Rewrite TrueType font metric parsing code
Ian Pilcher
ian.pilcher at home.com
Thu Jul 26 15:19:55 CDT 2001
This cleans up the mess that was made when the built-in font metric data
was made constant.
Modified files:
dlls/wineps: afm.c init.c psdrv.h truetype.c
Log message:
Ian Pilcher <ian.pilcher at home.com>
WINEPS: rewrite TrueType font metric parsing code
--
========================================================================
Ian Pilcher ian.pilcher at home.com
========================================================================
-------------- next part --------------
diff -urN ../wine-20010724cvs/dlls/wineps/afm.c ./dlls/wineps/afm.c
--- ../wine-20010724cvs/dlls/wineps/afm.c Thu Jul 26 14:37:23 2001
+++ ./dlls/wineps/afm.c Thu Jul 26 14:36:52 2001
@@ -497,10 +497,13 @@
*
* PSDRV_AddAFMtoList
*
- * Adds an afm to the list whose head is pointed to by head. Creates new
- * family node if necessary and always creates a new AFMLISTENTRY.
+ * Adds an afm to the list whose head is pointed to by head. Creates new
+ * family node if necessary and always creates a new AFMLISTENTRY.
+ *
+ * Returns FALSE for memory allocation error; returns TRUE, but sets *p_added
+ * to FALSE, for duplicate.
*/
-BOOL PSDRV_AddAFMtoList(FONTFAMILY **head, const AFM *afm)
+BOOL PSDRV_AddAFMtoList(FONTFAMILY **head, const AFM *afm, BOOL *p_added)
{
FONTFAMILY *family = *head;
FONTFAMILY **insert = head;
@@ -535,6 +538,7 @@
}
strcpy( family->FamilyName, afm->FamilyName );
family->afmlist = newafmle;
+ *p_added = TRUE;
return TRUE;
}
else {
@@ -543,6 +547,7 @@
if (!strcmp(tmpafmle->afm->FontName, afm->FontName)) {
WARN("Ignoring duplicate FontName '%s'\n", afm->FontName);
HeapFree(PSDRV_Heap, 0, newafmle);
+ *p_added = FALSE;
return TRUE; /* not a fatal error */
}
tmpafmle = tmpafmle->next;
@@ -555,6 +560,7 @@
tmpafmle->next = newafmle;
+ *p_added = TRUE;
return TRUE;
}
@@ -834,14 +840,19 @@
static BOOL AddBuiltinAFMs()
{
- int i = 0;
+ const AFM *const *afm = PSDRV_BuiltinAFMs;
- while (PSDRV_BuiltinAFMs[i] != NULL)
+ while (*afm != NULL)
{
- if (PSDRV_AddAFMtoList(&PSDRV_AFMFontList, PSDRV_BuiltinAFMs[i])
- == FALSE)
+ BOOL added;
+
+ if (PSDRV_AddAFMtoList(&PSDRV_AFMFontList, *afm, &added) == FALSE)
return FALSE;
- ++i;
+
+ if (added == FALSE)
+ TRACE("Ignoring built-in font %s\n", (*afm)->FontName);
+
+ ++afm;
}
return TRUE;
@@ -861,6 +872,7 @@
static BOOL PSDRV_ReadAFMDir(const char* afmdir) {
DIR *dir;
const AFM *afm;
+ BOOL added;
dir = opendir(afmdir);
if (dir) {
@@ -881,7 +893,7 @@
TRACE("loading AFM %s\n",afmfn);
afm = PSDRV_AFMParse(afmfn);
if (afm) {
- if (PSDRV_AddAFMtoList(&PSDRV_AFMFontList, afm) == FALSE) {
+ if (PSDRV_AddAFMtoList(&PSDRV_AFMFontList, afm, &added) == FALSE) {
closedir(dir);
return FALSE;
}
@@ -908,6 +920,7 @@
char value[256];
HKEY hkey;
DWORD type, key_len, value_len;
+ BOOL added;
if (PSDRV_GlyphListInit() != 0)
return FALSE;
@@ -924,7 +937,7 @@
const AFM* afm = PSDRV_AFMParse(value);
if (afm) {
- if (PSDRV_AddAFMtoList(&PSDRV_AFMFontList, afm) == FALSE) {
+ if (PSDRV_AddAFMtoList(&PSDRV_AFMFontList, afm, &added) == FALSE) {
RegCloseKey(hkey);
return FALSE;
}
diff -urN ../wine-20010724cvs/dlls/wineps/init.c ./dlls/wineps/init.c
--- ../wine-20010724cvs/dlls/wineps/init.c Thu Jul 26 14:37:23 2001
+++ ./dlls/wineps/init.c Thu Jul 26 14:36:52 2001
@@ -620,7 +620,8 @@
"ignoring\n", font->Name);
}
else {
- if (PSDRV_AddAFMtoList(&pi->Fonts, afm) == FALSE) {
+ BOOL added;
+ if (PSDRV_AddAFMtoList(&pi->Fonts, afm, &added) == FALSE) {
PSDRV_FreeAFMList(pi->Fonts);
goto cleanup;
}
diff -urN ../wine-20010724cvs/dlls/wineps/psdrv.h ./dlls/wineps/psdrv.h
--- ../wine-20010724cvs/dlls/wineps/psdrv.h Thu Jul 26 14:37:23 2001
+++ ./dlls/wineps/psdrv.h Thu Jul 26 14:36:52 2001
@@ -298,7 +298,8 @@
extern PPD *PSDRV_ParsePPD(char *fname);
extern PRINTERINFO *PSDRV_FindPrinterInfo(LPCSTR name);
extern const AFM *PSDRV_FindAFMinList(FONTFAMILY *head, char *name);
-extern BOOL PSDRV_AddAFMtoList(FONTFAMILY **head, const AFM *afm);
+extern BOOL PSDRV_AddAFMtoList(FONTFAMILY **head, const AFM *afm,
+ BOOL *p_added);
extern void PSDRV_FreeAFMList( FONTFAMILY *head );
extern BOOL WINAPI PSDRV_Init(HINSTANCE hinst, DWORD reason, LPVOID reserved);
diff -urN ../wine-20010724cvs/dlls/wineps/truetype.c ./dlls/wineps/truetype.c
--- ../wine-20010724cvs/dlls/wineps/truetype.c Thu Jul 26 14:37:23 2001
+++ ./dlls/wineps/truetype.c Thu Jul 26 14:41:29 2001
@@ -4,6 +4,13 @@
*
* Copyright 2001 Ian Pilcher
*
+ *
+ * NOTE: Many of the functions in this file can return either fatal errors
+ * (memory allocation failure or unexpected FreeType error) or non-fatal
+ * errors (unusable font file). Fatal errors are indicated by returning
+ * FALSE; see individual function descriptions for how they indicate non-
+ * fatal errors.
+ *
*/
#include "config.h"
@@ -37,6 +44,7 @@
#include <dirent.h>
#include <string.h>
#include <stdio.h>
+#include <errno.h>
#include "winnt.h"
#include "winerror.h"
@@ -46,41 +54,27 @@
DEFAULT_DEBUG_CHANNEL(psdrv);
-
#define REQUIRED_FACE_FLAGS ( FT_FACE_FLAG_SCALABLE | \
FT_FACE_FLAG_HORIZONTAL | \
FT_FACE_FLAG_SFNT | \
FT_FACE_FLAG_GLYPH_NAMES )
-static FT_Library library;
-static FT_Face face;
-static FT_CharMap charmap;
-static TT_Header *head;
-static TT_Postscript *post;
-static TT_OS2 *os2;
-static TT_HoriHeader *hhea;
-
-/* This is now officially a pain in the ass! */
-
-typedef struct
-{
- LPSTR FontName;
- LPSTR FullName;
- LPSTR FamilyName;
- LPSTR EncodingScheme;
-} AFMSTRINGS;
-
+#define GLYPH_LOAD_FLAGS ( FT_LOAD_NO_SCALE | \
+ FT_LOAD_IGNORE_TRANSFORM | \
+ FT_LOAD_LINEAR_DESIGN )
+
/*******************************************************************************
- *
* FindCharMap
*
- * Sets charmap and points afm->EncodingScheme to encoding name (in driver
- * heap). Leaves both uninitialized if font contains no Windows encoding.
+ * Finds Windows character map and creates "EncodingScheme" string. Returns
+ * FALSE to indicate memory allocation or FreeType error; sets *p_charmap to
+ * NULL if no Windows encoding is present.
*
- * Returns FALSE to indicate memory allocation error.
+ * Returns Unicode character map if present; otherwise uses the first Windows
+ * character map found.
*
*/
-static const char *encoding_names[7] =
+static const LPCSTR encoding_names[7] =
{
"WindowsSymbol", /* TT_MS_ID_SYMBOL_CS */
"WindowsUnicode", /* TT_MS_ID_UNICODE_CS */
@@ -89,14 +83,14 @@
"WindowsBig5", /* TT_MS_ID_BIG_5 */
"WindowsWansung", /* TT_MS_ID_WANSUNG */
"WindowsJohab" /* TT_MS_ID_JOHAB */
+/* "WindowsUnknown65535" is the longest possible (encoding_id is a UShort) */
};
-
-static BOOL FindCharMap(AFM *afm, AFMSTRINGS *str)
+
+static BOOL FindCharMap(FT_Face face, FT_CharMap *p_charmap, LPSTR *p_sz)
{
FT_Int i;
FT_Error error;
-
- charmap = NULL;
+ FT_CharMap charmap = NULL;
for (i = 0; i < face->num_charmaps; ++i)
{
@@ -104,82 +98,72 @@
continue;
if (face->charmaps[i]->encoding_id == TT_MS_ID_UNICODE_CS)
- {
+ {
charmap = face->charmaps[i];
break;
}
-
+
if (charmap == NULL)
charmap = face->charmaps[i];
}
+ *p_charmap = charmap;
+
if (charmap == NULL)
- return TRUE;
-
+ {
+ WARN("No Windows character map found\n");
+ return TRUE;
+ }
+
error = FT_Set_Charmap(face, charmap);
if (error != FT_Err_Ok)
{
- ERR("%s returned %i\n", "FT_Set_CharMap", error);
+ ERR("%s returned %i\n", "FT_Set_Charmap", error);
return FALSE;
}
+
+ *p_sz = HeapAlloc(PSDRV_Heap, 0, sizeof("WindowsUnknown65535"));
+ if (*p_sz == NULL)
+ return FALSE;
if (charmap->encoding_id < 7)
- {
- if (!(str->EncodingScheme = HeapAlloc(PSDRV_Heap, 0,
- strlen(encoding_names[charmap->encoding_id])+1 )))
- return FALSE;
- strcpy( str->EncodingScheme, encoding_names[charmap->encoding_id] );
- }
+ strcpy(*p_sz, encoding_names[charmap->encoding_id]);
else
- {
- str->EncodingScheme =
- HeapAlloc(PSDRV_Heap, 0, sizeof("WindowsUnknown65535"));
- if (str->EncodingScheme == NULL)
- return FALSE;
-
- sprintf(str->EncodingScheme, "%s%u", "WindowsUnknown",
- charmap->encoding_id);
- }
-
- afm->EncodingScheme = str->EncodingScheme;
-
+ sprintf(*p_sz, "%s%u", "WindowsUnknown", charmap->encoding_id);
+
return TRUE;
}
/*******************************************************************************
- * NameTableString
+ * MSTTStrToSz
*
- * Converts a name table string to a null-terminated character string. The
- * space for the character string is allocated from the driver heap.
+ * Converts a string in the TrueType NAME table to a null-terminated ASCII
+ * character string. Space for the string is allocated from the driver heap.
+ * Only handles platform_id = 3 (TT_PLATFORM_MICROSOFT) strings (16-bit, big
+ * endian). It also only handles ASCII character codes (< 128).
*
- * This function handles only platform_id = 3 (TT_PLATFORM_MICROSOFT) -- 16-bit
- * big-endian strings. It also only handles ASCII character codes (< 128).
- *
- * This function will set *sz to NULL if it cannot parse the string, but it
- * will only return FALSE in the event of an unexpected error (memory
- * allocation failure).
+ * Sets *p_sz to NULL if string cannot be converted; only returns FALSE for
+ * memory allocation failure.
*
*/
-static BOOL NameTableString(LPSTR *sz, const FT_SfntName *name)
-{
- FT_UShort i, len, *ws;
- LPSTR s;
+static BOOL MSTTStrToSz(const FT_SfntName *name, LPSTR *p_sz)
+{
+ FT_UShort i;
+ INT len;
+ USHORT *wsz;
+ LPSTR sz;
- if (name->platform_id != TT_PLATFORM_MICROSOFT)
- {
- ERR("Unsupported encoding %i\n", name->platform_id);
- return FALSE; /* should never get here */
- }
+ len = name->string_len / 2; /* # of 16-bit chars */
- len = name->string_len / 2;
- *sz = s = HeapAlloc(PSDRV_Heap, 0, len + 1);
- if (s == NULL)
+ *p_sz = sz = HeapAlloc(PSDRV_Heap, 0, len + 1);
+ if (sz == NULL)
return FALSE;
- ws = (FT_UShort *)(name->string);
- for (i = 0; i < len; ++i, ++s, ++ws)
+ wsz = (USHORT *)(name->string);
+
+ for (i = 0; i < len; ++i, ++sz, ++wsz)
{
- FT_UShort wc = *ws;
+ USHORT wc = *wsz;
#ifndef WORDS_BIGENDIAN
wc = (wc >> 8) | (wc << 8);
@@ -188,39 +172,42 @@
if (wc > 127)
{
WARN("Non-ASCII character 0x%.4x\n", wc);
- HeapFree(PSDRV_Heap, 0, *sz);
- *sz = NULL;
+ HeapFree(PSDRV_Heap, 0, *p_sz);
+ *p_sz = NULL;
return TRUE;
}
- *s = (CHAR)wc;
+ *sz = (CHAR)wc;
}
- *s = '\0';
+ *sz = '\0';
+
return TRUE;
}
/*******************************************************************************
- * ReadNameTable
+ * FindMSTTString
*
- * Reads various font names from the TrueType 'NAME' table. Currently looks
- * for U.S. English names only,
+ * Finds the requested Microsoft platform string in the TrueType NAME table and
+ * converts it to a null-terminated ASCII string. Currently looks for U.S.
+ * English names only.
*
- * May leave a pointer uninitialized if the desired string is not present;
- * returns FALSE only in the event of an unexpected error.
+ * Sets string to NULL if not present or cannot be converted; returns FALSE
+ * only for memory allocation failure.
*
*/
-static BOOL ReadNameTable(AFM *afm, AFMSTRINGS *str)
+static BOOL FindMSTTString(FT_Face face, FT_CharMap charmap, FT_UShort name_id,
+ LPSTR *p_sz)
{
- FT_UInt numStrings, stringIndex;
- FT_SfntName name;
- FT_Error error;
-
- numStrings = FT_Get_Sfnt_Name_Count(face);
+ FT_UInt num_strings, string_index;
+ FT_SfntName name;
+ FT_Error error;
+
+ num_strings = FT_Get_Sfnt_Name_Count(face);
- for (stringIndex = 0; stringIndex < numStrings; ++stringIndex)
+ for (string_index = 0; string_index < num_strings; ++string_index)
{
- error = FT_Get_Sfnt_Name(face, stringIndex, &name);
+ error = FT_Get_Sfnt_Name(face, string_index, &name);
if (error != FT_Err_Ok)
{
ERR("%s returned %i\n", "FT_Get_Sfnt_Name", error);
@@ -229,36 +216,22 @@
/* FIXME - Handle other languages? */
- if (name.language_id != TT_MS_LANGID_ENGLISH_UNITED_STATES ||
- name.platform_id != charmap->platform_id ||
- name.encoding_id != charmap->encoding_id)
+ if (name.platform_id != TT_PLATFORM_MICROSOFT ||
+ name.language_id != TT_MS_LANGID_ENGLISH_UNITED_STATES)
continue;
-
- switch (name.name_id)
- {
- case TT_NAME_ID_FONT_FAMILY:
- if (NameTableString(&(str->FamilyName), &name) == FALSE)
- return FALSE;
- afm->FamilyName = str->FamilyName;
- break;
-
- case TT_NAME_ID_FULL_NAME:
-
- if (NameTableString(&(str->FullName), &name) == FALSE)
- return FALSE;
- afm->FullName = str->FullName;
- break;
+ if (name.platform_id != charmap->platform_id ||
+ name.encoding_id != charmap->encoding_id)
+ continue;
- case TT_NAME_ID_PS_NAME:
+ if (name.name_id != name_id)
+ continue;
- if (NameTableString(&(str->FontName), &name) == FALSE)
- return FALSE;
- afm->FontName = str->FontName;
- break;
- }
+ return MSTTStrToSz(&name, p_sz);
}
+ *p_sz = NULL; /* didn't find it */
+
return TRUE;
}
@@ -266,50 +239,49 @@
* PSUnits
*
* Convert TrueType font units (relative to font em square) to PostScript
- * units. This is defined as a macro, so it can handle different TrueType
- * data types as inputs.
+ * units.
*
*/
-#define PSUnits(x) (((float)(x)) * 1000.0 / ((float)(head->Units_Per_EM)))
+inline static float PSUnits(LONG x, USHORT em_size)
+{
+ return 1000.0 * (float)x / (float)em_size;
+}
/*******************************************************************************
- * ReadMetricsTables
+ * StartAFM
*
- * Reads basic font metrics from the 'head', 'post', and 'OS/2' tables.
- * Returns FALSE if any table is missing.
+ * Allocates space for the AFM on the driver heap and reads basic font metrics
+ * from the HEAD, POST, HHEA, and OS/2 tables. Returns FALSE for memory
+ * allocation error; sets *p_afm to NULL if required information is missing.
*
- */
-static BOOL ReadMetricsTables(AFM *afm)
+ */
+static BOOL StartAFM(FT_Face face, AFM **p_afm)
{
+ TT_Header *head;
+ TT_Postscript *post;
+ TT_OS2 *os2;
+ TT_HoriHeader *hhea;
+ USHORT em_size;
+ AFM *afm;
+
head = FT_Get_Sfnt_Table(face, ft_sfnt_head);
post = FT_Get_Sfnt_Table(face, ft_sfnt_post);
- hhea = FT_Get_Sfnt_Table(face, ft_sfnt_hhea);
os2 = FT_Get_Sfnt_Table(face, ft_sfnt_os2);
+ hhea = FT_Get_Sfnt_Table(face, ft_sfnt_hhea);
- if (head == NULL || post == NULL || hhea == NULL || os2 == NULL)
- return FALSE;
-
- if (os2->version == 0xffff) /* Old Macintosh font */
- return FALSE;
-
- afm->Weight = os2->usWeightClass;
- afm->ItalicAngle = ((float)(post->italicAngle)) / 65536.0;
- afm->IsFixedPitch = (post->isFixedPitch == 0) ? FALSE : TRUE;
- afm->UnderlinePosition = PSUnits(post->underlinePosition);
- afm->UnderlineThickness = PSUnits(post->underlineThickness);
-
- afm->FontBBox.llx = PSUnits(head->xMin);
- afm->FontBBox.lly = PSUnits(head->yMin);
- afm->FontBBox.urx = PSUnits(head->xMax);
- afm->FontBBox.ury = PSUnits(head->yMax);
-
- /* CapHeight & XHeight set by ReadCharMetrics */
+ if (head == NULL || post == NULL || os2 == NULL || hhea == NULL ||
+ os2->version == 0xffff) /* old Macintosh font */
+ {
+ WARN("Required table(s) missing\n");
+ *p_afm = NULL;
+ return TRUE;
+ }
- afm->Ascender = PSUnits(os2->sTypoAscender);
- afm->Descender = PSUnits(os2->sTypoDescender);
- afm->FullAscender = afm->FontBBox.ury; /* get rid of this */
+ *p_afm = afm = HeapAlloc(PSDRV_Heap, 0, sizeof(*afm));
+ if (afm == NULL)
+ return FALSE;
- afm->WinMetrics.usUnitsPerEm = head->Units_Per_EM;
+ afm->WinMetrics.usUnitsPerEm = em_size = head->Units_Per_EM;
afm->WinMetrics.sAscender = hhea->Ascender;
afm->WinMetrics.sDescender = hhea->Descender;
afm->WinMetrics.sLineGap = hhea->Line_Gap;
@@ -319,6 +291,23 @@
afm->WinMetrics.usWinAscent = os2->usWinAscent;
afm->WinMetrics.usWinDescent = os2->usWinDescent;
afm->WinMetrics.sAvgCharWidth = os2->xAvgCharWidth;
+
+ afm->Weight = os2->usWeightClass;
+ afm->ItalicAngle = ((float)(post->italicAngle)) / 65536.0;
+ afm->IsFixedPitch = (post-> isFixedPitch == 0) ? FALSE : TRUE;
+ afm->UnderlinePosition = PSUnits(post->underlinePosition, em_size);
+ afm->UnderlineThickness = PSUnits(post->underlineThickness, em_size);
+
+ afm->FontBBox.llx = PSUnits(head->xMin, em_size);
+ afm->FontBBox.lly = PSUnits(head->yMin, em_size);
+ afm->FontBBox.urx = PSUnits(head->xMax, em_size);
+ afm->FontBBox.ury = PSUnits(head->yMax, em_size);
+
+ afm->Ascender = PSUnits(os2->sTypoAscender, em_size);
+ afm->Descender = PSUnits(os2->sTypoDescender, em_size);
+ afm->FullAscender = afm->FontBBox.ury; /* get rid of this */
+
+ /* CapHeight & XHeight set by ReadCharMetrics */
return TRUE;
}
@@ -326,43 +315,38 @@
/*******************************************************************************
* ReadCharMetrics
*
- * Reads metrics for each glyph in a TrueType font.
+ * Reads metrics for each glyph in a TrueType font. Returns false for memory
+ * allocation or FreeType error; sets *p_metrics to NULL for non-fatal error.
*
*/
-static AFMMETRICS *ReadCharMetrics(AFM *afm)
+static BOOL ReadCharMetrics(FT_Face face, AFM *afm, AFMMETRICS **p_metrics)
{
- FT_ULong charcode, index;
- AFMMETRICS *metrics;
+ FT_ULong charcode, index;
+ AFMMETRICS *metrics;
+ USHORT em_size = afm->WinMetrics.usUnitsPerEm;
- /*
- * There does not seem to be an easy way to get the number of characters
- * in an encoding out of a TrueType font.
- */
for (charcode = 0, index = 0; charcode < 65536; ++charcode)
- {
if (FT_Get_Char_Index(face, charcode) != 0)
- ++index;
- }
-
+ ++index; /* count # of glyphs */
+
afm->NumofMetrics = index;
- metrics = HeapAlloc(PSDRV_Heap, 0, index * sizeof(AFMMETRICS));
+ *p_metrics = metrics = HeapAlloc(PSDRV_Heap, 0, index * sizeof(*metrics));
if (metrics == NULL)
- return NULL;
+ return FALSE;
- for (charcode = 0, index = 0; charcode <= 65536; ++charcode)
+ for (charcode = 0, index = 0; charcode < 65536; ++charcode)
{
FT_UInt glyph_index = FT_Get_Char_Index(face, charcode);
FT_Error error;
FT_Glyph glyph;
FT_BBox bbox;
- char buffer[256];
+ CHAR buffer[128]; /* for glyph names */
if (glyph_index == 0)
continue;
- error = FT_Load_Glyph(face, glyph_index, FT_LOAD_NO_SCALE |
- FT_LOAD_IGNORE_TRANSFORM | FT_LOAD_LINEAR_DESIGN);
+ error = FT_Load_Glyph(face, glyph_index, GLYPH_LOAD_FLAGS);
if (error != FT_Err_Ok)
{
ERR("%s returned %i\n", "FT_Load_Glyph", error);
@@ -378,278 +362,256 @@
FT_Glyph_Get_CBox(glyph, ft_glyph_bbox_unscaled, &bbox);
- error = FT_Get_Glyph_Name(face, glyph_index, buffer, 255);
+ error = FT_Get_Glyph_Name(face, glyph_index, buffer, sizeof(buffer));
if (error != FT_Err_Ok)
{
ERR("%s returned %i\n", "FT_Get_Glyph_Name", error);
goto cleanup;
- }
+ }
metrics[index].N = PSDRV_GlyphName(buffer);
if (metrics[index].N == NULL)
- goto cleanup;;
-
- metrics[index].C = charcode;
- metrics[index].UV = charcode;
- metrics[index].WX = PSUnits(face->glyph->metrics.horiAdvance);
- metrics[index].B.llx = PSUnits(bbox.xMin);
- metrics[index].B.lly = PSUnits(bbox.yMin);
- metrics[index].B.urx = PSUnits(bbox.xMax);
- metrics[index].B.ury = PSUnits(bbox.yMax);
+ goto cleanup;
+
+ metrics[index].C = metrics[index].UV = charcode;
+ metrics[index].WX = PSUnits(face->glyph->metrics.horiAdvance, em_size);
+ metrics[index].B.llx = PSUnits(bbox.xMin, em_size);
+ metrics[index].B.lly = PSUnits(bbox.yMin, em_size);
+ metrics[index].B.urx = PSUnits(bbox.xMax, em_size);
+ metrics[index].B.ury = PSUnits(bbox.yMax, em_size);
metrics[index].L = NULL;
- TRACE("Metrics for '%s' WX = %f B = %f,%f - %f,%f\n",
- metrics[index].N->sz, metrics[index].WX,
- metrics[index].B.llx, metrics[index].B.lly,
- metrics[index].B.urx, metrics[index].B.ury);
-
if (charcode == 0x0048) /* 'H' */
- afm->CapHeight = PSUnits(bbox.yMax);
+ afm->CapHeight = metrics[index].B.ury;
if (charcode == 0x0078) /* 'x' */
- afm->XHeight = PSUnits(bbox.yMax);
-
+ afm->XHeight = metrics[index].B.ury;
+
++index;
}
- return metrics;
+ if (afm->WinMetrics.sAvgCharWidth == 0)
+ afm->WinMetrics.sAvgCharWidth = PSDRV_CalcAvgCharWidth(afm);
+
+ return TRUE;
cleanup:
-
HeapFree(PSDRV_Heap, 0, metrics);
- return NULL;
+
+ return FALSE;
}
/*******************************************************************************
- * ReadTrueTypeAFM
+ * BuildTrueTypeAFM
*
- * Fills in AFM structure for opened TrueType font file. Returns FALSE only on
- * an unexpected error (memory allocation failure or FreeType error); otherwise
- * returns TRUE.
+ * Builds the AFM for a TrueType font and adds it to the driver font list.
+ * Returns FALSE only on an unexpected error (memory allocation failure or
+ * FreeType error).
*
*/
-static BOOL ReadTrueTypeAFM(AFM *afm)
+static BOOL BuildTrueTypeAFM(FT_Face face)
{
- AFMSTRINGS str = { NULL, NULL, NULL, NULL };
+ AFM *afm;
AFMMETRICS *metrics;
-
- if ((face->face_flags & REQUIRED_FACE_FLAGS) != REQUIRED_FACE_FLAGS)
- {
- WARN("Font flags do not match requirements\n");
- return TRUE;
- }
+ LPSTR font_name, full_name, family_name, encoding_scheme;
+ FT_CharMap charmap;
+ BOOL retval, added;
+
+ retval = StartAFM(face, &afm);
+ if (retval == FALSE || afm == NULL)
+ return retval;
+
+ retval = FindCharMap(face, &charmap, &encoding_scheme);
+ if (retval == FALSE || charmap == NULL)
+ goto cleanup_afm;
+
+ retval = FindMSTTString(face, charmap, TT_NAME_ID_PS_NAME, &font_name);
+ if (retval == FALSE || font_name == NULL)
+ goto cleanup_encoding_scheme;
+
+ retval = FindMSTTString(face, charmap, TT_NAME_ID_FULL_NAME, &full_name);
+ if (retval == FALSE || full_name == NULL)
+ goto cleanup_font_name;
+
+ retval = FindMSTTString(face, charmap, TT_NAME_ID_FONT_FAMILY,
+ &family_name);
+ if (retval == FALSE || family_name == NULL)
+ goto cleanup_full_name;
+
+ retval = ReadCharMetrics(face, afm, &metrics);
+ if (retval == FALSE || metrics == NULL)
+ goto cleanup_family_name;
+
+ afm->EncodingScheme = encoding_scheme; afm->FontName = font_name;
+ afm->FullName = full_name; afm->FamilyName = family_name;
+ afm->Metrics = metrics;
+
+ retval = PSDRV_AddAFMtoList(&PSDRV_AFMFontList, afm, &added);
+ if (retval == FALSE || added == FALSE)
+ goto cleanup_family_name;
+
+ return TRUE;
- if (FindCharMap(afm, &str) == FALSE)
- return FALSE;
+ /* clean up after fatal or non-fatal errors */
- if (charmap == NULL)
+ cleanup_family_name:
+ HeapFree(PSDRV_Heap, 0, family_name);
+ cleanup_full_name:
+ HeapFree(PSDRV_Heap, 0, full_name);
+ cleanup_font_name:
+ HeapFree(PSDRV_Heap, 0, font_name);
+ cleanup_encoding_scheme:
+ HeapFree(PSDRV_Heap, 0, encoding_scheme);
+ cleanup_afm:
+ HeapFree(PSDRV_Heap, 0, afm);
+
+ return retval;
+}
+
+/*******************************************************************************
+ * ReadTrueTypeFile
+ *
+ * Reads font metrics from TrueType font file. Only returns FALSE for
+ * unexpected errors (memory allocation failure or FreeType error).
+ *
+ */
+static BOOL ReadTrueTypeFile(FT_Library library, LPCSTR filename)
+{
+ FT_Error error;
+ FT_Face face;
+
+ TRACE("%s\n", filename);
+
+ error = FT_New_Face(library, filename, 0, &face);
+ if (error != FT_Err_Ok)
{
- WARN("No Windows encodings in font\n");
+ WARN("FreeType error %i opening %s\n", error, filename);
return TRUE;
}
- TRACE("Using encoding '%s'\n", afm->EncodingScheme);
-
- if (ReadNameTable(afm, &str) == FALSE)
- {
- if (str.FontName != NULL) HeapFree(PSDRV_Heap, 0, str.FontName);
- if (str.FullName != NULL) HeapFree(PSDRV_Heap, 0, str.FullName);
- if (str.FamilyName != NULL) HeapFree(PSDRV_Heap, 0, str.FamilyName);
- HeapFree(PSDRV_Heap, 0, str.EncodingScheme);
- return FALSE;
- }
-
- if (str.FamilyName == NULL || str.FullName == NULL || str.FontName == NULL)
+ if ((face->face_flags & REQUIRED_FACE_FLAGS) == REQUIRED_FACE_FLAGS)
{
- WARN("Required strings missing from font\n");
- if (str.FontName != NULL) HeapFree(PSDRV_Heap, 0, str.FontName);
- if (str.FullName != NULL) HeapFree(PSDRV_Heap, 0, str.FullName);
- if (str.FamilyName != NULL) HeapFree(PSDRV_Heap, 0, str.FamilyName);
- HeapFree(PSDRV_Heap, 0, str.EncodingScheme);
- return TRUE;
+ if (BuildTrueTypeAFM(face) == FALSE)
+ {
+ FT_Done_Face(face);
+ return FALSE;
+ }
}
-
- if (ReadMetricsTables(afm) == FALSE) /* Non-fatal */
+ else
{
- WARN("Required metrics tables missing from font\n");
- return TRUE;
+ WARN("Required information missing from %s\n", filename);
}
- afm->Metrics = metrics = ReadCharMetrics(afm);
- if (metrics == NULL)
- {
- HeapFree(PSDRV_Heap, 0, str.FontName);
- HeapFree(PSDRV_Heap, 0, str.FullName);
- HeapFree(PSDRV_Heap, 0, str.FamilyName);
- HeapFree(PSDRV_Heap, 0, str.EncodingScheme);
- return FALSE;
- }
-
- /* Can't do this check until character metrics are read */
-
- if (afm->WinMetrics.sAvgCharWidth == 0)
- afm->WinMetrics.sAvgCharWidth = PSDRV_CalcAvgCharWidth(afm);
-
- if (PSDRV_AddAFMtoList(&PSDRV_AFMFontList, afm) == FALSE)
+ error = FT_Done_Face(face);
+ if (error != FT_Err_Ok)
{
- HeapFree(PSDRV_Heap, 0, str.FontName);
- HeapFree(PSDRV_Heap, 0, str.FullName);
- HeapFree(PSDRV_Heap, 0, str.FamilyName);
- HeapFree(PSDRV_Heap, 0, str.EncodingScheme);
- HeapFree(PSDRV_Heap, 0, metrics);
+ ERR("%s returned %i\n", "FT_Done_Face", error);
return FALSE;
}
-
+
return TRUE;
}
/*******************************************************************************
- * ReadTrueTypeFile
+ * ReadTrueTypeDir
*
- * Reads PostScript-style font metrics from a TrueType font file. Only returns
- * FALSE for unexpected errors (memory allocation, etc.); returns TRUE if it's
- * just a bad font file.
+ * Reads all TrueType font files in a directory.
*
*/
-static BOOL ReadTrueTypeFile(LPCSTR filename)
+static BOOL ReadTrueTypeDir(FT_Library library, LPCSTR dirname)
{
- FT_Error error;
- AFM *afm;
+ struct dirent *dent;
+ DIR *dir;
+ CHAR filename[256];
- TRACE("'%s'\n", filename);
-
- afm = HeapAlloc(PSDRV_Heap, HEAP_ZERO_MEMORY, sizeof(AFM));
- if (afm == NULL)
- return FALSE;
-
- error = FT_New_Face(library, filename, 0, &face);
- if (error != FT_Err_Ok)
+ dir = opendir(dirname);
+ if (dir == NULL)
{
- WARN("FreeType error %i opening '%s'\n", error, filename);
- HeapFree(PSDRV_Heap, 0, afm);
- return TRUE;
+ WARN("'%s' opening %s\n", strerror(errno), dirname);
+ return TRUE;;
}
- if (ReadTrueTypeAFM(afm) == FALSE)
- {
- HeapFree(PSDRV_Heap, 0, afm);
- FT_Done_Face(face);
- return FALSE;
- }
-
- error = FT_Done_Face(face);
- if (error != FT_Err_Ok)
+ while ((dent = readdir(dir)) != NULL)
{
- ERR("%s returned %i\n", "FT_Done_Face", error);
- HeapFree(PSDRV_Heap, 0, afm);
- return FALSE;
+ CHAR *file_extension = strrchr(dent->d_name, '.');
+ int fn_len;
+
+ if (file_extension == NULL || strcasecmp(file_extension, ".ttf") != 0)
+ continue;
+
+ fn_len = snprintf(filename, 256, "%s/%s", dirname, dent->d_name);
+ if (fn_len < 0 || fn_len > sizeof(filename) - 1)
+ {
+ WARN("Path '%s/%s' is too long\n", dirname, dent->d_name);
+ continue;
+ }
+
+ if (ReadTrueTypeFile(library, filename) == FALSE)
+ {
+ closedir(dir);
+ return FALSE;
+ }
}
- if (afm->Metrics == NULL) /* last element to be set */
- {
- HeapFree(PSDRV_Heap, 0, afm);
- return TRUE;
- }
+ closedir(dir);
return TRUE;
}
-
-
-
+
/*******************************************************************************
* PSDRV_GetTrueTypeMetrics
*
- * Reads PostScript-stype font metrics from TrueType font files in directories
- * listed in the [TrueType Font Directories] section of the Wine configuration
- * file.
- *
- * If this function fails, the driver will fail to initialize and the driver
- * heap will be destroyed, so it's not necessary to HeapFree everything in
- * that event.
+ * Reads font metrics from TrueType font files in directories listed in the
+ * [TrueType Font Directories] section of the Wine configuration file.
+ *
+ * If this function fails (returns FALSE), the driver will fail to initialize
+ * and the driver heap will be destroyed, so it's not necessary to HeapFree
+ * everything in that event.
*
*/
BOOL PSDRV_GetTrueTypeMetrics(void)
{
- CHAR keybuf[256], namebuf[256];
+ CHAR name_buf[256], value_buf[256];
INT i = 0;
FT_Error error;
+ FT_Library library;
HKEY hkey;
- DWORD type, key_len, name_len;
+ DWORD type, name_len, value_len;
+
+ if(RegOpenKeyExA(HKEY_LOCAL_MACHINE,
+ "Software\\Wine\\Wine\\Config\\TrueType Font Directories",
+ 0, KEY_READ, &hkey) != ERROR_SUCCESS)
+ return TRUE;
error = FT_Init_FreeType(&library);
if (error != FT_Err_Ok)
{
ERR("%s returned %i\n", "FT_Init_FreeType", error);
+ RegCloseKey(hkey);
return FALSE;
}
- if(RegOpenKeyExA(HKEY_LOCAL_MACHINE,
- "Software\\Wine\\Wine\\Config\\TrueType Font Directories",
- 0, KEY_READ, &hkey) != ERROR_SUCCESS)
- goto no_metrics;
-
- key_len = sizeof(keybuf);
- name_len = sizeof(namebuf);
+ name_len = sizeof(name_buf);
+ value_len = sizeof(value_buf);
- while(RegEnumValueA(hkey, i++, keybuf, &key_len, NULL, &type, namebuf,
- &name_len) == ERROR_SUCCESS)
+ while(RegEnumValueA(hkey, i++, name_buf, &name_len, NULL, &type, value_buf,
+ &value_len) == ERROR_SUCCESS)
{
- struct dirent *dent;
- DIR *dir;
- INT dnlen; /* directory name length */
-
- namebuf[sizeof(namebuf) - 1] = '\0';
- dir = opendir(namebuf);
- if (dir == NULL)
- {
- WARN("Error opening directory '%s'\n", namebuf);
- continue;
- }
-
- dnlen = strlen(namebuf);
- namebuf[dnlen] = '/'; /* 2 slashes is OK, 0 is not */
- ++dnlen;
+ value_buf[sizeof(value_buf) - 1] = '\0';
- while ((dent = readdir(dir)) != NULL)
+ if (ReadTrueTypeDir(library, value_buf) == FALSE)
{
- INT fnlen; /* file name length */
-
- fnlen = strlen(dent->d_name);
-
- if (fnlen < 5 || strcasecmp(dent->d_name + fnlen - 4, ".ttf") != 0)
- {
- TRACE("Skipping filename '%s'\n", dent->d_name);
- continue;
- }
-
- if (dnlen + fnlen + 1 > sizeof(namebuf)) /* allow for '\0' */
- {
- WARN("Path '%s/%s' is too long\n", namebuf, dent->d_name);
- continue;
- }
-
- memcpy(namebuf + dnlen, dent->d_name, fnlen + 1);
-
- if (ReadTrueTypeFile(namebuf) == FALSE)
- {
- ERR("Error reading '%s'\n", namebuf);
- closedir(dir);
- RegCloseKey(hkey);
- FT_Done_FreeType(library);
- return FALSE;
- }
+ RegCloseKey(hkey);
+ FT_Done_FreeType(library);
+ return FALSE;
}
- closedir(dir);
-
/* initialize lengths for new iteration */
- key_len = sizeof(keybuf);
- name_len = sizeof(namebuf);
+
+ name_len = sizeof(name_buf);
+ value_len = sizeof(value_buf);
}
RegCloseKey(hkey);
-
- no_metrics:
-
FT_Done_FreeType(library);
return TRUE;
}
More information about the wine-patches
mailing list