How to disable dragging of viewer?

Question

I had a feature which can get current pointer color like photoshop. I've used setMouseNavEnabled to disable drag, but it also can't scroll.

Does any way can only disable the drag event? Or enable scroll when setMouseNavEnabled = false .

Answer 1

Solved.

tracker = new $.MouseTracker({
        element: this.viewer.canvas,
        pressHandler: setMouseNavEnabled(false),
        releaseHandler: setMouseNavEnabled(true),
});

Answer 2

There's other ways to disable dragging:

    // Using viewer events
    viewer.addHandler('canvas-drag', (event) => {
      event.preventDefaultAction = true;
    });

    // Similar code can be used for the following viewer events:
    //   'canvas-key', 'canvas-scroll', 'canvas-click',
    //   'canvas-double-click', and 'canvas-drag'

    // For specific pointer devices
    viewer.gestureSettingsMouse.dragToPan = false;
    viewer.gestureSettingsTouch.dragToPan = true;
    viewer.gestureSettingsPen.dragToPan = true;