diff options
Diffstat (limited to 'components/script/dom/webidls')
| -rw-r--r-- | components/script/dom/webidls/CanvasRenderingContext2D.webidl | 3 | ||||
| -rw-r--r-- | components/script/dom/webidls/TextMetrics.webidl | 23 |
2 files changed, 25 insertions, 1 deletions
diff --git a/components/script/dom/webidls/CanvasRenderingContext2D.webidl b/components/script/dom/webidls/CanvasRenderingContext2D.webidl index 92e8b80d5ef..2da0372a9ba 100644 --- a/components/script/dom/webidls/CanvasRenderingContext2D.webidl +++ b/components/script/dom/webidls/CanvasRenderingContext2D.webidl @@ -153,7 +153,8 @@ interface CanvasText { optional unrestricted double maxWidth); //void strokeText(DOMString text, unrestricted double x, unrestricted double y, // optional unrestricted double maxWidth); - //TextMetrics measureText(DOMString text); + [Pref="dom.canvas-text.enabled"] + TextMetrics measureText(DOMString text); }; [Exposed=(PaintWorklet, Window, Worker), NoInterfaceObject] diff --git a/components/script/dom/webidls/TextMetrics.webidl b/components/script/dom/webidls/TextMetrics.webidl new file mode 100644 index 00000000000..f3d90450824 --- /dev/null +++ b/components/script/dom/webidls/TextMetrics.webidl @@ -0,0 +1,23 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at https://mozilla.org/MPL/2.0/. */ + +// https://html.spec.whatwg.org/multipage/#textmetrics +[Exposed=(PaintWorklet, Window, Worker), Pref="dom.canvas-text.enabled"] +interface TextMetrics { + // x-direction + readonly attribute double width; // advance width + readonly attribute double actualBoundingBoxLeft; + readonly attribute double actualBoundingBoxRight; + + // y-direction + readonly attribute double fontBoundingBoxAscent; + readonly attribute double fontBoundingBoxDescent; + readonly attribute double actualBoundingBoxAscent; + readonly attribute double actualBoundingBoxDescent; + readonly attribute double emHeightAscent; + readonly attribute double emHeightDescent; + readonly attribute double hangingBaseline; + readonly attribute double alphabeticBaseline; + readonly attribute double ideographicBaseline; +}; |