add paginator

lib/pages/widgets/length_picker.dart

@@ -32,9 +32,10 @@ class _LengthPickerState extends State<LengthPicker> {
   }
 
   _setText() {
-    int v = int.parse(widget.controller.text, onError: (s) => 0);
-    int f = (v / 12).round();
+    double v = double.parse(widget.controller.text, (s) => 0);
+    int f = (v / 12).floor();
     int ins = (v % 12).round();
+
     _controller.text = "$f' $ins\"";
   }
 
@@ -81,8 +82,8 @@ class LengthPickerDialog extends StatefulWidget {
 }
 
 class _LengthPickerDialogState extends State<LengthPickerDialog> {
-  double _valueFeet;
-  double _valueInc;
+  int _valueFeet;
+  int _valueInc;
   @override
   void initState() {
     super.initState();
@@ -90,8 +91,8 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
     _valueInc = 0;
     if (widget.controller != null) {
       double v = double.parse(widget.controller.text, (s) => 0);
-      _valueFeet = v / 12;
-      _valueInc = v % 12;
+      _valueFeet = (v / 12).floor();
+      _valueInc = (v % 12).toInt();
     }
   }
 
@@ -106,7 +107,7 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
         fontSize: 16,
       )),
       children: [
-        Center(child: Text(_getText(_valueFeet))),
+        Center(child: Text(_getText())),
         Column(
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
@@ -121,7 +122,7 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
             ),
             Slider(
               activeColor: primaryColor,
-              value: _valueFeet,
+              value: _valueFeet.toDouble(),
               min: 0,
               max: 15,
               divisions: 100,
@@ -146,7 +147,7 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
             ),
             Slider(
               activeColor: primaryColor,
-              value: _valueInc,
+              value: _valueInc.toDouble(),
               min: 0,
               max: 11,
               divisions: 100,
@@ -163,7 +164,7 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
 
   _updateFeet(double v) {
     setState(() {
-      _valueFeet = v;
+      _valueFeet = v.toInt();
     });
     if (widget.controller != null) {
       int _v = _valueInc.round() + _valueFeet.round() * 12;
@@ -173,7 +174,7 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
 
   _updateInc(double v) {
     setState(() {
-      _valueInc = v;
+      _valueInc = v.toInt();
     });
     if (widget.controller != null) {
       int _v = _valueInc.round() + _valueFeet.round() * 12;
@@ -181,7 +182,7 @@ class _LengthPickerDialogState extends State<LengthPickerDialog> {
     }
   }
 
-  String _getText(double v) {
+  String _getText() {
     int ft = _valueFeet.round();
     int ins = _valueInc.round();
     return "$ft\' $ins\"";