adjust truncated line

YYText/Component/YYTextLayout.m

@@ -675,7 +675,16 @@ OSSpinLockUnlock(&_lock);
                 [lastLineText appendAttributedString:truncationToken];
                 CTLineRef ctLastLineExtend = CTLineCreateWithAttributedString((CFAttributedStringRef)lastLineText);
                 if (ctLastLineExtend) {
-                    CTLineRef ctTruncatedLine = CTLineCreateTruncatedLine(ctLastLineExtend, lastLine.width, type, truncationTokenLine);
+                    CGFloat truncatedWidth = lastLine.width;
+                    CGRect cgPathRect = CGRectZero;
+                    if (CGPathIsRect(cgPath, &cgPathRect)) {
+                        if (isVerticalForm) {
+                            truncatedWidth = cgPathRect.size.height;
+                        } else {
+                            truncatedWidth = cgPathRect.size.width;
+                        }
+                    }
+                    CTLineRef ctTruncatedLine = CTLineCreateTruncatedLine(ctLastLineExtend, truncatedWidth, type, truncationTokenLine);
                     CFRelease(ctLastLineExtend);
                     if (ctTruncatedLine) {
                         truncatedLine = [YYTextLine lineWithCTLine:ctTruncatedLine position:lastLine.position vertical:isVerticalForm];