Touch event on masked canvas
I am new to Android app development and have been looking for tutorials on how to use touch events to move around and zoom in and out of a canvas that is seen by way of a mask/viewport. The mask/viewport would, I'm guessing, be the parent layout that has a fixed size and position. The attached .jpg shows a better diagram of what I would like to be able to do. If there are any experts out there itching to create a tutorial, this might be a good one. At least I know I would appreciate it.