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Support webgl strikethrough, fix underline position

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Fixes #580
This commit is contained in:
Daniel Imms
2021-07-09 07:39:19 -07:00
parent 96dd021ca4
commit bc702d28ff
1 changed files with 13 additions and 2 deletions
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addons/xterm-addon-webgl/src/atlas/WebglCharAtlas.ts
+13 -2
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@@ -339,6 +339,7 @@ export class WebglCharAtlas implements IDisposable {
const dim = !!this._workAttributeData.isDim();
const italic = !!this._workAttributeData.isItalic();
const underline = !!this._workAttributeData.isUnderline();
const strikethrough = !!this._workAttributeData.isStrikethrough();
let fgColor = this._workAttributeData.getFgColor();
let fgColorMode = this._workAttributeData.getFgColorMode();
let bgColor = this._workAttributeData.getBgColor();
@@ -393,9 +394,19 @@ export class WebglCharAtlas implements IDisposable {
this._tmpCtx.fillText(chars, padding, padding + this._config.scaledCharHeight);
if (underline) {
this._tmpCtx.strokeStyle = this._tmpCtx.fillStyle;
this._tmpCtx.moveTo(0, this._config.scaledCharHeight - 1);
this._tmpCtx.lineTo(this._config.scaledCharWidth, this._config.scaledCharHeight - 1);
this._tmpCtx.beginPath();
this._tmpCtx.moveTo(padding, padding + this._config.scaledCharHeight - 0.5);
this._tmpCtx.lineTo(padding + this._config.scaledCharWidth, padding + this._config.scaledCharHeight - 0.5);
this._tmpCtx.stroke();
this._tmpCtx.closePath();
}
if (strikethrough) {
this._tmpCtx.strokeStyle = this._tmpCtx.fillStyle;
this._tmpCtx.beginPath();
this._tmpCtx.moveTo(padding, padding + Math.floor(this._config.scaledCharHeight / 2) + 0.5);
this._tmpCtx.lineTo(padding + this._config.scaledCharWidth, padding + Math.floor(this._config.scaledCharHeight / 2) + 0.5);
this._tmpCtx.stroke();
this._tmpCtx.closePath();
}
this._tmpCtx.restore();