add a lib for rendering text in sdl2 and rules to make in makefile

2026-01-21 14:45:11 -06:00
parent f3c0aafe2f
commit e7d9c013f4
1754 changed files with 850297 additions and 0 deletions
--- a/SDL2_ttf/external/harfbuzz/util/face-options.hh
+++ b/SDL2_ttf/external/harfbuzz/util/face-options.hh
@@ -0,0 +1,142 @@
+/*
+ * 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 FACE_OPTIONS_HH
+#define FACE_OPTIONS_HH
+
+#include "options.hh"
+
+struct face_options_t
+{
+  ~face_options_t ()
+  {
+    g_free (font_file);
+  }
+
+  void set_face (hb_face_t *face_)
+  { face = face_; }
+
+  void add_options (option_parser_t *parser);
+
+  void post_parse (GError **error);
+
+  static struct cache_t
+  {
+    ~cache_t ()
+    {
+      g_free (font_path);
+      hb_blob_destroy (blob);
+      hb_face_destroy (face);
+    }
+
+    char *font_path = nullptr;
+    hb_blob_t *blob = nullptr;
+    unsigned face_index = (unsigned) -1;
+    hb_face_t *face = nullptr;
+  } cache;
+
+  char *font_file = nullptr;
+  unsigned face_index = 0;
+
+  hb_blob_t *blob = nullptr;
+  hb_face_t *face = nullptr;
+};
+
+
+face_options_t::cache_t face_options_t::cache {};
+
+void
+face_options_t::post_parse (GError **error)
+{
+  if (!font_file)
+  {
+    g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_FAILED,
+		 "No font file set");
+    return;
+  }
+
+  assert (font_file);
+
+  const char *font_path = font_file;
+
+  if (0 == strcmp (font_path, "-"))
+  {
+#if defined(_WIN32) || defined(__CYGWIN__)
+    setmode (fileno (stdin), O_BINARY);
+    font_path = "STDIN";
+#else
+    font_path = "/dev/stdin";
+#endif
+  }
+
+  if (!cache.font_path || 0 != strcmp (cache.font_path, font_path))
+  {
+    hb_blob_destroy (cache.blob);
+    cache.blob = hb_blob_create_from_file_or_fail (font_path);
+
+    free ((char *) cache.font_path);
+    cache.font_path = g_strdup (font_path);
+
+    if (!cache.blob)
+    {
+      g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_FAILED,
+		   "%s: Failed reading file", font_path);
+      return;
+    }
+
+    hb_face_destroy (cache.face);
+    cache.face = nullptr;
+    cache.face_index = (unsigned) -1;
+  }
+
+  if (cache.face_index != face_index)
+  {
+    hb_face_destroy (cache.face);
+    cache.face = hb_face_create (cache.blob, face_index);
+    cache.face_index = face_index;
+  }
+
+  blob = cache.blob;
+  face = cache.face;
+}
+
+void
+face_options_t::add_options (option_parser_t *parser)
+{
+  GOptionEntry entries[] =
+  {
+    {"font-file",	0, 0, G_OPTION_ARG_STRING,	&this->font_file,		"Set font file-name",				"filename"},
+    {"face-index",	'y', 0, G_OPTION_ARG_INT,	&this->face_index,		"Set face index (default: 0)",			"index"},
+    {nullptr}
+  };
+  parser->add_group (entries,
+		     "face",
+		     "Font-face options:",
+		     "Options for the font face",
+		     this);
+}
+
+#endif