!488 [206_7] Emoji字体自动选择

Author: songhahaha66

TeXmacs/tests/tmu/206_7.tmu

@@ -0,0 +1,24 @@
+<TMU|<tuple|1.1.0|2025.1.0>>
+
+<style|<tuple|generic|chinese|number-europe>>
+
+<\body>
+  <doc-data|<doc-title|😀Emoji支持>>
+
+  <section|Mogan已经支持Emoji渲染🎉>
+
+  Enjoy it!🎉🎉🎉🎉🎉🎉🎉
+</body>
+
+<\initial>
+  <\collection>
+    <associate|page-medium|paper>
+    <associate|page-screen-margin|false>
+  </collection>
+</initial>
+
+<\references>
+  <\collection>
+    <associate|auto-1|<tuple|1|?>>
+  </collection>
+</references>

devel/206_7.md

@@ -0,0 +1,19 @@
+# Emoji字体自动选择
+
+## 2025/08/02
+
+### 如何测试
+
+206_7.tmu
+
+### What
+
+新加emoji字体自动选择
+
+### How
+
+修改了smart_font.cpp和font.cpp,font.hpp
+
+### Why
+
+需要自动选择emoji字体，免去手动选择

src/Graphics/Fonts/font.cpp

@@ -650,6 +650,18 @@ default_korean_font_name () {
   return "roman";
 }
 
+string
+default_emoji_font_name () {
+  if (has_user_preference ("default emoji font name")) {
+    return get_user_preference ("default emoji font name");
+  }
+
+  // Noto Color Emoji is the default emoji font on all system if exists
+  if (tt_font_exists ("NotoColorEmoji")) return "Noto Color Emoji";
+
+  return "roman";
+}
+
 bool
 use_macos_fonts () {
 #ifdef OS_MACOS

src/Graphics/Fonts/font.hpp

@@ -184,6 +184,7 @@ struct font_rep : rep<font> {
 string default_chinese_font_name ();
 string default_japanese_font_name ();
 string default_korean_font_name ();
+string default_emoji_font_name ();
 
 font error_font (font fn);
 font virtual_font (font base, string fam, int sz, int hdpi, int vdpi, bool ext);

src/Graphics/Fonts/smart_font.cpp

@@ -591,6 +591,15 @@ math_fix (string family, string series, string shape) {
   return family;
 }
 
+string
+emoji_fix (string family, string series, string shape) {
+  if (contains (family, "emoji=")) {
+    return family;
+  }
+  string name= default_emoji_font_name ();
+  return family * ",emoji=" * name;
+}
+
 /******************************************************************************
  * The smart font class
  ******************************************************************************/
@@ -1690,6 +1699,7 @@ smart_font_bis (string family, string variant, string series, string shape,
   family= kepler_fix (family, series, shape);
   // family= stix_fix (family, series, shape);
   family   = math_fix (family, series, shape);
+  family   = emoji_fix (family, series, shape);
   string sh= shape;
   if (shape == "mathitalic" || shape == "mathshape") sh= "right";
   string mfam   = main_family (family);