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-rw-r--r--xorg-server/hw/dmx/input/dmxbackend.c1281
1 files changed, 665 insertions, 616 deletions
diff --git a/xorg-server/hw/dmx/input/dmxbackend.c b/xorg-server/hw/dmx/input/dmxbackend.c
index 35e9e9616..9463c87d3 100644
--- a/xorg-server/hw/dmx/input/dmxbackend.c
+++ b/xorg-server/hw/dmx/input/dmxbackend.c
@@ -1,616 +1,665 @@
-/*
- * Copyright 2001-2003 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:
- * David H. Dawes <dawes@xfree86.org>
- * Kevin E. Martin <kem@redhat.com>
- * Rickard E. (Rik) Faith <faith@redhat.com>
- */
-
-/** \file
- * These routines support taking input from devices on the backend
- * (output) displays. \see dmxcommon.c. */
-
-#ifdef HAVE_DMX_CONFIG_H
-#include <dmx-config.h>
-#endif
-
-#define DMX_BACKEND_DEBUG 0
-
-#include "dmxinputinit.h"
-#include "dmxbackend.h"
-#include "dmxcommon.h"
-#include "dmxconsole.h"
-#include "dmxcursor.h"
-#include "dmxprop.h"
-#include "dmxsync.h"
-#include "dmxcb.h" /* For dmxGlobalWidth and dmxGlobalHeight */
-#include "dmxevents.h" /* For dmxGetGlobalPosition */
-#include "ChkNotMaskEv.h"
-
-#include "inputstr.h"
-#include "input.h"
-#include <X11/keysym.h>
-#include "mipointer.h"
-#include "scrnintstr.h"
-#include "windowstr.h"
-
-/* Private area for backend devices. */
-typedef struct _myPrivate {
- DMX_COMMON_PRIVATE;
- int myScreen;
- DMXScreenInfo *grabbedScreen;
-
- int lastX, lastY;
- int centerX, centerY;
- int relative;
- int newscreen;
- int initialized;
- DevicePtr mou, kbd;
- int entered;
- int offX, offY;
-} myPrivate;
-
-#if DMX_BACKEND_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)
-#define DMXDBG8(f,a,b,c,d,e,g,h,i) dmxLog(dmxDebug,f,a,b,c,d,e,g,h,i)
-#define DMXDBG9(f,a,b,c,d,e,g,h,i,j) dmxLog(dmxDebug,f,a,b,c,d,e,g,h,i,j)
-#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)
-#define DMXDBG8(f,a,b,c,d,e,g,h,i)
-#define DMXDBG9(f,a,b,c,d,e,g,h,i,j)
-#endif
-
-/** Create and return a private data structure. */
-pointer dmxBackendCreatePrivate(DeviceIntPtr pDevice)
-{
- GETDMXLOCALFROMPDEVICE;
- myPrivate *priv = calloc(1, sizeof(*priv));
- priv->dmxLocal = dmxLocal;
- return priv;
-}
-
-/** Destroy the private data structure. No checking is performed to
- * verify that the structure was actually created by
- * #dmxBackendCreatePrivate. */
-void dmxBackendDestroyPrivate(pointer private)
-{
- free(private);
-}
-
-static void *dmxBackendTestScreen(DMXScreenInfo *dmxScreen, void *closure)
-{
- long target = (long)closure;
-
- if (dmxScreen->index == target) return dmxScreen;
- return NULL;
-}
-
-/* Return non-zero if screen and priv->myScreen are on the same physical
- * backend display (1 if they are the same screen, 2 if they are
- * different screens). Since this is a common operation, the results
- * are cached. The cache is invalidated if \a priv is NULL (this should
- * be done with each server generation and reconfiguration). */
-static int dmxBackendSameDisplay(myPrivate *priv, long screen)
-{
- static myPrivate *oldpriv = NULL;
- static int oldscreen = -1;
- static int retcode = 0;
-
- if (priv == oldpriv && screen == oldscreen) return retcode;
- if (!priv) { /* Invalidate cache */
- oldpriv = NULL;
- oldscreen = -1;
- retcode = 0;
- return 0;
- }
-
- if (screen == priv->myScreen) retcode = 1;
- else if (screen < 0 || screen >= dmxNumScreens) retcode = 0;
- else if (dmxPropertyIterate(priv->be,
- dmxBackendTestScreen,
- (void *)screen)) retcode = 2;
- else retcode = 0;
-
- oldpriv = priv;
- oldscreen = screen;
- return retcode;
-}
-
-static void *dmxBackendTestEvents(DMXScreenInfo *dmxScreen, void *closure)
-{
- XEvent *X = (XEvent *)closure;
-
- if (XCheckNotMaskEvent(dmxScreen->beDisplay, ExposureMask, X))
- return dmxScreen;
- return NULL;
-}
-
-static void *dmxBackendTestMotionEvent(DMXScreenInfo *dmxScreen, void *closure)
-{
- XEvent *X = (XEvent *)closure;
-
- if (XCheckTypedEvent(dmxScreen->beDisplay, MotionNotify, X))
- return dmxScreen;
- return NULL;
-}
-
-static DMXScreenInfo *dmxBackendGetEvent(myPrivate *priv, XEvent *X)
-{
- DMXScreenInfo *dmxScreen;
-
- if ((dmxScreen = dmxPropertyIterate(priv->be, dmxBackendTestEvents, X)))
- return dmxScreen;
- return NULL;
-}
-
-static DMXScreenInfo *dmxBackendPendingMotionEvent(myPrivate *priv, int save)
-{
- DMXScreenInfo *dmxScreen;
- XEvent N;
-
- if ((dmxScreen = dmxPropertyIterate(priv->be,
- dmxBackendTestMotionEvent, &N))) {
- if (save) XPutBackEvent(dmxScreen->beDisplay, &N);
- return dmxScreen;
- }
- return NULL;
-}
-
-static void *dmxBackendTestWindow(DMXScreenInfo *dmxScreen, void *closure)
-{
- Window win = (Window)(long)closure;
- if (dmxScreen->scrnWin == win) return dmxScreen;
- return NULL;
-}
-
-static DMXScreenInfo *dmxBackendFindWindow(myPrivate *priv, Window win)
-{
- return dmxPropertyIterate(priv->be, dmxBackendTestWindow,
- (void *)(long)win);
-}
-
-/* If the cursor is over a set of overlapping screens and one of those
- * screens takes backend input, then we want that particular screen to
- * be current, not one of the other ones. */
-static int dmxBackendFindOverlapping(myPrivate *priv, int screen, int x, int y)
-{
- DMXScreenInfo *start = &dmxScreens[screen];
- DMXScreenInfo *pt;
-
- if (!start->over) return screen;
-
- for (pt = start->over; /* condition at end of loop */; pt = pt->over) {
- if (pt->index == priv->myScreen
- && dmxOnScreen(x, y, &dmxScreens[pt->index])) return pt->index;
- if (pt == start) break;
- }
- return screen;
-}
-
-/* Return non-zero if \a x and \a y are off \a screen. */
-static int dmxBackendOffscreen(int screen, int x, int y)
-{
- DMXScreenInfo *dmxScreen = &dmxScreens[screen];
-
- return (!dmxOnScreen(x, y, dmxScreen));
-}
-
-/** This routine is called from #dmxCoreMotion for each motion
- * event. \a x and \a y are global coordinants. */
-void dmxBackendUpdatePosition(pointer private, int x, int y)
-{
- GETPRIVFROMPRIVATE;
- int screen = miPointerGetScreen(inputInfo.pointer)->myNum;
- DMXScreenInfo *dmxScreen = &dmxScreens[priv->myScreen];
- int oldRelative = priv->relative;
- int topscreen = dmxBackendFindOverlapping(priv, screen, x, y);
- int same = dmxBackendSameDisplay(priv, topscreen);
- int offscreen = dmxBackendOffscreen(priv->myScreen, x, y);
- int offthis = dmxBackendOffscreen(screen, x, y);
-
- DMXDBG9("dmxBackendUpdatePosition(%d,%d) my=%d mi=%d rel=%d"
- " topscreen=%d same=%d offscreen=%d offthis=%d\n",
- x, y, priv->myScreen, screen, priv->relative,
- topscreen, same, offscreen, offthis);
-
- if (offscreen) {
- /* If the cursor is off the input screen, it should be moving
- * relative unless it is visible on a screen of the same display
- * (i.e., one that shares the mouse). */
- if (same == 2 && !offthis) {
- if (priv->relative) {
- DMXDBG0(" Off screen, but not absolute\n");
- priv->relative = 0;
- }
- } else {
- if (!priv->relative) {
- DMXDBG0(" Off screen, but not relative\n");
- priv->relative = 1;
- }
- }
- } else {
- if (topscreen != screen) {
- DMXDBG2(" Using screen %d instead of %d (from mi)\n",
- topscreen, screen);
- }
- if (same) {
- if (priv->relative) {
- DMXDBG0(" On screen, but not absolute\n");
- priv->relative = 0;
- }
- } else {
- if (!priv->relative) {
- DMXDBG0(" Not on screen, but not relative\n");
- priv->relative = 1;
- }
- }
- }
-
- if (oldRelative != priv->relative) {
- DMXDBG2(" Do switch, relative=%d same=%d\n",
- priv->relative, same);
- /* Discard all pre-switch events */
- dmxSync(dmxScreen, TRUE);
- while (dmxBackendPendingMotionEvent(priv, FALSE));
-
- if (dmxInput->console && offscreen) {
- /* Our special case is a console window and a backend window
- * share a display. In this case, the cursor is either on
- * the backend window (taking absolute input), or not (in
- * which case the cursor needs to be in the console
- * window). */
- if (priv->grabbedScreen) {
- DMXDBG2(" *** force ungrab on %s, display=%p\n",
- priv->grabbedScreen->name,
- priv->grabbedScreen->beDisplay);
- XUngrabPointer(priv->grabbedScreen->beDisplay, CurrentTime);
- dmxSync(priv->grabbedScreen, TRUE);
- priv->grabbedScreen = NULL;
- }
- DMXDBG0(" Capturing console\n");
- dmxConsoleCapture(dmxInput);
- } else {
- priv->newscreen = 1;
- if (priv->relative && !dmxInput->console) {
- DMXDBG5(" Hide cursor; warp from %d,%d to %d,%d on %d\n",
- priv->lastX, priv->lastY, priv->centerX, priv->centerY,
- priv->myScreen);
- dmxConsoleUncapture(dmxInput);
- dmxHideCursor(dmxScreen);
- priv->lastX = priv->centerX;
- priv->lastY = priv->centerY;
- XWarpPointer(priv->display, None, priv->window,
- 0, 0, 0, 0, priv->lastX, priv->lastY);
- dmxSync(dmxScreen, TRUE);
- } else {
- DMXDBG0(" Check cursor\n");
- dmxCheckCursor();
- }
- }
- }
-}
-
-/** Get events from the X queue on the backend servers and put the
- * events into the DMX event queue. */
-void dmxBackendCollectEvents(DevicePtr pDev,
- dmxMotionProcPtr motion,
- dmxEnqueueProcPtr enqueue,
- dmxCheckSpecialProcPtr checkspecial,
- DMXBlockType block)
-{
- GETPRIVFROMPDEV;
- GETDMXINPUTFROMPRIV;
- XEvent X;
- DMXScreenInfo *dmxScreen;
- int left = 0;
- int entered = priv->entered;
- int ignoreLeave = 0;
- int v[2];
- int retcode;
-
- while ((dmxScreen = dmxBackendGetEvent(priv, &X))) {
- switch (X.type) {
- case EnterNotify:
- dmxCommonSaveState(priv);
- if (entered++)
- continue;
- priv->entered = 1;
- ignoreLeave = 1;
- DMXDBG5("dmxBackendCollectEvents: Enter %lu %d,%d; GRAB %s %p\n",
- X.xcrossing.root, X.xcrossing.x, X.xcrossing.y,
- dmxScreen->name, dmxScreen->beDisplay);
- XRaiseWindow(dmxScreen->beDisplay, dmxScreen->scrnWin);
- priv->grabbedScreen = dmxScreen;
- if ((retcode = XGrabPointer(dmxScreen->beDisplay,
- dmxScreen->scrnWin,
- True, 0, GrabModeAsync,
- GrabModeAsync, None, None,
- CurrentTime))) {
- dmxLog(dmxError,
- "XGrabPointer failed during backend enter (%d)\n",
- retcode);
- }
- break;
- case LeaveNotify:
- if (ignoreLeave) {
- ignoreLeave = 0;
- continue;
- }
- dmxCommonRestoreState(priv);
- if (left++)
- continue;
- DMXDBG7("dmxBackendCollectEvents: Leave %lu %d,%d %d %d %s %s\n",
- X.xcrossing.root, X.xcrossing.x, X.xcrossing.y,
- X.xcrossing.detail, X.xcrossing.focus,
- priv->grabbedScreen ? "UNGRAB" : "",
- dmxScreen->name);
- if (priv->grabbedScreen) {
- XUngrabPointer(priv->grabbedScreen->beDisplay, CurrentTime);
- dmxSync(priv->grabbedScreen, TRUE);
- priv->grabbedScreen = NULL;
- }
- break;
- case MotionNotify:
- DMXDBG9("dmxBackendCollectEvents: MotionNotify %d/%d (mi %d)"
- " newscreen=%d: %d %d (e=%d; last=%d,%d)\n",
- dmxScreen->index, priv->myScreen,
- miPointerCurrentScreen()->myNum,
- priv->newscreen,
- X.xmotion.x, X.xmotion.y,
- entered, priv->lastX, priv->lastY);
- if (dmxBackendPendingMotionEvent(priv, TRUE))
- continue;
- if (!(dmxScreen = dmxBackendFindWindow(priv, X.xmotion.window)))
- dmxLog(dmxFatal,
- " Event on non-existant window %lu\n",
- X.xmotion.window);
- if (!priv->relative || dmxInput->console) {
- int newX = X.xmotion.x - dmxScreen->rootX;
- int newY = X.xmotion.y - dmxScreen->rootY;
-
- if (!priv->newscreen) {
- int width = dmxScreen->rootWidth;
- int height = dmxScreen->rootHeight;
- if (!newX) newX = -1;
- if (newX == width - 1) newX = width;
- if (!newY) newY = -1;
- if (newY == height - 1) newY = height;
- }
- priv->newscreen = 0;
- v[0] = dmxScreen->rootXOrigin + newX;
- v[1] = dmxScreen->rootYOrigin + newY;
- DMXDBG8(" Absolute move: %d,%d (r=%dx%d+%d+%d s=%dx%d)\n",
- v[0], v[1],
- priv->be->rootWidth, priv->be->rootHeight,
- priv->be->rootX, priv->be->rootY,
- priv->be->scrnWidth, priv->be->scrnHeight);
- motion(priv->mou, v, 0, 2, DMX_ABSOLUTE, block);
- priv->entered = 0;
- } else {
- int newX = priv->lastX - X.xmotion.x;
- int newY = priv->lastY - X.xmotion.y;
- priv->lastX = X.xmotion.x;
- priv->lastY = X.xmotion.y;
- v[0] = newX;
- v[1] = newY;
- DMXDBG2(" Relative move: %d, %d\n", v[0], v[1]);
- motion(priv->mou, v, 0, 2, DMX_RELATIVE, block);
- }
- if (entered && priv->relative) {
- DMXDBG4(" **** Relative %d %d instead of absolute %d %d\n",
- v[0], v[1],
- (dmxScreen->rootXOrigin + X.xmotion.x
- - dmxScreen->rootX),
- (dmxScreen->rootYOrigin + X.xmotion.y
- - dmxScreen->rootY));
- }
- break;
-
- case KeyPress:
- case KeyRelease:
- enqueue(priv->kbd, X.type, X.xkey.keycode, 0, NULL, block);
- break;
- case ButtonPress:
- case ButtonRelease:
- /* fall-through */
- default:
- /* Pass the whole event here, because
- * this may be an extension event. */
- enqueue(priv->mou, X.type, X.xbutton.button, 0, &X, block);
- break;
- }
- }
-}
-
-/** Called after input events are processed from the DMX queue. No
- * event processing actually takes place here, but this is a convenient
- * place to update the pointer. */
-void dmxBackendProcessInput(pointer private)
-{
- GETPRIVFROMPRIVATE;
-
- 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;
- }
-}
+/*
+ * Copyright 2001-2003 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:
+ * David H. Dawes <dawes@xfree86.org>
+ * Kevin E. Martin <kem@redhat.com>
+ * Rickard E. (Rik) Faith <faith@redhat.com>
+ */
+
+/** \file
+ * These routines support taking input from devices on the backend
+ * (output) displays. \see dmxcommon.c. */
+
+#ifdef HAVE_DMX_CONFIG_H
+#include <dmx-config.h>
+#endif
+
+#define DMX_BACKEND_DEBUG 0
+
+#include "dmxinputinit.h"
+#include "dmxbackend.h"
+#include "dmxcommon.h"
+#include "dmxconsole.h"
+#include "dmxcursor.h"
+#include "dmxprop.h"
+#include "dmxsync.h"
+#include "dmxcb.h" /* For dmxGlobalWidth and dmxGlobalHeight */
+#include "dmxevents.h" /* For dmxGetGlobalPosition */
+#include "ChkNotMaskEv.h"
+
+#include "inputstr.h"
+#include "input.h"
+#include <X11/keysym.h>
+#include "mipointer.h"
+#include "scrnintstr.h"
+#include "windowstr.h"
+
+/* Private area for backend devices. */
+typedef struct _myPrivate {
+ DMX_COMMON_PRIVATE;
+ int myScreen;
+ DMXScreenInfo *grabbedScreen;
+
+ int lastX, lastY;
+ int centerX, centerY;
+ int relative;
+ int newscreen;
+ int initialized;
+ DevicePtr mou, kbd;
+ int entered;
+ int offX, offY;
+} myPrivate;
+
+#if DMX_BACKEND_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)
+#define DMXDBG8(f,a,b,c,d,e,g,h,i) dmxLog(dmxDebug,f,a,b,c,d,e,g,h,i)
+#define DMXDBG9(f,a,b,c,d,e,g,h,i,j) dmxLog(dmxDebug,f,a,b,c,d,e,g,h,i,j)
+#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)
+#define DMXDBG8(f,a,b,c,d,e,g,h,i)
+#define DMXDBG9(f,a,b,c,d,e,g,h,i,j)
+#endif
+
+/** Create and return a private data structure. */
+pointer
+dmxBackendCreatePrivate(DeviceIntPtr pDevice)
+{
+ GETDMXLOCALFROMPDEVICE;
+ myPrivate *priv = calloc(1, sizeof(*priv));
+
+ priv->dmxLocal = dmxLocal;
+ return priv;
+}
+
+/** Destroy the private data structure. No checking is performed to
+ * verify that the structure was actually created by
+ * #dmxBackendCreatePrivate. */
+void
+dmxBackendDestroyPrivate(pointer private)
+{
+ free(private);
+}
+
+static void *
+dmxBackendTestScreen(DMXScreenInfo * dmxScreen, void *closure)
+{
+ long target = (long) closure;
+
+ if (dmxScreen->index == target)
+ return dmxScreen;
+ return NULL;
+}
+
+/* Return non-zero if screen and priv->myScreen are on the same physical
+ * backend display (1 if they are the same screen, 2 if they are
+ * different screens). Since this is a common operation, the results
+ * are cached. The cache is invalidated if \a priv is NULL (this should
+ * be done with each server generation and reconfiguration). */
+static int
+dmxBackendSameDisplay(myPrivate * priv, long screen)
+{
+ static myPrivate *oldpriv = NULL;
+ static int oldscreen = -1;
+ static int retcode = 0;
+
+ if (priv == oldpriv && screen == oldscreen)
+ return retcode;
+ if (!priv) { /* Invalidate cache */
+ oldpriv = NULL;
+ oldscreen = -1;
+ retcode = 0;
+ return 0;
+ }
+
+ if (screen == priv->myScreen)
+ retcode = 1;
+ else if (screen < 0 || screen >= dmxNumScreens)
+ retcode = 0;
+ else if (dmxPropertyIterate(priv->be,
+ dmxBackendTestScreen, (void *) screen))
+ retcode = 2;
+ else
+ retcode = 0;
+
+ oldpriv = priv;
+ oldscreen = screen;
+ return retcode;
+}
+
+static void *
+dmxBackendTestEvents(DMXScreenInfo * dmxScreen, void *closure)
+{
+ XEvent *X = (XEvent *) closure;
+
+ if (XCheckNotMaskEvent(dmxScreen->beDisplay, ExposureMask, X))
+ return dmxScreen;
+ return NULL;
+}
+
+static void *
+dmxBackendTestMotionEvent(DMXScreenInfo * dmxScreen, void *closure)
+{
+ XEvent *X = (XEvent *) closure;
+
+ if (XCheckTypedEvent(dmxScreen->beDisplay, MotionNotify, X))
+ return dmxScreen;
+ return NULL;
+}
+
+static DMXScreenInfo *
+dmxBackendGetEvent(myPrivate * priv, XEvent * X)
+{
+ DMXScreenInfo *dmxScreen;
+
+ if ((dmxScreen = dmxPropertyIterate(priv->be, dmxBackendTestEvents, X)))
+ return dmxScreen;
+ return NULL;
+}
+
+static DMXScreenInfo *
+dmxBackendPendingMotionEvent(myPrivate * priv, int save)
+{
+ DMXScreenInfo *dmxScreen;
+ XEvent N;
+
+ if ((dmxScreen = dmxPropertyIterate(priv->be,
+ dmxBackendTestMotionEvent, &N))) {
+ if (save)
+ XPutBackEvent(dmxScreen->beDisplay, &N);
+ return dmxScreen;
+ }
+ return NULL;
+}
+
+static void *
+dmxBackendTestWindow(DMXScreenInfo * dmxScreen, void *closure)
+{
+ Window win = (Window) (long) closure;
+
+ if (dmxScreen->scrnWin == win)
+ return dmxScreen;
+ return NULL;
+}
+
+static DMXScreenInfo *
+dmxBackendFindWindow(myPrivate * priv, Window win)
+{
+ return dmxPropertyIterate(priv->be, dmxBackendTestWindow,
+ (void *) (long) win);
+}
+
+/* If the cursor is over a set of overlapping screens and one of those
+ * screens takes backend input, then we want that particular screen to
+ * be current, not one of the other ones. */
+static int
+dmxBackendFindOverlapping(myPrivate * priv, int screen, int x, int y)
+{
+ DMXScreenInfo *start = &dmxScreens[screen];
+ DMXScreenInfo *pt;
+
+ if (!start->over)
+ return screen;
+
+ for (pt = start->over; /* condition at end of loop */ ; pt = pt->over) {
+ if (pt->index == priv->myScreen
+ && dmxOnScreen(x, y, &dmxScreens[pt->index]))
+ return pt->index;
+ if (pt == start)
+ break;
+ }
+ return screen;
+}
+
+/* Return non-zero if \a x and \a y are off \a screen. */
+static int
+dmxBackendOffscreen(int screen, int x, int y)
+{
+ DMXScreenInfo *dmxScreen = &dmxScreens[screen];
+
+ return (!dmxOnScreen(x, y, dmxScreen));
+}
+
+/** This routine is called from #dmxCoreMotion for each motion
+ * event. \a x and \a y are global coordinants. */
+void
+dmxBackendUpdatePosition(pointer private, int x, int y)
+{
+ GETPRIVFROMPRIVATE;
+ int screen = miPointerGetScreen(inputInfo.pointer)->myNum;
+ DMXScreenInfo *dmxScreen = &dmxScreens[priv->myScreen];
+ int oldRelative = priv->relative;
+ int topscreen = dmxBackendFindOverlapping(priv, screen, x, y);
+ int same = dmxBackendSameDisplay(priv, topscreen);
+ int offscreen = dmxBackendOffscreen(priv->myScreen, x, y);
+ int offthis = dmxBackendOffscreen(screen, x, y);
+
+ DMXDBG9("dmxBackendUpdatePosition(%d,%d) my=%d mi=%d rel=%d"
+ " topscreen=%d same=%d offscreen=%d offthis=%d\n",
+ x, y, priv->myScreen, screen, priv->relative,
+ topscreen, same, offscreen, offthis);
+
+ if (offscreen) {
+ /* If the cursor is off the input screen, it should be moving
+ * relative unless it is visible on a screen of the same display
+ * (i.e., one that shares the mouse). */
+ if (same == 2 && !offthis) {
+ if (priv->relative) {
+ DMXDBG0(" Off screen, but not absolute\n");
+ priv->relative = 0;
+ }
+ }
+ else {
+ if (!priv->relative) {
+ DMXDBG0(" Off screen, but not relative\n");
+ priv->relative = 1;
+ }
+ }
+ }
+ else {
+ if (topscreen != screen) {
+ DMXDBG2(" Using screen %d instead of %d (from mi)\n",
+ topscreen, screen);
+ }
+ if (same) {
+ if (priv->relative) {
+ DMXDBG0(" On screen, but not absolute\n");
+ priv->relative = 0;
+ }
+ }
+ else {
+ if (!priv->relative) {
+ DMXDBG0(" Not on screen, but not relative\n");
+ priv->relative = 1;
+ }
+ }
+ }
+
+ if (oldRelative != priv->relative) {
+ DMXDBG2(" Do switch, relative=%d same=%d\n", priv->relative, same);
+ /* Discard all pre-switch events */
+ dmxSync(dmxScreen, TRUE);
+ while (dmxBackendPendingMotionEvent(priv, FALSE));
+
+ if (dmxInput->console && offscreen) {
+ /* Our special case is a console window and a backend window
+ * share a display. In this case, the cursor is either on
+ * the backend window (taking absolute input), or not (in
+ * which case the cursor needs to be in the console
+ * window). */
+ if (priv->grabbedScreen) {
+ DMXDBG2(" *** force ungrab on %s, display=%p\n",
+ priv->grabbedScreen->name,
+ priv->grabbedScreen->beDisplay);
+ XUngrabPointer(priv->grabbedScreen->beDisplay, CurrentTime);
+ dmxSync(priv->grabbedScreen, TRUE);
+ priv->grabbedScreen = NULL;
+ }
+ DMXDBG0(" Capturing console\n");
+ dmxConsoleCapture(dmxInput);
+ }
+ else {
+ priv->newscreen = 1;
+ if (priv->relative && !dmxInput->console) {
+ DMXDBG5(" Hide cursor; warp from %d,%d to %d,%d on %d\n",
+ priv->lastX, priv->lastY, priv->centerX, priv->centerY,
+ priv->myScreen);
+ dmxConsoleUncapture(dmxInput);
+ dmxHideCursor(dmxScreen);
+ priv->lastX = priv->centerX;
+ priv->lastY = priv->centerY;
+ XWarpPointer(priv->display, None, priv->window,
+ 0, 0, 0, 0, priv->lastX, priv->lastY);
+ dmxSync(dmxScreen, TRUE);
+ }
+ else {
+ DMXDBG0(" Check cursor\n");
+ dmxCheckCursor();
+ }
+ }
+ }
+}
+
+/** Get events from the X queue on the backend servers and put the
+ * events into the DMX event queue. */
+void
+dmxBackendCollectEvents(DevicePtr pDev,
+ dmxMotionProcPtr motion,
+ dmxEnqueueProcPtr enqueue,
+ dmxCheckSpecialProcPtr checkspecial, DMXBlockType block)
+{
+ GETPRIVFROMPDEV;
+ GETDMXINPUTFROMPRIV;
+ XEvent X;
+ DMXScreenInfo *dmxScreen;
+ int left = 0;
+ int entered = priv->entered;
+ int ignoreLeave = 0;
+ int v[2];
+ int retcode;
+
+ while ((dmxScreen = dmxBackendGetEvent(priv, &X))) {
+ switch (X.type) {
+ case EnterNotify:
+ dmxCommonSaveState(priv);
+ if (entered++)
+ continue;
+ priv->entered = 1;
+ ignoreLeave = 1;
+ DMXDBG5("dmxBackendCollectEvents: Enter %lu %d,%d; GRAB %s %p\n",
+ X.xcrossing.root, X.xcrossing.x, X.xcrossing.y,
+ dmxScreen->name, dmxScreen->beDisplay);
+ XRaiseWindow(dmxScreen->beDisplay, dmxScreen->scrnWin);
+ priv->grabbedScreen = dmxScreen;
+ if ((retcode = XGrabPointer(dmxScreen->beDisplay,
+ dmxScreen->scrnWin,
+ True, 0, GrabModeAsync,
+ GrabModeAsync, None, None,
+ CurrentTime))) {
+ dmxLog(dmxError,
+ "XGrabPointer failed during backend enter (%d)\n",
+ retcode);
+ }
+ break;
+ case LeaveNotify:
+ if (ignoreLeave) {
+ ignoreLeave = 0;
+ continue;
+ }
+ dmxCommonRestoreState(priv);
+ if (left++)
+ continue;
+ DMXDBG7("dmxBackendCollectEvents: Leave %lu %d,%d %d %d %s %s\n",
+ X.xcrossing.root, X.xcrossing.x, X.xcrossing.y,
+ X.xcrossing.detail, X.xcrossing.focus,
+ priv->grabbedScreen ? "UNGRAB" : "", dmxScreen->name);
+ if (priv->grabbedScreen) {
+ XUngrabPointer(priv->grabbedScreen->beDisplay, CurrentTime);
+ dmxSync(priv->grabbedScreen, TRUE);
+ priv->grabbedScreen = NULL;
+ }
+ break;
+ case MotionNotify:
+ DMXDBG9("dmxBackendCollectEvents: MotionNotify %d/%d (mi %d)"
+ " newscreen=%d: %d %d (e=%d; last=%d,%d)\n",
+ dmxScreen->index, priv->myScreen,
+ miPointerCurrentScreen()->myNum,
+ priv->newscreen,
+ X.xmotion.x, X.xmotion.y,
+ entered, priv->lastX, priv->lastY);
+ if (dmxBackendPendingMotionEvent(priv, TRUE))
+ continue;
+ if (!(dmxScreen = dmxBackendFindWindow(priv, X.xmotion.window)))
+ dmxLog(dmxFatal,
+ " Event on non-existant window %lu\n",
+ X.xmotion.window);
+ if (!priv->relative || dmxInput->console) {
+ int newX = X.xmotion.x - dmxScreen->rootX;
+ int newY = X.xmotion.y - dmxScreen->rootY;
+
+ if (!priv->newscreen) {
+ int width = dmxScreen->rootWidth;
+ int height = dmxScreen->rootHeight;
+
+ if (!newX)
+ newX = -1;
+ if (newX == width - 1)
+ newX = width;
+ if (!newY)
+ newY = -1;
+ if (newY == height - 1)
+ newY = height;
+ }
+ priv->newscreen = 0;
+ v[0] = dmxScreen->rootXOrigin + newX;
+ v[1] = dmxScreen->rootYOrigin + newY;
+ DMXDBG8(" Absolute move: %d,%d (r=%dx%d+%d+%d s=%dx%d)\n",
+ v[0], v[1],
+ priv->be->rootWidth, priv->be->rootHeight,
+ priv->be->rootX, priv->be->rootY,
+ priv->be->scrnWidth, priv->be->scrnHeight);
+ motion(priv->mou, v, 0, 2, DMX_ABSOLUTE, block);
+ priv->entered = 0;
+ }
+ else {
+ int newX = priv->lastX - X.xmotion.x;
+ int newY = priv->lastY - X.xmotion.y;
+
+ priv->lastX = X.xmotion.x;
+ priv->lastY = X.xmotion.y;
+ v[0] = newX;
+ v[1] = newY;
+ DMXDBG2(" Relative move: %d, %d\n", v[0], v[1]);
+ motion(priv->mou, v, 0, 2, DMX_RELATIVE, block);
+ }
+ if (entered && priv->relative) {
+ DMXDBG4(" **** Relative %d %d instead of absolute %d %d\n",
+ v[0], v[1],
+ (dmxScreen->rootXOrigin + X.xmotion.x
+ - dmxScreen->rootX),
+ (dmxScreen->rootYOrigin + X.xmotion.y
+ - dmxScreen->rootY));
+ }
+ break;
+
+ case KeyPress:
+ case KeyRelease:
+ enqueue(priv->kbd, X.type, X.xkey.keycode, 0, NULL, block);
+ break;
+ case ButtonPress:
+ case ButtonRelease:
+ /* fall-through */
+ default:
+ /* Pass the whole event here, because
+ * this may be an extension event. */
+ enqueue(priv->mou, X.type, X.xbutton.button, 0, &X, block);
+ break;
+ }
+ }
+}
+
+/** Called after input events are processed from the DMX queue. No
+ * event processing actually takes place here, but this is a convenient
+ * place to update the pointer. */
+void
+dmxBackendProcessInput(pointer private)
+{
+ GETPRIVFROMPRIVATE;
+
+ 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;
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 07:30:31 +0000