2004-06-16 Michael Natterer <mitch@gimp.org>
Started to fix bug #106920 in a more genreral way:
* libgimpwidgets/Makefile.am
* libgimpwidgets/gimpwidgetstypes.h
* libgimpwidgets/gimpwidgetsmarshal.list
* libgimpwidgets/gimpcontroller.[ch]: new abstract base class
which provides an API for pluggable input controller modules
(mouse wheel, usb/midi stuff etc.).
* app/widgets/Makefile.am
* app/widgets/widgets-types.h
* app/widgets/gimpcontrollerwheel.[ch]: subclass of the above
which maps wheel mouse scroll events to controller events.
* app/widgets/gimpcontrollers.[ch]: manager for controllers.
reads $(gimpdir)/controllerrc and keeps a mapping of controller
events to GtkActions.
* app/gui/gui.c: initialize and shut down the controller stuff.
* app/display/gimpdisplayshell-callbacks.c
(gimp_display_shell_canvas_tool_events): if a wheel controller
exists, dispatch GdkEventScroll to it first and return if it was
handled.
Michael Natterer