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fluffychat/lib/pages/chat/events/message.dart

1162 lines
64 KiB
Dart

import 'dart:ui' as ui;
import 'package:flutter/material.dart';
import 'package:matrix/matrix.dart';
import 'package:swipe_to_action/swipe_to_action.dart';
import 'package:fluffychat/config/themes.dart';
import 'package:fluffychat/l10n/l10n.dart';
import 'package:fluffychat/pages/chat/chat.dart';
import 'package:fluffychat/pages/chat/events/pangea_message_reactions.dart';
import 'package:fluffychat/pages/chat/events/room_creation_state_event.dart';
import 'package:fluffychat/pangea/activity_sessions/activity_creation_state_event.dart';
import 'package:fluffychat/pangea/activity_sessions/activity_roles_event.dart';
import 'package:fluffychat/pangea/activity_sessions/activity_room_extension.dart';
import 'package:fluffychat/pangea/activity_sessions/activity_state_event.dart';
import 'package:fluffychat/pangea/chat/extensions/custom_room_display_extension.dart';
import 'package:fluffychat/pangea/common/widgets/pressable_button.dart';
import 'package:fluffychat/pangea/events/constants/pangea_event_types.dart';
import 'package:fluffychat/pangea/events/event_wrappers/pangea_message_event.dart';
import 'package:fluffychat/utils/date_time_extension.dart';
import 'package:fluffychat/utils/file_description.dart';
import 'package:fluffychat/utils/string_color.dart';
import 'package:fluffychat/widgets/avatar.dart';
import 'package:fluffychat/widgets/matrix.dart';
import 'package:fluffychat/widgets/member_actions_popup_menu_button.dart';
import '../../../config/app_config.dart';
import 'message_content.dart';
import 'reply_content.dart';
import 'state_message.dart';
class Message extends StatelessWidget {
final Event event;
final Event? nextEvent;
final Event? previousEvent;
final bool displayReadMarker;
final void Function(Event) onSelect;
final void Function(Event) onInfoTab;
final void Function(String) scrollToEventId;
final void Function() onSwipe;
final void Function() onMention;
final void Function() onEdit;
final bool longPressSelect;
final bool selected;
final bool singleSelected;
final Timeline timeline;
final bool highlightMarker;
final bool animateIn;
final void Function()? resetAnimateIn;
final bool wallpaperMode;
final ScrollController scrollController;
final List<Color> colors;
// #Pangea
final bool immersionMode;
final ChatController controller;
final bool isButton;
// Pangea#
const Message(
this.event, {
this.nextEvent,
this.previousEvent,
this.displayReadMarker = false,
this.longPressSelect = false,
required this.onSelect,
required this.onInfoTab,
required this.scrollToEventId,
required this.onSwipe,
this.selected = false,
required this.onEdit,
required this.singleSelected,
required this.timeline,
this.highlightMarker = false,
this.animateIn = false,
this.resetAnimateIn,
this.wallpaperMode = false,
required this.onMention,
required this.scrollController,
required this.colors,
// #Pangea
required this.immersionMode,
required this.controller,
this.isButton = false,
// Pangea#
super.key,
});
// #Pangea
void showToolbar(PangeaMessageEvent? pangeaMessageEvent) {
// if overlayController is not null, the message is already in overlay mode
if (pangeaMessageEvent != null) {
controller.showToolbar(
event,
pangeaMessageEvent: pangeaMessageEvent,
nextEvent: nextEvent,
prevEvent: previousEvent,
);
}
}
// Pangea#
@override
Widget build(BuildContext context) {
// #Pangea
PangeaMessageEvent? pangeaMessageEvent;
if (event.type == EventTypes.Message) {
pangeaMessageEvent = PangeaMessageEvent(
event: event,
timeline: timeline,
ownMessage: event.senderId == Matrix.of(context).client.userID,
);
}
WidgetsBinding.instance.addPostFrameCallback((_) {
if (controller.pangeaEditingEvent?.eventId == event.eventId) {
pangeaMessageEvent?.updateLatestEdit();
controller.clearEditingEvent();
}
});
// Pangea#
final theme = Theme.of(context);
if (!{
EventTypes.Message,
EventTypes.Sticker,
EventTypes.Encrypted,
EventTypes.CallInvite,
}.contains(event.type)) {
if (event.type.startsWith('m.call.')) {
return const SizedBox.shrink();
}
if (event.type == EventTypes.RoomCreate) {
// #Pangea
// return RoomCreationStateEvent(event: event);
return event.room.activityPlan != null
? ActivityCreationStateEvent(event: event)
: RoomCreationStateEvent(event: event);
// Pangea#
}
// #Pangea
if (event.type == PangeaEventTypes.activityPlan) {
return ActivityStateEvent(event: event);
}
if (event.type == PangeaEventTypes.activityRole) {
return ActivityRolesEvent(event: event);
}
// Pangea#
return StateMessage(event);
}
if (event.type == EventTypes.Message &&
event.messageType == EventTypes.KeyVerificationRequest) {
return StateMessage(event);
}
final client = Matrix.of(context).client;
final ownMessage = event.senderId == client.userID;
final alignment = ownMessage ? Alignment.topRight : Alignment.topLeft;
var color = theme.colorScheme.surfaceContainerHigh;
final displayTime = event.type == EventTypes.RoomCreate ||
nextEvent == null ||
!event.originServerTs.sameEnvironment(nextEvent!.originServerTs);
final nextEventSameSender = nextEvent != null &&
{
EventTypes.Message,
EventTypes.Sticker,
EventTypes.Encrypted,
}.contains(nextEvent!.type) &&
nextEvent!.senderId == event.senderId &&
!displayTime;
final previousEventSameSender = previousEvent != null &&
{
EventTypes.Message,
EventTypes.Sticker,
EventTypes.Encrypted,
}.contains(previousEvent!.type) &&
previousEvent!.senderId == event.senderId &&
previousEvent!.originServerTs.sameEnvironment(event.originServerTs);
// #Pangea
// final textColor =
// ownMessage ? theme.onBubbleColor : theme.colorScheme.onSurface;
final textColor = ownMessage
? ThemeData.dark().colorScheme.onPrimary
: theme.colorScheme.onSurface;
// final linkColor = ownMessage
// ? theme.brightness == Brightness.light
// ? theme.colorScheme.primaryFixed
// : theme.colorScheme.onTertiaryContainer
// : theme.colorScheme.primary;
final linkColor = theme.brightness == Brightness.light
? theme.colorScheme.primary
: ownMessage
? theme.colorScheme.onPrimary
: theme.colorScheme.onSurface;
// Pangea#
final rowMainAxisAlignment =
ownMessage ? MainAxisAlignment.end : MainAxisAlignment.start;
final displayEvent = event.getDisplayEvent(timeline);
const hardCorner = Radius.circular(4);
const roundedCorner = Radius.circular(AppConfig.borderRadius);
final borderRadius = BorderRadius.only(
topLeft: !ownMessage && nextEventSameSender ? hardCorner : roundedCorner,
topRight: ownMessage && nextEventSameSender ? hardCorner : roundedCorner,
bottomLeft:
!ownMessage && previousEventSameSender ? hardCorner : roundedCorner,
bottomRight:
ownMessage && previousEventSameSender ? hardCorner : roundedCorner,
);
final noBubble = ({
MessageTypes.Video,
MessageTypes.Image,
MessageTypes.Sticker,
}.contains(event.messageType) &&
event.fileDescription == null &&
!event.redacted) ||
(event.messageType == MessageTypes.Text &&
event.relationshipType == null &&
event.onlyEmotes &&
event.numberEmotes > 0 &&
event.numberEmotes <= 3);
if (ownMessage) {
// #Pangea
// color =
// displayEvent.status.isError ? Colors.redAccent : theme.bubbleColor;
color = displayEvent.status.isError
? Colors.redAccent
: Color.alphaBlend(
Colors.white.withAlpha(180),
ThemeData.dark().colorScheme.primary,
);
// Pangea#
}
final resetAnimateIn = this.resetAnimateIn;
var animateIn = this.animateIn;
final sentReactions = <String>{};
if (singleSelected) {
sentReactions.addAll(
event
.aggregatedEvents(
timeline,
RelationshipTypes.reaction,
)
.where(
(event) =>
event.senderId == event.room.client.userID &&
event.type == 'm.reaction',
)
.map(
(event) => event.content
.tryGetMap<String, Object?>('m.relates_to')
?.tryGet<String>('key'),
)
.whereType<String>(),
);
}
final showReceiptsRow =
event.hasAggregatedEvents(timeline, RelationshipTypes.reaction);
// #Pangea
// final showReactionPicker =
// singleSelected && event.room.canSendDefaultMessages;
// Pangea#
return Center(
child: Swipeable(
key: ValueKey(event.eventId),
background: const Padding(
padding: EdgeInsets.symmetric(horizontal: 12.0),
child: Center(
child: Icon(Icons.check_outlined),
),
),
direction: AppConfig.swipeRightToLeftToReply
? SwipeDirection.endToStart
: SwipeDirection.startToEnd,
onSwipe: (_) => onSwipe(),
child: Container(
constraints: const BoxConstraints(
maxWidth: FluffyThemes.maxTimelineWidth,
),
padding: EdgeInsets.only(
left: 8.0,
right: 8.0,
top: nextEventSameSender ? 1.0 : 4.0,
bottom: previousEventSameSender ? 1.0 : 4.0,
),
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment:
ownMessage ? CrossAxisAlignment.end : CrossAxisAlignment.start,
children: <Widget>[
// #Pangea
// if (displayTime || selected)
if (displayTime)
// Pangea#
Padding(
padding: displayTime
? const EdgeInsets.symmetric(vertical: 8.0)
: EdgeInsets.zero,
child: Center(
child: Padding(
padding: const EdgeInsets.only(top: 4.0),
child: Material(
borderRadius:
BorderRadius.circular(AppConfig.borderRadius * 2),
color: theme.colorScheme.surface.withAlpha(128),
child: Padding(
padding: const EdgeInsets.symmetric(
horizontal: 8.0,
vertical: 2.0,
),
child: Text(
event.originServerTs.localizedTime(context),
style: TextStyle(
fontSize: 12 * AppConfig.fontSizeFactor,
fontWeight: FontWeight.bold,
color: theme.colorScheme.secondary,
),
),
),
),
),
),
),
StatefulBuilder(
builder: (context, setState) {
if (animateIn && resetAnimateIn != null) {
WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
animateIn = false;
// #Pangea
// setState(resetAnimateIn);
if (context.mounted) setState(resetAnimateIn);
// Pangea#
});
}
return AnimatedSize(
duration: FluffyThemes.animationDuration,
curve: FluffyThemes.animationCurve,
clipBehavior: Clip.none,
alignment: ownMessage
? Alignment.bottomRight
: Alignment.bottomLeft,
child: animateIn
? const SizedBox(height: 0, width: double.infinity)
: Stack(
clipBehavior: Clip.none,
children: [
Positioned(
top: 0,
bottom: 0,
left: 0,
right: 0,
child: InkWell(
hoverColor: longPressSelect
? Colors.transparent
: null,
enableFeedback: !selected,
// #Pangea
// onTap: longPressSelect
// ? null
// : () => onSelect(event),
onTap: () => showToolbar(pangeaMessageEvent),
onLongPress: () =>
showToolbar(pangeaMessageEvent),
// Pangea#
borderRadius: BorderRadius.circular(
AppConfig.borderRadius / 2,
),
child: Material(
borderRadius: BorderRadius.circular(
AppConfig.borderRadius / 2,
),
color: selected || highlightMarker
? theme.colorScheme.secondaryContainer
.withAlpha(128)
: Colors.transparent,
),
),
),
Row(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: rowMainAxisAlignment,
children: [
// #Pangea
// if (longPressSelect && !event.redacted)
// SizedBox(
// height: 32,
// width: Avatar.defaultSize,
// child: IconButton(
// padding: EdgeInsets.zero,
// tooltip: L10n.of(context).select,
// icon: Icon(
// selected
// ? Icons.check_circle
// : Icons.circle_outlined,
// ),
// onPressed: () => onSelect(event),
// ),
// )
// else if (nextEventSameSender || ownMessage)
if (nextEventSameSender || ownMessage)
// Pangea#
SizedBox(
width: Avatar.defaultSize,
child: Center(
child: SizedBox(
width: 16,
height: 16,
child: event.status ==
EventStatus.error
? const Icon(
Icons.error,
color: Colors.red,
)
: event.fileSendingStatus != null
? const CircularProgressIndicator
.adaptive(
strokeWidth: 1,
)
: null,
),
),
)
else
FutureBuilder<User?>(
future: event.fetchSenderUser(),
builder: (context, snapshot) {
final user = snapshot.data ??
event.senderFromMemoryOrFallback;
return Avatar(
mxContent: user.avatarUrl,
name: user.calcDisplayname(),
onTap: () =>
showMemberActionsPopupMenu(
context: context,
user: user,
onMention: onMention,
),
presenceUserId: user.stateKey,
presenceBackgroundColor: wallpaperMode
? Colors.transparent
: null,
);
},
),
Expanded(
child: Column(
crossAxisAlignment:
CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
if (!nextEventSameSender)
Padding(
padding: const EdgeInsets.only(
left: 8.0,
bottom: 4,
),
child: ownMessage ||
event.room.isDirectChat
? const SizedBox(height: 12)
: FutureBuilder<User?>(
future:
event.fetchSenderUser(),
builder:
(context, snapshot) {
final displayname = snapshot
.data
?.calcDisplayname() ??
event
.senderFromMemoryOrFallback
.calcDisplayname();
return Text(
// #Pangea
// displayname,
controller.room
.senderDisplayName(
snapshot.data ??
event
.senderFromMemoryOrFallback,
),
// Pangea#
style: TextStyle(
fontSize: 11,
fontWeight:
FontWeight.bold,
color: (theme.brightness ==
Brightness
.light
? displayname
.color
: displayname
.lightColorText),
shadows:
!wallpaperMode
? null
: [
const Shadow(
offset:
Offset(
0.0,
0.0,
),
blurRadius:
3,
color: Colors
.black,
),
],
),
maxLines: 1,
overflow: TextOverflow
.ellipsis,
);
},
),
),
Container(
alignment: alignment,
padding:
const EdgeInsets.only(left: 8),
child: GestureDetector(
// #Pangea
onTap: () =>
showToolbar(pangeaMessageEvent),
onLongPress: () =>
showToolbar(pangeaMessageEvent),
// onLongPress: longPressSelect
// ? null
// : () {
// HapticFeedback.heavyImpact();
// onSelect(event);
// },
// Pangea#
child: AnimatedOpacity(
opacity: animateIn
? 0
: event.messageType ==
MessageTypes
.BadEncrypted ||
event.status.isSending
? 0.5
: 1,
duration: FluffyThemes
.animationDuration,
curve:
FluffyThemes.animationCurve,
child:
// #Pangea
PressableButton(
triggerAnimation: controller
.showToolbarStream.stream
.where(
(eventID) =>
eventID == event.eventId,
),
depressed: !isButton,
borderRadius: borderRadius,
onPressed: () {
showToolbar(
pangeaMessageEvent,
);
},
color: color,
visible: isButton && !noBubble,
child:
// Pangea#
Container(
decoration: BoxDecoration(
color: noBubble
? Colors.transparent
: color,
borderRadius: borderRadius,
),
clipBehavior: Clip.antiAlias,
// #Pangea
child:
CompositedTransformTarget(
link: MatrixState.pAnyState
.layerLinkAndKey(
event.eventId,
)
.link,
// child: BubbleBackground(
// colors: colors,
// ignore: noBubble || !ownMessage,
// scrollController: scrollController,
// Pangea#
child: Container(
// #Pangea
key: MatrixState.pAnyState
.layerLinkAndKey(
event.eventId,
)
.key,
// Pangea#
decoration: BoxDecoration(
borderRadius:
BorderRadius
.circular(
AppConfig
.borderRadius,
),
),
constraints:
const BoxConstraints(
maxWidth: FluffyThemes
.columnWidth *
1.5,
),
child: Column(
mainAxisSize:
MainAxisSize.min,
crossAxisAlignment:
CrossAxisAlignment
.start,
children: <Widget>[
if ({
RelationshipTypes
.reply,
RelationshipTypes
.thread,
}.contains(
event
.relationshipType,
))
FutureBuilder<
Event?>(
future: event
.getReplyEvent(
timeline,
),
builder: (
BuildContext
context,
snapshot,
) {
final replyEvent =
snapshot
.hasData
? snapshot
.data!
: Event(
eventId:
event.relationshipEventId!,
content: {
'msgtype': 'm.text',
'body': '...',
},
// #Pangea
// senderId: event
// .senderId,
senderId:
"",
// Pangea#
type:
'm.room.message',
room:
event.room,
status:
EventStatus.sent,
originServerTs:
DateTime.now(),
);
return Padding(
padding:
const EdgeInsets
.only(
left: 16,
right: 16,
top: 8,
),
child:
Material(
color: Colors
.transparent,
borderRadius:
ReplyContent
.borderRadius,
child:
InkWell(
borderRadius:
ReplyContent
.borderRadius,
onTap: () =>
scrollToEventId(
replyEvent
.eventId,
),
child:
AbsorbPointer(
child:
ReplyContent(
replyEvent,
ownMessage:
ownMessage,
timeline:
timeline,
),
),
),
),
);
},
),
MessageContent(
displayEvent,
textColor:
textColor,
linkColor:
linkColor,
onInfoTab:
onInfoTab,
borderRadius:
borderRadius,
timeline: timeline,
selected: selected,
// #Pangea
pangeaMessageEvent:
pangeaMessageEvent,
immersionMode:
immersionMode,
controller:
controller,
nextEvent:
nextEvent,
prevEvent:
previousEvent,
// Pangea#
),
if (event
.hasAggregatedEvents(
timeline,
RelationshipTypes
.edit,
))
Padding(
padding:
const EdgeInsets
.only(
bottom: 8.0,
left: 16.0,
right: 16.0,
),
child: Row(
mainAxisSize:
MainAxisSize
.min,
spacing: 4.0,
children: [
Icon(
Icons
.edit_outlined,
color: textColor
.withAlpha(
164,
),
size: 14,
),
Text(
displayEvent
.originServerTs
.localizedTimeShort(
context,
),
style:
TextStyle(
color: textColor
.withAlpha(
164,
),
fontSize:
11,
),
),
],
),
),
],
),
),
),
),
),
),
),
),
// #Pangea
// Align(
// alignment: ownMessage
// ? Alignment.bottomRight
// : Alignment.bottomLeft,
// child: AnimatedSize(
// duration:
// FluffyThemes.animationDuration,
// curve: FluffyThemes.animationCurve,
// child: showReactionPicker
// ? Padding(
// padding:
// const EdgeInsets.all(
// 4.0,
// ),
// child: Material(
// elevation: 4,
// borderRadius:
// BorderRadius.circular(
// AppConfig.borderRadius,
// ),
// shadowColor: theme
// .colorScheme.surface
// .withAlpha(128),
// child:
// SingleChildScrollView(
// scrollDirection:
// Axis.horizontal,
// child: Row(
// mainAxisSize:
// MainAxisSize.min,
// children: [
// ...AppConfig
// .defaultReactions
// .map(
// (emoji) =>
// IconButton(
// padding:
// EdgeInsets
// .zero,
// icon: Center(
// child:
// Opacity(
// opacity: sentReactions
// .contains(
// emoji,
// )
// ? 0.33
// : 1,
// child: Text(
// emoji,
// style:
// const TextStyle(
// fontSize:
// 20,
// ),
// textAlign:
// TextAlign
// .center,
// ),
// ),
// ),
// onPressed:
// sentReactions
// .contains(
// emoji,
// )
// ? null
// : () {
// onSelect(
// event,
// );
// event.room.sendReaction(
// event.eventId,
// emoji,
// );
// },
// ),
// ),
// IconButton(
// icon: const Icon(
// Icons
// .add_reaction_outlined,
// ),
// tooltip: L10n.of(
// context,
// ).customReaction,
// onPressed:
// () async {
// final emoji =
// await showAdaptiveBottomSheet<
// String>(
// context:
// context,
// builder:
// (context) =>
// Scaffold(
// appBar:
// AppBar(
// title:
// Text(
// L10n.of(context)
// .customReaction,
// ),
// leading:
// CloseButton(
// onPressed:
// () =>
// Navigator.of(
// context,
// ).pop(
// null,
// ),
// ),
// ),
// body:
// SizedBox(
// height: double
// .infinity,
// child:
// EmojiPicker(
// onEmojiSelected: (
// _,
// emoji,
// ) =>
// Navigator.of(
// context,
// ).pop(
// emoji
// .emoji,
// ),
// config:
// Config(
// emojiViewConfig:
// const EmojiViewConfig(
// backgroundColor:
// Colors.transparent,
// ),
// bottomActionBarConfig:
// const BottomActionBarConfig(
// enabled:
// false,
// ),
// categoryViewConfig:
// CategoryViewConfig(
// initCategory:
// Category.SMILEYS,
// backspaceColor:
// theme.colorScheme.primary,
// iconColor:
// theme.colorScheme.primary.withAlpha(
// 128,
// ),
// iconColorSelected:
// theme.colorScheme.primary,
// indicatorColor:
// theme.colorScheme.primary,
// backgroundColor:
// theme.colorScheme.surface,
// ),
// skinToneConfig:
// SkinToneConfig(
// dialogBackgroundColor:
// Color.lerp(
// theme.colorScheme.surface,
// theme.colorScheme.primaryContainer,
// 0.75,
// )!,
// indicatorColor:
// theme.colorScheme.onSurface,
// ),
// ),
// ),
// ),
// ),
// );
// if (emoji ==
// null) {
// return;
// }
// if (sentReactions
// .contains(
// emoji,
// )) {
// return;
// }
// onSelect(event);
// await event.room
// .sendReaction(
// event.eventId,
// emoji,
// );
// },
// ),
// ],
// ),
// ),
// ),
// )
// : const SizedBox.shrink(),
// ),
// ),
// Pangea#
],
),
),
],
),
],
),
);
},
),
// #Pangea
// AnimatedSize(
// duration: FluffyThemes.animationDuration,
// curve: FluffyThemes.animationCurve,
// alignment: Alignment.bottomCenter,
// clipBehavior: Clip.none,
// child: !showReceiptsRow
// ? const SizedBox.shrink()
// : Padding(
// padding: EdgeInsets.only(
// top: 4.0,
// left: (ownMessage ? 0 : Avatar.defaultSize) + 12.0,
// right: ownMessage ? 0 : 12.0,
// ),
// child: MessageReactions(event, timeline),
// ),
// ),
!showReceiptsRow
? const SizedBox.shrink()
: Padding(
padding: EdgeInsets.only(
top: 4.0,
left: (ownMessage ? 0 : Avatar.defaultSize) + 12.0,
right: ownMessage ? 0 : 12.0,
),
child: PangeaMessageReactions(
event,
timeline,
controller,
key: MatrixState.pAnyState
.layerLinkAndKey(
'message_reactions_${event.eventId}',
)
.key,
),
// Pangea#
),
if (displayReadMarker)
Row(
children: [
Expanded(
child: Divider(
color: theme.colorScheme.surfaceContainerHighest,
),
),
Container(
margin: const EdgeInsets.symmetric(
horizontal: 4,
vertical: 16.0,
),
padding: const EdgeInsets.symmetric(
horizontal: 8,
vertical: 2,
),
decoration: BoxDecoration(
borderRadius:
BorderRadius.circular(AppConfig.borderRadius / 3),
color: theme.colorScheme.surface.withAlpha(128),
),
child: Text(
L10n.of(context).readUpToHere,
style: TextStyle(
fontSize: 12 * AppConfig.fontSizeFactor,
),
),
),
Expanded(
child: Divider(
color: theme.colorScheme.surfaceContainerHighest,
),
),
],
),
],
),
),
),
);
}
}
class BubbleBackground extends StatelessWidget {
const BubbleBackground({
super.key,
required this.scrollController,
required this.colors,
required this.ignore,
required this.child,
});
final ScrollController scrollController;
final List<Color> colors;
final bool ignore;
final Widget child;
@override
Widget build(BuildContext context) {
if (ignore) return child;
return CustomPaint(
painter: BubblePainter(
repaint: scrollController,
colors: colors,
context: context,
),
child: child,
);
}
}
class BubblePainter extends CustomPainter {
BubblePainter({
required this.context,
required this.colors,
required super.repaint,
});
final BuildContext context;
final List<Color> colors;
ScrollableState? _scrollable;
@override
void paint(Canvas canvas, Size size) {
final scrollable = _scrollable ??= Scrollable.of(context);
final scrollableBox = scrollable.context.findRenderObject() as RenderBox;
final scrollableRect = Offset.zero & scrollableBox.size;
final bubbleBox = context.findRenderObject() as RenderBox;
final origin =
bubbleBox.localToGlobal(Offset.zero, ancestor: scrollableBox);
final paint = Paint()
..shader = ui.Gradient.linear(
scrollableRect.topCenter,
scrollableRect.bottomCenter,
colors,
[0.0, 1.0],
TileMode.clamp,
Matrix4.translationValues(-origin.dx, -origin.dy, 0.0).storage,
);
canvas.drawRect(Offset.zero & size, paint);
}
@override
bool shouldRepaint(BubblePainter oldDelegate) {
final scrollable = Scrollable.of(context);
final oldScrollable = _scrollable;
_scrollable = scrollable;
return scrollable.position != oldScrollable?.position;
}
}