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opt: легонько наоптимизибурмалдил в rlottie стикерах/эмодзи

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This commit is contained in:
Jganenokk
2026-07-11 15:45:39 +07:00
parent ce929a121f
commit b8dce4fd63
4 changed files with 103 additions and 52 deletions
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lib/frontend/widgets/lottie_image.dart
+37 -12
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@@ -84,6 +84,8 @@ class LottiePlayer extends StatefulWidget {
class _LottiePlayerState extends State<LottiePlayer>
with SingleTickerProviderStateMixin {
static const int _leadFrames = 6;
static const double _slowSpeed = 0.5;
static const double _rampMs = 200.0;
final ValueNotifier<int> _frameIndex = ValueNotifier(0);
late final Ticker _ticker;
@@ -94,6 +96,11 @@ class _LottiePlayerState extends State<LottiePlayer>
bool _started = false;
bool _showedFrames = false;
double _speed = 1.0;
double _targetSpeed = 1.0;
double _playheadMs = 0.0;
double? _lastElapsedMs;
bool get _isScrolling => _scrollState?.value ?? false;
bool get _canLoad =>
!_isScrolling && !LottieLoadGovernor.instance.throttled.value;
@@ -125,6 +132,10 @@ class _LottiePlayerState extends State<LottiePlayer>
_releaseClip();
_started = false;
_showedFrames = false;
_playheadMs = 0.0;
_speed = 1.0;
_targetSpeed = _isScrolling ? _slowSpeed : 1.0;
_lastElapsedMs = null;
}
}
@@ -152,20 +163,31 @@ class _LottiePlayerState extends State<LottiePlayer>
if (clip == null || clip.frameCount <= 1) return;
final periodMs = clip.durationMs;
if (periodMs <= 0) return;
final t = (elapsed.inMilliseconds % periodMs) / periodMs;
final index = (t * (clip.frameCount - 1)).round().clamp(
0,
clip.frameCount - 1,
);
final nowMs = elapsed.inMicroseconds / 1000.0;
final last = _lastElapsedMs;
_lastElapsedMs = nowMs;
if (last == null) return;
var dt = nowMs - last;
if (dt < 0) dt = 0;
if (dt > 64) dt = 64;
if (_speed != _targetSpeed) {
final step = dt / _rampMs * (1.0 - _slowSpeed);
final diff = _targetSpeed - _speed;
_speed = diff.abs() <= step ? _targetSpeed : _speed + step * diff.sign;
}
_playheadMs = (_playheadMs + dt * _speed) % periodMs;
final t = _playheadMs / periodMs;
final index =
(t * (clip.frameCount - 1)).round().clamp(0, clip.frameCount - 1);
if (index != _frameIndex.value) _frameIndex.value = index;
}
void _onGateChanged() {
if (!mounted) return;
if (_isScrolling) {
if (_ticker.isActive) _ticker.stop();
return;
}
_targetSpeed = _isScrolling ? _slowSpeed : 1.0;
final clip = _clip;
if (clip != null) {
_maybeStartTicker(clip);
@@ -182,15 +204,18 @@ class _LottiePlayerState extends State<LottiePlayer>
}
void _maybeStartTicker(RlottieClip clip) {
if (_isScrolling || clip.frameCount <= 1) return;
if (clip.frameCount <= 1) return;
final lead = clip.frameCount < _leadFrames ? clip.frameCount : _leadFrames;
if (clip.ready.value >= lead && !_ticker.isActive) _ticker.start();
if (clip.ready.value >= lead && !_ticker.isActive) {
_lastElapsedMs = null;
_ticker.start();
}
}
void _ensure(double box) {
if (_clip != null) return;
final dpr = MediaQuery.devicePixelRatioOf(context);
final raw = (box * dpr.clamp(1.0, 2.0)).clamp(96.0, 512.0);
final raw = (box * dpr.clamp(1.0, 2.0)).clamp(96.0, 384.0);
_px = (raw / 32).ceil() * 32;
if (_started || !_canLoad) return;
_startLoad();