Scanner wedge mode (#437)

* Add code_scan_listener package * Implement wedge controller widget * Update barcode settings widget - Allow user to choose which barcode scanner to use * Fix typo * Select barcode scanner widget based on user preference * Fix rendering issues for wedge controller * Update release notes * Add unit test for wedge scanner widget - Required some tweaks to other code * Use better library - https://github.com/fuadreza/flutter_barcode_listener - Fork of https://github.com/shaxxx/flutter_barcode_listener - Properly handles key "case" issues (shift, essentially) - Verified that it works correctly for multiple character types * Local copy of code, rather than relying on package which is not available on pub.dev * Fix unit test
2025-06-13 02:35:27 +00:00 · 2023-10-25 22:40:49 +11:00
parent b6ab9d5da5
commit c641cea369
12 changed files with 411 additions and 4 deletions
--- a/lib/barcode/wedge_controller.dart
+++ b/lib/barcode/wedge_controller.dart
@ -0,0 +1,102 @@
+
+import "package:flutter/material.dart";
+import "package:font_awesome_flutter/font_awesome_flutter.dart";
+
+import "package:inventree/app_colors.dart";
+import "package:inventree/barcode/controller.dart";
+import "package:inventree/barcode/handler.dart";
+import "package:inventree/barcode/flutter_barcode_listener.dart";
+import "package:inventree/l10.dart";
+import "package:inventree/helpers.dart";
+
+/*
+ * Barcode controller which acts as a keyboard wedge,
+ * intercepting barcode data which is entered as rapid keyboard presses
+ */
+class WedgeBarcodeController extends InvenTreeBarcodeController {
+
+  const WedgeBarcodeController(BarcodeHandler handler, {Key? key}) : super(handler, key: key);
+
+  @override
+  State<StatefulWidget> createState() => _WedgeBarcodeControllerState();
+
+}
+
+
+class _WedgeBarcodeControllerState extends InvenTreeBarcodeControllerState {
+
+  _WedgeBarcodeControllerState() : super();
+
+  bool canScan = true;
+
+  bool get scanning => mounted && canScan;
+
+  @override
+  Future<void> pauseScan() async {
+
+    if (mounted) {
+      setState(() {
+        canScan = false;
+      });
+    }
+  }
+
+  @override
+  Future<void> resumeScan() async {
+
+    if (mounted) {
+      setState(() {
+        canScan = true;
+      });
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(L10().scanBarcode),
+      ),
+      backgroundColor: Colors.black.withOpacity(0.9),
+      body: Center(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            Spacer(flex: 5),
+            FaIcon(FontAwesomeIcons.barcode, size: 64),
+            Spacer(flex: 5),
+            BarcodeKeyboardListener(
+              useKeyDownEvent: true,
+              child: SizedBox(
+                child: CircularProgressIndicator(
+                  color: scanning ? COLOR_ACTION : COLOR_PROGRESS
+                ),
+                width: 64,
+                height: 64,
+              ),
+              onBarcodeScanned: (String barcode) {
+                debug("scanned: ${barcode}");
+                if (scanning) {
+                  // Process the barcode data
+                  handleBarcodeData(barcode);
+                }
+              },
+            ),
+            Spacer(flex: 5),
+            Padding(
+              child: Text(
+                widget.handler.getOverlayText(context),
+                style: TextStyle(
+                  fontWeight: FontWeight.bold,
+                  color: Colors.white)
+              ),
+              padding: EdgeInsets.all(20),
+            )
+          ],
+        )
+      )
+    );
+  }
+
+}