--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/harfbuzz/util/view-options.hh	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,123 @@
+/*
+ * Copyright © 2011  Google, 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.
+ *
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#ifndef VIEW_OPTIONS_HH
+#define VIEW_OPTIONS_HH
+
+#include "options.hh"
+
+#define DEFAULT_MARGIN 16
+#define DEFAULT_FORE "#000000"
+#define DEFAULT_BACK "#FFFFFF"
+
+struct view_options_t
+{
+  ~view_options_t ()
+  {
+    g_free (fore);
+    g_free (back);
+  }
+
+  void add_options (option_parser_t *parser);
+
+  hb_bool_t annotate = false;
+  char *fore = nullptr;
+  char *back = nullptr;
+  double line_space = 0;
+  bool have_font_extents = false;
+  struct font_extents_t {
+    double ascent, descent, line_gap;
+  } font_extents = {0., 0., 0.};
+  struct margin_t {
+    double t, r, b, l;
+  } margin = {DEFAULT_MARGIN, DEFAULT_MARGIN, DEFAULT_MARGIN, DEFAULT_MARGIN};
+};
+
+
+static gboolean
+parse_font_extents (const char *name G_GNUC_UNUSED,
+		    const char *arg,
+		    gpointer    data,
+		    GError    **error G_GNUC_UNUSED)
+{
+  view_options_t *view_opts = (view_options_t *) data;
+  view_options_t::font_extents_t &e = view_opts->font_extents;
+  switch (sscanf (arg, "%lf%*[ ,]%lf%*[ ,]%lf", &e.ascent, &e.descent, &e.line_gap)) {
+    case 1: HB_FALLTHROUGH;
+    case 2: HB_FALLTHROUGH;
+    case 3:
+      view_opts->have_font_extents = true;
+      return true;
+    default:
+      g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
+		   "%s argument should be one to three space-separated numbers",
+		   name);
+      return false;
+  }
+}
+
+static gboolean
+parse_margin (const char *name G_GNUC_UNUSED,
+	      const char *arg,
+	      gpointer    data,
+	      GError    **error G_GNUC_UNUSED)
+{
+  view_options_t *view_opts = (view_options_t *) data;
+  view_options_t::margin_t &m = view_opts->margin;
+  switch (sscanf (arg, "%lf%*[ ,]%lf%*[ ,]%lf%*[ ,]%lf", &m.t, &m.r, &m.b, &m.l)) {
+    case 1: m.r = m.t; HB_FALLTHROUGH;
+    case 2: m.b = m.t; HB_FALLTHROUGH;
+    case 3: m.l = m.r; HB_FALLTHROUGH;
+    case 4: return true;
+    default:
+      g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
+		   "%s argument should be one to four space-separated numbers",
+		   name);
+      return false;
+  }
+}
+
+void
+view_options_t::add_options (option_parser_t *parser)
+{
+  GOptionEntry entries[] =
+  {
+    {"annotate",	0, 0, G_OPTION_ARG_NONE,	&this->annotate,		"Annotate output rendering",				nullptr},
+    {"background",	0, 0, G_OPTION_ARG_STRING,	&this->back,			"Set background color (default: " DEFAULT_BACK ")",	"rrggbb/rrggbbaa"},
+    {"foreground",	0, 0, G_OPTION_ARG_STRING,	&this->fore,			"Set foreground color (default: " DEFAULT_FORE ")",	"rrggbb/rrggbbaa"},
+    {"line-space",	0, 0, G_OPTION_ARG_DOUBLE,	&this->line_space,		"Set space between lines (default: 0)",			"units"},
+    {"font-extents",	0, 0, G_OPTION_ARG_CALLBACK,	(gpointer) &parse_font_extents,	"Set font ascent/descent/line-gap (default: auto)","one to three numbers"},
+    {"margin",		0, 0, G_OPTION_ARG_CALLBACK,	(gpointer) &parse_margin,	"Margin around output (default: " G_STRINGIFY(DEFAULT_MARGIN) ")","one to four numbers"},
+    {nullptr}
+  };
+  parser->add_group (entries,
+		     "view",
+		     "View options:",
+		     "Options for output rendering",
+		     this);
+}
+
+#endif