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switch chapter button

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nyne
2024-10-29 11:35:31 +08:00
parent 74d0538f18
commit d86fe65b03
2 changed files with 125 additions and 1 deletions
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28
lib/pages/reader/images.dart
View File

@@ -323,6 +323,13 @@ class _ContinuousModeState extends State<_ContinuousMode>
void smoothTo(double offset) {
futurePosition ??= scrollController.offset;
if (futurePosition! > scrollController.position.maxScrollExtent &&
offset > 0) {
return;
} else if (futurePosition! < scrollController.position.minScrollExtent &&
offset < 0) {
return;
}
futurePosition = futurePosition! + offset * 1.2;
futurePosition = futurePosition!.clamp(
scrollController.position.minScrollExtent,
@@ -435,6 +442,27 @@ class _ContinuousModeState extends State<_ContinuousMode>
child: widget,
);
widget = NotificationListener<ScrollUpdateNotification>(
onNotification: (notification) {
var length = reader.maxChapter;
if (!scrollController.hasClients) return false;
if (scrollController.position.pixels <=
scrollController.position.minScrollExtent &&
reader.chapter != 1) {
context.readerScaffold.setFloatingButton(-1);
} else if (scrollController.position.pixels >=
scrollController.position.maxScrollExtent &&
reader.chapter < length) {
context.readerScaffold.setFloatingButton(1);
} else {
context.readerScaffold.setFloatingButton(0);
}
return true;
},
child: widget,
);
return PhotoView.customChild(
backgroundDecoration: BoxDecoration(
color: context.colorScheme.surface,

96
lib/pages/reader/scaffold.dart
View File

@@ -18,6 +18,27 @@ class _ReaderScaffoldState extends State<_ReaderScaffold> {
bool get isOpen => _isOpen;
int showFloatingButtonValue = 0;
double fABValue = 0;
void setFloatingButton(int value) {
if (value == 0) {
if (showFloatingButtonValue != 0) {
showFloatingButtonValue = 0;
fABValue = 0;
update();
}
}
if (value == 1 && showFloatingButtonValue == 0) {
showFloatingButtonValue = 1;
update();
} else if (value == -1 && showFloatingButtonValue == 0) {
showFloatingButtonValue = -1;
update();
}
}
@override
void initState() {
sliderFocus.canRequestFocus = false;
@@ -71,6 +92,12 @@ class _ReaderScaffoldState extends State<_ReaderScaffold> {
height: kBottomBarHeight + context.padding.bottom,
child: buildBottom(),
),
AnimatedPositioned(
duration: const Duration(milliseconds: 180),
right: 16,
bottom: showFloatingButtonValue == 0 ? -58 : 16,
child: buildEpChangeButton(),
),
],
);
}
@@ -371,6 +398,75 @@ class _ReaderScaffoldState extends State<_ReaderScaffold> {
width: 400,
);
}
Widget buildEpChangeButton() {
if (context.reader.widget.chapters == null) return const SizedBox();
switch (showFloatingButtonValue) {
case -1:
return FloatingActionButton(
onPressed: () => context.reader.toPrevChapter(),
child: const Icon(Icons.arrow_back_ios_outlined),
);
case 0:
return Container(
width: 58,
height: 58,
clipBehavior: Clip.antiAlias,
decoration: BoxDecoration(
color: Theme.of(context).colorScheme.primaryContainer,
borderRadius: BorderRadius.circular(16),
),
child: Icon(
Icons.arrow_forward_ios,
size: 24,
color: Theme.of(context).colorScheme.onPrimaryContainer,
),
);
case 1:
return Container(
width: 58,
height: 58,
clipBehavior: Clip.antiAlias,
decoration: BoxDecoration(
color: Theme.of(context).colorScheme.primaryContainer,
borderRadius: BorderRadius.circular(16),
),
child: Stack(
children: [
Positioned.fill(
child: Material(
color: Colors.transparent,
child: InkWell(
onTap: () => context.reader.toNextChapter(),
borderRadius: BorderRadius.circular(16),
child: Center(
child: Icon(
Icons.arrow_forward_ios,
size: 24,
color: Theme.of(context).colorScheme.onPrimaryContainer,
)),
),
),
),
Positioned(
bottom: 0,
left: 0,
right: 0,
height: fABValue,
child: ColoredBox(
color: Theme.of(context)
.colorScheme
.surfaceTint
.withOpacity(0.2),
child: const SizedBox.expand(),
),
)
],
),
);
}
return const SizedBox();
}
}
class _ChaptersView extends StatefulWidget {