VS Code CSS addition to increase readability on file tree.

readme.md

Increases indentation on the file tree and adds some lines to each directory/file.

Works 15 levels deep, but you can expand it by just adding more of each line thats repeating, i.e.:

• add another box shadow
  • (n*-20px) 0 0 0 rgba(255, 255, 255, 0.4)
• add another padding-left
  • .monaco-tree-row[aria-level="n"] { padding-left: ((n-1)*20)px; }
• add another :before & :after with left positioning
  • .monaco-tree-row[aria-level="n"]:before { left: (((n-1)*20)-9)px; }
  • .monaco-tree-row[aria-level="n"]:after { left: (((n-1)*20)-9)px; }

A bit messy but it works. If VSCode had some LESS/SASS stylesheets and/or functionality for user styles, this would be much nicer, but we've got to work with what we've got.

• Find your VSCode install (mine was C:/Program Files/Microsoft VS Code, macOS should be /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.main.css)
• Go to resources/app/out/vs/workbench
• Open workbench.main.css
• Add the following CSS:

style.css

.monaco-tree-row {
	overflow: hidden;
	position: relative;
}

.monaco-tree-row:before {
	content: '';
	background: rgba(255, 255, 255, 0.4);
	position: absolute;
	width: 1px;
	height: 100%;
}

.monaco-tree-row:after {
	content: '';
	background: rgba(255, 255, 255, 0.4);
	position: absolute;
	width: 14px;
	height: 1px;
	top: 50%;
}

.monaco-tree-row:not([aria-level="1"]):not([aria-level="2"]):before {
	box-shadow:  -20px 0 0 0 rgba(255, 255, 255, 0.4),
				 -40px 0 0 0 rgba(255, 255, 255, 0.4),
				 -60px 0 0 0 rgba(255, 255, 255, 0.4),
				 -80px 0 0 0 rgba(255, 255, 255, 0.4),
				-100px 0 0 0 rgba(255, 255, 255, 0.4),
				-120px 0 0 0 rgba(255, 255, 255, 0.4),
				-140px 0 0 0 rgba(255, 255, 255, 0.4),
				-160px 0 0 0 rgba(255, 255, 255, 0.4),
				-180px 0 0 0 rgba(255, 255, 255, 0.4),
				-200px 0 0 0 rgba(255, 255, 255, 0.4),
				-220px 0 0 0 rgba(255, 255, 255, 0.4),
				-240px 0 0 0 rgba(255, 255, 255, 0.4),
				-260px 0 0 0 rgba(255, 255, 255, 0.4);
}

.monaco-tree-row[aria-level="1"]  { padding-left:   0px !important; }
.monaco-tree-row[aria-level="2"]  { padding-left:  20px !important; }
.monaco-tree-row[aria-level="3"]  { padding-left:  40px !important; }
.monaco-tree-row[aria-level="4"]  { padding-left:  60px !important; }
.monaco-tree-row[aria-level="5"]  { padding-left:  80px !important; }
.monaco-tree-row[aria-level="6"]  { padding-left: 100px !important; }
.monaco-tree-row[aria-level="7"]  { padding-left: 120px !important; }
.monaco-tree-row[aria-level="8"]  { padding-left: 140px !important; }
.monaco-tree-row[aria-level="9"]  { padding-left: 160px !important; }
.monaco-tree-row[aria-level="10"] { padding-left: 180px !important; }
.monaco-tree-row[aria-level="11"] { padding-left: 200px !important; }
.monaco-tree-row[aria-level="12"] { padding-left: 220px !important; }
.monaco-tree-row[aria-level="13"] { padding-left: 240px !important; }
.monaco-tree-row[aria-level="14"] { padding-left: 260px !important; }
.monaco-tree-row[aria-level="15"] { padding-left: 280px !important; }

.monaco-tree-row[aria-level="1"]:before { display: none; }
.monaco-tree-row[aria-level="2"]:before   { left:  11px; }
.monaco-tree-row[aria-level="3"]:before   { left:  31px; }
.monaco-tree-row[aria-level="4"]:before   { left:  51px; }
.monaco-tree-row[aria-level="5"]:before   { left:  71px; }
.monaco-tree-row[aria-level="6"]:before   { left: 91px; }
.monaco-tree-row[aria-level="7"]:before   { left: 111px; }
.monaco-tree-row[aria-level="8"]:before   { left: 131px; }
.monaco-tree-row[aria-level="9"]:before   { left: 151px; }
.monaco-tree-row[aria-level="10"]:before  { left: 171px; }
.monaco-tree-row[aria-level="11"]:before  { left: 191px; }
.monaco-tree-row[aria-level="12"]:before  { left: 211px; }
.monaco-tree-row[aria-level="13"]:before  { left: 231px; }
.monaco-tree-row[aria-level="14"]:before  { left: 251px; }
.monaco-tree-row[aria-level="15"]:before  { left: 271px; }

.monaco-tree-row[aria-level="1"]:after { display: none; }
.monaco-tree-row[aria-level="2"]:after   { left:  11px; }
.monaco-tree-row[aria-level="3"]:after   { left:  31px; }
.monaco-tree-row[aria-level="4"]:after   { left:  51px; }
.monaco-tree-row[aria-level="5"]:after   { left:  71px; }
.monaco-tree-row[aria-level="6"]:after   { left: 91px; }
.monaco-tree-row[aria-level="7"]:after   { left: 111px; }
.monaco-tree-row[aria-level="8"]:after   { left: 131px; }
.monaco-tree-row[aria-level="9"]:after   { left: 151px; }
.monaco-tree-row[aria-level="10"]:after  { left: 171px; }
.monaco-tree-row[aria-level="11"]:after  { left: 191px; }
.monaco-tree-row[aria-level="12"]:after  { left: 211px; }
.monaco-tree-row[aria-level="13"]:after  { left: 231px; }
.monaco-tree-row[aria-level="14"]:after  { left: 251px; }
.monaco-tree-row[aria-level="15"]:after  { left: 271px; }

I've fixed it to work with the new Jan 2019 update
There were 3 main fixes I added,

1. The tree row class was updated from monaco-tree-row to monaco-list-row
2. In the custom css file, line 21, the monica-tree-row had a position: relative rule, which caused vertical spacing issues
3. The .monaco-tl-twistie div had an inline margin-left: 40px rule, which I had to override (line 15)

https://gist.github.com/Lightfire228/39dc2cf403237a190e79a000912691b2

I used @samdenty 's gist as a base, but you may have to tweak it to get it to look 'right'

Edit: I fixed an issue with the lines disappearing on when hovering or selecting a folder more than 3 deep

首选项：

Tree: Indent
控制树缩进(以像素为单位)。
24px，刚好

in the window system
I cannot find the workbench.main.css file, but I can only find the workbench.desktop.main.css and the modification does not take effect