Is it possible to have a touch control of the mouse cursor in Android instead of the use of a hardware mouse? Maybe something like the soft keyboard?
As Liam W suggested, have you tried the any of the developer options? On at least 4.0 (ICS) and higher (and perhaps older versions, someone else will have to verify) in Settings > Developer Options check out Show Touches and Pointer Location (screenshots and short descriptions here). Neither are exactly what you're looking for, but perhaps you'll find them useful.
[Root] On-screen Pointer is the name of the app you want. https://play.google.com/store/apps/details?id=com.jkhddev.mouemu
I really wondered why does not exist useful app for tablet or other wide mobile screens like touchpad and ro cursor. I found that finally. It is so tough to excute that function. Unfortunately, It is only be used for rooted device but if you have that. It will be very useful app. It is free app, I recommend this app for tablet users and if it is not functional please see the app description. first, you must have rooted device, second if your android OS 5.0 or above , you have to download selinux mode changer in search google. set permissive and reboot your device. Have a good day. If you want to find this app, google keyword search - easy touch auto clicker. and you will find the shape of arrow.