
|
|
LPRECT rect, UINT flags, LPDRAWTEXTPARAMS dtp )
|
|
{
|
|
WCHAR *wstr;
|
|
WCHAR *p;
|
|
INT ret = 0;
|
|
int i;
|
|
DWORD wcount;
|
|
DWORD wmax;
|
|
DWORD amax;
|
|
|
|
if (count == -1) count = strlen(str);
|
|
if (!count) return 0;
|
|
wcount = MultiByteToWideChar( CP_ACP, 0, str, count, NULL, 0 );
|
|
wmax = wcount;
|
|
amax = count;
|
|
if (flags & DT_MODIFYSTRING)
|
|
{
|
|
wmax += 4;
|
|
amax += 4;
|
|
}
|
|
wstr = HeapAlloc(GetProcessHeap(), 0, wmax * sizeof(WCHAR));
|
|
if (wstr)
|
|
{
|
|
MultiByteToWideChar( CP_ACP, 0, str, count, wstr, wcount );
|
|
if (flags & DT_MODIFYSTRING)
|
|
for (i=4, p=wstr+wcount; i--; p++) *p=0xFFFE;
|
|
/* Initialise the extra characters so that we can see which ones
|
|
* change. U+FFFE is guaranteed to be not a unicode character and
|
|
* so will not be generated by DrawTextEx itself.
|
|
*/
|
|
ret = DrawTextExW( hdc, wstr, wcount, rect, flags, NULL );
|
|
if (flags & DT_MODIFYSTRING)
|
|
{
|
|
/* Unfortunately the returned string may contain multiple \0s
|
|
* and so we need to measure it ourselves.
|
|
*/
|
|
for (i=4, p=wstr+wcount; i-- && *p != 0xFFFE; p++) wcount++;
|
|
WideCharToMultiByte( CP_ACP, 0, wstr, wcount, str, amax, NULL, NULL );
|
|
}
|
|
HeapFree(GetProcessHeap(), 0, wstr);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* DrawTextW (USER32.@)
|
|
*/
|
|
INT WINAPI DrawTextW( HDC hdc, LPCWSTR str, INT count, LPRECT rect, UINT flags )
|
|
{
|
|
DRAWTEXTPARAMS dtp;
|
|
|
|
memset (&dtp, 0, sizeof(dtp));
|
|
if (flags & DT_TABSTOP)
|
|
{
|
|
dtp.iTabLength = (flags >> 8) && 0xff;
|
|
flags &= 0xffff00ff;
|
|
}
|
|
return DrawTextExW(hdc, (LPWSTR)str, count, rect, flags, &dtp);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* DrawTextA (USER32.@)
|
|
*/
|
|
INT WINAPI DrawTextA( HDC hdc, LPCSTR str, INT count, LPRECT rect, UINT flags )
|
|
{
|
|
DRAWTEXTPARAMS dtp;
|
|
|
|
memset (&dtp, 0, sizeof(dtp));
|
|
if (flags & DT_TABSTOP)
|
|
{
|
|
dtp.iTabLength = (flags >> 8) && 0xff;
|
|
flags &= 0xffff00ff;
|
|
}
|
|
return DrawTextExA( hdc, (LPSTR)str, count, rect, flags, &dtp );
|
|
}
|
|
|
|
/***********************************************************************
|
|
* DrawText (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;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
*
|
|
* GrayString functions
|
|
*/
|
|
|
|
/* ### start build ### */
|
|
extern WORD CALLBACK TEXT_CallTo16_word_wlw(GRAYSTRINGPROC16,WORD,LONG,WORD);
|
|
/* ### stop build ### */
|
|
|
|
struct gray_string_info
|
|
{
|
|
GRAYSTRINGPROC16 proc;
|
|
LPARAM param;
|
|
};
|
|
|
|
/* callback for 16-bit gray string proc */
|
|
static BOOL CALLBACK gray_string_callback( HDC hdc, LPARAM param, INT len )
|
|
{
|
|
const struct gray_string_info *info = (struct gray_string_info *)param;
|
|
return TEXT_CallTo16_word_wlw( info->proc, hdc, info->param, len );
|
|
}
|
|
|
|
/***********************************************************************
|
|
* 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;
|
|
int slen = len;
|
|
BOOL retval = TRUE;
|
|
COLORREF fg, bg;
|
|
|
|
if(!hdc) return FALSE;
|
|
if (!(memdc = CreateCompatibleDC(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;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GrayString (USER.185)
|
|
*/
|
|
BOOL16 WINAPI GrayString16( HDC16 hdc, HBRUSH16 hbr, GRAYSTRINGPROC16 gsprc,
|
|
LPARAM lParam, INT16 cch, INT16 x, INT16 y,
|
|
INT16 cx, INT16 cy )
|
|
{
|
|
struct gray_string_info info;
|
|
|
|
if (!gsprc) return TEXT_GrayString(hdc, hbr, NULL, lParam, cch, x, y, cx, cy, FALSE, FALSE);
|
|
info.proc = gsprc;
|
|
info.param = lParam;
|
|
return TEXT_GrayString( hdc, hbr, gray_string_callback, (LPARAM)&info,
|
|
cch, x, y, cx, cy, FALSE, FALSE);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GrayStringA (USER32.@)
|
|
*/
|
|
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.@)
|
|
*/
|
|
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);
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* TabbedText functions
|
|
*/
|
|
|
|
/***********************************************************************
|
|
* 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);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* TabbedTextOut (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, debugstr_an(lpstr,count), count );
|
|
return TEXT_TabbedTextOut( hdc, x, y, lpstr, count, cTabStops,
|
|
lpTabPos, NULL, nTabOrg, TRUE );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* TabbedTextOutA (USER32.@)
|
|
*/
|
|
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, debugstr_an(lpstr,count), count );
|
|
return TEXT_TabbedTextOut( hdc, x, y, lpstr, count, cTabStops,
|
|
NULL, lpTabPos, nTabOrg, TRUE );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* TabbedTextOutW (USER32.@)
|
|
*/
|
|
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;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetTabbedTextExtent (USER.197)
|
|
*/
|
|
DWORD WINAPI GetTabbedTextExtent16( HDC16 hdc, LPCSTR lpstr, INT16 count,
|
|
INT16 cTabStops, const INT16 *lpTabPos )
|
|
{
|
|
TRACE("%04x %s %d\n", hdc, debugstr_an(lpstr,count), count );
|
|
return TEXT_TabbedTextOut( hdc, 0, 0, lpstr, count, cTabStops,
|
|
lpTabPos, NULL, 0, FALSE );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetTabbedTextExtentA (USER32.@)
|
|
*/
|
|
DWORD WINAPI GetTabbedTextExtentA( HDC hdc, LPCSTR lpstr, INT count,
|
|
INT cTabStops, const INT *lpTabPos )
|
|
{
|
|
TRACE("%04x %s %d\n", hdc, debugstr_an(lpstr,count), count );
|
|
return TEXT_TabbedTextOut( hdc, 0, 0, lpstr, count, cTabStops,
|
|
NULL, lpTabPos, 0, FALSE );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetTabbedTextExtentW (USER32.@)
|
|
*/
|
|
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;
|
|
}
|