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Temporary implementation of Canvas.MeasureText
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/* 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/. */ | ||
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use crate::dom::bindings::codegen::Bindings::TextMetricsBinding; | ||
use crate::dom::bindings::codegen::Bindings::TextMetricsBinding::TextMetricsMethods; | ||
use crate::dom::bindings::num::Finite; | ||
use crate::dom::bindings::reflector::{reflect_dom_object, Reflector}; | ||
use crate::dom::bindings::root::DomRoot; | ||
use crate::dom::globalscope::GlobalScope; | ||
use dom_struct::dom_struct; | ||
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#[dom_struct] | ||
pub struct TextMetrics { | ||
reflector_: Reflector, | ||
width: Finite<f64>, | ||
actualBoundingBoxLeft: Finite<f64>, | ||
actualBoundingBoxRight: Finite<f64>, | ||
fontBoundingBoxAscent: Finite<f64>, | ||
fontBoundingBoxDescent: Finite<f64>, | ||
actualBoundingBoxAscent: Finite<f64>, | ||
actualBoundingBoxDescent: Finite<f64>, | ||
emHeightAscent: Finite<f64>, | ||
emHeightDescent: Finite<f64>, | ||
hangingBaseline: Finite<f64>, | ||
alphabeticBaseline: Finite<f64>, | ||
ideographicBaseline: Finite<f64>, | ||
} | ||
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impl TextMetrics { | ||
fn new_inherited( | ||
width: f64, | ||
actualBoundingBoxLeft: f64, | ||
actualBoundingBoxRight: f64, | ||
fontBoundingBoxAscent: f64, | ||
fontBoundingBoxDescent: f64, | ||
actualBoundingBoxAscent: f64, | ||
actualBoundingBoxDescent: f64, | ||
emHeightAscent: f64, | ||
emHeightDescent: f64, | ||
hangingBaseline: f64, | ||
alphabeticBaseline: f64, | ||
ideographicBaseline: f64, | ||
) -> TextMetrics { | ||
TextMetrics { | ||
reflector_: Reflector::new(), | ||
width: Finite::wrap(width), | ||
actualBoundingBoxLeft: Finite::wrap(actualBoundingBoxLeft), | ||
actualBoundingBoxRight: Finite::wrap(actualBoundingBoxRight), | ||
fontBoundingBoxAscent: Finite::wrap(fontBoundingBoxAscent), | ||
fontBoundingBoxDescent: Finite::wrap(fontBoundingBoxDescent), | ||
actualBoundingBoxAscent: Finite::wrap(actualBoundingBoxAscent), | ||
actualBoundingBoxDescent: Finite::wrap(actualBoundingBoxDescent), | ||
emHeightAscent: Finite::wrap(emHeightAscent), | ||
emHeightDescent: Finite::wrap(emHeightDescent), | ||
hangingBaseline: Finite::wrap(hangingBaseline), | ||
alphabeticBaseline: Finite::wrap(alphabeticBaseline), | ||
ideographicBaseline: Finite::wrap(ideographicBaseline), | ||
} | ||
} | ||
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pub fn new( | ||
global: &GlobalScope, | ||
width: f64, | ||
actualBoundingBoxLeft: f64, | ||
actualBoundingBoxRight: f64, | ||
fontBoundingBoxAscent: f64, | ||
fontBoundingBoxDescent: f64, | ||
actualBoundingBoxAscent: f64, | ||
actualBoundingBoxDescent: f64, | ||
emHeightAscent: f64, | ||
emHeightDescent: f64, | ||
hangingBaseline: f64, | ||
alphabeticBaseline: f64, | ||
ideographicBaseline: f64, | ||
) -> DomRoot<TextMetrics> { | ||
reflect_dom_object( | ||
Box::new(TextMetrics::new_inherited( | ||
width, | ||
actualBoundingBoxLeft, | ||
actualBoundingBoxRight, | ||
fontBoundingBoxAscent, | ||
fontBoundingBoxDescent, | ||
actualBoundingBoxAscent, | ||
actualBoundingBoxDescent, | ||
emHeightAscent, | ||
emHeightDescent, | ||
hangingBaseline, | ||
alphabeticBaseline, | ||
ideographicBaseline, | ||
)), | ||
global, | ||
TextMetricsBinding::Wrap, | ||
) | ||
} | ||
} | ||
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impl TextMetricsMethods for TextMetrics { | ||
/// https://html.spec.whatwg.org/multipage/#dom-textmetrics-width | ||
fn Width(&self) -> Finite<f64> { | ||
self.width | ||
} | ||
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/// https://html.spec.whatwg.org/multipage/#dom-textmetrics-actualboundingboxleft | ||
fn ActualBoundingBoxLeft(&self) -> Finite<f64> { | ||
self.actualBoundingBoxLeft | ||
} | ||
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/// https://html.spec.whatwg.org/multipage/#dom-textmetrics-actualboundingboxright | ||
fn ActualBoundingBoxRight(&self) -> Finite<f64> { | ||
self.actualBoundingBoxRight | ||
} | ||
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/// https://html.spec.whatwg.org/multipage/#dom-textmetrics-fontboundingboxascent | ||
fn FontBoundingBoxAscent(&self) -> Finite<f64> { | ||
self.fontBoundingBoxAscent | ||
} | ||
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/// https://html.spec.whatwg.org/multipage/#dom-textmetrics-fontboundingboxascent | ||
fn FontBoundingBoxDescent(&self) -> Finite<f64> { | ||
self.fontBoundingBoxDescent | ||
} | ||
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/// https://html.spec.whatwg.org/multipage/#dom-textmetrics-actualboundingboxascent | ||
fn ActualBoundingBoxAscent(&self) -> Finite<f64> { | ||
self.actualBoundingBoxAscent | ||
} | ||
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/// https://html.spec.whatwg.org/multipage/#dom-textmetrics-actualboundingboxdescent | ||
fn ActualBoundingBoxDescent(&self) -> Finite<f64> { | ||
self.actualBoundingBoxDescent | ||
} | ||
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/// https://html.spec.whatwg.org/multipage/#dom-textmetrics-emheightascent | ||
fn EmHeightAscent(&self) -> Finite<f64> { | ||
self.emHeightAscent | ||
} | ||
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/// https://html.spec.whatwg.org/multipage/#dom-textmetrics-emheightdescent | ||
fn EmHeightDescent(&self) -> Finite<f64> { | ||
self.emHeightDescent | ||
} | ||
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/// https://html.spec.whatwg.org/multipage/#dom-textmetrics-hangingbaseline | ||
fn HangingBaseline(&self) -> Finite<f64> { | ||
self.hangingBaseline | ||
} | ||
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/// https://html.spec.whatwg.org/multipage/#dom-textmetrics-alphabeticbaseline | ||
fn AlphabeticBaseline(&self) -> Finite<f64> { | ||
self.alphabeticBaseline | ||
} | ||
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/// https://html.spec.whatwg.org/multipage/#dom-textmetrics-ideographicbaseline | ||
fn IdeographicBaseline(&self) -> Finite<f64> { | ||
self.ideographicBaseline | ||
} | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
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/* 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/. */ | ||
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// 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; | ||
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// 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; | ||
}; |
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