refactor(bar): use native apis for positioning

This commit replaces almost all uses of the egui Viewport API for bar
window positioning with calls to SetWindowPos via komorebi_client's
Window struct.

This seems to play much more smoothly with multi-monitor setups where
each monitor has a different scaling factor, opening the door for
multiple instances of komorebi-bar.exe to run against multiple monitors.

As a result of this change, the "viewport" configuration option has been
renamed to "position" and doc strings have been changed to remove the
reference to the egui crate docs. Similarly, "viewport.position" and
"viewport.inner_size" have been renamed to "position.start" and
"position.end" respectively. Backwards-compatibility aliases have been
included for all renames.

komorebi-bar/src/config.rs

@@ -7,13 +7,15 @@ use komorebi_client::Rect;
 use schemars::JsonSchema;
 use serde::Deserialize;
 use serde::Serialize;
+use std::collections::HashMap;
 use std::path::PathBuf;
 
 #[derive(Clone, Debug, Serialize, Deserialize, JsonSchema)]
 /// The `komorebi.bar.json` configuration file reference for `v0.1.30`
 pub struct KomobarConfig {
-    /// Viewport options (see: https://docs.rs/egui/latest/egui/viewport/struct.ViewportBuilder.html)
-    pub viewport: Option<ViewportConfig>,
+    /// Bar positioning options
+    #[serde(alias = "viewport")]
+    pub position: Option<PositionConfig>,
     /// Frame options (see: https://docs.rs/egui/latest/egui/containers/struct.Frame.html)
     pub frame: Option<FrameConfig>,
     /// Monitor options
@@ -32,12 +34,43 @@ pub struct KomobarConfig {
     pub right_widgets: Vec<WidgetConfig>,
 }
 
+impl KomobarConfig {
+    pub fn aliases(raw: &str) {
+        let mut map = HashMap::new();
+        map.insert("position", ["viewport"]);
+        map.insert("end", ["inner_frame"]);
+
+        let mut display = false;
+
+        for aliases in map.values() {
+            for a in aliases {
+                if raw.contains(a) {
+                    display = true;
+                }
+            }
+        }
+
+        if display {
+            println!("\nYour bar configuration file contains some options that have been renamed or deprecated:\n");
+            for (canonical, aliases) in map {
+                for alias in aliases {
+                    if raw.contains(alias) {
+                        println!(r#""{alias}" is now "{canonical}""#);
+                    }
+                }
+            }
+        }
+    }
+}
+
 #[derive(Clone, Debug, Serialize, Deserialize, JsonSchema)]
-pub struct ViewportConfig {
+pub struct PositionConfig {
     /// The desired starting position of the bar (0,0 = top left of the screen)
-    pub position: Option<Position>,
+    #[serde(alias = "position")]
+    pub start: Option<Position>,
     /// The desired size of the bar from the starting position (usually monitor width x desired height)
-    pub inner_size: Option<Position>,
+    #[serde(alias = "inner_size")]
+    pub end: Option<Position>,
 }
 
 #[derive(Clone, Debug, Serialize, Deserialize, JsonSchema)]