dwrite: Store locale name in lower case for text format.

dlls/dwrite/layout.c

 /*
  *    Text format and layout
  *
- * Copyright 2012, 2014-2015 Nikolay Sivov for CodeWeavers
+ * Copyright 2012, 2014-2016 Nikolay Sivov for CodeWeavers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -3923,7 +3923,11 @@ static HRESULT layout_format_from_textformat(struct dwrite_textlayout *layout, I
         layout->format.locale = heap_strdupW(textformat->format.locale);
         layout->format.family_name = heap_strdupW(textformat->format.family_name);
         if (!layout->format.locale || !layout->format.family_name)
+        {
+            heap_free(layout->format.locale);
+            heap_free(layout->format.family_name);
             return E_OUTOFMEMORY;
+        }
 
         if (layout->format.trimmingsign)
             IDWriteInlineObject_AddRef(layout->format.trimmingsign);
@@ -4662,6 +4666,8 @@ HRESULT create_textformat(const WCHAR *family_name, IDWriteFontCollection *colle
     This->format.family_len = strlenW(family_name);
     This->format.locale = heap_strdupW(locale);
     This->format.locale_len = strlenW(locale);
+    /* force locale name to lower case, layout will inherit this modified value */
+    strlwrW(This->format.locale);
     This->format.weight = weight;
     This->format.style = style;
     This->format.fontsize = size;

dlls/dwrite/tests/layout.c

@@ -1999,7 +1999,7 @@ static void test_SetLocaleName(void)
     static const WCHAR eNuSW[] = {'e','N','-','u','S',0};
     static const WCHAR strW[] = {'a','b','c','d',0};
     WCHAR buffW[LOCALE_NAME_MAX_LENGTH+sizeof(strW)/sizeof(WCHAR)];
-    IDWriteTextFormat *format;
+    IDWriteTextFormat *format, *format2;
     IDWriteTextLayout *layout;
     DWRITE_TEXT_RANGE range;
     IDWriteFactory *factory;
@@ -2007,6 +2007,33 @@ static void test_SetLocaleName(void)
 
     factory = create_factory();
 
+    /* create format with mixed case locale name, get it back */
+    hr = IDWriteFactory_CreateTextFormat(factory, tahomaW, NULL, DWRITE_FONT_WEIGHT_NORMAL, DWRITE_FONT_STYLE_NORMAL,
+        DWRITE_FONT_STRETCH_NORMAL, 10.0, eNuSW, &format);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+
+    hr = IDWriteTextFormat_GetLocaleName(format, buffW, sizeof(buffW)/sizeof(buffW[0]));
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+    ok(!lstrcmpW(buffW, enusW), "got %s\n", wine_dbgstr_w(buffW));
+
+    hr = IDWriteFactory_CreateTextLayout(factory, strW, 4, format, 1000.0, 1000.0, &layout);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+
+    hr = IDWriteTextLayout_QueryInterface(layout, &IID_IDWriteTextFormat, (void**)&format2);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+
+    hr = IDWriteTextFormat_GetLocaleName(format2, buffW, sizeof(buffW)/sizeof(buffW[0]));
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+    ok(!lstrcmpW(buffW, enusW), "got %s\n", wine_dbgstr_w(buffW));
+
+    hr = IDWriteTextLayout_GetLocaleName(layout, 0, buffW, sizeof(buffW)/sizeof(buffW[0]), NULL);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+    ok(!lstrcmpW(buffW, enusW), "got %s\n", wine_dbgstr_w(buffW));
+
+    IDWriteTextFormat_Release(format2);
+    IDWriteTextLayout_Release(layout);
+    IDWriteTextFormat_Release(format);
+
     hr = IDWriteFactory_CreateTextFormat(factory, tahomaW, NULL, DWRITE_FONT_WEIGHT_NORMAL, DWRITE_FONT_STYLE_NORMAL,
         DWRITE_FONT_STRETCH_NORMAL, 10.0, enusW, &format);
     ok(hr == S_OK, "got 0x%08x\n", hr);