Gueniffey 2011-11-23 04:11:31 PST
The attached simple patch adds a timestamp to all SDL events. It is useful to
dismiss old events and add UI responsiveness (my application does some
extensive tasks that creates a delay in the event queue handling. With this
patch, I can deal only with the most recent events.
* Switched event type to enum (int32)
* Switched polling by mask to polling by type range
* Added SDL_RegisterEvents() to allow dynamic user event registration
* Spread events out to allow inserting new related events without breaking binary compatibility
* Added padding to event structures so they're the same size regardless of 32-bit compiler structure packing settings
* Split SDL_HasEvent() to SDL_HasEvent() for a single event and SDL_HasEvents() for a range of events
* Added SDL_GetEventState() as a shortcut for SDL_EventState(X, SDL_QUERY)
* Added SDL_FlushEvent() and SDL_FlushEvents() to clear events from the event queue
Gerry JJ 2008-11-09 02:11:49 PST
The SDL_MouseMotionEvent struct has a field named "tilt" (currently marked "for
future use"), for tablet stylus tilt information. However, one value is not
enough for this, as tilt is two-dimensional. Reserving only one field for
future use is no good when you're going to need two, so there should be two
fields, tilt_x and tilt_y.
Since many different event structures include windowID it should be placed near
the beginning of the structure (preferably right after type) so it's position
is the same between different events.
This is to avoid code like this:
if (event.type == SDL_WINDOWEVENT)
win = event.window.windowID;
else if ((SDL_EVENTMASK(event.type) & SDL_KEYEVENTMASK) != 0)
win = event.key.windowID;
else if (event.type == SDL_TEXTINPUT)
win = event.text.windowID;
else if (event.type == SDL_MOUSEMOTION)
win = event.motion.windowID;
else if ((SDL_EVENTMASK(event.type) & (SDL_MOUBUTTONDOWNMASK |
SDL_MOUBUTTONUPMASK)) != 0)
win = event.button.windowID;
else if (event.type == SDL_MOUSEWHEEL)
win = event.wheel.windowID;
...
in favor of:
win = event.window.windowID;
Many-mouse and tablet support
by Szymon Wilczek, mentored by Ryan C. Gordon
Everything concerning the project is noted on the wiki:
http://wilku.ravenlord.ws/doku.php?id=start
