usp10: Implement ScriptGetFontScriptTags.

dlls/usp10/shape.c

@@ -3775,3 +3775,63 @@ DWORD CMAP_GetGlyphIndex(HDC hdc, ScriptCache *psc, DWORD utf32c, LPWORD pgi, DW
     }
     return 0;
 }
+
+static HRESULT GSUB_GetFontScriptTags(LPCVOID table, OPENTYPE_TAG searchingFor, int cMaxTags, OPENTYPE_TAG *pScriptTags, int *pcTags, LPCVOID* script_table)
+{
+    const GSUB_ScriptList *script;
+    const GSUB_Header* header = (const GSUB_Header*)table;
+    int i;
+    HRESULT rc = S_OK;
+
+    script = (const GSUB_ScriptList*)((const BYTE*)header + GET_BE_WORD(header->ScriptList));
+
+    *pcTags = 0;
+    TRACE("%i scripts in this font\n",GET_BE_WORD(script->ScriptCount));
+    if (!searchingFor && cMaxTags < GET_BE_WORD(script->ScriptCount))
+        rc = E_OUTOFMEMORY;
+    for (i = 0; i < GET_BE_WORD(script->ScriptCount); i++)
+    {
+        if (searchingFor)
+        {
+            if (strncmp(script->ScriptRecord[i].ScriptTag, (char*)&searchingFor,4)==0)
+            {
+                pScriptTags[0] = MS_MAKE_TAG(script->ScriptRecord[i].ScriptTag[0], script->ScriptRecord[i].ScriptTag[1], script->ScriptRecord[i].ScriptTag[2], script->ScriptRecord[i].ScriptTag[3]);
+                *pcTags = 1;
+                if (script_table)
+                {
+                    int offset = GET_BE_WORD(script->ScriptRecord[i].Script);
+                    *script_table = ((const BYTE*)script + offset);
+                }
+                break;
+            }
+        }
+        else if (i < cMaxTags)
+        {
+            pScriptTags[i] = MS_MAKE_TAG(script->ScriptRecord[i].ScriptTag[0], script->ScriptRecord[i].ScriptTag[1], script->ScriptRecord[i].ScriptTag[2], script->ScriptRecord[i].ScriptTag[3]);
+            *pcTags = *pcTags + 1;
+        }
+    }
+    return rc;
+}
+
+HRESULT SHAPE_GetFontScriptTags( HDC hdc, ScriptCache *psc,
+                                 SCRIPT_ANALYSIS *psa, int cMaxTags,
+                                 OPENTYPE_TAG *pScriptTags, int *pcTags)
+{
+    HRESULT hr;
+    OPENTYPE_TAG searching = 0x00000000;
+
+    if (!psc->GSUB_Table)
+        psc->GSUB_Table = load_gsub_table(hdc);
+
+    if (psa)
+    {
+        if (ShapingData[psa->eScript].otTag[0] != 0)
+            searching = MS_MAKE_TAG(ShapingData[psa->eScript].otTag[0], ShapingData[psa->eScript].otTag[1], ShapingData[psa->eScript].otTag[2], ShapingData[psa->eScript].otTag[3]);
+    }
+
+    hr = GSUB_GetFontScriptTags(psc->GSUB_Table, searching, cMaxTags, pScriptTags, pcTags, NULL);
+    if (FAILED(hr))
+        *pcTags = 0;
+    return hr;
+}

dlls/usp10/tests/usp10.c

@@ -59,6 +59,8 @@ static HRESULT (WINAPI *pScriptShapeOpenType)( HDC hdc, SCRIPT_CACHE *psc, SCRIP
 
 static DWORD (WINAPI *pGetGlyphIndicesW)(HDC hdc, LPCWSTR lpstr, INT count, LPWORD pgi, DWORD flags);
 
+static HRESULT (WINAPI *pScriptGetFontScriptTags)( HDC hdc, SCRIPT_CACHE *psc, SCRIPT_ANALYSIS *psa, int cMaxTags, OPENTYPE_TAG *pScriptTags, int *pcTags);
+
 static inline void _test_items_ok(LPCWSTR string, DWORD cchString,
                          SCRIPT_CONTROL *Control, SCRIPT_STATE *State,
                          DWORD nItems, const itemTest* items, BOOL nItemsToDo,
@@ -2865,6 +2867,46 @@ static void test_newlines(void)
     ok(count == 4, "got %d expected 4\n", count);
 }
 
+static void test_ScriptGetFontFunctions(HDC hdc)
+{
+    HRESULT hr;
+    pScriptGetFontScriptTags = (void*)GetProcAddress(GetModuleHandleA("usp10.dll"), "ScriptGetFontScriptTags");
+    if (!pScriptGetFontScriptTags)
+    {
+        win_skip("ScriptGetFontScriptTags not available on this platform\n");
+    }
+    else
+    {
+        SCRIPT_CACHE sc = NULL;
+        OPENTYPE_TAG tags[5];
+        int count = 0;
+
+        hr = pScriptGetFontScriptTags(hdc, &sc, NULL, 0, NULL, NULL);
+        ok(hr == E_INVALIDARG,"Incorrect return code\n");
+        ok(sc == NULL, "ScriptCache should remain uninitialized\n");
+        hr = pScriptGetFontScriptTags(hdc, &sc, NULL, 0, NULL, &count);
+        ok(hr == E_INVALIDARG,"Incorrect return code\n");
+        ok(sc == NULL, "ScriptCache should remain uninitialized\n");
+        hr = pScriptGetFontScriptTags(hdc, &sc, NULL, 5, tags, NULL);
+        ok(hr == E_INVALIDARG,"Incorrect return code\n");
+        ok(sc == NULL, "ScriptCache should remain uninitialized\n");
+        hr = pScriptGetFontScriptTags(hdc, &sc, NULL, 0, tags, &count);
+        ok(hr == E_INVALIDARG,"Incorrect return code\n");
+        ok(sc == NULL, "ScriptCache should remain uninitialized\n");
+        hr = pScriptGetFontScriptTags(NULL, &sc, NULL, 5, tags, &count);
+        ok(hr == E_PENDING,"Incorrect return code\n");
+        ok(sc == NULL, "ScriptCache should remain uninitialized\n");
+        hr = pScriptGetFontScriptTags(hdc, &sc, NULL, 5, tags, &count);
+        ok((hr == S_OK || hr == E_OUTOFMEMORY),"Incorrect return code\n");
+        if (hr == S_OK)
+            ok(count <= 5, "Count should be less or equal to 5 with S_OK return\n");
+        else if (hr == E_OUTOFMEMORY)
+            ok(count == 0, "Count should be 0 with E_OUTOFMEMORY return\n");
+        ok(sc != NULL, "ScriptCache should be initialized\n");
+        ScriptFreeCache(&sc);
+    }
+}
+
 START_TEST(usp10)
 {
     HWND            hwnd;
@@ -2917,6 +2959,8 @@ START_TEST(usp10)
     test_ScriptBreak();
     test_newlines();
 
+    test_ScriptGetFontFunctions(hdc);
+
     ReleaseDC(hwnd, hdc);
     DestroyWindow(hwnd);
 }

dlls/usp10/usp10.c

@@ -3525,3 +3525,12 @@ HRESULT WINAPI ScriptJustify(const SCRIPT_VISATTR *sva, const int *advance,
     for (i = 0; i < num_glyphs; i++) justify[i] = advance[i];
     return S_OK;
 }
+
+HRESULT WINAPI ScriptGetFontScriptTags( HDC hdc, SCRIPT_CACHE *psc, SCRIPT_ANALYSIS *psa, int cMaxTags, OPENTYPE_TAG *pScriptTags, int *pcTags)
+{
+    HRESULT hr;
+    if (!pScriptTags || !pcTags || cMaxTags == 0) return E_INVALIDARG;
+    if ((hr = init_script_cache(hdc, psc)) != S_OK) return hr;
+
+    return SHAPE_GetFontScriptTags(hdc, (ScriptCache *)*psc, psa, cMaxTags, pScriptTags, pcTags);
+}

dlls/usp10/usp10.spec

@@ -10,7 +10,7 @@
 @ stub ScriptGetFontFeatureTags
 @ stub ScriptGetFontLanguageTags
 @ stdcall ScriptGetFontProperties(long ptr ptr)
-@ stub ScriptGetFontScriptTags
+@ stdcall ScriptGetFontScriptTags(long ptr ptr long ptr ptr)
 @ stdcall ScriptGetGlyphABCWidth(ptr ptr long ptr)
 @ stdcall ScriptGetLogicalWidths(ptr long long ptr ptr ptr ptr)
 @ stdcall ScriptGetProperties(ptr long)

dlls/usp10/usp10_internal.h

@@ -184,6 +184,7 @@ void SHAPE_ApplyDefaultOpentypeFeatures(HDC hdc, ScriptCache *psc, SCRIPT_ANALYS
 HRESULT SHAPE_CheckFontForRequiredFeatures(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa) DECLSPEC_HIDDEN;
 void SHAPE_CharGlyphProp(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, const WCHAR* pwcChars, const INT cChars, const WORD* pwGlyphs, const INT cGlyphs, WORD *pwLogClust, SCRIPT_CHARPROP *pCharProp, SCRIPT_GLYPHPROP *pGlyphProp) DECLSPEC_HIDDEN;
 INT SHAPE_does_GSUB_feature_apply_to_chars(HDC hdc, SCRIPT_ANALYSIS *psa, ScriptCache* psc, const WCHAR *chars, INT write_dir, INT count, const char* feature) DECLSPEC_HIDDEN;
+HRESULT SHAPE_GetFontScriptTags( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, int cMaxTags, OPENTYPE_TAG *pScriptTags, int *pcTags);
 
 void Indic_ReorderCharacters( HDC hdc, SCRIPT_ANALYSIS *psa, ScriptCache* psc, LPWSTR input, int cChars, IndicSyllable **syllables, int *syllable_count, lexical_function lexical_f, reorder_function reorder_f, BOOL modern) DECLSPEC_HIDDEN;
 void Indic_ParseSyllables( HDC hdc, SCRIPT_ANALYSIS *psa, ScriptCache* psc, LPCWSTR input, const int cChar, IndicSyllable **syllables, int *syllable_count, lexical_function lex, BOOL modern);