Interface WheelConverterInterface

Converts wheel events to a fixed value, trying to have a consistent behavior from browser to browsers.

Warning: Wheel events values may change from browser version changes.

Default implementation is given here:

import { BrowserType, WheelConverterInterface } from 'generated_files/documentation/appinfiniteapi';

// Wheel events are not really consistent from browser to browser
// this default implementation runs on current usual browsers
class DefaultWheelConverter implements WheelConverterInterface
{
    // convert wheel event depending on browser and version
    convertWheelEvent(pEvent: WheelEvent, pBrowserTpe : BrowserType, pIsEdgeChromium: boolean, _pBrowserVersion : string) : number
    {
        switch (pBrowserTpe) {
            // firefox
            case BrowserType.firefox:
                return pEvent.deltaY * -1; // wheel value 3
            // safari
            case BrowserType.safari:
                // 															(pEvent['wheelDelta'] < 0 ? -1 : 1)
                return Math.min(24, Math.abs(pEvent['wheelDelta'])) * (1 - 2 * (<any>(pEvent['wheelDelta'] < 0) | 0)) * -15; // wheel value 12
            // edge
            case BrowserType.edge:
                if (pIsEdgeChromium) {
                    return pEvent['wheelDelta'];
                }
                return pEvent['wheelDelta'] * 1.5; // wheel value 120
            // internet explorer
            case BrowserType.ie:
                return pEvent.deltaY * -0.9; // wheel value 198.3
            // default, mainly chrome
            default:
                if (pEvent['wheelDelta'] !== undefined) {
                    return pEvent['wheelDelta']; // wheel value 180
                }
                if (pEvent.deltaY !== undefined) {
                    return pEvent.deltaY * -60;
                }
                return 0;
        }
    }
}
export { DefaultWheelConverter };

Copy

Wheel Converters are installed/removed from InfiniteApiControllerInterface.setWheelConverter and InfiniteApiControllerInterface.restoreDefaultWheelConverter.

See

• CameraManagerInterface
• InfiniteApiControllerInterface