Add full mouse support on windows (#11)

src/backend/consumer/windows.rs

@@ -3,7 +3,16 @@ use std::sync::mpsc::Receiver;
 use crate::event::{KeyboardEvent, PointerEvent};
 use winapi::{
     self,
-    um::winuser::{INPUT, INPUT_MOUSE, LPINPUT, MOUSEEVENTF_MOVE, MOUSEINPUT},
+    um::winuser::{INPUT, INPUT_MOUSE, LPINPUT, MOUSEEVENTF_MOVE, MOUSEINPUT,
+    MOUSEEVENTF_LEFTDOWN,
+    MOUSEEVENTF_RIGHTDOWN,
+    MOUSEEVENTF_MIDDLEDOWN,
+    MOUSEEVENTF_LEFTUP,
+    MOUSEEVENTF_RIGHTUP,
+    MOUSEEVENTF_MIDDLEUP,
+    MOUSEEVENTF_WHEEL,
+    MOUSEEVENTF_HWHEEL,
+    },
 };
 
 use crate::{
@@ -11,16 +20,7 @@ use crate::{
     event::Event,
 };
 
-fn rel_mouse(dx: i32, dy: i32) {
-    let mi = MOUSEINPUT {
-        dx,
-        dy,
-        mouseData: 0,
-        dwFlags: MOUSEEVENTF_MOVE,
-        time: 0,
-        dwExtraInfo: 0,
-    };
-
+fn send_mouse_input(mi: MOUSEINPUT) {
     unsafe {
         let mut input = INPUT {
             type_: INPUT_MOUSE,
@@ -35,6 +35,60 @@ fn rel_mouse(dx: i32, dy: i32) {
     }
 }
 
+fn rel_mouse(dx: i32, dy: i32) {
+    let mi = MOUSEINPUT {
+        dx,
+        dy,
+        mouseData: 0,
+        dwFlags: MOUSEEVENTF_MOVE,
+        time: 0,
+        dwExtraInfo: 0,
+    };
+    send_mouse_input(mi);
+}
+
+fn mouse_button(button: u32, state: u32) {
+    let dw_flags = match state {
+        0 => match button {
+            0x110 => MOUSEEVENTF_LEFTUP,
+            0x111 => MOUSEEVENTF_RIGHTUP,
+            0x112 => MOUSEEVENTF_MIDDLEUP,
+            _ => return
+        }
+        1 => match button {
+            0x110 => MOUSEEVENTF_LEFTDOWN,
+            0x111 => MOUSEEVENTF_RIGHTDOWN,
+            0x112 => MOUSEEVENTF_MIDDLEDOWN,
+            _ => return
+        }
+        _ => return
+    };
+    let mi = MOUSEINPUT {
+        dx: 0, dy: 0, // no movement
+        mouseData: 0,
+        dwFlags: dw_flags,
+        time: 0,
+        dwExtraInfo: 0,
+    };
+    send_mouse_input(mi);
+}
+
+fn scroll(axis: u8, value: f64) {
+    let event_type = match axis {
+        0 => MOUSEEVENTF_WHEEL,
+        1 => MOUSEEVENTF_HWHEEL,
+        _ => return
+    };
+    let mi = MOUSEINPUT {
+        dx: 0, dy: 0,
+        mouseData: (-value * 15.0) as i32 as u32,
+        dwFlags: event_type,
+        time: 0,
+        dwExtraInfo: 0,
+    };
+    send_mouse_input(mi);
+}
+
 pub fn run(event_rx: Receiver<(Event, ClientHandle)>, _clients: Vec<Client>) {
     loop {
         match event_rx.recv().expect("event receiver unavailable").0 {
@@ -46,8 +100,11 @@ pub fn run(event_rx: Receiver<(Event, ClientHandle)>, _clients: Vec<Client>) {
                 } => {
                     rel_mouse(relative_x as i32, relative_y as i32);
                 }
-                PointerEvent::Button { .. } => {}
-                PointerEvent::Axis { .. } => {}
+                PointerEvent::Button { time:_, button, state } => { mouse_button(button, state)}
+                PointerEvent::Axis { time:_, axis, value } => {
+                    println!("axis: {axis}, value: {value}");
+                    scroll(axis, value)
+                }
                 PointerEvent::Frame {} => {}
             },
             Event::Keyboard(keyboard_event) => match keyboard_event {