From 8e6e18f41386183a5df5c12824b4a07c8f4c8cdb Mon Sep 17 00:00:00 2001
From: Neale Pickett <neale@woozle.org>
Date: Tue, 19 May 2020 08:21:33 -0600
Subject: [PATCH] Add gamepad support + Enter=straight

---
 static/index.html |  20 +++++++--
 static/vail.css   |  22 +++++++++
 static/vail.js    | 112 ++++++++++++++++++++++++++++++++--------------
 3 files changed, 117 insertions(+), 37 deletions(-)

diff --git a/static/index.html b/static/index.html
index e9f1cc8..7e68238 100644
--- a/static/index.html
+++ b/static/index.html
@@ -77,7 +77,13 @@
 									</tr>
 									<tr>
 										<td>
-											<kbd>c</kbd> or <kbd>,</kbd> or <kbd>⇧ Shift</kbd>
+											<kbd>c</kbd> 
+											<kbd>,</kbd> 
+											<kbd>Enter</kbd>
+											<kbd>⇧ Shift</kbd> 
+											<br>
+											<kbd class="gamepad a" title="Gamepad A">A</kbd> 
+											<kbd class="gamepad b" title="Gamepad B">B</kbd>
 										</td>
 									</tr>
 								</table>
@@ -98,12 +104,20 @@
 									</tr>
 									<tr>
 										<td>
-											<kbd>.</kbd> or <kbd>z</kbd>
+											<kbd>.</kbd>
+											<kbd>z</kbd>
+											<br>
+											<kbd class="gamepad x" title="Gamepad X">X</kbd> 
+											<kbd class="gamepad" title="Gamepad LB">LB</kbd>
 											<br>
 											right-click for Dah
 										</td>
 										<td>
-											<kbd>/</kbd> or <kbd>x</kbd>
+											<kbd>/</kbd>
+											<kbd>x</kbd>
+											<br>
+											<kbd class="gamepad y" title="Gamepad Y">Y</kbd>
+											<kbd class="gamepad" title="Gamepad RB">RB</kbd>
 										</td>
 									</tr>
 								</table>
diff --git a/static/vail.css b/static/vail.css
index ad7c39b..a3aad3b 100644
--- a/static/vail.css
+++ b/static/vail.css
@@ -55,6 +55,28 @@ kbd {
     border-radius: 3px;
     font-size: 9pt;
     padding: .1em .6em;
+    cursor: default;
+}
+
+.gamepad {
+	color: white;
+	font-weight: bold;
+	background-color: #444;
+	border-radius: 50%;
+	height: 10px;
+	width: 10px;
+}
+.gamepad.a {
+	color: #8f8;
+}
+.gamepad.b {
+	color: #f88;
+}
+.gamepad.x {
+	color: #88f;
+}
+.gamepad.y {
+	color: #ff8;
 }
 
 code {
diff --git a/static/vail.js b/static/vail.js
index fce7d99..5688ae1 100644
--- a/static/vail.js
+++ b/static/vail.js
@@ -262,8 +262,8 @@ class Vail {
 		}
 
 		// Listen for keystrokes
-		document.addEventListener("keydown", e => this.key(e))
-		document.addEventListener("keyup", e => this.key(e))
+		document.addEventListener("keydown", e => this.keyboard(e))
+		document.addEventListener("keyup", e => this.keyboard(e))
 
 		// Make helpers
 		this.iambic = new Iambic(() => this.beginTx(), () => this.endTx())
@@ -282,19 +282,9 @@ class Vail {
 			navigator.requestMIDIAccess()
 			.then(a => this.midiInit(a))
 		}
-	}
-	
-	maximize(e) {
-		let element = e.target
-		while (! element.classList.contains("mdl-card")) {
-			element = element.parentElement
-			if (! element) {
-				console.log("Maximize button: couldn't find parent card")
-				return
-			}
-		}
-		element.classList.toggle("maximized")
-		console.log(element)
+		
+		// Set up for gamepad input
+		window.addEventListener("gamepadconnected", e => this.gamepadConnected(e))
 	}
 	
 	openSocket() {
@@ -368,14 +358,9 @@ class Vail {
 				return
 		}			
 	}
-
+	
 	error(msg) {
-		let now = new Date()
-		let el = document.querySelector("#snackbar")
-		el.MaterialSnackbar.showSnackbar({
-			message: msg,
-			timeout: 2000
-		})
+		toast(msg)
 		this.buzzer.ErrorTone()
 	}
 
@@ -483,8 +468,16 @@ class Vail {
 			this.endTx()
 		}
 	}
+
+	iambicDit(begin) {
+		this.iambic.Key(begin, DIT)
+	}
+
+	iambicDah(begin) {
+		this.iambic.Key(begin, DAH)
+	}
 	
-	key(event) {
+	keyboard(event) {
 		if (event.repeat) {
 			// Ignore key repeats generated by the OS, we do this ourselves
 			return
@@ -494,19 +487,19 @@ class Vail {
 		
 		if ((event.code == "KeyZ") || (event.code == "Period")) {
 			event.preventDefault()
-			this.iambic.Key(begin, DIT)
+			this.iambicDit(begin)
 		}
 		if ((event.code == "KeyX") || (event.code == "Slash")) {
 			event.preventDefault()
-			this.iambic.Key(begin, DAH)
+			this.iambicDah(begin)
 		}
-		if ((event.code == "KeyC") || (event.code == "Comma") || (event.key == "Shift")) {
+		if ((event.code == "KeyC") || 
+				(event.code == "Comma") || 
+				(event.key == "Shift") || 
+				(event.key == "Enter") ||
+				(event.key == "NumpadEnter")) {
 			event.preventDefault()
-			if (begin) {
-				this.beginTx()
-			} else {
-				this.endTx()
-			}
+			this.straightKey(begin)
 		}
 	}
 
@@ -516,11 +509,11 @@ class Vail {
 		event.preventDefault()
 
 		if (event.target.id == "dah") {
-			this.iambic.Key(begin, DAH)
+			this.iambicDah(begin)
 		} else if ((event.target.id == "dit") && (event.button == 2)) {
-			this.iambic.Key(begin, DAH)
+			this.iambicDah(begin)
 		} else if (event.target.id == "dit") {
-			this.iambic.Key(begin, DIT)
+			this.iambigDit(begin)
 		} else if (event.target.id == "key") {
 			this.straightKey(begin)
 		} else if ((event.target.id == "ck") && begin) {
@@ -528,6 +521,42 @@ class Vail {
 		}
 	}
 
+
+	gamepadConnected(event) {
+		// Polling could be computationally expensive,
+		// especially on devices with a power budget, like phones.
+		// To be considerate, we only start polling if a gamepad appears.
+		if (! this.gamepadButtons) {
+			this.gamepadButtons = {}
+			this.gamepadPoll(event.timeStamp)
+		}
+	}
+	
+	gamepadPoll(timestamp) {
+		let currentButtons = {}
+		for (let gp of navigator.getGamepads()) {
+			if (gp == null) {
+				continue
+			}
+			currentButtons.key |= gp.buttons[0].pressed || gp.buttons[1].pressed
+			currentButtons.dit |= gp.buttons[2].pressed || gp.buttons[4].pressed
+			currentButtons.dah |= gp.buttons[3].pressed || gp.buttons[5].pressed
+		}
+
+		if (currentButtons.key != this.gamepadButtons.key) {
+			this.straightKey(currentButtons.key)
+		}
+		if (currentButtons.dit != this.gamepadButtons.dit) {
+			this.iambicDit(currentButtons.dit)
+		}
+		if (currentButtons.dah != this.gamepadButtons.dah) {
+			this.iambicDah(currentButtons.dah)
+		}
+		this.gamepadButtons = currentButtons
+
+		requestAnimationFrame(e => this.gamepadPoll(e))
+	}
+
 	/**
 	  * Send "CK" to server, and don't squelch the repeat
 	  */
@@ -545,6 +574,21 @@ class Vail {
 		this.wsSend(Date.now(), 0) // Get round-trip time
 		this.socket.send(JSON.stringify(msg))
 	}
+
+	maximize(e) {
+		let element = e.target
+		while (! element.classList.contains("mdl-card")) {
+			element = element.parentElement
+			if (! element) {
+				console.log("Maximize button: couldn't find parent card")
+				return
+			}
+		}
+		element.classList.toggle("maximized")
+		console.log(element)
+	}
+	
+
 }
 
 function vailInit() {