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Add canvas usability checks to drawImage()

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This commit is contained in:
pylbrecht 2020-02-03 21:48:41 +01:00
parent ed0973fb1c
commit 423b86e439
5 changed files with 14 additions and 13 deletions
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10
components/script/canvas_state.rs
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@ -382,9 +382,19 @@ impl CanvasState {
) -> ErrorResult {
let result = match image {
CanvasImageSource::HTMLCanvasElement(ref canvas) => {
// https://html.spec.whatwg.org/multipage/#check-the-usability-of-the-image-argument
if !canvas.is_valid() {
return Err(Error::InvalidState);
}
self.draw_html_canvas_element(&canvas, htmlcanvas, sx, sy, sw, sh, dx, dy, dw, dh)
},
CanvasImageSource::OffscreenCanvas(ref canvas) => {
// https://html.spec.whatwg.org/multipage/#check-the-usability-of-the-image-argument
if !canvas.is_valid() {
return Err(Error::InvalidState);
}
self.draw_offscreen_canvas(&canvas, htmlcanvas, sx, sy, sw, sh, dx, dy, dw, dh)
},
CanvasImageSource::HTMLImageElement(ref image) => {