Development of touch screen interface program using raspberry pi

When turn on button of the touch screen is pressed, the touch screen should show a loading symbol( symbol will be shared when we start work) let the loading page run for 30 secs. Then the screen should show a new page where two options are displayed( lets take it as option 1, option 2. When we touch on either option 1 or option 2, the touched option should show a color difference to indicate the selection of that option. Also raspberry pi should generate a gpio out signal when an option is selected. So use 2 GPIO pins to generate signals corresponding to option 1 and option 2.
Touch screen display, raspberry pi spec can be shared.
Msg me for more clarity in requirement.