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Date: Thu, 05 Jul 2007 14:02:33 -0700
From: Sam Lantinga
Subject: SDL 1.3 keyboard plan
After lots of discussion with Christian, this is what we came up with:
> So, to sum up...
> SDLK_* become the physical keys, starting at > (1<<21)
> We create a macro SDLK_INDEX(X)
> We have two functions SDL_GetLayoutKey(SDLKey) and SDL_GetKeyName()
> SDL_GetLayoutKey maps to UCS4 for printable characters, and SDLK* for
non-printable characters
> and does so based on the OS's current keyboard layout
> SDL_GetKeyName() handles both SDLK_* and UCS4, converting UCS4 to UTF-8 and
converting SDLK_* into our names, which are UTF-8 for printable characters.
> WASD folks use SDLK_*, and 'I' folks use SDL_GetLayoutKey(SDLK_*)
Here is the patch he came up with, and his e-mail about it:
Date: Fri, 17 Aug 2007 19:50:28 +0200
From: Christian Walther
Subject: Re: SDL 1.3 keyboard plan
> Sounds great, go ahead and send me a patch.
Here goes! Thanks for having a look. Don't hesitate to comment if
anything does not conform to your ideas.
One caveat: Committing this now may break compilability of some video
drivers - specifically, if they use any of the SDLK_* codes that were
obsoleted and moved into SDL_compat.h. I only tried Cocoa (which did
break, but is already fixed) and X11 (which didn't, but then its key
handling is #iffed out). If that's a problem, it may need to go into
a branch.
-Christian
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 19 Aug 2007 14:52:52 +0000 |
parents | 355632dca928 |
children |
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<HTML ><HEAD ><TITLE >Event Functions.</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="SDL Library Documentation" HREF="index.html"><LINK REL="UP" TITLE="Events" HREF="event.html"><LINK REL="PREVIOUS" TITLE="SDLKey" HREF="sdlkey.html"><LINK REL="NEXT" TITLE="SDL_PumpEvents" HREF="sdlpumpevents.html"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFF8DC" TEXT="#000000" LINK="#0000ee" VLINK="#551a8b" ALINK="#ff0000" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >SDL Library Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="sdlkey.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 8. Events</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdlpumpevents.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="EVENTFUNCTIONS" ></A >Event Functions.</H1 ><DIV CLASS="TOC" ><DL ><DT ><B >Table of Contents</B ></DT ><DT ><A HREF="sdlpumpevents.html" >SDL_PumpEvents</A > -- Pumps the event loop, gathering events from the input devices.</DT ><DT ><A HREF="sdlpeepevents.html" >SDL_PeepEvents</A > -- Checks the event queue for messages and optionally returns them.</DT ><DT ><A HREF="sdlpollevent.html" >SDL_PollEvent</A > -- Polls for currently pending events.</DT ><DT ><A HREF="sdlwaitevent.html" >SDL_WaitEvent</A > -- Waits indefinitely for the next available event.</DT ><DT ><A HREF="sdlpushevent.html" >SDL_PushEvent</A > -- Pushes an event onto the event queue</DT ><DT ><A HREF="sdlseteventfilter.html" >SDL_SetEventFilter</A > -- Sets up a filter to process all events before they are posted to the event queue.</DT ><DT ><A HREF="sdlgeteventfilter.html" >SDL_GetEventFilter</A > -- Retrieves a pointer to he event filter</DT ><DT ><A HREF="sdleventstate.html" >SDL_EventState</A > -- This function allows you to set the state of processing certain events.</DT ><DT ><A HREF="sdlgetkeystate.html" >SDL_GetKeyState</A > -- Get a snapshot of the current keyboard state</DT ><DT ><A HREF="sdlgetmodstate.html" >SDL_GetModState</A > -- Get the state of modifier keys.</DT ><DT ><A HREF="sdlsetmodstate.html" >SDL_SetModState</A > -- Set the current key modifier state</DT ><DT ><A HREF="sdlgetkeyname.html" >SDL_GetKeyName</A > -- Get the name of an SDL virtual keysym</DT ><DT ><A HREF="sdlenableunicode.html" >SDL_EnableUNICODE</A > -- Enable UNICODE translation</DT ><DT ><A HREF="sdlenablekeyrepeat.html" >SDL_EnableKeyRepeat</A > -- Set keyboard repeat rate.</DT ><DT ><A HREF="sdlgetmousestate.html" >SDL_GetMouseState</A > -- Retrieve the current state of the mouse</DT ><DT ><A HREF="sdlgetrelativemousestate.html" >SDL_GetRelativeMouseState</A > -- Retrieve the current state of the mouse</DT ><DT ><A HREF="sdlgetappstate.html" >SDL_GetAppState</A > -- Get the state of the application</DT ><DT ><A HREF="sdljoystickeventstate.html" >SDL_JoystickEventState</A > -- Enable/disable joystick event polling</DT ></DL ></DIV ><DIV CLASS="INFORMALTABLE" ><A NAME="AEN5312" ></A ><P ></P ><TABLE BORDER="0" CLASS="CALSTABLE" ><TBODY ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlpumpevents.html" >SDL_PumpEvents</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Pumps the event loop, gathering events from the input devices</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlpeepevents.html" >SDL_PeepEvents</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Checks the event queue for messages and optionally returns them</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlpollevent.html" >SDL_PollEvent</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Polls for currently pending events</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlwaitevent.html" >SDL_WaitEvent</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Waits indefinitely for the next available event</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlpushevent.html" >SDL_PushEvent</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Pushes an event onto the event queue</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlseteventfilter.html" >SDL_SetEventFilter</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Sets up a filter to process all events</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdleventstate.html" >SDL_EventState</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Allows you to set the state of processing certain events</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlgetkeystate.html" >SDL_GetKeyState</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Get a snapshot of the current keyboard state</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlgetmodstate.html" >SDL_GetModState</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Get the state of modifier keys</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlsetmodstate.html" >SDL_SetModState</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Set the state of modifier keys</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlgetkeyname.html" >SDL_GetKeyName</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Get the name of an SDL virtual keysym</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlenableunicode.html" >SDL_EnableUNICODE</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Enable UNICODE translation</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlenablekeyrepeat.html" >SDL_EnableKeyRepeat</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Set keyboard repeat rate</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlgetmousestate.html" >SDL_GetMouseState</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Retrieve the current state of the mouse</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlgetrelativemousestate.html" >SDL_GetRelativeMouseState</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Retrieve the current state of the mouse</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlgetappstate.html" >SDL_GetAppState</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Get the state of the application</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdljoystickeventstate.html" >SDL_JoystickEventState</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Enable/disable joystick event polling</TD ></TR ></TBODY ></TABLE ><P ></P ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sdlkey.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sdlpumpevents.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SDLKey</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="event.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL_PumpEvents</TD ></TR ></TABLE ></DIV ></BODY ></HTML >