Replace GTK headerbar with custom implementation

This avoids D&D controllers clash and allows to freely customize how maximize, minimize and close buttons work (differently for e.g. web application) and where are they placed

css/styles.css

@@ -18,9 +18,6 @@ radio {
 .gtk402 .osd trough highlight {
   border-color: inherit;
 }
-.osd headerbar {
-  background: transparent;
-}
 .osdheaderbar button {
   border: transparent;
 }

src/app.js

@@ -27,7 +27,7 @@ class ClapperApp extends AppBase
         window.isClapperApp = true;
         window.add_css_class('nobackground');
 
-        const clapperWidget = new Widget(window);
+        const clapperWidget = new Widget();
         window.set_child(clapperWidget);
 
         const dummyHeaderbar = new Gtk.HeaderBar({

src/headerbar.js

@@ -4,11 +4,15 @@ const { HeaderBarBase } = imports.src.headerbarBase;
 var HeaderBar = GObject.registerClass(
 class ClapperHeaderBar extends HeaderBarBase
 {
-    _init(window)
+    _init()
     {
-        super._init(window);
+        super._init();
+        this.add_css_class('osdheaderbar');
+    }
 
-        this.title_widget.visible = false;
+    _onWindowButtonActivate(action)
+    {
+        this.activate_action(action, null);
     }
 
     _onFloatButtonClicked()

src/headerbarBase.js

@@ -1,95 +1,193 @@
-const { GObject, Gtk, Pango } = imports.gi;
+const { GObject, Gtk } = imports.gi;
 const Misc = imports.src.misc;
 
 var HeaderBarBase = GObject.registerClass(
-class ClapperHeaderBarBase extends Gtk.HeaderBar
+class ClapperHeaderBarBase extends Gtk.Box
 {
-    _init(window)
+    _init()
     {
         super._init({
             can_focus: false,
+            orientation: Gtk.Orientation.HORIZONTAL,
+            spacing: 6,
+            margin_top: 6,
+            margin_start: 6,
+            margin_end: 6,
         });
 
+        this.isMaximized = false;
+        this.isMenuOnLeft = true;
+
         const clapperPath = Misc.getClapperPath();
         const uiBuilder = Gtk.Builder.new_from_file(
             `${clapperPath}/ui/clapper.ui`
         );
 
-        this.add_css_class('noborder');
-        this.set_title_widget(this._createWidgetForWindow(window));
+        this.menuWidget = new Gtk.Box({
+            orientation: Gtk.Orientation.HORIZONTAL,
+            valign: Gtk.Align.CENTER,
+            spacing: 6,
+        });
 
-        const mainMenuButton = new Gtk.MenuButton({
+        this.menuButton = new Gtk.MenuButton({
             icon_name: 'open-menu-symbolic',
             valign: Gtk.Align.CENTER,
         });
         const mainMenuModel = uiBuilder.get_object('mainMenu');
         const mainMenuPopover = new HeaderBarPopover(mainMenuModel);
-        mainMenuButton.set_popover(mainMenuPopover);
-        mainMenuButton.add_css_class('circular');
-        this.pack_start(mainMenuButton);
+        this.menuButton.set_popover(mainMenuPopover);
+        this.menuButton.add_css_class('circular');
+        this.menuWidget.append(this.menuButton);
 
-        const buttonsBox = new Gtk.Box({
+        this.extraButtonsBox = new Gtk.Box({
             orientation: Gtk.Orientation.HORIZONTAL,
             valign: Gtk.Align.CENTER,
         });
-        buttonsBox.add_css_class('linked');
+        this.extraButtonsBox.add_css_class('linked');
 
         const floatButton = new Gtk.Button({
             icon_name: 'go-bottom-symbolic',
         });
         floatButton.add_css_class('circular');
-        floatButton.connect('clicked', this._onFloatButtonClicked.bind(this));
-        buttonsBox.append(floatButton);
+        floatButton.connect('clicked',
+            this._onFloatButtonClicked.bind(this)
+        );
+        this.extraButtonsBox.append(floatButton);
 
         const fullscreenButton = new Gtk.Button({
             icon_name: 'view-fullscreen-symbolic',
         });
         fullscreenButton.add_css_class('circular');
-        fullscreenButton.connect('clicked', this._onFullscreenButtonClicked.bind(this));
+        fullscreenButton.connect('clicked',
+            this._onFullscreenButtonClicked.bind(this)
+        );
+        this.extraButtonsBox.append(fullscreenButton);
+        this.menuWidget.append(this.extraButtonsBox);
 
-        buttonsBox.append(fullscreenButton);
-        this.pack_start(buttonsBox);
+        this.spacerWidget = new Gtk.Box({
+            hexpand: true,
+        });
+
+        this.minimizeWidget = this._getWindowButton('minimize');
+        this.maximizeWidget = this._getWindowButton('maximize');
+        this.closeWidget = this._getWindowButton('close');
+
+        const gtkSettings = Gtk.Settings.get_default();
+        this._onLayoutUpdate(gtkSettings);
+
+        gtkSettings.connect(
+            'notify::gtk-decoration-layout',
+            this._onLayoutUpdate.bind(this)
+        );
     }
 
-    updateHeaderBar(title, subtitle)
+    setMenuOnLeft(isOnLeft)
     {
-        this.titleLabel.label = title;
-        this.subtitleLabel.visible = (subtitle !== null);
+        if(this.isMenuOnLeft === isOnLeft)
+            return;
 
-        if(subtitle)
-            this.subtitleLabel.label = subtitle;
+        if(isOnLeft) {
+            this.menuWidget.reorder_child_after(
+                this.extraButtonsBox, this.menuButton
+            );
+        }
+        else {
+            this.menuWidget.reorder_child_after(
+                this.menuButton, this.extraButtonsBox
+            );
         }
 
-    _createWidgetForWindow(window)
+        this.isMenuOnLeft = isOnLeft;
+    }
+
+    setMaximized(isMaximized)
     {
-        const box = new Gtk.Box({
-            orientation: Gtk.Orientation.VERTICAL,
+        if(this.isMaximized === isMaximized)
+            return;
+
+        this.maximizeWidget.icon_name = (isMaximized)
+            ? 'window-restore-symbolic'
+            : 'window-maximize-symbolic';
+
+        this.isMaximized = isMaximized;
+    }
+
+    _onLayoutUpdate(gtkSettings)
+    {
+        const gtkLayout = gtkSettings.gtk_decoration_layout;
+
+        this._replaceButtons(gtkLayout);
+    }
+
+    _replaceButtons(gtkLayout)
+    {
+        const modLayout = gtkLayout.replace(':', ',spacer,');
+        const layoutArr = modLayout.split(',');
+
+        let lastWidget = null;
+        let showMinimize = false;
+        let showMaximize = false;
+        let showClose = false;
+        let spacerAdded = false;
+
+        for(let name of layoutArr) {
+            const widget = this[`${name}Widget`];
+            if(!widget) continue;
+
+            if(!widget.parent)
+                this.append(widget);
+            else
+                this.reorder_child_after(widget, lastWidget);
+
+            switch(name) {
+                case 'spacer':
+                    spacerAdded = true;
+                    break;
+                case 'minimize':
+                    showMinimize = true;
+                    break;
+                case 'maximize':
+                    showMaximize = true;
+                    break;
+                case 'close':
+                    showClose = true;
+                    break;
+                case 'menu':
+                    this.setMenuOnLeft(!spacerAdded);
+                    break;
+                default:
+                    break;
+            }
+
+            lastWidget = widget;
+        }
+
+        this.minimizeWidget.visible = showMinimize;
+        this.maximizeWidget.visible = showMaximize;
+        this.closeWidget.visible = showClose;
+    }
+
+    _getWindowButton(name)
+    {
+        const button = new Gtk.Button({
+            icon_name: `window-${name}-symbolic`,
             valign: Gtk.Align.CENTER,
         });
+        button.add_css_class('circular');
 
-        this.titleLabel = new Gtk.Label({
-            halign: Gtk.Align.CENTER,
-            single_line_mode: true,
-            ellipsize: Pango.EllipsizeMode.END,
-            width_chars: 5,
-        });
-        this.titleLabel.add_css_class('title');
-        this.titleLabel.set_parent(box);
+        const action = (name === 'maximize')
+            ? 'window.toggle-maximized'
+            : 'window.' + name;
 
-        window.bind_property('title', this.titleLabel, 'label',
-            GObject.BindingFlags.SYNC_CREATE
+        button.connect('clicked',
+            this._onWindowButtonActivate.bind(this, action)
         );
 
-        this.subtitleLabel = new Gtk.Label({
-            halign: Gtk.Align.CENTER,
-            single_line_mode: true,
-            ellipsize: Pango.EllipsizeMode.END,
-        });
-        this.subtitleLabel.add_css_class('subtitle');
-        this.subtitleLabel.set_parent(box);
-        this.subtitleLabel.visible = false;
+        return button;
+    }
 
-        return box;
+    _onWindowButtonActivate(action)
+    {
     }
 
     _onFloatButtonClicked()

src/revealers.js

@@ -91,7 +91,7 @@ class ClapperCustomRevealer extends Gtk.Revealer
 var RevealerTop = GObject.registerClass(
 class ClapperRevealerTop extends CustomRevealer
 {
-    _init(window)
+    _init()
     {
         super._init({
             transition_duration: REVEAL_TIME,
@@ -133,7 +133,7 @@ class ClapperRevealerTop extends CustomRevealer
         revealerBox.add_css_class('osd');
         revealerBox.add_css_class('reavealertop');
 
-        this.headerBar = new HeaderBar(window);
+        this.headerBar = new HeaderBar();
         revealerBox.append(this.headerBar);
 
         this.revealerGrid = new Gtk.Grid({

src/widget.js

@@ -12,7 +12,7 @@ const { settings } = Misc;
 var Widget = GObject.registerClass(
 class ClapperWidget extends Gtk.Grid
 {
-    _init(window)
+    _init()
     {
         super._init();
 
@@ -30,7 +30,7 @@ class ClapperWidget extends Gtk.Grid
         this.needsTracksUpdate = true;
 
         this.overlay = new Gtk.Overlay();
-        this.revealerTop = new Revealers.RevealerTop(window);
+        this.revealerTop = new Revealers.RevealerTop();
         this.revealerBottom = new Revealers.RevealerBottom();
         this.controls = new Controls();
 
@@ -109,6 +109,7 @@ class ClapperWidget extends Gtk.Grid
         if(this.fullscreenMode === isFullscreen)
             return;
 
+        debug('changing fullscreen mode');
         this.fullscreenMode = isFullscreen;
 
         const root = this.get_root();
@@ -132,6 +133,8 @@ class ClapperWidget extends Gtk.Grid
             this.player.playOnFullscreen = false;
             this.player.play();
         }
+
+        debug(`interface in fullscreen mode: ${isFullscreen}`);
     }
 
     _saveWindowSize(size)
@@ -160,8 +163,8 @@ class ClapperWidget extends Gtk.Grid
         if(!mediaInfo)
             return GLib.SOURCE_REMOVE;
 
-        /* Set titlebar media title and path */
-        this.updateTitles(mediaInfo);
+        /* Set titlebar media title */
+        this.updateTitle(mediaInfo);
 
         /* Show/hide position scale on LIVE */
         const isLive = mediaInfo.is_live();
@@ -270,25 +273,18 @@ class ClapperWidget extends Gtk.Grid
         return GLib.SOURCE_REMOVE;
     }
 
-    updateTitles(mediaInfo)
+    updateTitle(mediaInfo)
     {
         let title = mediaInfo.get_title();
-        let subtitle = this.player.playlistWidget.getActiveFilename();
 
         if(!title) {
+            const subtitle = this.player.playlistWidget.getActiveFilename();
+
             title = (subtitle.includes('.'))
                 ? subtitle.split('.').slice(0, -1).join('.')
                 : subtitle;
-
-            subtitle = null;
         }
 
-        const root = this.get_root();
-        const headerbar = root.get_titlebar();
-
-        if(headerbar && headerbar.updateHeaderBar)
-            headerbar.updateHeaderBar(title, subtitle);
-
         this.revealerTop.setMediaTitle(title);
     }
 
@@ -512,15 +508,16 @@ class ClapperWidget extends Gtk.Grid
 
     _onStateNotify(toplevel)
     {
+        const isMaximized = Boolean(
+            toplevel.state & Gdk.ToplevelState.MAXIMIZED
+        );
         const isFullscreen = Boolean(
             toplevel.state & Gdk.ToplevelState.FULLSCREEN
         );
+        const headerBar = this.revealerTop.headerBar;
 
-        if(this.fullscreenMode === isFullscreen)
-            return;
-
+        headerBar.setMaximized(isMaximized);
         this.setFullscreenMode(isFullscreen);
-        debug(`interface in fullscreen mode: ${isFullscreen}`);
     }
 
     _onLayoutUpdate(surface, width, height)