add unicode funcs for HarzBuff

configure.ac

@@ -2000,7 +2000,7 @@ if test "x$build_ttf_support" = "xyes"; then
     if test "x$build_complex_scripts" = "xyes"; then
         dnl Check for HarfBuzz library
         AC_CHECK_LIB(harfbuzz, hb_version,
-            DEP_LIBS="$DEP_LIBS -lharfbuzz -lfreetype",
+            DEP_LIBS="$DEP_LIBS -lharfbuzz",
             build_complex_scripts="no")
     fi
 

src/font/Makefile.am

@@ -16,7 +16,7 @@ SRC_FILES = charset.c charset-arabic.c legacy-bidi.c charset-unicode.c \
             unicode-bidi.c \
             unicode-break.c \
             unicode-joining-types.c unicode-joining.c unicode-shape.c \
-            unicode-shape-arabic.c
+            unicode-shape-arabic.c harzbuff-minigui-funcs.c
 
 HDR_FILES = charset.h rawbitmap.h varbitmap.h freetype2.h qpf.h se_minigui.h \
             upf.h bitmapfont.h unicode-bidi-tables.h \

src/font/freetype2.c

@@ -1147,6 +1147,10 @@ error_ftc_manager:
     FTC_Manager_Done (ft_cache_manager);
 #endif /* _MGFONT_TTF_CACHE */
 
+#ifdef _MGCOMPLEX_SCRIPTS
+    __mg_init_harzbuff_funcs();
+#endif
+
     return TRUE;
 
 error_library:
@@ -1171,6 +1175,10 @@ void font_TermFreetypeLibrary (void)
         FT_Done_FreeType (ft_library);
 
     FT_DESTROY_LOCK(&ft_lock);
+
+#ifdef _MGCOMPLEX_SCRIPTS
+    __mg_term_harzbuff_funcs();
+#endif
 }
 
 /**************************** Global data ************************************/

src/font/freetype2.h

@@ -146,6 +146,11 @@ extern void __mg_ttc_sys_deinit(void);
 extern TTFCACHEINFO *__mg_ttc_search(HCACHE hCache, Glyph32 gv, int *size);
 extern void __mg_ttc_refer(HCACHE hCache);
 
+#ifdef _MGCOMPLEX_SCRIPTS
+extern void __mg_init_harzbuff_funcs(void);
+extern void __mg_term_harzbuff_funcs(void);
+#endif
+
 #endif
 
 #ifdef __cplusplus

src/font/harzbuff-minigui-funcs.c

@@ -0,0 +1,157 @@
+/*
+ *   This file is part of MiniGUI, a mature cross-platform windowing
+ *   and Graphics User Interface (GUI) support system for embedded systems
+ *   and smart IoT devices.
+ *
+ *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 1998~2002, WEI Yongming
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *   Or,
+ *
+ *   As this program is a library, any link to this program must follow
+ *   GNU General Public License version 3 (GPLv3). If you cannot accept
+ *   GPLv3, you need to be licensed from FMSoft.
+ *
+ *   If you have got a commercial license of this program, please use it
+ *   under the terms and conditions of the commercial license.
+ *
+ *   For more information about the commercial license, please refer to
+ *   <http://www.minigui.com/en/about/licensing-policy/>.
+ */
+
+/*
+** harzbuff-minigui-funcs.c:
+**
+**  Functions for using HarfBuzz with the MiniGUI to provide Unicode data.
+**
+** Create by WEI Yongming at 2019/03/14
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "common.h"
+
+#if defined(_MGCHARSET_UNICODE) && defined(_MGCOMPLEX_SCRIPTS)
+
+#include "minigui.h"
+#include "gdi.h"
+
+#include <hb.h>
+
+static hb_unicode_combining_class_t
+hb_minigui_unicode_combining_class (hb_unicode_funcs_t *ufuncs,
+        hb_codepoint_t      unicode,
+        void               *user_data)
+
+{
+    return (hb_unicode_combining_class_t) UCharCombiningClass (unicode);
+}
+
+static hb_unicode_general_category_t
+hb_minigui_unicode_general_category (hb_unicode_funcs_t *ufuncs,
+        hb_codepoint_t      unicode,
+        void               *user_data)
+{
+    /* hb_unicode_general_category_t and GUnicodeType are identical */
+    return (hb_unicode_general_category_t) UCharGetCategory (unicode);
+}
+
+static hb_codepoint_t
+hb_minigui_unicode_mirroring (hb_unicode_funcs_t *ufuncs,
+        hb_codepoint_t      unicode,
+        void               *user_data)
+{
+    UCharGetMirror (unicode, &unicode);
+    return unicode;
+}
+
+static hb_script_t
+hb_minigui_unicode_script (hb_unicode_funcs_t *ufuncs,
+        hb_codepoint_t      unicode,
+        void               *user_data)
+{
+    return UCharScriptTypeToISO15924 (UCharGetScriptType(unicode));
+}
+
+static hb_bool_t
+hb_minigui_unicode_compose (hb_unicode_funcs_t *ufuncs,
+        hb_codepoint_t      a,
+        hb_codepoint_t      b,
+        hb_codepoint_t     *ab,
+        void               *user_data)
+{
+    return UCharCompose (a, b, ab);
+}
+
+static hb_bool_t
+hb_minigui_unicode_decompose (hb_unicode_funcs_t *ufuncs,
+        hb_codepoint_t      ab,
+        hb_codepoint_t     *a,
+        hb_codepoint_t     *b,
+        void               *user_data)
+{
+    return UCharDecompose(ab, a, b);
+}
+
+static hb_unicode_funcs_t *funcs;
+static hb_unicode_funcs_t *get_unicode_funcs(void)
+{
+    funcs = hb_unicode_funcs_create (NULL);
+
+    hb_unicode_funcs_set_combining_class_func (funcs,
+            hb_minigui_unicode_combining_class, NULL, NULL);
+    hb_unicode_funcs_set_general_category_func (funcs,
+            hb_minigui_unicode_general_category, NULL, NULL);
+    hb_unicode_funcs_set_mirroring_func (funcs,
+            hb_minigui_unicode_mirroring, NULL, NULL);
+    hb_unicode_funcs_set_script_func (funcs,
+            hb_minigui_unicode_script, NULL, NULL);
+    hb_unicode_funcs_set_compose_func (funcs,
+            hb_minigui_unicode_compose, NULL, NULL);
+    hb_unicode_funcs_set_decompose_func (funcs,
+            hb_minigui_unicode_decompose, NULL, NULL);
+
+    hb_unicode_funcs_make_immutable (funcs);
+
+    return funcs;
+}
+
+typedef hb_unicode_funcs_t *(*hb_get_unicode_funcs) (void);
+extern hb_get_unicode_funcs __hb_extern_get_unicode_funcs;
+
+void __mg_init_harzbuff_funcs(void)
+{
+    _DBG_PRINTF("%s: called\n", __FUNCTION__);
+    __hb_extern_get_unicode_funcs = get_unicode_funcs;
+}
+
+void __mg_term_harzbuff_funcs(void)
+{
+    _DBG_PRINTF("%s: called\n", __FUNCTION__);
+
+    if (funcs) {
+        hb_unicode_funcs_destroy(funcs);
+    }
+    else {
+        _ERR_PRINTF("%s: hb_unicode_funcs_t object is NULL\n",
+            __FUNCTION__);
+    }
+}
+
+#endif /* defined(_MGCHARSET_UNICODE) && defined(_MGCOMPLEX_SCRIPTS) */
+