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Align ctx.createImageData and ctx.getImageData with the spec

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This commit is contained in:
Anthony Ramine 2018-10-06 11:41:48 +02:00
parent f13e35b2c5
commit 241dba064d
10 changed files with 54 additions and 81 deletions
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16
components/canvas/canvas_data.rs
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@ -11,7 +11,7 @@ use azure::azure_hl::SurfacePattern;
use canvas_traits::canvas::*;
use cssparser::RGBA;
use euclid::{Transform2D, Point2D, Vector2D, Rect, Size2D};
use ipc_channel::ipc::{IpcBytesSender, IpcSender};
use ipc_channel::ipc::IpcSender;
use num_traits::ToPrimitive;
use pixels;
use serde_bytes::ByteBuf;
@ -440,15 +440,6 @@ impl<'a> CanvasData<'a> {
chan.send(data).unwrap();
}
pub fn image_data(
&self,
dest_rect: Rect<i32>,
canvas_size: Size2D<f64>,
sender: IpcBytesSender,
) {
sender.send(&self.read_pixels(dest_rect, canvas_size)).unwrap();
}
// https://html.spec.whatwg.org/multipage/#dom-context-2d-putimagedata
pub fn put_image_data(
&mut self,
@ -526,9 +517,8 @@ impl<'a> CanvasData<'a> {
/// canvas_size: The size of the canvas we're reading from
/// read_rect: The area of the canvas we want to read from
#[allow(unsafe_code)]
pub fn read_pixels(&self, read_rect: Rect<i32>, canvas_size: Size2D<f64>) -> Vec<u8> {
let canvas_size = canvas_size.to_i32();
let canvas_rect = Rect::new(Point2D::new(0i32, 0i32), canvas_size);
pub fn read_pixels(&self, read_rect: Rect<i32>, canvas_size: Size2D<i32>) -> Vec<u8> {
let canvas_rect = Rect::from_size(canvas_size);
let src_read_rect = canvas_rect.intersection(&read_rect).unwrap_or(Rect::zero());
if src_read_rect.is_empty() || canvas_size.width <= 0 && canvas_size.height <= 0 {