new feature: use Text::getLineCount to get the number of rows

core/Node/Text.cpp

@@ -99,6 +99,13 @@ UINT32 e2d::Text::getColor() const
 	return m_Font.color;
 }
 
+int e2d::Text::getLineCount() const
+{
+	DWRITE_TEXT_METRICS metrics;
+	m_pDWriteTextLayout->GetMetrics(&metrics);
+	return static_cast<int>(metrics.lineCount);
+}
+
 bool e2d::Text::isItalic() const
 {
 	return m_Font.italic;

core/enode.h

@@ -577,6 +577,9 @@ public:
 	// 获取文字颜色
 	UINT32 getColor() const;
 
+	// 获取文本显示行数
+	int getLineCount() const;
+
 	// 是否是斜体
 	bool isItalic() const;