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xserver-multidpi/hw/dmx/input/dmxbackend.c
Keith Packard 9838b7032e Introduce a consistent coding style 
This is strictly the application of the script 'x-indent-all.sh'
from util/modular. Compared to the patch that Daniel posted in
January, I've added a few indent flags:

	-bap
	-psl
	-T PrivatePtr
	-T pmWait
	-T _XFUNCPROTOBEGIN
	-T _XFUNCPROTOEND
	-T _X_EXPORT

The typedefs were needed to make the output of sdksyms.sh match the
previous output, otherwise, the code is formatted badly enough that
sdksyms.sh generates incorrect output.

The generated code was compared with the previous version and found to
be essentially identical -- "assert" line numbers and BUILD_TIME were
the only differences found.

The comparison was done with this script:

dir1=$1
dir2=$2

for dir in $dir1 $dir2; do
	(cd $dir && find . -name '*.o' | while read file; do
		dir=`dirname $file`
		base=`basename $file .o`
		dump=$dir/$base.dump
		objdump -d $file > $dump
	done)
done

find $dir1 -name '*.dump' | while read dump; do
	otherdump=`echo $dump | sed "s;$dir1;$dir2;"`
	diff -u $dump $otherdump
done

Signed-off-by: Keith Packard <keithp@keithp.com>
Acked-by: Daniel Stone <daniel@fooishbar.org>
Acked-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2012-03-21 13:54:42 -07:00

666 lines
21 KiB
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/*
* 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;
}
}
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