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Fix createImageData with sizes < 1 pixel

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This commit is contained in:
David Zbarsky 2015-08-04 15:45:38 -04:00
parent 0565df8596
commit 2fb5fda5d0
2 changed files with 4 additions and 6 deletions
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5
components/script/dom/canvasrenderingcontext2d.rs
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@ -42,6 +42,7 @@ use num::{Float, ToPrimitive};
use std::borrow::ToOwned;
use std::cell::RefCell;
use std::fmt;
use std::cmp;
use std::sync::mpsc::channel;
use util::str::DOMString;
@ -954,7 +955,9 @@ impl<'a> CanvasRenderingContext2DMethods for &'a CanvasRenderingContext2D {
return Err(IndexSize)
}
Ok(ImageData::new(self.global.root().r(), sw.abs().to_u32().unwrap(), sh.abs().to_u32().unwrap(), None))
let sw = cmp::max(1, sw.abs().to_u32().unwrap());
let sh = cmp::max(1, sh.abs().to_u32().unwrap());
Ok(ImageData::new(self.global.root().r(), sw, sh, None))
}
// https://html.spec.whatwg.org/multipage/#dom-context-2d-createimagedata