Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 716 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/hw/dmx/input/dmxevents.c b/nx-X11/programs/Xserver/hw/dmx/input/dmxevents.c
new file mode 100644
index 000000000..5316f0fdc
--- /dev/null
+++ b/nx-X11/programs/Xserver/hw/dmx/input/dmxevents.c
@@ -0,0 +1,716 @@
+/* $XFree86$ */
+/*
+ * Copyright 2002-2003 Red Hat Inc., Durham, North Carolina.
+ *
+ * All Rights Reserved.
+ *
+ * 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 on the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) 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
+ * NON-INFRINGEMENT.  IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
+ * BE LIABLE FOR ANY CLAIM, 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.
+ */
+
+/*
+ * Authors:
+ *   Rickard E. (Rik) Faith <faith@redhat.com>
+ *
+ */
+
+/** \file
+ * Provide support and helper functions for enqueing events received by
+ * the low-level input drivers. */
+
+#ifdef HAVE_DMX_CONFIG_H
+#include <dmx-config.h>
+#endif
+
+#define DMX_EVENTS_DEBUG 0
+
+#include "dmxinputinit.h"
+#include "dmxevents.h"
+#include "dmxcb.h"
+#include "dmxcommon.h"
+#include "dmxcursor.h"
+#include "dmxmotion.h"
+#include "dmxeq.h"
+#include "dmxsigio.h"
+#include "dmxmap.h"
+
+#include <X11/keysym.h>
+#include "opaque.h"
+#include "inputstr.h"
+#include "mipointer.h"
+
+#ifdef XINPUT
+#include "XIstubs.h"
+#endif
+
+static int  dmxGlobalX, dmxGlobalY; /* Global cursor position */
+static int  dmxGlobalInvalid;       /* Flag indicating dmxCoreMotion
+                                     * should move the mouse anyway. */
+
+#if DMX_EVENTS_DEBUG
+#define DMXDBG0(f)               dmxLog(dmxDebug,f)
+#define DMXDBG1(f,a)             dmxLog(dmxDebug,f,a)
+#define DMXDBG2(f,a,b)           dmxLog(dmxDebug,f,a,b)
+#define DMXDBG3(f,a,b,c)         dmxLog(dmxDebug,f,a,b,c)
+#define DMXDBG4(f,a,b,c,d)       dmxLog(dmxDebug,f,a,b,c,d)
+#define DMXDBG5(f,a,b,c,d,e)     dmxLog(dmxDebug,f,a,b,c,d,e)
+#define DMXDBG6(f,a,b,c,d,e,g)   dmxLog(dmxDebug,f,a,b,c,d,e,g)
+#define DMXDBG7(f,a,b,c,d,e,g,h) dmxLog(dmxDebug,f,a,b,c,d,e,g,h)
+#else
+#define DMXDBG0(f)
+#define DMXDBG1(f,a)
+#define DMXDBG2(f,a,b)
+#define DMXDBG3(f,a,b,c)
+#define DMXDBG4(f,a,b,c,d)
+#define DMXDBG5(f,a,b,c,d,e)
+#define DMXDBG6(f,a,b,c,d,e,g)
+#define DMXDBG7(f,a,b,c,d,e,g,h)
+#endif
+
+static int dmxApplyFunctions(DMXInputInfo *dmxInput, DMXFunctionType f)
+{
+    int i;
+    int rc = 0;
+
+    for (i = 0; i < dmxInput->numDevs; i+= dmxInput->devs[i]->binding)
+        if (dmxInput->devs[i]->functions)
+            rc += dmxInput->devs[i]->functions(dmxInput->devs[i]->private, f);
+    return rc;
+}
+
+static int dmxCheckFunctionKeys(DMXLocalInputInfoPtr dmxLocal,
+                                int type,
+                                KeySym keySym)
+{
+    DMXInputInfo   *dmxInput = &dmxInputs[dmxLocal->inputIdx];
+    unsigned short state = 0;
+    
+    if (dmxLocal->sendsCore)
+        state = dmxLocalCoreKeyboard->pDevice->key->state;
+    else if (dmxLocal->pDevice->key)
+        state = dmxLocal->pDevice->key->state;
+    
+    DMXDBG3("dmxCheckFunctionKeys: keySym=0x%04x %s state=0x%04x\n",
+            keySym, type == KeyPress ? "press" : "release", state);
+
+    if ((state & (ControlMask|Mod1Mask)) != (ControlMask|Mod1Mask)) return 0;
+
+    switch (keySym) {
+    case XK_g:
+        if (type == KeyPress)
+            dmxApplyFunctions(dmxInput, DMX_FUNCTION_GRAB);
+        return 1;
+    case XK_f:
+        if (type == KeyPress)
+            dmxApplyFunctions(dmxInput, DMX_FUNCTION_FINE);
+        return 1;
+    case XK_q:
+        if (type == KeyPress && dmxLocal->sendsCore)
+            if (dmxApplyFunctions(dmxInput, DMX_FUNCTION_TERMINATE)) {
+                dmxLog(dmxInfo, "User request for termination\n");
+                dispatchException |= DE_TERMINATE;
+            }
+        return 1;
+    }
+    
+    return 0;
+}
+
+#ifdef XINPUT
+static void dmxEnqueueExtEvent(DMXLocalInputInfoPtr dmxLocal, xEvent *e,
+                               DMXBlockType block)
+{
+    xEvent                 xE[2];
+    deviceKeyButtonPointer *xev      = (deviceKeyButtonPointer *)xE;
+    deviceValuator         *xv       = (deviceValuator *)xev+1;
+    DeviceIntPtr           pDevice   = dmxLocal->pDevice;
+    DMXInputInfo           *dmxInput = &dmxInputs[dmxLocal->inputIdx];
+    int                    type      = e->u.u.type;
+
+    switch (e->u.u.type) {
+    case KeyPress:      type = DeviceKeyPress;      break;
+    case KeyRelease:    type = DeviceKeyRelease;    break;
+    case ButtonPress:   type = DeviceButtonPress;   break;
+    case ButtonRelease: type = DeviceButtonRelease; break;
+    case MotionNotify:
+        dmxLog(dmxError,
+               "dmxEnqueueExtEvent: MotionNotify not allowed here\n");
+        return;
+    default:
+        if (e->u.u.type == ProximityIn || e->u.u.type == ProximityOut) break;
+        dmxLogInput(dmxInput,
+                    "dmxEnqueueExtEvent: Unhandled %s event (%d)\n",
+                    e->u.u.type >= LASTEvent ? "extension" : "non-extension",
+                    e->u.u.type);
+        return;
+    }
+
+    xev->type          = type;
+    xev->detail        = e->u.u.detail;
+    xev->deviceid      = pDevice->id | MORE_EVENTS;
+    xev->time          = e->u.keyButtonPointer.time;
+
+    xv->type           = DeviceValuator;
+    xv->deviceid       = pDevice->id;
+    xv->num_valuators  = 0;
+    xv->first_valuator = 0;
+
+    if (block) dmxSigioBlock();
+    dmxeqEnqueue(xE);
+    if (block) dmxSigioUnblock();
+}
+#endif
+
+DMXScreenInfo *dmxFindFirstScreen(int x, int y)
+{
+    int i;
+
+    for (i = 0; i < dmxNumScreens; i++) {
+        DMXScreenInfo *dmxScreen = &dmxScreens[i];
+        if (dmxOnScreen(x, y, dmxScreen)) return dmxScreen;
+    }
+    return NULL;
+}
+
+void dmxCoreMotion(int x, int y, int delta, DMXBlockType block)
+{
+    DMXScreenInfo *dmxScreen;
+    DMXInputInfo  *dmxInput;
+    ScreenPtr     pScreen;
+    int           localX;
+    int           localY;
+    int           i;
+
+    if (!dmxGlobalInvalid && dmxGlobalX == x && dmxGlobalY == y) return;
+    
+    DMXDBG5("dmxCoreMotion(%d,%d,%d) dmxGlobalX=%d dmxGlobalY=%d\n",
+            x, y, delta, dmxGlobalX, dmxGlobalY);
+
+    dmxGlobalInvalid = 0;
+    dmxGlobalX       = x;
+    dmxGlobalY       = y;
+
+    if (dmxGlobalX < 0)                dmxGlobalX = 0;
+    if (dmxGlobalY < 0)                dmxGlobalY = 0;
+    if (dmxGlobalX >= dmxGlobalWidth)  dmxGlobalX = dmxGlobalWidth  + delta -1;
+    if (dmxGlobalY >= dmxGlobalHeight) dmxGlobalY = dmxGlobalHeight + delta -1;
+    
+    if ((dmxScreen = dmxFindFirstScreen(dmxGlobalX, dmxGlobalY))) {
+        localX = dmxGlobalX - dmxScreen->rootXOrigin;
+        localY = dmxGlobalY - dmxScreen->rootYOrigin;
+        if ((pScreen = miPointerCurrentScreen())
+            && pScreen->myNum == dmxScreen->index) {
+                                /* Screen is old screen */
+            if (block) dmxSigioBlock();
+            miPointerAbsoluteCursor(localX, localY, GetTimeInMillis());
+            if (block) dmxSigioUnblock();
+        } else {
+                                /* Screen is new */
+            DMXDBG4("   New screen: old=%d new=%d localX=%d localY=%d\n",
+                    pScreen->myNum, dmxScreen->index, localX, localY);
+            if (block) dmxSigioBlock();
+            dmxeqProcessInputEvents();
+            miPointerSetNewScreen(dmxScreen->index, localX, localY);
+            miPointerAbsoluteCursor(localX, localY, GetTimeInMillis());
+            if (block) dmxSigioUnblock();
+        }
+        miPointerPosition(&localX, &localY);
+
+        if ((pScreen = miPointerCurrentScreen())) {
+            dmxGlobalX = localX + dmxScreens[pScreen->myNum].rootXOrigin;
+            dmxGlobalY = localY + dmxScreens[pScreen->myNum].rootYOrigin;
+            DMXDBG6("   Moved to dmxGlobalX=%d dmxGlobalY=%d"
+                    " on screen index=%d/%d localX=%d localY=%d\n",
+                    dmxGlobalX, dmxGlobalY,
+                    dmxScreen ? dmxScreen->index : -1, pScreen->myNum,
+                    localX, localY);
+        }
+    }
+                                /* Send updates down to all core input
+                                 * drivers */
+    for (i = 0, dmxInput = &dmxInputs[0]; i < dmxNumInputs; i++, dmxInput++) {
+        int j;
+
+        for (j = 0; j < dmxInput->numDevs; j += dmxInput->devs[j]->binding)
+            if (!dmxInput->detached
+                && dmxInput->devs[j]->sendsCore
+                && dmxInput->devs[j]->update_position)
+                dmxInput->devs[j]->update_position(dmxInput->devs[j]->private,
+                                                   dmxGlobalX, dmxGlobalY);
+    }
+    if (!dmxScreen) ProcessInputEvents();
+}
+
+#ifdef XINPUT
+#define DMX_MAX_AXES 32         /* Max axes reported by this routine */
+static void dmxExtMotion(DMXLocalInputInfoPtr dmxLocal,
+                         int *v, int firstAxis, int axesCount,
+                         DMXMotionType type, DMXBlockType block)
+{
+    DeviceIntPtr           pDevice = dmxLocal->pDevice;
+    xEvent                 xE[2 * DMX_MAX_AXES/6];
+    deviceKeyButtonPointer *xev    = (deviceKeyButtonPointer *)xE;
+    deviceValuator         *xv     = (deviceValuator *)xev+1;
+    int                    thisX   = 0;
+    int                    thisY   = 0;
+    int                    i;
+    int                    count;
+
+    memset(xE, 0, sizeof(xE));
+
+    if (axesCount > DMX_MAX_AXES) axesCount = DMX_MAX_AXES;
+
+    if (!pDevice->valuator->mode && axesCount == 2) {
+                                /* The dmx console is a relative mode
+                                 * device that sometimes reports
+                                 * absolute motion.  It only has two
+                                 * axes. */
+        if (type == DMX_RELATIVE) {
+            thisX = -v[0];
+            thisY = -v[1];
+            dmxLocal->lastX += thisX;
+            dmxLocal->lastY += thisY;
+            if (dmxLocal->update_position)
+                dmxLocal->update_position(dmxLocal->private,
+                                          dmxLocal->lastX, dmxLocal->lastY);
+        } else {                    /* Convert to relative */
+            if (dmxLocal->lastX || dmxLocal->lastY) {
+                thisX = v[0] - dmxLocal->lastX;
+                thisY = v[1] - dmxLocal->lastY;
+            }
+            dmxLocal->lastX = v[0];
+            dmxLocal->lastY = v[1];
+        }
+        v[0] = thisX;
+        v[1] = thisY;
+    }
+
+    if (axesCount <= 6) {
+                                /* Optimize for the common case when
+                                 * only 1 or 2 axes change. */
+            xev->time          = GetTimeInMillis();
+            xev->type          = DeviceMotionNotify;
+            xev->detail        = 0;
+            xev->deviceid      = pDevice->id | MORE_EVENTS;
+            
+            xv->type           = DeviceValuator;
+            xv->deviceid       = pDevice->id;
+            xv->num_valuators  = axesCount;
+            xv->first_valuator = firstAxis;
+            switch (xv->num_valuators) {
+            case 6: xv->valuator5 = v[5];
+            case 5: xv->valuator4 = v[4];
+            case 4: xv->valuator3 = v[3];
+            case 3: xv->valuator2 = v[2];
+            case 2: xv->valuator1 = v[1];
+            case 1: xv->valuator0 = v[0];
+            }
+            count              = 2;
+    } else {
+        for (i = 0, count = 0; i < axesCount; i += 6) {
+            xev->time          = GetTimeInMillis();
+            xev->type          = DeviceMotionNotify;
+            xev->detail        = 0;
+            xev->deviceid      = pDevice->id | MORE_EVENTS;
+            xev               += 2;
+            
+            xv->type           = DeviceValuator;
+            xv->deviceid       = pDevice->id;
+            xv->num_valuators  = (i+6 >= axesCount ? axesCount - i : 6);
+            xv->first_valuator = firstAxis + i;
+            switch (xv->num_valuators) {
+            case 6: xv->valuator5 = v[i+5];
+            case 5: xv->valuator4 = v[i+4];
+            case 4: xv->valuator3 = v[i+3];
+            case 3: xv->valuator2 = v[i+2];
+            case 2: xv->valuator1 = v[i+1];
+            case 1: xv->valuator0 = v[i+0];
+            }
+            xv                += 2;
+            count             += 2;
+        }
+    }
+
+    if (block) dmxSigioBlock();
+    dmxPointerPutMotionEvent(pDevice, firstAxis, axesCount, v, xev->time);
+    dmxeqEnqueue(xE);
+    if (block) dmxSigioUnblock();
+}
+
+static int dmxTranslateAndEnqueueExtEvent(DMXLocalInputInfoPtr dmxLocal,
+                                          XEvent *e, DMXBlockType block)
+{
+    xEvent                 xE[2];
+    deviceKeyButtonPointer *xev    = (deviceKeyButtonPointer *)xE;
+    deviceValuator         *xv     = (deviceValuator *)xev+1;
+    int                    type;
+    int                    event   = -1;
+    XDeviceKeyEvent        *ke     = (XDeviceKeyEvent *)e;
+    XDeviceMotionEvent     *me     = (XDeviceMotionEvent *)e;
+
+    if (!e) return -1;          /* No extended event passed, cannot handle */
+    
+    if ((XID)dmxLocal->deviceId != ke->deviceid) {
+                                /* Search for the correct dmxLocal,
+                                 * since backend and console events are
+                                 * picked up for the first device on
+                                 * that X server. */
+        int i;
+        DMXInputInfo *dmxInput = &dmxInputs[dmxLocal->inputIdx];
+        for (i = 0; i < dmxInput->numDevs; i++) {
+            dmxLocal = dmxInput->devs[i];
+            if ((XID)dmxLocal->deviceId == ke->deviceid) break;
+        }
+    }
+
+    if ((XID)dmxLocal->deviceId != ke->deviceid
+        || (type = dmxMapLookup(dmxLocal, e->type)) < 0)
+        return -1;    /* No mapping, so this event is unhandled */
+
+    switch (type) {
+    case XI_DeviceValuator:          event = DeviceValuator;          break;
+    case XI_DeviceKeyPress:          event = DeviceKeyPress;          break;
+    case XI_DeviceKeyRelease:        event = DeviceKeyRelease;        break;
+    case XI_DeviceButtonPress:       event = DeviceButtonPress;       break;
+    case XI_DeviceButtonRelease:     event = DeviceButtonRelease;     break;
+    case XI_DeviceMotionNotify:      event = DeviceMotionNotify;      break;
+    case XI_DeviceFocusIn:           event = DeviceFocusIn;           break;
+    case XI_DeviceFocusOut:          event = DeviceFocusOut;          break;
+    case XI_ProximityIn:             event = ProximityIn;             break;
+    case XI_ProximityOut:            event = ProximityOut;            break;
+    case XI_DeviceStateNotify:       event = DeviceStateNotify;       break;
+    case XI_DeviceMappingNotify:     event = DeviceMappingNotify;     break;
+    case XI_ChangeDeviceNotify:      event = ChangeDeviceNotify;      break;
+    case XI_DeviceKeystateNotify:    event = DeviceStateNotify;       break;
+    case XI_DeviceButtonstateNotify: event = DeviceStateNotify;       break;
+    }
+
+    switch (type) {
+    case XI_DeviceKeyPress: 
+    case XI_DeviceKeyRelease:
+    case XI_DeviceButtonPress:
+    case XI_DeviceButtonRelease:
+    case XI_ProximityIn:
+    case XI_ProximityOut:
+        xev->type          = event;
+        xev->detail        = ke->keycode; /* same as ->button */
+        xev->deviceid      = dmxLocal->pDevice->id | MORE_EVENTS;
+        xev->time          = GetTimeInMillis();
+
+        xv->type           = DeviceValuator;
+        xv->deviceid       = dmxLocal->pDevice->id;
+        xv->num_valuators  = ke->axes_count;
+        xv->first_valuator = ke->first_axis;
+        xv->valuator0      = ke->axis_data[0];
+        xv->valuator1      = ke->axis_data[1];
+        xv->valuator2      = ke->axis_data[2];
+        xv->valuator3      = ke->axis_data[3];
+        xv->valuator4      = ke->axis_data[4];
+        xv->valuator5      = ke->axis_data[5];
+
+        if (block) dmxSigioBlock();
+        dmxeqEnqueue(xE);
+        if (block) dmxSigioUnblock();
+        break;
+
+    case XI_DeviceMotionNotify:
+        dmxExtMotion(dmxLocal, me->axis_data, me->first_axis, me->axes_count,
+                     DMX_ABSOLUTE, block);
+        break;
+    case XI_DeviceFocusIn:
+    case XI_DeviceFocusOut:
+    case XI_DeviceStateNotify:
+    case XI_DeviceMappingNotify:
+    case XI_ChangeDeviceNotify:
+    case XI_DeviceKeystateNotify:
+    case XI_DeviceButtonstateNotify:
+                                /* These are ignored, since DMX will
+                                 * generate its own events of these
+                                 * types, as necessary.
+
+                                 * Perhaps ChangeDeviceNotify should
+                                 * generate an error, because it is
+                                 * unexpected? */
+        break;
+    case XI_DeviceValuator:
+    default:
+        dmxLog(dmxWarning,
+               "XInput extension event (remote=%d -> zero-based=%d)"
+               " not supported yet\n", e->type, type);
+        return -1;
+    }
+    return 0;
+}
+#endif
+
+static int dmxGetButtonMapping(DMXLocalInputInfoPtr dmxLocal, int button)
+{
+    ButtonClassPtr b = dmxLocal->pDevice->button;
+
+    if (button > b->numButtons) { /* This shouldn't happen. */
+        dmxLog(dmxWarning, "Button %d pressed, but only %d buttons?!?\n",
+               button, b->numButtons);
+        return button;
+    }
+    return b->map[button];
+}
+
+/** Return DMX's notion of the pointer position in the global coordinate
+ * space. */
+void dmxGetGlobalPosition(int *x, int *y)
+{
+    *x = dmxGlobalX;
+    *y = dmxGlobalY;
+}
+
+/** Invalidate the global position for #dmxCoreMotion. */
+void dmxInvalidateGlobalPosition(void)
+{
+    dmxGlobalInvalid = 1;
+}
+
+/** Enqueue a motion event for \a pDev.  The \a v vector has length \a
+ * axesCount, and contains values for each of the axes, starting at \a
+ * firstAxes.
+ *
+ * The \a type of the motion may be \a DMX_RELATIVE, \a DMX_ABSOLUTE, or
+ * \a DMX_ABSOLUTE_CONFINED (in the latter case, the pointer will not be
+ * allowed to move outside the global boundaires).
+ *
+ * If \a block is set to \a DMX_BLOCK, then the SIGIO handler will be
+ * blocked around calls to #dmxeqEnqueue(). */
+void dmxMotion(DevicePtr pDev, int *v, int firstAxes, int axesCount,
+               DMXMotionType type, DMXBlockType block)
+{
+#ifdef XINPUT
+    GETDMXLOCALFROMPDEV;
+
+    if (!dmxLocal->sendsCore) {
+        dmxExtMotion(dmxLocal, v, firstAxes, axesCount, type, block);
+        return;
+    }
+#endif
+    if (axesCount == 2) switch (type) {
+      case DMX_RELATIVE:          dmxCoreMotion(dmxGlobalX - v[0],
+                                                dmxGlobalY - v[1],
+                                                0, block);              break;
+      case DMX_ABSOLUTE:          dmxCoreMotion(v[0], v[1], 0, block);  break;
+      case DMX_ABSOLUTE_CONFINED: dmxCoreMotion(v[0], v[1], -1, block); break;
+    }
+}
+
+static KeySym dmxKeyCodeToKeySym(DMXLocalInputInfoPtr dmxLocal,
+                                 KeyCode keyCode)
+{
+    KeySymsPtr pKeySyms = NULL;
+
+    if (!dmxLocal || !dmxLocal->pDevice || !dmxLocal->pDevice->key)
+        return NoSymbol;
+    pKeySyms = &dmxLocal->pDevice->key->curKeySyms;
+    if (!pKeySyms) return NoSymbol;
+    
+    if (keyCode > pKeySyms->minKeyCode && keyCode <= pKeySyms->maxKeyCode) {
+        DMXDBG2("dmxKeyCodeToKeySym: Translated keyCode=%d to keySym=0x%04x\n",
+                keyCode,
+                pKeySyms->map[(keyCode - pKeySyms->minKeyCode)
+                              * pKeySyms->mapWidth]);
+               
+        return pKeySyms->map[(keyCode - pKeySyms->minKeyCode)
+                             * pKeySyms->mapWidth];
+    }
+    return NoSymbol;
+}
+
+static KeyCode dmxKeySymToKeyCode(DMXLocalInputInfoPtr dmxLocal, KeySym keySym,
+                                  int tryFirst)
+{
+    KeySymsPtr pKeySyms = &dmxLocal->pDevice->key->curKeySyms;
+    int        i;
+
+                                /* Optimize for similar maps */
+    if (tryFirst >= pKeySyms->minKeyCode
+        && tryFirst <= pKeySyms->maxKeyCode
+        && pKeySyms->map[(tryFirst - pKeySyms->minKeyCode)
+                         * pKeySyms->mapWidth] == keySym)
+        return tryFirst;
+
+    for (i = pKeySyms->minKeyCode; i <= pKeySyms->maxKeyCode; i++) {
+        if (pKeySyms->map[(i - pKeySyms->minKeyCode)
+                          * pKeySyms->mapWidth] == keySym) {
+            DMXDBG3("dmxKeySymToKeyCode: Translated keySym=0x%04x to"
+                    " keyCode=%d (reverses to core keySym=0x%04x)\n",
+                    keySym, i, dmxKeyCodeToKeySym(dmxLocalCoreKeyboard,i));
+            return i;
+        }
+    }
+    return 0;
+}
+
+static int dmxFixup(DevicePtr pDev, int detail, KeySym keySym)
+{
+    GETDMXLOCALFROMPDEV;
+    int keyCode;
+    
+    if (!dmxLocal->pDevice->key) {
+        dmxLog(dmxWarning, "dmxFixup: not a keyboard device (%s)\n",
+               dmxLocal->pDevice->name);
+        return NoSymbol;
+    }
+    if (!keySym) keySym = dmxKeyCodeToKeySym(dmxLocal, detail);
+    if (keySym == NoSymbol) return detail;
+    keyCode = dmxKeySymToKeyCode(dmxLocalCoreKeyboard, keySym, detail);
+
+    return keyCode ? keyCode : detail;
+}
+
+/** Enqueue a non-motion event from the \a pDev device with the
+ * specified \a type and \a detail.  If the event is a KeyPress or
+ * KeyRelease event, then the \a keySym is also specified.
+ *
+ * If \a block is set to \a DMX_BLOCK, then the SIGIO handler will be
+ * blocked around calls to #dmxeqEnqueue(). */
+    
+void dmxEnqueue(DevicePtr pDev, int type, int detail, KeySym keySym,
+                XEvent *e, DMXBlockType block)
+{
+    GETDMXINPUTFROMPDEV;
+    xEvent xE;
+
+    DMXDBG2("dmxEnqueue: Enqueuing type=%d detail=0x%0x\n", type, detail);
+
+    switch (type) {
+    case KeyPress:
+    case KeyRelease:
+        if (!keySym) keySym = dmxKeyCodeToKeySym(dmxLocal, detail);
+        if (dmxCheckFunctionKeys(dmxLocal, type, keySym))
+            return;
+        if (dmxLocal->sendsCore && dmxLocal != dmxLocalCoreKeyboard)
+            xE.u.u.detail = dmxFixup(pDev, detail, keySym);
+        break;
+    case ButtonPress:
+    case ButtonRelease:
+        detail = dmxGetButtonMapping(dmxLocal, detail);
+        break;
+    case MotionNotify:
+        /* All MotionNotify events should be sent via dmxCoreMotion and
+         * dmxExtMotion -- no input driver should build motion events by
+         * hand. */
+        dmxLog(dmxError, "dmxEnqueueXEvent: MotionNotify not allowed here\n");
+        break;
+                                /* Always ignore these events */
+    case EnterNotify:
+    case LeaveNotify:
+    case KeymapNotify:
+    case MappingNotify:         /* This is sent because we change the
+                                 * modifier map on the backend/console
+                                 * input device so that we have complete
+                                 * control of the input device LEDs. */
+        return;
+    default:
+#ifdef XINPUT
+        if (type == ProximityIn || type == ProximityOut) {
+            if (dmxLocal->sendsCore) return; /* Not a core event */
+            break;
+        }
+#endif
+        if (type >= LASTEvent) {
+#ifdef XINPUT
+            if (dmxTranslateAndEnqueueExtEvent(dmxLocal, e, block))
+#endif
+                dmxLogInput(dmxInput, "Unhandled extension event: %d\n", type);
+        } else {
+            dmxLogInput(dmxInput, "Unhandled event: %d (%s)\n",
+                        type, dmxEventName(type));
+        }
+        return;
+    }
+
+    memset(&xE, 0, sizeof(xE));
+    xE.u.u.type                = type;
+    xE.u.u.detail              = detail;
+    xE.u.keyButtonPointer.time = GetTimeInMillis();
+
+#ifdef XINPUT
+    if (!dmxLocal->sendsCore) dmxEnqueueExtEvent(dmxLocal, &xE, block);
+    else
+#endif
+        dmxeqEnqueue(&xE);
+}
+
+/** A pointer to this routine is passed to low-level input drivers so
+ * that all special keychecking is unified to this file.  This function
+ * returns 0 if no special keys have been pressed.  If the user has
+ * requested termination of the DMX server, -1 is returned.  If the user
+ * has requested a switch to a VT, then the (1-based) number of that VT
+ * is returned. */
+int dmxCheckSpecialKeys(DevicePtr pDev, KeySym keySym)
+{
+    GETDMXINPUTFROMPDEV;
+    int            vt    = 0;
+    unsigned short state = 0;
+
+    if (dmxLocal->sendsCore)
+        state = dmxLocalCoreKeyboard->pDevice->key->state;
+    else if (dmxLocal->pDevice->key)
+        state = dmxLocal->pDevice->key->state;
+
+    if (!dmxLocal->sendsCore) return 0; /* Only for core devices */
+
+    DMXDBG2("dmxCheckSpecialKeys: keySym=0x%04x state=0x%04x\n", keySym,state);
+    
+    if ((state & (ControlMask|Mod1Mask)) != (ControlMask|Mod1Mask)) return 0;
+    
+    switch (keySym) {
+    case XK_F1:
+    case XK_F2:
+    case XK_F3:
+    case XK_F4:
+    case XK_F5:
+    case XK_F6:
+    case XK_F7:
+    case XK_F8:
+    case XK_F9:
+    case XK_F10:
+        vt = keySym - XK_F1 + 1;
+        break;
+
+    case XK_F11:
+    case XK_F12:
+        vt = keySym - XK_F11 + 11;
+        break;
+
+    case XK_q:                  /* To avoid confusion  */
+    case XK_BackSpace:
+    case XK_Delete:
+    case XK_KP_Delete:
+        dmxLog(dmxInfo, "User request for termination\n");
+        dispatchException |= DE_TERMINATE;
+        return -1;              /* Terminate */
+    }
+
+    if (vt) {
+        dmxLog(dmxInfo, "Request to switch to VT %d\n", vt);
+        dmxInput->vt_switch_pending = vt;
+        return vt;
+    }
+
+    return 0;                   /* Do nothing */
+}