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mv overlay.dart
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csf
271
flutter/lib/common/widgets/overlay.dart
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271
flutter/lib/common/widgets/overlay.dart
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import 'package:flutter/material.dart';
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import 'package:flutter_hbb/common.dart';
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import '../../mobile/pages/chat_page.dart';
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import '../../models/chat_model.dart';
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class DraggableChatWindow extends StatelessWidget {
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DraggableChatWindow(
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{this.position = Offset.zero,
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required this.width,
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required this.height,
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required this.chatModel});
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final Offset position;
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final double width;
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final double height;
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final ChatModel chatModel;
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@override
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Widget build(BuildContext context) {
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return Draggable(
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checkKeyboard: true,
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position: position,
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width: width,
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height: height,
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builder: (_, onPanUpdate) {
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return isIOS
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? ChatPage(chatModel: chatModel)
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: Scaffold(
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resizeToAvoidBottomInset: false,
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appBar: CustomAppBar(
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onPanUpdate: onPanUpdate,
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appBar: Container(
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color: MyTheme.accent50,
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height: 50,
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child: Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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Padding(
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padding: EdgeInsets.symmetric(horizontal: 15),
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child: Text(
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translate("Chat"),
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style: TextStyle(
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color: Colors.white,
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fontFamily: 'WorkSans',
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fontWeight: FontWeight.bold,
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fontSize: 20),
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)),
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Row(
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crossAxisAlignment: CrossAxisAlignment.center,
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children: [
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IconButton(
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onPressed: () {
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chatModel.hideChatWindowOverlay();
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},
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icon: Icon(Icons.keyboard_arrow_down)),
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IconButton(
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onPressed: () {
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chatModel.hideChatWindowOverlay();
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chatModel.hideChatIconOverlay();
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},
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icon: Icon(Icons.close))
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],
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)
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],
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),
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),
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),
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body: ChatPage(chatModel: chatModel),
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);
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});
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}
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}
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class CustomAppBar extends StatelessWidget implements PreferredSizeWidget {
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final GestureDragUpdateCallback onPanUpdate;
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final Widget appBar;
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const CustomAppBar(
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{Key? key, required this.onPanUpdate, required this.appBar})
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: super(key: key);
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@override
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Widget build(BuildContext context) {
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return GestureDetector(onPanUpdate: onPanUpdate, child: appBar);
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}
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@override
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Size get preferredSize => new Size.fromHeight(kToolbarHeight);
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}
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/// floating buttons of back/home/recent actions for android
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class DraggableMobileActions extends StatelessWidget {
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DraggableMobileActions(
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{this.position = Offset.zero,
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this.onBackPressed,
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this.onRecentPressed,
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this.onHomePressed,
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this.onHidePressed,
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required this.width,
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required this.height});
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final Offset position;
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final double width;
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final double height;
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final VoidCallback? onBackPressed;
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final VoidCallback? onHomePressed;
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final VoidCallback? onRecentPressed;
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final VoidCallback? onHidePressed;
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@override
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Widget build(BuildContext context) {
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return Draggable(
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position: position,
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width: width,
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height: height,
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builder: (_, onPanUpdate) {
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return GestureDetector(
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onPanUpdate: onPanUpdate,
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child: Card(
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color: Colors.transparent,
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shadowColor: Colors.transparent,
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child: Container(
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decoration: BoxDecoration(
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color: MyTheme.accent.withOpacity(0.4),
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borderRadius: BorderRadius.all(Radius.circular(15))),
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child: Row(
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mainAxisAlignment: MainAxisAlignment.spaceAround,
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children: [
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IconButton(
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color: MyTheme.white,
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onPressed: onBackPressed,
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splashRadius: 20,
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icon: const Icon(Icons.arrow_back)),
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IconButton(
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color: MyTheme.white,
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onPressed: onHomePressed,
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splashRadius: 20,
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icon: const Icon(Icons.home)),
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IconButton(
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color: MyTheme.white,
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onPressed: onRecentPressed,
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splashRadius: 20,
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icon: const Icon(Icons.more_horiz)),
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const VerticalDivider(
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width: 0,
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thickness: 2,
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indent: 10,
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endIndent: 10,
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),
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IconButton(
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color: MyTheme.white,
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onPressed: onHidePressed,
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splashRadius: 20,
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icon: const Icon(Icons.keyboard_arrow_down)),
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],
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),
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)));
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});
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}
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}
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class Draggable extends StatefulWidget {
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Draggable(
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{this.checkKeyboard = false,
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this.checkScreenSize = false,
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this.position = Offset.zero,
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required this.width,
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required this.height,
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required this.builder});
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final bool checkKeyboard;
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final bool checkScreenSize;
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final Offset position;
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final double width;
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final double height;
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final Widget Function(BuildContext, GestureDragUpdateCallback) builder;
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@override
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State<StatefulWidget> createState() => _DraggableState();
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}
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class _DraggableState extends State<Draggable> {
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late Offset _position;
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bool _keyboardVisible = false;
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double _saveHeight = 0;
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double _lastBottomHeight = 0;
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@override
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void initState() {
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super.initState();
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_position = widget.position;
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}
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void onPanUpdate(DragUpdateDetails d) {
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final offset = d.delta;
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final size = MediaQuery.of(context).size;
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double x = 0;
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double y = 0;
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if (_position.dx + offset.dx + widget.width > size.width) {
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x = size.width - widget.width;
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} else if (_position.dx + offset.dx < 0) {
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x = 0;
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} else {
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x = _position.dx + offset.dx;
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}
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if (_position.dy + offset.dy + widget.height > size.height) {
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y = size.height - widget.height;
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} else if (_position.dy + offset.dy < 0) {
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y = 0;
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} else {
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y = _position.dy + offset.dy;
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}
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setState(() {
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_position = Offset(x, y);
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});
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}
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checkScreenSize() {}
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checkKeyboard() {
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final bottomHeight = MediaQuery.of(context).viewInsets.bottom;
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final currentVisible = bottomHeight != 0;
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debugPrint(bottomHeight.toString() + currentVisible.toString());
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// save
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if (!_keyboardVisible && currentVisible) {
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_saveHeight = _position.dy;
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}
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// reset
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if (_lastBottomHeight > 0 && bottomHeight == 0) {
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setState(() {
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_position = Offset(_position.dx, _saveHeight);
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});
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}
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// onKeyboardVisible
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if (_keyboardVisible && currentVisible) {
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final sumHeight = bottomHeight + widget.height;
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final contextHeight = MediaQuery.of(context).size.height;
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if (sumHeight + _position.dy > contextHeight) {
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final y = contextHeight - sumHeight;
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setState(() {
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_position = Offset(_position.dx, y);
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});
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}
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}
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_keyboardVisible = currentVisible;
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_lastBottomHeight = bottomHeight;
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}
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@override
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Widget build(BuildContext context) {
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if (widget.checkKeyboard) {
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checkKeyboard();
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}
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if (widget.checkKeyboard) {
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checkScreenSize();
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}
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return Positioned(
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top: _position.dy,
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left: _position.dx,
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width: widget.width,
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height: widget.height,
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child: widget.builder(context, onPanUpdate));
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}
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}
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