dmitry_vk wrote:It looks like that you do not use the GObject system properly.
dmitry_vk wrote: First, it has a first-class support for using closures as callbacks (no need to defcallback every callback type and generic type-safe way to invoke/emit signals using GValue and GClosure). This lets you pass a closure as a signal handler and have it properly garbage collected.
dmitry_vk wrote:Also, it does not seem that you use the GObject memory management to properly garbage-collect GObjects.
dmitry_vk wrote:Then, you do not need to grovel for enums and flags, objects, properties and signals — GObject has it all exposed. The only things that require grovelling are:
2) vtable structures for interfaces/objects (needed for subclassing GObjects and implementing GInterfaces)
3) some properties that are for some reason not exposed through GObject type system
dmitry_vk wrote:Btw, I have a pretty good (as far as I think ) GObject binding at cl-gtk2. I think it is worth looking at it (however, subclassing objects is not quite supported yet, but implementing GInterfaces works.
Ramarren wrote:I actually checked for that, and GObjects do get collected
Ramarren wrote:Enums/flags need mapping from C-names to Lisp-names anyway, even if I used GObject to map to them from values, so I might just as well grovel for them, saving a FFI call per translation.
Ramarren wrote:Subclassing is not hard, but a bit messy, since you can't really avoid grovelling (unless vtable offsets are hardcoded, and that never ends well) and defcallback'ing a lot, since virtual function translations need outright function pointers, not GClosures. I think.
Ramarren wrote:The second issue is more stylistic. I have semi-autogenerated the bindings (ie. autogenerated from a heavily hand-edited input files using a minimal subset of C), and given all generated function names a '%' prefix. But I don't think that there is much point in wrapping foreign Clutter objects in Lisp-side objects, so the public interface right now requires using those '%' functions, which is probably bad style, since those are usually used to signify functions internal to implementation. On the other hand, I don't want to get rid of '%' globally, because it makes wrapping those functions which use out-pointer C idiom annoying. On the other other hand as I written before, Clutter is low level enough that those function can be, in a sense, considered internal anyway.
Ramarren wrote:I have no idea what versions are in package managers. In portage there is none, so I compiled Clutter from sources, which only compounds the paths issue.
Ramarren wrote:Note that the bindings are for recently released version 0.9.6, which breaks API compatibility with 0.8 series. I have no idea what versions are in package managers. In portage there is none, so I compiled Clutter from sources, which only compounds the paths issue.
dmitry_vk wrote:Ramarren wrote:Note that the bindings are for recently released version 0.9.6, which breaks API compatibility with 0.8 series. I have no idea what versions are in package managers. In portage there is none, so I compiled Clutter from sources, which only compounds the paths issue.
According to the blog post you mentioned, «This version is fully API and ABI incompatible with the previous 0.8 releases.» So API should not break.
dmitry_vk wrote:I've cleaned up my GObject binding and I'm trying to use it to create binding for clutter. But I noticed that the clutter is rather picky about threading: if I compile a binding and call init in one thread, then start the main function from the REPL (compilation and evalution from REPL creates threads in SLIME), clutter prints messages "(<unknown>:20977): Clutter-CRITICAL **: clutter_id_pool_lookup: assertion `id < id_pool->array->len' failed". But if I call init from the same thread that I call main, it works.
It seems that you have experience with clutter; have you experienced this issue? If yes, how did you solve it (I didn't look very much at your sources)?
Harnon wrote:I was just wandering, are you using windows with clutter? Because i'm trying to build clutter but not managing it....
It appears that it includes glx.h (from mesa libgl) which then includes some x11 headers which means i'm going to have to build this on cygwin...
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