Fixate folders using a custom cc.json

Introduction

The Squarified-Tree-Map-Algorithm generates a layout for the visualized map. The layout varies depending on the area of each node. Adding a new file to a folder might increase the area of the parent folder, so that the algorithm decides that the parent-folder needs to be relocated. Thus, folders may not be located at the same position anymore as before. Another way to follow this problem is by changing the area-metric.

Fixate folders

In order to prevent folders from changing locations, we introduced a new attribute to the .cc.json called fixedPosition. This attribute is not auto-generated during the analysis and has to be defined manually by editing the .cc.json.

Setting this property is restricted to the top level folders and won’t have any effect on sub-folders (folders in folders).

API

 "fixedPosition": {
    "left": 60,
    "top:": 40,
    "width": 35,
    "height": 55
 }

The property values must be numbers in the range between 0 and 100. They represent the size of the value in percent.

Example

{
	"projectName": "example-project",
	"apiVersion": "1.2",
	"nodes": [
		{
			"name": "root",
			"type": "Folder",
			"attributes": {},
			"children": [
				{
					"name": "folder_1_red",
					"type": "Folder",
					"attributes": {},
					"children": [],
					"fixedPosition": {
						"left": 10,
						"top": 10,
						"width": 30,
						"height": 20
					}
				},
				{
					"name": "folder_2_orange",
					"type": "Folder",
					"attributes": {},
					"children": [],
					"fixedPosition": {
						"left": 50,
						"top": 10,
						"width": 40,
						"height": 20
					}
				},
				{
					"name": "folder_3_blue",
					"type": "Folder",
					"attributes": {},
					"children": [],
					"fixedPosition": {
						"left": 10,
						"top": 40,
						"width": 20,
						"height": 50
					}
				},
				{
					"name": "folder_4_green",
					"type": "Folder",
					"attributes": {},
					"children": [],
					"fixedPosition": {
						"left": 40,
						"top": 40,
						"width": 50,
						"height": 20
					}
				},
				{
					"name": "folder_5_magenta",
					"type": "Folder",
					"attributes": {},
					"children": [],
					"fixedPosition": {
						"left": 40,
						"top": 70,
						"width": 50,
						"height": 20
					}
				}
			]
		}
	]
}

A margin between folders is recommended. To apply one, set the coordinates for the folder in the top-left corner to e.g., left: 10 and top: 10. The margin between the border of the map and folder_1 is therefore 10. It may be chosen at will. In order to define the coordinates of adjacent folders, apply any margin between folder_1 and folder_2. The example uses a margin of 10, so that the coordinates of folder_2 must be left: 50 and top: 10.

Define nested (parent-child) Fixed Folders

It is possible to fixate a folder and define its children to be fixed as well. All children of a parent Fixed Folder must be defined as fixed by adding the fixedPosition attribute in the .cc.json file. A fixed child will be positioned relatively to its parent.

{
	"projectName": "Sample Fix",
	"apiVersion": "1.2",
	"nodes": [
		{
			"name": "root",
			"type": "Folder",
			"attributes": {},
			"children": [
				{
					"name": "folder_1_red",
					"type": "Folder",
					"attributes": {},
					"children": [
						{
							"name": "folder_1.1_red",
							"type": "Folder",
							"attributes": {},
							"children": [
								{
									"name": "red_child_1.1.file",
									"type": "File",
									"attributes": {
										"rloc": 12.0
									}
								}
							],
							"fixedPosition": {
								"left": 10,
								"top": 10,
								"width": 80,
								"height": 50
							}
						},
						{
							"name": "folder_1.2_red",
							"type": "Folder",
							"attributes": {},
							"children": [
								{
									"name": "red_child_1.2.file",
									"type": "File",
									"attributes": {
										"rloc": 6.0
									}
								}
							],
							"fixedPosition": {
								"left": 80,
								"top": 70,
								"width": 10,
								"height": 10
							}
						}
					],
					"fixedPosition": {
						"left": 10,
						"top": 10,
						"width": 40,
						"height": 60
					}
				},
				{
					"name": "folder_2_orange",
					"type": "Folder",
					"attributes": {},
					"children": [
						{
							"name": "orange.file",
							"type": "File",
							"attributes": {
								"rloc": 10.0
							}
						}
					],
					"fixedPosition": {
						"left": 10,
						"top": 80,
						"width": 50,
						"height": 10
					}
				}
			]
		}
	]
}

Restrictions

The following rules apply in order to build a valid custom .cc.json:

• The values of left, top, width and height must be in range of `[0, 100]
• The value left + width or top + height must be in a range of [0, 100].
• Folders may not overlap.
• Leaving space between folders (for visibility reasons) is recommended.
• All children of the root folder require the fixedPosition attribute.