Mirrors/servo
1
0
Fork 0
mirror of https://github.com/servo/servo.git synced 2025-08-06 14:10:11 +01:00
Code Issues Projects Releases Packages Wiki Activity

Avoid ctx.getImageData in canvas.toDataURL

Browse source
This commit is contained in:
Anthony Ramine 2018-10-08 12:19:10 +02:00
parent 77c28bdfc9
commit 551c405b0f
2 changed files with 29 additions and 22 deletions
Download patch file Download diff file Expand all files Collapse all files

16
components/script/dom/htmlcanvaselement.rs
View file

@ -7,7 +7,6 @@ use canvas_traits::canvas::{CanvasMsg, CanvasId, FromScriptMsg};
use canvas_traits::webgl::WebGLVersion;
use dom::attr::Attr;
use dom::bindings::cell::DomRefCell;
use dom::bindings::codegen::Bindings::CanvasRenderingContext2DBinding::CanvasRenderingContext2DMethods;
use dom::bindings::codegen::Bindings::HTMLCanvasElementBinding;
use dom::bindings::codegen::Bindings::HTMLCanvasElementBinding::{HTMLCanvasElementMethods, RenderingContext};
use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLContextAttributes;
@ -27,7 +26,7 @@ use dom::virtualmethods::VirtualMethods;
use dom::webgl2renderingcontext::WebGL2RenderingContext;
use dom::webglrenderingcontext::{LayoutCanvasWebGLRenderingContextHelpers, WebGLRenderingContext};
use dom_struct::dom_struct;
use euclid::Size2D;
use euclid::{Rect, Size2D};
use html5ever::{LocalName, Prefix};
use image::ColorType;
use image::png::PNGEncoder;
@ -354,10 +353,8 @@ impl HTMLCanvasElementMethods for HTMLCanvasElement {
_quality: HandleValue,
) -> Fallible<USVString> {
// Step 1.
if let Some(CanvasContext::Context2d(ref context)) = *self.context.borrow() {
if !context.origin_is_clean() {
return Err(Error::Security);
}
if !self.origin_is_clean() {
return Err(Error::Security);
}
// Step 2.
@ -366,10 +363,9 @@ impl HTMLCanvasElementMethods for HTMLCanvasElement {
}
// Step 3.
let raw_data = match *self.context.borrow() {
let file = match *self.context.borrow() {
Some(CanvasContext::Context2d(ref context)) => {
// FIXME(nox): This shouldn't go through ImageData etc.
context.GetImageData(0, 0, self.Width() as i32, self.Height() as i32)?.to_vec()
context.get_rect(Rect::from_size(self.get_size()))
},
Some(CanvasContext::WebGL(ref context)) => {
match context.get_image_data(self.Width(), self.Height()) {
@ -392,7 +388,7 @@ impl HTMLCanvasElementMethods for HTMLCanvasElement {
// FIXME: Only handle image/png for now.
let mut png = Vec::new();
PNGEncoder::new(&mut png)
.encode(&raw_data, self.Width(), self.Height(), ColorType::RGBA(8))
.encode(&file, self.Width(), self.Height(), ColorType::RGBA(8))
.unwrap();
let mut url = "data:image/png;base64,".to_owned();
// FIXME(nox): Should this use base64::URL_SAFE?