mirror of
https://github.com/servo/servo.git
synced 2025-08-03 04:30:10 +01:00
Let (Offscreen)RenderingContext implement CanvasContext (#36712)
this allows us to simplify canvas element/offscreen impl to only call CanvasContext implementations (no more match statements). This will help with impl more offscreen canvas contextl. Testing: WPT and rustc Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>
This commit is contained in:
sagudev
GitHub
parent
772f0b2df9
commit
c3fcefdc32
5 changed files with 258 additions and 123 deletions
|
|
@ -27,14 +27,13 @@ use servo_media::streams::registry::MediaStreamId;
|
|||
use snapshot::Snapshot;
|
||||
use style::attr::AttrValue;
|
||||
|
||||
use crate::canvas_context::CanvasContext as _;
|
||||
pub(crate) use crate::canvas_context::*;
|
||||
use crate::conversions::Convert;
|
||||
use crate::dom::attr::Attr;
|
||||
use crate::dom::bindings::callback::ExceptionHandling;
|
||||
use crate::dom::bindings::cell::{DomRefCell, Ref, ref_filter_map};
|
||||
use crate::dom::bindings::codegen::Bindings::HTMLCanvasElementBinding::{
|
||||
BlobCallback, HTMLCanvasElementMethods, RenderingContext,
|
||||
BlobCallback, HTMLCanvasElementMethods, RenderingContext as RootedRenderingContext,
|
||||
};
|
||||
use crate::dom::bindings::codegen::Bindings::MediaStreamBinding::MediaStreamMethods;
|
||||
use crate::dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLContextAttributes;
|
||||
|
|
@ -104,21 +103,10 @@ impl EncodedImageType {
|
|||
}
|
||||
}
|
||||
|
||||
#[cfg_attr(crown, crown::unrooted_must_root_lint::must_root)]
|
||||
#[derive(Clone, JSTraceable, MallocSizeOf)]
|
||||
pub(crate) enum CanvasContext {
|
||||
Placeholder(Dom<OffscreenCanvas>),
|
||||
Context2d(Dom<CanvasRenderingContext2D>),
|
||||
WebGL(Dom<WebGLRenderingContext>),
|
||||
WebGL2(Dom<WebGL2RenderingContext>),
|
||||
#[cfg(feature = "webgpu")]
|
||||
WebGPU(Dom<GPUCanvasContext>),
|
||||
}
|
||||
|
||||
#[dom_struct]
|
||||
pub(crate) struct HTMLCanvasElement {
|
||||
htmlelement: HTMLElement,
|
||||
context: DomRefCell<Option<CanvasContext>>,
|
||||
context: DomRefCell<Option<RenderingContext>>,
|
||||
// This id and hashmap are used to keep track of ongoing toBlob() calls.
|
||||
callback_id: Cell<u32>,
|
||||
#[ignore_malloc_size_of = "not implemented for webidl callbacks"]
|
||||
|
|
@ -159,14 +147,7 @@ impl HTMLCanvasElement {
|
|||
|
||||
fn recreate_contexts_after_resize(&self) {
|
||||
if let Some(ref context) = *self.context.borrow() {
|
||||
match *context {
|
||||
CanvasContext::Context2d(ref context) => context.resize(),
|
||||
CanvasContext::WebGL(ref context) => context.resize(),
|
||||
CanvasContext::WebGL2(ref context) => context.resize(),
|
||||
#[cfg(feature = "webgpu")]
|
||||
CanvasContext::WebGPU(ref context) => context.resize(),
|
||||
CanvasContext::Placeholder(ref context) => context.resize(self.get_size().cast()),
|
||||
}
|
||||
context.resize()
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -176,23 +157,14 @@ impl HTMLCanvasElement {
|
|||
|
||||
pub(crate) fn origin_is_clean(&self) -> bool {
|
||||
match *self.context.borrow() {
|
||||
Some(CanvasContext::Context2d(ref context)) => context.origin_is_clean(),
|
||||
Some(ref context) => context.origin_is_clean(),
|
||||
_ => true,
|
||||
}
|
||||
}
|
||||
|
||||
pub(crate) fn mark_as_dirty(&self) {
|
||||
if let Some(ref context) = *self.context.borrow() {
|
||||
match *context {
|
||||
CanvasContext::Context2d(ref context) => context.mark_as_dirty(),
|
||||
CanvasContext::WebGL(ref context) => context.mark_as_dirty(),
|
||||
CanvasContext::WebGL2(ref context) => context.mark_as_dirty(),
|
||||
#[cfg(feature = "webgpu")]
|
||||
CanvasContext::WebGPU(ref context) => context.mark_as_dirty(),
|
||||
CanvasContext::Placeholder(ref _context) => {
|
||||
// TODO: Should this be marked as dirty?
|
||||
},
|
||||
}
|
||||
context.mark_as_dirty()
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -222,12 +194,14 @@ impl LayoutHTMLCanvasElementHelpers for LayoutDom<'_, HTMLCanvasElement> {
|
|||
fn data(self) -> HTMLCanvasData {
|
||||
let source = unsafe {
|
||||
match self.unsafe_get().context.borrow_for_layout().as_ref() {
|
||||
Some(CanvasContext::Context2d(context)) => context.to_layout().canvas_data_source(),
|
||||
Some(CanvasContext::WebGL(context)) => context.to_layout().canvas_data_source(),
|
||||
Some(CanvasContext::WebGL2(context)) => context.to_layout().canvas_data_source(),
|
||||
Some(RenderingContext::Context2d(context)) => {
|
||||
context.to_layout().canvas_data_source()
|
||||
},
|
||||
Some(RenderingContext::WebGL(context)) => context.to_layout().canvas_data_source(),
|
||||
Some(RenderingContext::WebGL2(context)) => context.to_layout().canvas_data_source(),
|
||||
#[cfg(feature = "webgpu")]
|
||||
Some(CanvasContext::WebGPU(context)) => context.to_layout().canvas_data_source(),
|
||||
Some(CanvasContext::Placeholder(_)) | None => HTMLCanvasDataSource::Empty,
|
||||
Some(RenderingContext::WebGPU(context)) => context.to_layout().canvas_data_source(),
|
||||
Some(RenderingContext::Placeholder(_)) | None => HTMLCanvasDataSource::Empty,
|
||||
}
|
||||
};
|
||||
|
||||
|
|
@ -246,14 +220,14 @@ impl LayoutHTMLCanvasElementHelpers for LayoutDom<'_, HTMLCanvasElement> {
|
|||
}
|
||||
|
||||
impl HTMLCanvasElement {
|
||||
pub(crate) fn context(&self) -> Option<Ref<CanvasContext>> {
|
||||
pub(crate) fn context(&self) -> Option<Ref<RenderingContext>> {
|
||||
ref_filter_map(self.context.borrow(), |ctx| ctx.as_ref())
|
||||
}
|
||||
|
||||
fn get_or_init_2d_context(&self, can_gc: CanGc) -> Option<DomRoot<CanvasRenderingContext2D>> {
|
||||
if let Some(ctx) = self.context() {
|
||||
return match *ctx {
|
||||
CanvasContext::Context2d(ref ctx) => Some(DomRoot::from_ref(ctx)),
|
||||
RenderingContext::Context2d(ref ctx) => Some(DomRoot::from_ref(ctx)),
|
||||
_ => None,
|
||||
};
|
||||
}
|
||||
|
|
@ -261,7 +235,7 @@ impl HTMLCanvasElement {
|
|||
let window = self.owner_window();
|
||||
let size = self.get_size();
|
||||
let context = CanvasRenderingContext2D::new(window.as_global_scope(), self, size, can_gc);
|
||||
*self.context.borrow_mut() = Some(CanvasContext::Context2d(Dom::from_ref(&*context)));
|
||||
*self.context.borrow_mut() = Some(RenderingContext::Context2d(Dom::from_ref(&*context)));
|
||||
Some(context)
|
||||
}
|
||||
|
||||
|
|
@ -273,7 +247,7 @@ impl HTMLCanvasElement {
|
|||
) -> Option<DomRoot<WebGLRenderingContext>> {
|
||||
if let Some(ctx) = self.context() {
|
||||
return match *ctx {
|
||||
CanvasContext::WebGL(ref ctx) => Some(DomRoot::from_ref(ctx)),
|
||||
RenderingContext::WebGL(ref ctx) => Some(DomRoot::from_ref(ctx)),
|
||||
_ => None,
|
||||
};
|
||||
}
|
||||
|
|
@ -289,7 +263,7 @@ impl HTMLCanvasElement {
|
|||
attrs,
|
||||
can_gc,
|
||||
)?;
|
||||
*self.context.borrow_mut() = Some(CanvasContext::WebGL(Dom::from_ref(&*context)));
|
||||
*self.context.borrow_mut() = Some(RenderingContext::WebGL(Dom::from_ref(&*context)));
|
||||
Some(context)
|
||||
}
|
||||
|
||||
|
|
@ -305,7 +279,7 @@ impl HTMLCanvasElement {
|
|||
}
|
||||
if let Some(ctx) = self.context() {
|
||||
return match *ctx {
|
||||
CanvasContext::WebGL2(ref ctx) => Some(DomRoot::from_ref(ctx)),
|
||||
RenderingContext::WebGL2(ref ctx) => Some(DomRoot::from_ref(ctx)),
|
||||
_ => None,
|
||||
};
|
||||
}
|
||||
|
|
@ -314,7 +288,7 @@ impl HTMLCanvasElement {
|
|||
let attrs = Self::get_gl_attributes(cx, options)?;
|
||||
let canvas = HTMLCanvasElementOrOffscreenCanvas::HTMLCanvasElement(DomRoot::from_ref(self));
|
||||
let context = WebGL2RenderingContext::new(&window, &canvas, size, attrs, can_gc)?;
|
||||
*self.context.borrow_mut() = Some(CanvasContext::WebGL2(Dom::from_ref(&*context)));
|
||||
*self.context.borrow_mut() = Some(RenderingContext::WebGL2(Dom::from_ref(&*context)));
|
||||
Some(context)
|
||||
}
|
||||
|
||||
|
|
@ -327,7 +301,7 @@ impl HTMLCanvasElement {
|
|||
fn get_or_init_webgpu_context(&self, can_gc: CanGc) -> Option<DomRoot<GPUCanvasContext>> {
|
||||
if let Some(ctx) = self.context() {
|
||||
return match *ctx {
|
||||
CanvasContext::WebGPU(ref ctx) => Some(DomRoot::from_ref(ctx)),
|
||||
RenderingContext::WebGPU(ref ctx) => Some(DomRoot::from_ref(ctx)),
|
||||
_ => None,
|
||||
};
|
||||
}
|
||||
|
|
@ -341,7 +315,8 @@ impl HTMLCanvasElement {
|
|||
.expect("Failed to get WebGPU channel")
|
||||
.map(|channel| {
|
||||
let context = GPUCanvasContext::new(&global_scope, self, channel, can_gc);
|
||||
*self.context.borrow_mut() = Some(CanvasContext::WebGPU(Dom::from_ref(&*context)));
|
||||
*self.context.borrow_mut() =
|
||||
Some(RenderingContext::WebGPU(Dom::from_ref(&*context)));
|
||||
context
|
||||
})
|
||||
}
|
||||
|
|
@ -349,8 +324,8 @@ impl HTMLCanvasElement {
|
|||
/// Gets the base WebGLRenderingContext for WebGL or WebGL 2, if exists.
|
||||
pub(crate) fn get_base_webgl_context(&self) -> Option<DomRoot<WebGLRenderingContext>> {
|
||||
match *self.context.borrow() {
|
||||
Some(CanvasContext::WebGL(ref context)) => Some(DomRoot::from_ref(context)),
|
||||
Some(CanvasContext::WebGL2(ref context)) => Some(context.base_context()),
|
||||
Some(RenderingContext::WebGL(ref context)) => Some(DomRoot::from_ref(context)),
|
||||
Some(RenderingContext::WebGL2(ref context)) => Some(context.base_context()),
|
||||
_ => None,
|
||||
}
|
||||
}
|
||||
|
|
@ -378,12 +353,7 @@ impl HTMLCanvasElement {
|
|||
|
||||
pub(crate) fn get_image_data(&self) -> Option<Snapshot> {
|
||||
match self.context.borrow().as_ref() {
|
||||
Some(CanvasContext::Context2d(context)) => context.get_image_data(),
|
||||
Some(CanvasContext::WebGL(context)) => context.get_image_data(),
|
||||
Some(CanvasContext::WebGL2(context)) => context.get_image_data(),
|
||||
#[cfg(feature = "webgpu")]
|
||||
Some(CanvasContext::WebGPU(context)) => context.get_image_data(),
|
||||
Some(CanvasContext::Placeholder(context)) => context.get_image_data(),
|
||||
Some(context) => context.get_image_data(),
|
||||
None => {
|
||||
let size = self.get_size();
|
||||
if size.width == 0 || size.height == 0 {
|
||||
|
|
@ -466,7 +436,7 @@ impl HTMLCanvasElementMethods<crate::DomTypeHolder> for HTMLCanvasElement {
|
|||
// is set to placeholder, the user agent must throw an "InvalidStateError" DOMException and leave the
|
||||
// attribute's value unchanged.
|
||||
fn SetWidth(&self, value: u32, can_gc: CanGc) -> Fallible<()> {
|
||||
if let Some(CanvasContext::Placeholder(_)) = *self.context.borrow() {
|
||||
if let Some(RenderingContext::Placeholder(_)) = *self.context.borrow() {
|
||||
return Err(Error::InvalidState);
|
||||
}
|
||||
|
||||
|
|
@ -485,7 +455,7 @@ impl HTMLCanvasElementMethods<crate::DomTypeHolder> for HTMLCanvasElement {
|
|||
|
||||
// https://html.spec.whatwg.org/multipage/#dom-canvas-height
|
||||
fn SetHeight(&self, value: u32, can_gc: CanGc) -> Fallible<()> {
|
||||
if let Some(CanvasContext::Placeholder(_)) = *self.context.borrow() {
|
||||
if let Some(RenderingContext::Placeholder(_)) = *self.context.borrow() {
|
||||
return Err(Error::InvalidState);
|
||||
}
|
||||
|
||||
|
|
@ -506,26 +476,26 @@ impl HTMLCanvasElementMethods<crate::DomTypeHolder> for HTMLCanvasElement {
|
|||
id: DOMString,
|
||||
options: HandleValue,
|
||||
can_gc: CanGc,
|
||||
) -> Fallible<Option<RenderingContext>> {
|
||||
) -> Fallible<Option<RootedRenderingContext>> {
|
||||
// Always throw an InvalidState exception when the canvas is in Placeholder mode (See table in the spec).
|
||||
if let Some(CanvasContext::Placeholder(_)) = *self.context.borrow() {
|
||||
if let Some(RenderingContext::Placeholder(_)) = *self.context.borrow() {
|
||||
return Err(Error::InvalidState);
|
||||
}
|
||||
|
||||
Ok(match &*id {
|
||||
"2d" => self
|
||||
.get_or_init_2d_context(can_gc)
|
||||
.map(RenderingContext::CanvasRenderingContext2D),
|
||||
.map(RootedRenderingContext::CanvasRenderingContext2D),
|
||||
"webgl" | "experimental-webgl" => self
|
||||
.get_or_init_webgl_context(cx, options, can_gc)
|
||||
.map(RenderingContext::WebGLRenderingContext),
|
||||
.map(RootedRenderingContext::WebGLRenderingContext),
|
||||
"webgl2" | "experimental-webgl2" => self
|
||||
.get_or_init_webgl2_context(cx, options, can_gc)
|
||||
.map(RenderingContext::WebGL2RenderingContext),
|
||||
.map(RootedRenderingContext::WebGL2RenderingContext),
|
||||
#[cfg(feature = "webgpu")]
|
||||
"webgpu" => self
|
||||
.get_or_init_webgpu_context(can_gc)
|
||||
.map(RenderingContext::GPUCanvasContext),
|
||||
.map(RootedRenderingContext::GPUCanvasContext),
|
||||
_ => None,
|
||||
})
|
||||
}
|
||||
|
|
@ -672,7 +642,8 @@ impl HTMLCanvasElementMethods<crate::DomTypeHolder> for HTMLCanvasElement {
|
|||
can_gc,
|
||||
);
|
||||
// Step 4. Set this canvas element's context mode to placeholder.
|
||||
*self.context.borrow_mut() = Some(CanvasContext::Placeholder(offscreen_canvas.as_traced()));
|
||||
*self.context.borrow_mut() =
|
||||
Some(RenderingContext::Placeholder(offscreen_canvas.as_traced()));
|
||||
|
||||
// Step 5. Return offscreenCanvas.
|
||||
Ok(offscreen_canvas)
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue