618 lines
22 KiB
C
618 lines
22 KiB
C
/*
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* Copyright 2001-2003 Red Hat Inc., Durham, North Carolina.
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*
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation on the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/*
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* Authors:
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* David H. Dawes <dawes@xfree86.org>
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* Kevin E. Martin <kem@redhat.com>
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* Rickard E. (Rik) Faith <faith@redhat.com>
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*/
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/** \file
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* These routines support taking input from devices on the backend
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* (output) displays. \see dmxcommon.c. */
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#ifdef HAVE_DMX_CONFIG_H
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#include <dmx-config.h>
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#endif
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#define DMX_BACKEND_DEBUG 0
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#include "dmxinputinit.h"
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#include "dmxbackend.h"
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#include "dmxcommon.h"
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#include "dmxconsole.h"
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#include "dmxcursor.h"
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#include "dmxprop.h"
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#include "dmxsync.h"
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#include "dmxcb.h" /* For dmxGlobalWidth and dmxGlobalHeight */
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#include "dmxevents.h" /* For dmxGetGlobalPosition */
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#include "ChkNotMaskEv.h"
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#include "inputstr.h"
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#include "input.h"
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#include <X11/keysym.h>
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#include "mipointer.h"
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#include "scrnintstr.h"
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#include "windowstr.h"
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/* Private area for backend devices. */
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typedef struct _myPrivate {
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DMX_COMMON_PRIVATE;
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int myScreen;
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DMXScreenInfo *grabbedScreen;
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int lastX, lastY;
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int centerX, centerY;
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int relative;
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int newscreen;
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int initialized;
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DevicePtr mou, kbd;
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int entered;
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int offX, offY;
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} myPrivate;
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#if DMX_BACKEND_DEBUG
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#define DMXDBG0(f) dmxLog(dmxDebug,f)
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#define DMXDBG1(f,a) dmxLog(dmxDebug,f,a)
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#define DMXDBG2(f,a,b) dmxLog(dmxDebug,f,a,b)
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#define DMXDBG3(f,a,b,c) dmxLog(dmxDebug,f,a,b,c)
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#define DMXDBG4(f,a,b,c,d) dmxLog(dmxDebug,f,a,b,c,d)
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#define DMXDBG5(f,a,b,c,d,e) dmxLog(dmxDebug,f,a,b,c,d,e)
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#define DMXDBG6(f,a,b,c,d,e,g) dmxLog(dmxDebug,f,a,b,c,d,e,g)
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#define DMXDBG7(f,a,b,c,d,e,g,h) dmxLog(dmxDebug,f,a,b,c,d,e,g,h)
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#define DMXDBG8(f,a,b,c,d,e,g,h,i) dmxLog(dmxDebug,f,a,b,c,d,e,g,h,i)
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#define DMXDBG9(f,a,b,c,d,e,g,h,i,j) dmxLog(dmxDebug,f,a,b,c,d,e,g,h,i,j)
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#else
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#define DMXDBG0(f)
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#define DMXDBG1(f,a)
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#define DMXDBG2(f,a,b)
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#define DMXDBG3(f,a,b,c)
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#define DMXDBG4(f,a,b,c,d)
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#define DMXDBG5(f,a,b,c,d,e)
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#define DMXDBG6(f,a,b,c,d,e,g)
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#define DMXDBG7(f,a,b,c,d,e,g,h)
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#define DMXDBG8(f,a,b,c,d,e,g,h,i)
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#define DMXDBG9(f,a,b,c,d,e,g,h,i,j)
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#endif
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/** Create and return a private data structure. */
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pointer dmxBackendCreatePrivate(DeviceIntPtr pDevice)
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{
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GETDMXLOCALFROMPDEVICE;
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myPrivate *priv = xalloc(sizeof(*priv));
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memset(priv, 0, sizeof(*priv));
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priv->dmxLocal = dmxLocal;
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return priv;
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}
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/** Destroy the private data structure. No checking is performed to
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* verify that the structure was actually created by
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* #dmxBackendCreatePrivate. */
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void dmxBackendDestroyPrivate(pointer private)
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{
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if (private) xfree(private);
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}
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static void *dmxBackendTestScreen(DMXScreenInfo *dmxScreen, void *closure)
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{
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long target = (long)closure;
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if (dmxScreen->index == target) return dmxScreen;
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return NULL;
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}
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/* Return non-zero if screen and priv->myScreen are on the same physical
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* backend display (1 if they are the same screen, 2 if they are
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* different screens). Since this is a common operation, the results
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* are cached. The cache is invalidated if \a priv is NULL (this should
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* be done with each server generation and reconfiguration). */
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static int dmxBackendSameDisplay(myPrivate *priv, long screen)
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{
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static myPrivate *oldpriv = NULL;
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static int oldscreen = -1;
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static int retcode = 0;
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if (priv == oldpriv && screen == oldscreen) return retcode;
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if (!priv) { /* Invalidate cache */
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oldpriv = NULL;
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oldscreen = -1;
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retcode = 0;
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return 0;
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}
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if (screen == priv->myScreen) retcode = 1;
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else if (screen < 0 || screen >= dmxNumScreens) retcode = 0;
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else if (dmxPropertyIterate(priv->be,
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dmxBackendTestScreen,
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(void *)screen)) retcode = 2;
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else retcode = 0;
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oldpriv = priv;
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oldscreen = screen;
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return retcode;
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}
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static void *dmxBackendTestEvents(DMXScreenInfo *dmxScreen, void *closure)
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{
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XEvent *X = (XEvent *)closure;
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if (XCheckNotMaskEvent(dmxScreen->beDisplay, ExposureMask, X))
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return dmxScreen;
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return NULL;
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}
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static void *dmxBackendTestMotionEvent(DMXScreenInfo *dmxScreen, void *closure)
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{
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XEvent *X = (XEvent *)closure;
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if (XCheckTypedEvent(dmxScreen->beDisplay, MotionNotify, X))
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return dmxScreen;
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return NULL;
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}
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static DMXScreenInfo *dmxBackendGetEvent(myPrivate *priv, XEvent *X)
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{
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DMXScreenInfo *dmxScreen;
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if ((dmxScreen = dmxPropertyIterate(priv->be, dmxBackendTestEvents, X)))
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return dmxScreen;
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return NULL;
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}
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static DMXScreenInfo *dmxBackendPendingMotionEvent(myPrivate *priv, int save)
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{
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DMXScreenInfo *dmxScreen;
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XEvent N;
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if ((dmxScreen = dmxPropertyIterate(priv->be,
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dmxBackendTestMotionEvent, &N))) {
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if (save) XPutBackEvent(dmxScreen->beDisplay, &N);
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return dmxScreen;
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}
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return NULL;
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}
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static void *dmxBackendTestWindow(DMXScreenInfo *dmxScreen, void *closure)
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{
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Window win = (Window)(long)closure;
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if (dmxScreen->scrnWin == win) return dmxScreen;
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return NULL;
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}
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static DMXScreenInfo *dmxBackendFindWindow(myPrivate *priv, Window win)
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{
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return dmxPropertyIterate(priv->be, dmxBackendTestWindow,
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(void *)(long)win);
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}
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/* If the cursor is over a set of overlapping screens and one of those
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* screens takes backend input, then we want that particular screen to
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* be current, not one of the other ones. */
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static int dmxBackendFindOverlapping(myPrivate *priv, int screen, int x, int y)
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{
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DMXScreenInfo *start = &dmxScreens[screen];
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DMXScreenInfo *pt;
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if (!start->over) return screen;
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for (pt = start->over; /* condition at end of loop */; pt = pt->over) {
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if (pt->index == priv->myScreen
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&& dmxOnScreen(x, y, &dmxScreens[pt->index])) return pt->index;
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if (pt == start) break;
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}
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return screen;
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}
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/* Return non-zero if \a x and \a y are off \a screen. */
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static int dmxBackendOffscreen(int screen, int x, int y)
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{
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DMXScreenInfo *dmxScreen = &dmxScreens[screen];
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return (!dmxOnScreen(x, y, dmxScreen));
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}
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/** This routine is called from #dmxCoreMotion for each motion
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* event. #x and #y are global coordinants. */
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void dmxBackendUpdatePosition(pointer private, int x, int y)
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{
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GETPRIVFROMPRIVATE;
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int screen = miPointerGetScreen(inputInfo.pointer)->myNum;
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DMXScreenInfo *dmxScreen = &dmxScreens[priv->myScreen];
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int oldRelative = priv->relative;
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int topscreen = dmxBackendFindOverlapping(priv, screen, x, y);
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int same = dmxBackendSameDisplay(priv, topscreen);
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int offscreen = dmxBackendOffscreen(priv->myScreen, x, y);
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int offthis = dmxBackendOffscreen(screen, x, y);
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DMXDBG9("dmxBackendUpdatePosition(%d,%d) my=%d mi=%d rel=%d"
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" topscreen=%d same=%d offscreen=%d offthis=%d\n",
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x, y, priv->myScreen, screen, priv->relative,
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topscreen, same, offscreen, offthis);
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if (offscreen) {
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/* If the cursor is off the input screen, it should be moving
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* relative unless it is visible on a screen of the same display
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* (i.e., one that shares the mouse). */
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if (same == 2 && !offthis) {
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if (priv->relative) {
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DMXDBG0(" Off screen, but not absolute\n");
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priv->relative = 0;
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}
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} else {
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if (!priv->relative) {
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DMXDBG0(" Off screen, but not relative\n");
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priv->relative = 1;
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}
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}
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} else {
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if (topscreen != screen) {
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DMXDBG2(" Using screen %d instead of %d (from mi)\n",
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topscreen, screen);
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}
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if (same) {
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if (priv->relative) {
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DMXDBG0(" On screen, but not absolute\n");
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priv->relative = 0;
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}
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} else {
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if (!priv->relative) {
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DMXDBG0(" Not on screen, but not relative\n");
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priv->relative = 1;
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}
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}
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}
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if (oldRelative != priv->relative) {
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DMXDBG2(" Do switch, relative=%d same=%d\n",
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priv->relative, same);
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/* Discard all pre-switch events */
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dmxSync(dmxScreen, TRUE);
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while (dmxBackendPendingMotionEvent(priv, FALSE));
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if (dmxInput->console && offscreen) {
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/* Our special case is a console window and a backend window
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* share a display. In this case, the cursor is either on
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* the backend window (taking absolute input), or not (in
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* which case the cursor needs to be in the console
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* window). */
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if (priv->grabbedScreen) {
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DMXDBG2(" *** force ungrab on %s, display=%p\n",
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priv->grabbedScreen->name,
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priv->grabbedScreen->beDisplay);
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XUngrabPointer(priv->grabbedScreen->beDisplay, CurrentTime);
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dmxSync(priv->grabbedScreen, TRUE);
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priv->grabbedScreen = NULL;
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}
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DMXDBG0(" Capturing console\n");
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dmxConsoleCapture(dmxInput);
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} else {
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priv->newscreen = 1;
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if (priv->relative && !dmxInput->console) {
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DMXDBG5(" Hide cursor; warp from %d,%d to %d,%d on %d\n",
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priv->lastX, priv->lastY, priv->centerX, priv->centerY,
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priv->myScreen);
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dmxConsoleUncapture(dmxInput);
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dmxHideCursor(dmxScreen);
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priv->lastX = priv->centerX;
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priv->lastY = priv->centerY;
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XWarpPointer(priv->display, None, priv->window,
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0, 0, 0, 0, priv->lastX, priv->lastY);
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dmxSync(dmxScreen, TRUE);
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} else {
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DMXDBG0(" Check cursor\n");
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dmxCheckCursor();
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}
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}
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}
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}
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/** Get events from the X queue on the backend servers and put the
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* events into the DMX event queue. */
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void dmxBackendCollectEvents(DevicePtr pDev,
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dmxMotionProcPtr motion,
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dmxEnqueueProcPtr enqueue,
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dmxCheckSpecialProcPtr checkspecial,
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DMXBlockType block)
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{
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GETPRIVFROMPDEV;
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GETDMXINPUTFROMPRIV;
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XEvent X;
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DMXScreenInfo *dmxScreen;
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int left = 0;
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int entered = priv->entered;
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int ignoreLeave = 0;
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int v[2];
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int retcode;
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while ((dmxScreen = dmxBackendGetEvent(priv, &X))) {
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switch (X.type) {
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case EnterNotify:
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dmxCommonSaveState(priv);
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if (entered++)
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continue;
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priv->entered = 1;
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ignoreLeave = 1;
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DMXDBG5("dmxBackendCollectEvents: Enter %lu %d,%d; GRAB %s %p\n",
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X.xcrossing.root, X.xcrossing.x, X.xcrossing.y,
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dmxScreen->name, dmxScreen->beDisplay);
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XRaiseWindow(dmxScreen->beDisplay, dmxScreen->scrnWin);
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priv->grabbedScreen = dmxScreen;
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if ((retcode = XGrabPointer(dmxScreen->beDisplay,
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dmxScreen->scrnWin,
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True, 0, GrabModeAsync,
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GrabModeAsync, None, None,
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CurrentTime))) {
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dmxLog(dmxError,
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"XGrabPointer failed during backend enter (%d)\n",
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retcode);
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}
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break;
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case LeaveNotify:
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if (ignoreLeave) {
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ignoreLeave = 0;
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continue;
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}
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dmxCommonRestoreState(priv);
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if (left++)
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continue;
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DMXDBG7("dmxBackendCollectEvents: Leave %lu %d,%d %d %d %s %s\n",
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X.xcrossing.root, X.xcrossing.x, X.xcrossing.y,
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X.xcrossing.detail, X.xcrossing.focus,
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priv->grabbedScreen ? "UNGRAB" : "",
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dmxScreen->name);
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if (priv->grabbedScreen) {
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XUngrabPointer(priv->grabbedScreen->beDisplay, CurrentTime);
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dmxSync(priv->grabbedScreen, TRUE);
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priv->grabbedScreen = NULL;
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}
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break;
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case MotionNotify:
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DMXDBG9("dmxBackendCollectEvents: MotionNotify %d/%d (mi %d)"
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" newscreen=%d: %d %d (e=%d; last=%d,%d)\n",
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dmxScreen->index, priv->myScreen,
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miPointerCurrentScreen()->myNum,
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priv->newscreen,
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X.xmotion.x, X.xmotion.y,
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entered, priv->lastX, priv->lastY);
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if (dmxBackendPendingMotionEvent(priv, TRUE))
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continue;
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if (!(dmxScreen = dmxBackendFindWindow(priv, X.xmotion.window)))
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dmxLog(dmxFatal,
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" Event on non-existant window %lu\n",
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X.xmotion.window);
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if (!priv->relative || dmxInput->console) {
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int newX = X.xmotion.x - dmxScreen->rootX;
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int newY = X.xmotion.y - dmxScreen->rootY;
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if (!priv->newscreen) {
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int width = dmxScreen->rootWidth;
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int height = dmxScreen->rootHeight;
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if (!newX) newX = -1;
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if (newX == width - 1) newX = width;
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if (!newY) newY = -1;
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if (newY == height - 1) newY = height;
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}
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priv->newscreen = 0;
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v[0] = dmxScreen->rootXOrigin + newX;
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v[1] = dmxScreen->rootYOrigin + newY;
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DMXDBG8(" Absolute move: %d,%d (r=%dx%d+%d+%d s=%dx%d)\n",
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v[0], v[1],
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priv->be->rootWidth, priv->be->rootHeight,
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priv->be->rootX, priv->be->rootY,
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priv->be->scrnWidth, priv->be->scrnHeight);
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motion(priv->mou, v, 0, 2, DMX_ABSOLUTE, block);
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priv->entered = 0;
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} else {
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int newX = priv->lastX - X.xmotion.x;
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int newY = priv->lastY - X.xmotion.y;
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priv->lastX = X.xmotion.x;
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priv->lastY = X.xmotion.y;
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v[0] = newX;
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v[1] = newY;
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DMXDBG2(" Relative move: %d, %d\n", v[0], v[1]);
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motion(priv->mou, v, 0, 2, DMX_RELATIVE, block);
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}
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if (entered && priv->relative) {
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DMXDBG4(" **** Relative %d %d instead of absolute %d %d\n",
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v[0], v[1],
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(dmxScreen->rootXOrigin + X.xmotion.x
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- dmxScreen->rootX),
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(dmxScreen->rootYOrigin + X.xmotion.y
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- dmxScreen->rootY));
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}
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break;
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case KeyPress:
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case KeyRelease:
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enqueue(priv->kbd, X.type, X.xkey.keycode, 0, NULL, block);
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break;
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case ButtonPress:
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case ButtonRelease:
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/* fall-through */
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default:
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/* Pass the whole event here, because
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* this may be an extension event. */
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enqueue(priv->mou, X.type, X.xbutton.button, 0, &X, block);
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break;
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}
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}
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}
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/** Called after input events are processed from the DMX queue. No
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* event processing actually takes place here, but this is a convenient
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* place to update the pointer. */
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void dmxBackendProcessInput(pointer private)
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{
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GETPRIVFROMPRIVATE;
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DMXDBG6("dmxBackendProcessInput: myScreen=%d relative=%d"
|
|
" last=%d,%d center=%d,%d\n",
|
|
priv->myScreen, priv->relative,
|
|
priv->lastX, priv->lastY,
|
|
priv->centerX, priv->centerY);
|
|
|
|
if (priv->relative
|
|
&& !dmxInput->console
|
|
&& (priv->lastX != priv->centerX || priv->lastY != priv->centerY)) {
|
|
DMXDBG4(" warping pointer from last=%d,%d to center=%d,%d\n",
|
|
priv->lastX, priv->lastY, priv->centerX, priv->centerY);
|
|
priv->lastX = priv->centerX;
|
|
priv->lastY = priv->centerY;
|
|
XWarpPointer(priv->display, None, priv->window,
|
|
0, 0, 0, 0, priv->lastX, priv->lastY);
|
|
dmxSync(&dmxScreens[priv->myScreen], TRUE);
|
|
}
|
|
}
|
|
|
|
static void dmxBackendComputeCenter(myPrivate *priv)
|
|
{
|
|
int centerX;
|
|
int centerY;
|
|
|
|
centerX = priv->be->rootWidth / 2 + priv->be->rootX;
|
|
centerY = priv->be->rootHeight / 2 + priv->be->rootY;
|
|
|
|
if (centerX > priv->be->rootWidth) centerX = priv->be->rootWidth - 1;
|
|
if (centerY > priv->be->rootHeight) centerY = priv->be->rootHeight - 1;
|
|
if (centerX < 1) centerX = 1;
|
|
if (centerY < 1) centerY = 1;
|
|
|
|
priv->centerX = centerX;
|
|
priv->centerY = centerY;
|
|
}
|
|
|
|
static DMXScreenInfo *dmxBackendInitPrivate(DevicePtr pDev)
|
|
{
|
|
GETPRIVFROMPDEV;
|
|
DMXInputInfo *dmxInput = &dmxInputs[dmxLocal->inputIdx];
|
|
DMXScreenInfo *dmxScreen;
|
|
int i;
|
|
|
|
/* Fill in myPrivate */
|
|
for (i = 0,dmxScreen = &dmxScreens[0]; i<dmxNumScreens; i++,dmxScreen++) {
|
|
if (dmxPropertySameDisplay(dmxScreen, dmxInput->name)) {
|
|
priv->display = dmxScreen->beDisplay;
|
|
priv->window = dmxScreen->scrnWin;
|
|
priv->be = dmxScreen;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (i >= dmxNumScreens)
|
|
dmxLog(dmxFatal,
|
|
"%s is not an existing backend display - cannot initialize\n",
|
|
dmxInput->name);
|
|
|
|
return dmxScreen;
|
|
}
|
|
|
|
/** Re-initialized the backend device described by \a pDev (after a
|
|
* reconfig). */
|
|
void dmxBackendLateReInit(DevicePtr pDev)
|
|
{
|
|
GETPRIVFROMPDEV;
|
|
int x, y;
|
|
|
|
DMXDBG1("dmxBackendLateReInit miPointerCurrentScreen() = %p\n",
|
|
miPointerCurrentScreen());
|
|
|
|
dmxBackendSameDisplay(NULL, 0); /* Invalidate cache */
|
|
dmxBackendInitPrivate(pDev);
|
|
dmxBackendComputeCenter(priv);
|
|
dmxGetGlobalPosition(&x, &y);
|
|
dmxInvalidateGlobalPosition(); /* To force event processing */
|
|
dmxBackendUpdatePosition(priv, x, y);
|
|
}
|
|
|
|
/** Initialized the backend device described by \a pDev. */
|
|
void dmxBackendInit(DevicePtr pDev)
|
|
{
|
|
GETPRIVFROMPDEV;
|
|
DMXScreenInfo *dmxScreen;
|
|
|
|
dmxBackendSameDisplay(NULL, 0); /* Invalidate cache */
|
|
|
|
if (dmxLocal->type == DMX_LOCAL_MOUSE) priv->mou = pDev;
|
|
if (dmxLocal->type == DMX_LOCAL_KEYBOARD) priv->kbd = pDev;
|
|
if (priv->initialized++) return; /* Only do once for mouse/keyboard pair */
|
|
|
|
dmxScreen = dmxBackendInitPrivate(pDev);
|
|
|
|
/* Finish initialization using computed values or constants. */
|
|
dmxBackendComputeCenter(priv);
|
|
priv->eventMask = (EnterWindowMask|LeaveWindowMask);
|
|
priv->myScreen = dmxScreen->index;
|
|
priv->lastX = priv->centerX;
|
|
priv->lastY = priv->centerY;
|
|
priv->relative = 0;
|
|
priv->newscreen = 0;
|
|
}
|
|
|
|
/** Get information about the backend pointer (for initialization). */
|
|
void dmxBackendMouGetInfo(DevicePtr pDev, DMXLocalInitInfoPtr info)
|
|
{
|
|
const DMXScreenInfo *dmxScreen = dmxBackendInitPrivate(pDev);
|
|
|
|
info->buttonClass = 1;
|
|
dmxCommonMouGetMap(pDev, info->map, &info->numButtons);
|
|
info->valuatorClass = 1;
|
|
info->numRelAxes = 2;
|
|
info->minval[0] = 0;
|
|
info->minval[1] = 0;
|
|
info->maxval[0] = dmxScreen->beWidth;
|
|
info->maxval[1] = dmxScreen->beHeight;
|
|
info->res[0] = 1;
|
|
info->minres[0] = 0;
|
|
info->maxres[0] = 1;
|
|
info->ptrFeedbackClass = 1;
|
|
}
|
|
|
|
/** Get information about the backend keyboard (for initialization). */
|
|
void dmxBackendKbdGetInfo(DevicePtr pDev, DMXLocalInitInfoPtr info)
|
|
{
|
|
dmxCommonKbdGetInfo(pDev, info);
|
|
info->keyboard = 1;
|
|
info->keyClass = 1;
|
|
dmxCommonKbdGetMap(pDev, &info->keySyms, info->modMap);
|
|
info->freemap = 1;
|
|
info->focusClass = 1;
|
|
info->kbdFeedbackClass = 1;
|
|
}
|
|
|
|
/** Process #DMXFunctionType functions. The only function handled here
|
|
* is to acknowledge a pending server shutdown. */
|
|
int dmxBackendFunctions(pointer private, DMXFunctionType function)
|
|
{
|
|
switch (function) {
|
|
case DMX_FUNCTION_TERMINATE:
|
|
return 1;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|