On Sat, 2010-04-24 at 22:21 +0200, Torsten Schoenfeld wrote:
If anyone is looking for a challenge, we also still need bindings for the offscreen window stuff:
The first patch change the way damage events are blessed, they were blessed as Gtk2::Gdk::Event::Damage but it doesn't have the ->area method. Damage events are really just expose events. Similar cases in Gtk2::Gdk::Event use a common package and are distinguished by using ->type. As we can't rename Gtk2::Gdk::Event::Expose, I chose to use it as the common package and bless damage event as a Gtk2::Gdk::Event::Expose. The second patch wrap the offscreen gdkwindow stuff. I'm wondering if offscreen gdkwindows should be in their own package. I also added a small comment to gdk_window_geometry_changed, as though it can be used with normal gdkwindows, it seems it is only useful for offscreen ones. I haven't found a way to test the from-embedder/to-embedder marshaller. The third patch contains 3 examples for offscreen gdkwindows. Two are inspired from the the gtk examples, the reflection one has small differences, I significantly expanded the rotation example to make it much more fun and generic by using the same matrix for nearly everything. (btw a $matrix->copy could be nice, I've used $matrix->multiply( Cairo::Matrix->init_identity ) instead.) And I've added a third example that simply scale the widget to the size of the window. I don't know if all 3 examples should be included. One thing I'm wondering, I've used $offscreen->set_user_data($self->window->get_user_data); to "attach" the offscreen window to its widget (so that the widget receive the expose events). GdkWindows use their user_data to hold a reference to its widget. It's the only way I found to do that, and though it works fine, maybe there should be a better way. And by the way, it would be nice if there was a way to get the widget of a gdkwindow (to be able to pick a widget with the mouse for example), the only way I know of doing that is iterating through all the widgets, and it would not work with gdkwindows that are not a $widget->window. Also it would make accessing the widget's data from the gdkwindow from-embedder/to-embedder callback much cleaner. One thing I haven't managed to do, is make it work if the child of the offscreen-using container is added/replaced after the container is realized. Quentin
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