Add chromacheck Emoji test fonts and minor preparations (#1294)

src/hb-ot-color.cc

@@ -26,8 +26,11 @@
  */
 
 #include "hb-open-type.hh"
+#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"
 
@@ -51,6 +54,29 @@ _get_cpal (hb_face_t *face)
   return *(hb_ot_face_data (face)->CPAL.get ());
 }
 
+#if 0
+static inline const OT::CBDT_accelerator_t&
+_get_cbdt (hb_face_t *face)
+{
+  if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::CBDT_accelerator_t);
+  return *(hb_ot_face_data (face)->CBDT.get ());
+}
+
+static inline const OT::sbix&
+_get_sbix (hb_face_t *face)
+{
+  if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::sbix);
+  return *(hb_ot_face_data (face)->sbix.get ());
+}
+
+static inline const OT::SVG&
+_get_svg (hb_face_t *face)
+{
+  if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::SVG);
+  return *(hb_ot_face_data (face)->SVG.get ());
+}
+#endif
+
 /**
  * hb_ot_color_has_cpal_data:
  * @face: a font face.

src/hb-ot-face.hh

@@ -47,9 +47,6 @@
     /* OpenType shaping. */ \
     HB_OT_TABLE(OT, JSTF) \
     HB_OT_TABLE(OT, BASE) \
-    /* OpenType color */ \
-    HB_OT_TABLE(OT, COLR) \
-    HB_OT_TABLE(OT, CPAL) \
     /* AAT shaping. */ \
     HB_OT_TABLE(AAT, morx) \
     HB_OT_TABLE(AAT, kerx) \
@@ -71,7 +68,12 @@
     HB_OT_ACCELERATOR(OT, post) \
     HB_OT_ACCELERATOR(OT, kern) \
     HB_OT_ACCELERATOR(OT, glyf) \
+    /* OpenType color fonts. */ \
+    HB_OT_TABLE(OT, COLR) \
+    HB_OT_TABLE(OT, CPAL) \
     HB_OT_ACCELERATOR(OT, CBDT) \
+    HB_OT_TABLE(OT, sbix) \
+    HB_OT_TABLE(OT, SVG) \
     /* */
 
 /* Declare tables. */

test/api/fonts/README

@@ -1,3 +1,5 @@
 cmap-format12-only files created by ttx & remove all other cmap entries
 
 Inconsolata-Regular.abc.widerc.ttf has the hmtx width of "c" set to 600; everything else is 500. Subsetting out c should reduce numberOfHMetrics to 1.
+
+chromacheck-* fonts are from https://github.com/RoelN/ChromaCheck/tree/master/fonts and licensed under MIT by Roel Nieskens and Google.

test/api/hb-test.h

@@ -288,7 +288,7 @@ hb_test_open_font_file (const char *font_path)
 
   hb_blob_t *blob = hb_blob_create_from_file (path);
   if (hb_blob_get_length (blob) == 0)
-    g_error ("Font not found.");
+    g_error ("Font %s not found.", path);
 
   hb_face_t *face = hb_face_create (blob, 0);
   hb_blob_destroy (blob);

test/api/test-ot-color.c

@@ -99,6 +99,11 @@ static hb_face_t *cpal_v0 = NULL;
 */
 static hb_face_t *cpal_v1 = NULL;
 
+static hb_face_t *cpal = NULL;
+static hb_face_t *cbdt = NULL;
+static hb_face_t *sbix = NULL;
+static hb_face_t *svg = NULL;
+
 #define assert_color_rgba(colors, i, r, g, b, a) G_STMT_START {	\
   const hb_color_t *_colors = (colors); \
   const size_t _i = (i); \
@@ -352,10 +357,18 @@ test_hb_ot_color_has_data (void)
   g_assert (hb_ot_color_has_colr_data (empty) == FALSE);
   g_assert (hb_ot_color_has_colr_data (cpal_v0) == TRUE);
   g_assert (hb_ot_color_has_colr_data (cpal_v1) == TRUE);
+  g_assert (hb_ot_color_has_colr_data (cpal) == TRUE);
+  g_assert (hb_ot_color_has_colr_data (cbdt) == FALSE);
+  g_assert (hb_ot_color_has_colr_data (sbix) == FALSE);
+  g_assert (hb_ot_color_has_colr_data (svg) == FALSE);
 
   g_assert (hb_ot_color_has_cpal_data (empty) == FALSE);
   g_assert (hb_ot_color_has_cpal_data (cpal_v0) == TRUE);
   g_assert (hb_ot_color_has_cpal_data (cpal_v1) == TRUE);
+  g_assert (hb_ot_color_has_cpal_data (cpal) == TRUE);
+  g_assert (hb_ot_color_has_cpal_data (cbdt) == FALSE);
+  g_assert (hb_ot_color_has_cpal_data (sbix) == FALSE);
+  g_assert (hb_ot_color_has_cpal_data (svg) == FALSE);
 }
 
 int
@@ -366,6 +379,10 @@ main (int argc, char **argv)
   hb_test_init (&argc, &argv);
   cpal_v0 = hb_test_open_font_file ("fonts/cpal-v0.ttf");
   cpal_v1 = hb_test_open_font_file ("fonts/cpal-v1.ttf");
+  cpal = hb_test_open_font_file ("fonts/chromacheck-colr.ttf");
+  cbdt = hb_test_open_font_file ("fonts/chromacheck-cbdt.ttf");
+  sbix = hb_test_open_font_file ("fonts/chromacheck-sbix.ttf");
+  svg = hb_test_open_font_file ("fonts/chromacheck-svg.ttf");
   hb_test_add (test_hb_ot_color_get_palette_count);
   hb_test_add (test_hb_ot_color_get_palette_name_id_empty);
   hb_test_add (test_hb_ot_color_get_palette_name_id_v0);
@@ -382,5 +399,9 @@ main (int argc, char **argv)
   status = hb_test_run();
   hb_face_destroy (cpal_v0);
   hb_face_destroy (cpal_v1);
+  hb_face_destroy (cpal);
+  hb_face_destroy (cbdt);
+  hb_face_destroy (sbix);
+  hb_face_destroy (svg);
   return status;
 }