Commit 2ad30e9f authored by Elliot Lee's avatar Elliot Lee

Oops.



Oops.
parent 8f4f35b3
SUBDIRS=linux-fb
## Process this file with automake to produce Makefile.in
INCLUDES = @STRIP_BEGIN@ \
-DG_LOG_DOMAIN=\"Gdk\" \
-I$(top_srcdir) \
-I$(top_srcdir)/gdk \
-I$(top_builddir)/gdk \
-I$(top_srcdir)/gdk/linux-fb \
@GTK_DEBUG_FLAGS@ \
@GTK_XIM_FLAGS@ \
@GTK_LOCALE_FLAGS@ \
@GLIB_CFLAGS@ \
@PANGO_CFLAGS@ \
@STRIP_END@
LDFLAGS = @STRIP_BEGIN@ \
@GLIB_LIBS@ \
@PANGO_CFLAGS@ \
-L/gnome2/lib \
-lfreetype \
-lm \
@STRIP_END@
moduledir = $(libdir)/pango/modules
module_LTLIBRARIES = fb-basic.la
fb_basic_la_LDFLAGS = -export-dynamic -avoid-version -module
fb_basic_la_LIBADD = $(PANGO_LIBS) -L$(top_builddir)/gdk/.libs -lgdk-linux-fb
fb_basic_la_SOURCES = $(sources)
fb_basic_la_SOURCES = basic.c
EXTRA_DIST = \
tables-big.i \
tables-small.i
/* Pango
* basic.c:
*
* Copyright (C) 1999 Red Hat Software
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <iconv.h>
#include <glib.h>
#include <pango/pango.h>
#include "gdkprivate-fb.h"
#include <unicode.h>
#include <fribidi/fribidi.h>
PangoGlyph
pango_fb_get_unknown_glyph(PangoFont *font)
{
return '*';
}
typedef struct _CharRange CharRange;
typedef struct _Charset Charset;
typedef struct _CharCache CharCache;
typedef struct _MaskTable MaskTable;
#define MAX_CHARSETS 32
typedef PangoGlyph (*ConvFunc) (CharCache *cache,
Charset *charset,
const gchar *input);
struct _CharRange
{
guint16 start;
guint16 end;
guint16 charsets;
};
struct _MaskTable
{
int n_subfonts;
Charset **charsets;
};
#define MAX_CHARSETS 32
struct _CharCache
{
#if 0
MaskTable *mask_tables[256];
#endif
iconv_t converters[MAX_CHARSETS];
};
struct _Charset
{
int index;
char *id;
char *x_charset;
ConvFunc conv_func;
};
static PangoGlyph conv_8bit (CharCache *cache,
Charset *charset,
const char *input);
static PangoGlyph conv_euc (CharCache *cache,
Charset *charset,
const char *input);
static PangoGlyph conv_ucs4 (CharCache *cache,
Charset *charset,
const char *input);
/* From pango/utils.h */
typedef guint16 GUChar2;
typedef guint32 GUChar4;
gboolean _pango_utf8_iterate (const char *cur,
const char **next,
GUChar4 *wc_out);
GUChar2 *_pango_utf8_to_ucs2 (const char *str,
gint len);
GUChar4 *_pango_utf8_to_ucs4 (const char *str,
int len);
int _pango_guchar4_to_utf8 (GUChar4 c,
char *outbuf);
int _pango_utf8_len (const char *str,
gint limit);
#include "tables-big.i"
static PangoEngineInfo script_engines[] = {
{
"BasicScriptEngineLang",
PANGO_ENGINE_TYPE_LANG,
PANGO_RENDER_TYPE_NONE,
basic_ranges, G_N_ELEMENTS(basic_ranges)
},
{
"BasicScriptEngineFB",
PANGO_ENGINE_TYPE_SHAPE,
"PangoRenderTypeFB",
basic_ranges, G_N_ELEMENTS(basic_ranges)
}
};
static gint n_script_engines = G_N_ELEMENTS (script_engines);
/*
* Language script engine
*/
static void
basic_engine_break (const char *text,
gint len,
PangoAnalysis *analysis,
PangoLogAttr *attrs)
{
}
static PangoEngine *
basic_engine_lang_new ()
{
PangoEngineLang *result;
result = g_new (PangoEngineLang, 1);
result->engine.id = "BasicScriptEngine";
result->engine.type = PANGO_ENGINE_TYPE_LANG;
result->engine.length = sizeof (result);
result->script_break = basic_engine_break;
return (PangoEngine *)result;
}
/*
* FB window system script engine portion
*/
static CharCache *
char_cache_new (void)
{
CharCache *result;
int i;
result = g_new0 (CharCache, 1);
for (i=0; i < MAX_CHARSETS; i++)
result->converters[i] = (iconv_t)-1;
return result;
}
static void
char_cache_free (CharCache *cache)
{
int i;
#if 0
for (i=0; i < 256; i++)
if (cache->mask_tables[i])
{
g_free (cache->mask_tables[i]->subfonts);
g_free (cache->mask_tables[i]->charsets);
g_free (cache->mask_tables[i]);
}
#endif
for (i=0; i<MAX_CHARSETS; i++)
if (cache->converters[i] != (iconv_t)-1)
iconv_close (cache->converters[i]);
g_free (cache);
}
PangoGlyph
find_char (CharCache *cache, PangoFont *font, GUChar4 wc, const char *input)
{
return FT_Get_Char_Index(PANGO_FB_FONT(font)->ftf, wc);
}
static void
set_glyph (PangoFont *font, PangoGlyphString *glyphs, int i, int offset, PangoGlyph glyph)
{
PangoRectangle logical_rect;
glyphs->glyphs[i].glyph = glyph;
glyphs->glyphs[i].geometry.x_offset = 0;
glyphs->glyphs[i].geometry.y_offset = 0;
glyphs->log_clusters[i] = offset;
pango_font_get_glyph_extents (font, glyphs->glyphs[i].glyph, NULL, &logical_rect);
glyphs->glyphs[i].geometry.width = logical_rect.width;
}
static iconv_t
find_converter (CharCache *cache, Charset *charset)
{
iconv_t cd = cache->converters[charset->index];
if (cd == (iconv_t)-1)
{
cd = iconv_open (charset->id, "UTF-8");
g_assert (cd != (iconv_t)-1);
cache->converters[charset->index] = cd;
}
return cd;
}
static PangoGlyph
conv_8bit (CharCache *cache,
Charset *charset,
const char *input)
{
iconv_t cd;
char outbuf;
const char *p;
const char *inptr = input;
size_t inbytesleft;
char *outptr = &outbuf;
size_t outbytesleft = 1;
_pango_utf8_iterate (input, &p, NULL);
inbytesleft = p - input;
cd = find_converter (cache, charset);
iconv (cd, (const char **)&inptr, &inbytesleft, &outptr, &outbytesleft);
return (guchar)outbuf;
}
static PangoGlyph
conv_euc (CharCache *cache,
Charset *charset,
const char *input)
{
iconv_t cd;
char outbuf[2];
const char *p;
const char *inptr = input;
size_t inbytesleft;
char *outptr = outbuf;
size_t outbytesleft = 2;
_pango_utf8_iterate (input, &p, NULL);
inbytesleft = p - input;
cd = find_converter (cache, charset);
iconv (cd, &inptr, &inbytesleft, &outptr, &outbytesleft);
if ((guchar)outbuf[0] < 128)
return outbuf[0];
else
return ((guchar)outbuf[0] & 0x7f) * 256 + ((guchar)outbuf[1] & 0x7f);
}
static PangoGlyph
conv_ucs4 (CharCache *cache,
Charset *charset,
const char *input)
{
GUChar4 wc;
unicode_get_utf8 (input, &wc);
return wc;
}
static void
swap_range (PangoGlyphString *glyphs, int start, int end)
{
int i, j;
for (i = start, j = end - 1; i < j; i++, j--)
{
PangoGlyphInfo glyph_info;
gint log_cluster;
glyph_info = glyphs->glyphs[i];
glyphs->glyphs[i] = glyphs->glyphs[j];
glyphs->glyphs[j] = glyph_info;
log_cluster = glyphs->log_clusters[i];
glyphs->log_clusters[i] = glyphs->log_clusters[j];
glyphs->log_clusters[j] = log_cluster;
}
}
static CharCache *
get_char_cache (PangoFont *font)
{
GQuark cache_id = g_quark_from_string ("basic-char-cache");
CharCache *cache = g_object_get_qdata (G_OBJECT (font), cache_id);
if (!cache)
{
cache = char_cache_new ();
g_object_set_qdata_full (G_OBJECT (font), cache_id,
cache, (GDestroyNotify)char_cache_free);
}
return cache;
}
static void
basic_engine_shape (PangoFont *font,
const char *text,
gint length,
PangoAnalysis *analysis,
PangoGlyphString *glyphs)
{
int n_chars;
int i;
const char *p;
const char *next;
CharCache *cache;
g_return_if_fail (font != NULL);
g_return_if_fail (text != NULL);
g_return_if_fail (length >= 0);
g_return_if_fail (analysis != NULL);
cache = get_char_cache (font);
n_chars = unicode_strlen (text, length);
pango_glyph_string_set_size (glyphs, n_chars);
p = text;
for (i=0; i < n_chars; i++)
{
GUChar4 wc;
FriBidiChar mirrored_ch;
PangoGlyph index;
char buf[6];
const char *input;
_pango_utf8_iterate (p, &next, &wc);
input = p;
if (analysis->level % 2)
if (fribidi_get_mirror_char (wc, &mirrored_ch))
{
wc = mirrored_ch;
_pango_guchar4_to_utf8 (wc, buf);
input = buf;
}
if (wc == 0x200B || wc == 0x200E || wc == 0x200F) /* Zero-width characters */
{
set_glyph (font, glyphs, i, p - text, 0);
}
else
{
index = find_char (cache, font, wc, input);
if (index)
{
set_glyph (font, glyphs, i, p - text, index);
if (unicode_type (wc) == UNICODE_NON_SPACING_MARK)
{
if (i > 0)
{
PangoRectangle logical_rect, ink_rect;
glyphs->glyphs[i].geometry.width = MAX (glyphs->glyphs[i-1].geometry.width,
glyphs->glyphs[i].geometry.width);
glyphs->glyphs[i-1].geometry.width = 0;
glyphs->log_clusters[i] = glyphs->log_clusters[i-1];
/* Some heuristics to try to guess how overstrike glyphs are
* done and compensate
*/
pango_font_get_glyph_extents (font, glyphs->glyphs[i].glyph, &ink_rect, &logical_rect);
if (logical_rect.width == 0 && ink_rect.x == 0)
glyphs->glyphs[i].geometry.x_offset = (glyphs->glyphs[i].geometry.width - ink_rect.width) / 2;
}
}
}
else
set_glyph (font, glyphs, i, p - text, pango_fb_get_unknown_glyph (font));
}
p = next;
}
/* Simple bidi support... may have separate modules later */
if (analysis->level % 2)
{
int start, end;
/* Swap all glyphs */
swap_range (glyphs, 0, n_chars);
/* Now reorder glyphs within each cluster back to LTR */
for (start=0; start<n_chars;)
{
end = start;
while (end < n_chars &&
glyphs->log_clusters[end] == glyphs->log_clusters[start])
end++;
swap_range (glyphs, start, end);
start = end;
}
}
}
static PangoCoverage *
basic_engine_get_coverage (PangoFont *font,
const char *lang)
{
CharCache *cache = get_char_cache (font);
PangoCoverage *result = pango_coverage_new ();
GUChar4 wc;
for (wc = 0; wc < 65536; wc++)
{
char buf[6];
_pango_guchar4_to_utf8 (wc, buf);
if (find_char (cache, font, wc, buf))
pango_coverage_set (result, wc, PANGO_COVERAGE_EXACT);
}
return result;
}
static PangoEngine *
basic_engine_fb_new ()
{
PangoEngineShape *result;
result = g_new (PangoEngineShape, 1);
result->engine.id = "BasicScriptEngineFB";
result->engine.type = PANGO_ENGINE_TYPE_LANG;
result->engine.length = sizeof (result);
result->script_shape = basic_engine_shape;
result->get_coverage = basic_engine_get_coverage;
return (PangoEngine *)result;
}
/* The following three functions provide the public module API for
* Pango
*/
#ifdef MODULE_PREFIX
#define MODULE_ENTRY(func) _pango_basic_##func
#else
#define MODULE_ENTRY(func) func
#endif
void
MODULE_ENTRY(script_engine_list) (PangoEngineInfo **engines, gint *n_engines)
{
*engines = script_engines;
*n_engines = n_script_engines;
}
PangoEngine *
MODULE_ENTRY(script_engine_load) (const char *id)
{
if (!strcmp (id, "BasicScriptEngineFB"))
return basic_engine_fb_new ();
else if (!strcmp (id, "BasicScriptEngineLang"))
return basic_engine_lang_new ();
else
return NULL;
}
void
MODULE_ENTRY(script_engine_unload) (PangoEngine *engine)
{
}
This source diff could not be displayed because it is too large. You can view the blob instead.
This diff is collapsed.
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment