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-rw-r--r--gfx/harfbuzz/src/hb-ot-cff2-table.cc222
1 files changed, 222 insertions, 0 deletions
diff --git a/gfx/harfbuzz/src/hb-ot-cff2-table.cc b/gfx/harfbuzz/src/hb-ot-cff2-table.cc
new file mode 100644
index 0000000000..7955565551
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+++ b/gfx/harfbuzz/src/hb-ot-cff2-table.cc
@@ -0,0 +1,222 @@
+/*
+ * Copyright © 2018 Adobe Inc.
+ *
+ * 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.
+ *
+ * Adobe Author(s): Michiharu Ariza
+ */
+
+#include "hb.hh"
+
+#ifndef HB_NO_OT_FONT_CFF
+
+#include "hb-ot-cff2-table.hh"
+#include "hb-cff2-interp-cs.hh"
+#include "hb-draw.hh"
+
+using namespace CFF;
+
+struct cff2_extents_param_t
+{
+ cff2_extents_param_t ()
+ {
+ min_x.set_int (INT_MAX);
+ min_y.set_int (INT_MAX);
+ max_x.set_int (INT_MIN);
+ max_y.set_int (INT_MIN);
+ }
+
+ void start_path () { path_open = true; }
+ void end_path () { path_open = false; }
+ bool is_path_open () const { return path_open; }
+
+ void update_bounds (const point_t &pt)
+ {
+ if (pt.x < min_x) min_x = pt.x;
+ if (pt.x > max_x) max_x = pt.x;
+ if (pt.y < min_y) min_y = pt.y;
+ if (pt.y > max_y) max_y = pt.y;
+ }
+
+ bool path_open = false;
+ number_t min_x;
+ number_t min_y;
+ number_t max_x;
+ number_t max_y;
+};
+
+struct cff2_path_procs_extents_t : path_procs_t<cff2_path_procs_extents_t, cff2_cs_interp_env_t<number_t>, cff2_extents_param_t>
+{
+ static void moveto (cff2_cs_interp_env_t<number_t> &env, cff2_extents_param_t& param, const point_t &pt)
+ {
+ param.end_path ();
+ env.moveto (pt);
+ }
+
+ static void line (cff2_cs_interp_env_t<number_t> &env, cff2_extents_param_t& param, const point_t &pt1)
+ {
+ if (!param.is_path_open ())
+ {
+ param.start_path ();
+ param.update_bounds (env.get_pt ());
+ }
+ env.moveto (pt1);
+ param.update_bounds (env.get_pt ());
+ }
+
+ static void curve (cff2_cs_interp_env_t<number_t> &env, cff2_extents_param_t& param, const point_t &pt1, const point_t &pt2, const point_t &pt3)
+ {
+ if (!param.is_path_open ())
+ {
+ param.start_path ();
+ param.update_bounds (env.get_pt ());
+ }
+ /* include control points */
+ param.update_bounds (pt1);
+ param.update_bounds (pt2);
+ env.moveto (pt3);
+ param.update_bounds (env.get_pt ());
+ }
+};
+
+struct cff2_cs_opset_extents_t : cff2_cs_opset_t<cff2_cs_opset_extents_t, cff2_extents_param_t, number_t, cff2_path_procs_extents_t> {};
+
+bool OT::cff2::accelerator_t::get_extents (hb_font_t *font,
+ hb_codepoint_t glyph,
+ hb_glyph_extents_t *extents) const
+{
+#ifdef HB_NO_OT_FONT_CFF
+ /* XXX Remove check when this code moves to .hh file. */
+ return true;
+#endif
+
+ if (unlikely (!is_valid () || (glyph >= num_glyphs))) return false;
+
+ unsigned int fd = fdSelect->get_fd (glyph);
+ const hb_ubytes_t str = (*charStrings)[glyph];
+ cff2_cs_interp_env_t<number_t> env (str, *this, fd, font->coords, font->num_coords);
+ cff2_cs_interpreter_t<cff2_cs_opset_extents_t, cff2_extents_param_t, number_t> interp (env);
+ cff2_extents_param_t param;
+ if (unlikely (!interp.interpret (param))) return false;
+
+ if (param.min_x >= param.max_x)
+ {
+ extents->width = 0;
+ extents->x_bearing = 0;
+ }
+ else
+ {
+ extents->x_bearing = roundf (param.min_x.to_real ());
+ extents->width = roundf (param.max_x.to_real () - extents->x_bearing);
+ }
+ if (param.min_y >= param.max_y)
+ {
+ extents->height = 0;
+ extents->y_bearing = 0;
+ }
+ else
+ {
+ extents->y_bearing = roundf (param.max_y.to_real ());
+ extents->height = roundf (param.min_y.to_real () - extents->y_bearing);
+ }
+
+ font->scale_glyph_extents (extents);
+
+ return true;
+}
+
+bool OT::cff2::accelerator_t::paint_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_paint_funcs_t *funcs, void *data, hb_color_t foreground) const
+{
+ funcs->push_clip_glyph (data, glyph, font);
+ funcs->color (data, true, foreground);
+ funcs->pop_clip (data);
+
+ return true;
+}
+
+struct cff2_path_param_t
+{
+ cff2_path_param_t (hb_font_t *font_, hb_draw_session_t &draw_session_)
+ {
+ draw_session = &draw_session_;
+ font = font_;
+ }
+
+ void move_to (const point_t &p)
+ { draw_session->move_to (font->em_fscalef_x (p.x.to_real ()), font->em_fscalef_y (p.y.to_real ())); }
+
+ void line_to (const point_t &p)
+ { draw_session->line_to (font->em_fscalef_x (p.x.to_real ()), font->em_fscalef_y (p.y.to_real ())); }
+
+ void cubic_to (const point_t &p1, const point_t &p2, const point_t &p3)
+ {
+ draw_session->cubic_to (font->em_fscalef_x (p1.x.to_real ()), font->em_fscalef_y (p1.y.to_real ()),
+ font->em_fscalef_x (p2.x.to_real ()), font->em_fscalef_y (p2.y.to_real ()),
+ font->em_fscalef_x (p3.x.to_real ()), font->em_fscalef_y (p3.y.to_real ()));
+ }
+
+ protected:
+ hb_draw_session_t *draw_session;
+ hb_font_t *font;
+};
+
+struct cff2_path_procs_path_t : path_procs_t<cff2_path_procs_path_t, cff2_cs_interp_env_t<number_t>, cff2_path_param_t>
+{
+ static void moveto (cff2_cs_interp_env_t<number_t> &env, cff2_path_param_t& param, const point_t &pt)
+ {
+ param.move_to (pt);
+ env.moveto (pt);
+ }
+
+ static void line (cff2_cs_interp_env_t<number_t> &env, cff2_path_param_t& param, const point_t &pt1)
+ {
+ param.line_to (pt1);
+ env.moveto (pt1);
+ }
+
+ static void curve (cff2_cs_interp_env_t<number_t> &env, cff2_path_param_t& param, const point_t &pt1, const point_t &pt2, const point_t &pt3)
+ {
+ param.cubic_to (pt1, pt2, pt3);
+ env.moveto (pt3);
+ }
+};
+
+struct cff2_cs_opset_path_t : cff2_cs_opset_t<cff2_cs_opset_path_t, cff2_path_param_t, number_t, cff2_path_procs_path_t> {};
+
+bool OT::cff2::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
+ /* XXX Remove check when this code moves to .hh file. */
+ return true;
+#endif
+
+ if (unlikely (!is_valid () || (glyph >= num_glyphs))) return false;
+
+ unsigned int fd = fdSelect->get_fd (glyph);
+ const hb_ubytes_t str = (*charStrings)[glyph];
+ cff2_cs_interp_env_t<number_t> env (str, *this, fd, font->coords, font->num_coords);
+ cff2_cs_interpreter_t<cff2_cs_opset_path_t, cff2_path_param_t, number_t> interp (env);
+ cff2_path_param_t param (font, draw_session);
+ if (unlikely (!interp.interpret (param))) return false;
+ return true;
+}
+
+#endif