#include <windows.h>
#include <usp10.h>
+#include <rpc.h>
#include "hb-uniscribe.h"
+#include "hb-open-file-private.hh"
#include "hb-ot-name-table.hh"
#include "hb-ot-tag.h"
struct hb_uniscribe_shaper_face_data_t {
HANDLE fh;
hb_uniscribe_shaper_funcs_t *funcs;
+ wchar_t face_name[LF_FACESIZE];
};
+static char *
+_hb_rename_font (const char *orig_sfnt_data, unsigned int length,
+ unsigned int *new_length, wchar_t *new_name)
+{
+ /* We'll create a private name for the font from a UUID using a simple,
+ * somewhat base64-like encoding scheme */
+ const char *enc = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-";
+ UUID id;
+ UuidCreate ((UUID*) &id);
+ unsigned int name_str_len = 0;
+ new_name[name_str_len++] = 'F';
+ new_name[name_str_len++] = '_';
+ unsigned char *p = (unsigned char *) &id;
+ for (unsigned int i = 0; i < 16; i += 2)
+ {
+ /* Spread the 16 bits from two bytes of the UUID across three chars of face_name,
+ * using the bits in groups of 5,5,6 to select chars from enc.
+ * This will generate 24 characters; with the 'F_' prefix we already provided,
+ * the name will be 26 chars (plus the NUL terminator), so will always fit within
+ * face_name (LF_FACESIZE = 32). */
+ new_name[name_str_len++] = enc[p[i] >> 3];
+ new_name[name_str_len++] = enc[((p[i] << 2) | (p[i + 1] >> 6)) & 0x1f];
+ new_name[name_str_len++] = enc[p[i + 1] & 0x3f];
+ }
+ new_name[name_str_len] = 0;
+
+ /* Create a copy of the font data, with the 'name' table replaced by a table
+ * that names the font with our private F_* name created above.
+ * For simplicity, we just append a new 'name' table and update the sfnt directory;
+ * the original table is left in place, but unused. */
+
+ /* The new table will contain just 5 name IDs: family, style, unique, full, PS.
+ * All of them point to the same name data with our unique F_* name. */
+
+ static const uint16_t name_IDs[] = { 1, 2, 3, 4, 6 };
+
+ const unsigned int name_header_size = 3 * 2; /* NameTableHeader: USHORT x 3 */
+ const unsigned int name_record_size = 6 * 2; /* NameRecord: USHORT x 6 */
+ const unsigned int name_count = sizeof (name_IDs) / sizeof (name_IDs[0]);
+ unsigned int name_table_length = name_header_size +
+ name_count * name_record_size +
+ name_str_len * 2; /* for name data in UTF16BE form */
+
+ unsigned int name_table_offset = (length + 3) & ~3;
+
+ *new_length = name_table_offset + (name_table_length + 3) & ~3;
+ char *new_sfnt_data = (char *) calloc (1, *new_length);
+ if (!new_sfnt_data)
+ return NULL;
+
+ memcpy(new_sfnt_data, orig_sfnt_data, length);
+
+ unsigned char *name_table_data = (unsigned char *) (new_sfnt_data + name_table_offset);
+
+ p = name_table_data;
+ *p++ = 0x00; *p++ = 0x00; /* format = 0 */
+ *p++ = 0x00; *p++ = name_count; /* number of name records */
+ *p++ = 0x00; *p++ = name_header_size + name_count * name_record_size; /* offset to string data */
+
+ for (unsigned int i = 0; i < name_count; i++) {
+ *p++ = 0x00; *p++ = 0x03; /* platformID */
+ *p++ = 0x00; *p++ = 0x01; /* encodingID */
+ *p++ = 0x04; *p++ = 0x09; /* languageID = 0x0409 */
+ *p++ = 0x00; *p++ = name_IDs[i]; /* nameID */
+ *p++ = 0x00; *p++ = name_str_len * 2; /* string length (bytes) */
+ *p++ = 0x00; *p++ = 0x00; /* string offset */
+ }
+
+ for (unsigned int i = 0; i < name_str_len; i++) {
+ /* copy string data from face_name, converting wchar_t to UTF16BE */
+ *p++ = new_name[i] >> 8;
+ *p++ = new_name[i] & 0xff;
+ }
+
+ /* calculate new name table checksum */
+ uint32_t checksum = 0;
+ while (name_table_data < p) {
+ checksum += (name_table_data[0] << 24) +
+ (name_table_data[1] << 16) +
+ (name_table_data[2] << 8) +
+ name_table_data[3];
+ name_table_data += 4;
+ }
+
+ /* adjust name table entry to point to new name table */
+ OT::OpenTypeFontFace *face = (OT::OpenTypeFontFace *) (new_sfnt_data);
+ unsigned int index;
+ if (face->find_table_index (HB_OT_TAG_name, &index))
+ {
+ const OT::TableRecord& record = face->get_table (index);
+ OT::TableRecord *rp = const_cast<OT::TableRecord *> (&record);
+ rp->checkSum.set(checksum);
+ rp->offset.set(name_table_offset);
+ rp->length.set(name_table_length);
+ }
+
+ /* The checkSumAdjustment field in the 'head' table is now wrong,
+ but AFAIK that doesn't actually cause any problems so I haven't
+ bothered to fix it. */
+
+ return new_sfnt_data;
+}
+
hb_uniscribe_shaper_face_data_t *
_hb_uniscribe_shaper_face_data_create (hb_face_t *face)
{
if (unlikely (!blob_length))
DEBUG_MSG (UNISCRIBE, face, "Face has empty blob");
- DWORD num_fonts_installed;
- data->fh = AddFontMemResourceEx ((void *) blob_data, blob_length, 0, &num_fonts_installed);
+ unsigned int new_length;
+ char *new_font_data = _hb_rename_font (blob_data, blob_length, &new_length, data->face_name);
hb_blob_destroy (blob);
+
+ DWORD num_fonts_installed;
+ data->fh = AddFontMemResourceEx (new_font_data, new_length, 0, &num_fonts_installed);
+ free (new_font_data);
if (unlikely (!data->fh)) {
DEBUG_MSG (UNISCRIBE, face, "Face AddFontMemResourceEx() failed");
free (data);
lf->lfHeight = -font->y_scale;
lf->lfCharSet = DEFAULT_CHARSET;
- hb_blob_t *blob = OT::Sanitizer<OT::name>::sanitize (hb_face_reference_table (font->face, HB_TAG ('n','a','m','e')));
- const OT::name *name_table = OT::Sanitizer<OT::name>::lock_instance (blob);
- unsigned int len = name_table->get_name (3, 1, 0x409, 4,
- lf->lfFaceName,
- sizeof (lf->lfFaceName[0]) * LF_FACESIZE)
- / sizeof (lf->lfFaceName[0]);
- hb_blob_destroy (blob);
-
- if (unlikely (!len)) {
- DEBUG_MSG (UNISCRIBE, NULL, "Didn't find English name table entry");
- return false;
- }
- if (unlikely (len >= LF_FACESIZE)) {
- DEBUG_MSG (UNISCRIBE, NULL, "Font name too long");
- return false;
- }
+ hb_face_t *face = font->face;
+ hb_uniscribe_shaper_face_data_t *face_data = HB_SHAPER_DATA_GET (face);
- for (unsigned int i = 0; i < len; i++)
- lf->lfFaceName[i] = hb_be_uint16 (lf->lfFaceName[i]);
- lf->lfFaceName[len] = 0;
+ memcpy (lf->lfFaceName, face_data->face_name, sizeof (lf->lfFaceName));
return true;
}
projects / platform / upstream / libHarfBuzzSharp.git / commitdiff