draw.io插件在vscode中一体化导出高质量图片

‘’’
Author: zzx
Date: 2022-07-30 15:52:15
LastEditors: zdl
LastEditTime: 2022-07-30 16:03:20
FilePath: \matlabcodef:\BaiduNetdiskWorkspace\markdown写杂谈\python导出drawio文件
Description:

Copyright © 2022 by zdl, All Rights Reserved.
‘’’

vscode一体化导出drawio

需要的工具：vscode, draw.io扩展，draw.io桌面版 、python

提示：这个方法并没有简化流程，只是能够减少打开窗口，在vscode中直接查看原始文件，导出文件，效率并没有显著提升。

啰嗦的部分：
drawio流程图绘制软件比visio好用。而且vscode有插件。vs插件的优点在于支持mermaid流程图，缺点非常明显不支持指定分辨率图像导出。
网上检索发现drawio的桌面版可以在命令行操作。在drawio安装目录下运行cmd，然后通过draw.io -help 命令可以查看全部命令。
查看命令发现没有针对性的dpi设置。我就想到给图片输入宽度和高度的方式。根据我猜测这个宽度和高度应该对应的就是像素点数量，所以我就按照实际尺寸，以及dpi的定义
写了一个命令， 发现可用。但是每次都要计算宽度、高度、调用cmd命令窗口，太麻烦。功能强大的python加上插件齐全的vscode能不能全部实现呢？
折腾了几个小时，终于搞定了。

进入正题：
1、安装draw.io插件，和桌面版，记住桌面版的路径
2、绘制好的图片有一个实际的尺寸，记住实际尺寸的宽和高
3、python转换 宽度

dpivalue=600#dpi
realwidth=89.4#mm
realheight=81.2#mm
width=round(dpivalue*realwidth/25.4)
height=round(dpivalue*realheight/25.4)

4、 构造命令行，不嫌麻烦可以自己写完整目录

inputfilepath=r'F:\BaiduNetdiskWorkspace\00typora\大论文\drawio\算法流程图.drawio'
outputfilepath=r'F:\BaiduNetdiskWorkspace\00typora\大论文\drawio\test.png'
starttext=r'draw.io -x '
midletext=r" -f png -t --width "+str(width)+r" --height " +str(height)+r" -o "
commandtext1=starttext+inputfilepath+midletext+outputfilepath

5、 改变python文件工作目录并执行命令

path="D:/draw.io/"#安装文件夹
os.chdir( path )# 修改当前工作目录
v2=os.system(commandtext1)

完整的代码

代码量并不大，非常简单

'''
Author: zzx
Date: 2022-07-27 10:12:38
LastEditors: zdl
LastEditTime: 2022-07-30 16:10:22
FilePath: \matlabcodef:\BaiduNetdiskWorkspace\00typora\大论文\drawio\output.py
Description: 

Copyright (c) 2022 by zdl, All Rights Reserved. 
'''
import os
dpivalue=600#dpi
realwidth=89.4#mm
realheight=81.2#mm
width=round(dpivalue*realwidth/25.4)
height=round(dpivalue*realheight/25.4)
inputfilepath=r'F:\BaiduNetdiskWorkspace\00typora\大论文\drawio\算法流程图.drawio'
outputfilepath=r'F:\BaiduNetdiskWorkspace\00typora\大论文\drawio\test.png'
starttext=r'draw.io -x '
midletext=r" -f png -t --width "+str(width)+r" --height " +str(height)+r" -o "
commandtext1=starttext+inputfilepath+midletext+outputfilepath
path="D:/draw.io/"#安装文件夹
os.chdir( path )# 修改当前工作目录
v2=os.system(commandtext1)

# 快速运行F5
# print(v2)

#关于python权限的问题
# https://blog.csdn.net/qq_33731081/article/details/103812749
# 如何在python中运行命令行命令
# https://blog.csdn.net/qq_34769162/article/details/119037908
#报错为空值的问题
# https://blog.csdn.net/xiaoxiaogh/article/details/88320102

#关于drawio导出命令,灵感来源https://j2r2b.github.io/2019/08/06/drawio-cli.html
'''
Options:
  -V, --version                      output the version number
  -c, --create                       creates a new empty file if no file is
                                     passed
  -k, --check                        does not overwrite existing files
  -x, --export                       export the input file/folder based on the
                                     given options
  -r, --recursive                    for a folder input, recursively convert
                                     all files in sub-folders also
  -o, --output <output file/folder>  specify the output file/folder. If
                                     omitted, the input file name is used for
                                     output with the specified format as
                                     extension
  -f, --format <format>              if output file name extension is
                                     specified, this option is ignored (file
                                     type is determined from output extension,
                                     possible export formats are pdf, png, jpg,
                                     svg, vsdx, and xml) (default: "pdf")
  -q, --quality <quality>            output image quality for JPEG (default:
                                     90)
  -t, --transparent                  set transparent background for PNG
  -e, --embed-diagram                includes a copy of the diagram (for PNG,
                                     SVG and PDF formats only)
  --embed-svg-images                 Embed Images in SVG file (for SVG format
                                     only)
  -b, --border <border>              sets the border width around the diagram
                                     (default: 0)
  -s, --scale <scale>                scales the diagram size
  --width <width>                    fits the generated image/pdf into the
                                     specified width, preserves aspect ratio.
  --height <height>                  fits the generated image/pdf into the
                                     specified height, preserves aspect ratio.
  --crop                             crops PDF to diagram size
  -a, --all-pages                    export all pages (for PDF format only)
  -p, --page-index <pageIndex>       selects a specific page, if not specified
                                     and the format is an image, the first page
                                     is selected
  -g, --page-range <from>..<to>      selects a page range (for PDF format only)
  -u, --uncompressed                 Uncompressed XML output (for XML format
                                     only)
  --enable-plugins                   Enable Plugins
  -h, --help                         display help for command
'''