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Diffstat (limited to 'Build/source/libs/gd/gdft.c')
-rw-r--r-- | Build/source/libs/gd/gdft.c | 1626 |
1 files changed, 0 insertions, 1626 deletions
diff --git a/Build/source/libs/gd/gdft.c b/Build/source/libs/gd/gdft.c deleted file mode 100644 index 8326a3db0aa..00000000000 --- a/Build/source/libs/gd/gdft.c +++ /dev/null @@ -1,1626 +0,0 @@ - -/********************************************/ -/* gd interface to freetype library */ -/* */ -/* John Ellson ellson@graphviz.org */ -/********************************************/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <math.h> -#include "gd.h" -#include "gdhelpers.h" -#include "entities.h" - -/* 2.0.10: WIN32, not MSWIN32 */ -#ifndef WIN32 -#include <unistd.h> -#else -#include <io.h> -#define R_OK 04 /* Needed in Windows */ -#endif - -/* number of antialised colors for indexed bitmaps */ -#define NUMCOLORS 8 - -static int fontConfigFlag = 0; - -static char *font_path(char **fontpath, char *name_list); -/* translate a fontconfig fontpattern into a fontpath. - return NULL if OK, else return error string */ -static char *font_pattern(char **fontpath, char *fontpattern); - -/* 2.0.30: move these up here so we can build correctly without freetype - but with fontconfig */ - -/* - * The character (space) used to separate alternate fonts in the - * fontlist parameter to gdImageStringFT. 2.0.18: space was a - * poor choice for this. - */ -#define LISTSEPARATOR ";" - -/* - * DEFAULT_FONTPATH and PATHSEPARATOR are host type dependent and - * are normally set by configure in config.h. These are just - * some last resort values that might match some Un*x system - * if building this version of gd separate from graphviz. - */ -#ifndef DEFAULT_FONTPATH -#if defined(__APPLE__) || (defined(__MWERKS__) && defined(macintosh)) -#define DEFAULT_FONTPATH "/usr/share/fonts/truetype:/System/Library/Fonts:/Library/Fonts" -#else -#define DEFAULT_FONTPATH "/usr/share/fonts/truetype" -#endif -#endif -#ifndef PATHSEPARATOR -#define PATHSEPARATOR ":" -#endif - -#ifndef TRUE -#define FALSE 0 -#define TRUE !FALSE -#endif - -#define MAX(a,b) ((a)>(b)?(a):(b)) -#define MIN(a,b) ((a)<(b)?(a):(b)) - - -BGD_DECLARE(char *) gdImageStringTTF (gdImage * im, int *brect, int fg, char *fontlist, - double ptsize, double angle, int x, int y, char *string) -{ - /* 2.0.6: valid return */ - return gdImageStringFT (im, brect, fg, fontlist, ptsize, - angle, x, y, string); -} - -#ifndef HAVE_LIBFREETYPE -BGD_DECLARE(char *) gdImageStringFTEx (gdImage * im, int *brect, int fg, char *fontlist, - double ptsize, double angle, int x, int y, char *string, - gdFTStringExtraPtr strex) -{ - return "libgd was not built with FreeType font support\n"; -} - -BGD_DECLARE(char *) gdImageStringFT (gdImage * im, int *brect, int fg, char *fontlist, - double ptsize, double angle, int x, int y, char *string) -{ - return "libgd was not built with FreeType font support\n"; -} -#else - -#ifndef HAVE_LIBFONTCONFIG -static char * font_pattern(char **fontpath, char *fontpattern) -{ - return "libgd was not built with FontConfig support\n"; -} -#endif /* HAVE_LIBFONTCONFIG */ - -#include "gdcache.h" -/* 2.0.16 Christophe Thomas: starting with FreeType 2.1.6, this is - mandatory, and it has been supported for a long while. */ -#ifdef HAVE_FT2BUILD_H -#include <ft2build.h> -#include FT_FREETYPE_H -#include FT_GLYPH_H -#include FT_SIZES_H -#else -#include <freetype/freetype.h> -#include <freetype/ftglyph.h> -#include <freetype/ftsizes.h> -#endif - -/* number of fonts cached before least recently used is replaced */ -#define FONTCACHESIZE 6 - -/* number of antialias color lookups cached */ -#define TWEENCOLORCACHESIZE 32 - -/* - * Line separation as a factor of font height. - * No space between if LINESPACE = 1.00 - * Line separation will be rounded up to next pixel row. - */ -#define LINESPACE 1.05 - -typedef struct -{ - char *fontlist; /* key */ - int flags; /* key */ - char *fontpath; - FT_Library *library; - FT_Face face; -} -font_t; - -typedef struct -{ - char *fontlist; /* key */ - int flags; /* key */ - FT_Library *library; -} -fontkey_t; - -typedef struct -{ - int pixel; /* key */ - int bgcolor; /* key */ - int fgcolor; /* key *//* -ve means no antialias */ - gdImagePtr im; /* key */ - int tweencolor; -} -tweencolor_t; - -typedef struct -{ - int pixel; /* key */ - int bgcolor; /* key */ - int fgcolor; /* key *//* -ve means no antialias */ - gdImagePtr im; /* key */ -} -tweencolorkey_t; - -/******************************************************************** - * gdTcl_UtfToUniChar is borrowed from Tcl ... - */ -/* - * tclUtf.c -- - * - * Routines for manipulating UTF-8 strings. - * - * Copyright (c) 1997-1998 Sun Microsystems, Inc. - * - * See the file "license.terms" for information on usage and redistribution - * of this file, and for a DISCLAIMER OF ALL WARRANTIES. - * - * SCCS: @(#) tclUtf.c 1.25 98/01/28 18:02:43 - */ - -/* - *--------------------------------------------------------------------------- - * - * gdTcl_UtfToUniChar -- - * - * Extract the Tcl_UniChar represented by the UTF-8 string. Bad - * UTF-8 sequences are converted to valid Tcl_UniChars and processing - * continues. Equivalent to Plan 9 chartorune(). - * - * The caller must ensure that the source buffer is long enough that - * this routine does not run off the end and dereference non-existent - * memory looking for trail bytes. If the source buffer is known to - * be '\0' terminated, this cannot happen. Otherwise, the caller - * should call Tcl_UtfCharComplete() before calling this routine to - * ensure that enough bytes remain in the string. - * - * Results: - * *chPtr is filled with the Tcl_UniChar, and the return value is the - * number of bytes from the UTF-8 string that were consumed. - * - * Side effects: - * None. - * - *--------------------------------------------------------------------------- - */ - -#ifdef JISX0208 -#include "jisx0208.h" -#endif - -static int comp_entities(const void *e1, const void *e2) { - struct entities_s *en1 = (struct entities_s *) e1; - struct entities_s *en2 = (struct entities_s *) e2; - return strcmp(en1->name, en2->name); -} - -#define Tcl_UniChar int -#define TCL_UTF_MAX 3 -static int -gdTcl_UtfToUniChar (char *str, Tcl_UniChar * chPtr) -/* str is the UTF8 next character pointer */ -/* chPtr is the int for the result */ -{ - int byte; - char entity_name_buf[ENTITY_NAME_LENGTH_MAX+1]; - char *p; - struct entities_s key, *res; - - /* HTML4.0 entities in decimal form, e.g. Å */ - /* or in hexadecimal form, e.g. 水 */ - byte = *((unsigned char *) str); - if (byte == '&') - { - int i, n = 0; - - byte = *((unsigned char *) (str + 1)); - if (byte == '#') - { - byte = *((unsigned char *) (str + 2)); - if (byte == 'x' || byte == 'X') - { - for (i = 3; i < 8; i++) - { - byte = *((unsigned char *) (str + i)); - if (byte >= 'A' && byte <= 'F') - byte = byte - 'A' + 10; - else if (byte >= 'a' && byte <= 'f') - byte = byte - 'a' + 10; - else if (byte >= '0' && byte <= '9') - byte = byte - '0'; - else - break; - n = (n * 16) + byte; - } - } - else - { - for (i = 2; i < 8; i++) - { - byte = *((unsigned char *) (str + i)); - if (byte >= '0' && byte <= '9') - n = (n * 10) + (byte - '0'); - else - break; - } - } - if (byte == ';') - { - *chPtr = (Tcl_UniChar) n; - return ++i; - } - } - else - { - key.name = p = entity_name_buf; - for (i = 1; i < 1 + ENTITY_NAME_LENGTH_MAX; i++) - { - byte = *((unsigned char *) (str + i)); - if (byte == '\0') - break; - if (byte == ';') - { - *p++ = '\0'; - res = bsearch(&key, entities, NR_OF_ENTITIES, - sizeof(entities[0]), *comp_entities); - if (res) - { - *chPtr = (Tcl_UniChar) res->value; - return ++i; - } - break; - } - *p++ = byte; - } - } - } - - /* - * Unroll 1 to 3 byte UTF-8 sequences, use loop to handle longer ones. - */ - - byte = *((unsigned char *) str); -#ifdef JISX0208 - if (0xA1 <= byte && byte <= 0xFE) - { - int ku, ten; - - ku = (byte & 0x7F) - 0x20; - ten = (str[1] & 0x7F) - 0x20; - if ((ku < 1 || ku > 92) || (ten < 1 || ten > 94)) - { - *chPtr = (Tcl_UniChar) byte; - return 1; - } - - *chPtr = (Tcl_UniChar) UnicodeTbl[ku - 1][ten - 1]; - return 2; - } - else -#endif /* JISX0208 */ - if (byte < 0xC0) - { - /* - * Handles properly formed UTF-8 characters between - * 0x01 and 0x7F. Also treats \0 and naked trail - * bytes 0x80 to 0xBF as valid characters representing - * themselves. - */ - - *chPtr = (Tcl_UniChar) byte; - return 1; - } - else if (byte < 0xE0) - { - if ((str[1] & 0xC0) == 0x80) - { - /* - * Two-byte-character lead-byte followed - * by a trail-byte. - */ - - *chPtr = (Tcl_UniChar) (((byte & 0x1F) << 6) | (str[1] & 0x3F)); - return 2; - } - /* - * A two-byte-character lead-byte not followed by trail-byte - * represents itself. - */ - - *chPtr = (Tcl_UniChar) byte; - return 1; - } - else if (byte < 0xF0) - { - if (((str[1] & 0xC0) == 0x80) && ((str[2] & 0xC0) == 0x80)) - { - /* - * Three-byte-character lead byte followed by - * two trail bytes. - */ - - *chPtr = (Tcl_UniChar) (((byte & 0x0F) << 12) - | ((str[1] & 0x3F) << 6) | (str[2] & 0x3F)); - return 3; - } - /* - * A three-byte-character lead-byte not followed by - * two trail-bytes represents itself. - */ - - *chPtr = (Tcl_UniChar) byte; - return 1; - } -#if TCL_UTF_MAX > 3 - else - { - int ch, total, trail; - - total = totalBytes[byte]; - trail = total - 1; - if (trail > 0) - { - ch = byte & (0x3F >> trail); - do - { - str++; - if ((*str & 0xC0) != 0x80) - { - *chPtr = byte; - return 1; - } - ch <<= 6; - ch |= (*str & 0x3F); - trail--; - } - while (trail > 0); - *chPtr = ch; - return total; - } - } -#endif - - *chPtr = (Tcl_UniChar) byte; - return 1; -} - -/********************************************************************/ -/* font cache functions */ - -static int -fontTest (void *element, void *key) -{ - font_t *a = (font_t *) element; - fontkey_t *b = (fontkey_t *) key; - - return (strcmp (a->fontlist, b->fontlist) == 0 && a->flags == b->flags); -} - -static int useFontConfig(int flag) -{ - if (fontConfigFlag) { - return (!(flag & gdFTEX_FONTPATHNAME)); - } else { - return flag & gdFTEX_FONTCONFIG; - } -} - -static void * -fontFetch (char **error, void *key) -{ - font_t *a; - fontkey_t *b = (fontkey_t *) key; - char *suffix; - FT_Error err; - - *error = NULL; - - a = (font_t *) gdMalloc (sizeof (font_t)); - a->fontlist = strdup (b->fontlist); - a->flags = b->flags; - a->library = b->library; - a->fontpath = NULL; - -#ifdef HAVE_LIBFONTCONFIG - if (!useFontConfig(b->flags)) - *error = font_path(&(a->fontpath), a->fontlist); - else - *error = font_pattern(&(a->fontpath), a->fontlist); -#else - *error = font_path(&(a->fontpath), a->fontlist); -#endif /* HAVE_LIBFONTCONFIG */ - if (*error || !a->fontpath || !a->fontpath[0]) - { - /* 2.0.12: TBB: free these. Thanks to Frank Faubert. */ - free (a->fontlist); - if (a->fontpath) - free (a->fontpath); - gdFree (a); - - if (! *error) - *error = "font_path() returned an empty font pathname"; - - return NULL; - } - -#if 0 -fprintf(stderr,"fontpathname=%s\n",fullname); -#endif - - err = FT_New_Face(*b->library, a->fontpath, 0, &a->face); - - /* Read kerning metrics for Postscript fonts. */ - if (!err - && ((suffix = strstr(a->fontpath, ".pfa")) - || (suffix = strstr(a->fontpath, ".pfb"))) - && ((strcpy(suffix, ".afm") && (access(a->fontpath, R_OK) == 0)) - || (strcpy(suffix, ".pfm") && (access(a->fontpath, R_OK) == 0)))) - { - err = FT_Attach_File(a->face, a->fontpath); - } - - if (err) - { - /* 2.0.12: TBB: free these. Thanks to Frank Faubert. */ - free (a->fontlist); - free (a->fontpath); - gdFree (a); - *error = "Could not read font"; - return NULL; - } - - return (void *) a; -} - -static void -fontRelease (void *element) -{ - font_t *a = (font_t *) element; - - FT_Done_Face (a->face); - gdFree (a->fontlist); - gdFree (a->fontpath); - gdFree ((char *) element); -} - -/********************************************************************/ -/* tweencolor cache functions */ - -static int -tweenColorTest (void *element, void *key) -{ - tweencolor_t *a = (tweencolor_t *) element; - tweencolorkey_t *b = (tweencolorkey_t *) key; - - return (a->pixel == b->pixel - && a->bgcolor == b->bgcolor - && a->fgcolor == b->fgcolor && a->im == b->im); -} - -/* - * Computes a color in im's color table that is part way between - * the background and foreground colors proportional to the gray - * pixel value in the range 0-NUMCOLORS. The fg and bg colors must already - * be in the color table for palette images. For truecolor images the - * returned value simply has an alpha component and gdImageAlphaBlend - * does the work so that text can be alpha blended across a complex - * background (TBB; and for real in 2.0.2). - */ -static void * -tweenColorFetch (char **error, void *key) -{ - tweencolor_t *a; - tweencolorkey_t *b = (tweencolorkey_t *) key; - int pixel, npixel, bg, fg; - gdImagePtr im; - - a = (tweencolor_t *) gdMalloc (sizeof (tweencolor_t)); - pixel = a->pixel = b->pixel; - bg = a->bgcolor = b->bgcolor; - fg = a->fgcolor = b->fgcolor; - im = b->im; - - /* if fg is specified by a negative color idx, then don't antialias */ - if (fg < 0) - { - if ((pixel + pixel) >= NUMCOLORS) - a->tweencolor = -fg; - else - a->tweencolor = bg; - } - else - { - npixel = NUMCOLORS - pixel; - if (im->trueColor) - { - /* 2.0.1: use gdImageSetPixel to do the alpha blending work, - or to just store the alpha level. All we have to do here - is incorporate our knowledge of the percentage of this - pixel that is really "lit" by pushing the alpha value - up toward transparency in edge regions. */ - a->tweencolor = gdTrueColorAlpha (gdTrueColorGetRed (fg), - gdTrueColorGetGreen (fg), - gdTrueColorGetBlue (fg), - gdAlphaMax - - (gdTrueColorGetAlpha (fg) * - pixel / NUMCOLORS)); - } - else - { - a->tweencolor = gdImageColorResolve (im, - (pixel * im->red[fg] + - npixel * im->red[bg]) / - NUMCOLORS, - (pixel * im->green[fg] + - npixel * im->green[bg]) / - NUMCOLORS, - (pixel * im->blue[fg] + - npixel * im->blue[bg]) / - NUMCOLORS); - } - } - return (void *) a; -} - -static void -tweenColorRelease (void *element) -{ - gdFree ((char *) element); -} - -/* draw_bitmap - transfers glyph bitmap to GD image */ -static char * -gdft_draw_bitmap (gdCache_head_t * tc_cache, gdImage * im, int fg, - FT_Bitmap bitmap, int pen_x, int pen_y) -{ - unsigned char *pixel = NULL; - int *tpixel = NULL; - int opixel; - int x, y, row, col, pc, pcr; - - tweencolor_t *tc_elem; - tweencolorkey_t tc_key; - - /* copy to image, mapping colors */ - tc_key.fgcolor = fg; - tc_key.im = im; - /* Truecolor version; does not require the cache */ - if (im->trueColor) - { - for (row = 0; row < bitmap.rows; row++) - { - pc = row * bitmap.pitch; - pcr = pc; - y = pen_y + row; - /* clip if out of bounds */ - /* 2.0.16: clipping rectangle, not image bounds */ - if ((y > im->cy2) || (y < im->cy1)) - continue; - for (col = 0; col < bitmap.width; col++, pc++) - { - int level; - if (bitmap.pixel_mode == ft_pixel_mode_grays) - { - /* - * Scale to 128 levels of alpha for gd use. - * alpha 0 is opacity, so be sure to invert at the end - */ - level = (bitmap.buffer[pc] * gdAlphaMax / - (bitmap.num_grays - 1)); - } - else if (bitmap.pixel_mode == ft_pixel_mode_mono) - { - /* 2.0.5: mode_mono fix from Giuliano Pochini */ - level = - ((bitmap. - buffer[(col >> 3) + - pcr]) & (1 << (~col & 0x07))) ? - gdAlphaTransparent : gdAlphaOpaque; - } - else - { - return "Unsupported ft_pixel_mode"; - } - if (level == 0) /* if background */ - continue; - - if ((fg >= 0) && (im->trueColor)) - { - /* Consider alpha in the foreground color itself to be an - upper bound on how opaque things get, when truecolor is - available. Without truecolor this results in far too many - color indexes. */ - level = - level * (gdAlphaMax - - gdTrueColorGetAlpha (fg)) / gdAlphaMax; - } - level = gdAlphaMax - level; /* inverting to get alpha */ - x = pen_x + col; - /* clip if out of bounds */ - /* 2.0.16: clip to clipping rectangle, Matt McNabb */ - if ((x > im->cx2) || (x < im->cx1)) - continue; - /* get pixel location in gd buffer */ - tpixel = &im->tpixels[y][x]; - if (fg < 0) - { - if (level < (gdAlphaMax / 2)) - { - *tpixel = -fg; - } - } - else - { - if (im->alphaBlendingFlag) - { - opixel = *tpixel; - if (gdTrueColorGetAlpha(opixel) != gdAlphaTransparent) - { - *tpixel = gdAlphaBlend (opixel, - (level << 24) + (fg & 0xFFFFFF)); - } - else - { - *tpixel = (level << 24) + (fg & 0xFFFFFF); - } - } - else - { - *tpixel = (level << 24) + (fg & 0xFFFFFF); - } - } - } - } - return (char *) NULL; - } - /* Non-truecolor case, restored to its more or less original form */ - for (row = 0; row < bitmap.rows; row++) - { - int pcr; - pc = row * bitmap.pitch; - pcr = pc; - if (bitmap.pixel_mode == ft_pixel_mode_mono) - pc *= 8; /* pc is measured in bits for monochrome images */ - - y = pen_y + row; - - /* clip if out of bounds */ - if (y > im->cy2 || y < im->cy1) - continue; - - for (col = 0; col < bitmap.width; col++, pc++) - { - if (bitmap.pixel_mode == ft_pixel_mode_grays) - { - /* - * Round to NUMCOLORS levels of antialiasing for - * index color images since only 256 colors are - * available. - */ - tc_key.pixel = ((bitmap.buffer[pc] * NUMCOLORS) - + bitmap.num_grays / 2) - / (bitmap.num_grays - 1); - } - else if (bitmap.pixel_mode == ft_pixel_mode_mono) - { - tc_key.pixel = ((bitmap.buffer[pc / 8] - << (pc % 8)) & 128) ? NUMCOLORS : 0; - /* 2.0.5: mode_mono fix from Giuliano Pochini */ - tc_key.pixel = - ((bitmap. - buffer[(col >> 3) + - pcr]) & (1 << (~col & 0x07))) ? NUMCOLORS : 0; - } - else - { - return "Unsupported ft_pixel_mode"; - } - if (tc_key.pixel == 0) /* if background */ - continue; - - x = pen_x + col; - - /* clip if out of bounds */ - if (x > im->cx2 || x < im->cx1) - continue; - /* get pixel location in gd buffer */ - pixel = &im->pixels[y][x]; - if (tc_key.pixel == NUMCOLORS) - { - /* use fg color directly. gd 2.0.2: watch out for - negative indexes (thanks to David Marwood). */ - *pixel = (fg < 0) ? -fg : fg; - } - else - { - /* find antialised color */ - - tc_key.bgcolor = *pixel; - tc_elem = (tweencolor_t *) gdCacheGet (tc_cache, &tc_key); - *pixel = tc_elem->tweencolor; - } - } - } - return (char *) NULL; -} - -extern int any2eucjp (char *, char *, unsigned int); - -/* Persistent font cache until explicitly cleared */ -/* Fonts can be used across multiple images */ - -/* 2.0.16: thread safety (the font cache is shared) */ -gdMutexDeclare (gdFontCacheMutex); -static gdCache_head_t *fontCache; -static FT_Library library; - -BGD_DECLARE(void) gdFreeFontCache () -{ - gdFontCacheShutdown (); -} - -BGD_DECLARE(void) gdFontCacheShutdown () -{ - if (fontCache) - { - gdMutexShutdown (gdFontCacheMutex); - gdCacheDelete (fontCache); - FT_Done_FreeType (library); - /* 2.0.16: Gustavo Scotti: make sure we don't free this twice */ - fontCache = 0; - } -} - -/********************************************************************/ -/* gdImageStringFT - render a utf8 string onto a gd image */ - -BGD_DECLARE(char *) gdImageStringFT (gdImage * im, int *brect, int fg, char *fontlist, - double ptsize, double angle, int x, int y, char *string) -{ - return gdImageStringFTEx (im, brect, fg, fontlist, - ptsize, angle, x, y, string, 0); -} - -BGD_DECLARE(int) gdFontCacheSetup (void) -{ - if (fontCache) - { - /* Already set up */ - return 0; - } - gdMutexSetup (gdFontCacheMutex); - if (FT_Init_FreeType (&library)) - { - gdMutexShutdown (gdFontCacheMutex); - return -1; - } - fontCache = gdCacheCreate (FONTCACHESIZE, fontTest, fontFetch, fontRelease); - return 0; -} - -/* the platform-independent resolution used for size and position calculations */ -/* the size of the error introduced by rounding is affected by this number */ -#define METRIC_RES 300 - -BGD_DECLARE(char *) gdImageStringFTEx (gdImage * im, int *brect, int fg, char *fontlist, - double ptsize, double angle, int x, int y, char *string, - gdFTStringExtraPtr strex) -{ - FT_Matrix matrix; - FT_Vector penf, oldpenf, delta, total_min = {0,0}, total_max = {0,0}, glyph_min, glyph_max; - FT_Face face; - FT_CharMap charmap; - FT_Glyph image; - FT_GlyphSlot slot; - FT_Error err; - FT_UInt glyph_index, previous; - double sin_a = sin (angle); - double cos_a = cos (angle); - int len, i, ch; - font_t *font; - fontkey_t fontkey; - char *next; - char *tmpstr = 0; - int render = (im && (im->trueColor || (fg <= 255 && fg >= -255))); - FT_BitmapGlyph bm; - /* 2.0.13: Bob Ostermann: don't force autohint, that's just for testing - freetype and doesn't look as good */ - int render_mode = FT_LOAD_DEFAULT; - int encoding, encodingfound; - /* Now tuneable thanks to Wez Furlong */ - double linespace = LINESPACE; - /* 2.0.6: put this declaration with the other declarations! */ - /* - * make a new tweenColorCache on every call - * because caching colormappings between calls - * is not safe. If the im-pointer points to a - * brand new image, the cache gives out bogus - * colorindexes. -- 27.06.2001 <krisku@arrak.fi> - */ - gdCache_head_t *tc_cache; - /* Tuneable horizontal and vertical resolution in dots per inch */ - int hdpi, vdpi, horiAdvance, xshow_alloc = 0, xshow_pos = 0; - FT_Size platform_specific, platform_independent; - - if (strex) - { - if ((strex->flags & gdFTEX_LINESPACE) == gdFTEX_LINESPACE) - { - linespace = strex->linespacing; - } - } - tc_cache = gdCacheCreate (TWEENCOLORCACHESIZE, - tweenColorTest, tweenColorFetch, - tweenColorRelease); - -/***** initialize font library and font cache on first call ******/ - if (!fontCache) - { - if (gdFontCacheSetup () != 0) - { - gdCacheDelete (tc_cache); - return "Failure to initialize font library"; - } - } -/*****/ - gdMutexLock (gdFontCacheMutex); - /* get the font (via font cache) */ - fontkey.fontlist = fontlist; - if (strex) - fontkey.flags = strex->flags & (gdFTEX_FONTPATHNAME | - gdFTEX_FONTCONFIG); - else - fontkey.flags = 0; - fontkey.library = &library; - font = (font_t *) gdCacheGet (fontCache, &fontkey); - if (!font) - { - gdCacheDelete (tc_cache); - gdMutexUnlock (gdFontCacheMutex); - return fontCache->error; - } - face = font->face; /* shortcut */ - slot = face->glyph; /* shortcut */ - - /* - * Added hdpi and vdpi to support images at non-screen resolutions, i.e. 300 dpi TIFF, - * or 100h x 50v dpi FAX format. 2.0.23. - * 2004/02/27 Mark Shackelford, mark.shackelford@acs-inc.com - */ - hdpi = GD_RESOLUTION; - vdpi = GD_RESOLUTION; - encoding = gdFTEX_Unicode; - if (strex) - { - if (strex->flags & gdFTEX_RESOLUTION) - { - hdpi = strex->hdpi; - vdpi = strex->vdpi; - } - if (strex->flags & gdFTEX_XSHOW) - { - strex->xshow = NULL; - } - /* 2.0.12: allow explicit specification of the preferred map; - but we still fall back if it is not available. */ - if (strex->flags & gdFTEX_CHARMAP) - { - encoding = strex->charmap; - } - /* 2.0.29: we can return the font path if desired */ - if (strex->flags & gdFTEX_RETURNFONTPATHNAME) - strex->fontpath = strdup(font->fontpath); - else - strex->fontpath = 0; - } - - matrix.xx = (FT_Fixed) (cos_a * (1 << 16)); - matrix.yx = (FT_Fixed) (sin_a * (1 << 16)); - matrix.xy = -matrix.yx; - matrix.yy = matrix.xx; - - /* set rotation transform */ - FT_Set_Transform (face, &matrix, NULL); - - FT_New_Size (face, &platform_independent); - FT_Activate_Size (platform_independent); - if (FT_Set_Char_Size (face, 0, (FT_F26Dot6)(ptsize*64), METRIC_RES, METRIC_RES)) - { - gdCacheDelete (tc_cache); - gdMutexUnlock (gdFontCacheMutex); - return "Could not set character size"; - } - - if (render) - { - FT_New_Size (face, &platform_specific); - FT_Activate_Size (platform_specific); - if (FT_Set_Char_Size (face, 0, (FT_F26Dot6)(ptsize*64), hdpi, vdpi)) - { - gdCacheDelete (tc_cache); - gdMutexUnlock (gdFontCacheMutex); - return "Could not set character size"; - } - } - - if (fg < 0) - render_mode |= FT_LOAD_MONOCHROME; - - /* find requested charmap */ - encodingfound = 0; - for (i = 0; i < face->num_charmaps; i++) - { - charmap = face->charmaps[i]; - -#if ((defined(FREETYPE_MAJOR)) && (((FREETYPE_MAJOR == 2) && (((FREETYPE_MINOR == 1) && (FREETYPE_PATCH >= 3)) || (FREETYPE_MINOR > 1))) || (FREETYPE_MAJOR > 2))) - if (encoding == gdFTEX_Unicode) - { - if (charmap->encoding == FT_ENCODING_MS_SYMBOL - || charmap->encoding == FT_ENCODING_UNICODE - || charmap->encoding == FT_ENCODING_ADOBE_CUSTOM - || charmap->encoding == FT_ENCODING_ADOBE_STANDARD) - { - encodingfound++; - break; - } - } - else if (encoding == gdFTEX_Big5) - { -/* renamed sometime after freetype-2.1.4 */ -#ifndef FT_ENCODING_BIG5 -#define FT_ENCODING_BIG5 FT_ENCODING_MS_BIG5 -#endif - if (charmap->encoding == FT_ENCODING_BIG5) - { - encodingfound++; - break; - } - } - else if (encoding == gdFTEX_Shift_JIS) - { -/* renamed sometime after freetype-2.1.4 */ -#ifndef FT_ENCODING_SJIS -#define FT_ENCODING_SJIS FT_ENCODING_MS_SJIS -#endif - if (charmap->encoding == FT_ENCODING_SJIS) - { - encodingfound++; - break; - } - } -#else - if (encoding == gdFTEX_Unicode) - { - if ((charmap->platform_id = 3 && charmap->encoding_id == 1) /* Windows Unicode */ - || (charmap->platform_id == 3 && charmap->encoding_id == 0) /* Windows Symbol */ - || (charmap->platform_id == 2 && charmap->encoding_id == 1) /* ISO Unicode */ - || (charmap->platform_id == 0)) /* Apple Unicode */ - { - encodingfound++; - break; - } - } - else if (encoding == gdFTEX_Big5) - { - if (charmap->platform_id == 3 && charmap->encoding_id == 4) /* Windows Big5 */ - { - encodingfound++; - break; - } - } - else if (encoding == gdFTEX_Shift_JIS) - { - if (charmap->platform_id == 3 && charmap->encoding_id == 2) /* Windows Sjis */ - { - encodingfound++; - break; - } - } -#endif - } - if (encodingfound) - { - FT_Set_Charmap(face, charmap); - } - else - { - /* No character set found! */ - gdMutexUnlock (gdFontCacheMutex); - return "No character set found"; - } - -#ifndef JISX0208 - if (encoding == gdFTEX_Shift_JIS) - { -#endif - if ((tmpstr = (char *) gdMalloc (BUFSIZ))) - { - any2eucjp (tmpstr, string, BUFSIZ); - next = tmpstr; - } - else - { - next = string; - } -#ifndef JISX0208 - } - else - { - next = string; - } -#endif - -#if 0 -fprintf(stderr,"dpi=%d,%d metric_res=%d ptsize=%g\n",hdpi,vdpi,METRIC_RES,ptsize); -#endif - - oldpenf.x = oldpenf.y = 0; /* for postscript xshow operator */ - penf.x = penf.y = 0; /* running position of non-rotated glyphs */ - previous = 0; /* index of previous glyph for kerning calculations */ - for (i=0; *next; i++) - { - FT_Activate_Size (platform_independent); - - ch = *next; - - /* carriage returns */ - if (ch == '\r') - { - penf.x = 0; - previous = 0; /* clear kerning flag */ - next++; - continue; - } - /* newlines */ - if (ch == '\n') - { - /* 2.0.13: reset penf.x. Christopher J. Grayce */ - penf.x = 0; - penf.y += linespace * ptsize * 64 * METRIC_RES / 72; - penf.y &= ~63; /* round down to 1/METRIC_RES */ - previous = 0; /* clear kerning flag */ - next++; - continue; - } - - - switch (encoding) - { - case gdFTEX_Unicode: - { - /* use UTF-8 mapping from ASCII */ - len = gdTcl_UtfToUniChar (next, &ch); -/* EAM DEBUG */ -/* TBB: get this exactly right: 2.1.3 *or better*, all possible cases. */ -/* 2.0.24: David R. Morrison: use the more complete ifdef here. */ -#if ((defined(FREETYPE_MAJOR)) && (((FREETYPE_MAJOR == 2) && (((FREETYPE_MINOR == 1) && (FREETYPE_PATCH >= 3)) || (FREETYPE_MINOR > 1))) || (FREETYPE_MAJOR > 2))) - if (charmap->encoding == FT_ENCODING_MS_SYMBOL) -#else - if (charmap->platform_id == 3 && charmap->encoding_id == 0) -#endif /* Freetype 2.1 or better */ - { - /* I do not know the significance of the constant 0xf000. */ - /* It was determined by inspection of the character codes */ - /* stored in Microsoft font symbol.ttf */ - ch |= 0xf000; - } -/* EAM DEBUG */ - next += len; - } - break; - case gdFTEX_Shift_JIS: - { - unsigned char c; - int jiscode; - c = *next; - if (0xA1 <= c && c <= 0xFE) - { - next++; - jiscode = 0x100 * (c & 0x7F) + ((*next) & 0x7F); - - ch = (jiscode >> 8) & 0xFF; - jiscode &= 0xFF; - - if (ch & 1) - jiscode += 0x40 - 0x21; - else - jiscode += 0x9E - 0x21; - - if (jiscode >= 0x7F) - jiscode++; - ch = (ch - 0x21) / 2 + 0x81; - if (ch >= 0xA0) - ch += 0x40; - - ch = (ch << 8) + jiscode; - } - else - { - ch = c & 0xFF; /* don't extend sign */ - } - next++; - } - break; - case gdFTEX_Big5: - { - /* - * Big 5 mapping: - * use "JIS-8 half-width katakana" coding from 8-bit characters. Ref: - * ftp://ftp.ora.com/pub/examples/nutshell/ujip/doc/japan.inf-032092.sjs - */ - ch = (*next) & 0xFF; /* don't extend sign */ - next++; - if (ch >= 161 /* first code of JIS-8 pair */ - && *next) - { /* don't advance past '\0' */ - /* TBB: Fix from Kwok Wah On: & 255 needed */ - ch = (ch * 256) + ((*next) & 255); - next++; - } - } - break; - } - - /* Convert character code to glyph index */ - glyph_index = FT_Get_Char_Index (face, ch); - - /* retrieve kerning distance */ - if ( ! (strex && (strex->flags & gdFTEX_DISABLE_KERNING)) - && ! FT_IS_FIXED_WIDTH(face) - && FT_HAS_KERNING(face) - && previous - && glyph_index) - FT_Get_Kerning (face, previous, glyph_index, ft_kerning_default, &delta); - else - delta.x = delta.y = 0; - - penf.x += delta.x; - - /* When we know the position of the second or subsequent character, - save the (kerned) advance from the preceeding character in the - xshow vector */ - if (i && strex && (strex->flags & gdFTEX_XSHOW)) - { - /* make sure we have enough allocation for two numbers - so we don't have to recheck for the terminating number */ - if (! xshow_alloc) { - xshow_alloc = 100; - strex->xshow = malloc(xshow_alloc); - xshow_pos = 0; - } - else if (xshow_pos + 20 > xshow_alloc) { - xshow_alloc += 100; - strex->xshow = realloc(strex->xshow, xshow_alloc); - } - xshow_pos += sprintf(strex->xshow + xshow_pos, "%g ", - (double)(penf.x - oldpenf.x) * hdpi / (64 * METRIC_RES)); - } - oldpenf.x = penf.x; - - /* load glyph image into the slot (erase previous one) */ - err = FT_Load_Glyph (face, glyph_index, render_mode); - if (err) - { - gdCacheDelete (tc_cache); - gdMutexUnlock (gdFontCacheMutex); - return "Problem loading glyph"; - } - - horiAdvance = slot->metrics.horiAdvance; - - if (brect) - { /* only if need brect */ - - glyph_min.x = penf.x + slot->metrics.horiBearingX; - glyph_min.y = penf.y - slot->metrics.horiBearingY; - -#if 0 - if (ch == ' ') /* special case for trailing space */ - { - glyph_max.x = penf.x + horiAdvance; - } - else - { - glyph_max.x = glyph_min.x + slot->metrics.width; - } -#else - glyph_max.x = penf.x + horiAdvance; -#endif - glyph_max.y = glyph_min.y + slot->metrics.height; - - if (i==0) - { - total_min = glyph_min; - total_max = glyph_max; - } - else - { - if (glyph_min.x < total_min.x) - total_min.x = glyph_min.x; - if (glyph_min.y < total_min.y) - total_min.y = glyph_min.y; - if (glyph_max.x > total_max.x) - total_max.x = glyph_max.x; - if (glyph_max.y > total_max.y) - total_max.y = glyph_max.y; - } - } - - if (render) - { - FT_Activate_Size (platform_specific); - - /* load glyph again into the slot (erase previous one) - this time with scaling */ - err = FT_Load_Glyph (face, glyph_index, render_mode); - if (err) - { - gdCacheDelete (tc_cache); - gdMutexUnlock (gdFontCacheMutex); - return "Problem loading glyph"; - } - - /* load and transform glyph image */ - FT_Get_Glyph (slot, &image); - - if (image->format != ft_glyph_format_bitmap) - { - err = FT_Glyph_To_Bitmap (&image, ft_render_mode_normal, 0, 1); - if (err) - { - gdCacheDelete (tc_cache); - gdMutexUnlock (gdFontCacheMutex); - return "Problem rendering glyph"; - } - } - - /* now, draw to our target surface */ - bm = (FT_BitmapGlyph) image; - /* position rounded down to nearest pixel at current dpi - (the estimate was rounded up to next 1/METRIC_RES, so this should fit) */ - gdft_draw_bitmap (tc_cache, im, fg, bm->bitmap, - x + (penf.x * cos_a + penf.y * sin_a)*hdpi/(METRIC_RES*64) + bm->left, - y - (penf.x * sin_a - penf.y * cos_a)*vdpi/(METRIC_RES*64) - bm->top); - - FT_Done_Glyph (image); - } - - /* record current glyph index for kerning */ - previous = glyph_index; - - penf.x += horiAdvance; - } - - /* Save the (unkerned) advance from the last character in the xshow vector */ - if (strex && (strex->flags & gdFTEX_XSHOW) && strex->xshow) - { - sprintf(strex->xshow + xshow_pos, "%g", - (double)(penf.x - oldpenf.x) * hdpi / (64 * METRIC_RES) ); - } - - if (brect) - { /* only if need brect */ - double dpix, dpiy; - - dpix = 64 * METRIC_RES / hdpi; - dpiy = 64 * METRIC_RES / vdpi; - - /* increase by 1 pixel to allow for rounding */ - total_min.x -= METRIC_RES; - total_min.y -= METRIC_RES; - total_max.x += METRIC_RES; - total_max.y += METRIC_RES; - - /* rotate bounding rectangle, scale and round to int pixels, and translate */ - brect[0] = x + (total_min.x * cos_a + total_max.y * sin_a)/dpix; - brect[1] = y - (total_min.x * sin_a - total_max.y * cos_a)/dpiy; - brect[2] = x + (total_max.x * cos_a + total_max.y * sin_a)/dpix; - brect[3] = y - (total_max.x * sin_a - total_max.y * cos_a)/dpiy; - brect[4] = x + (total_max.x * cos_a + total_min.y * sin_a)/dpix; - brect[5] = y - (total_max.x * sin_a - total_min.y * cos_a)/dpiy; - brect[6] = x + (total_min.x * cos_a + total_min.y * sin_a)/dpix; - brect[7] = y - (total_min.x * sin_a - total_min.y * cos_a)/dpiy; - } - - FT_Done_Size (platform_independent); - if (render) - FT_Done_Size (platform_specific); - - if (tmpstr) - gdFree (tmpstr); - gdCacheDelete (tc_cache); - gdMutexUnlock (gdFontCacheMutex); - return (char *) NULL; -} - -#endif /* HAVE_LIBFREETYPE */ - -#ifdef HAVE_LIBFONTCONFIG -/* Code to find font path, with special mapping for Postscript font names. - * - * Dag Lem <dag@nimrod.no> - */ - -#include <fontconfig/fontconfig.h> - -/* #define NO_POSTSCRIPT_ALIAS 1 */ -#ifndef NO_POSTSCRIPT_ALIAS -typedef struct _PostscriptAlias { - char* name; - char* family; - char* style; -} PostscriptAlias; - -/* This table maps standard Postscript font names to URW Type 1 fonts. - The mapping is converted from Ghostscript (Fontmap.GS) - for use with fontconfig. */ -static PostscriptAlias postscript_alias[] = { - { "AvantGarde-Book", "URW Gothic L", "Book" }, - { "AvantGarde-BookOblique", "URW Gothic L", "Book Oblique" }, - { "AvantGarde-Demi", "URW Gothic L", "Demi" }, - { "AvantGarde-DemiOblique", "URW Gothic L", "Demi Oblique" }, - - { "Bookman-Demi", "URW Bookman L", "Demi Bold" }, - { "Bookman-DemiItalic", "URW Bookman L", "Demi Bold Italic" }, - { "Bookman-Light", "URW Bookman L", "Light" }, - { "Bookman-LightItalic", "URW Bookman L", "Light Italic" }, - - { "Courier", "Nimbus Mono L", "Regular" }, - { "Courier-Oblique", "Nimbus Mono L", "Regular Oblique" }, - { "Courier-Bold", "Nimbus Mono L", "Bold" }, - { "Courier-BoldOblique", "Nimbus Mono L", "Bold Oblique" }, - - { "Helvetica", "Nimbus Sans L", "Regular" }, - { "Helvetica-Oblique", "Nimbus Sans L", "Regular Italic" }, - { "Helvetica-Bold", "Nimbus Sans L", "Bold" }, - { "Helvetica-BoldOblique", "Nimbus Sans L", "Bold Italic" }, - - { "Helvetica-Narrow", "Nimbus Sans L", "Regular Condensed" }, - { "Helvetica-Narrow-Oblique", "Nimbus Sans L", "Regular Condensed Italic" }, - { "Helvetica-Narrow-Bold", "Nimbus Sans L", "Bold Condensed" }, - { "Helvetica-Narrow-BoldOblique", "Nimbus Sans L", "Bold Condensed Italic" }, - - { "NewCenturySchlbk-Roman", "Century Schoolbook L", "Roman" }, - { "NewCenturySchlbk-Italic", "Century Schoolbook L", "Italic" }, - { "NewCenturySchlbk-Bold", "Century Schoolbook L", "Bold" }, - { "NewCenturySchlbk-BoldItalic", "Century Schoolbook L", "Bold Italic" }, - - { "Palatino-Roman", "URW Palladio L", "Roman" }, - { "Palatino-Italic", "URW Palladio L", "Italic" }, - { "Palatino-Bold", "URW Palladio L", "Bold" }, - { "Palatino-BoldItalic", "URW Palladio L", "Bold Italic" }, - - { "Symbol", "Standard Symbols L", "Regular" }, - - { "Times-Roman", "Nimbus Roman No9 L", "Regular" }, - { "Times-Italic", "Nimbus Roman No9 L", "Regular Italic" }, - { "Times-Bold", "Nimbus Roman No9 L", "Medium" }, - { "Times-BoldItalic", "Nimbus Roman No9 L", "Medium Italic" }, - - { "ZapfChancery-MediumItalic", "URW Chancery L", "Medium Italic" }, - - { "ZapfDingbats", "Dingbats", "" }, -}; -#endif - - -static FcPattern* find_font(FcPattern* pattern) -{ - FcResult result; - - FcConfigSubstitute(0, pattern, FcMatchPattern); - FcConfigSubstitute(0, pattern, FcMatchFont); - FcDefaultSubstitute(pattern); - - return FcFontMatch(0, pattern, &result); -} - - -#ifndef NO_POSTSCRIPT_ALIAS -static char* find_postscript_font(FcPattern **fontpattern, char* fontname) -{ - FcPattern* font = NULL; - int i; - - *fontpattern = NULL; - for (i = 0; i < sizeof(postscript_alias)/sizeof(*postscript_alias); i++) { - if (strcmp(fontname, postscript_alias[i].name) == 0) { - FcChar8* family; - - FcPattern* pattern = - FcPatternBuild(0, - FC_FAMILY, FcTypeString, postscript_alias[i].family, - FC_STYLE, FcTypeString, postscript_alias[i].style, - (char*)0); - font = find_font(pattern); - FcPatternDestroy(pattern); - - if (!font || FcPatternGetString(font, FC_FAMILY, 0, &family) != FcResultMatch) - return "fontconfig: Couldn't retrieve font family name."; - - /* Check whether we got the font family we wanted. */ - if (strcmp((const char *)family, postscript_alias[i].family) != 0) { - FcPatternDestroy(font); - return "fontconfig: Didn't find expected font family. Perhaps URW Type 1 fonts need installing?"; - } - break; - } - } - - *fontpattern = font; - return NULL; -} -#endif - -static char * font_pattern(char **fontpath, char *fontpattern) -{ - FcPattern* font = NULL; - FcChar8* file; - FcPattern* pattern; -#ifndef NO_POSTSCRIPT_ALIAS - char *error; -#endif - - *fontpath = NULL; -#ifndef NO_POSTSCRIPT_ALIAS - error = find_postscript_font(&font, fontpattern); - - if (!font) { - if (error) - return error; -#endif - pattern = FcNameParse((const FcChar8 *)fontpattern); - font = find_font(pattern); - FcPatternDestroy(pattern); -#ifndef NO_POSTSCRIPT_ALIAS - } -#endif - - if (!font || FcPatternGetString(font, FC_FILE, 0, &file) != FcResultMatch) - return "fontconfig: Couldn't retrieve font file name."; - - *fontpath = strdup((const char *)file); - - FcPatternDestroy(font); - - return NULL; -} - -#endif /* HAVE_LIBFONTCONFIG */ - -/* Look up font using font names as file names. */ -static char * font_path(char **fontpath, char *name_list) -{ - int font_found = 0; - char *fontsearchpath, *fontlist; - char *fullname = NULL; - char *name, *path, *dir; - char *strtok_ptr; - - /* - * Search the pathlist for any of a list of font names. - */ - *fontpath = NULL; - fontsearchpath = getenv ("GDFONTPATH"); - if (!fontsearchpath) - fontsearchpath = DEFAULT_FONTPATH; - fontlist = strdup (name_list); - - /* - * Must use gd_strtok_r else pointer corrupted by strtok in nested loop. - */ - for (name = gd_strtok_r (fontlist, LISTSEPARATOR, &strtok_ptr); name; - name = gd_strtok_r (0, LISTSEPARATOR, &strtok_ptr)) - { - - /* make a fresh copy each time - strtok corrupts it. */ - path = strdup (fontsearchpath); - /* - * Allocate an oversized buffer that is guaranteed to be - * big enough for all paths to be tested. - */ - /* 2.0.22: Thorben Kundinger: +8 is needed, not +6. */ - fullname = gdRealloc (fullname, - strlen (fontsearchpath) + strlen (name) + 8); - /* if name is an absolute or relative pathname then test directly */ - if (strchr (name, '/') - || (name[0] != 0 && name[1] == ':' - && (name[2] == '/' || name[2] == '\\'))) - { - sprintf (fullname, "%s", name); - if (access (fullname, R_OK) == 0) - { - font_found++; - /* 2.0.16: memory leak fixed, Gustavo Scotti */ - gdFree (path); - break; - } - } - for (dir = strtok (path, PATHSEPARATOR); dir; - dir = strtok (0, PATHSEPARATOR)) - { - if (strchr (name, '.')) - { - sprintf (fullname, "%s/%s", dir, name); - if (access (fullname, R_OK) == 0) - { - font_found++; - break; - } - else - { - continue; - } - } - sprintf (fullname, "%s/%s.ttf", dir, name); - if (access (fullname, R_OK) == 0) - { - font_found++; - break; - } - sprintf (fullname, "%s/%s.pfa", dir, name); - if (access (fullname, R_OK) == 0) - { - font_found++; - break; - } - sprintf (fullname, "%s/%s.pfb", dir, name); - if (access (fullname, R_OK) == 0) - { - font_found++; - break; - } - sprintf (fullname, "%s/%s.dfont", dir, name); - if (access (fullname, R_OK) == 0) - { - font_found++; - break; - } - } - gdFree (path); - if (font_found) - break; - } - gdFree (fontlist); - if (!font_found) - { - free (fullname); - return "Could not find/open font"; - } - - *fontpath = fullname; - return NULL; -} - -BGD_DECLARE(int) gdFTUseFontConfig(int flag) -{ -#ifdef HAVE_LIBFONTCONFIG - fontConfigFlag = 1; - return 1; -#else - return 0; -#endif /* HAVE_LIBFONTCONFIG */ -} - |