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Add optional two page mode

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This commit is contained in:
Julian Mutter
2025-07-25 17:57:53 +02:00
parent ef30e6235d
commit d06cf73dd9
1 changed files with 66 additions and 46 deletions
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112
lib/sheet_viewer_page.dart
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@@ -26,6 +26,7 @@ class _SheetViewerPageState extends State<SheetViewerPage> {
bool isFullscreen = false;
late Future<bool> documentLoaded;
PdfDocument? document;
bool twoPageMode = true;
@override
void initState() {
@@ -79,58 +80,77 @@ class _SheetViewerPageState extends State<SheetViewerPage> {
if (snapshot.hasData && document != null) {
numPages = document!.pages.length;
return GestureDetector(
onTapUp: (TapUpDetails details) {
// Get the size of the screen
final screenWidth = MediaQuery.of(context).size.width;
return Stack(
children: [
Container(
alignment: Alignment.bottomLeft,
margin: EdgeInsets.all(10),
child: FloatingActionButton(
onPressed: () {
setState(() {
twoPageMode = !twoPageMode;
});
},
child: Icon(twoPageMode ? Icons.filter_1 : Icons.filter_2),
),
),
GestureDetector(
onTapUp: (TapUpDetails details) {
// Get the size of the screen
final screenWidth = MediaQuery.of(context).size.width;
// print("Touch at y = ${details.localPosition.dy}");
// print("Touch at x = ${details.localPosition.dx}");
// print("Screenwidth = ${screenWidth}");
// Check where the user tapped
// if (details.localPosition.dy < 100) {
// TODO
// setState(() {
// toggleFullscreen();
// });
if (details.localPosition.dx < screenWidth / 2) {
// Left half of the screen
setState(() {
page = page > 1 ? page - 1 : 1;
});
} else {
// Right half of the screen
setState(() {
page = page < numPages ? page + 1 : numPages;
});
}
},
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Stack(
// print("Touch at y = ${details.localPosition.dy}");
// print("Touch at x = ${details.localPosition.dx}");
// print("Screenwidth = ${screenWidth}");
// Check where the user tapped
// if (details.localPosition.dy < 100) {
// TODO
// setState(() {
// toggleFullscreen();
// });
if (details.localPosition.dx < screenWidth / 2) {
// Left half of the screen
setState(() {
page = page > 1 ? page - 1 : 1;
});
} else {
// Right half of the screen
setState(() {
page = page < numPages ? page + 1 : numPages;
});
}
},
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
PdfPageView(
key: ValueKey(page),
document: document,
pageNumber: page,
alignment: Alignment.center,
Stack(
children: [
PdfPageView(
key: ValueKey(page),
document: document,
pageNumber: page,
alignment: Alignment.center,
),
Container(
alignment: Alignment.bottomCenter,
padding: EdgeInsets.only(bottom: 5),
child: Text('$page / $numPages'),
),
],
),
Container(
alignment: Alignment.bottomCenter,
padding: EdgeInsets.only(bottom: 5),
child: Text('$page / $numPages'),
Visibility(
visible: twoPageMode == true,
child: PdfPageView(
key: ValueKey(page),
document: document,
pageNumber: page + 1,
alignment: Alignment.center,
),
),
],
),
// PdfPageView(
// key: ValueKey(page),
// document: document,
// pageNumber: page + 1,
// alignment: Alignment.center,
// ),
],
),
),
],
);
} else if (snapshot.hasError) {
return Center(