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Improve the long press to zoom feature.

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Close #287
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nyne
2025-03-27 13:04:19 +08:00
parent d812332613
commit d440ed6424
3 changed files with 24 additions and 6 deletions
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24
lib/pages/reader/images.dart
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@@ -455,6 +455,7 @@ class _ContinuousModeState extends State<_ContinuousMode>
bool jumpToPrevChapter = false;
bool isZoomedIn = false;
bool isLongPressing = false;
@override
void initState() {
@@ -668,8 +669,23 @@ class _ContinuousModeState extends State<_ContinuousMode>
if (photoViewController.scale == 1 || fingers != 1) {
return;
}
Offset offset;
var sp = scrollController.position;
if (sp.pixels < sp.minScrollExtent
|| sp.pixels > sp.maxScrollExtent) {
offset = Offset(value.dx, value.dy);
} else {
if (reader.mode == ReaderMode.continuousTopToBottom) {
offset = Offset(value.dx, 0);
} else {
offset = Offset(0, value.dy);
}
}
if (isLongPressing) {
offset += value;
}
photoViewController.updateMultiple(
position: photoViewController.position + Offset(value.dx, value.dy),
position: photoViewController.position + offset,
);
},
onPointerSignal: onPointerSignal,
@@ -807,12 +823,12 @@ class _ContinuousModeState extends State<_ContinuousMode>
return;
}
double target = photoViewController.getInitialScale!.call()! * 1.75;
var size = MediaQuery.of(context).size;
photoViewController.animateScale?.call(
target,
Offset(size.width / 2 - location.dx, size.height / 2 - location.dy),
Offset(0, 0),
);
onScaleUpdate(target);
isLongPressing = true;
}
@override
@@ -822,6 +838,8 @@ class _ContinuousModeState extends State<_ContinuousMode>
}
double target = photoViewController.getInitialScale!.call()!;
photoViewController.animateScale?.call(target);
onScaleUpdate(target);
isLongPressing = false;
}
@override