exo6 taille variable

lib/exo6.dart

@@ -40,11 +40,10 @@ class TileWidget extends StatelessWidget {
 }
 
 int emptyIndex=0;
-int size=4;
 
-List<Widget>createTileWidgets(){
+List<Widget>createTileWidgets(double slide){
   List<Widget> tiles = <Widget>[];
-  int max=size*size;
+  int max=slide.toInt()*slide.toInt();
   tiles.add(TileWidget(Tile("Vide",Colors.white)));
   for(int i=0;i<max-1;i++){
     tiles.add(TileWidget(Tile((i+1).toString(), Colors.grey)));
@@ -52,9 +51,6 @@ List<Widget>createTileWidgets(){
   return tiles;
 }
 
-String getIndex(TileWidget w){
-  return w.tile.index;
-}
 
 void main() => runApp(new MaterialApp(home: PositionedTiles()));
 
@@ -64,56 +60,78 @@ class PositionedTiles extends StatefulWidget {
 }
 
 class PositionedTilesState extends State<PositionedTiles> {
-  List<Widget> tiles = createTileWidgets();
-  Widget icone = Icon(Icons.sentiment_very_satisfied);
+  TextStyle textStyle = TextStyle(fontSize: 16, fontWeight: FontWeight.bold,);
+  var appBar= AppBar(title: Text('Exo 6'),);
+  double _currentSlideValue=4;
+  List<Widget> tiles=createTileWidgets(4);
 
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      appBar: AppBar(
-        title: Text('Moving Tiles'),
-        centerTitle: true,
-      ),
-      body: GridView.builder(
-          padding: const EdgeInsets.all(10),
-          itemCount: size*size,
-          gridDelegate:SliverGridDelegateWithFixedCrossAxisCount(
-            crossAxisCount: size,
-            crossAxisSpacing: 5.0,
-            mainAxisSpacing: 5.0,
+      appBar: appBar,
+      body: ListView(children: [
+        Container(
+          height: ((MediaQuery.of(context).size.height)*0.7),
+          child:GridView.builder(
+            padding: const EdgeInsets.all(10),
+            itemCount: _currentSlideValue.toInt()*_currentSlideValue.toInt(),
+            gridDelegate:SliverGridDelegateWithFixedCrossAxisCount(
+              crossAxisCount: _currentSlideValue.toInt(),
+              crossAxisSpacing: 5.0,
+              mainAxisSpacing: 5.0,
+            ),
+            itemBuilder: (BuildContext context, int index) {
+              return InkWell(
+                child: tiles[index],
+                onTap: (){
+                  swapTiles(index,emptyIndex);
+                },
+              );
+            },
           ),
-          itemBuilder: (BuildContext context, int index) {
-            return InkWell(
-              child: tiles[index],
-              onTap: (){
-                swapTiles(index,emptyIndex);
-              },
-            );
-          },
         ),
+        Row(children: <Widget>[
+              Container(width: 90,child:Text('Taille:', style: textStyle,textAlign: TextAlign.center,),padding: EdgeInsets.fromLTRB(8, 0, 0, 0),),
+              Container(height:((MediaQuery.of(context).size.height)/7)-appBar.preferredSize.height,width: MediaQuery.of(context).size.width-90,child: Slider(
+                  value: _currentSlideValue,
+                  min: 2, max: 7, divisions: 5,
+                  label: _currentSlideValue.round().toString(),
+                  onChanged: (double value) {
+                    setState(() {
+                      _currentSlideValue = value;
+                      tiles=createTileWidgets(_currentSlideValue);
+                      //initialSize=_currentSlideValue;
+                    });
+                  }
+               ),
+              ),
+            ]
+        ),
+      ],
+      )
     );
   }
 
   swapTiles(int current, int empty) {
     setState(() {
-      icone=Icon(Icons.favorite);
-      print(current);
-      if(current==empty+1 && current%size!=0){
+      //print(current);
+      if(current==empty+1 && current%_currentSlideValue!=0){
         emptyIndex=current;
         tiles.insert(empty, tiles.removeAt(current));
-      }else if(current==empty-1  && empty%size!=0){
+      }else if(current==empty-1  && empty%_currentSlideValue!=0){
         emptyIndex=current;
         tiles.insert(empty, tiles.removeAt(current));
       }
-      else if(current==empty+size){
+      else if(current==empty+_currentSlideValue){
         emptyIndex=current;
         tiles.insert(current, tiles.removeAt(empty));
         tiles.insert(empty, tiles.removeAt(current-1));
-      }else if(current==empty-size){
+      }else if(current==empty-_currentSlideValue){
         emptyIndex=current;
         tiles.insert(current, tiles.removeAt(empty));
         tiles.insert(empty, tiles.removeAt(current+1));
       }else print("Can't move this");
     });
   }
+
 }
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