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Bug 55494 - ScriptItemizeOpenType doesn't exists under Windows XP 

Fallback to older API if OpenType variants are not available.
This commit is contained in:
Behdad Esfahbod 2013-05-28 13:10:51 -04:00
parent f8087ffbad
commit 2a17f9568d
2 changed files with 271 additions and 65 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
configure.ac
View File

@ -291,19 +291,7 @@ AC_ARG_WITH(uniscribe,
[with_uniscribe=no])
have_uniscribe=false
if test "x$with_uniscribe" = "xyes" -o "x$with_uniscribe" = "xauto"; then
AC_MSG_CHECKING([for ScriptShapeOpenType in usp10])
saved_LIBS=$LIBS
LIBS="$LIBS -lusp10 -lgdi32"
AC_LINK_IFELSE([AC_LANG_PROGRAM(
[[
#define _WIN32_WINNT 0x0600
#include <windows.h>
#include <usp10.h>
]],
ScriptShapeOpenType)],
[have_uniscribe=true; AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)])
LIBS=$saved_LIBS
AC_CHECK_HEADERS(usp10.h windows.h, have_uniscribe=true)
fi
if test "x$with_uniscribe" = "xyes" -a "x$have_uniscribe" != "xtrue"; then
AC_MSG_ERROR([uniscribe support requested but not found])

322
src/hb-uniscribe.cc
View File

@ -44,15 +44,215 @@
#endif
/*
DWORD GetFontData(
__in HDC hdc,
__in DWORD dwTable,
__in DWORD dwOffset,
__out LPVOID lpvBuffer,
__in DWORD cbData
typedef HRESULT WINAPI (*SIOT) /*ScriptItemizeOpenType*/(
const WCHAR *pwcInChars,
int cInChars,
int cMaxItems,
const SCRIPT_CONTROL *psControl,
const SCRIPT_STATE *psState,
SCRIPT_ITEM *pItems,
OPENTYPE_TAG *pScriptTags,
int *pcItems
);
*/
typedef HRESULT WINAPI (*SSOT) /*ScriptShapeOpenType*/(
HDC hdc,
SCRIPT_CACHE *psc,
SCRIPT_ANALYSIS *psa,
OPENTYPE_TAG tagScript,
OPENTYPE_TAG tagLangSys,
int *rcRangeChars,
TEXTRANGE_PROPERTIES **rpRangeProperties,
int cRanges,
const WCHAR *pwcChars,
int cChars,
int cMaxGlyphs,
WORD *pwLogClust,
SCRIPT_CHARPROP *pCharProps,
WORD *pwOutGlyphs,
SCRIPT_GLYPHPROP *pOutGlyphProps,
int *pcGlyphs
);
typedef HRESULT WINAPI (*SPOT) /*ScriptPlaceOpenType*/(
HDC hdc,
SCRIPT_CACHE *psc,
SCRIPT_ANALYSIS *psa,
OPENTYPE_TAG tagScript,
OPENTYPE_TAG tagLangSys,
int *rcRangeChars,
TEXTRANGE_PROPERTIES **rpRangeProperties,
int cRanges,
const WCHAR *pwcChars,
WORD *pwLogClust,
SCRIPT_CHARPROP *pCharProps,
int cChars,
const WORD *pwGlyphs,
const SCRIPT_GLYPHPROP *pGlyphProps,
int cGlyphs,
int *piAdvance,
GOFFSET *pGoffset,
ABC *pABC
);
/* Fallback implementations. */
static HRESULT WINAPI
hb_ScriptItemizeOpenType(
const WCHAR *pwcInChars,
int cInChars,
int cMaxItems,
const SCRIPT_CONTROL *psControl,
const SCRIPT_STATE *psState,
SCRIPT_ITEM *pItems,
OPENTYPE_TAG *pScriptTags,
int *pcItems
)
{
{
return ScriptItemize (pwcInChars,
cInChars,
cMaxItems,
psControl,
psState,
pItems,
pcItems);
}
}
static HRESULT WINAPI
hb_ScriptShapeOpenType(
HDC hdc,
SCRIPT_CACHE *psc,
SCRIPT_ANALYSIS *psa,
OPENTYPE_TAG tagScript,
OPENTYPE_TAG tagLangSys,
int *rcRangeChars,
TEXTRANGE_PROPERTIES **rpRangeProperties,
int cRanges,
const WCHAR *pwcChars,
int cChars,
int cMaxGlyphs,
WORD *pwLogClust,
SCRIPT_CHARPROP *pCharProps,
WORD *pwOutGlyphs,
SCRIPT_GLYPHPROP *pOutGlyphProps,
int *pcGlyphs
)
{
SCRIPT_VISATTR *psva = (SCRIPT_VISATTR *) pOutGlyphProps;
return ScriptShape (hdc,
psc,
pwcChars,
cChars,
cMaxGlyphs,
psa,
pwOutGlyphs,
pwLogClust,
psva,
pcGlyphs);
}
static HRESULT WINAPI
hb_ScriptPlaceOpenType(
HDC hdc,
SCRIPT_CACHE *psc,
SCRIPT_ANALYSIS *psa,
OPENTYPE_TAG tagScript,
OPENTYPE_TAG tagLangSys,
int *rcRangeChars,
TEXTRANGE_PROPERTIES **rpRangeProperties,
int cRanges,
const WCHAR *pwcChars,
WORD *pwLogClust,
SCRIPT_CHARPROP *pCharProps,
int cChars,
const WORD *pwGlyphs,
const SCRIPT_GLYPHPROP *pGlyphProps,
int cGlyphs,
int *piAdvance,
GOFFSET *pGoffset,
ABC *pABC
)
{
SCRIPT_VISATTR *psva = (SCRIPT_VISATTR *) pGlyphProps;
return ScriptPlace (hdc,
psc,
pwGlyphs,
cGlyphs,
psva,
psa,
piAdvance,
pGoffset,
pABC);
}
struct hb_uniscribe_shaper_funcs_t {
SIOT ScriptItemizeOpenType;
SSOT ScriptShapeOpenType;
SPOT ScriptPlaceOpenType;
inline void init (void)
{
this->ScriptItemizeOpenType = NULL;
this->ScriptShapeOpenType = NULL;
this->ScriptPlaceOpenType = NULL;
HMODULE hinstLib = GetModuleHandle("usp10.dll");
if (hinstLib)
{
this->ScriptItemizeOpenType = (SIOT) GetProcAddress (hinstLib, "ScriptItemizeOpenType");
this->ScriptShapeOpenType = (SSOT) GetProcAddress (hinstLib, "ScriptShapeOpenType");
this->ScriptPlaceOpenType = (SPOT) GetProcAddress (hinstLib, "ScriptPlaceOpenType");
}
if (!this->ScriptItemizeOpenType ||
!this->ScriptShapeOpenType ||
!this->ScriptPlaceOpenType)
{
DEBUG_MSG (UNISCRIBE, NULL, "OpenType versions of functions not found; falling back.");
this->ScriptItemizeOpenType = hb_ScriptItemizeOpenType;
this->ScriptShapeOpenType = hb_ScriptShapeOpenType;
this->ScriptPlaceOpenType = hb_ScriptPlaceOpenType;
}
}
};
static hb_uniscribe_shaper_funcs_t *uniscribe_funcs;
static inline void
free_uniscribe_funcs (void)
{
free (uniscribe_funcs);
}
static hb_uniscribe_shaper_funcs_t *
hb_uniscribe_shaper_get_funcs (void)
{
retry:
hb_uniscribe_shaper_funcs_t *funcs = (hb_uniscribe_shaper_funcs_t *) hb_atomic_ptr_get (&uniscribe_funcs);
if (unlikely (!funcs))
{
funcs = (hb_uniscribe_shaper_funcs_t *) calloc (1, sizeof (hb_uniscribe_shaper_funcs_t));
if (unlikely (!funcs))
return NULL;
funcs->init ();
if (!hb_atomic_ptr_cmpexch (&uniscribe_funcs, NULL, funcs)) {
free (funcs);
goto retry;
}
#ifdef HAVE_ATEXIT
atexit (free_uniscribe_funcs); /* First person registers atexit() callback. */
#endif
}
return funcs;
}
HB_SHAPER_DATA_ENSURE_DECLARE(uniscribe, face)
@ -65,6 +265,7 @@ HB_SHAPER_DATA_ENSURE_DECLARE(uniscribe, font)
struct hb_uniscribe_shaper_face_data_t {
HANDLE fh;
hb_uniscribe_shaper_funcs_t *funcs;
};
hb_uniscribe_shaper_face_data_t *
@ -74,6 +275,13 @@ _hb_uniscribe_shaper_face_data_create (hb_face_t *face)
if (unlikely (!data))
return NULL;
data->funcs = hb_uniscribe_shaper_get_funcs ();
if (unlikely (!data->funcs))
{
free (data);
return NULL;
}
hb_blob_t *blob = hb_face_reference_blob (face);
unsigned int blob_length;
const char *blob_data = hb_blob_get_data (blob, &blob_length);
@ -240,6 +448,7 @@ _hb_uniscribe_shape (hb_shape_plan_t *shape_plan,
hb_face_t *face = font->face;
hb_uniscribe_shaper_face_data_t *face_data = HB_SHAPER_DATA_GET (face);
hb_uniscribe_shaper_font_data_t *font_data = HB_SHAPER_DATA_GET (font);
hb_uniscribe_shaper_funcs_t *funcs = face_data->funcs;
#define FAIL(...) \
HB_STMT_START { \
@ -291,10 +500,19 @@ retry:
ALLOCATE_ARRAY (WORD, glyphs, glyphs_size);
ALLOCATE_ARRAY (SCRIPT_GLYPHPROP, glyph_props, glyphs_size);
ALLOCATE_ARRAY (SCRIPT_VISATTR, vis_attr, glyphs_size);
ALLOCATE_ARRAY (int, advances, glyphs_size);
ALLOCATE_ARRAY (GOFFSET, offsets, glyphs_size);
ALLOCATE_ARRAY (uint32_t, vis_clusters, glyphs_size);
/* Note:
* We can't touch the contents of glyph_props. Our fallback
* implementations of Shape and Place functions use that buffer
* by casting it to a different type. It works because they
* both agree about it, but if we want to access it here we
* need address that issue first.
*/
#undef ALLOCATE_ARRAY
#define MAX_ITEMS 256
@ -312,14 +530,14 @@ retry:
bidi_state.uBidiLevel = HB_DIRECTION_IS_FORWARD (buffer->props.direction) ? 0 : 1;
bidi_state.fOverrideDirection = 1;
hr = ScriptItemizeOpenType (wchars,
chars_len,
MAX_ITEMS,
&bidi_control,
&bidi_state,
items,
script_tags,
&item_count);
hr = funcs->ScriptItemizeOpenType (wchars,
chars_len,
MAX_ITEMS,
&bidi_control,
&bidi_state,
items,
script_tags,
&item_count);
if (unlikely (FAILED (hr)))
FAIL ("ScriptItemizeOpenType() failed: 0x%08xL", hr);
@ -344,23 +562,23 @@ retry:
unsigned int item_chars_len = items[i + 1].iCharPos - chars_offset;
retry_shape:
hr = ScriptShapeOpenType (font_data->hdc,
&font_data->script_cache,
&items[i].a,
script_tags[i],
language_tag,
range_char_counts,
range_properties,
range_count,
wchars + chars_offset,
item_chars_len,
glyphs_size - glyphs_offset,
/* out */
log_clusters + chars_offset,
char_props + chars_offset,
glyphs + glyphs_offset,
glyph_props + glyphs_offset,
(int *) &glyphs_len);
hr = funcs->ScriptShapeOpenType (font_data->hdc,
&font_data->script_cache,
&items[i].a,
script_tags[i],
language_tag,
range_char_counts,
range_properties,
range_count,
wchars + chars_offset,
item_chars_len,
glyphs_size - glyphs_offset,
/* out */
log_clusters + chars_offset,
char_props + chars_offset,
glyphs + glyphs_offset,
glyph_props + glyphs_offset,
(int *) &glyphs_len);
if (unlikely (items[i].a.fNoGlyphIndex))
FAIL ("ScriptShapeOpenType() set fNoGlyphIndex");
@ -386,25 +604,25 @@ retry:
for (unsigned int j = chars_offset; j < chars_offset + item_chars_len; j++)
log_clusters[j] += glyphs_offset;
hr = ScriptPlaceOpenType (font_data->hdc,
&font_data->script_cache,
&items[i].a,
script_tags[i],
language_tag,
range_char_counts,
range_properties,
range_count,
wchars + chars_offset,
log_clusters + chars_offset,
char_props + chars_offset,
item_chars_len,
glyphs + glyphs_offset,
glyph_props + glyphs_offset,
glyphs_len,
/* out */
advances + glyphs_offset,
offsets + glyphs_offset,
NULL);
hr = funcs->ScriptPlaceOpenType (font_data->hdc,
&font_data->script_cache,
&items[i].a,
script_tags[i],
language_tag,
range_char_counts,
range_properties,
range_count,
wchars + chars_offset,
log_clusters + chars_offset,
char_props + chars_offset,
item_chars_len,
glyphs + glyphs_offset,
glyph_props + glyphs_offset,
glyphs_len,
/* out */
advances + glyphs_offset,
offsets + glyphs_offset,
NULL);
if (unlikely (FAILED (hr)))
FAIL ("ScriptPlaceOpenType() failed: 0x%08xL", hr);