Add option to disable translation of the crop window

[chriscoomber]

close #78

Template 1 [New Feature]

Description:

Added new option to disable translating of the crop window by dragging the center.

Most of the changes here were boilerplate changes. I used the multiTouch option as a template to make sure I added the option to all the places it was required, such as XML, CropImageView and ActivityBuilder. I also added the toggle to the sample app.

The functional change is that, when this toggle is disabled, dragging from the center of the crop window does nothing.

Check list for the Code Reviewer:

• CHANGELOG
• README
• Wiki
• Version Number

[chriscoomber]

This conflicts very minorly with #76, so I suggest we merge than one first and then I'll fix up the conflicts.

[chriscoomber]

Meta point: I realize that these features might not be popular - they're just something I need that I might as well share. I definitely want to use this library rather than rolling my own as it is high quality. This is the last feature that I need to add. Feel free to push back against this if you don't think this feature should be added - it's no problem for me to fork the repo.

[Canato]

@chriscoomber

Meta point: I realize that these features might not be popular - they're just something I need that I might as well share. I definitely want to use this library rather than rolling my own as it is high quality. This is the last feature that I need to add. Feel free to push back against this if you don't think this feature should be added - it's no problem for me to fork the repo.

I believe it is not a problem, since it can be useful for more people.

We just need to be sure that the default value keeps the expected behaviour.

Because of the possible misinterpretation of ImageTranslation how about we name the method lockCenter or disableCropCenterMove?

[chriscoomber]

Because of the possible misinterpretation of ImageTranslation how about we name the method lockCenter or disableCropCenterMove?

I've renamed it centerMoveEnabled, and the XML attribute is cropCenterMoveEnabled.

[Canato]

Looking good!

Let me know, when is over.

Please don't forget to add setCenterMoveEnabled() into Sample/CameraFragment on the methods startCameraWithoutUri and startCameraWithUri

[chriscoomber]

@Canato OK I think this is done. I can't see anything else that needs changing.

[Canato]

Great work!