1 files changed, 179 insertions, 0 deletions
diff --git a/extensions/vertical-workspaces/workspaceAnimation.js b/extensions/vertical-workspaces/workspaceAnimation.js
new file mode 100644
index 0000000..40f61b8
--- /dev/null
+++ b/extensions/vertical-workspaces/workspaceAnimation.js
@@ -0,0 +1,179 @@
+/**
+ * Vertical Workspaces
+ * workspacesAnimation.js
+ * 
+ * @author     GdH <G-dH@github.com>
+ * @copyright  2022 - 2023
+ * @license    GPL-3.0
+ *
+ */
+
+'use strict';
+
+const { St } = imports.gi;
+
+const Main = imports.ui.main;
+const WorkspaceSwitcherPopup = imports.ui.workspaceSwitcherPopup;
+const WorkspaceAnimation = imports.ui.workspaceAnimation;
+const Me = imports.misc.extensionUtils.getCurrentExtension();
+const _Util = Me.imports.util;
+
+// touching module properties defined by const/let for the first time returns undefined in GS 42, so we touch it here before we use it
+WorkspaceAnimation.MonitorGroup;
+
+let _origBaseDistance;
+let _wsAnimationSwipeBeginId;
+let _wsAnimationSwipeEndId;
+let _overrides;
+let opt;
+
+function update(reset = false) {
+    if (_overrides) {
+        _overrides.removeAll();
+    }
+
+    opt = Me.imports.settings.opt;
+    if (reset || !opt.STATIC_WS_SWITCHER_BG) {
+        _connectWsAnimationSwipeTracker(true);
+        _overrideMonitorGroupProperty(true);
+        _overrides = null;
+        opt = null;
+        return;
+    }
+
+    _overrides = new _Util.Overrides();
+    _connectWsAnimationSwipeTracker();
+    _overrideMonitorGroupProperty();
+
+    _overrides.addInjection('WorkspaceAnimationMonitorGroup', WorkspaceAnimation.MonitorGroup.prototype, MonitorGroupInjections);
+}
+
+// remove spacing between workspaces during transition to remove flashing wallpaper between workspaces with maximized windows
+function _overrideMonitorGroupProperty(reset = false) {
+    if (!_origBaseDistance)
+        _origBaseDistance = Object.getOwnPropertyDescriptor(WorkspaceAnimation.MonitorGroup.prototype,'baseDistance').get;
+
+    let getter;
+    if (reset) {
+        if (_origBaseDistance)
+            getter = { get: _origBaseDistance };
+    } else {
+        getter = {
+            get: function () {
+                //const spacing = 100 * St.ThemeContext.get_for_stage(global.stage).scale_factor;
+                const spacing = 0;
+                if (global.workspace_manager.layout_rows === -1)
+                    return this._monitor.height + spacing + (opt.PANEL_MODE ? Main.panel.height : 0); // compensation for hidden panel
+                else
+                    return this._monitor.width + spacing;
+            }
+        }
+    }
+
+    if (getter)
+        Object.defineProperty(WorkspaceAnimation.MonitorGroup.prototype, "baseDistance", getter);
+}
+
+const MonitorGroupInjections = {
+    _init: function() {
+        // we have two options to implement static bg feature
+        // one is adding background to monitorGroup
+        // but this one has disadvantage - sticky windows will be always on top of animated windows
+        // which is bad for conky, for example, that window should be always below
+        /*this._bgManager = new Background.BackgroundManager({
+            container: this,
+            monitorIndex: this._monitor.index,
+            controlPosition: false,
+        });*/
+
+        // the second option is to make background of the monitorGroup transparent so the real desktop content will stay visible,
+        // hide windows that should be animated and keep only sticky windows
+        // we can keep certain sticky windows bellow and also extensions like DING (icons on desktop) will stay visible
+        this.set_style('background-color: transparent;');
+        // stickyGroup holds the Always on Visible Workspace windows to keep them static and above other windows during animation
+        const stickyGroup = this.get_children()[1];
+        stickyGroup._windowRecords.forEach((r, index) => {
+            const metaWin = r.windowActor.metaWindow;
+            // conky is sticky but should never get above other windows during ws animation
+            // so we hide it from the overlay group, we will see the original if not covered by other windows
+            if (metaWin.wm_class == 'conky') {
+                r.clone.opacity = 0;
+            }
+        })
+        this._hiddenWindows = [];
+        // remove (hide) background wallpaper from the animation, we will see the original one
+        this._workspaceGroups.forEach(w => w._background.opacity = 0);
+        // hide (scale to 0) all non-sticky windows, their clones will be animated
+        global.get_window_actors().forEach(actor => {
+            const metaWin = actor.metaWindow;
+            if (metaWin?.get_monitor() === this._monitor.index && !(metaWin?.wm_class == 'conky' && metaWin?.is_on_all_workspaces())) { //* && !w.is_on_all_workspaces()*/) {
+                // hide original window. we cannot use opacity since it also affects clones.
+                // scaling them to 0 works well
+                actor.scale_x = 0;
+                this._hiddenWindows.push(actor);
+            }
+        });
+
+        // restore all hidden windows at the end of animation
+        // todo - actors removed during transition need to be removed from the list  to avoid access to destroyed actor
+        this.connect('destroy', () =>{
+            this._hiddenWindows.forEach(actor => {
+                actor.scale_x = 1;
+            });
+        });
+    }
+}
+
+
+// ------ connect Ws Animation Swipe Tracker --------------
+
+function _connectWsAnimationSwipeTracker(reset = false) {
+    if (reset) {
+        if (_wsAnimationSwipeBeginId) {
+            Main.wm._workspaceAnimation._swipeTracker.disconnect(_wsAnimationSwipeBeginId);
+            _wsAnimationSwipeBeginId = 0;
+        }
+        if (_wsAnimationSwipeEndId) {
+            Main.wm._workspaceAnimation._swipeTracker.disconnect(_wsAnimationSwipeEndId);
+            _wsAnimationSwipeEndId = 0;
+        }
+    } else if (!_wsAnimationSwipeBeginId) {
+        // display ws switcher popup when gesture begins and connect progress
+        _wsAnimationSwipeBeginId = Main.wm._workspaceAnimation._swipeTracker.connect('begin', _connectWsAnimationProgress);
+        // we want to be sure that popup with the final ws index show up when gesture ends
+        _wsAnimationSwipeEndId = Main.wm._workspaceAnimation._swipeTracker.connect('end', () => _showWsSwitcherPopup(0));
+    }
+}
+
+function _connectWsAnimationProgress() {
+    if (Main.overview.visible) return;
+
+    // progress is being updated only when user finished gesture and the animation continues on "autopilot"
+    Main.wm._workspaceAnimation._switchData.monitors[0].connect('notify::progress',(actor) => {
+        const progress = actor.progress % 1;
+        let direction = 0;
+        if (!actor._prg) actor._prg = progress;
+        else if (!progress) return;
+        else if (progress < actor._prg) direction = -1;
+        else if (progress > actor._prg) direction = 1;
+        if (progress < 0.6 && progress > 0.4)
+            _showWsSwitcherPopup(direction);
+    });
+
+    // display popup when gesture begins
+    _showWsSwitcherPopup(0);
+}
+
+function _showWsSwitcherPopup(direction) {
+    if (Main.overview.visible) return;
+
+    const wsIndex = global.workspaceManager.get_active_workspace_index() + direction;
+    if (Main.wm._workspaceSwitcherPopup === null) {
+        Main.wm._workspaceSwitcherPopup = new WorkspaceSwitcherPopup.WorkspaceSwitcherPopup();
+        Main.wm._workspaceSwitcherPopup.connect('destroy', () => {
+            Main.wm._workspaceSwitcherPopup = null;
+        });
+    }
+
+    Main.wm._workspaceSwitcherPopup.display(wsIndex);
+}