Method _create_base_xml

modules/xml_merger.py:416–444

创建DrawIO基础XML结构

(self, canvas_width: int, canvas_height: int)

            return None
    
    def _create_base_xml(self, canvas_width: int, canvas_height: int) -> ET.Element:
        """创建DrawIO基础XML结构"""
        mxfile = ET.Element("mxfile", {"host": "app.diagrams.net", "type": "device"})
        diagram = ET.SubElement(mxfile, "diagram", {"id": "merged", "name": "Page-1"})
        
        mx_graph_model = ET.SubElement(diagram, "mxGraphModel", {
            "dx": str(canvas_width),
            "dy": str(canvas_height),
            "grid": "1",
            "gridSize": "10",
            "guides": "1",
            "tooltips": "1",
            "connect": "1",
            "arrows": "1",
            "fold": "1",
            "page": "1",
            "pageScale": "1",
            "pageWidth": str(canvas_width),
            "pageHeight": str(canvas_height),
            "math": "0",
            "shadow": "0",
            "background": "#ffffff"
        })
        
        root = ET.SubElement(mx_graph_model, "root")
        ET.SubElement(root, "mxCell", {"id": "0"})
        ET.SubElement(root, "mxCell", {"id": "1", "parent": "0"})
        
        return mxfile
    
    def _prettify_xml(self, elem: ET.Element) -> str:
        """格式化XML输出（移除版本声明，过滤空行）"""