vcl/generic/glyphs/gcach_layout.cxx | 20 +++++++++++++++++++-
vcl/source/gdi/sallayout.cxx | 2 +-
2 files changed, 20 insertions(+), 2 deletions(-)
New commits:
commit c72955bcb196574f7bc682e7aa301264a8a54635
Author: Khaled Hosny <khaledho...@eglug.org>
Date: Sat May 25 11:12:56 2013 +0200
Revert "Fix improper glyph positioning with old fonts"
This reverts commit cef3f3aac2f7a372e796deac4ee3e8155c5eb697.
The previous commit addressed the real issue.
Change-Id: I802e5f19e4a4991c316135f3984a1b9a6533a104
diff --git a/vcl/source/gdi/sallayout.cxx b/vcl/source/gdi/sallayout.cxx
index 31b01b9..bd7a326 100644
--- a/vcl/source/gdi/sallayout.cxx
+++ b/vcl/source/gdi/sallayout.cxx
@@ -1098,7 +1098,7 @@ void GenericSalLayout::ApplyDXArray( ImplLayoutArgs&
rArgs )
if( m_GlyphItems[j].IsClusterStart() )
break;
if( !m_GlyphItems[j].IsDiacritic() ) // #i99367# ignore
diacritics
- nOldClusterWidth += m_GlyphItems[j].mnNewWidth;
+ nOldClusterWidth += m_GlyphItems[j].mnNewWidth -
m_GlyphItems[j].mnXOffset;
nNewClusterWidth += pNewGlyphWidths[j];
}
const int nDiff = nNewClusterWidth - nOldClusterWidth;
commit 90c6531caa3ec530ef6e9bf1081d289b16fe53ba
Author: Khaled Hosny <khaledho...@eglug.org>
Date: Sat May 25 02:24:36 2013 +0200
A hack to fix mark placement in old fonts
We need a way to recognize non spacing marks in fonts lacking GDEF table
(like old Arabic fonts), so I just check for zero advance width and hope
nothing elsewhere will break...
Change-Id: I6fa848e97ba24d71fc9a381ae439e0fb98e50419
diff --git a/vcl/generic/glyphs/gcach_layout.cxx
b/vcl/generic/glyphs/gcach_layout.cxx
index 6ac7fd4..4fd4cf4 100644
--- a/vcl/generic/glyphs/gcach_layout.cxx
+++ b/vcl/generic/glyphs/gcach_layout.cxx
@@ -428,7 +428,25 @@ bool HbLayoutEngine::layout(ServerFontLayout& rLayout,
ImplLayoutArgs& rArgs)
if (bInCluster)
nGlyphFlags |= GlyphItem::IS_IN_CLUSTER;
- if (hb_ot_layout_get_glyph_class(mpHbFace, nGlyphIndex) ==
HB_OT_LAYOUT_GLYPH_CLASS_MARK)
+ bool bDiacritic = false;
+ if (hb_ot_layout_has_glyph_classes(mpHbFace))
+ {
+ // the font has GDEF table
+ if (hb_ot_layout_get_glyph_class(mpHbFace, nGlyphIndex) ==
HB_OT_LAYOUT_GLYPH_CLASS_MARK)
+ bDiacritic = true;
+ }
+ else
+ {
+ // the font lacks GDEF table
+ // HACK: if the resolved glyph advance is zero assume it is a
+ // combining mark. The whole IS_DIACRITIC concept is a hack to
+ // fix the other hacks we use to second-guess glyph advances in
+ // ApplyDXArray and the likes and it needs to die
+ if (pHbPositions[i].x_advance == 0)
+ bDiacritic = true;
+ }
+
+ if (bDiacritic)
nGlyphFlags |= GlyphItem::IS_DIACRITIC;
int32_t nXOffset = pHbPositions[i].x_offset >> 6;
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