feat(windows): Customizable title bar style (#3765)

__Issue:__ There are several quirks on Windows with the 'undecorated' Windows style - issues like:
- #3730 
- #3071 
- #3063 

__Fix:__ These can be deal-breakers for use as a daily editor, so until we have those fixed for the 'undecorated' Windows, change the default setting to use the native titlebar. 

This introduces a new setting - `window.titleBarStyle` that can be `"native"` or `"custom"`. The `"custom"`  titlebar looks nicer, because it is themed and custom rendered, however it has the above quirks. On Windows, change the default to `"native"`.

In addition, this pushes up the configuration loading sooner in the startup cycle, so we can pick up configuration settings like `"window.titleBarStyle"` prior to opening the window.

__Todo:__
- [x] Fix margin on Windows, based on whether we are using the decorated window or not
- [x] Test OSX
- [x] Test Windows (both settings)
- [x] Test on Linux (both settings)

CHANGES_CURRENT.md

@@ -8,6 +8,10 @@
 - #3718 - Completion: Add `editor.suggest.itemsToShow` setting (fixes #3712)
 - #3736 - Search: add default keys to go to next / previous search result (fixes #3713)
 - #3733 - Quick Open: Add bindings to open in splits, not current buffer.
+- #3765 - UX: Add `"window.titleBarStyle"` configuration setting
+
+> __BREAKING:__ On Windows, the default setting is to use the `"native"` title bar.
+> Set `"window.titleBarStyle": "custom"` to keep the previous behavior.
 
 ### Bug Fixes
 

bench/lib/Helpers.re

@@ -39,6 +39,7 @@ let simpleState = {
       ~titlebarHeight=0.,
       ~getZoom=() => 1.0,
       ~setZoom=_zoom => (),
+      ~useNativeTitleBar=true,
     );
 
   Reducer.reduce(

docs/docs/configuration/settings.md

@@ -181,6 +181,8 @@ The configuration file, `configuration.json` is in the Oni2 directory, whose loc
 
 - `window.menuBarVisibility` __(_"visible" | "hidden"_ default: `"visible"`)__ - Controls the visibility of the menu bar.
 
+- `window.titleBarStyle` __(_"native" | "custom"_ default: `"native"` on Windows, `"custom"` otherwise)__ - Controls whether the titlebar is custom-rendered.
+
 - `oni.layout.showLayoutTabs` __(_"always"|"smart"|"never"_ default: `"smart"`)__ - Controls the display of layout tabs. `"smart"` will only show the tabs if there's more than one.
 
 - `oni.layout.layoutTabPosition` __(_"top"|"bottom"_ default: `"bottom"`)__ - Controls the position of the layout tabs.

integration_test/lib/Oni_IntegrationTestLib.re

@@ -190,6 +190,7 @@ let runTest =
         ~titlebarHeight=0.,
         ~setZoom,
         ~getZoom,
+        ~useNativeTitleBar=true,
       ),
     );
 

src/Feature/Configuration/Feature_Configuration.rei

@@ -11,6 +11,8 @@ module ConfigurationLoader: {
   let none: t;
 
   let file: FpExp.t(FpExp.absolute) => t;
+
+  let loadImmediate: t => result(Config.Settings.t, string);
 };
 
 let initial:

src/Feature/Configuration/GlobalConfiguration.re

@@ -46,6 +46,16 @@ module Decoders = {
            ),
       ),
     ]);
+
+  let titleBarStyle: decoder([ | `Native | `Custom]) =
+    string
+    |> map(String.lowercase_ascii)
+    |> map(
+         fun
+         | "native" => `Native
+         | "custom" => `Custom
+         | _ => `Custom,
+       );
 };
 
 module Encoders = {
@@ -57,6 +67,11 @@ module Encoders = {
       | `None => string("none")
       | `Inline => string("inline")
       };
+
+  let titleBarStyle: encoder([ | `Native | `Custom]) =
+    fun
+    | `Native => string("native")
+    | `Custom => string("custom");
 };
 
 module Codecs = {
@@ -292,6 +307,24 @@ module Search = {
   let followSymlinks = setting("search.followSymlinks", bool, ~default=true);
 };
 
+module Window = {
+  // On Windows, default the titlebar style to native, due to various bugs around the custom-rendered window, like:
+  // #3730 - Keyboard shortcuts for window movement broken
+  // #3071 - Window has no shadow on Windows
+  // #3063 - Part of onivim fullscreen is visible on second monitor
+  let defaultTitleBarStyle =
+    switch (Revery.Environment.os) {
+    | Windows(_) => `Native
+    | _ => `Custom
+    };
+  let titleBarStyle =
+    setting(
+      "window.titleBarStyle",
+      custom(~decode=Decoders.titleBarStyle, ~encode=Encoders.titleBarStyle),
+      ~default=defaultTitleBarStyle,
+    );
+};
+
 module Workbench = {
   let activityBarVisible =
     setting("workbench.activityBar.visible", bool, ~default=true);
@@ -319,6 +352,7 @@ let contributions = [
   Editor.snippetSuggestions.spec,
   Files.exclude.spec,
   Explorer.autoReveal.spec,
+  Window.titleBarStyle.spec,
   Workbench.activityBarVisible.spec,
   Workbench.editorShowTabs.spec,
   Workbench.editorEnablePreview.spec,

src/Feature/TitleBar/Feature_TitleBar.re

@@ -15,6 +15,17 @@ type msg =
   | WindowCloseClicked
   | TitleDoubleClicked;
 
+type model = {
+  // We need to store this, as opposed to pulling it
+  // from config, because we need to respect the value
+  // used on initialization.
+  useNativeTitleBar: bool,
+};
+
+let isNative = ({useNativeTitleBar, _}) => useNativeTitleBar;
+
+let initial = (~useNativeTitleBar) => {useNativeTitleBar: useNativeTitleBar};
+
 module Log = (val Log.withNamespace("Oni2.Feature.TitleBar"));
 
 module Internal = {
@@ -155,7 +166,7 @@ type outmsg =
   | Nothing
   | Effect(Isolinear.Effect.t(msg));
 
-let update = (~maximize, ~minimize, ~restore, ~close, msg) => {
+let update = (~maximize, ~minimize, ~restore, ~close, msg, model) => {
   let internalDoubleClickEffect =
     Isolinear.Effect.create(~name="window.doubleClick", () => {
       switch (Internal.getTitleDoubleClickBehavior()) {
@@ -174,11 +185,11 @@ let update = (~maximize, ~minimize, ~restore, ~close, msg) => {
     Isolinear.Effect.create(~name="window.restore", () => restore());
 
   switch (msg) {
-  | TitleDoubleClicked => Effect(internalDoubleClickEffect)
-  | WindowCloseClicked => Effect(internalWindowCloseEffect)
-  | WindowMaximizeClicked => Effect(internalWindowMaximizeEffect)
-  | WindowRestoreClicked => Effect(internalWindowRestoreEffect)
-  | WindowMinimizeClicked => Effect(internalWindowMinimizeEffect)
+  | TitleDoubleClicked => (model, Effect(internalDoubleClickEffect))
+  | WindowCloseClicked => (model, Effect(internalWindowCloseEffect))
+  | WindowMaximizeClicked => (model, Effect(internalWindowMaximizeEffect))
+  | WindowRestoreClicked => (model, Effect(internalWindowRestoreEffect))
+  | WindowMinimizeClicked => (model, Effect(internalWindowMinimizeEffect))
   };
 };
 
@@ -537,11 +548,13 @@ module View = {
         ~theme,
         ~font: UiFont.t,
         ~height,
+        ~model,
         (),
       ) => {
     let title =
       title(~activeBuffer, ~workspaceRoot, ~workspaceDirectory, ~config);
     switch (Revery.Environment.os) {
+    | Mac(_) when isNative(model) => React.empty
     | Mac({major, _}) =>
       <Mac
         isFocused
@@ -555,6 +568,7 @@ module View = {
         height
         majorVersion=major
       />
+    | Windows(_) when isNative(model) => menuBar
     | Windows(_) =>
       <Windows
         menuBar

src/Feature/TitleBar/Feature_TitleBar.rei

@@ -8,6 +8,12 @@ type windowDisplayMode =
   | Maximized
   | Fullscreen;
 
+type model;
+
+let initial: (~useNativeTitleBar: bool) => model;
+
+let isNative: model => bool;
+
 [@deriving show]
 type msg;
 
@@ -32,9 +38,10 @@ let update:
     ~minimize: unit => unit,
     ~restore: unit => unit,
     ~close: unit => unit,
-    msg
+    msg,
+    model
   ) =>
-  outmsg;
+  (model, outmsg);
 
 // VIEW
 
@@ -54,6 +61,7 @@ module View: {
       ~theme: ColorTheme.Colors.t,
       ~font: UiFont.t,
       ~height: float,
+      ~model: model,
       unit
     ) =>
     Revery.UI.element;

src/Model/State.re

@@ -493,6 +493,7 @@ type t = {
   modal: option(Feature_Modals.model),
   snippets: Feature_Snippets.model,
   textContentProviders: list((int, string)),
+  titleBar: Feature_TitleBar.model,
   vim: Feature_Vim.model,
   zoom: Feature_Zoom.model,
   autoUpdate: Feature_AutoUpdate.model,
@@ -516,6 +517,7 @@ let initial =
       ~titlebarHeight,
       ~getZoom,
       ~setZoom,
+      ~useNativeTitleBar,
     ) => {
   let config =
     Feature_Configuration.initial(
@@ -668,6 +670,7 @@ let initial =
     quickOpen: Feature_QuickOpen.initial,
     snippets: Feature_Snippets.initial,
     terminals: Feature_Terminal.initial,
+    titleBar: Feature_TitleBar.initial(~useNativeTitleBar),
     textContentProviders: [],
     vim: Feature_Vim.initial,
     zoom: Feature_Zoom.initial(~getZoom, ~setZoom),

src/Store/Features.re

@@ -2542,21 +2542,25 @@ let update =
     );
 
   | TitleBar(titleBarMsg) =>
+    let (titleBar', outmsg) =
+      Feature_TitleBar.update(
+        ~maximize,
+        ~minimize,
+        ~close,
+        ~restore,
+        titleBarMsg,
+        state.titleBar,
+      );
     let eff =
-      switch (
-        Feature_TitleBar.update(
-          ~maximize,
-          ~minimize,
-          ~close,
-          ~restore,
-          titleBarMsg,
-        )
-      ) {
+      switch (outmsg) {
       | Feature_TitleBar.Effect(effect) => effect
       | Feature_TitleBar.Nothing => Isolinear.Effect.none
       };
 
-    (state, eff |> Isolinear.Effect.map(msg => TitleBar(msg)));
+    (
+      {...state, titleBar: titleBar'},
+      eff |> Isolinear.Effect.map(msg => TitleBar(msg)),
+    );
 
   | ExtensionBufferUpdateQueued({triggerKey}) =>
     let maybeBuffer = Selectors.getActiveBuffer(state);

src/UI/Root.re

@@ -20,7 +20,7 @@ module Constants = {
 module Styles = {
   open Style;
 
-  let root = (theme, windowDisplayMode) => {
+  let root = (~nativeTitleBar, theme, windowDisplayMode) => {
     let style =
       ref([
         backgroundColor(Colors.Editor.background.from(theme)),
@@ -33,7 +33,9 @@ module Styles = {
         justifyContent(`Center),
         alignItems(`Stretch),
       ]);
-    if (Revery.Environment.isWindows && windowDisplayMode == State.Maximized) {
+    if (Revery.Environment.isWindows
+        && windowDisplayMode == State.Maximized
+        && !nativeTitleBar) {
       style := [margin(6), ...style^];
     };
     style^;
@@ -252,7 +254,9 @@ let make = (~dispatch, ~state: State.t, ()) => {
   // Correct for zoom in title bar height
   let titlebarHeight = state.titlebarHeight /. zoom;
 
-  <View style={Styles.root(theme, state.windowDisplayMode)}>
+  let nativeTitleBar = Feature_TitleBar.isNative(state.titleBar);
+
+  <View style={Styles.root(~nativeTitleBar, theme, state.windowDisplayMode)}>
     <Feature_TitleBar.View
       menuBar=menuBarElement
       activeBuffer=maybeActiveBuffer
@@ -267,6 +271,7 @@ let make = (~dispatch, ~state: State.t, ()) => {
       dispatch=titleDispatch
       registrationDispatch
       height=titlebarHeight
+      model={state.titleBar}
     />
     <View style=Styles.workspace>
       <View style=Styles.surface>