feat: unicode emoji support + other stuff

1 files changed, 46 insertions, 21 deletions

diff --git a/source/rendering/StarFontTextureGroup.cpp b/source/rendering/StarFontTextureGroup.cpp
index d5e6ef9..5f0cdbc 100644
--- a/source/rendering/StarFontTextureGroup.cpp
+++ b/source/rendering/StarFontTextureGroup.cpp
@@ -14,13 +14,13 @@ void FontTextureGroup::cleanup(int64_t timeout) {
 
 void FontTextureGroup::switchFont(String const& font) {
   if (font.empty()) {
-    m_font = m_defaultFont;
+    m_activeFont = m_defaultFont;
     m_fontName.clear();
   }
   else if (m_fontName != font) {
     m_fontName = font;
     auto find = m_fonts.find(font);
-    m_font = find != m_fonts.end() ? find->second : m_defaultFont;
+    m_activeFont = find != m_fonts.end() ? find->second : m_defaultFont;
   }
 }
 
@@ -28,31 +28,35 @@ String const& FontTextureGroup::activeFont() {
   return m_fontName;
 }
 
-void FontTextureGroup::addFont(FontPtr const& font, String const& name, bool isDefault) {
+void FontTextureGroup::addFont(FontPtr const& font, String const& name) {
   m_fonts[name] = font;
-  if (isDefault)
-    m_defaultFont = m_font = font;
 }
 
 void FontTextureGroup::clearFonts() {
   m_fonts.clear();
-  m_font = m_defaultFont;
+  m_activeFont = m_defaultFont;
 }
 
-void FontTextureGroup::setFallbackFont(String const& fontName) {
-  if (auto font = m_fonts.ptr(fontName))
-    m_fallbackFont = *font;
+void FontTextureGroup::setFixedFonts(String const& defaultFontName, String const& fallbackFontName, String const& emojiFontName) {
+  if (auto defaultFont = m_fonts.ptr(defaultFontName))
+    m_defaultFont = m_activeFont = *defaultFont;
+  if (auto fallbackFont = m_fonts.ptr(fallbackFontName))
+    m_fallbackFont = *fallbackFont;
+  if (auto emojiFont = m_fonts.ptr(emojiFontName))
+    m_emojiFont = *emojiFont;
 }
 
 const FontTextureGroup::GlyphTexture& FontTextureGroup::glyphTexture(String::Char c, unsigned size, Directives const* processingDirectives)
 {
-  Font* font = (m_font->exists(c) || !m_fallbackFont) ? m_font.get() : m_fallbackFont.get();
+  Font* font = getFontForCharacter(c);
+  if (font == m_emojiFont.get())
+    processingDirectives = nullptr;
   auto res = m_glyphs.insert(GlyphDescriptor{c, size, processingDirectives ? processingDirectives->hash() : 0, font}, GlyphTexture());
-
+  auto& glyphTexture = res.first->second;
   if (res.second) {
     font->setPixelSize(size);
-    auto pair = font->render(c);
-    Image& image = pair.first;
+    auto renderResult = font->render(c);
+    Image& image = get<0>(renderResult);
     if (processingDirectives) {
       try {
         Directives const& directives = *processingDirectives;
@@ -61,7 +65,7 @@ const FontTextureGroup::GlyphTexture& FontTextureGroup::glyphTexture(String::Cha
         for (auto& entry : directives->entries)
           processImageOperation(entry.operation, image);
 
-        res.first->second.offset = (preSize - Vec2F(image.size())) / 2;
+        glyphTexture.offset = (preSize - Vec2F(image.size())) / 2;
       }
       catch (StarException const&) {
         image.forEachPixel([](unsigned x, unsigned y, Vec4B& pixel) {
@@ -69,15 +73,14 @@ const FontTextureGroup::GlyphTexture& FontTextureGroup::glyphTexture(String::Cha
         });
       }
     }
-    else
-      res.first->second.offset = Vec2F();
 
-    res.first->second.offset += Vec2F(pair.second);
-    res.first->second.texture = m_textureGroup->create(image);
+    glyphTexture.colored = get<2>(renderResult);
+    glyphTexture.offset += Vec2F(get<1>(renderResult));
+    glyphTexture.texture = m_textureGroup->create(image);
   }
 
-  res.first->second.time = Time::monotonicMilliseconds();
-  return res.first->second;
+  glyphTexture.time = Time::monotonicMilliseconds();
+  return glyphTexture;
 }
 
 TexturePtr FontTextureGroup::glyphTexturePtr(String::Char c, unsigned size) {
@@ -89,9 +92,31 @@ TexturePtr FontTextureGroup::glyphTexturePtr(String::Char c, unsigned size, Dire
 }
 
 unsigned FontTextureGroup::glyphWidth(String::Char c, unsigned fontSize) {
-  Font* font = (m_font->exists(c) || !m_fallbackFont) ? m_font.get() : m_fallbackFont.get();
+  Font* font = getFontForCharacter(c);
   font->setPixelSize(fontSize);
   return font->width(c);
 }
 
+Font* FontTextureGroup::getFontForCharacter(String::Char c) {
+  if (((c >= 0x1F600 && c <= 0x1F64F) || // Emoticons
+       (c >= 0x1F300 && c <= 0x1F5FF) || // Misc Symbols and Pictographs
+       (c >= 0x1F680 && c <= 0x1F6FF) || // Transport and Map
+       (c >= 0x1F1E6 && c <= 0x1F1FF) || // Regional country flags
+       (c >= 0x2600  && c <= 0x26FF ) || // Misc symbols 9728 - 9983
+       (c >= 0x2700  && c <= 0x27BF ) || // Dingbats
+       (c >= 0xFE00  && c <= 0xFE0F ) || // Variation Selectors
+       (c >= 0x1F900 && c <= 0x1F9FF) || // Supplemental Symbols and Pictographs
+       (c >= 0x1F018 && c <= 0x1F270) || // Various asian characters
+       (c >= 65024   && c <= 65039  ) || // Variation selector
+       (c >= 9100    && c <= 9300   ) || // Misc items
+       (c >= 8400    && c <= 8447   ))&& // Combining Diacritical Marks for Symbols
+      m_emojiFont->exists(c)
+    )
+    return m_emojiFont.get();
+  else if (m_activeFont->exists(c) || !m_fallbackFont)
+    return m_activeFont.get();
+  else
+    return m_fallbackFont.get();
+}
+
 }