Henri Verbeet : usp10: Properly determine the glyph run direction when shaping Script_Arabic.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: f13dea5684f2fe3d93981d98a761995a44bce7bb
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=f13dea5684f2fe3d93981d98a7...

Author: Henri Verbeet 
Date:   Thu Mar  2 09:38:42 2017 +0100

usp10: Properly determine the glyph run direction when shaping Script_Arabic.

In particular, if fLogicalOrder and fRTL are both set, the glyph order is
swapped compared to the character order. In all other cases it's the same.

Signed-off-by: Henri Verbeet 
Signed-off-by: Aric Stewart 
Signed-off-by: Alexandre Julliard

---

dlls/usp10/shape.c | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/dlls/usp10/shape.c b/dlls/usp10/shape.c
index aa98366..ce19465 100644
--- a/dlls/usp10/shape.c
+++ b/dlls/usp10/shape.c
@@ -1055,15 +1055,15 @@ static void ContextualShape_Arabic(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *p
         return;
     }

-    if (!psa->fLogicalOrder && psa->fRTL)
+    if (psa->fLogicalOrder && psa->fRTL)
     {
-        dirR = 1;
-        dirL = -1;
+        dirR = -1;
+        dirL = 1;
     }
     else
     {
-        dirR = -1;
-        dirL = 1;
+        dirR = 1;
+        dirL = -1;
     }

load_ot_tables(hdc, psc);
@@ -2946,20 +2946,20 @@ static void ShapeCharGlyphProp_Arabic( HDC hdc, ScriptCache *psc, SCRIPT_ANALYSI
     spaces = HeapAlloc(GetProcessHeap(),0,cGlyphs);
     memset(spaces,0,cGlyphs);

-    if (!psa->fLogicalOrder && psa->fRTL)
-    {
-        initGlyph = cGlyphs-1;
-        finaGlyph = 0;
-        dirR = 1;
-        dirL = -1;
-    }
-    else
+    if (psa->fLogicalOrder && psa->fRTL)
     {
         initGlyph = 0;
         finaGlyph = cGlyphs-1;
         dirR = -1;
         dirL = 1;
     }
+    else
+    {
+        initGlyph = cGlyphs-1;
+        finaGlyph = 0;
+        dirR = 1;
+        dirL = -1;
+    }

for (i = 0; i < cGlyphs; i++)
     {