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authorKarl Berry <karl@freefriends.org>2006-01-17 21:41:51 +0000
committerKarl Berry <karl@freefriends.org>2006-01-17 21:41:51 +0000
commit487ca4806cc046076293cf6cc5fbba0db282bac7 (patch)
tree847b412ab5158dd7bdd7ed7e5a4cc3fbca94be32 /Build/source/texk/ttf2pk/ttflib.c
parenta3d3111bfe26b8e5f5bc6049dfb2a4ca2edc7881 (diff)
texk 1
git-svn-id: svn://tug.org/texlive/trunk@1485 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/texk/ttf2pk/ttflib.c')
-rw-r--r--Build/source/texk/ttf2pk/ttflib.c703
1 files changed, 703 insertions, 0 deletions
diff --git a/Build/source/texk/ttf2pk/ttflib.c b/Build/source/texk/ttf2pk/ttflib.c
new file mode 100644
index 00000000000..820ab2edec7
--- /dev/null
+++ b/Build/source/texk/ttf2pk/ttflib.c
@@ -0,0 +1,703 @@
+/*
+ * ttflib.c
+ *
+ * This file is part of the ttf2pk package.
+ *
+ * Copyright 1997-1999, 2000 by
+ * Loyer Frederic <loyer@ensta.fr>
+ * Werner Lemberg <wl@gnu.org>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h> /* libc ANSI */
+#include <ctype.h>
+
+#include "pklib.h" /* for the `byte' type */
+#include "freetype.h"
+#include "ttfenc.h"
+#include "ttflib.h"
+#include "errormsg.h"
+#include "newobj.h"
+#include "ttf2tfm.h"
+
+#include "extend/ftxpost.h"
+#include "extend/ftxopen.h"
+
+
+#define Macintosh_platform 1
+#define Macintosh_encoding 0
+
+#define Microsoft_platform 3
+#define Microsoft_Symbol_encoding 0
+#define Microsoft_Unicode_encoding 1
+
+#define SCRIPT_kana MAKE_TT_TAG('k', 'a', 'n', 'a')
+#define SCRIPT_hani MAKE_TT_TAG('h', 'a', 'n', 'i')
+#define SCRIPT_hang MAKE_TT_TAG('h', 'a', 'n', 'g')
+
+#define LANGUAGE_JAN MAKE_TT_TAG('J', 'A', 'N', ' ')
+#define LANGUAGE_CHN MAKE_TT_TAG('C', 'H', 'N', ' ')
+#define LANGUAGE_KOR MAKE_TT_TAG('K', 'O', 'R', ' ')
+
+#define FEATURE_vert MAKE_TT_TAG('v', 'e', 'r', 't')
+
+
+TT_Engine engine;
+TT_Face face;
+TT_Instance instance;
+TT_Glyph glyph;
+TT_CharMap char_map;
+
+TT_Outline outline;
+TT_Face_Properties properties;
+TT_BBox bbox;
+
+TT_Post post;
+
+TT_Raster_Map Bit, Bit2;
+void *Bitp, *Bit2p;
+
+int dpi;
+int ptsize;
+
+int x_offset, y_offset;
+int ppem;
+
+TT_Big_Glyph_Metrics metrics;
+
+TT_Matrix matrix1, matrix2;
+
+TTO_GSUBHeader gsub_;
+TTO_GSUBHeader *gsub;
+
+TT_UShort in_string[2];
+TTO_GSUB_String in, out;
+
+Boolean has_gsub;
+
+
+static void
+SetRasterArea(int quiet)
+{
+ int temp1_x, temp1_y, temp2_x, temp2_y;
+
+
+ temp1_x = bbox.xMin / 64; /* scaling F16.6 -> int */
+ temp1_y = bbox.yMin / 64;
+ temp2_x = (bbox.xMax + 63) / 64;
+ temp2_y = (bbox.yMax + 63) / 64;
+
+ x_offset = 5 - temp1_x;
+ y_offset = 5 - temp1_y;
+
+ if (!quiet)
+ printf(" off = (%d, %d)", x_offset, y_offset);
+
+#if 0
+ x_offset = y_offset = 0;
+#endif
+
+ if (!quiet)
+ printf(" bbox = (%d, %d) <-> (%d, %d)\n",
+ temp1_x, temp1_y, temp2_x, temp2_y);
+
+ Bit.rows = temp2_y - temp1_y + 10;
+ Bit.width = temp2_x - temp1_x + 10;
+
+ Bit.cols = (Bit.width + 7) / 8; /* convert to # of bytes */
+ Bit.flow = TT_Flow_Up;
+ Bit.size = Bit.rows * Bit.cols; /* number of bytes in buffer */
+
+ /*
+ * We allocate one more row to have valid pointers for comparison
+ * purposes in pklib.c, making `gcc -fbounds-checking' happy.
+ */
+
+ if (Bitp)
+ free(Bitp);
+ Bitp = mymalloc(Bit.size + Bit.cols);
+ Bit.bitmap = Bitp;
+
+ Bit2 = Bit;
+
+ if (Bit2p)
+ free(Bit2p);
+ Bit2p = mymalloc(Bit.size + Bit.cols);
+ Bit2.bitmap = Bit2p;
+}
+
+
+static void
+FlipBit(void)
+{
+ int y;
+ char *p1, *p2;
+
+ p1 = (char *)Bit.bitmap;
+ p2 = (char *)Bit2.bitmap + Bit2.cols * (Bit2.rows - 1);
+
+ for (y = 0; y < Bit.rows; y++)
+ {
+ memcpy(p2, p1, Bit.cols);
+ p1 += Bit.cols;
+ p2 -= Bit.cols;
+ }
+}
+
+
+#if 0
+
+static void
+Output(TT_Raster_Map Bit)
+{
+ int x;
+ int y;
+ int i;
+
+ char *p, b;
+
+
+ p = Bit.bitmap;
+ printf("====\n");
+
+ for (y = 0; y < Bit.rows; y++)
+ {
+ printf("%3d:", y);
+ for (x = 0; x < Bit.cols; x++)
+ {
+ b = *p++;
+ for(i = 0x80; i; i >>= 1)
+ printf((b & i) ? "x" : ".");
+ }
+ printf("\n");
+ }
+}
+
+#endif /* 0 */
+
+
+void
+TTFopen(char *filename, Font *fnt, int new_dpi, int new_ptsize, Boolean quiet)
+{
+ unsigned short i, num_cmap;
+ unsigned short cmap_plat;
+ unsigned short cmap_enc;
+ TT_Error error;
+
+ TT_UShort script_index, language_index, feature_index;
+ TT_UShort req_feature_index = 0xFFFF;
+
+
+ dpi = new_dpi;
+ ptsize = new_ptsize;
+
+ if ((error = TT_Init_FreeType(&engine)))
+ oops("Cannot initialize FreeType engine (error code = 0x%x).", error);
+
+ if (fnt->PSnames)
+ if ((error = TT_Init_Post_Extension(engine)))
+ oops("Cannot initialize PS name support (error code = 0x%x).", error);
+
+ if (fnt->rotate)
+ if ((error = TT_Init_GSUB_Extension(engine)))
+ oops("Cannot initialize GSUB support (error code = 0x%x).", error);
+
+ /*
+ * Load face.
+ */
+
+ error = TT_Open_Face(engine, filename, &face);
+ if (error)
+ oops("Cannot open `%s'.", filename);
+
+ /*
+ * Get face properties and allocate preloaded arrays.
+ */
+
+ TT_Get_Face_Properties(face, &properties);
+
+ /*
+ * Now we try to open the proper font in a collection.
+ */
+
+ if (fnt->fontindex != 0)
+ {
+ if (properties.num_Faces == 1)
+ warning("This isn't a TrueType collection.\n"
+ "Parameter `Fontindex' is ignored.");
+ else
+ {
+ TT_Close_Face(face);
+ if ((error = TT_Open_Collection(engine, filename,
+ fnt->fontindex, &face)))
+ oops("Cannot open font %lu in TrueType Collection `%s'.",
+ fnt->fontindex, filename);
+ }
+ }
+
+ /*
+ * Create instance.
+ */
+
+ if ((error = TT_New_Instance(face, &instance)))
+ oops("Cannot create instance for `%s' (error code = 0x%x).",
+ filename, error);
+
+ if ((error = TT_Set_Instance_Resolutions(instance, dpi, dpi)))
+ oops("Cannot set device resolutions (error code = 0x%x).");
+
+ if ((error = TT_Set_Instance_CharSize(instance, ptsize * 64)))
+ oops("Cannot set character size (error code = 0x%x).", error);
+
+ ppem = (dpi * ptsize + 36) / 72;
+
+ if (!quiet)
+ printf("dpi = %d, ptsize = %d, ppem = %d\n\n", dpi, ptsize, ppem);
+
+ matrix1.xx = (TT_Fixed)(floor(fnt->efactor * 1024) * (1<<16)/1024);
+ matrix1.xy = (TT_Fixed)(floor(fnt->slant * 1024) * (1<<16)/1024);
+ matrix1.yx = (TT_Fixed)0;
+ matrix1.yy = (TT_Fixed)(1<<16);
+
+ if (fnt->rotate)
+ {
+ matrix2.xx = 0;
+ matrix2.yx = 1L << 16;
+ matrix2.xy = -matrix2.yx;
+ matrix2.yy = matrix2.xx;
+ }
+
+ if ((error = TT_Set_Instance_Transform_Flags(
+ instance,
+ fnt->rotate ? 1 : 0,
+ fnt->efactor != 1.0 ? 1 : 0)))
+ oops("Cannot set transform flags (error code = 0x%x).", error);
+
+ /*
+ * Create glyph container.
+ */
+
+ if ((error = TT_New_Glyph(face, &glyph)))
+ oops("Cannot create glyph container (error code = 0x%x).");
+
+ if (fnt->PSnames != Only)
+ {
+ num_cmap = properties.num_CharMaps;
+ for (i = 0; i < num_cmap; i++)
+ {
+ if ((error = TT_Get_CharMap_ID(face, i, &cmap_plat, &cmap_enc)))
+ oops("Cannot query cmap (error code = 0x%x).", error);
+ if (cmap_plat == fnt->pid && cmap_enc == fnt->eid)
+ break;
+ }
+ if (i == num_cmap)
+ oops("Invalid platform and/or encoding ID.");
+
+ if ((error = TT_Get_CharMap(face, i, &char_map)))
+ oops("Cannot load cmap (error code = 0x%x).", error);
+ }
+
+ if (fnt->PSnames)
+ {
+ if ((error = TT_Load_PS_Names(face, &post)))
+ oops("Cannot load TrueType PS names (error code = 0x%x).", error);
+ }
+ else if (cmap_plat == Microsoft_platform &&
+ cmap_enc == Microsoft_Unicode_encoding)
+ set_encoding_scheme(encUnicode, fnt);
+ else if (cmap_plat == Macintosh_platform &&
+ cmap_enc == Macintosh_encoding)
+ set_encoding_scheme(encMac, fnt);
+ else
+ set_encoding_scheme(encFontSpecific, fnt);
+
+ if (fnt->rotate)
+ {
+ gsub = &gsub_;
+
+ error = TT_Load_GSUB_Table(face, gsub, NULL);
+ if (!error)
+ has_gsub = True;
+ else if (error != TT_Err_Table_Missing)
+ warning("Cannot load GSUB table (error code = 0x%x).", error);
+ else
+ warning("No GSUB data available "
+ "for vertical glyph presentation forms.");
+
+ /* we check for the `vert' feature in Chinese, Japanese, and Korean */
+
+ error = TT_GSUB_Select_Script(gsub,
+ SCRIPT_kana,
+ &script_index);
+ if (error)
+ goto check_hani;
+ error = TT_GSUB_Select_Feature(gsub,
+ FEATURE_vert,
+ script_index,
+ 0xFFFF,
+ &feature_index);
+ if (error)
+ {
+ error = TT_GSUB_Select_Language(gsub,
+ LANGUAGE_JAN,
+ script_index,
+ &language_index,
+ &req_feature_index);
+ if (error)
+ goto check_hani;
+ error = TT_GSUB_Select_Feature(gsub,
+ FEATURE_vert,
+ script_index,
+ language_index,
+ &feature_index);
+ if (error)
+ goto check_hani;
+ else
+ goto Done;
+ }
+ else
+ goto Done;
+
+ check_hani:
+ error = TT_GSUB_Select_Script(gsub,
+ SCRIPT_hani,
+ &script_index);
+ if (error)
+ goto check_hang;
+ error = TT_GSUB_Select_Feature(gsub,
+ FEATURE_vert,
+ script_index,
+ 0xFFFF,
+ &feature_index);
+ if (error)
+ {
+ error = TT_GSUB_Select_Language(gsub,
+ LANGUAGE_CHN,
+ script_index,
+ &language_index,
+ &req_feature_index);
+ if (error)
+ goto check_hang;
+ error = TT_GSUB_Select_Feature(gsub,
+ FEATURE_vert,
+ script_index,
+ language_index,
+ &feature_index);
+ if (error)
+ goto check_hang;
+ else
+ goto Done;
+ }
+ else
+ goto Done;
+
+ check_hang:
+ error = TT_GSUB_Select_Script(gsub,
+ SCRIPT_hang,
+ &script_index);
+ if (error)
+ goto Done;
+ error = TT_GSUB_Select_Feature(gsub,
+ FEATURE_vert,
+ script_index,
+ 0xFFFF,
+ &feature_index);
+ if (error)
+ {
+ error = TT_GSUB_Select_Language(gsub,
+ LANGUAGE_KOR,
+ script_index,
+ &language_index,
+ &req_feature_index);
+ if (error)
+ goto Done;
+ error = TT_GSUB_Select_Feature(gsub,
+ FEATURE_vert,
+ script_index,
+ language_index,
+ &feature_index);
+ }
+
+ Done:
+ if (error)
+ {
+ warning("There is no data for vertical typesetting in GSUB table.");
+ has_gsub = False;
+ }
+
+ if (req_feature_index != 0xFFFF)
+ TT_GSUB_Add_Feature(gsub, req_feature_index, ALL_GLYPHS);
+ TT_GSUB_Add_Feature(gsub, feature_index, ALL_GLYPHS);
+
+ in.length = 1;
+ in.pos = 0;
+ in.string = in_string;
+ in.properties = NULL;
+
+ out.pos = 0;
+ out.allocated = 0;
+ out.string = NULL;
+ out.properties = NULL;
+ }
+}
+
+
+static TT_Error
+LoadTrueTypeChar(Font *fnt,
+ int idx,
+ Boolean hint,
+ Boolean quiet)
+{
+ TT_Error error;
+ int flags;
+
+
+ flags = TTLOAD_SCALE_GLYPH;
+ if (hint)
+ flags |= TTLOAD_HINT_GLYPH;
+
+ error = TT_Load_Glyph(instance, glyph, idx, flags);
+ if (!error)
+ error = TT_Get_Glyph_Big_Metrics(glyph, &metrics);
+ if (!error)
+ error = TT_Get_Glyph_Outline(glyph, &outline);
+ if (!error)
+ {
+ if (fnt->efactor != 1.0 || fnt->slant != 0.0 )
+ TT_Transform_Outline(&outline, &matrix1);
+ if (fnt->rotate)
+ TT_Transform_Outline(&outline, &matrix2);
+ }
+ if (!error)
+ error = TT_Get_Outline_BBox(&outline, &bbox); /* we need the non-
+ grid-fitted bbox */
+ if (fnt->rotate)
+ TT_Translate_Outline(&outline,
+ metrics.vertBearingY - bbox.xMin,
+ -fnt->y_offset * ppem * 64);
+ if (!error)
+ error = TT_Get_Outline_BBox(&outline, &bbox);
+ if (!error)
+ SetRasterArea(quiet);
+ return error;
+}
+
+
+Boolean
+TTFprocess(Font *fnt,
+ long Code,
+ byte **bitmap,
+ int *width, int *height,
+ int *hoff, int *voff,
+ Boolean hinting,
+ Boolean quiet)
+{
+ int Num;
+ TT_Error error;
+
+
+ if (!bitmap || !width || !height || !hoff || !voff)
+ oops("Invalid parameter in call to TTFprocess()");
+
+ if (Code >= 0x1000000)
+ Num = Code & 0xFFFFFF;
+ else
+ {
+ Num = TT_Char_Index(char_map, Code);
+ if (has_gsub)
+ {
+ in_string[0] = Num;
+ error = TT_GSUB_Apply_String(gsub, &in, &out);
+ if (error && error != TTO_Err_Not_Covered)
+ warning("Cannot get the vertical glyph form for glyph index %d.",
+ Num);
+ else
+ Num = out.string[0];
+ }
+ }
+
+ if ((error = LoadTrueTypeChar(fnt, Num, hinting, quiet)) == TT_Err_Ok)
+ {
+ memset(Bit.bitmap, 0, Bit.size);
+ TT_Get_Glyph_Bitmap(glyph, &Bit, x_offset * 64, y_offset * 64);
+
+ FlipBit();
+ *bitmap = Bit2.bitmap;
+ *width = Bit2.width;
+ *height = Bit2.rows;
+ *hoff = x_offset;
+ *voff = y_offset;
+ /* *voff = Bit2.rows - y_offset; */
+ /* printf("%D %d\n", *hoff, *voff); */
+ /* Output(Bit2); */
+ return True;
+ }
+ else
+ return False;
+}
+
+
+/*
+ * We collect first all glyphs addressed via the cmap. Then we fill the
+ * array up with glyphs not in the cmap.
+ *
+ * If PSnames is set to `Only', we get the first 256 glyphs which have
+ * names different from `.notdef', `.null', and `nonmarkingreturn'.
+ *
+ * For nicer output, we return the glyph names in an encoding array.
+ */
+
+encoding *
+TTFget_first_glyphs(Font *fnt, long *array)
+{
+ unsigned int i, j, Num;
+ unsigned int index_array[257]; /* we ignore glyph index 0 */
+ char *n;
+ encoding *e = (encoding *)mymalloc(sizeof (encoding));
+
+
+ if (!array)
+ oops("Invalid parameter in call to TTFget_first_glyphs()");
+
+ for (i = 0; i < 257; i++)
+ index_array[i] = 0;
+
+ j = 0;
+ if (fnt->PSnames != Only)
+ {
+ for (i = 0; i <= 0x16FFFF; i++)
+ {
+ Num = TT_Char_Index(char_map, i);
+ if (Num < 0)
+ oops("cmap mapping failure.");
+ if (Num == 0)
+ continue;
+ if (Num <= 256)
+ index_array[Num] = 1;
+
+ if (fnt->PSnames)
+ (void)TT_Get_PS_Name(face, Num, &n);
+ else
+ n = code_to_adobename(i);
+ if (strcmp(n, ".notdef") == 0)
+ continue;
+ if (strcmp(n, ".null") == 0)
+ continue;
+ if (strcmp(n, "nonmarkingreturn") == 0)
+ continue;
+
+ if (j < 256)
+ {
+ array[j] = i;
+ e->vec[j] = n;
+ }
+ else
+ return e;
+ j++;
+ }
+
+ if (!fnt->PSnames)
+ {
+ for (i = 1; i < properties.num_Glyphs; i++)
+ {
+ if (index_array[i] == 0)
+ {
+ if (j < 256)
+ {
+ array[j] = i | 0x1000000;
+ e->vec[j] = code_to_adobename(i | 0x1000000);
+ }
+ else
+ return e;
+ j++;
+ }
+ }
+ }
+ }
+ else
+ {
+ for (i = 0; i < properties.num_Glyphs; i++)
+ {
+ char *n;
+
+
+ (void)TT_Get_PS_Name(face, i, &n);
+
+ if (strcmp(n, ".notdef") == 0)
+ continue;
+ if (strcmp(n, ".null") == 0)
+ continue;
+ if (strcmp(n, "nonmarkingreturn") == 0)
+ continue;
+
+ if (j < 256)
+ {
+ array[j] = i | 0x1000000;
+ e->vec[j] = n;
+ }
+ else
+ return e;
+ j++;
+ }
+ }
+
+ return NULL; /* never reached */
+}
+
+
+/*
+ * This routine fills `array' with the subfont character codes;
+ * additionally, it tests for valid glyph indices.
+ */
+
+void
+TTFget_subfont(Font *fnt, long *array)
+{
+ int i, j, Num;
+
+
+ if (!fnt || !array)
+ oops("Invalid parameter in call to TTFget_subfont()");
+
+ for (i = 0; i <= 0xFF; i++)
+ {
+ j = fnt->sf_code[i];
+
+ if (j < 0)
+ array[i] = j;
+ else
+ {
+ Num = TT_Char_Index(char_map, j);
+ if (Num < 0)
+ oops("cmap mapping failure.");
+ else
+ array[i] = j;
+ }
+ }
+}
+
+
+long
+TTFsearch_PS_name(char *name)
+{
+ unsigned int i;
+ char *n;
+
+
+ for (i = 0; i < properties.num_Glyphs; i++)
+ {
+ TT_Get_PS_Name(face, i, &n);
+ if (strcmp(name, n) == 0)
+ break;
+ }
+
+ if (i == properties.num_Glyphs)
+ return -1L;
+ else
+ return (long)i;
+}
+
+
+/* end */