flutter_package / dart_pdf

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Aleksei
Committed by David PHAM-VAN
24c7f1ce 1 parent 750fd0fb

Add `enableScrollToPage`

Inline Side-by-side
Showing 2 changed files with 63 additions and 24 deletions
... ... @@ -50,6 +50,7 @@ class PdfPreviewCustom extends StatefulWidget {
this.scrollPhysics,
this.shrinkWrap = false,
this.pagesBuilder,
this.enableScrollToPage = false,
}) : super(key: key);
/// Pdf paper page format
... ... @@ -102,6 +103,9 @@ class PdfPreviewCustom extends StatefulWidget {
/// their own pages.
final CustomPdfPagesBuilder? pagesBuilder;
/// Whether scroll to page functionality enabled.
final bool enableScrollToPage;
@override
PdfPreviewCustomState createState() => PdfPreviewCustomState();
}
... ... @@ -110,7 +114,7 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
with PdfPreviewRaster {
final listView = GlobalKey();
final _pageGlobalKeys = List.generate(100, (index) => GlobalKey());
late List<GlobalKey> _pageGlobalKeys;
bool infoLoaded = false;
... ... @@ -217,32 +221,62 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
);
}
_pageGlobalKeys = List.generate(pages.length, (index) => GlobalKey());
if (widget.pagesBuilder != null) {
return widget.pagesBuilder!(context, pages);
}
return ListView.builder(
controller: scrollController,
shrinkWrap: widget.shrinkWrap,
physics: widget.scrollPhysics,
padding: widget.padding,
itemCount: pages.length,
itemBuilder: (BuildContext context, int index) => GestureDetector(
onDoubleTap: () {
setState(() {
updatePosition = scrollController.position.pixels;
preview = index;
transformationController.value.setIdentity();
});
},
child: PdfPreviewPage(
key: getPageKey(index),
pageData: pages[index],
pdfPreviewPageDecoration: widget.pdfPreviewPageDecoration,
pageMargin: widget.previewPageMargin,
),
),
);
return widget.enableScrollToPage
? Scrollbar(
controller: scrollController,
child: SingleChildScrollView(
controller: scrollController,
physics: widget.scrollPhysics,
child: Column(
children: List.generate(
pages.length,
(index) => GestureDetector(
onDoubleTap: () {
setState(() {
updatePosition = scrollController.position.pixels;
preview = index;
transformationController.value.setIdentity();
});
},
child: PdfPreviewPage(
key: getPageKey(index),
pageData: pages[index],
pdfPreviewPageDecoration: widget.pdfPreviewPageDecoration,
pageMargin: widget.previewPageMargin,
),
),
),
),
),
)
: ListView.builder(
controller: scrollController,
shrinkWrap: widget.shrinkWrap,
physics: widget.scrollPhysics,
padding: widget.padding,
itemCount: pages.length,
itemBuilder: (BuildContext context, int index) => GestureDetector(
onDoubleTap: () {
setState(() {
updatePosition = scrollController.position.pixels;
preview = index;
transformationController.value.setIdentity();
});
},
child: PdfPreviewPage(
key: getPageKey(index),
pageData: pages[index],
pdfPreviewPageDecoration: widget.pdfPreviewPageDecoration,
pageMargin: widget.previewPageMargin,
),
),
);
}
Widget _zoomPreview() {
... ...
... ... @@ -64,6 +64,7 @@ class PdfPreview extends StatefulWidget {
this.onPageFormatChanged,
this.dpi,
this.actionBarTheme = const PdfActionBarTheme(),
this.enableScrollToPage = false,
}) : _pagesBuilder = null,
super(key: key);
... ... @@ -123,6 +124,7 @@ class PdfPreview extends StatefulWidget {
this.dpi,
this.actionBarTheme = const PdfActionBarTheme(),
required CustomPdfPagesBuilder pagesBuilder,
this.enableScrollToPage = false,
}) : _pagesBuilder = pagesBuilder,
super(key: key);
... ... @@ -233,6 +235,9 @@ class PdfPreview extends StatefulWidget {
/// their own pages.
final CustomPdfPagesBuilder? _pagesBuilder;
/// Whether scroll to page functionality enabled.
final bool enableScrollToPage;
@override
PdfPreviewState createState() => PdfPreviewState();
}
... ... @@ -302,7 +307,6 @@ class PdfPreviewState extends State<PdfPreview> {
initialPageFormat: previewData.pageFormat,
onComputeActualPageFormat: computeActualPageFormat,
);
setState(() {});
}
super.didUpdateWidget(oldWidget);
}
... ... @@ -406,6 +410,7 @@ class PdfPreviewState extends State<PdfPreview> {
shouldRepaint: widget.shouldRepaint,
pagesBuilder: widget._pagesBuilder,
dpi: widget.dpi,
enableScrollToPage: widget.enableScrollToPage,
);
}),
),
... ...