fix: clear full lcd strip on streamdeck+ when drawing first 'button' …

…to it #176

satellite/src/device-types/streamdeck.ts

@@ -52,6 +52,11 @@ export class StreamDeckWrapper implements WrappedDevice {
 
 	#companionSupportsScaling = false
 
+	/**
+	 * Whether the LCD has been written to outside the button bounds that needs clearing
+	 */
+	#fullLcdDirty = true
+
 	public get deviceId(): string {
 		return this.#deviceId
 	}
@@ -160,6 +165,14 @@ export class StreamDeckWrapper implements WrappedDevice {
 					return
 				}
 
+				// Clear the lcd segment if needed
+				if (this.#fullLcdDirty) {
+					if (abort.aborted) return
+
+					this.#fullLcdDirty = false
+					await this.#deck.clearLcdSegment(control.id)
+				}
+
 				const maxAttempts = 3
 				for (let attempts = 1; attempts <= maxAttempts; attempts++) {
 					try {
@@ -318,6 +331,9 @@ export class StreamDeckWrapper implements WrappedDevice {
 					.then(async (buffer) => {
 						if (signal.aborted) return
 
+						// Mark the screen as dirty, so the gaps get cleared when the first region draw happens
+						this.#fullLcdDirty = true
+
 						// still valid
 						await this.#deck.fillLcd(lcdStrip.id, buffer, {
 							format: 'rgba',