[2/2] mlang: Implement IMLangFontLink2_GetFontUnicodeRanges.

[Hans Leidekker]

diff --git a/dlls/mlang/mlang.c b/dlls/mlang/mlang.c
index 6590ea5..180e1ad 100644
--- a/dlls/mlang/mlang.c
+++ b/dlls/mlang/mlang.c
@@ -3357,8 +3357,30 @@ static HRESULT WINAPI fnIMLangFontLink2_MapFont(IMLangFontLink2* This,
 static HRESULT WINAPI fnIMLangFontLink2_GetFontUnicodeRanges(IMLangFontLink2* This,
         HDC hDC, UINT *puiRanges, UNICODERANGE *pUranges)
 {
-    FIXME("(%p)->%p %p %p\n",This, hDC, puiRanges, pUranges);
-    return E_NOTIMPL;
+    DWORD size;
+    GLYPHSET *gs;
+
+    TRACE("(%p)->%p %p %p\n", This, hDC, puiRanges, pUranges);
+
+    if (!puiRanges) return E_INVALIDARG;
+    if (!(size = GetFontUnicodeRanges(hDC, NULL))) return E_FAIL;
+    if (!(gs = HeapAlloc(GetProcessHeap(), 0, size))) return E_OUTOFMEMORY;
+
+    GetFontUnicodeRanges(hDC, gs);
+    *puiRanges = gs->cRanges;
+    if (pUranges)
+    {
+        UINT i;
+        for (i = 0; i < gs->cRanges; i++)
+        {
+            if (i >= *puiRanges) break;
+            pUranges[i].wcFrom = gs->ranges[i].wcLow;
+            pUranges[i].wcTo   = gs->ranges[i].wcLow + gs->ranges[i].cGlyphs;
+        }
+        *puiRanges = i;
+    }
+    HeapFree(GetProcessHeap(), 0, gs);
+    return S_OK;
 }
 
 static HRESULT WINAPI fnIMLangFontLink2_GetScriptFontInfo(IMLangFontLink2* This,
diff --git a/dlls/mlang/tests/mlang.c b/dlls/mlang/tests/mlang.c
index eceb3ab..bd4fd6c 100644
--- a/dlls/mlang/tests/mlang.c
+++ b/dlls/mlang/tests/mlang.c
@@ -1914,6 +1914,49 @@ static void test_CodePageToScriptID(IMLangFontLink2 *font_link)
     }
 }
 
+static void test_GetFontUnicodeRanges(IMLangFontLink2 *font_link)
+{
+    HRESULT hr;
+    UINT count;
+    HFONT hfont, old_hfont;
+    LOGFONTA lf;
+    HDC hdc;
+    UNICODERANGE *ur;
+
+    hdc = CreateCompatibleDC(0);
+    memset(&lf, 0, sizeof(lf));
+    lstrcpyA(lf.lfFaceName, "Arial");
+    hfont = CreateFontIndirectA(&lf);
+    old_hfont = SelectObject(hdc, hfont);
+
+    count = 0;
+    hr = IMLangFontLink2_GetFontUnicodeRanges(font_link, NULL, &count, NULL);
+    ok(hr == E_FAIL, "expected E_FAIL, got 0x%08x\n", hr);
+
+    hr = IMLangFontLink2_GetFontUnicodeRanges(font_link, hdc, NULL, NULL);
+    ok(hr == E_INVALIDARG, "expected E_FAIL, got 0x%08x\n", hr);
+
+    count = 0;
+    hr = IMLangFontLink2_GetFontUnicodeRanges(font_link, hdc, &count, NULL);
+    ok(hr == S_OK, "expected S_OK, got 0x%08x\n", hr);
+    ok(count, "expected count > 0\n");
+
+    ur = HeapAlloc(GetProcessHeap(), 0, sizeof(*ur) * count);
+
+    hr = IMLangFontLink2_GetFontUnicodeRanges(font_link, hdc, &count, ur);
+    ok(hr == S_OK, "expected S_OK, got 0x%08x\n", hr);
+
+    count--;
+    hr = IMLangFontLink2_GetFontUnicodeRanges(font_link, hdc, &count, ur);
+    ok(hr == S_OK, "expected S_OK, got 0x%08x\n", hr);
+
+    HeapFree(GetProcessHeap(), 0, ur);
+
+    SelectObject(hdc, old_hfont);
+    DeleteObject(hfont);
+    DeleteDC(hdc);
+}
+
 START_TEST(mlang)
 {
     IMultiLanguage  *iML = NULL;
@@ -1991,6 +2034,7 @@ START_TEST(mlang)
     if (ret != S_OK || !iMLFL2) return;
 
     test_GetScriptFontInfo(iMLFL2);
+    test_GetFontUnicodeRanges(iMLFL2);
     test_CodePageToScriptID(iMLFL2);
     IMLangFontLink2_Release(iMLFL2);