From f59d74e2f786e5429ef3a1305f4259b19b17f117 Mon Sep 17 00:00:00 2001
From: handa <handa>
Date: Tue, 2 Nov 2004 06:15:26 +0000
Subject: [PATCH] (MAX_FEATURE_COUNT): Delete this macro. (FeatureElement):
 New type. (FeatureRec): New element num_features and
 parent. (update_seq_area): Show alternate glyphs if any.
 (setup_feature_rec): (Re)allocate rec->features.  Create
 widgets. (create_otf_widgets): Don't create widgets here.

---
 example/otfview.c |   79 ++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 63 insertions(+), 16 deletions(-)

diff --git a/example/otfview.c b/example/otfview.c
index 531f549..0accf52 100644
--- a/example/otfview.c
+++ b/example/otfview.c
@@ -90,18 +90,21 @@ Widget render_area, clear, del, bidi, raw, seq;
 Widget raw_label, raw_image, seq_label, seq_image;
 unsigned long foreground, background;
 
-#define MAX_FEATURE_COUNT 16
+typedef struct
+{
+  OTF_Tag tag;
+  int on;
+  Widget w;
+} FeatureElement;
 
 typedef struct
 {
   char *label;
   OTF_GSUB_GPOS *gsub_gpos;
   OTF_LangSys *langsys;
-  struct {
-    OTF_Tag tag;
-    int on;
-    Widget w;
-  } features[MAX_FEATURE_COUNT];
+  int num_features;
+  FeatureElement *features;
+  Widget parent;
 } FeatureRec;
 
 FeatureRec gsub, gpos;
@@ -360,6 +363,7 @@ update_seq_area ()
       int xoff = 0, yoff = 0;
       int prev_width;
       int advance = bmp->advance;
+      int j;
 
       if (! bmp->pixmap)
 	{
@@ -434,6 +438,21 @@ update_seq_area ()
 	mark = g;
       else
 	base = g, base_width = advance;
+
+      if (g->alternate_set)
+	for (j = 0; j < g->alternate_set->GlyphCount; j++)
+	  {
+	    bmp = bitmap + g->alternate_set->Alternate[j];
+	    if (! bmp->pixmap)
+	      create_pixmap (g->alternate_set->Alternate[j]);
+	    if (! bmp->pixmap)
+	      continue;
+	    XCopyArea (display, bmp->pixmap, seq_pixmap, gc_or,
+		       glyph_x + bmp->x, glyph_y + bmp->y, 
+		       bmp->width, bmp->height,
+		       x + bmp->x + xoff, glyph_y + bmp->y - yoff);
+	    x += bmp->advance;
+	}
     }
   free (gstring.glyphs);
 
@@ -786,6 +805,23 @@ setup_feature_rec (FeatureRec *rec)
 	break;
       }
 
+  if (! rec->features)
+    {
+      rec->num_features = rec->langsys->FeatureCount;
+      rec->features = malloc ((sizeof (FeatureElement)) * rec->num_features);
+      memset (rec->features, 0, (sizeof (FeatureElement)) * rec->num_features);
+    }
+  else if (rec->num_features < rec->langsys->FeatureCount)
+    {
+      rec->features = realloc (rec->features, 
+			       (sizeof (FeatureElement))
+			       * rec->langsys->FeatureCount);
+      memset (rec->features + rec->num_features, 0,
+	      (sizeof (FeatureElement)) 
+	      * (rec->langsys->FeatureCount - rec->num_features));
+      rec->num_features = rec->langsys->FeatureCount;
+    }
+
   if (! rec->langsys)
     i = 0;
   else
@@ -795,12 +831,20 @@ setup_feature_rec (FeatureRec *rec)
       XtSetArg (arg[2], XtNinternalWidth, 4);
       XtSetArg (arg[3], XtNborderColor, foreground);
       XtSetArg (arg[4], XtNsensitive, True);
-      for (i = 0; i < rec->langsys->FeatureCount && i < MAX_FEATURE_COUNT; i++)
+      for (i = 0; i < rec->langsys->FeatureCount; i++)
 	{
 	  OTF_Feature *feature = rec->gsub_gpos->FeatureList.Feature;
 	  int index = rec->langsys->FeatureIndex[i];
 	  char label[5];
 
+	  if (! rec->features[i].w)
+	    {
+	      Widget w = XtCreateManagedWidget ("", commandWidgetClass,
+						rec->parent, arg, 0);
+	      XtAddCallback (w, XtNcallback, FeatureProc, (XtPointer) rec);
+	      rec->features[i].w = w;
+	    }
+
 	  rec->features[i].tag = feature[index].FeatureTag;
 	  rec->features[i].on = 0;
 	  OTF_tag_name (rec->features[i].tag, label);
@@ -811,8 +855,17 @@ setup_feature_rec (FeatureRec *rec)
   XtSetArg (arg[0], XtNborderColor, background);
   XtSetArg (arg[1], XtNsensitive, False);
   XtSetArg (arg[2], XtNlabel, "    ");
-  for (; i < MAX_FEATURE_COUNT; i++)
-    XtSetValues (rec->features[i].w, arg, 3);
+  for (; i < rec->langsys->FeatureCount; i++)
+    {
+      if (! rec->features[i].w)
+	{
+	  Widget w = XtCreateManagedWidget ("", commandWidgetClass,
+					    rec->parent, arg, 0);
+	  XtAddCallback (w, XtNcallback, FeatureProc, (XtPointer) rec);
+	  rec->features[i].w = w;
+	}
+      XtSetValues (rec->features[i].w, arg, 3);
+    }
 }
 
 void
@@ -924,13 +977,7 @@ create_otf_widgets (Widget prev, FeatureRec *rec)
   w = XtCreateManagedWidget ("none", commandWidgetClass, prev, arg, 3);
   XtAddCallback (w, XtNcallback, FeatureProc, (XtPointer) rec);
 
-  for (i = 0; i < MAX_FEATURE_COUNT; i++)
-    {
-      w = XtCreateManagedWidget ("", commandWidgetClass, prev, arg, 0);
-      XtAddCallback (w, XtNcallback, FeatureProc, (XtPointer) rec);
-      rec->features[i].w = w;
-    }
-
+  rec->parent = prev;
   setup_feature_rec (rec);
   return prev;
 }
-- 
1.7.10.4