[config] Don't compile color API if HB_NO_COLOR

Part of https://github.com/harfbuzz/harfbuzz/issues/1652

src/hb-ot-color.cc

@@ -25,20 +25,21 @@
  * Google Author(s): Sascha Brawer, Behdad Esfahbod
  */
 
-#include "hb-open-type.hh"
+#include "hb.hh"
+
+#ifndef HB_NO_COLOR
+
+#include "hb-ot.h"
+
 #include "hb-ot-color-cbdt-table.hh"
 #include "hb-ot-color-colr-table.hh"
 #include "hb-ot-color-cpal-table.hh"
 #include "hb-ot-color-sbix-table.hh"
 #include "hb-ot-color-svg-table.hh"
-#include "hb-ot-face.hh"
-#include "hb-ot.h"
 
 #include <stdlib.h>
 #include <string.h>
 
-#include "hb-ot-layout.hh"
-
 
 /**
  * SECTION:hb-ot-color
@@ -70,9 +71,6 @@
 hb_bool_t
 hb_ot_color_has_palettes (hb_face_t *face)
 {
-#ifdef HB_NO_COLOR
-  return false;
-#endif
   return face->table.CPAL->has_data ();
 }
 
@@ -89,9 +87,6 @@ hb_ot_color_has_palettes (hb_face_t *face)
 unsigned int
 hb_ot_color_palette_get_count (hb_face_t *face)
 {
-#ifdef HB_NO_COLOR
-  return 0;
-#endif
   return face->table.CPAL->get_palette_count ();
 }
 
@@ -115,9 +110,6 @@ hb_ot_name_id_t
 hb_ot_color_palette_get_name_id (hb_face_t *face,
 				 unsigned int palette_index)
 {
-#ifdef HB_NO_COLOR
-  return HB_OT_NAME_ID_INVALID;
-#endif
   return face->table.CPAL->get_palette_name_id (palette_index);
 }
 
@@ -140,9 +132,6 @@ hb_ot_name_id_t
 hb_ot_color_palette_color_get_name_id (hb_face_t *face,
 				       unsigned int color_index)
 {
-#ifdef HB_NO_COLOR
-  return HB_OT_NAME_ID_INVALID;
-#endif
   return face->table.CPAL->get_color_name_id (color_index);
 }
 
@@ -161,9 +150,6 @@ hb_ot_color_palette_flags_t
 hb_ot_color_palette_get_flags (hb_face_t *face,
 			       unsigned int palette_index)
 {
-#ifdef HB_NO_COLOR
-  return HB_OT_COLOR_PALETTE_FLAG_DEFAULT;
-#endif
   return face->table.CPAL->get_palette_flags (palette_index);
 }
 
@@ -195,11 +181,6 @@ hb_ot_color_palette_get_colors (hb_face_t     *face,
 				unsigned int  *colors_count  /* IN/OUT.  May be NULL. */,
 				hb_color_t    *colors        /* OUT.     May be NULL. */)
 {
-#ifdef HB_NO_COLOR
-  if (colors_count)
-    *colors_count = 0;
-  return 0;
-#endif
   return face->table.CPAL->get_palette_colors (palette_index, start_offset, colors_count, colors);
 }
 
@@ -221,9 +202,6 @@ hb_ot_color_palette_get_colors (hb_face_t     *face,
 hb_bool_t
 hb_ot_color_has_layers (hb_face_t *face)
 {
-#ifdef HB_NO_COLOR
-  return false;
-#endif
   return face->table.COLR->has_data ();
 }
 
@@ -250,11 +228,6 @@ hb_ot_color_glyph_get_layers (hb_face_t           *face,
 			      unsigned int        *layer_count, /* IN/OUT.  May be NULL. */
 			      hb_ot_color_layer_t *layers /* OUT.     May be NULL. */)
 {
-#ifdef HB_NO_COLOR
-  if (layer_count)
-    *layer_count = 0;
-  return 0;
-#endif
   return face->table.COLR->get_glyph_layers (glyph, start_offset, layer_count, layers);
 }
 
@@ -276,9 +249,6 @@ hb_ot_color_glyph_get_layers (hb_face_t           *face,
 hb_bool_t
 hb_ot_color_has_svg (hb_face_t *face)
 {
-#ifdef HB_NO_COLOR
-  return false;
-#endif
   return face->table.SVG->has_data ();
 }
 
@@ -296,9 +266,6 @@ hb_ot_color_has_svg (hb_face_t *face)
 hb_blob_t *
 hb_ot_color_glyph_reference_svg (hb_face_t *face, hb_codepoint_t glyph)
 {
-#ifdef HB_NO_COLOR
-  return hb_blob_get_empty ();
-#endif
   return face->table.SVG->reference_blob_for_glyph (glyph);
 }
 
@@ -320,9 +287,6 @@ hb_ot_color_glyph_reference_svg (hb_face_t *face, hb_codepoint_t glyph)
 hb_bool_t
 hb_ot_color_has_png (hb_face_t *face)
 {
-#ifdef HB_NO_COLOR
-  return false;
-#endif
   return face->table.CBDT->has_data () || face->table.sbix->has_data ();
 }
 
@@ -342,10 +306,6 @@ hb_ot_color_has_png (hb_face_t *face)
 hb_blob_t *
 hb_ot_color_glyph_reference_png (hb_font_t *font, hb_codepoint_t  glyph)
 {
-#ifdef HB_NO_COLOR
-  return hb_blob_get_empty ();
-#endif
-
   hb_blob_t *blob = hb_blob_get_empty ();
 
   if (font->face->table.sbix->has_data ())
@@ -356,3 +316,6 @@ hb_ot_color_glyph_reference_png (hb_font_t *font, hb_codepoint_t  glyph)
 
   return blob;
 }
+
+
+#endif

src/test-ot-color.cc

@@ -23,7 +23,10 @@
  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  */
 
-#include "hb.h"
+#include "hb.hh"
+
+#ifndef HB_NO_COLOR
+
 #include "hb-ot.h"
 
 #include "hb-ft.h"
@@ -334,3 +337,7 @@ main (int argc, char **argv)
 
   return 0;
 }
+
+#else
+int main (int argc, char **argv) { return 0; }
+#endif