d56beda4d8
* agg::renderer_region gets an extra feature which allows to optionally shift the coordinates by a specified offset. * This allows to shift coordinates at the lowest level, even below the transformations done by BAffineTransform (which happen in the painter, right before rasterization). Needed for layers support: shifts the origin of the layer bitmaps to their position in the view while keeping all transformations (BView origin/scale transforms as well as BAffineTransforms) intact. The offset for the layer bitmaps within their parent view is determined by the bounding box and is then fixed, it must not be altered while the layer's BPicture is played into the bitmap. If this offset were added to the BView origin or as translation in the BAffineTransform, it would be further transformed by the BView scale or the other affine transform parameters. Thus, we need another low-level offset mechanism which is even below BAffineTransform's transformations.
Haiku
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Haiku is an open-source operating system that specifically targets personal computing. Inspired by the BeOS, Haiku is fast, simple to use, easy to learn and yet very powerful.
Goals
- Sensible defaults with minimal configuration required.
- Clean, clear, concise code.
- Unified desktop environment.
Trying Haiku
Haiku provides pre-built nightly images and release images. Haiku is compatible with a large variety of hardware, but in case you don't want to "take the plunge" and install Haiku on bare metal, you can install it on a virtual machine (VM) instead. If you've never used a VM before, you can follow one of the "Emulating Haiku" guides.
Compiling Haiku
See ReadMe.Compiling.
Contributing
Haiku is a meritocratic open source project with a large variety of tasks. Even if you can't write code, you can still help! Haiku needs designers, (technical) writers, translators, testers... Get involved and help out!
Contributing code
If you're submitting a patch to us, please make sure you're following the patch submitting guidelines.
If you're having trouble finding something in the source tree, you can use one of our OpenGrok servers:
- http://xref.plausible.coop/ (provided by Landon Fuller)
- http://code.metager.de/source/xref/haiku (provided by MetaGer)
Contributing documentation
The main piece of documentation that still needs work are the API docs (found
in the tree at docs/user). Just find an undocumented class, write
documentation for it, and submit a patch.
Contributing translations
See wiki:i18n.
Contributing software ports
See HaikuPorts.