Don't truncate the lines on chinese chars

radio/src/thirdparty/libopenui/src/bitmapbuffer.cpp

@@ -639,6 +639,7 @@ coord_t BitmapBuffer::drawSizedText(coord_t x, coord_t y, const char * s, uint8_
 
   while (len--) {
     unsigned int c = uint8_t(*s);
+    // TRACE("c = %d %o 0x%X '%c'", c, c, c, c);
 
     if (!c) {
       break;
@@ -647,6 +648,7 @@ coord_t BitmapBuffer::drawSizedText(coord_t x, coord_t y, const char * s, uint8_
       // CJK char
       s++;
       c = uint8_t(*s) + ((c & 0x01u) << 8u) - 1;
+      // TRACE("CJK = %d", c);
       if (c >= 0x101)
         c -= 1;
       c += CJK_FIRST_LETTER_INDEX;

radio/src/thirdparty/libopenui/src/libopenui_helpers.h

@@ -79,3 +79,14 @@ inline std::string TEXT_AT_INDEX(const char * val, uint8_t idx)
   return std::string(start, min<uint8_t>(val[0], (uint8_t)strlen(start)));
 }
 
+inline const char * findNextLine(const char * stack)
+{
+  while (true) {
+    const char * pos = strchr(stack, '\n');
+    if (!pos)
+      return nullptr;
+    if (pos == stack || *((uint8_t *)(pos - 1)) < 0xFE)
+      return pos;
+    stack = pos + 1;
+  }
+}

radio/src/thirdparty/libopenui/src/static.cpp

@@ -37,13 +37,13 @@ void StaticText::paint(BitmapBuffer * dc)
   coord_t y = (textFlags & VCENTERED) ? (rect.h - getFontHeight(textFlags)) / 2 : FIELD_PADDING_TOP;
 
   auto start = text.c_str();
-  auto nextline = strchr(start, '\n');
+  auto nextline = findNextLine(start);
   if (nextline) {
     auto current = start;
     do {
       dc->drawText(x, y, text.substr(current - start, nextline - current).c_str(), textFlags);
       current = nextline + 1;
-      nextline = strchr(current, '\n');
+      nextline = findNextLine(current);
       y += getFontHeight(textFlags) + 2;
     } while (nextline);
     dc->drawText(x, y, current, textFlags);
@@ -51,5 +51,4 @@ void StaticText::paint(BitmapBuffer * dc)
   else {
     dc->drawText(x, y, start, textFlags);
   }
-
 }