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23 lines
993 B
Text
23 lines
993 B
Text
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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// https://html.spec.whatwg.org/multipage/#textmetrics
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[Exposed=(PaintWorklet, Window, Worker), Pref="dom.canvas-text.enabled"]
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interface TextMetrics {
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// x-direction
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readonly attribute double width; // advance width
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readonly attribute double actualBoundingBoxLeft;
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readonly attribute double actualBoundingBoxRight;
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// y-direction
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readonly attribute double fontBoundingBoxAscent;
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readonly attribute double fontBoundingBoxDescent;
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readonly attribute double actualBoundingBoxAscent;
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readonly attribute double actualBoundingBoxDescent;
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readonly attribute double emHeightAscent;
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readonly attribute double emHeightDescent;
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readonly attribute double hangingBaseline;
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readonly attribute double alphabeticBaseline;
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readonly attribute double ideographicBaseline;
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};
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