Mercurial > sdl-ios-xcode
view src/video/Xext/extensions/panoramiXproto.h @ 563:04dcaf3da918
Massive Quartz input enhancements from Darrell Walisser. His email:
Enclosed is a patch that addresses the following:
--Various minor cleanups.
Removed dead/obsolete code, made some style cleanups
--Mouse Events
Now keep track of what button(s) were pressed so we know when to send
the mouse up event. This fixes the case where the mouse is dragged
outside of the game window and released (in which case we want to send
the mouse up event even though the mouse is outside the game window).
--Input Grabbing
Here is my take on the grabbing situation, which is the basis for the
new implementation.
There are 3 grab states, ungrabbed (UG), visible (VG), and invisible
(IG). Both VG and IG keep the mouse constrained to the window and
produce relative motion events. In VG the cursor is visible (duh), in
IG it is not. In VG, absolute motion events also work.
There are 6 actions that can affect grabbing:
1. Set Fullscreen/Window (F/W). In fullscreen, a visible grab should do
nothing. However, a fullscreen visible grab can be treated just like a
windowed visible grab, which is what I have done to help simplify
things.
2. Cursor hide/show (H/S). If the cursor is hidden when grabbing, the
grab is an invisible grab. If the cursor is visible, the grab should
just constrain the mouse to the window.
3. Input grab/ungrab(G/U). If grabbed, the cursor should be confined to
the window as should the keyboard input. On Mac OS X, the keyboard
input is implicitly grabbed by confining the cursor, except for
command-tab which can switch away from the application. Should the
window come to the foreground if the application is deactivated and
grab input is called? This isn't necessary in this implementation
because the grab state will be asserted upon activation.
Using my notation, these are all the cases that need to be handled
(state + action = new state).
UG+U = UG
UG+G = VG or IG, if cursor is visible or not
UG+H = UG
UG+S = UG
VG+U = UG
VG+G = VG
VG+H = IG
VG+S = VG
IG+U = UG
IG+G = IG
IG+H = IG
IG+S = VG
The cases that result in the same state can be ignored in the code,
which cuts it down to just 5 cases.
Another issue is what happens when the app loses/gains input focus from
deactivate/activate or iconify/deiconify. I think that if input focus
is ever lost (outside of SDL's control), the grab state should be
suspended and the cursor should become visible and active again. When
regained, the cursor should reappear in its original location and/or
grab state. This way, when reactivating the cursor is still in the same
position as before so apps shouldn't get confused when the next motion
event comes in. This is what I've done in this patch.
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Fri, 27 Dec 2002 20:52:41 +0000 |
parents | eadc0746dfaf |
children | 782fd950bd46 |
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/* $Xorg: panoramiXproto.h,v 1.4 2000/08/18 04:05:45 coskrey Exp $ */ /***************************************************************** Copyright (c) 1991, 1997 Digital Equipment Corporation, Maynard, Massachusetts. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software. The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL DIGITAL EQUIPMENT CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES, INCLUDING, BUT NOT LIMITED TO CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of Digital Equipment Corporation shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from Digital Equipment Corporation. ******************************************************************/ /* $XFree86: xc/include/extensions/panoramiXproto.h,v 3.6 2001/01/17 17:53:22 dawes Exp $ */ /* THIS IS NOT AN X PROJECT TEAM SPECIFICATION */ #ifndef _PANORAMIXPROTO_H_ #define _PANORAMIXPROTO_H_ #define PANORAMIX_PROTOCOL_NAME "XINERAMA" #define X_PanoramiXQueryVersion 0 #define X_PanoramiXGetState 1 #define X_PanoramiXGetScreenCount 2 #define X_PanoramiXGetScreenSize 3 #define X_XineramaIsActive 4 #define X_XineramaQueryScreens 5 typedef struct _PanoramiXQueryVersion { CARD8 reqType; /* always PanoramiXReqCode */ CARD8 panoramiXReqType; /* always X_PanoramiXQueryVersion */ CARD16 length B16; CARD8 clientMajor; CARD8 clientMinor; CARD16 unused B16; } xPanoramiXQueryVersionReq; #define sz_xPanoramiXQueryVersionReq 8 typedef struct { CARD8 type; /* must be X_Reply */ CARD8 pad1; /* unused */ CARD16 sequenceNumber B16; /* last sequence number */ CARD32 length B32; /* 0 */ CARD16 majorVersion B16; CARD16 minorVersion B16; CARD32 pad2 B32; /* unused */ CARD32 pad3 B32; /* unused */ CARD32 pad4 B32; /* unused */ CARD32 pad5 B32; /* unused */ CARD32 pad6 B32; /* unused */ } xPanoramiXQueryVersionReply; #define sz_xPanoramiXQueryVersionReply 32 typedef struct _PanoramiXGetState { CARD8 reqType; /* always PanoramiXReqCode */ CARD8 panoramiXReqType; /* always X_PanoramiXGetState */ CARD16 length B16; CARD32 window B32; } xPanoramiXGetStateReq; #define sz_xPanoramiXGetStateReq 8 typedef struct { BYTE type; BYTE state; CARD16 sequenceNumber B16; CARD32 length B32; CARD32 window B32; CARD32 pad1 B32; /* unused */ CARD32 pad2 B32; /* unused */ CARD32 pad3 B32; /* unused */ CARD32 pad4 B32; /* unused */ CARD32 pad5 B32; /* unused */ } xPanoramiXGetStateReply; #define sz_panoramiXGetStateReply 32 typedef struct _PanoramiXGetScreenCount { CARD8 reqType; /* always PanoramiXReqCode */ CARD8 panoramiXReqType; /* always X_PanoramiXGetScreenCount */ CARD16 length B16; CARD32 window B32; } xPanoramiXGetScreenCountReq; #define sz_xPanoramiXGetScreenCountReq 8 typedef struct { BYTE type; BYTE ScreenCount; CARD16 sequenceNumber B16; CARD32 length B32; CARD32 window B32; CARD32 pad1 B32; /* unused */ CARD32 pad2 B32; /* unused */ CARD32 pad3 B32; /* unused */ CARD32 pad4 B32; /* unused */ CARD32 pad5 B32; /* unused */ } xPanoramiXGetScreenCountReply; #define sz_panoramiXGetScreenCountReply 32 typedef struct _PanoramiXGetScreenSize { CARD8 reqType; /* always PanoramiXReqCode */ CARD8 panoramiXReqType; /* always X_PanoramiXGetState */ CARD16 length B16; CARD32 window B32; CARD32 screen B32; } xPanoramiXGetScreenSizeReq; #define sz_xPanoramiXGetScreenSizeReq 12 typedef struct { BYTE type; CARD8 pad1; CARD16 sequenceNumber B16; CARD32 length B32; CARD32 width B32; CARD32 height B32; CARD32 window B32; CARD32 screen B32; CARD32 pad2 B32; /* unused */ CARD32 pad3 B32; /* unused */ } xPanoramiXGetScreenSizeReply; #define sz_panoramiXGetScreenSizeReply 32 /************ Alternate protocol ******************/ typedef struct { CARD8 reqType; CARD8 panoramiXReqType; CARD16 length B16; } xXineramaIsActiveReq; #define sz_xXineramaIsActiveReq 4 typedef struct { BYTE type; CARD8 pad1; CARD16 sequenceNumber B16; CARD32 length B32; CARD32 state B32; CARD32 pad2 B32; CARD32 pad3 B32; CARD32 pad4 B32; CARD32 pad5 B32; CARD32 pad6 B32; } xXineramaIsActiveReply; #define sz_XineramaIsActiveReply 32 typedef struct { CARD8 reqType; CARD8 panoramiXReqType; CARD16 length B16; } xXineramaQueryScreensReq; #define sz_xXineramaQueryScreensReq 4 typedef struct { BYTE type; CARD8 pad1; CARD16 sequenceNumber B16; CARD32 length B32; CARD32 number B32; CARD32 pad2 B32; CARD32 pad3 B32; CARD32 pad4 B32; CARD32 pad5 B32; CARD32 pad6 B32; } xXineramaQueryScreensReply; #define sz_XineramaQueryScreensReply 32 typedef struct { INT16 x_org B16; INT16 y_org B16; CARD16 width B16; CARD16 height B16; } xXineramaScreenInfo; #define sz_XineramaScreenInfo 8 #endif