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script: Map HTMLCanvasElement width and height attributes.

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This commit is contained in:
Emilio Cobos Álvarez 2017-04-07 16:03:25 +02:00
parent df29d02026
commit 53cad6227e
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4 changed files with 63 additions and 3 deletions
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24
components/script/dom/htmlcanvaselement.rs
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@ -36,7 +36,7 @@ use js::jsapi::{HandleValue, JSContext};
use offscreen_gl_context::GLContextAttributes;
use script_layout_interface::HTMLCanvasData;
use std::iter::repeat;
use style::attr::AttrValue;
use style::attr::{AttrValue, LengthOrPercentageOrAuto};
const DEFAULT_WIDTH: u32 = 300;
const DEFAULT_HEIGHT: u32 = 150;
@ -97,6 +97,8 @@ impl HTMLCanvasElement {
pub trait LayoutHTMLCanvasElementHelpers {
fn data(&self) -> HTMLCanvasData;
fn get_width(&self) -> LengthOrPercentageOrAuto;
fn get_height(&self) -> LengthOrPercentageOrAuto;
}
impl LayoutHTMLCanvasElementHelpers for LayoutJS<HTMLCanvasElement> {
@ -124,6 +126,26 @@ impl LayoutHTMLCanvasElementHelpers for LayoutJS<HTMLCanvasElement> {
}
}
}
#[allow(unsafe_code)]
fn get_width(&self) -> LengthOrPercentageOrAuto {
unsafe {
(&*self.upcast::<Element>().unsafe_get())
.get_attr_for_layout(&ns!(), &local_name!("width"))
.map(AttrValue::as_uint_px_dimension)
.unwrap_or(LengthOrPercentageOrAuto::Auto)
}
}
#[allow(unsafe_code)]
fn get_height(&self) -> LengthOrPercentageOrAuto {
unsafe {
(&*self.upcast::<Element>().unsafe_get())
.get_attr_for_layout(&ns!(), &local_name!("height"))
.map(AttrValue::as_uint_px_dimension)
.unwrap_or(LengthOrPercentageOrAuto::Auto)
}
}
}