Method _convertButtonMask

systemvm/agent/noVNC/core/rfb.js:1210–1238

(buttons)

    }

    static _convertButtonMask(buttons) {
        /* The bits in MouseEvent.buttons property correspond
         * to the following mouse buttons:
         *     0: Left
         *     1: Right
         *     2: Middle
         *     3: Back
         *     4: Forward
         *
         * These bits needs to be converted to what they are defined as
         * in the RFB protocol.
         */

        const buttonMaskMap = {
            0: 1 << 0, // Left
            1: 1 << 2, // Right
            2: 1 << 1, // Middle
            3: 1 << 7, // Back
            4: 1 << 8, // Forward
        };

        let bmask = 0;
        for (let i = 0; i < 5; i++) {
            if (buttons & (1 << i)) {
                bmask |= buttonMaskMap[i];
            }
        }
        return bmask;
    }

    _handleMouse(ev) {
        /*