kra is the native format for Krita and ora the interchange format
for krita, gimp and mypaint (it's also mypaint's native format).
Both formats are simply zip containers with an embedded png.
REVIEW:126675
They were already disabled when building with Qt >= 5.3 in commit
3d45b270ea because Qt has better plugins
for those image formats. Now that we depend on Qt 5.3 we can remove
them.
REVIEW: 124636
QtImageFormats 5.3 comes with DDS and JPEG-2000 plugins that support
more options and are generally better than our plugins. The only
advantage our plugins offer is that the Qt DDS plugin does not work on
sequential devices, while ours does. This is outweighed by other
improvements, though, such as supporting more variants.
REVIEW: 119590
This both excludes the autotests and tests subdirs if the user sets
BUILD_TESTING off, and makes sure we do not run tests for formats that
were not built due to dependencies not being found.
REVIEW: 115504
Two main tests: read the file and compare to a given image (loaded from
png), and write a file out and compare to a previously-written image.
The write test in particular is kind of fragile, but it should help
catch some errors where a code change was not intended to affect the
output of the plugin.
Tests are included for all the writable formats, as well as every
readable format that GIMP can write to (and so I could easily get an
example of).
REVIEW: 115430
src/imageformats/CMakeLists.txt is now much clearer and more consistent.
Also, removed an unnecessary/unimplemented method from exr.cpp.
REVIEW: 115120
