[freetype2] ewaldhew-cleaned 16afafb 20/36: [psaux] Add missing objects. (2/2)

[Hew Yih Shiuan Ewald]

branch: ewaldhew-cleaned
commit 16afafb508e0d61024db016725e4a5a3ee8d39c1
Author: Ewald Hew <address@hidden>
Commit: Ewald Hew <address@hidden>

    [psaux] Add missing objects. (2/2)
    
    Synthesize a SubFont object for Type 1 fonts. This is used in the 
interpreter
    to access Private dict data, which are stored in different places for Type 1
    and CFF. This allows the same data to be used in either mode.
    
    * src/psaux/psobjs.c (t1_make_subfont): New procedure to copy required 
values
    to a dummy CFF_SubFont object. This is similar to cff_make_private_dict.
    
    * src/psaux/psobjs.h: Add the new declaration.
    * include/freetype/internal/psaux.h, src/psaux/psauxmod.c: Ditto.
    Add this to the PSAux Service for future use with CID fonts.
    
    * src/type1/t1gload.c: Add the call.
---
 include/freetype/internal/psaux.h |  4 ++
 src/psaux/psauxmod.c              |  1 +
 src/psaux/psobjs.c                | 85 +++++++++++++++++++++++++++++++++++++++
 src/psaux/psobjs.h                |  4 ++
 src/type1/t1gload.c               |  7 ++++
 5 files changed, 101 insertions(+)

diff --git a/include/freetype/internal/psaux.h 
b/include/freetype/internal/psaux.h
index dbbdb2d..fc766d3 100644
--- a/include/freetype/internal/psaux.h
+++ b/include/freetype/internal/psaux.h
@@ -1290,6 +1290,10 @@ FT_BEGIN_HEADER
                         FT_Bool      is_t1,
                         PS_Decoder*  ps_decoder );
 
+    void
+    (*t1_make_subfont)( T1_Face      face,
+                        CFF_SubFont  subfont );
+
 
     T1_CMap_Classes  t1_cmap_classes;
 
diff --git a/src/psaux/psauxmod.c b/src/psaux/psauxmod.c
index 9c07309..b071929 100644
--- a/src/psaux/psauxmod.c
+++ b/src/psaux/psauxmod.c
@@ -154,6 +154,7 @@
     t1_decrypt,
     cff_random,
     ps_decoder_init,
+    t1_make_subfont,
 
     (const T1_CMap_ClassesRec*) &t1_cmap_classes,
 
diff --git a/src/psaux/psobjs.c b/src/psaux/psobjs.c
index 8d0f0fe..3fd2fda 100644
--- a/src/psaux/psobjs.c
+++ b/src/psaux/psobjs.c
@@ -2327,6 +2327,91 @@
   /*************************************************************************/
   /*************************************************************************/
 
+
+  FT_LOCAL_DEF( void )
+  t1_make_subfont( T1_Face      face,
+                   CFF_SubFont  subfont )
+  {
+    PS_Private   priv  = &face->type1.private_dict;
+    CFF_Private  cpriv = &subfont->private_dict;
+    FT_UInt      n, count;
+
+    FT_ZERO( subfont );
+    FT_ZERO( cpriv );
+
+    count = cpriv->num_blue_values = priv->num_blue_values;
+    for ( n = 0; n < count; n++ )
+      cpriv->blue_values[n] = (FT_Pos)priv->blue_values[n];
+
+    count = cpriv->num_other_blues = priv->num_other_blues;
+    for ( n = 0; n < count; n++ )
+      cpriv->other_blues[n] = (FT_Pos)priv->other_blues[n];
+
+    count = cpriv->num_family_blues = priv->num_family_blues;
+    for ( n = 0; n < count; n++ )
+      cpriv->family_blues[n] = (FT_Pos)priv->family_blues[n];
+
+    count = cpriv->num_family_other_blues = priv->num_family_other_blues;
+    for ( n = 0; n < count; n++ )
+      cpriv->family_other_blues[n] = (FT_Pos)priv->family_other_blues[n];
+
+    cpriv->blue_scale = priv->blue_scale;
+    cpriv->blue_shift = (FT_Pos)priv->blue_shift;
+    cpriv->blue_fuzz  = (FT_Pos)priv->blue_fuzz;
+
+    cpriv->standard_width     = (FT_Pos)priv->standard_width[0];
+    cpriv->standard_height    = (FT_Pos)priv->standard_height[0];
+
+    count = cpriv->num_snap_widths = priv->num_snap_widths;
+    for ( n = 0; n < count; n++ )
+      cpriv->snap_widths[n] = (FT_Pos)priv->snap_widths[n];
+
+    count = cpriv->num_snap_heights = priv->num_snap_heights;
+    for ( n = 0; n < count; n++ )
+      cpriv->snap_heights[n] = (FT_Pos)priv->snap_heights[n];
+
+    cpriv->force_bold       = priv->force_bold;
+    cpriv->lenIV            = priv->lenIV;
+    cpriv->language_group   = priv->language_group;
+    cpriv->expansion_factor = priv->expansion_factor;
+
+    cpriv->subfont          = subfont;
+
+
+    /* Initialize the random number generator. */
+    if ( face->root.internal->random_seed != -1 )
+    {
+      /* . If we have a face-specific seed, use it.    */
+      /*   If non-zero, update it to a positive value. */
+      subfont->random = (FT_UInt32)face->root.internal->random_seed;
+      if ( face->root.internal->random_seed )
+      {
+        do
+        {
+          face->root.internal->random_seed =
+            (FT_Int32)((PSAux_Service)face->psaux)->cff_random(
+              (FT_UInt32)face->root.internal->random_seed );
+
+        } while ( face->root.internal->random_seed < 0 );
+      }
+    }
+    if ( !subfont->random )
+    {
+      FT_UInt32  seed;
+
+      /* compute random seed from some memory addresses */
+      seed = (FT_UInt32)( (FT_Offset)(char*)&seed    ^
+                          (FT_Offset)(char*)&face    ^
+                          (FT_Offset)(char*)&subfont );
+      seed = seed ^ ( seed >> 10 ) ^ ( seed >> 20 );
+      if ( seed == 0 )
+        seed = 0x7384;
+
+      subfont->random = seed;
+    }
+  }
+
+
   FT_LOCAL_DEF( void )
   t1_decrypt( FT_Byte*   buffer,
               FT_Offset  length,
diff --git a/src/psaux/psobjs.h b/src/psaux/psobjs.h
index 1f68419..2fed988 100644
--- a/src/psaux/psobjs.h
+++ b/src/psaux/psobjs.h
@@ -285,6 +285,10 @@ FT_BEGIN_HEADER
   /*************************************************************************/
 
   FT_LOCAL( void )
+  t1_make_subfont( T1_Face      face,
+                   CFF_SubFont  subfont );
+
+  FT_LOCAL( void )
   t1_decrypt( FT_Byte*   buffer,
               FT_Offset  length,
               FT_UShort  seed );
diff --git a/src/type1/t1gload.c b/src/type1/t1gload.c
index 22b14e4..56689de 100644
--- a/src/type1/t1gload.c
+++ b/src/type1/t1gload.c
@@ -23,6 +23,7 @@
 #include FT_INTERNAL_STREAM_H
 #include FT_OUTLINE_H
 #include FT_INTERNAL_POSTSCRIPT_AUX_H
+#include FT_INTERNAL_CFF_TYPES_H
 #include FT_TYPE1_DRIVER_H
 
 #include "t1errors.h"
@@ -104,8 +105,14 @@
                                                       
(FT_UInt)char_string->length );
       else
       {
+        CFF_SubFontRec  subfont;
+
+
         psaux->ps_decoder_init( decoder, TRUE, &psdecoder );
 
+        psaux->t1_make_subfont( face, &subfont );
+        psdecoder.current_subfont = &subfont;
+
         error = decoder_funcs->parse_charstrings( &psdecoder,
                                                   
(FT_Byte*)char_string->pointer,
                                                   
(FT_ULong)char_string->length );