From 9eee38a55cdcbfd34b530dcc8defff84057a9eb2 Mon Sep 17 00:00:00 2001
From: Ebrahim Byagowi <ebrahim@gnu.org>
Date: Sun, 25 Mar 2018 23:56:02 +0430
Subject: [PATCH] [aat/fmtx] Implement the table parsing (#910)

---
 src/hb-aat-layout-fmtx-table.hh | 67 +++++++++++++++++++++++++++++++++
 src/hb-aat-layout-trak-table.hh |  4 +-
 src/hb-aat-layout.cc            |  1 +
 3 files changed, 70 insertions(+), 2 deletions(-)
 create mode 100644 src/hb-aat-layout-fmtx-table.hh

diff --git a/src/hb-aat-layout-fmtx-table.hh b/src/hb-aat-layout-fmtx-table.hh
new file mode 100644
index 000000000..a1e5cfcd9
--- /dev/null
+++ b/src/hb-aat-layout-fmtx-table.hh
@@ -0,0 +1,67 @@
+/*
+ * Copyright © 2018  Ebrahim Byagowi
+ *
+ *  This is part of HarfBuzz, a text shaping library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ */
+
+#ifndef HB_AAT_LAYOUT_FMTX_TABLE_HH
+#define HB_AAT_LAYOUT_FMTX_TABLE_HH
+
+#include "hb-aat-layout-common-private.hh"
+
+#define HB_AAT_TAG_FMTX HB_TAG('f','m','t','x')
+
+
+namespace AAT {
+
+
+/*
+ * fmtx -- Font Metrics
+ */
+
+struct fmtx
+{
+  static const hb_tag_t tableTag = HB_AAT_TAG_FMTX;
+
+  inline bool sanitize (hb_sanitize_context_t *c) const
+  {
+    TRACE_SANITIZE (this);
+    return_trace (c->check_struct (this));
+  }
+
+  FixedVersion<>version;		/* Version (set to 0x00020000). */
+  HBUINT32	glyphIndex;		/* The glyph whose points represent the metrics. */
+  HBUINT8	horizontalBefore;	/* Point number for the horizontal ascent. */
+  HBUINT8	horizontalAfter;	/* Point number for the horizontal descent. */
+  HBUINT8	horizontalCaretHead;	/* Point number for the horizontal caret head. */
+  HBUINT8	horizontalCaretBase;	/* Point number for the horizontal caret base. */
+  HBUINT8	verticalBefore;		/* Point number for the vertical ascent. */
+  HBUINT8	verticalAfter;		/* Point number for the vertical descent. */
+  HBUINT8	verticalCaretHead;	/* Point number for the vertical caret head. */
+  HBUINT8	verticalCaretBase;	/* Point number for the vertical caret base. */
+  public:
+  DEFINE_SIZE_STATIC (16);
+};
+
+} /* namespace AAT */
+
+
+#endif /* HB_AAT_LAYOUT_FMTX_TABLE_HH */
diff --git a/src/hb-aat-layout-trak-table.hh b/src/hb-aat-layout-trak-table.hh
index ab7437336..878cec640 100644
--- a/src/hb-aat-layout-trak-table.hh
+++ b/src/hb-aat-layout-trak-table.hh
@@ -31,7 +31,7 @@
 #include "hb-aat-layout-common-private.hh"
 #include "hb-open-type-private.hh"
 
-#define HB_AAT_TAG_trak HB_TAG('t','r','a','k')
+#define HB_AAT_TAG_TRAK HB_TAG('t','r','a','k')
 
 
 namespace AAT {
@@ -135,7 +135,7 @@ struct TrackData
 
 struct trak
 {
-  static const hb_tag_t tableTag = HB_AAT_TAG_trak;
+  static const hb_tag_t tableTag = HB_AAT_TAG_TRAK;
 
   inline bool sanitize (hb_sanitize_context_t *c) const
   {
diff --git a/src/hb-aat-layout.cc b/src/hb-aat-layout.cc
index 45268e3e7..a22b270e3 100644
--- a/src/hb-aat-layout.cc
+++ b/src/hb-aat-layout.cc
@@ -31,6 +31,7 @@
 
 #include "hb-aat-layout-private.hh"
 #include "hb-aat-layout-ankr-table.hh"
+#include "hb-aat-layout-fmtx-table.hh" // Just so we compile it; unused otherwise.
 #include "hb-aat-layout-kerx-table.hh"
 #include "hb-aat-layout-morx-table.hh"
 #include "hb-aat-layout-trak-table.hh"