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feat: optimize Bluetooth connection status display

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This commit is contained in:
Nedifinita
2025-09-25 00:44:03 +08:00
parent 23ab5ec746
commit ba373f749a
9 changed files with 258 additions and 32 deletions
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49
lib/screens/history_screen.dart
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@@ -33,6 +33,7 @@ class HistoryScreenState extends State<HistoryScreen> {
final ScrollController _scrollController = ScrollController();
bool _isAtTop = true;
MergeSettings _mergeSettings = MergeSettings();
double _itemHeightCache = 0.0;
final Map<String, double> _mapOptimalZoom = {};
final Map<String, bool> _mapCalculating = {};
@@ -123,6 +124,9 @@ class HistoryScreenState extends State<HistoryScreen> {
if (!isNewRecord) return;
if (mounted) {
final previousScrollOffset = _scrollController.hasClients ? _scrollController.offset : 0.0;
final previousItemCount = _displayItems.length;
final allRecords = await DatabaseService.instance.getAllRecords();
final items = MergeService.getMixedList(allRecords, _mergeSettings);
@@ -131,13 +135,30 @@ class HistoryScreenState extends State<HistoryScreen> {
_displayItems.addAll(items);
});
if (_isAtTop && _scrollController.hasClients) {
_scrollController.jumpTo(0.0);
if (_scrollController.hasClients) {
if (_isAtTop) {
_scrollController.jumpTo(0.0);
} else {
final newItemCount = items.length;
final itemDifference = newItemCount - previousItemCount;
if (itemDifference > 0 && previousScrollOffset > 0) {
final itemHeight = _getEstimatedItemHeight();
final adjustedOffset = previousScrollOffset + (itemDifference * itemHeight);
_scrollController.jumpTo(adjustedOffset.clamp(0.0, _scrollController.position.maxScrollExtent));
}
}
}
}
} catch (e) {
print('添加新纪录失败: $e');
} catch (e) {}
}
double _getEstimatedItemHeight() {
if (_itemHeightCache > 0) {
return _itemHeightCache;
}
return 85.0;
}
bool _hasDataChanged(List<Object> newItems) {
@@ -489,7 +510,11 @@ class HistoryScreenState extends State<HistoryScreen> {
final isSelected = _selectedRecords.contains(record.uniqueId);
final isExpanded =
!isSubCard && (_expandedStates[record.uniqueId] ?? false);
return Card(
final GlobalKey itemKey = GlobalKey();
final Widget card = Card(
key: itemKey,
color: isSelected && _isEditMode
? const Color(0xFF2E2E2E)
: const Color(0xFF1E1E1E),
@@ -545,6 +570,20 @@ class HistoryScreenState extends State<HistoryScreen> {
_buildLocoInfo(record),
if (isExpanded) _buildExpandedContent(record)
]))));
WidgetsBinding.instance.addPostFrameCallback((_) {
if (_itemHeightCache <= 0 && itemKey.currentContext != null) {
final RenderBox renderBox = itemKey.currentContext!.findRenderObject() as RenderBox;
final double realHeight = renderBox.size.height;
if (realHeight > 0) {
setState(() {
_itemHeightCache = realHeight;
});
}
}
});
return card;
}
Widget _buildRecordHeader(TrainRecord record, {bool isMerged = false}) {