Ticket #8928: sdl-caption.diff

backends/platform/sdl/sdl.cpp

@@ -383 +383 @@
 }
 
 void OSystem_SDL::setWindowCaption(const char *caption) {
-        SDL_WM_SetCaption(caption, caption);
+        // SDL expects the string to be encoded as UTF-8, but ScummVM uses
+        // ISO 8859-1 (Latin-1) internally. Convert the string, if necessary.
+
+        int len = strlen(caption);
+        int utf8len = 0;
+        int i;
+
+        for (i = 0; i < len; i++) {
+                if (caption[i] & 0x80)
+                        utf8len += 2;
+                else
+                        utf8len++;
+        }
+
+        if (utf8len > len) {
+                char *utf8caption = (char *)malloc(utf8len);
+                int j = 0;
+
+                for (i = 0; i < len; i++) {
+                        if (caption[i] & 0x80) {
+                                utf8caption[j++] = 0xC0 | ((caption[i] >> 6) & 0x03);
+                                utf8caption[j++] = 0x80 | (caption[i] & 0x3F);
+                        } else
+                                utf8caption[j++] = caption[i];
+                }
+
+                SDL_WM_SetCaption(utf8caption, utf8caption);
+                free(utf8caption);
+        } else
+                SDL_WM_SetCaption(caption, caption);
 }
 
 bool OSystem_SDL::hasFeature(Feature f) {