forked from mirrors/gecko-dev
8d63b807b3
The attributes are unused. Fixes #8699. Source-Repo: https://github.com/servo/servo Source-Revision: c0be03f2afbd7aa02620325cd25256c97c75e559
82 lines
2.6 KiB
Rust
82 lines
2.6 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
use dom::bindings::codegen::Bindings::ImageDataBinding;
|
|
use dom::bindings::codegen::Bindings::ImageDataBinding::ImageDataMethods;
|
|
use dom::bindings::global::GlobalRef;
|
|
use dom::bindings::js::Root;
|
|
use dom::bindings::reflector::{Reflector, reflect_dom_object};
|
|
use euclid::size::Size2D;
|
|
use js::jsapi::{Heap, JSContext, JSObject};
|
|
use js::jsapi::{JS_GetUint8ClampedArrayData, JS_NewUint8ClampedArray};
|
|
use libc::uint8_t;
|
|
use std::default::Default;
|
|
use std::ptr;
|
|
use std::slice;
|
|
use std::vec::Vec;
|
|
|
|
#[dom_struct]
|
|
pub struct ImageData {
|
|
reflector_: Reflector,
|
|
width: u32,
|
|
height: u32,
|
|
data: Heap<*mut JSObject>,
|
|
}
|
|
|
|
impl ImageData {
|
|
#[allow(unsafe_code)]
|
|
pub fn new(global: GlobalRef, width: u32, height: u32, data: Option<Vec<u8>>) -> Root<ImageData> {
|
|
let mut imagedata = box ImageData {
|
|
reflector_: Reflector::new(),
|
|
width: width,
|
|
height: height,
|
|
data: Heap::default(),
|
|
};
|
|
|
|
unsafe {
|
|
let cx = global.get_cx();
|
|
let js_object: *mut JSObject = JS_NewUint8ClampedArray(cx, width * height * 4);
|
|
|
|
if let Some(vec) = data {
|
|
let js_object_data: *mut uint8_t = JS_GetUint8ClampedArrayData(js_object, ptr::null());
|
|
ptr::copy_nonoverlapping(vec.as_ptr(), js_object_data, vec.len())
|
|
}
|
|
(*imagedata).data.set(js_object);
|
|
}
|
|
|
|
reflect_dom_object(imagedata,
|
|
global, ImageDataBinding::Wrap)
|
|
}
|
|
|
|
#[allow(unsafe_code)]
|
|
pub fn get_data_array(&self, global: &GlobalRef) -> Vec<u8> {
|
|
unsafe {
|
|
let cx = global.get_cx();
|
|
let data: *const uint8_t = JS_GetUint8ClampedArrayData(self.Data(cx), ptr::null()) as *const uint8_t;
|
|
let len = self.Width() * self.Height() * 4;
|
|
slice::from_raw_parts(data, len as usize).to_vec()
|
|
}
|
|
}
|
|
|
|
pub fn get_size(&self) -> Size2D<i32> {
|
|
Size2D::new(self.Width() as i32, self.Height() as i32)
|
|
}
|
|
}
|
|
|
|
impl ImageDataMethods for ImageData {
|
|
// https://html.spec.whatwg.org/multipage/#dom-imagedata-width
|
|
fn Width(&self) -> u32 {
|
|
self.width
|
|
}
|
|
|
|
// https://html.spec.whatwg.org/multipage/#dom-imagedata-height
|
|
fn Height(&self) -> u32 {
|
|
self.height
|
|
}
|
|
|
|
// https://html.spec.whatwg.org/multipage/#dom-imagedata-data
|
|
fn Data(&self, _: *mut JSContext) -> *mut JSObject {
|
|
self.data.get()
|
|
}
|
|
}
|