Download the PHP package codeagent/treemap without Composer
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Informations about the package treemap
Sometimes we need to convenient represent hierarchical data structures such as file system. One of the famous methods is a treemap. This php package provides you to build treemaps in formats of html, canvas and image from native php multiarrays. Special architecture of classes gives you an opportunity for customization at level of one node: node content, node color and other.
See demos.
More info about treemaps you may see in wiki.
Installation
Install the latest version via composer:
Also, it's necessary to plug in required css-styles to your page for correct display of html markup.
You can do that by copying treemap.css file to web-accessible folder of your
server. To do that, simply run vendor/bin/treemap command with target directory as argument. Then you need to include it into the head section of page via <link> tag,
for example <link rel="stylesheet" href="assets/treemap.css" />
Basic usage
Include composer’s autoloader and inject Treemap class from codeagent\treemap namespace into php script.
Map is waiting at the entrance your data as first argument, width and height as second and third arguments respectively.
To obtain the result of rendering (html markup, image), call render method of Presenter interface:
By default, Treemap class considers, that "weight" non-negative value are located in the value attribute and the
"children" nodes addressed via correspond children key of node.
If it is not suitable for you, you can tell treemap which keys to pick explicitly:
And then draw treemap using appropriate Presenter:
Not forget to inject presenter class to you script via use statement.
Advanced usage
Formats of representation
Of course, presentation of treemap does not limited only by html. Besides html there are classes for building images and canvas elements in this package.
ImagePresenter outputs image in form of raw data.
For this reason, pass appropriate content-type header with image data: header("Content-Type: image/png").
It is worth noting the NestedtmlPresenter. In fact, it is a collection of treemaps with different detalization degree,
which gives you conveniently navigate from one map to another via headers and breadcrumbs at top of presenter.
Custom node styles
Presenter interface gives an ability to adjust a single node rendering via a utility Nodeinfo class, for example:
NodeInfo api provides an access to node information:
- background() - sets/gets background color of node
- content() - access to content of node (NodeContent)
- rectangle() - access to geometry (rectangle) of node
- level() - depth of node (0 is root Node)
- isLeaf() - whether node is leaf
- isRoot() - whether node is root
- id() - order between node siblings
- visible() - whether node is visible/not
- data() - node data
License
MIT
