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add class for blinking text control code (\x1b[5m) to DOM renderer #5119

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add class for blinking text control code (\x1b[5m) to DOM renderer #5119

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f0dc67a
add class for blinking text control code (\x1b[5m) to DOM renderer
Jul 28, 2024
4572037
Merge branch 'text-blinker'
Jul 28, 2024
abe0640
Use main document to create viewport element
Tyriar Aug 5, 2024
c2aee5b
Merge pull request #5122 from Tyriar/tyriar/main_document
Tyriar Aug 5, 2024
dd54ef1
Update node-pty, use conpty.dll
Tyriar Aug 8, 2024
c6a50d5
Merge pull request #5124 from Tyriar/tyriar/node-pty
Tyriar Aug 8, 2024
4e97857
Merge branch 'text-blinker' into master
Aug 11, 2024
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5 changes: 5 additions & 0 deletions src/browser/renderer/dom/DomRendererRowFactory.ts
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Expand Up @@ -24,6 +24,7 @@ export const enum RowCss {
UNDERLINE_CLASS = 'xterm-underline',
OVERLINE_CLASS = 'xterm-overline',
STRIKETHROUGH_CLASS = 'xterm-strikethrough',
BLINK_CLASS = 'xterm-blink',
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We'd also want the associated CSS class for this in xterm.css if we went with a class

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We should also add an implementation on the webgl side for this so we're not merging in a partially complete feature. Probably the easiest way to implement this in such a way that would share the implementation across multiple renderers is to leverage the decorations service and have an interval to set the transparency of the decoration on and off periodically:

xterm.js/src/common/services/Services.ts

Lines 363 to 368 in cb3bd46

export interface IDecorationService extends IDisposable {
serviceBrand: undefined;
readonly decorations: IterableIterator<IInternalDecoration>;
readonly onDecorationRegistered: Event<IInternalDecoration>;
readonly onDecorationRemoved: Event<IInternalDecoration>;
registerDecoration(decorationOptions: IDecorationOptions): IDecoration | undefined;

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I'm not sure what the right default is for this, but regardless for accessibility reasons we will want to allow the embedder to disable blinking text. So I think we need some new option to drive this.

CURSOR_CLASS = 'xterm-cursor',
CURSOR_BLINK_CLASS = 'xterm-cursor-blink',
CURSOR_STYLE_BLOCK_CLASS = 'xterm-cursor-block',
Expand Down Expand Up @@ -300,6 +301,10 @@ export class DomRendererRowFactory {
classes.push(RowCss.STRIKETHROUGH_CLASS);
}

if (cell.isBlink()) {
classes.push(RowCss.BLINK_CLASS);
}

// apply link hover underline late, effectively overrides any previous text-decoration
// settings
if (isLinkHover) {
Expand Down