Fix composited transform bounds calculations (#6302)

We weren't computing the bounds for composited transforms correctly. We
need to conjugate the transform by the offset in order to get the
correct paint bounds for the composited layer. We now also use the same
math in the non-composited case for consistency.

Also, don't scale the z-coordinate in RenderFittedBox.

Fixes #6293
5 files changed
tree: ce51df7b466c55c3af753567580668ccb998aee0
  1. .idea/
  2. bin/
  3. dev/
  4. examples/
  5. packages/
  6. .analysis_options
  7. .analysis_options_repo
  8. .analysis_options_user
  9. .gitignore
  10. .travis.yml
  11. AUTHORS
  12. CONTRIBUTING.md
  13. ISSUE_TEMPLATE.md
  14. LICENSE
  15. README.md
  16. VERSION
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