Firefox plugin woes

The PackageKit browser plugin hasn’t had a lot of love recently. It was written in C++ a few months ago by Owen, but started to bitrot over the last few xulrunner releases.

I’ve spruced up the code, and ported everything to C (using GObject where possible) and now it all seems to work with one exception: invalidaterect doesn’t seem to work where I think it’s supposed to.

I’m setting up the plugin with some default content, which gets shown to the screen. I’m then doing a PackageKit query, and a few ms later I get the results. I then update some internal state, and call the invalidaterect for the whole drawing area, expecting a GraphicsExpose event to render the new content. But alas, invalidaterect seems to do nothing.

I’ve even tried adding a forceredraw call after invalidaterect, but that also gets ignored. If I manually resize the epiphany/firefox window then the GraphicsExpose event gets called, and the plugin then shows the correct state. This is a windowless plugin and nsplugginwrapper has been removed, and so I think I’m doing everything by the book, so to speak. Help welcomed, and anyone pointing out the bug will be rewarded with a beverage of your choice. Code is here. Thanks.

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Richard has over 10 years of experience developing open source software. He is the maintainer of GNOME Software, PackageKit, GNOME Packagekit, GNOME Power Manager, GNOME Color Manager, colord, and UPower and also contributes to many other projects and opensource standards. Richard has three main areas of interest on the free desktop, color management, package management, and power management. Richard graduated a few years ago from the University of Surrey with a Masters in Electronics Engineering. He now works for Red Hat in the desktop group, and also manages a company selling open source calibration equipment. Richard's outside interests include taking photos and eating good food.

2 thoughts on “Firefox plugin woes”

  1. NPP is a pointer already, so this diff should fix it:

    – g_signal_connect (install, “refresh”, G_CALLBACK (pk_main_refresh_cb), &instance);
    + g_signal_connect (install, “refresh”, G_CALLBACK (pk_main_refresh_cb), instance);

    plus an s/NPP*/NPP/ in the callback.

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