Implement stdweb backend for web platform
This commit is contained in:
Héctor Ramón Jiménez
parent
1596cc5d9e
commit
bb285984da
10 changed files with 355 additions and 906 deletions
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@ -11,10 +11,14 @@ mod event_loop;
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mod monitor;
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mod window;
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#[cfg(feature = "web_sys")]
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#[cfg(feature = "use_web-sys")]
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#[path = "web_sys/mod.rs"]
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mod backend;
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#[cfg(feature = "use_stdweb")]
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#[path = "stdweb/mod.rs"]
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mod backend;
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pub use self::device::Id as DeviceId;
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pub use self::error::OsError;
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pub use self::event_loop::{
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@ -1,12 +1,51 @@
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pub struct Canvas;
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use super::event;
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use crate::dpi::{LogicalPosition, LogicalSize};
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use crate::error::OsError as RootOE;
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use crate::event::{ModifiersState, MouseButton, MouseScrollDelta, ScanCode, VirtualKeyCode};
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use crate::platform_impl::OsError;
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use std::rc::Rc;
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use stdweb::traits::IPointerEvent;
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use stdweb::unstable::TryInto;
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use stdweb::web::event::{
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BlurEvent, ConcreteEvent, FocusEvent, KeyDownEvent, KeyPressEvent, KeyUpEvent, MouseWheelEvent,
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PointerDownEvent, PointerMoveEvent, PointerOutEvent, PointerOverEvent, PointerUpEvent,
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};
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use stdweb::web::html_element::CanvasElement;
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use stdweb::web::{
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document, window, EventListenerHandle, IChildNode, IElement, IEventTarget, IHtmlElement, INode,
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};
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pub struct Canvas {
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raw: CanvasElement,
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on_redraw: Rc<dyn Fn()>,
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on_focus: Option<EventListenerHandle>,
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on_blur: Option<EventListenerHandle>,
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on_keyboard_release: Option<EventListenerHandle>,
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on_keyboard_press: Option<EventListenerHandle>,
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on_received_character: Option<EventListenerHandle>,
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on_cursor_leave: Option<EventListenerHandle>,
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on_cursor_enter: Option<EventListenerHandle>,
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on_cursor_move: Option<EventListenerHandle>,
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on_mouse_press: Option<EventListenerHandle>,
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on_mouse_release: Option<EventListenerHandle>,
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on_mouse_wheel: Option<EventListenerHandle>,
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}
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impl Drop for Canvas {
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fn drop(&mut self) {
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self.raw.remove();
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}
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}
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impl Canvas {
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pub fn new() -> Self {
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let element = document()
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pub fn create<F>(on_redraw: F) -> Result<Self, RootOE>
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where
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F: 'static + Fn(),
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{
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let canvas: CanvasElement = document()
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.create_element("canvas")
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.map_err(|_| os_error!(OsError("Failed to create canvas element".to_owned())))?;
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let canvas: CanvasElement = element
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.map_err(|_| os_error!(OsError("Failed to create canvas element".to_owned())))?
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.try_into()
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.map_err(|_| os_error!(OsError("Failed to create canvas element".to_owned())))?;
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@ -15,6 +54,198 @@ impl Canvas {
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.ok_or_else(|| os_error!(OsError("Failed to find body node".to_owned())))?
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.append_child(&canvas);
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Canvas(canvas)
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// TODO: Set up unique ids
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canvas
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.set_attribute("tabindex", "0")
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.expect("Failed to set a tabindex");
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Ok(Canvas {
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raw: canvas,
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on_redraw: Rc::new(on_redraw),
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on_blur: None,
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on_focus: None,
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on_keyboard_release: None,
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on_keyboard_press: None,
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on_received_character: None,
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on_cursor_leave: None,
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on_cursor_enter: None,
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on_cursor_move: None,
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on_mouse_release: None,
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on_mouse_press: None,
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on_mouse_wheel: None,
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})
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}
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pub fn set_attribute(&self, attribute: &str, value: &str) {
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self.raw
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.set_attribute(attribute, value)
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.expect(&format!("Set attribute: {}", attribute));
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}
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pub fn position(&self) -> (f64, f64) {
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let bounds = self.raw.get_bounding_client_rect();
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(bounds.get_x(), bounds.get_y())
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}
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pub fn width(&self) -> f64 {
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self.raw.width() as f64
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}
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pub fn height(&self) -> f64 {
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self.raw.height() as f64
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}
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pub fn set_size(&self, size: LogicalSize) {
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self.raw.set_width(size.width as u32);
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self.raw.set_height(size.height as u32);
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}
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pub fn raw(&self) -> &CanvasElement {
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&self.raw
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}
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pub fn request_redraw(&self) {
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let on_redraw = self.on_redraw.clone();
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window().request_animation_frame(move |_| on_redraw());
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}
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pub fn on_blur<F>(&mut self, mut handler: F)
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where
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F: 'static + FnMut(),
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{
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self.on_blur = Some(self.add_event(move |_: BlurEvent| {
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handler();
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}));
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}
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pub fn on_focus<F>(&mut self, mut handler: F)
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where
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F: 'static + FnMut(),
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{
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self.on_focus = Some(self.add_event(move |_: FocusEvent| {
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handler();
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}));
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}
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pub fn on_keyboard_release<F>(&mut self, mut handler: F)
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where
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F: 'static + FnMut(ScanCode, Option<VirtualKeyCode>, ModifiersState),
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{
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self.on_keyboard_release = Some(self.add_event(move |event: KeyUpEvent| {
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handler(
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event::scan_code(&event),
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event::virtual_key_code(&event),
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event::keyboard_modifiers(&event),
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);
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}));
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}
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pub fn on_keyboard_press<F>(&mut self, mut handler: F)
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where
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F: 'static + FnMut(ScanCode, Option<VirtualKeyCode>, ModifiersState),
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{
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self.on_keyboard_press = Some(self.add_event(move |event: KeyDownEvent| {
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handler(
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event::scan_code(&event),
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event::virtual_key_code(&event),
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event::keyboard_modifiers(&event),
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);
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}));
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}
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pub fn on_received_character<F>(&mut self, mut handler: F)
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where
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F: 'static + FnMut(char),
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{
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// TODO: Use `beforeinput`.
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//
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// The `keypress` event is deprecated, but there does not seem to be a
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// viable/compatible alternative as of now. `beforeinput` is still widely
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// unsupported.
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self.on_received_character = Some(self.add_event(move |event: KeyPressEvent| {
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handler(event::codepoint(&event));
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}));
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}
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pub fn on_cursor_leave<F>(&mut self, mut handler: F)
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where
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F: 'static + FnMut(i32),
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{
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self.on_cursor_leave = Some(self.add_event(move |event: PointerOutEvent| {
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handler(event.pointer_id());
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}));
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}
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pub fn on_cursor_enter<F>(&mut self, mut handler: F)
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where
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F: 'static + FnMut(i32),
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{
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self.on_cursor_enter = Some(self.add_event(move |event: PointerOverEvent| {
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handler(event.pointer_id());
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}));
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}
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pub fn on_mouse_release<F>(&mut self, mut handler: F)
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where
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F: 'static + FnMut(i32, MouseButton, ModifiersState),
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{
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self.on_mouse_release = Some(self.add_event(move |event: PointerUpEvent| {
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handler(
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event.pointer_id(),
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event::mouse_button(&event),
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event::mouse_modifiers(&event),
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);
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}));
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}
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pub fn on_mouse_press<F>(&mut self, mut handler: F)
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where
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F: 'static + FnMut(i32, MouseButton, ModifiersState),
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{
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self.on_mouse_press = Some(self.add_event(move |event: PointerDownEvent| {
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handler(
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event.pointer_id(),
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event::mouse_button(&event),
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event::mouse_modifiers(&event),
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);
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}));
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}
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pub fn on_cursor_move<F>(&mut self, mut handler: F)
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where
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F: 'static + FnMut(i32, LogicalPosition, ModifiersState),
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{
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self.on_cursor_move = Some(self.add_event(move |event: PointerMoveEvent| {
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handler(
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event.pointer_id(),
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event::mouse_position(&event),
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event::mouse_modifiers(&event),
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);
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}));
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}
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pub fn on_mouse_wheel<F>(&mut self, mut handler: F)
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where
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F: 'static + FnMut(i32, MouseScrollDelta, ModifiersState),
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{
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self.on_mouse_wheel = Some(self.add_event(move |event: MouseWheelEvent| {
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if let Some(delta) = event::mouse_scroll_delta(&event) {
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handler(0, delta, event::mouse_modifiers(&event));
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}
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}));
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}
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fn add_event<E, F>(&self, mut handler: F) -> EventListenerHandle
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where
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E: ConcreteEvent,
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F: 'static + FnMut(E),
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{
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self.raw.add_event_listener(move |event: E| {
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event.stop_propagation();
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event.cancel_bubble();
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handler(event);
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})
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}
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}
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229
src/platform_impl/web/stdweb/event.rs
Normal file
229
src/platform_impl/web/stdweb/event.rs
Normal file
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@ -0,0 +1,229 @@
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use crate::dpi::LogicalPosition;
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use crate::event::{ModifiersState, MouseButton, MouseScrollDelta, ScanCode, VirtualKeyCode};
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use stdweb::web::event::{IKeyboardEvent, IMouseEvent, MouseWheelDeltaMode, MouseWheelEvent};
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use stdweb::{unstable::TryInto, JsSerialize};
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pub fn mouse_button(event: &impl IMouseEvent) -> MouseButton {
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match event.button() {
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stdweb::web::event::MouseButton::Left => MouseButton::Left,
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stdweb::web::event::MouseButton::Right => MouseButton::Right,
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stdweb::web::event::MouseButton::Wheel => MouseButton::Middle,
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stdweb::web::event::MouseButton::Button4 => MouseButton::Other(0),
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stdweb::web::event::MouseButton::Button5 => MouseButton::Other(1),
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}
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}
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pub fn mouse_modifiers(event: &impl IMouseEvent) -> ModifiersState {
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ModifiersState {
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shift: event.shift_key(),
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ctrl: event.ctrl_key(),
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alt: event.alt_key(),
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logo: event.meta_key(),
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}
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}
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pub fn mouse_position(event: &impl IMouseEvent) -> LogicalPosition {
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LogicalPosition {
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x: event.offset_x() as f64,
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y: event.offset_y() as f64,
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}
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}
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pub fn mouse_scroll_delta(event: &MouseWheelEvent) -> Option<MouseScrollDelta> {
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let x = event.delta_x();
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let y = event.delta_y();
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match event.delta_mode() {
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MouseWheelDeltaMode::Line => Some(MouseScrollDelta::LineDelta(x as f32, y as f32)),
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MouseWheelDeltaMode::Pixel => Some(MouseScrollDelta::PixelDelta(LogicalPosition { x, y })),
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MouseWheelDeltaMode::Page => None,
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}
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}
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pub fn scan_code<T: JsSerialize>(event: &T) -> ScanCode {
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let key_code = js! ( return @{event}.key_code; );
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key_code
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.try_into()
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.expect("The which value should be a number")
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}
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pub fn virtual_key_code(event: &impl IKeyboardEvent) -> Option<VirtualKeyCode> {
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Some(match &event.code()[..] {
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"Digit1" => VirtualKeyCode::Key1,
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"Digit2" => VirtualKeyCode::Key2,
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"Digit3" => VirtualKeyCode::Key3,
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"Digit4" => VirtualKeyCode::Key4,
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"Digit5" => VirtualKeyCode::Key5,
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"Digit6" => VirtualKeyCode::Key6,
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"Digit7" => VirtualKeyCode::Key7,
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"Digit8" => VirtualKeyCode::Key8,
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"Digit9" => VirtualKeyCode::Key9,
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"Digit0" => VirtualKeyCode::Key0,
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"KeyA" => VirtualKeyCode::A,
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"KeyB" => VirtualKeyCode::B,
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"KeyC" => VirtualKeyCode::C,
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"KeyD" => VirtualKeyCode::D,
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"KeyE" => VirtualKeyCode::E,
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"KeyF" => VirtualKeyCode::F,
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"KeyG" => VirtualKeyCode::G,
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"KeyH" => VirtualKeyCode::H,
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"KeyI" => VirtualKeyCode::I,
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"KeyJ" => VirtualKeyCode::J,
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"KeyK" => VirtualKeyCode::K,
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"KeyL" => VirtualKeyCode::L,
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"KeyM" => VirtualKeyCode::M,
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"KeyN" => VirtualKeyCode::N,
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"KeyO" => VirtualKeyCode::O,
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"KeyP" => VirtualKeyCode::P,
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"KeyQ" => VirtualKeyCode::Q,
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"KeyR" => VirtualKeyCode::R,
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"KeyS" => VirtualKeyCode::S,
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"KeyT" => VirtualKeyCode::T,
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"KeyU" => VirtualKeyCode::U,
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"KeyV" => VirtualKeyCode::V,
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"KeyW" => VirtualKeyCode::W,
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"KeyX" => VirtualKeyCode::X,
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"KeyY" => VirtualKeyCode::Y,
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"KeyZ" => VirtualKeyCode::Z,
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"Escape" => VirtualKeyCode::Escape,
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"F1" => VirtualKeyCode::F1,
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"F2" => VirtualKeyCode::F2,
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"F3" => VirtualKeyCode::F3,
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"F4" => VirtualKeyCode::F4,
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"F5" => VirtualKeyCode::F5,
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"F6" => VirtualKeyCode::F6,
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"F7" => VirtualKeyCode::F7,
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"F8" => VirtualKeyCode::F8,
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"F9" => VirtualKeyCode::F9,
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"F10" => VirtualKeyCode::F10,
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"F11" => VirtualKeyCode::F11,
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"F12" => VirtualKeyCode::F12,
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"F13" => VirtualKeyCode::F13,
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"F14" => VirtualKeyCode::F14,
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"F15" => VirtualKeyCode::F15,
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"F16" => VirtualKeyCode::F16,
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"F17" => VirtualKeyCode::F17,
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"F18" => VirtualKeyCode::F18,
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"F19" => VirtualKeyCode::F19,
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"F20" => VirtualKeyCode::F20,
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"F21" => VirtualKeyCode::F21,
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"F22" => VirtualKeyCode::F22,
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"F23" => VirtualKeyCode::F23,
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"F24" => VirtualKeyCode::F24,
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"PrintScreen" => VirtualKeyCode::Snapshot,
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"ScrollLock" => VirtualKeyCode::Scroll,
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"Pause" => VirtualKeyCode::Pause,
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"Insert" => VirtualKeyCode::Insert,
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"Home" => VirtualKeyCode::Home,
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"Delete" => VirtualKeyCode::Delete,
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"End" => VirtualKeyCode::End,
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"PageDown" => VirtualKeyCode::PageDown,
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"PageUp" => VirtualKeyCode::PageUp,
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"ArrowLeft" => VirtualKeyCode::Left,
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"ArrowUp" => VirtualKeyCode::Up,
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"ArrowRight" => VirtualKeyCode::Right,
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"ArrowDown" => VirtualKeyCode::Down,
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"Backspace" => VirtualKeyCode::Back,
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"Enter" => VirtualKeyCode::Return,
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"Space" => VirtualKeyCode::Space,
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"Compose" => VirtualKeyCode::Compose,
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"Caret" => VirtualKeyCode::Caret,
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"NumLock" => VirtualKeyCode::Numlock,
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"Numpad0" => VirtualKeyCode::Numpad0,
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"Numpad1" => VirtualKeyCode::Numpad1,
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"Numpad2" => VirtualKeyCode::Numpad2,
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"Numpad3" => VirtualKeyCode::Numpad3,
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"Numpad4" => VirtualKeyCode::Numpad4,
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"Numpad5" => VirtualKeyCode::Numpad5,
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"Numpad6" => VirtualKeyCode::Numpad6,
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"Numpad7" => VirtualKeyCode::Numpad7,
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"Numpad8" => VirtualKeyCode::Numpad8,
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"Numpad9" => VirtualKeyCode::Numpad9,
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"AbntC1" => VirtualKeyCode::AbntC1,
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"AbntC2" => VirtualKeyCode::AbntC2,
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"NumpadAdd" => VirtualKeyCode::Add,
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"Quote" => VirtualKeyCode::Apostrophe,
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"Apps" => VirtualKeyCode::Apps,
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"At" => VirtualKeyCode::At,
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"Ax" => VirtualKeyCode::Ax,
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"Backslash" => VirtualKeyCode::Backslash,
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"Calculator" => VirtualKeyCode::Calculator,
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"Capital" => VirtualKeyCode::Capital,
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"Semicolon" => VirtualKeyCode::Semicolon,
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"Comma" => VirtualKeyCode::Comma,
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"Convert" => VirtualKeyCode::Convert,
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"NumpadDecimal" => VirtualKeyCode::Decimal,
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"NumpadDivide" => VirtualKeyCode::Divide,
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"Equal" => VirtualKeyCode::Equals,
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"Backquote" => VirtualKeyCode::Grave,
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"Kana" => VirtualKeyCode::Kana,
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"Kanji" => VirtualKeyCode::Kanji,
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"AltLeft" => VirtualKeyCode::LAlt,
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"BracketLeft" => VirtualKeyCode::LBracket,
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"ControlLeft" => VirtualKeyCode::LControl,
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"ShiftLeft" => VirtualKeyCode::LShift,
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"MetaLeft" => VirtualKeyCode::LWin,
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"Mail" => VirtualKeyCode::Mail,
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"MediaSelect" => VirtualKeyCode::MediaSelect,
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"MediaStop" => VirtualKeyCode::MediaStop,
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"Minus" => VirtualKeyCode::Minus,
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"NumpadMultiply" => VirtualKeyCode::Multiply,
|
||||
"Mute" => VirtualKeyCode::Mute,
|
||||
"LaunchMyComputer" => VirtualKeyCode::MyComputer,
|
||||
"NavigateForward" => VirtualKeyCode::NavigateForward,
|
||||
"NavigateBackward" => VirtualKeyCode::NavigateBackward,
|
||||
"NextTrack" => VirtualKeyCode::NextTrack,
|
||||
"NoConvert" => VirtualKeyCode::NoConvert,
|
||||
"NumpadComma" => VirtualKeyCode::NumpadComma,
|
||||
"NumpadEnter" => VirtualKeyCode::NumpadEnter,
|
||||
"NumpadEquals" => VirtualKeyCode::NumpadEquals,
|
||||
"OEM102" => VirtualKeyCode::OEM102,
|
||||
"Period" => VirtualKeyCode::Period,
|
||||
"PlayPause" => VirtualKeyCode::PlayPause,
|
||||
"Power" => VirtualKeyCode::Power,
|
||||
"PrevTrack" => VirtualKeyCode::PrevTrack,
|
||||
"AltRight" => VirtualKeyCode::RAlt,
|
||||
"BracketRight" => VirtualKeyCode::RBracket,
|
||||
"ControlRight" => VirtualKeyCode::RControl,
|
||||
"ShiftRight" => VirtualKeyCode::RShift,
|
||||
"MetaRight" => VirtualKeyCode::RWin,
|
||||
"Slash" => VirtualKeyCode::Slash,
|
||||
"Sleep" => VirtualKeyCode::Sleep,
|
||||
"Stop" => VirtualKeyCode::Stop,
|
||||
"NumpadSubtract" => VirtualKeyCode::Subtract,
|
||||
"Sysrq" => VirtualKeyCode::Sysrq,
|
||||
"Tab" => VirtualKeyCode::Tab,
|
||||
"Underline" => VirtualKeyCode::Underline,
|
||||
"Unlabeled" => VirtualKeyCode::Unlabeled,
|
||||
"AudioVolumeDown" => VirtualKeyCode::VolumeDown,
|
||||
"AudioVolumeUp" => VirtualKeyCode::VolumeUp,
|
||||
"Wake" => VirtualKeyCode::Wake,
|
||||
"WebBack" => VirtualKeyCode::WebBack,
|
||||
"WebFavorites" => VirtualKeyCode::WebFavorites,
|
||||
"WebForward" => VirtualKeyCode::WebForward,
|
||||
"WebHome" => VirtualKeyCode::WebHome,
|
||||
"WebRefresh" => VirtualKeyCode::WebRefresh,
|
||||
"WebSearch" => VirtualKeyCode::WebSearch,
|
||||
"WebStop" => VirtualKeyCode::WebStop,
|
||||
"Yen" => VirtualKeyCode::Yen,
|
||||
_ => return None,
|
||||
})
|
||||
}
|
||||
|
||||
pub fn keyboard_modifiers(event: &impl IKeyboardEvent) -> ModifiersState {
|
||||
ModifiersState {
|
||||
shift: event.shift_key(),
|
||||
ctrl: event.ctrl_key(),
|
||||
alt: event.alt_key(),
|
||||
logo: event.meta_key(),
|
||||
}
|
||||
}
|
||||
|
||||
pub fn codepoint(event: &impl IKeyboardEvent) -> char {
|
||||
// `event.key()` always returns a non-empty `String`. Therefore, this should
|
||||
// never panic.
|
||||
// https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key
|
||||
event.key().chars().next().unwrap()
|
||||
}
|
||||
|
|
@ -1,6 +1,21 @@
|
|||
#[cfg(feature = "stdweb")]
|
||||
impl WindowExtStdweb for RootWindow {
|
||||
mod canvas;
|
||||
mod event;
|
||||
mod timeout;
|
||||
|
||||
pub use self::canvas::Canvas;
|
||||
pub use self::timeout::Timeout;
|
||||
|
||||
use crate::platform::web::WindowExtStdweb;
|
||||
use crate::window::Window;
|
||||
|
||||
use stdweb::web::html_element::CanvasElement;
|
||||
|
||||
pub fn throw(msg: &str) {
|
||||
js! { throw @{msg} }
|
||||
}
|
||||
|
||||
impl WindowExtStdweb for Window {
|
||||
fn canvas(&self) -> CanvasElement {
|
||||
self.window.canvas.clone()
|
||||
self.window.canvas().raw().clone()
|
||||
}
|
||||
}
|
||||
|
|
|
|||
25
src/platform_impl/web/stdweb/timeout.rs
Normal file
25
src/platform_impl/web/stdweb/timeout.rs
Normal file
|
|
@ -0,0 +1,25 @@
|
|||
use std::time::Duration;
|
||||
use stdweb::web::{window, IWindowOrWorker, TimeoutHandle};
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct Timeout {
|
||||
handle: TimeoutHandle,
|
||||
}
|
||||
|
||||
impl Timeout {
|
||||
pub fn new<F>(f: F, duration: Duration) -> Timeout
|
||||
where
|
||||
F: 'static + FnMut(),
|
||||
{
|
||||
Timeout {
|
||||
handle: window().set_clearable_timeout(f, duration.as_millis() as u32),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Drop for Timeout {
|
||||
fn drop(&mut self) {
|
||||
let handle = std::mem::replace(&mut self.handle, unsafe { std::mem::uninitialized() });
|
||||
handle.clear();
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue