diff --git a/src/main.rs b/src/main.rs
index a211f64..d23821f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -26,7 +26,7 @@ use druid::{
 };
 
 use stiletto::history::VersionedCanvas;
-use stiletto::widget::{CanvasData, CanvasWidget};
+use stiletto::widget::{CanvasState, CanvasWidget};
 use stiletto::DocumentSnapshot;
 
 pub fn main() {
@@ -35,7 +35,7 @@ pub fn main() {
         .title(
             LocalizedString::new("custom-widget-demo-window-title").with_placeholder("Stiletto"),
         );
-    let canvas_data = CanvasData {
+    let canvas_data = CanvasState {
         current_element: None,
         elements: VersionedCanvas::new(vector![]),
     };
@@ -46,15 +46,15 @@ pub fn main() {
         .expect("launch failed");
 }
 
-fn build_ui() -> impl Widget<CanvasData> {
+fn build_ui() -> impl Widget<CanvasState> {
     let history_buttons =
         Flex::row()
             .cross_axis_alignment(CrossAxisAlignment::Center)
             .with_child(Button::new("Undo").on_click(
-                |_ctx: &mut EventCtx, data: &mut CanvasData, _env: &Env| data.perform_undo(),
+                |_ctx: &mut EventCtx, data: &mut CanvasState, _env: &Env| data.perform_undo(),
             ))
             .with_child(Button::new("Redo").on_click(
-                |_ctx: &mut EventCtx, data: &mut CanvasData, _env: &Env| data.perform_redo(),
+                |_ctx: &mut EventCtx, data: &mut CanvasState, _env: &Env| data.perform_redo(),
             ));
 
     let stlt = FileSpec::new("Stiletto notebook", &["stlt"]);
@@ -100,13 +100,13 @@ fn build_ui() -> impl Widget<CanvasData> {
 
 struct Delegate;
 
-impl AppDelegate<CanvasData> for Delegate {
+impl AppDelegate<CanvasState> for Delegate {
     fn command(
         &mut self,
         _ctx: &mut DelegateCtx,
         _target: Target,
         cmd: &Command,
-        data: &mut CanvasData,
+        data: &mut CanvasState,
         _env: &Env,
     ) -> bool {
         use std::fs::File;
diff --git a/src/widget.rs b/src/widget.rs
index 90bf939..180eca1 100644
--- a/src/widget.rs
+++ b/src/widget.rs
@@ -26,12 +26,12 @@ use druid::widget::prelude::*;
 use druid::{Color, Data, Env, Event};
 
 #[derive(Clone, Data)]
-pub struct CanvasData {
+pub struct CanvasState {
     pub current_element: Option<CanvasElement>,
     pub elements: VersionedCanvas,
 }
 
-impl CanvasData {
+impl CanvasState {
     pub fn is_drawing(&self) -> bool {
         self.current_element.is_some()
     }
@@ -62,8 +62,8 @@ impl CanvasData {
 
 pub struct CanvasWidget;
 
-impl Widget<CanvasData> for CanvasWidget {
-    fn event(&mut self, _ctx: &mut EventCtx, event: &Event, data: &mut CanvasData, _env: &Env) {
+impl Widget<CanvasState> for CanvasWidget {
+    fn event(&mut self, _ctx: &mut EventCtx, event: &Event, data: &mut CanvasState, _env: &Env) {
         match event {
             Event::MouseDown(mouse_event) => {
                 let mut kurbo_path = BezPath::new();
@@ -101,7 +101,7 @@ impl Widget<CanvasData> for CanvasWidget {
         &mut self,
         _ctx: &mut LifeCycleCtx,
         _event: &LifeCycle,
-        _data: &CanvasData,
+        _data: &CanvasState,
         _env: &Env,
     ) {
     }
@@ -109,8 +109,8 @@ impl Widget<CanvasData> for CanvasWidget {
     fn update(
         &mut self,
         ctx: &mut UpdateCtx,
-        old_data: &CanvasData,
-        data: &CanvasData,
+        old_data: &CanvasState,
+        data: &CanvasState,
         _env: &Env,
     ) {
         // the current_element is moved to the elements array, no need to repaint
@@ -130,7 +130,7 @@ impl Widget<CanvasData> for CanvasWidget {
         &mut self,
         _layout_ctx: &mut LayoutCtx,
         bc: &BoxConstraints,
-        _data: &CanvasData,
+        _data: &CanvasState,
         _env: &Env,
     ) -> Size {
         // BoxConstraints are passed by the parent widget.
@@ -145,7 +145,7 @@ impl Widget<CanvasData> for CanvasWidget {
     // The paint method gets called last, after an event flow.
     // It goes event -> update -> layout -> paint, and each method can influence the next.
     // Basically, anything that changes the appearance of a widget causes a paint.
-    fn paint(&mut self, ctx: &mut PaintCtx, data: &CanvasData, _env: &Env) {
+    fn paint(&mut self, ctx: &mut PaintCtx, data: &CanvasState, _env: &Env) {
         // (ctx.size() returns the size of the layout rect we're painting in)
         let size = ctx.size();
         let rect = size.to_rect();