(main): If ! otf, don't setup sub14.
[m17n/libotf.git] / example / otfview.c
index 1dcc1df..919c8f3 100644 (file)
@@ -1,6 +1,6 @@
 /* otfview.c -- View glyphs of OpenType fonts.
 
-Copyright (C) 2003, 2004, 2005
+Copyright (C) 2003, 2004, 2005, 2006, 2008
   National Institute of Advanced Industrial Science and Technology (AIST)
   Registration Number H15PRO167
 
@@ -72,6 +72,9 @@ XtAppContext context;
    | | idxh[7] glyph[112]  ...    glyph[127]| |
    | |         idxl[0]     ...    idxl[15]  | |
    | +--------------------------------------+ |
+   | +---- uvs_area (box) (optional) -------+ |
+   | | uvs[?].w ...                         | |
+   | +--------------------------------------+ |
    | +--- render_area (form) ---------------+ |
    | | clear del bidi alt_subst             | |
    | | +--- raw (box) --------------------+ | |
@@ -88,6 +91,7 @@ Widget shell, frame;
 Widget command_area, quit, dump, *charmap;
 Widget navi_area, FIRST, PREV, prev, range, next, NEXT, LAST;
 Widget glyph_area, glyph[128], index_label[8];
+Widget uvs_area, uvs_label;
 Widget render_area, clear, del, bidi, alt_subst, raw, seq;
 Widget raw_label, raw_image, seq_label, seq_image;
 unsigned long foreground, background;
@@ -154,6 +158,13 @@ struct {
   int codes[64];
 } glyph_rec;
 
+OTF_EncodingSubtable14 *sub14 = NULL;
+
+struct {
+  Widget w;
+  int c;
+} uvs[256];
+
 OTF *otf;
 char *filename;
 int fontindex;
@@ -242,6 +253,27 @@ update_glyph_area ()
   XtSetValues (range, arg, 1);
 }
 
+void
+update_uvs_area (int c)
+{
+  OTF_GlyphID code[256];
+  Arg arg[1];
+  int i;
+
+  OTF_get_variation_glyphs (otf, c, code);
+
+  for (i = 0; i < 256; i++)
+    if (uvs[i].w)
+      {
+       if (code[i])
+         XtSetArg (arg[0], XtNsensitive, True);
+       else
+         XtSetArg (arg[0], XtNsensitive, False);
+       XtSetValues (uvs[i].w, arg, 1);
+      }
+}
+
+
 char *
 get_features (OTF_FeatureList *list, FeatureRec *rec)
 {
@@ -268,9 +300,10 @@ get_features (OTF_FeatureList *list, FeatureRec *rec)
 }
 
 
-#define DEVICE_DELTA(table, size)                              \
-  (((size) >= (table).StartSize && (size) <= (table).EndSize)  \
-   ? (table).DeltaValue[(size) >= (table).StartSize]           \
+#define DEVICE_DELTA(table, size)                                      \
+  (((table).DeltaValue                                                 \
+    && ((size) >= (table).StartSize && (size) <= (table).EndSize))     \
+   ? (table).DeltaValue[(size) >= (table).StartSize]                   \
    : 0)
 
 void
@@ -312,7 +345,11 @@ update_seq_area ()
   gstring.glyphs = malloc (sizeof (OTF_Glyph) * len);
   memset (gstring.glyphs, 0, sizeof (OTF_Glyph) * len);
   for (i = 0; i < len; i++)
-    gstring.glyphs[i].c = gstring.glyphs[i].glyph_id = glyph_rec.glyphs[i];
+    {
+      gstring.glyphs[i].c = glyph_rec.codes[i];
+      if (charmap_index < 0)
+       gstring.glyphs[i].glyph_id = glyph_rec.glyphs[i];
+    }
 
   XFillRectangle (display, seq_pixmap, gc, 0, 0, render_width, render_height);
   XDrawLine (display, seq_pixmap, gc_set, 0, glyph_y, render_width, glyph_y);
@@ -321,6 +358,7 @@ update_seq_area ()
       char *str;
 
       OTF_drive_gdef (otf, &gstring);
+      OTF_drive_cmap (otf, &gstring);
       if (otf->gsub)
        {
          str = get_features (&otf->gsub->FeatureList, &gsub);
@@ -338,7 +376,7 @@ update_seq_area ()
          str = get_features (&otf->gpos->FeatureList, &gpos);
          if (str)
            {
-             OTF_drive_gpos (otf, &gstring, NULL, NULL, str);
+             OTF_drive_gpos2 (otf, &gstring, NULL, NULL, str);
              free (str);
            }
        }
@@ -374,69 +412,78 @@ update_seq_area ()
       int prev_width;
       int advance = bmp->advance;
 
-      if (! bmp->pixmap)
+      if (gstring.glyphs[i].glyph_id && ! bmp->pixmap)
        {
          create_pixmap (gstring.glyphs[i].glyph_id);
          if (! bmp->pixmap)
            continue;
          advance = bmp->advance;
        }
-      switch (g->positioning_type)
+      if (g->positioning_type)
        {
-       case 0:
-         break;
-
-       case 1: case 2:
-         {
-           int format = g->f.f1.format;
-
-           if (format & OTF_XPlacement)
-             xoff = g->f.f1.value->XPlacement * pixel_size / unitsPerEm;
-           if (format & OTF_XPlaDevice)
-             xoff += DEVICE_DELTA (g->f.f1.value->XPlaDevice, pixel_size);
-           if (format & OTF_YPlacement)
-             yoff = g->f.f1.value->YPlacement * pixel_size / unitsPerEm;
-           if (format & OTF_YPlaDevice)
-             yoff += DEVICE_DELTA (g->f.f1.value->YPlaDevice, pixel_size);
-           if (format & OTF_XAdvance)
-             advance += g->f.f1.value->XAdvance * pixel_size / unitsPerEm;
-           if (format & OTF_XAdvDevice)
-             advance += DEVICE_DELTA (g->f.f1.value->XAdvDevice, pixel_size);
-         }
-         break;
+         while (1)
+           {
+             switch (g->positioning_type)
+               {
+               case 1: case 2:
+                 {
+                   int format = g->f.f1.format;
+
+                   if (format & OTF_XPlacement)
+                     xoff = g->f.f1.value->XPlacement * pixel_size / unitsPerEm;
+                   if (format & OTF_XPlaDevice)
+                     xoff += DEVICE_DELTA (g->f.f1.value->XPlaDevice, pixel_size);
+                   if (format & OTF_YPlacement)
+                     yoff = g->f.f1.value->YPlacement * pixel_size / unitsPerEm;
+                   if (format & OTF_YPlaDevice)
+                     yoff += DEVICE_DELTA (g->f.f1.value->YPlaDevice, pixel_size);
+                   if (format & OTF_XAdvance)
+                     advance += g->f.f1.value->XAdvance * pixel_size / unitsPerEm;
+                   if (format & OTF_XAdvDevice)
+                     advance += DEVICE_DELTA (g->f.f1.value->XAdvDevice,
+                                              pixel_size);
+                 }
+                 break;
 
-       case 3:
-         /* Not yet supported.  */
-         break;
-       case 4: case 5:
-         if (! base)
-           break;
-         prev = base;
-         prev_width = base_width;
-         goto label_adjust_anchor;
-       default:                /* i.e. case 6 */
-         if (! mark)
-           break;
-         prev = mark;
-         prev_width = 0;
-       label_adjust_anchor:
-         {
-           int base_x, base_y, mark_x, mark_y;
-
-           base_x = g->f.f4.base_anchor->XCoordinate * pixel_size / unitsPerEm;
-           base_y = g->f.f4.base_anchor->YCoordinate * pixel_size / unitsPerEm;
-           mark_x = g->f.f4.mark_anchor->XCoordinate * pixel_size / unitsPerEm;
-           mark_y = g->f.f4.mark_anchor->YCoordinate * pixel_size / unitsPerEm;
-
-           if (g->f.f4.base_anchor->AnchorFormat != 1)
-             adjust_anchor (g->f.f4.base_anchor, face, prev, &base_x, &base_y);
-           if (g->f.f4.mark_anchor->AnchorFormat != 1)
-             adjust_anchor (g->f.f4.mark_anchor, face, g, &mark_x, &mark_y);
-           xoff = (base_x - prev_width) - mark_x;
-           yoff = base_y - mark_y;
-         }
+               case 3:
+                 /* Not yet supported.  */
+                 break;
+               case 4: case 5:
+                 if (! base)
+                   break;
+                 prev = base;
+                 prev_width = base_width;
+                 goto label_adjust_anchor;
+               default:                /* i.e. case 6 */
+                 if (! mark)
+                   break;
+                 prev = mark;
+                 prev_width = 0;
+               label_adjust_anchor:
+                 {
+                   int base_x, base_y, mark_x, mark_y;
+
+                   base_x = g->f.f4.base_anchor->XCoordinate * pixel_size / unitsPerEm;
+                   base_y = g->f.f4.base_anchor->YCoordinate * pixel_size / unitsPerEm;
+                   mark_x = g->f.f4.mark_anchor->XCoordinate * pixel_size / unitsPerEm;
+                   mark_y = g->f.f4.mark_anchor->YCoordinate * pixel_size / unitsPerEm;
+
+                   if (g->f.f4.base_anchor->AnchorFormat != 1)
+                     adjust_anchor (g->f.f4.base_anchor, face, prev, &base_x, &base_y);
+                   if (g->f.f4.mark_anchor->AnchorFormat != 1)
+                     adjust_anchor (g->f.f4.mark_anchor, face, g, &mark_x, &mark_y);
+                   xoff = (base_x - prev_width) - mark_x;
+                   yoff = base_y - mark_y;
+                 }
+               }
+             if (i + 1 == gstring.used
+                 || gstring.glyphs[i + 1].glyph_id
+                 || ! gstring.glyphs[i + 1].positioning_type)
+               break;
+             i++, g++;
+           }
        }
-         
+
       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);
@@ -466,28 +513,50 @@ update_render_area ()
   XFillRectangle (display, raw_pixmap, gc, 0, 0, render_width, render_height);
   for (i = 0, x = glyph_x; i < glyph_rec.n_glyphs; i++)
     {
-      BitmapRec *bmp = bitmap + glyph_rec.glyphs[i];
-      char buf[5];
-
-      XCopyArea (display, bmp->pixmap, raw_pixmap, gc,
-                0, 0, glyph_width, glyph_height,
-                (glyph_width + 4) * i + 1, 1);
-      XDrawRectangle (display, raw_pixmap, gc_set,
-                     (glyph_width + 4) * i, 0,
-                     glyph_width + 1, glyph_height + 1);
-      XDrawLine (display, raw_pixmap, gc_set,
-                (glyph_width + 4) * i + 1 + glyph_x, 1,
-                (glyph_width + 4) * i + 1 + glyph_x, glyph_height + 1);
-      XDrawLine (display, raw_pixmap, gc_set,
-                (glyph_width + 4) * i + 1 + glyph_x + bmp->advance, 1,
-                (glyph_width + 4) * i + 1 + glyph_x + bmp->advance,
-                glyph_height + 1);
-
-      sprintf (buf, "%04X", glyph_rec.codes[i]);
-      XDrawString (display, raw_pixmap, gc_inv, 
-                  (glyph_width + 1) * i + 1
-                  + (glyph_width - XTextWidth (font, buf, 4)) / 2,
-                  glyph_height + 2 + FONT_HEIGHT, buf, 4);
+      if (glyph_rec.glyphs[i] >= 0)
+       {
+         BitmapRec *bmp = bitmap + glyph_rec.glyphs[i];
+         char buf[5];
+
+         XCopyArea (display, bmp->pixmap, raw_pixmap, gc,
+                    0, 0, glyph_width, glyph_height,
+                    (glyph_width + 4) * i + 1, 1);
+         XDrawRectangle (display, raw_pixmap, gc_set,
+                         (glyph_width + 4) * i, 0,
+                         glyph_width + 1, glyph_height + 1);
+         XDrawLine (display, raw_pixmap, gc_set,
+                    (glyph_width + 4) * i + 1 + glyph_x, 1,
+                    (glyph_width + 4) * i + 1 + glyph_x, glyph_height + 1);
+         XDrawLine (display, raw_pixmap, gc_set,
+                    (glyph_width + 4) * i + 1 + glyph_x + bmp->advance, 1,
+                    (glyph_width + 4) * i + 1 + glyph_x + bmp->advance,
+                    glyph_height + 1);
+
+         sprintf (buf, "%04X", glyph_rec.codes[i]);
+         XDrawString (display, raw_pixmap, gc_inv, 
+                      (glyph_width + 4) * i + 1
+                      + (glyph_width - XTextWidth (font, buf, 4)) / 2,
+                      glyph_height + 2 + FONT_HEIGHT, buf, 4);
+       }
+      else
+       {
+         /* Variation Selector */
+         int idx = - glyph_rec.glyphs[i];
+         char buf[4];
+
+         sprintf (buf, "%03d", idx);
+         XDrawRectangle (display, raw_pixmap, gc_set,
+                         (glyph_width + 4) * i, 0,
+                         glyph_width + 1, glyph_height + 1);
+         XDrawString (display, raw_pixmap, gc_set,
+                      (glyph_width + 4) * i + 1
+                      + (glyph_width - XTextWidth (font, "VS", 2)) / 2,
+                      1 + glyph_height / 2, "VS", 2);
+         XDrawString (display, raw_pixmap, gc_set,
+                      (glyph_width + 4) * i + 1
+                      + (glyph_width - XTextWidth (font, buf, 3)) / 2,
+                      1 + glyph_height / 2 + FONT_ASCENT, buf, 3);
+       }
     }
   XtSetArg (arg[0], XtNbitmap, raw_pixmap);
   XtSetValues (raw_image, arg, 1);
@@ -668,6 +737,33 @@ CharmapProc (Widget w, XtPointer client_data, XtPointer call_data)
 }
 
 void
+UVSProc (Widget w, XtPointer client_data, XtPointer call_data)
+{
+  unsigned idx = (unsigned) client_data;
+  int selector = uvs[idx].c;
+  OTF_VariationSelectorRecord *record;
+  int i;
+
+  if (glyph_rec.n_glyphs >= 64)
+    return;
+  for (i = 0; i < sub14->nRecords; i++)
+    {
+      record = sub14->Records + i;
+      if (record->varSelector == selector)
+       break;
+    }
+  if (i < sub14->nRecords)
+    {
+      if (glyph_rec.n_glyphs > 0
+         && glyph_rec.glyphs[glyph_rec.n_glyphs - 1] < 0)
+       glyph_rec.n_glyphs--;
+      glyph_rec.codes[glyph_rec.n_glyphs] = selector;
+      glyph_rec.glyphs[glyph_rec.n_glyphs++] = - idx - 1;
+      update_render_area ();
+    }
+}
+
+void
 RenderProc (Widget w, XtPointer client_data, XtPointer call_data)
 {
   if ((int) client_data < 0)
@@ -691,6 +787,8 @@ RenderProc (Widget w, XtPointer client_data, XtPointer call_data)
        {
          glyph_rec.codes[glyph_rec.n_glyphs] = glyph_index + (int) client_data;
          glyph_rec.glyphs[glyph_rec.n_glyphs++] = index;
+         if (otf)
+           update_uvs_area (glyph_index + (int) client_data);
          update_render_area ();
        }
     }
@@ -1131,7 +1229,41 @@ create_widgets ()
   XtSetArg (arg[6], XtNdefaultDistance, 0);
   glyph_area = XtCreateManagedWidget ("glyph-area", formWidgetClass,
                                      frame, arg, 7);
+
   XtSetArg (arg[5], XtNfromVert, glyph_area);
+  if (sub14)
+    {
+      Arg arg2[3];
+
+      XtSetArg (arg[6], XtNorientation, XtorientHorizontal);
+      uvs_area = XtCreateManagedWidget ("uvs-area", boxWidgetClass,
+                                       frame, arg, 7);
+      XtSetArg (arg2[0], XtNborderWidth, 0);
+      XtSetArg (arg2[1], XtNlabel, "Variation Selector: ");
+      uvs_label = XtCreateManagedWidget ("uvs-label", labelWidgetClass,
+                                        uvs_area, arg2, 2);
+      XtSetArg (arg2[0], XtNborderWidth, 1);
+      for (i = 0; i < sub14->nRecords; i++)
+       {
+         OTF_VariationSelectorRecord *record = sub14->Records + i;;
+         unsigned selector = record->varSelector;
+         unsigned idx;
+         char lbl[4];
+         
+         idx = (selector <= 0xFE0F ? selector - 0xFE00
+                : selector - 0xE0100 + 16);
+         if (uvs[idx].c)
+           continue;
+         uvs[idx].c = selector;
+         sprintf (lbl, "%03d", idx + 1);
+         XtSetArg (arg2[1], XtNlabel, lbl);
+         XtSetArg (arg2[2], XtNsensitive, False);
+         uvs[idx].w = XtCreateManagedWidget ("lbl", commandWidgetClass,
+                                                  uvs_area, arg2, 3);
+         XtAddCallback (uvs[idx].w, XtNcallback, UVSProc, (XtPointer) idx);
+       }
+      XtSetArg (arg[5], XtNfromVert, uvs_area);
+    }
   render_area = XtCreateManagedWidget ("render-area", formWidgetClass,
                                       frame, arg, 6);
 
@@ -1432,6 +1564,13 @@ main (int argc, char **argv)
          || (OTF_check_table (otf, "GSUB") < 0
              && OTF_check_table (otf, "GPOS") < 0))
        otf = NULL;
+      else
+       for (i = 0; i < otf->cmap->numTables; i++)
+         if (otf->cmap->EncodingRecord[i].subtable.format == 14)
+           {
+             sub14 = otf->cmap->EncodingRecord[i].subtable.f.f14;
+             break;
+           }
     }
 
   {
@@ -1470,9 +1609,11 @@ main (int argc, char **argv)
     XGCValues values;
 
     gc = XCreateGC (display, none_pixmap, (unsigned long) 0, NULL);
+    XSetFont (display, gc, font->fid);
     values.function = GXset;
     values.line_width = 1;
     gc_set = XCreateGC (display, none_pixmap, valuemask, &values);
+    XSetFont (display, gc_set, font->fid);
     values.function = GXor;
     gc_or = XCreateGC (display, none_pixmap, valuemask, &values);
     values.function = GXcopyInverted;