Disable code not needed with new HarfBuzz versions

Change-Id: I0526e2375f41f708ea26b5b81731a59de51825b7
Reviewed-on: https://gerrit.libreoffice.org/20229Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Khaled Hosny <khaledhosny@eglug.org>

vcl/generic/glyphs/gcach_layout.cxx

@@ -34,6 +34,10 @@
 
 #include <com/sun/star/i18n/CharacterIteratorMode.hpp>
 
+#ifndef HB_VERSION_ATLEAST
+#define HB_VERSION_ATLEAST(a,b,c) 0
+#endif
+
 // layout implementation for ServerFont
 ServerFontLayout::ServerFontLayout( ServerFont& rFont )
 :   mrServerFont( rFont )
@@ -162,6 +166,7 @@ static hb_position_t getGlyphAdvanceH(hb_font_t* /*font*/, void* pFontData,
     return rGM.GetCharWidth() << 6;
 }
 
+#if !HB_VERSION_ATLEAST(1, 1, 2)
 static hb_position_t getGlyphAdvanceV(hb_font_t* /*font*/, void* /*pFontData*/,
         hb_codepoint_t /*nGlyphIndex*/,
         void* /*pUserData*/)
@@ -187,6 +192,7 @@ static hb_bool_t getGlyphOriginV(hb_font_t* /*font*/, void* /*pFontData*/,
     // XXX: vertical origin
     return true;
 }
+#endif
 
 static hb_position_t getGlyphKerningH(hb_font_t* /*font*/, void* pFontData,
         hb_codepoint_t nGlyphIndex1, hb_codepoint_t nGlyphIndex2,
@@ -212,6 +218,7 @@ static hb_position_t getGlyphKerningH(hb_font_t* /*font*/, void* pFontData,
     return ret;
 }
 
+#if !HB_VERSION_ATLEAST(1, 1, 2)
 static hb_position_t getGlyphKerningV(hb_font_t* /*font*/, void* /*pFontData*/,
         hb_codepoint_t /*nGlyphIndex1*/, hb_codepoint_t /*nGlyphIndex2*/,
         void* /*pUserData*/)
@@ -219,6 +226,7 @@ static hb_position_t getGlyphKerningV(hb_font_t* /*font*/, void* /*pFontData*/,
     // XXX vertical kerning
     return 0;
 }
+#endif
 
 static hb_bool_t getGlyphExtents(hb_font_t* /*font*/, void* pFontData,
         hb_codepoint_t nGlyphIndex,
@@ -278,17 +286,20 @@ static hb_font_funcs_t* getFontFuncs()
 
     hb_font_funcs_set_glyph_func                (funcs, getFontGlyph, nullptr, nullptr);
     hb_font_funcs_set_glyph_h_advance_func      (funcs, getGlyphAdvanceH, nullptr, nullptr);
+    hb_font_funcs_set_glyph_h_kerning_func      (funcs, getGlyphKerningH, nullptr, nullptr);
+    hb_font_funcs_set_glyph_extents_func        (funcs, getGlyphExtents, nullptr, nullptr);
+    hb_font_funcs_set_glyph_contour_point_func  (funcs, getGlyphContourPoint, nullptr, nullptr);
+#if !HB_VERSION_ATLEAST(1, 1, 2)
     hb_font_funcs_set_glyph_v_advance_func      (funcs, getGlyphAdvanceV, nullptr, nullptr);
     hb_font_funcs_set_glyph_h_origin_func       (funcs, getGlyphOriginH, nullptr, nullptr);
     hb_font_funcs_set_glyph_v_origin_func       (funcs, getGlyphOriginV, nullptr, nullptr);
-    hb_font_funcs_set_glyph_h_kerning_func      (funcs, getGlyphKerningH, nullptr, nullptr);
     hb_font_funcs_set_glyph_v_kerning_func      (funcs, getGlyphKerningV, nullptr, nullptr);
-    hb_font_funcs_set_glyph_extents_func        (funcs, getGlyphExtents, nullptr, nullptr);
-    hb_font_funcs_set_glyph_contour_point_func  (funcs, getGlyphContourPoint, nullptr, nullptr);
+#endif
 
     return funcs;
 }
 
+#if !HB_VERSION_ATLEAST(1, 1, 0)
 // Disabled Unicode compatibility decomposition, see fdo#66715
 static unsigned int unicodeDecomposeCompatibility(hb_unicode_funcs_t* /*ufuncs*/,
                                                   hb_codepoint_t      /*u*/,
@@ -304,6 +315,7 @@ static hb_unicode_funcs_t* getUnicodeFuncs()
     hb_unicode_funcs_set_decompose_compatibility_func(ufuncs, unicodeDecomposeCompatibility, nullptr, nullptr);
     return ufuncs;
 }
+#endif
 
 class HbLayoutEngine : public ServerFontLayoutEngine
 {
@@ -470,9 +482,6 @@ bool HbLayoutEngine::Layout(ServerFontLayout& rLayout, ImplLayoutArgs& rArgs)
             LanguageTag &rTag = rArgs.maLanguageTag;
             OString sLanguage = OUStringToOString( MsLangId::isChinese(rTag.getLanguageType()) ? rTag.getBcp47():rTag.getLanguage() , RTL_TEXTENCODING_UTF8 );
 
-
-            static hb_unicode_funcs_t* pHbUnicodeFuncs = getUnicodeFuncs();
-
             int nHbFlags = HB_BUFFER_FLAGS_DEFAULT;
             if (nMinRunPos == 0)
                 nHbFlags |= HB_BUFFER_FLAG_BOT; /* Beginning-of-text */
@@ -480,7 +489,10 @@ bool HbLayoutEngine::Layout(ServerFontLayout& rLayout, ImplLayoutArgs& rArgs)
                 nHbFlags |= HB_BUFFER_FLAG_EOT; /* End-of-text */
 
             hb_buffer_t *pHbBuffer = hb_buffer_create();
+#if !HB_VERSION_ATLEAST(1, 1, 0)
+            static hb_unicode_funcs_t* pHbUnicodeFuncs = getUnicodeFuncs();
             hb_buffer_set_unicode_funcs(pHbBuffer, pHbUnicodeFuncs);
+#endif
             hb_buffer_set_direction(pHbBuffer, bRightToLeft ? HB_DIRECTION_RTL: HB_DIRECTION_LTR);
             hb_buffer_set_script(pHbBuffer, maHbScript);
             hb_buffer_set_language(pHbBuffer, hb_language_from_string(sLanguage.getStr(), -1));