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Make HTMLCanvasElement::fetch_all_data return a shared memory blob

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This commit is contained in:
Anthony Ramine 2018-11-21 12:51:49 +01:00
parent 804d964b7d
commit 9a8d03a0f3
5 changed files with 21 additions and 23 deletions
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7
components/script/dom/htmlcanvaselement.rs
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@ -36,6 +36,7 @@ use euclid::{Rect, Size2D};
use html5ever::{LocalName, Prefix};
use image::png::PNGEncoder;
use image::ColorType;
use ipc_channel::ipc::IpcSharedMemory;
use js::error::throw_type_error;
use js::jsapi::JSContext;
use js::rust::HandleValue;
@ -280,7 +281,7 @@ impl HTMLCanvasElement {
self.Height() != 0 && self.Width() != 0
}
pub fn fetch_all_data(&self) -> Option<(Vec<u8>, Size2D<u32>)> {
pub fn fetch_all_data(&self) -> Option<(Option<IpcSharedMemory>, Size2D<u32>)> {
let size = self.get_size();
if size.width == 0 || size.height == 0 {
@ -297,7 +298,7 @@ impl HTMLCanvasElement {
);
context.get_ipc_renderer().send(msg).unwrap();
receiver.recv().unwrap()?.into()
Some(receiver.recv().unwrap())
},
Some(&CanvasContext::WebGL(_)) => {
// TODO: add a method in WebGLRenderingContext to get the pixels.
@ -307,7 +308,7 @@ impl HTMLCanvasElement {
// TODO: add a method in WebGL2RenderingContext to get the pixels.
return None;
},
None => vec![0; size.height as usize * size.width as usize * 4],
None => None,
};
Some((data, size))