Mirrors/servo
1
0
Fork 0
mirror of https://github.com/servo/servo.git synced 2025-08-05 21:50:18 +01:00
Code Issues Projects Releases Packages Wiki Activity

implemented CreateImageBitmap function for Canvas image source

Browse source
This commit is contained in:
JayalakshmiV 2020-04-20 08:18:33 -07:00 • committed by ramyananth96
parent 9dbc6554f0
commit ef6f99d8f5
78 changed files with 394 additions and 71 deletions
Download patch file Download diff file Expand all files Collapse all files

71
components/script/dom/globalscope.rs
View file

@ -5,6 +5,9 @@
use crate::dom::bindings::cell::DomRefCell;
use crate::dom::bindings::codegen::Bindings::BroadcastChannelBinding::BroadcastChannelMethods;
use crate::dom::bindings::codegen::Bindings::EventSourceBinding::EventSourceBinding::EventSourceMethods;
use crate::dom::bindings::codegen::Bindings::ImageBitmapBinding::{
ImageBitmapOptions, ImageBitmapSource,
};
use crate::dom::bindings::codegen::Bindings::PermissionStatusBinding::PermissionState;
use crate::dom::bindings::codegen::Bindings::VoidFunctionBinding::VoidFunction;
use crate::dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
@ -31,6 +34,7 @@ use crate::dom::eventtarget::EventTarget;
use crate::dom::file::File;
use crate::dom::htmlscriptelement::ScriptId;
use crate::dom::identityhub::Identities;
use crate::dom::imagebitmap::ImageBitmap;
use crate::dom::messageevent::MessageEvent;
use crate::dom::messageport::MessagePort;
use crate::dom::paintworkletglobalscope::PaintWorkletGlobalScope;
@ -41,7 +45,7 @@ use crate::dom::window::Window;
use crate::dom::workerglobalscope::WorkerGlobalScope;
use crate::dom::workletglobalscope::WorkletGlobalScope;
use crate::microtask::{Microtask, MicrotaskQueue, UserMicrotask};
use crate::realms::{enter_realm, InRealm};
use crate::realms::{enter_realm, AlreadyInRealm, InRealm};
use crate::script_module::ModuleTree;
use crate::script_runtime::{CommonScriptMsg, JSContext as SafeJSContext, ScriptChan, ScriptPort};
use crate::script_thread::{MainThreadScriptChan, ScriptThread};
@ -2227,6 +2231,71 @@ impl GlobalScope {
}))
}
pub fn create_image_bitmap(
&self,
image: ImageBitmapSource,
options: &ImageBitmapOptions,
) -> Rc<Promise> {
let in_realm_proof = AlreadyInRealm::assert(&self);
let p = Promise::new_in_current_realm(&self, InRealm::Already(&in_realm_proof));
if options.resizeWidth.map_or(false, |w| w == 0) {
p.reject_error(Error::InvalidState);
return p;
}
if options.resizeHeight.map_or(false, |w| w == 0) {
p.reject_error(Error::InvalidState);
return p;
}
let promise = match image {
ImageBitmapSource::HTMLCanvasElement(ref canvas) => {
// https://html.spec.whatwg.org/multipage/#check-the-usability-of-the-image-argument
if !canvas.is_valid() {
p.reject_error(Error::InvalidState);
return p;
}
if let Some((data, size)) = canvas.fetch_all_data() {
let data = data
.map(|data| data.to_vec())
.unwrap_or_else(|| vec![0; size.area() as usize * 4]);
let image_bitmap = ImageBitmap::new(&self, size.width, size.height).unwrap();
image_bitmap.set_bitmap_data(data);
image_bitmap.set_origin_clean(canvas.origin_is_clean());
p.resolve_native(&(image_bitmap));
}
p
},
ImageBitmapSource::OffscreenCanvas(ref canvas) => {
// https://html.spec.whatwg.org/multipage/#check-the-usability-of-the-image-argument
if !canvas.is_valid() {
p.reject_error(Error::InvalidState);
return p;
}
if let Some((data, size)) = canvas.fetch_all_data() {
let data = data
.map(|data| data.to_vec())
.unwrap_or_else(|| vec![0; size.area() as usize * 4]);
let image_bitmap = ImageBitmap::new(&self, size.width, size.height).unwrap();
image_bitmap.set_bitmap_data(data);
image_bitmap.set_origin_clean(canvas.origin_is_clean());
p.resolve_native(&(image_bitmap));
}
p
},
_ => {
p.reject_error(Error::NotSupported);
return p;
},
};
promise
}
pub fn fire_timer(&self, handle: TimerEventId) {
self.timers.fire_timer(handle, self);
}