From 57ef9e5e0eb530ce1601a127a9140893361471df Mon Sep 17 00:00:00 2001
From: Enrico Lumetti <enrico.lumetti@gmail.com>
Date: Thu, 25 Feb 2021 10:15:10 +0100
Subject: [PATCH] Add file format version

---
 src/lib.rs           | 2 ++
 src/main.rs          | 2 +-
 src/widget/canvas.rs | 2 ++
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/lib.rs b/src/lib.rs
index 2e325ab..8376545 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -30,5 +30,7 @@ pub mod commands {
 
 #[derive(Serialize, Deserialize, Debug)]
 pub struct DocumentSnapshot {
+    pub format_version_major: u16,
+    pub format_version_minor: u16,
     pub canvas_elements: Vec<canvas::CanvasElement>,
 }
diff --git a/src/main.rs b/src/main.rs
index 162fa40..bc5a27d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -187,7 +187,7 @@ impl AppDelegate<StilettoState> for Delegate {
                     data.canvas.set_from_snapshot(document_snapshot);
                     info!("Loaded file {}", file_info.path().display());
                 } else {
-                    warn!("didn't work: {:?}", res_snapshot.err());
+                    warn!("Error while loading {}: {:?}", file_info.path().display(), res_snapshot.err());
                 }
             }
             return Handled::Yes;
diff --git a/src/widget/canvas.rs b/src/widget/canvas.rs
index 242d601..67b06e0 100644
--- a/src/widget/canvas.rs
+++ b/src/widget/canvas.rs
@@ -45,6 +45,8 @@ impl CanvasState {
 
     pub fn get_document_snapshot(&self) -> DocumentSnapshot {
         DocumentSnapshot {
+            format_version_major: 0,
+            format_version_minor: 1,
             canvas_elements: self
                 .versioned_canvas
                 .get()