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-rw-r--r--pdf/xpdf/FTFont.cc176
1 files changed, 127 insertions, 49 deletions
diff --git a/pdf/xpdf/FTFont.cc b/pdf/xpdf/FTFont.cc
index ab101ac..c360eb7 100644
--- a/pdf/xpdf/FTFont.cc
+++ b/pdf/xpdf/FTFont.cc
@@ -2,7 +2,7 @@
//
// FTFont.cc
//
-// Copyright 2001-2002 Glyph & Cog, LLC
+// Copyright 2001-2003 Glyph & Cog, LLC
//
//========================================================================
@@ -48,7 +48,8 @@ FTFontEngine::~FTFontEngine() {
//------------------------------------------------------------------------
FTFontFile::FTFontFile(FTFontEngine *engineA, char *fontFileName,
- char **fontEnc, GBool pdfFontHasEncoding) {
+ char **fontEnc, GBool pdfFontHasEncoding,
+ GBool pdfFontIsSymbolic) {
char *name;
int unicodeCmap, macRomanCmap, msSymbolCmap;
int i, j;
@@ -82,7 +83,9 @@ FTFontFile::FTFontFile(FTFontEngine *engineA, char *fontFileName,
// 1. If the PDF font has an encoding:
// 1a. If the TrueType font has a Microsoft Unicode cmap, use it,
// and use the Unicode indexes, not the char codes.
- // 1b. If the TrueType font has a Macintosh Roman cmap, use it,
+ // 1b. If the PDF font is symbolic and the TrueType font has a
+ // Microsoft Symbol cmap, use it, and use (0xf000 + char code).
+ // 1c. If the TrueType font has a Macintosh Roman cmap, use it,
// and reverse map the char names through MacRomanEncoding to
// get char codes.
// 2. If the PDF font does not have an encoding:
@@ -94,8 +97,9 @@ FTFontFile::FTFontFile(FTFontEngine *engineA, char *fontFileName,
// the best (this shouldn't happen).
unicodeCmap = macRomanCmap = msSymbolCmap = 0xffff;
for (i = 0; i < face->num_charmaps; ++i) {
- if (face->charmaps[i]->platform_id == 3 &&
- face->charmaps[i]->encoding_id == 1) {
+ if ((face->charmaps[i]->platform_id == 3 &&
+ face->charmaps[i]->encoding_id == 1) ||
+ face->charmaps[i]->platform_id == 0) {
unicodeCmap = i;
} else if (face->charmaps[i]->platform_id == 1 &&
face->charmaps[i]->encoding_id == 0) {
@@ -112,6 +116,10 @@ FTFontFile::FTFontFile(FTFontEngine *engineA, char *fontFileName,
if (unicodeCmap != 0xffff) {
i = unicodeCmap;
mode = ftFontModeUnicode;
+ } else if (pdfFontIsSymbolic && msSymbolCmap != 0xffff) {
+ i = msSymbolCmap;
+ mode = ftFontModeCharCodeOffset;
+ charMapOffset = 0xf000;
} else if (macRomanCmap != 0xffff) {
i = macRomanCmap;
mode = ftFontModeCodeMap;
@@ -143,7 +151,9 @@ FTFontFile::FTFontFile(FTFontEngine *engineA, char *fontFileName,
}
FTFontFile::FTFontFile(FTFontEngine *engineA, char *fontFileName,
- Gushort *cidToGIDA, int cidToGIDLenA) {
+ Gushort *cidToGIDA, int cidToGIDLenA, GBool embedded) {
+ int i;
+
ok = gFalse;
engine = engineA;
codeMap = NULL;
@@ -156,11 +166,33 @@ FTFontFile::FTFontFile(FTFontEngine *engineA, char *fontFileName,
cidToGIDLen = cidToGIDLenA;
cidToGID = (Gushort *)gmalloc(cidToGIDLen * sizeof(Gushort));
memcpy(cidToGID, cidToGIDA, cidToGIDLen * sizeof(Gushort));
- mode = ftFontModeCIDToGIDMap;
+ if (!strcmp(face->driver->root.clazz->module_name, "t1cid")) {
+ mode = ftFontModeCID;
+ } else if (!strcmp(face->driver->root.clazz->module_name, "cff")) {
+ mode = ftFontModeCFFCharset;
+ } else if (embedded) {
+ mode = ftFontModeCIDToGIDMap;
+ } else {
+ mode = ftFontModeUnicode;
+ for (i = 0; i < face->num_charmaps; ++i) {
+ if ((face->charmaps[i]->platform_id == 3 &&
+ face->charmaps[i]->encoding_id == 1) ||
+ face->charmaps[i]->platform_id == 0) {
+ break;
+ }
+ }
+ if (i == face->num_charmaps) {
+ i = 0;
+ }
+ FT_Set_Charmap(face, face->charmaps[i]);
+ }
ok = gTrue;
}
-FTFontFile::FTFontFile(FTFontEngine *engineA, char *fontFileName) {
+FTFontFile::FTFontFile(FTFontEngine *engineA, char *fontFileName,
+ GBool embedded) {
+ int i;
+
ok = gFalse;
engine = engineA;
codeMap = NULL;
@@ -172,8 +204,21 @@ FTFontFile::FTFontFile(FTFontEngine *engineA, char *fontFileName) {
}
if (!strcmp(face->driver->root.clazz->module_name, "t1cid")) {
mode = ftFontModeCID;
- } else {
+ } else if (embedded) {
mode = ftFontModeCFFCharset;
+ } else {
+ mode = ftFontModeUnicode;
+ for (i = 0; i < face->num_charmaps; ++i) {
+ if ((face->charmaps[i]->platform_id == 3 &&
+ face->charmaps[i]->encoding_id == 1) ||
+ face->charmaps[i]->platform_id == 0) {
+ break;
+ }
+ }
+ if (i == face->num_charmaps) {
+ i = 0;
+ }
+ FT_Set_Charmap(face, face->charmaps[i]);
}
ok = gTrue;
}
@@ -336,7 +381,9 @@ GBool FTFont::drawChar(Drawable d, int w, int h, GC gc,
XColor xcolor;
int bgR, bgG, bgB;
Gulong colors[5];
- Guchar *p;
+ Guchar *bitmap, *p;
+ GBool tempBitmap;
+ XImage *img;
int pix;
int xOffset, yOffset, x0, y0, x1, y1, gw, gh, w0, h0;
int xx, yy, xx1;
@@ -349,7 +396,8 @@ GBool FTFont::drawChar(Drawable d, int w, int h, GC gc,
}
// generate the glyph pixmap
- if (!(p = getGlyphPixmap(c, u, &xOffset, &yOffset, &gw, &gh))) {
+ if (!(bitmap = getGlyphPixmap(c, u, &xOffset, &yOffset, &gw, &gh,
+ &tempBitmap))) {
return gFalse;
}
@@ -371,7 +419,7 @@ GBool FTFont::drawChar(Drawable d, int w, int h, GC gc,
w0 = w - x0;
}
if (w0 < 0) {
- return gTrue;
+ goto done;
}
if (y0 < 0) {
y1 = -y0;
@@ -382,17 +430,29 @@ GBool FTFont::drawChar(Drawable d, int w, int h, GC gc,
h0 = h - y0;
}
if (h0 < 0) {
- return gTrue;
+ goto done;
+ }
+
+ // getGlyphPixmap may have returned a larger-than-cache-entry
+ // bitmap, in which case we need to allocate a temporary XImage here
+ if (tempBitmap) {
+ if (!(img = XCreateImage(engine->display, engine->visual, engine->depth,
+ ZPixmap, 0, NULL, gw, gh, 8, 0))) {
+ goto done;
+ }
+ img->data = (char *)gmalloc(gh * img->bytes_per_line);
+ } else {
+ img = image;
}
// read the X image
XGetSubImage(engine->display, d, x0, y0, w0, h0, (1 << engine->depth) - 1,
- ZPixmap, image, x1, y1);
+ ZPixmap, img, x1, y1);
if (engine->aa) {
// compute the colors
- xcolor.pixel = XGetPixel(image, x1 + w0/2, y1 + h0/2);
+ xcolor.pixel = XGetPixel(img, x1 + w0/2, y1 + h0/2);
XQueryColor(engine->display, engine->colormap, &xcolor);
bgR = xcolor.red;
bgG = xcolor.green;
@@ -409,6 +469,7 @@ GBool FTFont::drawChar(Drawable d, int w, int h, GC gc,
colors[4] = engine->findColor(r, g, b);
// stuff the glyph pixmap into the X image
+ p = bitmap;
for (yy = 0; yy < gh; ++yy) {
for (xx = 0; xx < gw; ++xx) {
pix = *p++ & 0xff;
@@ -420,7 +481,7 @@ GBool FTFont::drawChar(Drawable d, int w, int h, GC gc,
pix = 4;
}
if (pix > 0) {
- XPutPixel(image, xx, yy, colors[pix]);
+ XPutPixel(img, xx, yy, colors[pix]);
}
}
}
@@ -431,12 +492,13 @@ GBool FTFont::drawChar(Drawable d, int w, int h, GC gc,
colors[1] = engine->findColor(r, g, b);
// stuff the glyph bitmap into the X image
+ p = bitmap;
for (yy = 0; yy < gh; ++yy) {
for (xx = 0; xx < gw; xx += 8) {
pix = *p++;
for (xx1 = xx; xx1 < xx + 8 && xx1 < gw; ++xx1) {
if (pix & 0x80) {
- XPutPixel(image, xx1, yy, colors[1]);
+ XPutPixel(img, xx1, yy, colors[1]);
}
pix <<= 1;
}
@@ -446,13 +508,23 @@ GBool FTFont::drawChar(Drawable d, int w, int h, GC gc,
}
// draw the X image
- XPutImage(engine->display, d, gc, image, x1, y1, x0, y0, w0, h0);
+ XPutImage(engine->display, d, gc, img, x1, y1, x0, y0, w0, h0);
+ if (tempBitmap) {
+ gfree(img->data);
+ img->data = NULL;
+ XDestroyImage(img);
+ }
+ done:
+ if (tempBitmap) {
+ gfree(bitmap);
+ }
return gTrue;
}
Guchar *FTFont::getGlyphPixmap(CharCode c, Unicode u,
- int *x, int *y, int *w, int *h) {
+ int *x, int *y, int *w, int *h,
+ GBool *tempBitmap) {
FT_GlyphSlot slot;
FT_UInt idx;
int rowSize;
@@ -474,6 +546,7 @@ Guchar *FTFont::getGlyphPixmap(CharCode c, Unicode u,
}
}
cacheTags[i+j].mru = 0x8000;
+ *tempBitmap = gFalse;
return cache + (i+j) * glyphSize;
}
}
@@ -504,42 +577,45 @@ Guchar *FTFont::getGlyphPixmap(CharCode c, Unicode u,
ft_render_mode_mono)) {
return gFalse;
}
+
+ // copy the glyph into the cache or a temporary bitmap
*x = -slot->bitmap_left;
*y = slot->bitmap_top;
*w = slot->bitmap.width;
*h = slot->bitmap.rows;
- if (*w > glyphW || *h > glyphH) {
-#if 1 //~ debug
- fprintf(stderr, "Weird FreeType glyph size: %d > %d or %d > %d\n",
- *w, glyphW, *h, glyphH);
-#endif
- return NULL;
+ if (fontFile->engine->aa) {
+ rowSize = *w;
+ } else {
+ rowSize = (*w + 7) >> 3;
}
-
- // store glyph pixmap in cache
- ret = NULL;
- for (j = 0; j < cacheAssoc; ++j) {
- if ((cacheTags[i+j].mru & 0x7fff) == cacheAssoc - 1) {
- cacheTags[i+j].mru = 0x8000;
- cacheTags[i+j].code = c;
- cacheTags[i+j].x = *x;
- cacheTags[i+j].y = *y;
- cacheTags[i+j].w = *w;
- cacheTags[i+j].h = *h;
- if (fontFile->engine->aa) {
- rowSize = *w;
+ if (*w > glyphW || *h > glyphH) {
+ // the glyph doesn't fit in the bounding box -- return a
+ // temporary, uncached bitmap (this shouldn't happen but some
+ // fonts have incorrect bboxes)
+ ret = (Guchar *)gmalloc(*h * rowSize);
+ *tempBitmap = gTrue;
+ } else {
+ // store glyph pixmap in cache
+ ret = NULL; // make gcc happy
+ for (j = 0; j < cacheAssoc; ++j) {
+ if ((cacheTags[i+j].mru & 0x7fff) == cacheAssoc - 1) {
+ cacheTags[i+j].mru = 0x8000;
+ cacheTags[i+j].code = c;
+ cacheTags[i+j].x = *x;
+ cacheTags[i+j].y = *y;
+ cacheTags[i+j].w = *w;
+ cacheTags[i+j].h = *h;
+ ret = cache + (i+j) * glyphSize;
} else {
- rowSize = (*w + 7) >> 3;
- }
- ret = cache + (i+j) * glyphSize;
- for (k = 0, p = ret, q = slot->bitmap.buffer;
- k < slot->bitmap.rows;
- ++k, p += rowSize, q += slot->bitmap.pitch) {
- memcpy(p, q, rowSize);
+ ++cacheTags[i+j].mru;
}
- } else {
- ++cacheTags[i+j].mru;
}
+ *tempBitmap = gFalse;
+ }
+ for (k = 0, p = ret, q = slot->bitmap.buffer;
+ k < slot->bitmap.rows;
+ ++k, p += rowSize, q += slot->bitmap.pitch) {
+ memcpy(p, q, rowSize);
}
return ret;
}
@@ -649,8 +725,10 @@ FT_UInt FTFont::getGlyphIndex(CharCode c, Unicode u) {
idx = FT_Get_Char_Index(fontFile->face, (FT_ULong)c);
break;
case ftFontModeCharCodeOffset:
- idx = FT_Get_Char_Index(fontFile->face,
- (FT_ULong)(c + fontFile->charMapOffset));
+ if ((idx = FT_Get_Char_Index(fontFile->face, (FT_ULong)c)) == 0) {
+ idx = FT_Get_Char_Index(fontFile->face,
+ (FT_ULong)(c + fontFile->charMapOffset));
+ }
break;
case ftFontModeCodeMap:
if (c <= 0xff) {
generated by cgit v0.9.1 at 2024-04-28 12:25:07 (GMT)