Method animateWorkspaceTransition

packages/config/src/window-manager.ts:3242–3293

(options: {
    fromOffsetY: number;
    toOffsetY: number;
    fromOpacity: number;
    toOpacity: number;
    visibleAfter: boolean;
  })

      this.clearFloatingSnapPreview();
      return false;
    }
    const snap = this.floatingSnap;
    this.floatingSnap = null;
    if (!snap || snap.windowId !== event.window.id) {
      if (snap) {
        this.emitSnapPreview(snap.monitor, null, "floating");
      }
      return false;
    }

    this.emitSnapPreview(snap.monitor, null, "floating");
    if (event.phase !== "end") {
      return false;
    }

    const window = event.window;
    const isMaximized = window.state[WINDOW_STATE_MAXIMIZED]();

    if (snap.zone === "maximize") {
      this.clearWindowSnapState(window);
      // Route through the real maximize so the compositor `isMaximized` state
      // (and therefore the SSD maximize/restore icon) stays in sync. Calling
      // maximize() fires onWindowMaximizeRequest, which applies the rect.
      if (!isMaximized) {
        window.maximize();
      } else {
        // Already maximized (e.g. re-dropped on the top edge): just re-apply
        // the maximized rect for the monitor under the cursor.
        const rect = this.maximizedRectForWindow(window);
        playRectAnimation(
          window,
          WINDOW_STATE_RECT,
          rect,
          WINDOW_MANAGEMENT_EASING,
          WINDOW_MANAGEMENT_ANIMATION_DURATION,
        );
        workspace?.syncFloatingWindowRect(window, rect);
      }
    } else {
      // Half / quarter: ensure the window is unmaximized first (syncs the SSD
      // icon), with the restore rect cleared so unmaximize() does not animate
      // back to it and fight the snap, then place it at the zone rect.
      if (isMaximized) {
        window.state[WINDOW_STATE_RESTORE_RECT].set(null);
        window.state[WINDOW_STATE_MAXIMIZED].set(false);
        window.unmaximize();
      }
      playRectAnimation(
        window,
        WINDOW_STATE_RECT,
        snap.rect,
        WINDOW_MANAGEMENT_EASING,
        WINDOW_MANAGEMENT_ANIMATION_DURATION,
      );
      this.setWindowSnapState(workspace, window, snap.monitor, snap.zone);