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lenemterlenemter
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Introduce WorkspaceHideTracker
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‎lib/Gestures/WorkspaceHideTracker.vala‎

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/*
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* SPDX-License-Identifier: GPL-3.0-or-later
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* SPDX-FileCopyrightText: 2025 elementary, Inc. (https://elementary.io)
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*/
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public class Gala.WorkspaceHideTracker : Object {
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public delegate double ComputeWorkspaceProgress (Meta.Workspace workspace);
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public signal void switching_workspace_progress_updated (double new_progress);
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public signal void window_state_changed_progress_updated (double new_progress);
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public Meta.Display display { private get; construct; }
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private ComputeWorkspaceProgress? compute_func = null;
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private double switch_workspace_progress = 0.0;
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private double[] workspace_hide_progress_cache = {};
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public WorkspaceHideTracker (Meta.Display display) {
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Object (display: display);
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}
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construct {
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display.list_all_windows ().foreach (setup_window);
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display.window_created.connect (setup_window);
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unowned var monitor_manager = display.get_context ().get_backend ().get_monitor_manager ();
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monitor_manager.monitors_changed.connect (recalculate_all_workspaces);
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unowned var workspace_manager = display.get_workspace_manager ();
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workspace_manager.workspace_added.connect (recalculate_all_workspaces);
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workspace_manager.workspace_removed.connect (recalculate_all_workspaces);
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recalculate_all_workspaces ();
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}
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public void set_compute_func (ComputeWorkspaceProgress? new_compute_func) {
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compute_func = new_compute_func;
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}
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private void setup_window (Meta.Window window) {
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window.notify["window-type"].connect (on_window_type_changed);
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if (!Utils.get_window_is_normal (window)) {
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return;
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}
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if (window.on_all_workspaces) {
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recalculate_all_workspaces ();
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} else {
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recalculate_workspace (window);
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}
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window.position_changed.connect (recalculate_workspace);
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window.size_changed.connect (recalculate_workspace);
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window.workspace_changed.connect (recalculate_all_workspaces);
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window.focused.connect (recalculate_workspace);
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window.notify["on-all-workspaces"].connect (recalculate_all_workspaces);
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window.notify["fullscreen"].connect (recalculate_workspace_pspec);
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window.notify["minimized"].connect (recalculate_workspace_pspec);
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window.notify["above"].connect (recalculate_workspace_pspec);
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window.unmanaged.connect (recalculate_workspace);
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}
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private void on_window_type_changed (Object obj, ParamSpec pspec) {
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var window = (Meta.Window) obj;
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window.notify["window-type"].disconnect (on_window_type_changed);
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window.position_changed.disconnect (recalculate_workspace);
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window.size_changed.disconnect (recalculate_workspace);
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window.workspace_changed.disconnect (recalculate_all_workspaces);
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window.focused.disconnect (recalculate_workspace);
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window.notify["on-all-workspaces"].disconnect (recalculate_all_workspaces);
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window.notify["fullscreen"].disconnect (recalculate_workspace_pspec);
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window.notify["minimized"].disconnect (recalculate_workspace_pspec);
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window.notify["above"].disconnect (recalculate_workspace_pspec);
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window.unmanaged.disconnect (recalculate_workspace);
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setup_window (window);
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}
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/**
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* Updates progress, it will do nothing if update_type is COMMIT or action is not SWITCH_WORKSPACE.
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*/
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public void update (GestureTarget.UpdateType update_type, GestureAction action, double progress) {
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if (action != SWITCH_WORKSPACE || update_type == COMMIT) {
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return;
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}
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var new_switch_workspace_progress = progress.abs ();
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// When number of workspaces changes, we get phantom SWITCH_WORKSPACE propagations
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if (switch_workspace_progress == new_switch_workspace_progress) {
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return;
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}
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switch_workspace_progress = new_switch_workspace_progress;
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switching_workspace_progress_updated (get_hidden_progress ());
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}
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private double get_hidden_progress () {
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var n_workspaces = workspace_hide_progress_cache.length;
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var left_workspace = int.max ((int) Math.floor (switch_workspace_progress), 0);
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var right_workspace = int.min ((int) Math.ceil (switch_workspace_progress), n_workspaces - 1);
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var relative_progress = switch_workspace_progress - left_workspace;
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return (
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workspace_hide_progress_cache[left_workspace] * (1 - relative_progress) +
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workspace_hide_progress_cache[right_workspace] * relative_progress
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);
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}
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/**
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* Trigger recalculation of all workspaces
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*/
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public void recalculate_all_workspaces () {
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unowned var workspace_manager = display.get_workspace_manager ();
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workspace_hide_progress_cache = new double[workspace_manager.n_workspaces];
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foreach (unowned var workspace in workspace_manager.get_workspaces ()) {
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internal_recalculate_workspace (workspace, false);
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}
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window_state_changed_progress_updated (get_hidden_progress ());
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}
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private void internal_recalculate_workspace (Meta.Workspace? workspace, bool send_signal) {
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if (
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workspace == null ||
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workspace.workspace_index >= workspace_hide_progress_cache.length ||
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compute_func == null
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) {
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return;
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}
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workspace_hide_progress_cache[workspace.workspace_index] = compute_func (workspace);
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if (send_signal) {
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window_state_changed_progress_updated (get_hidden_progress ());
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}
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}
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private void recalculate_workspace (Meta.Window window) {
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internal_recalculate_workspace (window.get_workspace (), true);
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}
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private void recalculate_workspace_pspec (Object obj, ParamSpec pspec) {
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internal_recalculate_workspace (((Meta.Window) obj).get_workspace (), true);
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}
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}

‎lib/meson.build‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -36,7 +36,8 @@ gala_lib_sources = files(
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'Gestures/ScrollBackend.vala',
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'Gestures/SpringTimeline.vala',
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'Gestures/ToucheggBackend.vala',
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'Gestures/TouchpadBackend.vala'
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'Gestures/TouchpadBackend.vala',
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'Gestures/WorkspaceHideTracker.vala'
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) + gala_common_enums
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gala_resources = gnome.compile_resources(

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