File 0002-Revert-Require-HarfBuzz-5.1.0.patch of Package libreoffice.30864

From 187d3e94f0bd28b63c934bac84ba7c5fb7beb049 Mon Sep 17 00:00:00 2001
From: Danilo Spinella <oss@danyspin97.org>
Date: Tue, 14 Mar 2023 16:31:09 +0100
Subject: [PATCH 2/2] Revert "Require HarfBuzz 5.1.0"

This reverts commit cbdcc18778f9736ca6f186e2bbb9f0db456b1cee.
---
 configure.ac                            |  1 -
 vcl/inc/font/LogicalFontInstance.hxx    |  2 ++
 vcl/source/font/LogicalFontInstance.cxx | 13 ++++++++++++-
 vcl/source/gdi/CommonSalLayout.cxx      |  9 +++++++--
 4 files changed, 21 insertions(+), 4 deletions(-)

Index: libreoffice-7.5.3.2/configure.ac
===================================================================
--- libreoffice-7.5.3.2.orig/configure.ac
+++ libreoffice-7.5.3.2/configure.ac
@@ -10848,7 +10848,7 @@ AC_SUBST(SYSTEM_LIBORCUS)
 dnl ===================================================================
 dnl HarfBuzz
 dnl ===================================================================
-harfbuzz_required_version=5.1.0
+harfbuzz_required_version=0.93
 
 GRAPHITE_CFLAGS_internal="-I${WORKDIR}/UnpackedTarball/graphite/include -DGRAPHITE2_STATIC"
 GRAPHITE_LIBS_internal="-L${WORKDIR}/LinkTarget/StaticLibrary -lgraphite"
Index: libreoffice-7.5.3.2/vcl/inc/font/LogicalFontInstance.hxx
===================================================================
--- libreoffice-7.5.3.2.orig/vcl/inc/font/LogicalFontInstance.hxx
+++ libreoffice-7.5.3.2/vcl/inc/font/LogicalFontInstance.hxx
@@ -156,8 +156,10 @@ private:
     // The value is initialized and used in NeedOffsetCorrection().
     std::optional<FontFamilyEnum> m_xeFontFamilyEnum;
 
+#if HB_VERSION_ATLEAST(4, 0, 0)
     mutable hb_draw_funcs_t* m_pHbDrawFuncs = nullptr;
     basegfx::B2DPolygon m_aDrawPolygon;
+#endif
 };
 
 inline hb_font_t* LogicalFontInstance::GetHbFont()
Index: libreoffice-7.5.3.2/vcl/source/font/LogicalFontInstance.cxx
===================================================================
--- libreoffice-7.5.3.2.orig/vcl/source/font/LogicalFontInstance.cxx
+++ libreoffice-7.5.3.2/vcl/source/font/LogicalFontInstance.cxx
@@ -54,8 +54,10 @@ LogicalFontInstance::~LogicalFontInstanc
     if (m_pHbFontUntransformed)
         hb_font_destroy(m_pHbFontUntransformed);
 
+#if HB_VERSION_ATLEAST(4, 0, 0)
     if (m_pHbDrawFuncs)
         hb_draw_funcs_destroy(m_pHbDrawFuncs);
+#endif
 }
 
 hb_font_t* LogicalFontInstance::InitHbFont()
@@ -73,10 +75,12 @@ hb_font_t* LogicalFontInstance::InitHbFo
     if (!aVariations.empty())
         hb_font_set_variations(pHbFont, aVariations.data(), aVariations.size());
 
+#if HB_VERSION_ATLEAST(3, 3, 0)
     // If we are applying artificial italic, instruct HarfBuzz to do the same
     // so that mark positioning is also transformed.
     if (NeedsArtificialItalic())
         hb_font_set_synthetic_slant(pHbFont, ARTIFICIAL_ITALIC_SKEW);
+#endif
 
     ImplInitHbFont(pHbFont);
 
@@ -87,6 +91,7 @@ hb_font_t* LogicalFontInstance::GetHbFon
 {
     auto* pHbFont = const_cast<LogicalFontInstance*>(this)->GetHbFont();
 
+#if HB_VERSION_ATLEAST(3, 3, 0)
     if (NeedsArtificialItalic()) // || NeedsArtificialBold()
     {
         if (!m_pHbFontUntransformed)
@@ -98,7 +103,7 @@ hb_font_t* LogicalFontInstance::GetHbFon
         }
         return m_pHbFontUntransformed;
     }
-
+#endif
     return pHbFont;
 }
 
@@ -254,6 +259,7 @@ bool LogicalFontInstance::NeedsArtificia
     return m_aFontSelData.GetItalic() != ITALIC_NONE && m_pFontFace->GetItalic() == ITALIC_NONE;
 }
 
+#if HB_VERSION_ATLEAST(4, 0, 0)
 namespace
 {
 void move_to_func(hb_draw_funcs_t*, void* /*pDrawData*/, hb_draw_state_t*, float to_x, float to_y,
@@ -288,10 +294,12 @@ void close_path_func(hb_draw_funcs_t*, v
     pPoly->clear();
 }
 }
+#endif
 
 bool LogicalFontInstance::GetGlyphOutlineUntransformed(sal_GlyphId nGlyph,
                                                        basegfx::B2DPolyPolygon& rPolyPoly) const
 {
+#if HB_VERSION_ATLEAST(4, 0, 0)
     if (!m_pHbDrawFuncs)
     {
         m_pHbDrawFuncs = hb_draw_funcs_create();
@@ -312,6 +320,9 @@ bool LogicalFontInstance::GetGlyphOutlin
     hb_font_get_glyph_shape(GetHbFontUntransformed(), nGlyph, m_pHbDrawFuncs, &rPolyPoly);
 #endif
     return true;
+#else
+    return false;
+#endif
 }
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
Index: libreoffice-7.5.3.2/vcl/source/gdi/CommonSalLayout.cxx
===================================================================
--- libreoffice-7.5.3.2.orig/vcl/source/gdi/CommonSalLayout.cxx
+++ libreoffice-7.5.3.2/vcl/source/gdi/CommonSalLayout.cxx
@@ -421,10 +421,10 @@ bool GenericSalLayout::LayoutText(vcl::t
             const int nRunLen = nEndRunPos - nMinRunPos;
 
             int nHbFlags = HB_BUFFER_FLAGS_DEFAULT;
-
+#if HB_VERSION_ATLEAST(5, 1, 0)
             // Produce HB_GLYPH_FLAG_SAFE_TO_INSERT_TATWEEL that we use below.
             nHbFlags |= HB_BUFFER_FLAG_PRODUCE_SAFE_TO_INSERT_TATWEEL;
-
+#endif
             if (nMinRunPos == 0)
                 nHbFlags |= HB_BUFFER_FLAG_BOT; /* Beginning-of-text */
             if (nEndRunPos == nLength)
@@ -545,8 +545,13 @@ bool GenericSalLayout::LayoutText(vcl::t
                 if (hb_glyph_info_get_glyph_flags(&pHbGlyphInfos[i]) & HB_GLYPH_FLAG_UNSAFE_TO_BREAK)
                     nGlyphFlags |= GlyphItemFlags::IS_UNSAFE_TO_BREAK;
 
+#if HB_VERSION_ATLEAST(5, 1, 0)
                 if (hb_glyph_info_get_glyph_flags(&pHbGlyphInfos[i]) & HB_GLYPH_FLAG_SAFE_TO_INSERT_TATWEEL)
                     nGlyphFlags |= GlyphItemFlags::IS_SAFE_TO_INSERT_KASHIDA;
+#else
+                // If support is not present, then allow kashida anywhere.
+                nGlyphFlags |= GlyphItemFlags::IS_SAFE_TO_INSERT_KASHIDA;
+#endif
 
                 DeviceCoordinate nAdvance, nXOffset, nYOffset;
                 if (aSubRun.maDirection == HB_DIRECTION_TTB)