| /* |
| * USER text functions |
| * |
| * Copyright 1993, 1994 Alexandre Julliard |
| * Copyright 2002 Bill Medland |
| * |
| * Contains |
| * 1. DrawText functions |
| * 2. GrayString functions |
| * 3. TabbedText functions |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA |
| */ |
| |
| #include "config.h" |
| #include "wine/port.h" |
| |
| #include <stdarg.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <assert.h> |
| |
| #include "windef.h" |
| #include "winbase.h" |
| #include "wingdi.h" |
| #include "wine/winuser16.h" |
| #include "wine/unicode.h" |
| #include "winerror.h" |
| #include "winnls.h" |
| #include "controls.h" |
| #include "user_private.h" |
| #include "wine/debug.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(text); |
| |
| /********************************************************************* |
| * |
| * DrawText functions |
| * |
| * Design issues |
| * How many buffers to use |
| * While processing in DrawText there are potentially three different forms |
| * of the text that need to be held. How are they best held? |
| * 1. The original text is needed, of course, to see what to display. |
| * 2. The text that will be returned to the user if the DT_MODIFYSTRING is |
| * in effect. |
| * 3. The buffered text that is about to be displayed e.g. the current line. |
| * Typically this will exclude the ampersands used for prefixing etc. |
| * |
| * Complications. |
| * a. If the buffered text to be displayed includes the ampersands then |
| * we will need special measurement and draw functions that will ignore |
| * the ampersands (e.g. by copying to a buffer without the prefix and |
| * then using the normal forms). This may involve less space but may |
| * require more processing. e.g. since a line containing tabs may |
| * contain several underlined characters either we need to carry around |
| * a list of prefix locations or we may need to locate them several |
| * times. |
| * b. If we actually directly modify the "original text" as we go then we |
| * will need some special "caching" to handle the fact that when we |
| * ellipsify the text the ellipsis may modify the next line of text, |
| * which we have not yet processed. (e.g. ellipsification of a W at the |
| * end of a line will overwrite the W, the \n and the first character of |
| * the next line, and a \0 will overwrite the second. Try it!!) |
| * |
| * Option 1. Three separate storages. (To be implemented) |
| * If DT_MODIFYSTRING is in effect then allocate an extra buffer to hold |
| * the edited string in some form, either as the string itself or as some |
| * sort of "edit list" to be applied just before returning. |
| * Use a buffer that holds the ellipsified current line sans ampersands |
| * and accept the need occasionally to recalculate the prefixes (if |
| * DT_EXPANDTABS and not DT_NOPREFIX and not DT_HIDEPREFIX) |
| */ |
| |
| #define TAB 9 |
| #define LF 10 |
| #define CR 13 |
| #define SPACE 32 |
| #define PREFIX 38 |
| |
| #define FORWARD_SLASH '/' |
| #define BACK_SLASH '\\' |
| |
| static const WCHAR ELLIPSISW[] = {'.','.','.', 0}; |
| |
| typedef struct tag_ellipsis_data |
| { |
| int before; |
| int len; |
| int under; |
| int after; |
| } ellipsis_data; |
| |
| /********************************************************************* |
| * TEXT_Ellipsify (static) |
| * |
| * Add an ellipsis to the end of the given string whilst ensuring it fits. |
| * |
| * If the ellipsis alone doesn't fit then it will be returned anyway. |
| * |
| * See Also TEXT_PathEllipsify |
| * |
| * Arguments |
| * hdc [in] The handle to the DC that defines the font. |
| * str [in/out] The string that needs to be modified. |
| * max_str [in] The dimension of str (number of WCHAR). |
| * len_str [in/out] The number of characters in str |
| * width [in] The maximum width permitted (in logical coordinates) |
| * size [out] The dimensions of the text |
| * modstr [out] The modified form of the string, to be returned to the |
| * calling program. It is assumed that the caller has |
| * made sufficient space available so we don't need to |
| * know the size of the space. This pointer may be NULL if |
| * the modified string is not required. |
| * len_before [out] The number of characters before the ellipsis. |
| * len_ellip [out] The number of characters in the ellipsis. |
| * |
| * See for example Microsoft article Q249678. |
| * |
| * For now we will simply use three dots rather than worrying about whether |
| * the font contains an explicit ellipsis character. |
| */ |
| 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) |
| { |
| 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 && |
| GetTextExtentExPointW(hdc, str, *len_str, width, NULL, NULL, size) && |
| size->cx > width) |
| { |
| for (lo = 0, hi = *len_str; lo < hi; ) |
| { |
| mid = (lo + hi) / 2; |
| if (!GetTextExtentExPointW(hdc, str, mid, width, NULL, NULL, size)) |
| 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)); |
| |
| if (!GetTextExtentExPointW (hdc, str, *len_str + len_ellipsis, width, |
| NULL, NULL, size)) break; |
| |
| 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)); |
| *(str+*len_str) = '\0'; |
| } |
| } |
| |
| /********************************************************************* |
| * TEXT_PathEllipsify (static) |
| * |
| * Add an ellipsis to the provided string in order to make it fit within |
| * the width. The ellipsis is added as specified for the DT_PATH_ELLIPSIS |
| * flag. |
| * |
| * See Also TEXT_Ellipsify |
| * |
| * Arguments |
| * hdc [in] The handle to the DC that defines the font. |
| * str [in/out] The string that needs to be modified |
| * max_str [in] The dimension of str (number of WCHAR). |
| * len_str [in/out] The number of characters in str |
| * width [in] The maximum width permitted (in logical coordinates) |
| * size [out] The dimensions of the text |
| * modstr [out] The modified form of the string, to be returned to the |
| * calling program. It is assumed that the caller has |
| * made sufficient space available so we don't need to |
| * know the size of the space. This pointer may be NULL if |
| * the modified string is not required. |
| * pellip [out] The ellipsification results |
| * |
| * For now we will simply use three dots rather than worrying about whether |
| * the font contains an explicit ellipsis character. |
| * |
| * The following applies, I think to Win95. We will need to extend it for |
| * Win98 which can have both path and end ellipsis at the same time (e.g. |
| * C:\MyLongFileName.Txt becomes ...\MyLongFileN...) |
| * |
| * The resulting string consists of as much as possible of the following: |
| * 1. The ellipsis itself |
| * 2. The last \ or / of the string (if any) |
| * 3. Everything after the last \ or / of the string (if any) or the whole |
| * string if there is no / or \. I believe that under Win95 this would |
| * include everything even though some might be clipped off the end whereas |
| * under Win98 that might be ellipsified too. |
| * Yet to be investigated is whether this would include wordbreaking if the |
| * filename is more than 1 word and splitting if DT_EDITCONTROL was in |
| * effect. (If DT_EDITCONTROL is in effect then on occasions text will be |
| * broken within words). |
| * 4. All the stuff before the / or \, which is placed before the ellipsis. |
| */ |
| 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) |
| { |
| 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 */ |
| |
| lastBkSlash = strrchrW (str, BACK_SLASH); |
| lastFwdSlash = strrchrW (str, FORWARD_SLASH); |
| 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 ( ; ; ) |
| { |
| if (!GetTextExtentExPointW (hdc, str, *len_str + len_ellipsis, width, |
| NULL, NULL, size)) break; |
| |
| 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'; |
| } |
| } |
| |
| /********************************************************************* |
| * TEXT_WordBreak (static) |
| * |
| * Perform wordbreak processing on the given string |
| * |
| * Assumes that DT_WORDBREAK has been specified and not all the characters |
| * fit. Note that this function should even be called when the first character |
| * that doesn't fit is known to be a space or tab, so that it can swallow them. |
| * |
| * Note that the Windows processing has some strange properties. |
| * 1. If the text is left-justified and there is room for some of the spaces |
| * that follow the last word on the line then those that fit are included on |
| * the line. |
| * 2. If the text is centred or right-justified and there is room for some of |
| * the spaces that follow the last word on the line then all but one of those |
| * that fit are included on the line. |
| * 3. (Reasonable behaviour) If the word breaking causes a space to be the first |
| * character of a new line it will be skipped. |
| * |
| * Arguments |
| * hdc [in] The handle to the DC that defines the font. |
| * str [in/out] The string that needs to be broken. |
| * max_str [in] The dimension of str (number of WCHAR). |
| * len_str [in/out] The number of characters in str |
| * width [in] The maximum width permitted |
| * format [in] The format flags in effect |
| * chars_fit [in] The maximum number of characters of str that are already |
| * known to fit; chars_fit+1 is known not to fit. |
| * chars_used [out] The number of characters of str that have been "used" and |
| * do not need to be included in later text. For example this will |
| * include any spaces that have been discarded from the start of |
| * the next line. |
| * size [out] The size of the returned text in logical coordinates |
| * |
| * Pedantic assumption - Assumes that the text length is monotonically |
| * increasing with number of characters (i.e. no weird kernings) |
| * |
| * Algorithm |
| * |
| * Work back from the last character that did fit to either a space or the last |
| * character of a word, whichever is met first. |
| * If there was one or the first character didn't fit then |
| * If the text is centred or right justified and that one character was a |
| * space then break the line before that character |
| * Otherwise break the line after that character |
| * and if the next character is a space then discard it. |
| * Suppose there was none (and the first character did fit). |
| * If Break Within Word is permitted |
| * break the word after the last character that fits (there must be |
| * at least one; none is caught earlier). |
| * Otherwise |
| * discard any trailing space. |
| * include the whole word; it may be ellipsified later |
| * |
| * Break Within Word is permitted under a set of circumstances that are not |
| * totally clear yet. Currently our best guess is: |
| * If DT_EDITCONTROL is in effect and neither DT_WORD_ELLIPSIS nor |
| * DT_PATH_ELLIPSIS is |
| */ |
| |
| 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) |
| { |
| 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) |
| ; /* we pretend that it fits anyway */ |
| else if (*p == SPACE) /* chars_fit < *len_str so this is valid */ |
| p--; /* the word just fitted */ |
| else |
| { |
| while (p > str && *(--p) != SPACE) |
| ; |
| word_fits = (p != str || *p == SPACE); |
| } |
| /* If there was one or the first character didn't fit then */ |
| 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 = (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; none is caught earlier). |
| */ |
| *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 */ |
| GetTextExtentExPointW (hdc, str, *len_str, 0, NULL, NULL, size); |
| } |
| |
| /********************************************************************* |
| * TEXT_SkipChars |
| * |
| * Skip over the given number of characters, bearing in mind prefix |
| * substitution and the fact that a character may take more than one |
| * WCHAR (Unicode surrogates are two words long) (and there may have been |
| * a trailing &) |
| * |
| * Parameters |
| * new_count [out] The updated count |
| * new_str [out] The updated pointer |
| * start_count [in] The count of remaining characters corresponding to the |
| * start of the string |
| * start_str [in] The starting point of the string |
| * max [in] The number of characters actually in this segment of the |
| * string (the & counts) |
| * n [in] The number of characters to skip (if prefix then |
| * &c counts as one) |
| * prefix [in] Apply prefix substitution |
| * |
| * Return Values |
| * none |
| * |
| * Remarks |
| * There must be at least n characters in the string |
| * We need max because the "line" may have ended with a & followed by a tab |
| * or newline etc. which we don't want to swallow |
| */ |
| |
| static void TEXT_SkipChars (int *new_count, const WCHAR **new_str, |
| int start_count, const WCHAR *start_str, |
| int max, int n, int prefix) |
| { |
| /* 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 && max--) |
| start_str++; |
| } |
| start_count -= (start_str - str_on_entry); |
| } |
| else |
| { |
| start_str += n; |
| start_count -= n; |
| } |
| *new_str = start_str; |
| *new_count = start_count; |
| } |
| |
| /********************************************************************* |
| * TEXT_Reprefix |
| * |
| * Reanalyse the text to find the prefixed character. This is called when |
| * wordbreaking or ellipsification has shortened the string such that the |
| * previously noted prefixed character is no longer visible. |
| * |
| * Parameters |
| * str [in] The original string segment (including all characters) |
| * ns [in] The number of characters in str (including prefixes) |
| * pe [in] The ellipsification data |
| * |
| * Return Values |
| * The prefix offset within the new string segment (the one that contains the |
| * ellipses and does not contain the prefix characters) (-1 if none) |
| */ |
| |
| static int TEXT_Reprefix (const WCHAR *str, unsigned int ns, |
| const ellipsis_data *pe) |
| { |
| int result = -1; |
| unsigned int i = 0; |
| unsigned int n = pe->before + pe->under + pe->after; |
| assert (n <= ns); |
| while (i < n) |
| { |
| if (i == pe->before) |
| { |
| /* Reached the path ellipsis; jump over it */ |
| if (ns < 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) |
| { |
| if (!ns) break; |
| if (*str != PREFIX) |
| result = (i < pe->before || pe->under == 0) ? i : i - pe->under + pe->len; |
| /* pe->len may be non-zero while pe_under is zero */ |
| str++; |
| ns--; |
| } |
| i++; |
| } |
| return result; |
| } |
| |
| /********************************************************************* |
| * Returns true if and only if the remainder of the line is a single |
| * newline representation or nothing |
| */ |
| |
| static int remainder_is_none_or_newline (int num_chars, const WCHAR *str) |
| { |
| 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; |
| } |
| |
| /********************************************************************* |
| * 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 - dest buffer size in chars on input, copied length into dest on output. |
| * width - maximum width of line in pixels. |
| * format - format type passed to DrawText. |
| * retsize - returned size of the line in pixels. |
| * last_line - TRUE if is the last line that will be processed |
| * p_retstr - If DT_MODIFYSTRING this points to a cursor in the buffer in which |
| * the return string is built. |
| * tabwidth - The width of a tab in logical coordinates |
| * pprefix_offset - Here is where we return the offset within dest of the first |
| * prefixed (underlined) character. -1 is returned if there |
| * are none. Note that there may be more; the calling code |
| * will need to use TEXT_Reprefix to find any later ones. |
| * pellip - Here is where we return the information about any ellipsification |
| * that was carried out. Note that if tabs are being expanded then |
| * this data will correspond to the last text segment actually |
| * returned in dest; by definition there would not have been any |
| * ellipsification in earlier text segments of the line. |
| * |
| * Returns pointer to next char in str after end of the line |
| * or NULL if end of str reached. |
| */ |
| 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) |
| { |
| int i = 0, j = 0; |
| int plen = 0; |
| SIZE size; |
| 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 (str[i] == PREFIX && !(format & DT_NOPREFIX) && *count > 1) |
| { |
| (*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 |
| { |
| (*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; |
| GetTextExtentExPointW (hdc, dest + seg_j, j_in_seg, max_seg_width, &num_fit, NULL, &size); |
| |
| /* 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; |
| } |
| |
| |
| /*********************************************************************** |
| * TEXT_DrawUnderscore |
| * |
| * Draw the underline under the prefixed character |
| * |
| * Parameters |
| * hdc [in] The handle of the DC for drawing |
| * x [in] The x location of the line segment (logical coordinates) |
| * y [in] The y location of where the underscore should appear |
| * (logical coordinates) |
| * str [in] The text of the line segment |
| * offset [in] The offset of the underscored character within str |
| * rect [in] Clipping rectangle (if not NULL) |
| */ |
| |
| static void TEXT_DrawUnderscore (HDC hdc, int x, int y, const WCHAR *str, int offset, const RECT *rect) |
| { |
| int prefix_x; |
| int prefix_end; |
| SIZE size; |
| HPEN hpen; |
| HPEN oldPen; |
| |
| GetTextExtentPointW (hdc, str, offset, &size); |
| prefix_x = x + size.cx; |
| GetTextExtentPointW (hdc, str, offset+1, &size); |
| 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; |
| } |
| |
| 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); |
| } |
| |
| /*********************************************************************** |
| * 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_BUFFER 1024 |
| INT WINAPI DrawTextExW( HDC hdc, LPWSTR str, INT i_count, |
| LPRECT rect, UINT flags, LPDRAWTEXTPARAMS dtp ) |
| { |
| 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; |
| |
| TRACE("%s, %d, [%s] %08x\n", debugstr_wn (str, count), count, |
| wine_dbgstr_rect(rect), flags); |
| |
| if (dtp) TRACE("Params: iTabLength=%d, iLeftMargin=%d, iRightMargin=%d\n", |
| dtp->iTabLength, dtp->iLeftMargin, dtp->iRightMargin); |
| |
| if (!str || count == 0) return 0; |
| if (count == -1) |
| { |
| count = strlenW(str); |
| if (count == 0) |
| { |
| if( flags & DT_CALCRECT) |
| { |
| rect->right = rect->left; |
| rect->bottom = rect->top; |
| } |
| 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; |
| |
| if (flags & DT_MODIFYSTRING) |
| { |
| size_retstr = (count + 4) * sizeof (WCHAR); |
| retstr = HeapAlloc(GetProcessHeap(), 0, size_retstr); |
| 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]); |
| 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); |
| |
| 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_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, (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 += lh; |
| if (dtp) |
| dtp->uiLengthDrawn += len; |
| } |
| while (strPtr && !last_line); |
| |
| 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); |
| HeapFree (GetProcessHeap(), 0, retstr); |
| } |
| 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) return 0; |
| if( !str || ((count == -1) && !(count = strlen(str)))) |
| { |
| if( flags & DT_CALCRECT) |
| { |
| rect->right = rect->left; |
| rect->bottom = rect->top; |
| } |
| 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, dtp ); |
| 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 ); |
| } |
| |
| /*********************************************************************** |
| * |
| * GrayString functions |
| */ |
| |
| /* callback for ASCII gray string proc */ |
| static BOOL CALLBACK gray_string_callbackA( HDC hdc, LPARAM param, INT len ) |
| { |
| return TextOutA( hdc, 0, 0, (LPCSTR)param, len ); |
| } |
| |
| /* callback for Unicode gray string proc */ |
| static BOOL CALLBACK gray_string_callbackW( HDC hdc, LPARAM param, INT len ) |
| { |
| return TextOutW( hdc, 0, 0, (LPCWSTR)param, len ); |
| } |
| |
| /*********************************************************************** |
| * TEXT_GrayString |
| */ |
| static BOOL TEXT_GrayString(HDC hdc, HBRUSH hb, GRAYSTRINGPROC fn, LPARAM lp, INT len, |
| INT x, INT y, INT cx, INT cy ) |
| { |
| 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; |
| |
| 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)); |
| |
| retval = fn(memdc, 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, SYSCOLOR_55AABrush); |
| 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; |
| } |
| |
| |
| /*********************************************************************** |
| * GrayStringA (USER32.@) |
| */ |
| BOOL WINAPI GrayStringA( HDC hdc, HBRUSH hbr, GRAYSTRINGPROC gsprc, |
| LPARAM lParam, INT cch, INT x, INT y, |
| INT cx, INT cy ) |
| { |
| if (!cch) cch = strlen( (LPCSTR)lParam ); |
| if ((cx == 0 || cy == 0) && cch != -1) |
| { |
| SIZE s; |
| GetTextExtentPoint32A( hdc, (LPCSTR)lParam, cch, &s ); |
| if (cx == 0) cx = s.cx; |
| if (cy == 0) cy = s.cy; |
| } |
| if (!gsprc) gsprc = gray_string_callbackA; |
| return TEXT_GrayString( hdc, hbr, gsprc, lParam, cch, x, y, cx, cy ); |
| } |
| |
| |
| /*********************************************************************** |
| * GrayStringW (USER32.@) |
| */ |
| BOOL WINAPI GrayStringW( HDC hdc, HBRUSH hbr, GRAYSTRINGPROC gsprc, |
| LPARAM lParam, INT cch, INT x, INT y, |
| INT cx, INT cy ) |
| { |
| if (!cch) cch = strlenW( (LPCWSTR)lParam ); |
| if ((cx == 0 || cy == 0) && cch != -1) |
| { |
| SIZE s; |
| GetTextExtentPoint32W( hdc, (LPCWSTR)lParam, cch, &s ); |
| if (cx == 0) cx = s.cx; |
| if (cy == 0) cy = s.cy; |
| } |
| if (!gsprc) gsprc = gray_string_callbackW; |
| return TEXT_GrayString( hdc, hbr, gsprc, lParam, cch, x, y, cx, cy ); |
| } |
| |
| |
| /*********************************************************************** |
| * 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, LPCWSTR lpstr, |
| INT count, INT cTabStops, const INT *lpTabPos, INT nTabOrg, |
| BOOL fDisplayText ) |
| { |
| INT defWidth; |
| SIZE extent; |
| int i, j; |
| int start = x; |
| |
| if (!lpTabPos) |
| cTabStops=0; |
| |
| if (cTabStops == 1) |
| { |
| defWidth = *lpTabPos; |
| cTabStops = 0; |
| } |
| else |
| { |
| TEXTMETRICA tm; |
| GetTextMetricsA( hdc, &tm ); |
| defWidth = 8 * tm.tmAveCharWidth; |
| } |
| |
| while (count > 0) |
| { |
| RECT r; |
| INT x0; |
| x0 = x; |
| r.left = x0; |
| /* chop the string into substrings of 0 or more <tabs> |
| * possibly followed by 1 or more normal characters */ |
| for (i = 0; i < count; i++) |
| if (lpstr[i] != '\t') break; |
| for (j = i; j < count; j++) |
| if (lpstr[j] == '\t') break; |
| /* get the extent of the normal character part */ |
| GetTextExtentPointW( hdc, lpstr + i, j - i , &extent ); |
| /* and if there is a <tab>, calculate its position */ |
| if( i) { |
| /* get x coordinate for the drawing of this string */ |
| for (; cTabStops > i; lpTabPos++, cTabStops--) |
| { |
| if( nTabOrg + abs( *lpTabPos) > x) { |
| if( lpTabPos[ i - 1] >= 0) { |
| /* a left aligned tab */ |
| x = nTabOrg + lpTabPos[ i-1] + extent.cx; |
| break; |
| } |
| else |
| { |
| /* if tab pos is negative then text is right-aligned |
| * to tab stop meaning that the string extends to the |
| * left, so we must subtract the width of the string */ |
| if (nTabOrg - lpTabPos[ i - 1] - extent.cx > x) |
| { |
| x = nTabOrg - lpTabPos[ i - 1]; |
| x0 = x - extent.cx; |
| break; |
| } |
| } |
| } |
| } |
| /* if we have run out of tab stops and we have a valid default tab |
| * stop width then round x up to that width */ |
| if ((cTabStops <= i) && (defWidth > 0)) { |
| x0 = nTabOrg + ((x - nTabOrg) / defWidth + i) * defWidth; |
| x = x0 + extent.cx; |
| } else if ((cTabStops <= i) && (defWidth < 0)) { |
| x = nTabOrg + ((x - nTabOrg + extent.cx) / -defWidth + i) |
| * -defWidth; |
| x0 = x - extent.cx; |
| } |
| } else |
| x += extent.cx; |
| |
| if (fDisplayText) |
| { |
| r.top = y; |
| r.right = x; |
| r.bottom = y + extent.cy; |
| ExtTextOutW( hdc, x0, y, GetBkMode(hdc) == OPAQUE ? ETO_OPAQUE : 0, |
| &r, lpstr + i, j - i, NULL ); |
| } |
| count -= j; |
| lpstr += j; |
| } |
| return MAKELONG(x - start, extent.cy); |
| } |
| |
| |
| /*********************************************************************** |
| * TabbedTextOutA (USER32.@) |
| * |
| * See TabbedTextOutW. |
| */ |
| LONG WINAPI TabbedTextOutA( HDC hdc, INT x, INT y, LPCSTR lpstr, INT count, |
| INT cTabStops, const INT *lpTabPos, INT nTabOrg ) |
| { |
| LONG ret; |
| DWORD len = MultiByteToWideChar( CP_ACP, 0, lpstr, count, NULL, 0 ); |
| LPWSTR strW = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) ); |
| if (!strW) return 0; |
| MultiByteToWideChar( CP_ACP, 0, lpstr, count, strW, len ); |
| ret = TabbedTextOutW( hdc, x, y, strW, len, cTabStops, lpTabPos, nTabOrg ); |
| HeapFree( GetProcessHeap(), 0, strW ); |
| return ret; |
| } |
| |
| |
| /*********************************************************************** |
| * TabbedTextOutW (USER32.@) |
| * |
| * Draws tabbed text aligned using the specified tab stops. |
| * |
| * PARAMS |
| * hdc [I] Handle to device context to draw to. |
| * x [I] X co-ordinate to start drawing the text at in logical units. |
| * y [I] Y co-ordinate to start drawing the text at in logical units. |
| * str [I] Pointer to the characters to draw. |
| * count [I] Number of WCHARs pointed to by str. |
| * cTabStops [I] Number of tab stops pointed to by lpTabPos. |
| * lpTabPos [I] Tab stops in logical units. Should be sorted in ascending order. |
| * nTabOrg [I] Starting position to expand tabs from in logical units. |
| * |
| * RETURNS |
| * The dimensions of the string drawn. The height is in the high-order word |
| * and the width is in the low-order word. |
| * |
| * NOTES |
| * The tabs stops can be negative, in which case the text is right aligned to |
| * that tab stop and, despite what MSDN says, this is supported on |
| * Windows XP SP2. |
| * |
| * BUGS |
| * MSDN says that the TA_UPDATECP from GetTextAlign causes this function to |
| * ignore the x and y co-ordinates, but this is unimplemented at the moment. |
| */ |
| LONG WINAPI TabbedTextOutW( HDC hdc, INT x, INT y, LPCWSTR str, INT count, |
| INT cTabStops, const INT *lpTabPos, INT nTabOrg ) |
| { |
| TRACE("%p %d,%d %s %d\n", hdc, x, y, debugstr_wn(str,count), count ); |
| return TEXT_TabbedTextOut( hdc, x, y, str, count, cTabStops, lpTabPos, nTabOrg, TRUE ); |
| } |
| |
| |
| /*********************************************************************** |
| * GetTabbedTextExtentA (USER32.@) |
| */ |
| DWORD WINAPI GetTabbedTextExtentA( HDC hdc, LPCSTR lpstr, INT count, |
| INT cTabStops, const INT *lpTabPos ) |
| { |
| LONG ret; |
| DWORD len = MultiByteToWideChar( CP_ACP, 0, lpstr, count, NULL, 0 ); |
| LPWSTR strW = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) ); |
| if (!strW) return 0; |
| MultiByteToWideChar( CP_ACP, 0, lpstr, count, strW, len ); |
| ret = GetTabbedTextExtentW( hdc, strW, len, cTabStops, lpTabPos ); |
| HeapFree( GetProcessHeap(), 0, strW ); |
| return ret; |
| } |
| |
| |
| /*********************************************************************** |
| * GetTabbedTextExtentW (USER32.@) |
| */ |
| DWORD WINAPI GetTabbedTextExtentW( HDC hdc, LPCWSTR lpstr, INT count, |
| INT cTabStops, const INT *lpTabPos ) |
| { |
| TRACE("%p %s %d\n", hdc, debugstr_wn(lpstr,count), count ); |
| return TEXT_TabbedTextOut( hdc, 0, 0, lpstr, count, cTabStops, lpTabPos, 0, FALSE ); |
| } |
