screenshot route should use drawViewHierarchyInRect:afterScreenUpdates: for iOS 7

[jmoody]

motivation

Using drawViewHierarchyInRect:afterScreenUpdates will enable screenshotting of OpenGL views.

options

1. Use drawViewHierarchyInRect:afterScreenUpdates and punt on the quality of the screenshots; the screenshots are good enough in my opinion.
2. Detect UIAlertView or UIActionSheet in screenshot route and fall back to current behavior, otherwise use drawViewHierarchyInRect:afterScreenUpdates .
3. Implement an OpenGL screenshot route that uses drawViewHierarchyInRect:afterScreenUpdates.

• @jmoody - option 1
• @krukow krukow - option ??

@Clancey - feel free to weigh in on this.

testing

• calabash-ios-server
  • https://github.com/jmoody/calabash-ios-server/tree/WIP/169-screenshot-for-opengl
• briar-ios-example
  • https://github.com/jmoody/briar-ios-example/tree/WIP/new-iOS7-screenshotting
  • current framework is 0.9.169.pre1 using drawViewHierarchyInRect
  • $ be cucumber -t @screenshot
  • $ be briar report ==> open latest test run in default browser

_NB._ screenshots were taken after animations were completed.

• OpenGL views - works great; there is no current solution
• one-window view hierarchies - works the same as current solution
• UIAlertView - not so good
• UIActionSheet - as good as current solution
• MFMailComposeViewController (email view controller) - works same as current solution

UIAlertView

UIActionSheet

The drawViewHierarchyInRect:afterScreenUpdates is arguably better than the current 0.9.168 screenshot.

[jmoody]

Moved to server.

[jmoody]

Issues with UIAlertView and UIActionSheet have been resolved.