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Implement HTMLCanvasElement.toDataURL for WebGL canvas (fixes #19147)

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This commit is contained in:
Anthony Ramine 2018-03-23 16:26:02 +01:00
parent 4a6453ac9a
commit a77d35b60c
186 changed files with 63 additions and 1543 deletions
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13
components/script/dom/htmlcanvaselement.rs
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@ -345,11 +345,22 @@ impl HTMLCanvasElementMethods for HTMLCanvasElement {
Finite::wrap(self.Height() as f64))?;
image_data.get_data_array()
}
Some(CanvasContext::WebGL(ref context)) => {
match context.get_image_data(self.Width(), self.Height()) {
Some(data) => data,
None => return Ok("data:,".into()),
}
}
Some(CanvasContext::WebGL2(ref context)) => {
match context.base_context().get_image_data(self.Width(), self.Height()) {
Some(data) => data,
None => return Ok("data:,".into()),
}
}
None => {
// Each pixel is fully-transparent black.
vec![0; (self.Width() * self.Height() * 4) as usize]
}
_ => return Err(Error::NotSupported) // WebGL
};
// Only handle image/png for now.