[Android] User configurable input overlay scaling

[Hydr8gon]

I extended this from simply shrinking the B button. I resized the B, X, Y and start buttons, but the main thing is user configurable scaling of the onscreen input. The minimum is 50%, the maximum is 200%, and the default is 100%.

Screenshots:
http://i.imgur.com/SBcxDsi.png
http://i.imgur.com/lv16N0Z.png
http://i.imgur.com/e2XFj08.png
http://i.imgur.com/1AJ4nQn.png
http://i.imgur.com/juhoXok.png
(This last one has a very slightly smaller B button to better match actual controller)
http://i.imgur.com/K63Zl4A.png

[lioncash]

Image of before and after?

[Hydr8gon]

@lioncash added to top comment

[lioncash]

Wouldn't it be easier to scale the B button in the assets relative to the A button? That way it wouldn't need to be downsized like this at runtime.

Ping @MaJoRoesch

[Hydr8gon]

@lioncash I resized the B button the same way the joystick was already being resized. When resizeBitmap is called, it resizes all buttons before drawing them to the screen depending on what the scale value is. Basically, every button is already being scaled before being drawn.

[lioncash]

Ah ok. All is good then.

[Hydr8gon]

Extended this PR from just the B button.

[MayImilae]

Shrink the B button a tiny bit more and you'll be accurate to hardware. (Used the A button as relative scale)

Reference is below. I made the buttons with hardware scaling in mind, so ideally all the letters will be the same size on hardware accurate scaling. You can use that as a reference too if you'd like.

Reference - http://commons.wikimedia.org/wiki/File:Gamecube-controller-breakdown.jpg

[Hydr8gon]

@MaJoRoesch I did originally have it smaller, but I didn't know if it would be too small or not. I can bump it down if it's that small a difference though.

[MayImilae]

Might as well make it accurate to hardware when you are this close! They can always scale everything up. :D

[Hydr8gon]

That took way too long, I'm on vacation right now and the Internet here has nearly non-existent upload/download speeds along with disconnecting every 3 seconds... Anyways, I'll try to upload another screenshot, although it was hell to upload the other ones. Oh yeah, I also squashed the 2 commits into one for easier editing.

Edit: Got it to upload: http://i.imgur.com/K63Zl4A.png

[lioncash]

@dolphin-emu-bot rebuild

[MayImilae]

Eh, not perfect, but very close so good enough. Now if someone could just fix that scaling aliasing... ;)

[lioncash]

@dolphin-emu-bot rebuild

Final rebuild