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canvas: Add initial support of ImageBitmapRenderingContext (#37998)

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Add support of the ImageBitmapRenderingContext as "bitmaprenderer"
canvas context mode to RenderingContext/OffscreenRenderingContext
https://html.spec.whatwg.org/multipage/#imagebitmaprenderingcontext

It is initial implementation with public interface API but without
any display presentation support for HTMLCanvasElement.

Testing: Improvements in the following tests:
-
html/canvas/element/manual/imagebitmap/createImageBitmap-origin.sub.html
- html/canvas/offscreen/manual/text/canvas.2d.offscreen*
-
html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.nocrash.html
- imagebitmap-renderingcontext/*

Signed-off-by: Andrei Volykhin <andrei.volykhin@gmail.com>
This commit is contained in:
Andrei Volykhin 2025-07-15 11:03:49 +03:00 • committed by GitHub
parent ccc902eb7a
commit c817d7b9ce
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GPG key ID: B5690EEEBB952194
20 changed files with 365 additions and 82 deletions
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48
components/script/canvas_state.rs
View file

@ -36,7 +36,7 @@ use style_traits::{CssWriter, ParsingMode};
use url::Url;
use webrender_api::ImageKey;
use crate::canvas_context::{OffscreenRenderingContext, RenderingContext};
use crate::canvas_context::{CanvasContext, OffscreenRenderingContext, RenderingContext};
use crate::dom::bindings::cell::DomRefCell;
use crate::dom::bindings::codegen::Bindings::CanvasRenderingContext2DBinding::{
CanvasDirection, CanvasFillRule, CanvasImageSource, CanvasLineCap, CanvasLineJoin,
@ -623,7 +623,10 @@ impl CanvasState {
dw: Option<f64>,
dh: Option<f64>,
) -> ErrorResult {
let canvas_size = canvas.get_size();
let canvas_size = canvas
.context()
.map_or_else(|| canvas.get_size(), |context| context.size());
let dw = dw.unwrap_or(canvas_size.width as f64);
let dh = dh.unwrap_or(canvas_size.height as f64);
let sw = sw.unwrap_or(canvas_size.width as f64);
@ -651,6 +654,18 @@ impl CanvasState {
smoothing_enabled,
));
},
OffscreenRenderingContext::BitmapRenderer(ref context) => {
let Some(snapshot) = context.get_image_data() else {
return Ok(());
};
self.send_canvas_2d_msg(Canvas2dMsg::DrawImage(
snapshot.as_ipc(),
dest_rect,
source_rect,
smoothing_enabled,
));
},
OffscreenRenderingContext::Detached => return Err(Error::InvalidState),
}
} else {
@ -679,7 +694,10 @@ impl CanvasState {
dw: Option<f64>,
dh: Option<f64>,
) -> ErrorResult {
let canvas_size = canvas.get_size();
let canvas_size = canvas
.context()
.map_or_else(|| canvas.get_size(), |context| context.size());
let dw = dw.unwrap_or(canvas_size.width as f64);
let dh = dh.unwrap_or(canvas_size.height as f64);
let sw = sw.unwrap_or(canvas_size.width as f64);
@ -707,6 +725,18 @@ impl CanvasState {
smoothing_enabled,
));
},
RenderingContext::BitmapRenderer(ref context) => {
let Some(snapshot) = context.get_image_data() else {
return Ok(());
};
self.send_canvas_2d_msg(Canvas2dMsg::DrawImage(
snapshot.as_ipc(),
dest_rect,
source_rect,
smoothing_enabled,
));
},
RenderingContext::Placeholder(ref context) => {
let Some(context) = context.context() else {
return Err(Error::InvalidState);
@ -720,6 +750,18 @@ impl CanvasState {
source_rect,
smoothing_enabled,
)),
OffscreenRenderingContext::BitmapRenderer(ref context) => {
let Some(snapshot) = context.get_image_data() else {
return Ok(());
};
self.send_canvas_2d_msg(Canvas2dMsg::DrawImage(
snapshot.as_ipc(),
dest_rect,
source_rect,
smoothing_enabled,
));
},
OffscreenRenderingContext::Detached => return Err(Error::InvalidState),
}
},