From df89b52130ce85ed481f8672f051744b947df6a5 Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Fri, 16 Dec 2022 23:46:05 -0500
Subject: [PATCH] cff1: Implement paint_glyph

---
 src/hb-ot-cff1-table.cc | 21 +++++++++++++++++++++
 src/hb-ot-cff1-table.hh |  2 ++
 2 files changed, 23 insertions(+)

diff --git a/src/hb-ot-cff1-table.cc b/src/hb-ot-cff1-table.cc
index c2fb26547..65bf6d739 100644
--- a/src/hb-ot-cff1-table.cc
+++ b/src/hb-ot-cff1-table.cc
@@ -553,6 +553,27 @@ bool _get_path (const OT::cff1::accelerator_t *cff, hb_font_t *font, hb_codepoin
   return true;
 }
 
+bool OT::cff1::accelerator_t::paint_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_paint_funcs_t *funcs, void *data) const
+{
+    int xscale, yscale;
+    unsigned int upem;
+
+    hb_font_get_scale (font, &xscale, &yscale);
+    upem = hb_face_get_upem (hb_font_get_face (font));
+
+    funcs->push_transform (data, xscale/(float)upem, 0,
+                                 0, yscale/(float)upem,
+                                 0, 0);
+
+    funcs->push_clip_glyph (data, glyph);
+    funcs->color (data, 0xffff, 1.);
+    funcs->pop_clip (data);
+
+    funcs->pop_transform (data);
+
+    return false;
+}
+
 bool OT::cff1::accelerator_t::get_path (hb_font_t *font, hb_codepoint_t glyph, hb_draw_session_t &draw_session) const
 {
 #ifdef HB_NO_OT_FONT_CFF
diff --git a/src/hb-ot-cff1-table.hh b/src/hb-ot-cff1-table.hh
index bb856c9dd..3bc37d9bb 100644
--- a/src/hb-ot-cff1-table.hh
+++ b/src/hb-ot-cff1-table.hh
@@ -30,6 +30,7 @@
 #include "hb-ot-cff-common.hh"
 #include "hb-subset-cff1.hh"
 #include "hb-draw.hh"
+#include "hb-paint.hh"
 
 #define HB_STRING_ARRAY_NAME cff1_std_strings
 #define HB_STRING_ARRAY_LIST "hb-ot-cff1-std-str.hh"
@@ -1426,6 +1427,7 @@ struct cff1
     }
 
     HB_INTERNAL bool get_extents (hb_font_t *font, hb_codepoint_t glyph, hb_glyph_extents_t *extents) const;
+    HB_INTERNAL bool paint_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_paint_funcs_t *funcs, void *data) const;
     HB_INTERNAL bool get_seac_components (hb_codepoint_t glyph, hb_codepoint_t *base, hb_codepoint_t *accent) const;
     HB_INTERNAL bool get_path (hb_font_t *font, hb_codepoint_t glyph, hb_draw_session_t &draw_session) const;