Implement Web backend

rust-windowing · Jun 3, 2023 · 81b103c · 81b103c
1 parent 4fd99d6
commit 81b103c
Showing 1 changed file with 42 additions and 1 deletion.
diff --git a/src/platform_impl/web/web_sys/event.rs b/src/platform_impl/web/web_sys/event.rs
@@ -6,7 +6,48 @@ use smol_str::SmolStr;
 use std::convert::TryInto;
 use web_sys::{HtmlCanvasElement, KeyboardEvent, MouseEvent, PointerEvent, WheelEvent};
 
-pub fn mouse_button(event: &MouseEvent) -> MouseButton {
+bitflags! {
+    #[derive(Debug, Clone, Copy, PartialEq, Eq)]
+    pub struct ButtonsState: u16 {
+        const LEFT   = 0b00001;
+        const RIGHT  = 0b00010;
+        const MIDDLE = 0b00100;
+        const BACK = 0b01000;
+        const FORWARD = 0b10000;
+    }
+}
+
+impl From<ButtonsState> for MouseButton {
+    fn from(value: ButtonsState) -> Self {
+        match value {
+            ButtonsState::LEFT => MouseButton::Left,
+            ButtonsState::RIGHT => MouseButton::Right,
+            ButtonsState::MIDDLE => MouseButton::Middle,
+            ButtonsState::BACK => MouseButton::Back,
+            ButtonsState::FORWARD => MouseButton::Forward,
+            _ => MouseButton::Other(value.bits()),
+        }
+    }
+}
+
+impl From<MouseButton> for ButtonsState {
+    fn from(value: MouseButton) -> Self {
+        match value {
+            MouseButton::Left => ButtonsState::LEFT,
+            MouseButton::Right => ButtonsState::RIGHT,
+            MouseButton::Middle => ButtonsState::MIDDLE,
+            MouseButton::Back => ButtonsState::BACK,
+            MouseButton::Forward => ButtonsState::FORWARD,
+            MouseButton::Other(value) => ButtonsState::from_bits_retain(value),
+        }
+    }
+}
+
+pub fn mouse_buttons(event: &MouseEvent) -> ButtonsState {
+    ButtonsState::from_bits_retain(event.buttons())
+}
+
+pub fn mouse_button(event: &MouseEvent) -> Option<MouseButton> {
     // https://www.w3.org/TR/uievents/#dom-mouseevent-button
     match event.button() {
         -1 => None,