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Background color of QR code image

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wanghongenpin
2024-11-27 01:57:57 +08:00
parent 6aacdfb4fc
commit b02e3e17c7
4 changed files with 21 additions and 10 deletions
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27
lib/ui/component/toolbox/qr_code_page.dart
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@@ -16,10 +16,12 @@
import 'dart:async';
import 'dart:io';
import 'dart:ui' as ui;
import 'package:desktop_multi_window/desktop_multi_window.dart';
import 'package:file_picker/file_picker.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/services.dart';
import 'package:flutter_gen/gen_l10n/app_localizations.dart';
import 'package:flutter_qr_reader/flutter_qr_reader.dart';
@@ -59,7 +61,7 @@ class _QrCodePageState extends State<QrCodePage> with SingleTickerProviderStateM
if (Platforms.isMobile()) {
tabController = TabController(initialIndex: 0, length: tabs.length, vsync: this);
}
if (Platforms.isDesktop() && widget.windowId != null) {
HardwareKeyboard.instance.addHandler(onKeyEvent);
}
@@ -244,6 +246,7 @@ class _QrEncodeState extends State<_QrEncode> with AutomaticKeepAliveClientMixin
var errorCorrectLevel = QrErrorCorrectLevel.M;
String? data;
TextEditingController inputData = TextEditingController();
final GlobalKey imageKey = GlobalKey();
AppLocalizations get localizations => AppLocalizations.of(context)!;
@@ -316,7 +319,14 @@ class _QrEncodeState extends State<_QrEncode> with AutomaticKeepAliveClientMixin
SizedBox(width: 20),
]),
SizedBox(height: 5),
Center(child: QrImageView(size: 300, data: inputData.text, errorCorrectionLevel: errorCorrectLevel)),
Center(
child: RepaintBoundary(
key: imageKey,
child: QrImageView(
size: 300,
data: inputData.text,
backgroundColor: Colors.white,
errorCorrectionLevel: errorCorrectLevel))),
],
),
SizedBox(height: 15),
@@ -331,6 +341,7 @@ class _QrEncodeState extends State<_QrEncode> with AutomaticKeepAliveClientMixin
if (Platforms.isMobile()) {
var imageBytes = await toImageBytes();
if (imageBytes == null) return;
String? path = await ImagePickers.saveByteDataImageToGallery(imageBytes);
if (path != null && mounted) {
FlutterToastr.show(localizations.saveSuccess, context, duration: 2, rootNavigator: true);
@@ -343,6 +354,8 @@ class _QrEncodeState extends State<_QrEncode> with AutomaticKeepAliveClientMixin
if (path == null) return;
var imageBytes = await toImageBytes();
if (imageBytes == null) return;
await File(path).writeAsBytes(imageBytes);
if (mounted) {
FlutterToastr.show(localizations.saveSuccess, context, duration: 2);
@@ -350,10 +363,10 @@ class _QrEncodeState extends State<_QrEncode> with AutomaticKeepAliveClientMixin
}
}
Future<Uint8List> toImageBytes() async {
QrPainter painter = QrPainter(data: data!, errorCorrectionLevel: errorCorrectLevel, version: QrVersions.auto);
var imageData = await painter.toImageData(300);
return imageData!.buffer.asUint8List();
Future<Uint8List?> toImageBytes() async {
RenderRepaintBoundary render = imageKey.currentContext!.findRenderObject() as RenderRepaintBoundary;
ui.Image image = await render.toImage();
ByteData? byteData = await image.toByteData(format: ui.ImageByteFormat.png);
return byteData?.buffer.asUint8List();
}
}