How do I zoom in and out for a mobile book app

hi guys! Is there a way or plugin of construct 2 that implements zoom in out gesture?

Have you looked at the pan and zoom example shipped with Construct2?

It's right there in your new project dialog..

yep. but the problems are:

1. The image is moving even I don't zoom in.

2. When I zoom it in and move it the image is moving and I can see the white workspace which is not appropriate

3. From zooming in to zooming out, the image must return to its original size

Any luck on this?

Well all you need is in that example, you only have to adjust the bits you don't like so you like them..

I don't know how you've set things up so answering this would be pretty much guessing..

Maybe an expression like clamp() could help, to create stuff like a maximum and minimum zoom and pan..

I have a little knowledge on how can I understand codes sorry, though thanks for the help

There's a great plugin someone wrote called "Magicam" which would be great for what you are doing. check it out