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Michael R Sweet
2023-11-13 13:39:06 -05:00
parent 43114f43bf
commit 858cc101b6
3 changed files with 62 additions and 6 deletions
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57
pdfio-content.c
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@@ -1410,6 +1410,7 @@ pdfioFileCreateFontObjFromFile(
pdfio_dict_t *cid2gid; // CIDToGIDMap dictionary
pdfio_obj_t *cid2gid_obj; // CIDToGIDMap object
size_t i, // Looping var
start, // Start character
num_cmap; // Number of CMap entries
const int *cmap; // CMap entries
unsigned char *bufptr, // Pointer into buffer
@@ -1418,6 +1419,9 @@ pdfioFileCreateFontObjFromFile(
pdfio_obj_t *type2_obj; // CIDFontType2 font object
pdfio_array_t *descendants; // Decendant font list
pdfio_dict_t *sidict; // CIDSystemInfo dictionary
pdfio_array_t *w_array, // Width array
*temp_array; // Temporary width sub-array
int w0, w1; // Widths
// Create a CIDToGIDMap object for the Unicode font...
if ((cid2gid = pdfioDictCreate(pdf)) == NULL)
@@ -1462,8 +1466,8 @@ pdfioFileCreateFontObjFromFile(
else
{
// Map to specified glyph...
*bufptr++ = (unsigned char)(cmap[i] >> 8);
*bufptr++ = (unsigned char)(cmap[i] & 255);
*bufptr++ = (unsigned char)((cmap[i] + 1) >> 8);
*bufptr++ = (unsigned char)((cmap[i] + 1) & 255);
}
if (bufptr >= bufend)
@@ -1506,9 +1510,55 @@ pdfioFileCreateFontObjFromFile(
return (NULL);
}
// Width array
if ((w_array = pdfioArrayCreate(pdf)) == NULL)
{
ttfDelete(font);
return (NULL);
}
for (start = 0, w0 = ttfGetWidth(font, 0), i = 1; i < 65536; start = i, w0 = w1, i ++)
{
while (i < 65536 && (w1 = ttfGetWidth(font, i)) == w0)
i ++;
if ((i - start) > 1)
{
// Encode a repeating sequence...
pdfioArrayAppendNumber(w_array, start);
pdfioArrayAppendNumber(w_array, i);
pdfioArrayAppendNumber(w_array, w0);
}
else
{
// Encode a non-repeating sequence...
pdfioArrayAppendNumber(w_array, start);
if ((temp_array = pdfioArrayCreate(pdf)) == NULL)
{
ttfDelete(font);
return (NULL);
}
pdfioArrayAppendNumber(temp_array, w0);
for (w0 = w1, i ++; i < 65536; w0 = w1, i ++)
{
if ((w1 = ttfGetWidth(font, i)) == w0 && i < 65535)
break;
pdfioArrayAppendNumber(temp_array, w0);
}
if (i == 65536)
pdfioArrayAppendNumber(temp_array, w0);
pdfioArrayAppendArray(w_array, temp_array);
}
}
// CIDSystemInfo mapping to Adobe UCS2 v0 (Unicode)
pdfioDictSetString(sidict, "Registry", "Adobe");
pdfioDictSetString(sidict, "Ordering", "Identity-H");
pdfioDictSetString(sidict, "Ordering", "Identity");
pdfioDictSetNumber(sidict, "Supplement", 0);
// Then the dictionary for the CID base font...
@@ -1518,6 +1568,7 @@ pdfioFileCreateFontObjFromFile(
pdfioDictSetDict(type2, "CIDSystemInfo", sidict);
pdfioDictSetObj(type2, "CIDToGIDMap", cid2gid_obj);
pdfioDictSetObj(type2, "FontDescriptor", desc_obj);
pdfioDictSetArray(type2, "W", w_array);
if ((type2_obj = pdfioFileCreateObj(pdf, type2)) == NULL)
{