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fix the hang when clicking the drawer in the stocks app

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R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/980043005
This commit is contained in:
Hixie 2015-03-05 15:46:21 -08:00
parent 3a73d55159
commit 37c27faae4
2 changed files with 6 additions and 3 deletions
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8
examples/fn/widgets/drawer.dart
View File

@ -73,9 +73,11 @@ class DrawerAnimation {
void _animateToPosition(double targetPosition) {
double distance = (targetPosition - _position).abs();
double targetDuration = distance / _kWidth * _kBaseSettleDurationMS;
double duration = math.min(targetDuration, _kMaxSettleDurationMS);
_animate(duration, _position, targetPosition, _kAnimationCurve);
if (distance != 0) {
double targetDuration = distance / _kWidth * _kBaseSettleDurationMS;
double duration = math.min(targetDuration, _kMaxSettleDurationMS);
_animate(duration, _position, targetPosition, _kAnimationCurve);
}
}
void handleFlingStart(event) {

1
framework/animation/generator.dart
View File

@ -66,6 +66,7 @@ class AnimationGenerator extends FrameGenerator {
this.curve: linear,
Function onDone
}):super(onDone: onDone) {
assert(duration > 0);
double startTime = 0.0;
_stream = super.onTick.map((timeStamp) {
if (startTime == 0.0)