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| -rw-r--r-- | docs/architecture.md | 31 |
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diff --git a/docs/architecture.md b/docs/architecture.md index 17ef296d..40e01745 100644 --- a/docs/architecture.md +++ b/docs/architecture.md @@ -54,15 +54,40 @@ A `Document` ties together the `Rope`, `Selection`(s), `Syntax`, document file. A `View` represents an open split in the UI. It holds the currently open -document ID and other related state. +document ID and other related state. Views encapsulate the gutter, status line, +diagnostics, and the inner area where the code is displayed. > NOTE: Multiple views are able to display the same document, so the document > contains selections for each view. To retrieve, `document.selection()` takes > a `ViewId`. +`Info` is the autoinfo box that shows hints when awaiting another key with bindings +like `g` and `m`. It is attached to the viewport as a whole. + +`Surface` is like a buffer to which widgets draw themselves to, and the +surface is then rendered on the screen on each cycle. + +`Rect`s are areas (simply an x and y coordinate with the origin at the +screen top left and then a height and width) which are part of a +`Surface`. They can be used to limit the area to which a `Component` can +render. For example if we wrap a `Markdown` component in a `Popup` +(think the documentation popup with space+k), Markdown's render method +will get a Rect that is the exact size of the popup. + +Widgets are called `Component`s internally, and you can see most of them +in `helix-term/src/ui`. Some components like `Popup` and `Overlay` can take +other components as children. + +`Layer`s are how multiple components are displayed, and is simply a +`Vec<Component>`. Layers are managed by the `Compositor`. On each top +level render call, the compositor renders each component in the order +they were pushed into the stack. This makes multiple components "layer" +on top of one another. Hence we get a file picker displayed over the +editor, etc. + The `Editor` holds the global state: all the open documents, a tree -representation of all the view splits, and a registry of language servers. To -open or close files, interact with the editor. +representation of all the view splits, the configuration, and a registry of +language servers. To open or close files, interact with the editor. ## LSP |