Fixed bug in undo when controller is in erase mode

CHANGELOG.md

@@ -30,10 +30,13 @@
 * **BUGFIX** Using PencilController setDrawing could lead to an exception when called in write mode
 * **BUGFIX** Fixed images for comparison of drawing routines
 * **IMPROVEMENT** PencilDecorator can have custom callback to draw background
-* **BREAKING** PencilDecorator now accepts either number of lines or a fixed spacing to draw ruled,
-  chequered or dotted pattern
+* **BREAKING** PencilDecorator now accepts either number of lines or a fixed spacing to draw ruled, chequered or dotted pattern
 * **DOCUMENTATION** Improved example
 
 ## 0.2.1
 
-* **BUGFIX** Changed signature of custom painter function in PencilDecoration
+* **BUGFIX** Changed signature of custom painter function in PencilDecoration
+
+## 0.2.2
+
+* **BUGFIX** Fixed bug in undo method when controller is in erase mode

example/lib/pencil_field_with_tools.dart

@@ -93,15 +93,12 @@ class _PencilFieldWithToolsState extends State<PencilFieldWithTools> {
     });
   }
 
-  /*void _onModeSelected(PencilMode newMode) {
+  void _onPrintJSON() {
     setState(() {
-      widget.controller.setMode(PencilMode.erase);
-      pencilPaint = eraserPaint;
+      widget.controller.undo();
     });
-  }*/
 
-  void _onPrintJSON() {
-    log(widget.controller.drawing.toJson().toString());
+    //log(widget.controller.drawing.toJson().toString());
   }
 }
 

example/pubspec.lock

@@ -122,7 +122,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.2.0"
+    version: "0.2.1"
   sky_engine:
     dependency: transitive
     description: flutter

lib/src/controller.dart

@@ -223,9 +223,13 @@ class PencilFieldController {
   void undo() {
     if (_undoPaths.strokeCount == 0) return;
 
+    // Move the last deleted stroke back to the list of strokes
     _strokePaths = _strokePaths.add(_undoPaths.lastStroke);
     _totalSize = null;
     _undoPaths.removeLast();
+
+    // Add an additional entry to the list of markers.
+    _writePathsMarkedForErase.add(false);
   }
 
   void clear() {

pubspec.yaml

@@ -1,7 +1,7 @@
 name: pencil_field
 description: Pencil / stylus interaction (writing & erasing) on different devices and platforms.
   Comes with versioned persistence of input.
-version: 0.2.1
+version: 0.2.2
 homepage: https://github.com/ManfredM/pencil_field
 
 environment: