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-rw-r--r--xorg-server/hw/dmx/dmxcursor.c1970
1 files changed, 985 insertions, 985 deletions
diff --git a/xorg-server/hw/dmx/dmxcursor.c b/xorg-server/hw/dmx/dmxcursor.c
index 37e66d758..2d0243343 100644
--- a/xorg-server/hw/dmx/dmxcursor.c
+++ b/xorg-server/hw/dmx/dmxcursor.c
@@ -1,985 +1,985 @@
-/*
- * Copyright 2001-2004 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
- * This file contains code than supports cursor movement, including the
- * code that initializes and reinitializes the screen positions and
- * computes screen overlap.
- *
- * "This code is based very closely on the XFree86 equivalent
- * (xfree86/common/xf86Cursor.c)." --David Dawes.
- *
- * "This code was then extensively re-written, as explained here."
- * --Rik Faith
- *
- * The code in xf86Cursor.c used edge lists to implement the
- * CursorOffScreen function. The edge list computation was complex
- * (especially in the face of arbitrarily overlapping screens) compared
- * with the speed savings in the CursorOffScreen function. The new
- * implementation has erred on the side of correctness, readability, and
- * maintainability over efficiency. For the common (non-edge) case, the
- * dmxCursorOffScreen function does avoid a loop over all the screens.
- * When the cursor has left the screen, all the screens are searched,
- * and the first screen (in dmxScreens order) containing the cursor will
- * be returned. If run-time profiling shows that this routing is a
- * performance bottle-neck, then an edge list may have to be
- * reimplemented. An edge list algorithm is O(edges) whereas the new
- * algorithm is O(dmxNumScreens). Since edges is usually 1-3 and
- * dmxNumScreens may be 30-60 for large backend walls, this trade off
- * may be compelling.
- *
- * The xf86InitOrigins routine uses bit masks during the computation and
- * is therefore limited to the length of a word (e.g., 32 or 64 bits)
- * screens. Because Xdmx is expected to be used with a large number of
- * backend displays, this limitation was removed. The new
- * implementation has erred on the side of readability over efficiency,
- * using the dmxSL* routines to manage a screen list instead of a
- * bitmap, and a function call to decrease the length of the main
- * routine. Both algorithms are of the same order, and both are called
- * only at server generation time, so trading clarity and long-term
- * maintainability for efficiency does not seem justified in this case.
- */
-
-#ifdef HAVE_DMX_CONFIG_H
-#include <dmx-config.h>
-#endif
-
-#define DMX_CURSOR_DEBUG 0
-
-#include "dmx.h"
-#include "dmxsync.h"
-#include "dmxcursor.h"
-#include "dmxlog.h"
-#include "dmxprop.h"
-#include "dmxinput.h"
-
-#include "mipointer.h"
-#include "windowstr.h"
-#include "globals.h"
-#include "cursorstr.h"
-#include "dixevents.h" /* For GetSpriteCursor() */
-#include "inputstr.h" /* for inputInfo.pointer */
-
-#if DMX_CURSOR_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 dmxCursorDoMultiCursors = 1;
-
-/** Turn off support for displaying multiple cursors on overlapped
- back-end displays. See #dmxCursorDoMultiCursors. */
-void dmxCursorNoMulti(void)
-{
- dmxCursorDoMultiCursors = 0;
-}
-
-static Bool dmxCursorOffScreen(ScreenPtr *ppScreen, int *x, int *y)
-{
- DMXScreenInfo *dmxScreen;
- int i;
- int localX = *x;
- int localY = *y;
- int globalX;
- int globalY;
-
- if (screenInfo.numScreens == 1)
- return FALSE;
-
- /* On current screen? */
- dmxScreen = &dmxScreens[(*ppScreen)->myNum];
- if (localX >= 0
- && localX < dmxScreen->rootWidth
- && localY >= 0
- && localY < dmxScreen->rootHeight)
- return FALSE;
-
- /* Convert to global coordinate space */
- globalX = dmxScreen->rootXOrigin + localX;
- globalY = dmxScreen->rootYOrigin + localY;
-
- /* Is cursor on the current screen?
- * This efficiently exits this routine
- * for the most common case. */
- if (ppScreen && *ppScreen) {
- dmxScreen = &dmxScreens[(*ppScreen)->myNum];
- if (globalX >= dmxScreen->rootXOrigin
- && globalX < dmxScreen->rootXOrigin + dmxScreen->rootWidth
- && globalY >= dmxScreen->rootYOrigin
- && globalY < dmxScreen->rootYOrigin + dmxScreen->rootHeight)
- return FALSE;
- }
-
- /* Find first screen cursor is on */
- for (i = 0; i < dmxNumScreens; i++) {
- dmxScreen = &dmxScreens[i];
- if (globalX >= dmxScreen->rootXOrigin
- && globalX < dmxScreen->rootXOrigin + dmxScreen->rootWidth
- && globalY >= dmxScreen->rootYOrigin
- && globalY < dmxScreen->rootYOrigin + dmxScreen->rootHeight) {
- if (dmxScreen->index == (*ppScreen)->myNum)
- return FALSE;
- *ppScreen = screenInfo.screens[dmxScreen->index];
- *x = globalX - dmxScreen->rootXOrigin;
- *y = globalY - dmxScreen->rootYOrigin;
- return TRUE;
- }
- }
- return FALSE;
-}
-
-static void dmxCrossScreen(ScreenPtr pScreen, Bool entering)
-{
-}
-
-static void dmxWarpCursor(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y)
-{
- DMXDBG3("dmxWarpCursor(%d,%d,%d)\n", pScreen->myNum, x, y);
-#if 11 /*BP*/
- /* This call is depracated. Replace with???? */
- miPointerWarpCursor(pDev, pScreen, x, y);
-#else
- pScreen->SetCursorPosition(pDev, pScreen, x, y, FALSE);
-#endif
-}
-
-miPointerScreenFuncRec dmxPointerCursorFuncs =
-{
- dmxCursorOffScreen,
- dmxCrossScreen,
- dmxWarpCursor,
- NULL,
- NULL,
-};
-
-
-/** Create a list of screens that we'll manipulate. */
-static int *dmxSLCreate(void)
-{
- int *list = malloc(dmxNumScreens * sizeof(*list));
- int i;
-
- for (i = 0; i < dmxNumScreens; i++)
- list[i] = 1;
- return list;
-}
-
-/** Free list. */
-static void dmxSLFree(int *list)
-{
- free(list);
-}
-
-/** Find next uninitialized entry in list. */
-static int dmxSLFindNext(int *list)
-{
- int i;
- for (i = 0; i < dmxNumScreens; i++)
- if (list[i])
- return i;
- return -1;
-}
-
-/** Make one pass over all the screens and return the number updated. */
-static int dmxTryComputeScreenOrigins(int *screensLeft)
-{
- ScreenPtr pScreen;
- DMXScreenInfo *screen;
- int i, ref;
- int changed = 0;
-
- for (i = 0; i < dmxNumScreens; i++) {
- if (!screensLeft[i])
- continue;
- screen = &dmxScreens[i];
- switch (screen->where) {
- case PosAbsolute:
- dixScreenOrigins[i].x = screen->whereX;
- dixScreenOrigins[i].y = screen->whereY;
- ++changed, screensLeft[i] = 0;
- break;
- case PosRelative:
- ref = screen->whereRefScreen;
- if (screensLeft[ref])
- break;
- dixScreenOrigins[i].x = dixScreenOrigins[ref].x + screen->whereX;
- dixScreenOrigins[i].y = dixScreenOrigins[ref].y + screen->whereY;
- ++changed, screensLeft[i] = 0;
- break;
- case PosRightOf:
- ref = screen->whereRefScreen;
- if (screensLeft[ref])
- break;
- pScreen = screenInfo.screens[ref];
- dixScreenOrigins[i].x = dixScreenOrigins[ref].x + pScreen->width;
- dixScreenOrigins[i].y = dixScreenOrigins[ref].y;
- ++changed, screensLeft[i] = 0;
- break;
- case PosLeftOf:
- ref = screen->whereRefScreen;
- if (screensLeft[ref])
- break;
- pScreen = screenInfo.screens[i];
- dixScreenOrigins[i].x = dixScreenOrigins[ref].x - pScreen->width;
- dixScreenOrigins[i].y = dixScreenOrigins[ref].y;
- ++changed, screensLeft[i] = 0;
- break;
- case PosBelow:
- ref = screen->whereRefScreen;
- if (screensLeft[ref])
- break;
- pScreen = screenInfo.screens[ref];
- dixScreenOrigins[i].x = dixScreenOrigins[ref].x;
- dixScreenOrigins[i].y = dixScreenOrigins[ref].y + pScreen->height;
- ++changed, screensLeft[i] = 0;
- break;
- case PosAbove:
- ref = screen->whereRefScreen;
- if (screensLeft[ref])
- break;
- pScreen = screenInfo.screens[i];
- dixScreenOrigins[i].x = dixScreenOrigins[ref].x;
- dixScreenOrigins[i].y = dixScreenOrigins[ref].y - pScreen->height;
- ++changed, screensLeft[i] = 0;
- break;
- case PosNone:
- dmxLog(dmxFatal, "No position information for screen %d\n", i);
- }
- }
- return changed;
-}
-
-static void dmxComputeScreenOrigins(void)
-{
- int *screensLeft;
- int i, ref;
- int minX, minY;
-
- /* Compute origins based on
- * configuration information. */
- screensLeft = dmxSLCreate();
- while ((i = dmxSLFindNext(screensLeft)) >= 0) {
- while (dmxTryComputeScreenOrigins(screensLeft));
- if ((i = dmxSLFindNext(screensLeft)) >= 0) {
- /* All of the remaining screens are referencing each other.
- * Assign a value to one of them and go through again. This
- * guarantees that we will eventually terminate.
- */
- ref = dmxScreens[i].whereRefScreen;
- dixScreenOrigins[ref].x = dixScreenOrigins[ref].y = 0;
- screensLeft[ref] = 0;
- }
- }
- dmxSLFree(screensLeft);
-
-
- /* Justify the topmost and leftmost to
- * (0,0). */
- minX = dixScreenOrigins[0].x;
- minY = dixScreenOrigins[0].y;
- for (i = 1; i < dmxNumScreens; i++) { /* Compute minX, minY */
- if (dixScreenOrigins[i].x < minX)
- minX = dixScreenOrigins[i].x;
- if (dixScreenOrigins[i].y < minY)
- minY = dixScreenOrigins[i].y;
- }
- if (minX || minY) {
- for (i = 0; i < dmxNumScreens; i++) {
- dixScreenOrigins[i].x -= minX;
- dixScreenOrigins[i].y -= minY;
- }
- }
-}
-
-/** Recompute origin information in the #dmxScreens list. This is
- * called from #dmxInitOrigins. */
-void dmxReInitOrigins(void)
-{
- int i;
-
- if (dmxNumScreens > MAXSCREENS)
- dmxLog(dmxFatal, "dmxNumScreens = %d > MAXSCREENS = %d\n",
- dmxNumScreens, MAXSCREENS);
-
- for (i = 0; i < dmxNumScreens; i++) {
- DMXScreenInfo *dmxScreen = &dmxScreens[i];
- dmxLogOutput(dmxScreen,
- "s=%dx%d%+d%+d r=%dx%d%+d%+d @%d,%d"
- " (be=%dx%d depth=%d bpp=%d)\n",
- dmxScreen->scrnWidth, dmxScreen->scrnHeight,
- dmxScreen->scrnX, dmxScreen->scrnY,
-
- dmxScreen->rootWidth, dmxScreen->rootHeight,
- dmxScreen->rootX, dmxScreen->rootY,
-
- dmxScreen->rootXOrigin, dmxScreen->rootYOrigin,
- dmxScreen->beWidth, dmxScreen->beHeight,
- dmxScreen->beDepth, dmxScreen->beBPP);
- }
-}
-
-/** Initialize screen origins (and relative position). This is called
- * for each server generation. For dynamic reconfiguration, use
- * #dmxReInitOrigins() instead. */
-void dmxInitOrigins(void)
-{
- int i;
-
- if (dmxNumScreens > MAXSCREENS)
- dmxLog(dmxFatal, "dmxNumScreens = %d > MAXSCREENS = %d\n",
- dmxNumScreens, MAXSCREENS);
-
- for (i = 0; i < dmxNumScreens; i++) {
- DMXScreenInfo *dmxScreen = &dmxScreens[i];
- dmxLogOutput(dmxScreen,
- "(request) s=%dx%d%+d%+d r=%dx%d%+d%+d @%d,%d (%d)"
- " (be=%dx%d depth=%d bpp=%d)\n",
- dmxScreen->scrnWidth, dmxScreen->scrnHeight,
- dmxScreen->scrnX, dmxScreen->scrnY,
-
- dmxScreen->rootWidth, dmxScreen->rootHeight,
- dmxScreen->rootX, dmxScreen->rootY,
-
- dmxScreen->whereX, dmxScreen->whereY,
- dmxScreen->where,
-
- dmxScreen->beWidth, dmxScreen->beHeight,
- dmxScreen->beDepth, dmxScreen->beBPP);
- }
-
- dmxComputeScreenOrigins();
-
- for (i = 0; i < dmxNumScreens; i++) {
- DMXScreenInfo *dmxScreen = &dmxScreens[i];
- dmxScreen->rootXOrigin = dixScreenOrigins[i].x;
- dmxScreen->rootYOrigin = dixScreenOrigins[i].y;
- }
-
- dmxReInitOrigins();
-}
-
-/** Returns non-zero if the global \a x, \a y coordinate is on the
- * screen window of the \a dmxScreen. */
-int dmxOnScreen(int x, int y, DMXScreenInfo *dmxScreen)
-{
-#if DMX_CURSOR_DEBUG > 1
- dmxLog(dmxDebug,
- "dmxOnScreen %d %d,%d (r=%dx%d%+d%+d@%d,%d s=%dx%d%+d%+d)\n",
- dmxScreen->index, x, y,
- dmxScreen->rootWidth, dmxScreen->rootHeight,
- dmxScreen->rootX, dmxScreen->rootY,
- dmxScreen->rootXOrigin, dmxScreen->rootYOrigin,
- dmxScreen->scrnWidth, dmxScreen->scrnHeight,
- dmxScreen->scrnX, dmxScreen->scrnY);
-#endif
- if (x >= dmxScreen->rootXOrigin
- && x < dmxScreen->rootXOrigin + dmxScreen->rootWidth
- && y >= dmxScreen->rootYOrigin
- && y < dmxScreen->rootYOrigin + dmxScreen->rootHeight) return 1;
- return 0;
-}
-
-/** Returns non-zero if \a a overlaps \a b. */
-static int dmxDoesOverlap(DMXScreenInfo *a, DMXScreenInfo *b)
-{
- if (dmxOnScreen(a->rootXOrigin,
- a->rootYOrigin, b))
- return 1;
-
- if (dmxOnScreen(a->rootXOrigin,
- a->rootYOrigin + a->scrnWidth, b))
- return 1;
-
- if (dmxOnScreen(a->rootXOrigin + a->scrnHeight,
- a->rootYOrigin, b))
- return 1;
-
- if (dmxOnScreen(a->rootXOrigin + a->scrnHeight,
- a->rootYOrigin + a->scrnWidth, b))
- return 1;
-
- if (dmxOnScreen(b->rootXOrigin,
- b->rootYOrigin, a))
- return 1;
-
- if (dmxOnScreen(b->rootXOrigin,
- b->rootYOrigin + b->scrnWidth, a))
- return 1;
-
- if (dmxOnScreen(b->rootXOrigin + b->scrnHeight,
- b->rootYOrigin, a))
- return 1;
-
- if (dmxOnScreen(b->rootXOrigin + b->scrnHeight,
- b->rootYOrigin + b->scrnWidth, a))
- return 1;
-
- return 0;
-}
-
-/** Used with \a dmxInterateOverlap to print out a list of screens which
- * overlap each other. */
-static void *dmxPrintOverlap(DMXScreenInfo *dmxScreen, void *closure)
-{
- DMXScreenInfo *a = closure;
- if (dmxScreen != a) {
- if (dmxScreen->cursorNotShared)
- dmxLogOutputCont(a, " [%d/%s]", dmxScreen->index, dmxScreen->name);
- else
- dmxLogOutputCont(a, " %d/%s", dmxScreen->index, dmxScreen->name);
- }
- return NULL;
-}
-
-/** Iterate over the screens which overlap with the \a start screen,
- * calling \a f with the \a closure for each argument. Often used with
- * #dmxPrintOverlap. */
-static void *dmxIterateOverlap(DMXScreenInfo *start,
- void *(*f)(DMXScreenInfo *dmxScreen, void *),
- void *closure)
-{
- DMXScreenInfo *pt;
-
- if (!start->over) return f(start, closure);
-
- for (pt = start->over; /* condition at end of loop */; pt = pt->over) {
- void *retval;
- if ((retval = f(pt, closure))) return retval;
- if (pt == start) break;
- }
- return NULL;
-}
-
-/** Used with #dmxPropertyIterate to determine if screen \a a is the
- * same as the screen \a closure. */
-static void *dmxTestSameDisplay(DMXScreenInfo *a, void *closure)
-{
- DMXScreenInfo *b = closure;
-
- if (a == b)
- return a;
- return NULL;
-}
-
-/** Detects overlapping dmxScreens and creates circular lists. This
- * uses an O(dmxNumScreens^2) algorithm, but dmxNumScreens is < 100 and
- * the computation only needs to be performed for every server
- * generation or dynamic reconfiguration . */
-void dmxInitOverlap(void)
-{
- int i, j;
- DMXScreenInfo *a, *b, *pt;
-
- for (i = 0; i < dmxNumScreens; i++)
- dmxScreens[i].over = NULL;
-
- for (i = 0; i < dmxNumScreens; i++) {
- a = &dmxScreens[i];
-
- for (j = i+1; j < dmxNumScreens; j++) {
- b = &dmxScreens[j];
- if (b->over)
- continue;
-
- if (dmxDoesOverlap(a, b)) {
- DMXDBG6("%d overlaps %d: a=%p %p b=%p %p\n",
- a->index, b->index, a, a->over, b, b->over);
- b->over = (a->over ? a->over : a);
- a->over = b;
- }
- }
- }
-
- for (i = 0; i < dmxNumScreens; i++) {
- a = &dmxScreens[i];
-
- if (!a->over)
- continue;
-
- /* Flag all pairs that are on same display */
- for (pt = a->over; pt != a; pt = pt->over) {
- if (dmxPropertyIterate(a, dmxTestSameDisplay, pt)) {
- /* The ->over sets contain the transitive set of screens
- * that overlap. For screens that are on the same
- * backend display, we only want to exclude pairs of
- * screens that mutually overlap on the backend display,
- * so we call dmxDoesOverlap, which is stricter than the
- * ->over set. */
- if (!dmxDoesOverlap(a, pt))
- continue;
- a->cursorNotShared = 1;
- pt->cursorNotShared = 1;
- dmxLog(dmxInfo,
- "Screen %d and %d overlap on %s\n",
- a->index, pt->index, a->name);
- }
- }
- }
-
- for (i = 0; i < dmxNumScreens; i++) {
- a = &dmxScreens[i];
-
- if (a->over) {
- dmxLogOutput(a, "Overlaps");
- dmxIterateOverlap(a, dmxPrintOverlap, a);
- dmxLogOutputCont(a, "\n");
- }
- }
-}
-
-/** Create \a pCursor on the back-end associated with \a pScreen. */
-void dmxBECreateCursor(ScreenPtr pScreen, CursorPtr pCursor)
-{
- DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
- dmxCursorPrivPtr pCursorPriv = DMX_GET_CURSOR_PRIV(pCursor, pScreen);
- CursorBitsPtr pBits = pCursor->bits;
- Pixmap src, msk;
- XColor fg, bg;
- XImage *img;
- XlibGC gc = NULL;
- XGCValues v;
- unsigned long m;
- int i;
-
- if (!pCursorPriv)
- return;
-
- m = GCFunction | GCPlaneMask | GCForeground | GCBackground | GCClipMask;
- v.function = GXcopy;
- v.plane_mask = AllPlanes;
- v.foreground = 1L;
- v.background = 0L;
- v.clip_mask = None;
-
- for (i = 0; i < dmxScreen->beNumPixmapFormats; i++) {
- if (dmxScreen->bePixmapFormats[i].depth == 1) {
- /* Create GC in the back-end servers */
- gc = XCreateGC(dmxScreen->beDisplay, dmxScreen->scrnDefDrawables[i],
- m, &v);
- break;
- }
- }
- if (!gc)
- dmxLog(dmxFatal, "dmxRealizeCursor: gc not initialized\n");
-
- src = XCreatePixmap(dmxScreen->beDisplay, dmxScreen->scrnWin,
- pBits->width, pBits->height, 1);
- msk = XCreatePixmap(dmxScreen->beDisplay, dmxScreen->scrnWin,
- pBits->width, pBits->height, 1);
-
- img = XCreateImage(dmxScreen->beDisplay,
- dmxScreen->beVisuals[dmxScreen->beDefVisualIndex].visual,
- 1, XYBitmap, 0, (char *)pBits->source,
- pBits->width, pBits->height,
- BitmapPad(dmxScreen->beDisplay), 0);
-
- XPutImage(dmxScreen->beDisplay, src, gc, img, 0, 0, 0, 0,
- pBits->width, pBits->height);
-
- XFree(img);
-
- img = XCreateImage(dmxScreen->beDisplay,
- dmxScreen->beVisuals[dmxScreen->beDefVisualIndex].visual,
- 1, XYBitmap, 0, (char *)pBits->mask,
- pBits->width, pBits->height,
- BitmapPad(dmxScreen->beDisplay), 0);
-
- XPutImage(dmxScreen->beDisplay, msk, gc, img, 0, 0, 0, 0,
- pBits->width, pBits->height);
-
- XFree(img);
-
- fg.red = pCursor->foreRed;
- fg.green = pCursor->foreGreen;
- fg.blue = pCursor->foreBlue;
-
- bg.red = pCursor->backRed;
- bg.green = pCursor->backGreen;
- bg.blue = pCursor->backBlue;
-
- pCursorPriv->cursor = XCreatePixmapCursor(dmxScreen->beDisplay,
- src, msk,
- &fg, &bg,
- pBits->xhot, pBits->yhot);
-
- XFreePixmap(dmxScreen->beDisplay, src);
- XFreePixmap(dmxScreen->beDisplay, msk);
- XFreeGC(dmxScreen->beDisplay, gc);
-
- dmxSync(dmxScreen, FALSE);
-}
-
-static Bool _dmxRealizeCursor(ScreenPtr pScreen, CursorPtr pCursor)
-{
- DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
- dmxCursorPrivPtr pCursorPriv;
-
- DMXDBG2("_dmxRealizeCursor(%d,%p)\n", pScreen->myNum, pCursor);
-
- DMX_SET_CURSOR_PRIV(pCursor, pScreen, xalloc(sizeof(*pCursorPriv)));
- if (!DMX_GET_CURSOR_PRIV(pCursor, pScreen))
- return FALSE;
-
- pCursorPriv = DMX_GET_CURSOR_PRIV(pCursor, pScreen);
- pCursorPriv->cursor = (Cursor)0;
-
- if (!dmxScreen->beDisplay)
- return TRUE;
-
- dmxBECreateCursor(pScreen, pCursor);
- return TRUE;
-}
-
-/** Free \a pCursor on the back-end associated with \a pScreen. */
-Bool dmxBEFreeCursor(ScreenPtr pScreen, CursorPtr pCursor)
-{
- DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
- dmxCursorPrivPtr pCursorPriv = DMX_GET_CURSOR_PRIV(pCursor, pScreen);
-
- if (pCursorPriv) {
- XFreeCursor(dmxScreen->beDisplay, pCursorPriv->cursor);
- pCursorPriv->cursor = (Cursor)0;
- return TRUE;
- }
-
- return FALSE;
-}
-
-static Bool _dmxUnrealizeCursor(ScreenPtr pScreen, CursorPtr pCursor)
-{
- DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
-
- DMXDBG2("_dmxUnrealizeCursor(%d,%p)\n",
- pScreen->myNum, pCursor);
-
- if (dmxScreen->beDisplay) {
- if (dmxBEFreeCursor(pScreen, pCursor))
- xfree(DMX_GET_CURSOR_PRIV(pCursor, pScreen));
- }
- DMX_SET_CURSOR_PRIV(pCursor, pScreen, NULL);
-
- return TRUE;
-}
-
-static void _dmxMoveCursor(ScreenPtr pScreen, int x, int y)
-{
- DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
- int newX = x + dmxScreen->rootX;
- int newY = y + dmxScreen->rootY;
-
- if (newX < 0) newX = 0;
- if (newY < 0) newY = 0;
-
- DMXDBG5("_dmxMoveCursor(%d,%d,%d) -> %d,%d\n",
- pScreen->myNum, x, y, newX, newY);
- if (dmxScreen->beDisplay) {
- XWarpPointer(dmxScreen->beDisplay, None, dmxScreen->scrnWin,
- 0, 0, 0, 0, newX, newY);
- dmxSync(dmxScreen, TRUE);
- }
-}
-
-static void _dmxSetCursor(ScreenPtr pScreen, CursorPtr pCursor, int x, int y)
-{
- DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
-
- DMXDBG4("_dmxSetCursor(%d,%p,%d,%d)\n", pScreen->myNum, pCursor, x, y);
-
- if (pCursor) {
- dmxCursorPrivPtr pCursorPriv = DMX_GET_CURSOR_PRIV(pCursor, pScreen);
- if (pCursorPriv && dmxScreen->curCursor != pCursorPriv->cursor) {
- if (dmxScreen->beDisplay)
- XDefineCursor(dmxScreen->beDisplay, dmxScreen->scrnWin,
- pCursorPriv->cursor);
- dmxScreen->cursor = pCursor;
- dmxScreen->curCursor = pCursorPriv->cursor;
- dmxScreen->cursorVisible = 1;
- }
- _dmxMoveCursor(pScreen, x, y);
- } else {
- if (dmxScreen->beDisplay)
- XDefineCursor(dmxScreen->beDisplay, dmxScreen->scrnWin,
- dmxScreen->noCursor);
- dmxScreen->cursor = NULL;
- dmxScreen->curCursor = (Cursor)0;
- dmxScreen->cursorVisible = 0;
- }
- if (dmxScreen->beDisplay) dmxSync(dmxScreen, TRUE);
-}
-
-static Bool dmxRealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor)
-{
- DMXScreenInfo *start = &dmxScreens[pScreen->myNum];
- DMXScreenInfo *pt;
-
- if (!start->over || !dmxCursorDoMultiCursors || start->cursorNotShared)
- return _dmxRealizeCursor(pScreen, pCursor);
-
- for (pt = start->over; /* condition at end of loop */; pt = pt->over) {
- if (pt->cursorNotShared)
- continue;
- _dmxRealizeCursor(screenInfo.screens[pt->index], pCursor);
- if (pt == start)
- break;
- }
- return TRUE;
-}
-
-static Bool dmxUnrealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor)
-{
- DMXScreenInfo *start = &dmxScreens[pScreen->myNum];
- DMXScreenInfo *pt;
-
- if (!start->over || !dmxCursorDoMultiCursors || start->cursorNotShared)
- return _dmxUnrealizeCursor(pScreen, pCursor);
-
- for (pt = start->over; /* condition at end of loop */; pt = pt->over) {
- if (pt->cursorNotShared)
- continue;
- _dmxUnrealizeCursor(screenInfo.screens[pt->index], pCursor);
- if (pt == start)
- break;
- }
- return TRUE;
-}
-
-static CursorPtr dmxFindCursor(DMXScreenInfo *start)
-{
- DMXScreenInfo *pt;
-
- if (!start || !start->over)
- return GetSpriteCursor(inputInfo.pointer);
- for (pt = start->over; /* condition at end of loop */; pt = pt->over) {
- if (pt->cursor)
- return pt->cursor;
- if (pt == start)
- break;
- }
- return GetSpriteCursor(inputInfo.pointer);
-}
-
-/** Move the cursor to coordinates (\a x, \a y)on \a pScreen. This
- * function is usually called via #dmxPointerSpriteFuncs, except during
- * reconfiguration when the cursor is repositioned to force an update on
- * newley overlapping screens and on screens that no longer overlap.
- *
- * The coords (x,y) are in global coord space. We'll loop over the
- * back-end screens and see if they contain the global coord. If so, call
- * _dmxMoveCursor() (XWarpPointer) to position the pointer on that screen.
- */
-void dmxMoveCursor(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y)
-{
- DMXScreenInfo *start = &dmxScreens[pScreen->myNum];
- DMXScreenInfo *pt;
-
- DMXDBG3("dmxMoveCursor(%d,%d,%d)\n", pScreen->myNum, x, y);
-
- if (!start->over || !dmxCursorDoMultiCursors || start->cursorNotShared) {
- _dmxMoveCursor(pScreen, x, y);
- return;
- }
-
- for (pt = start->over; /* condition at end of loop */; pt = pt->over) {
- if (pt->cursorNotShared)
- continue;
- if (dmxOnScreen(x + start->rootXOrigin, y + start->rootYOrigin, pt)) {
- if (/* pt != start && */ !pt->cursorVisible) {
- if (!pt->cursor) {
- /* This only happens during
- * reconfiguration when a new overlap
- * occurs. */
- CursorPtr pCursor;
-
- if ((pCursor = dmxFindCursor(start)))
- _dmxRealizeCursor(screenInfo.screens[pt->index],
- pt->cursor = pCursor);
-
- }
- _dmxSetCursor(screenInfo.screens[pt->index],
- pt->cursor,
- x + start->rootXOrigin - pt->rootXOrigin,
- y + start->rootYOrigin - pt->rootYOrigin);
- }
- _dmxMoveCursor(screenInfo.screens[pt->index],
- x + start->rootXOrigin - pt->rootXOrigin,
- y + start->rootYOrigin - pt->rootYOrigin);
- } else if (/* pt != start && */ pt->cursorVisible) {
- _dmxSetCursor(screenInfo.screens[pt->index],
- NULL,
- x + start->rootXOrigin - pt->rootXOrigin,
- y + start->rootYOrigin - pt->rootYOrigin);
- }
- if (pt == start)
- break;
- }
-}
-
-static void dmxSetCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor, int x, int y)
-{
- DMXScreenInfo *start = &dmxScreens[pScreen->myNum];
- DMXScreenInfo *pt;
- int GX, GY, gx, gy;
-
- DMXDBG5("dmxSetCursor(%d %p, %p,%d,%d)\n",
- pScreen->myNum, start, pCursor, x, y);
-
- /* We do this check here because of two cases:
- *
- * 1) if a client calls XWarpPointer()
- * and Xinerama is not running, we can
- * have mi's notion of the pointer
- * position out of phase with DMX's
- * notion.
- *
- * 2) if a down button is held while the
- * cursor moves outside the root window,
- * mi's notion of the pointer position
- * is out of phase with DMX's notion and
- * the cursor can remain visible when it
- * shouldn't be. */
-
- dmxGetGlobalPosition(&GX, &GY);
- gx = start->rootXOrigin + x;
- gy = start->rootYOrigin + y;
- if (x && y && (GX != gx || GY != gy))
- dmxCoreMotion(NULL, gx, gy, 0, DMX_NO_BLOCK);
-
- if (!start->over || !dmxCursorDoMultiCursors || start->cursorNotShared) {
- _dmxSetCursor(pScreen, pCursor, x, y);
- return;
- }
-
- for (pt = start->over; /* condition at end of loop */; pt = pt->over) {
- if (pt->cursorNotShared)
- continue;
- if (dmxOnScreen(x + start->rootXOrigin, y + start->rootYOrigin, pt)) {
- _dmxSetCursor(screenInfo.screens[pt->index], pCursor,
- x + start->rootXOrigin - pt->rootXOrigin,
- y + start->rootYOrigin - pt->rootYOrigin);
- } else {
- _dmxSetCursor(screenInfo.screens[pt->index], NULL,
- x + start->rootXOrigin - pt->rootXOrigin,
- y + start->rootYOrigin - pt->rootYOrigin);
- }
- if (pt == start)
- break;
- }
-}
-
-
-/** This routine is used by the backend input routines to hide the
- * cursor on a screen that is being used for relative input. \see
- * dmxbackend.c */
-void dmxHideCursor(DMXScreenInfo *dmxScreen)
-{
- int x, y;
- ScreenPtr pScreen = screenInfo.screens[dmxScreen->index];
-
- dmxGetGlobalPosition(&x, &y);
- _dmxSetCursor(pScreen, NULL, x, y);
-}
-
-/** This routine is called during reconfiguration to make sure the
- * cursor is visible. */
-void dmxCheckCursor(void)
-{
- int i;
- int x, y;
- ScreenPtr pScreen;
- DMXScreenInfo *firstScreen;
-
- dmxGetGlobalPosition(&x, &y);
- firstScreen = dmxFindFirstScreen(x, y);
-
- DMXDBG2("dmxCheckCursor %d %d\n", x, y);
- for (i = 0; i < dmxNumScreens; i++) {
- DMXScreenInfo *dmxScreen = &dmxScreens[i];
- pScreen = screenInfo.screens[dmxScreen->index];
-
- if (!dmxOnScreen(x, y, dmxScreen)) {
- if (firstScreen && i == miPointerGetScreen(inputInfo.pointer)->myNum)
- miPointerSetScreen(inputInfo.pointer, firstScreen->index, x, y);
- _dmxSetCursor(pScreen, NULL,
- x - dmxScreen->rootXOrigin,
- y - dmxScreen->rootYOrigin);
- } else {
- if (!dmxScreen->cursor) {
- CursorPtr pCursor;
-
- if ((pCursor = dmxFindCursor(dmxScreen))) {
- _dmxRealizeCursor(pScreen, dmxScreen->cursor = pCursor);
- }
- }
- _dmxSetCursor(pScreen, dmxScreen->cursor,
- x - dmxScreen->rootXOrigin,
- y - dmxScreen->rootYOrigin);
- }
- }
- DMXDBG2(" leave dmxCheckCursor %d %d\n", x, y);
-}
-
-static Bool dmxDeviceCursorInitialize(DeviceIntPtr pDev, ScreenPtr pScr)
-{
- return TRUE;
-}
-
-static void dmxDeviceCursorCleanup(DeviceIntPtr pDev, ScreenPtr pScr)
-{
-}
-
-miPointerSpriteFuncRec dmxPointerSpriteFuncs =
-{
- dmxRealizeCursor,
- dmxUnrealizeCursor,
- dmxSetCursor,
- dmxMoveCursor,
- dmxDeviceCursorInitialize,
- dmxDeviceCursorCleanup
-};
+/*
+ * Copyright 2001-2004 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
+ * This file contains code than supports cursor movement, including the
+ * code that initializes and reinitializes the screen positions and
+ * computes screen overlap.
+ *
+ * "This code is based very closely on the XFree86 equivalent
+ * (xfree86/common/xf86Cursor.c)." --David Dawes.
+ *
+ * "This code was then extensively re-written, as explained here."
+ * --Rik Faith
+ *
+ * The code in xf86Cursor.c used edge lists to implement the
+ * CursorOffScreen function. The edge list computation was complex
+ * (especially in the face of arbitrarily overlapping screens) compared
+ * with the speed savings in the CursorOffScreen function. The new
+ * implementation has erred on the side of correctness, readability, and
+ * maintainability over efficiency. For the common (non-edge) case, the
+ * dmxCursorOffScreen function does avoid a loop over all the screens.
+ * When the cursor has left the screen, all the screens are searched,
+ * and the first screen (in dmxScreens order) containing the cursor will
+ * be returned. If run-time profiling shows that this routing is a
+ * performance bottle-neck, then an edge list may have to be
+ * reimplemented. An edge list algorithm is O(edges) whereas the new
+ * algorithm is O(dmxNumScreens). Since edges is usually 1-3 and
+ * dmxNumScreens may be 30-60 for large backend walls, this trade off
+ * may be compelling.
+ *
+ * The xf86InitOrigins routine uses bit masks during the computation and
+ * is therefore limited to the length of a word (e.g., 32 or 64 bits)
+ * screens. Because Xdmx is expected to be used with a large number of
+ * backend displays, this limitation was removed. The new
+ * implementation has erred on the side of readability over efficiency,
+ * using the dmxSL* routines to manage a screen list instead of a
+ * bitmap, and a function call to decrease the length of the main
+ * routine. Both algorithms are of the same order, and both are called
+ * only at server generation time, so trading clarity and long-term
+ * maintainability for efficiency does not seem justified in this case.
+ */
+
+#ifdef HAVE_DMX_CONFIG_H
+#include <dmx-config.h>
+#endif
+
+#define DMX_CURSOR_DEBUG 0
+
+#include "dmx.h"
+#include "dmxsync.h"
+#include "dmxcursor.h"
+#include "dmxlog.h"
+#include "dmxprop.h"
+#include "dmxinput.h"
+
+#include "mipointer.h"
+#include "windowstr.h"
+#include "globals.h"
+#include "cursorstr.h"
+#include "dixevents.h" /* For GetSpriteCursor() */
+#include "inputstr.h" /* for inputInfo.pointer */
+
+#if DMX_CURSOR_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 dmxCursorDoMultiCursors = 1;
+
+/** Turn off support for displaying multiple cursors on overlapped
+ back-end displays. See #dmxCursorDoMultiCursors. */
+void dmxCursorNoMulti(void)
+{
+ dmxCursorDoMultiCursors = 0;
+}
+
+static Bool dmxCursorOffScreen(ScreenPtr *ppScreen, int *x, int *y)
+{
+ DMXScreenInfo *dmxScreen;
+ int i;
+ int localX = *x;
+ int localY = *y;
+ int globalX;
+ int globalY;
+
+ if (screenInfo.numScreens == 1)
+ return FALSE;
+
+ /* On current screen? */
+ dmxScreen = &dmxScreens[(*ppScreen)->myNum];
+ if (localX >= 0
+ && localX < dmxScreen->rootWidth
+ && localY >= 0
+ && localY < dmxScreen->rootHeight)
+ return FALSE;
+
+ /* Convert to global coordinate space */
+ globalX = dmxScreen->rootXOrigin + localX;
+ globalY = dmxScreen->rootYOrigin + localY;
+
+ /* Is cursor on the current screen?
+ * This efficiently exits this routine
+ * for the most common case. */
+ if (ppScreen && *ppScreen) {
+ dmxScreen = &dmxScreens[(*ppScreen)->myNum];
+ if (globalX >= dmxScreen->rootXOrigin
+ && globalX < dmxScreen->rootXOrigin + dmxScreen->rootWidth
+ && globalY >= dmxScreen->rootYOrigin
+ && globalY < dmxScreen->rootYOrigin + dmxScreen->rootHeight)
+ return FALSE;
+ }
+
+ /* Find first screen cursor is on */
+ for (i = 0; i < dmxNumScreens; i++) {
+ dmxScreen = &dmxScreens[i];
+ if (globalX >= dmxScreen->rootXOrigin
+ && globalX < dmxScreen->rootXOrigin + dmxScreen->rootWidth
+ && globalY >= dmxScreen->rootYOrigin
+ && globalY < dmxScreen->rootYOrigin + dmxScreen->rootHeight) {
+ if (dmxScreen->index == (*ppScreen)->myNum)
+ return FALSE;
+ *ppScreen = screenInfo.screens[dmxScreen->index];
+ *x = globalX - dmxScreen->rootXOrigin;
+ *y = globalY - dmxScreen->rootYOrigin;
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+static void dmxCrossScreen(ScreenPtr pScreen, Bool entering)
+{
+}
+
+static void dmxWarpCursor(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y)
+{
+ DMXDBG3("dmxWarpCursor(%d,%d,%d)\n", pScreen->myNum, x, y);
+#if 11 /*BP*/
+ /* This call is depracated. Replace with???? */
+ miPointerWarpCursor(pDev, pScreen, x, y);
+#else
+ pScreen->SetCursorPosition(pDev, pScreen, x, y, FALSE);
+#endif
+}
+
+miPointerScreenFuncRec dmxPointerCursorFuncs =
+{
+ dmxCursorOffScreen,
+ dmxCrossScreen,
+ dmxWarpCursor,
+ NULL,
+ NULL,
+};
+
+
+/** Create a list of screens that we'll manipulate. */
+static int *dmxSLCreate(void)
+{
+ int *list = malloc(dmxNumScreens * sizeof(*list));
+ int i;
+
+ for (i = 0; i < dmxNumScreens; i++)
+ list[i] = 1;
+ return list;
+}
+
+/** Free list. */
+static void dmxSLFree(int *list)
+{
+ free(list);
+}
+
+/** Find next uninitialized entry in list. */
+static int dmxSLFindNext(int *list)
+{
+ int i;
+ for (i = 0; i < dmxNumScreens; i++)
+ if (list[i])
+ return i;
+ return -1;
+}
+
+/** Make one pass over all the screens and return the number updated. */
+static int dmxTryComputeScreenOrigins(int *screensLeft)
+{
+ ScreenPtr pScreen;
+ DMXScreenInfo *screen;
+ int i, ref;
+ int changed = 0;
+
+ for (i = 0; i < dmxNumScreens; i++) {
+ if (!screensLeft[i])
+ continue;
+ screen = &dmxScreens[i];
+ switch (screen->where) {
+ case PosAbsolute:
+ dixScreenOrigins[i].x = screen->whereX;
+ dixScreenOrigins[i].y = screen->whereY;
+ ++changed, screensLeft[i] = 0;
+ break;
+ case PosRelative:
+ ref = screen->whereRefScreen;
+ if (screensLeft[ref])
+ break;
+ dixScreenOrigins[i].x = dixScreenOrigins[ref].x + screen->whereX;
+ dixScreenOrigins[i].y = dixScreenOrigins[ref].y + screen->whereY;
+ ++changed, screensLeft[i] = 0;
+ break;
+ case PosRightOf:
+ ref = screen->whereRefScreen;
+ if (screensLeft[ref])
+ break;
+ pScreen = screenInfo.screens[ref];
+ dixScreenOrigins[i].x = dixScreenOrigins[ref].x + pScreen->width;
+ dixScreenOrigins[i].y = dixScreenOrigins[ref].y;
+ ++changed, screensLeft[i] = 0;
+ break;
+ case PosLeftOf:
+ ref = screen->whereRefScreen;
+ if (screensLeft[ref])
+ break;
+ pScreen = screenInfo.screens[i];
+ dixScreenOrigins[i].x = dixScreenOrigins[ref].x - pScreen->width;
+ dixScreenOrigins[i].y = dixScreenOrigins[ref].y;
+ ++changed, screensLeft[i] = 0;
+ break;
+ case PosBelow:
+ ref = screen->whereRefScreen;
+ if (screensLeft[ref])
+ break;
+ pScreen = screenInfo.screens[ref];
+ dixScreenOrigins[i].x = dixScreenOrigins[ref].x;
+ dixScreenOrigins[i].y = dixScreenOrigins[ref].y + pScreen->height;
+ ++changed, screensLeft[i] = 0;
+ break;
+ case PosAbove:
+ ref = screen->whereRefScreen;
+ if (screensLeft[ref])
+ break;
+ pScreen = screenInfo.screens[i];
+ dixScreenOrigins[i].x = dixScreenOrigins[ref].x;
+ dixScreenOrigins[i].y = dixScreenOrigins[ref].y - pScreen->height;
+ ++changed, screensLeft[i] = 0;
+ break;
+ case PosNone:
+ dmxLog(dmxFatal, "No position information for screen %d\n", i);
+ }
+ }
+ return changed;
+}
+
+static void dmxComputeScreenOrigins(void)
+{
+ int *screensLeft;
+ int i, ref;
+ int minX, minY;
+
+ /* Compute origins based on
+ * configuration information. */
+ screensLeft = dmxSLCreate();
+ while ((i = dmxSLFindNext(screensLeft)) >= 0) {
+ while (dmxTryComputeScreenOrigins(screensLeft));
+ if ((i = dmxSLFindNext(screensLeft)) >= 0) {
+ /* All of the remaining screens are referencing each other.
+ * Assign a value to one of them and go through again. This
+ * guarantees that we will eventually terminate.
+ */
+ ref = dmxScreens[i].whereRefScreen;
+ dixScreenOrigins[ref].x = dixScreenOrigins[ref].y = 0;
+ screensLeft[ref] = 0;
+ }
+ }
+ dmxSLFree(screensLeft);
+
+
+ /* Justify the topmost and leftmost to
+ * (0,0). */
+ minX = dixScreenOrigins[0].x;
+ minY = dixScreenOrigins[0].y;
+ for (i = 1; i < dmxNumScreens; i++) { /* Compute minX, minY */
+ if (dixScreenOrigins[i].x < minX)
+ minX = dixScreenOrigins[i].x;
+ if (dixScreenOrigins[i].y < minY)
+ minY = dixScreenOrigins[i].y;
+ }
+ if (minX || minY) {
+ for (i = 0; i < dmxNumScreens; i++) {
+ dixScreenOrigins[i].x -= minX;
+ dixScreenOrigins[i].y -= minY;
+ }
+ }
+}
+
+/** Recompute origin information in the #dmxScreens list. This is
+ * called from #dmxInitOrigins. */
+void dmxReInitOrigins(void)
+{
+ int i;
+
+ if (dmxNumScreens > MAXSCREENS)
+ dmxLog(dmxFatal, "dmxNumScreens = %d > MAXSCREENS = %d\n",
+ dmxNumScreens, MAXSCREENS);
+
+ for (i = 0; i < dmxNumScreens; i++) {
+ DMXScreenInfo *dmxScreen = &dmxScreens[i];
+ dmxLogOutput(dmxScreen,
+ "s=%dx%d%+d%+d r=%dx%d%+d%+d @%d,%d"
+ " (be=%dx%d depth=%d bpp=%d)\n",
+ dmxScreen->scrnWidth, dmxScreen->scrnHeight,
+ dmxScreen->scrnX, dmxScreen->scrnY,
+
+ dmxScreen->rootWidth, dmxScreen->rootHeight,
+ dmxScreen->rootX, dmxScreen->rootY,
+
+ dmxScreen->rootXOrigin, dmxScreen->rootYOrigin,
+ dmxScreen->beWidth, dmxScreen->beHeight,
+ dmxScreen->beDepth, dmxScreen->beBPP);
+ }
+}
+
+/** Initialize screen origins (and relative position). This is called
+ * for each server generation. For dynamic reconfiguration, use
+ * #dmxReInitOrigins() instead. */
+void dmxInitOrigins(void)
+{
+ int i;
+
+ if (dmxNumScreens > MAXSCREENS)
+ dmxLog(dmxFatal, "dmxNumScreens = %d > MAXSCREENS = %d\n",
+ dmxNumScreens, MAXSCREENS);
+
+ for (i = 0; i < dmxNumScreens; i++) {
+ DMXScreenInfo *dmxScreen = &dmxScreens[i];
+ dmxLogOutput(dmxScreen,
+ "(request) s=%dx%d%+d%+d r=%dx%d%+d%+d @%d,%d (%d)"
+ " (be=%dx%d depth=%d bpp=%d)\n",
+ dmxScreen->scrnWidth, dmxScreen->scrnHeight,
+ dmxScreen->scrnX, dmxScreen->scrnY,
+
+ dmxScreen->rootWidth, dmxScreen->rootHeight,
+ dmxScreen->rootX, dmxScreen->rootY,
+
+ dmxScreen->whereX, dmxScreen->whereY,
+ dmxScreen->where,
+
+ dmxScreen->beWidth, dmxScreen->beHeight,
+ dmxScreen->beDepth, dmxScreen->beBPP);
+ }
+
+ dmxComputeScreenOrigins();
+
+ for (i = 0; i < dmxNumScreens; i++) {
+ DMXScreenInfo *dmxScreen = &dmxScreens[i];
+ dmxScreen->rootXOrigin = dixScreenOrigins[i].x;
+ dmxScreen->rootYOrigin = dixScreenOrigins[i].y;
+ }
+
+ dmxReInitOrigins();
+}
+
+/** Returns non-zero if the global \a x, \a y coordinate is on the
+ * screen window of the \a dmxScreen. */
+int dmxOnScreen(int x, int y, DMXScreenInfo *dmxScreen)
+{
+#if DMX_CURSOR_DEBUG > 1
+ dmxLog(dmxDebug,
+ "dmxOnScreen %d %d,%d (r=%dx%d%+d%+d@%d,%d s=%dx%d%+d%+d)\n",
+ dmxScreen->index, x, y,
+ dmxScreen->rootWidth, dmxScreen->rootHeight,
+ dmxScreen->rootX, dmxScreen->rootY,
+ dmxScreen->rootXOrigin, dmxScreen->rootYOrigin,
+ dmxScreen->scrnWidth, dmxScreen->scrnHeight,
+ dmxScreen->scrnX, dmxScreen->scrnY);
+#endif
+ if (x >= dmxScreen->rootXOrigin
+ && x < dmxScreen->rootXOrigin + dmxScreen->rootWidth
+ && y >= dmxScreen->rootYOrigin
+ && y < dmxScreen->rootYOrigin + dmxScreen->rootHeight) return 1;
+ return 0;
+}
+
+/** Returns non-zero if \a a overlaps \a b. */
+static int dmxDoesOverlap(DMXScreenInfo *a, DMXScreenInfo *b)
+{
+ if (dmxOnScreen(a->rootXOrigin,
+ a->rootYOrigin, b))
+ return 1;
+
+ if (dmxOnScreen(a->rootXOrigin,
+ a->rootYOrigin + a->scrnWidth, b))
+ return 1;
+
+ if (dmxOnScreen(a->rootXOrigin + a->scrnHeight,
+ a->rootYOrigin, b))
+ return 1;
+
+ if (dmxOnScreen(a->rootXOrigin + a->scrnHeight,
+ a->rootYOrigin + a->scrnWidth, b))
+ return 1;
+
+ if (dmxOnScreen(b->rootXOrigin,
+ b->rootYOrigin, a))
+ return 1;
+
+ if (dmxOnScreen(b->rootXOrigin,
+ b->rootYOrigin + b->scrnWidth, a))
+ return 1;
+
+ if (dmxOnScreen(b->rootXOrigin + b->scrnHeight,
+ b->rootYOrigin, a))
+ return 1;
+
+ if (dmxOnScreen(b->rootXOrigin + b->scrnHeight,
+ b->rootYOrigin + b->scrnWidth, a))
+ return 1;
+
+ return 0;
+}
+
+/** Used with \a dmxInterateOverlap to print out a list of screens which
+ * overlap each other. */
+static void *dmxPrintOverlap(DMXScreenInfo *dmxScreen, void *closure)
+{
+ DMXScreenInfo *a = closure;
+ if (dmxScreen != a) {
+ if (dmxScreen->cursorNotShared)
+ dmxLogOutputCont(a, " [%d/%s]", dmxScreen->index, dmxScreen->name);
+ else
+ dmxLogOutputCont(a, " %d/%s", dmxScreen->index, dmxScreen->name);
+ }
+ return NULL;
+}
+
+/** Iterate over the screens which overlap with the \a start screen,
+ * calling \a f with the \a closure for each argument. Often used with
+ * #dmxPrintOverlap. */
+static void *dmxIterateOverlap(DMXScreenInfo *start,
+ void *(*f)(DMXScreenInfo *dmxScreen, void *),
+ void *closure)
+{
+ DMXScreenInfo *pt;
+
+ if (!start->over) return f(start, closure);
+
+ for (pt = start->over; /* condition at end of loop */; pt = pt->over) {
+ void *retval;
+ if ((retval = f(pt, closure))) return retval;
+ if (pt == start) break;
+ }
+ return NULL;
+}
+
+/** Used with #dmxPropertyIterate to determine if screen \a a is the
+ * same as the screen \a closure. */
+static void *dmxTestSameDisplay(DMXScreenInfo *a, void *closure)
+{
+ DMXScreenInfo *b = closure;
+
+ if (a == b)
+ return a;
+ return NULL;
+}
+
+/** Detects overlapping dmxScreens and creates circular lists. This
+ * uses an O(dmxNumScreens^2) algorithm, but dmxNumScreens is < 100 and
+ * the computation only needs to be performed for every server
+ * generation or dynamic reconfiguration . */
+void dmxInitOverlap(void)
+{
+ int i, j;
+ DMXScreenInfo *a, *b, *pt;
+
+ for (i = 0; i < dmxNumScreens; i++)
+ dmxScreens[i].over = NULL;
+
+ for (i = 0; i < dmxNumScreens; i++) {
+ a = &dmxScreens[i];
+
+ for (j = i+1; j < dmxNumScreens; j++) {
+ b = &dmxScreens[j];
+ if (b->over)
+ continue;
+
+ if (dmxDoesOverlap(a, b)) {
+ DMXDBG6("%d overlaps %d: a=%p %p b=%p %p\n",
+ a->index, b->index, a, a->over, b, b->over);
+ b->over = (a->over ? a->over : a);
+ a->over = b;
+ }
+ }
+ }
+
+ for (i = 0; i < dmxNumScreens; i++) {
+ a = &dmxScreens[i];
+
+ if (!a->over)
+ continue;
+
+ /* Flag all pairs that are on same display */
+ for (pt = a->over; pt != a; pt = pt->over) {
+ if (dmxPropertyIterate(a, dmxTestSameDisplay, pt)) {
+ /* The ->over sets contain the transitive set of screens
+ * that overlap. For screens that are on the same
+ * backend display, we only want to exclude pairs of
+ * screens that mutually overlap on the backend display,
+ * so we call dmxDoesOverlap, which is stricter than the
+ * ->over set. */
+ if (!dmxDoesOverlap(a, pt))
+ continue;
+ a->cursorNotShared = 1;
+ pt->cursorNotShared = 1;
+ dmxLog(dmxInfo,
+ "Screen %d and %d overlap on %s\n",
+ a->index, pt->index, a->name);
+ }
+ }
+ }
+
+ for (i = 0; i < dmxNumScreens; i++) {
+ a = &dmxScreens[i];
+
+ if (a->over) {
+ dmxLogOutput(a, "Overlaps");
+ dmxIterateOverlap(a, dmxPrintOverlap, a);
+ dmxLogOutputCont(a, "\n");
+ }
+ }
+}
+
+/** Create \a pCursor on the back-end associated with \a pScreen. */
+void dmxBECreateCursor(ScreenPtr pScreen, CursorPtr pCursor)
+{
+ DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+ dmxCursorPrivPtr pCursorPriv = DMX_GET_CURSOR_PRIV(pCursor, pScreen);
+ CursorBitsPtr pBits = pCursor->bits;
+ Pixmap src, msk;
+ XColor fg, bg;
+ XImage *img;
+ XlibGC gc = NULL;
+ XGCValues v;
+ unsigned long m;
+ int i;
+
+ if (!pCursorPriv)
+ return;
+
+ m = GCFunction | GCPlaneMask | GCForeground | GCBackground | GCClipMask;
+ v.function = GXcopy;
+ v.plane_mask = AllPlanes;
+ v.foreground = 1L;
+ v.background = 0L;
+ v.clip_mask = None;
+
+ for (i = 0; i < dmxScreen->beNumPixmapFormats; i++) {
+ if (dmxScreen->bePixmapFormats[i].depth == 1) {
+ /* Create GC in the back-end servers */
+ gc = XCreateGC(dmxScreen->beDisplay, dmxScreen->scrnDefDrawables[i],
+ m, &v);
+ break;
+ }
+ }
+ if (!gc)
+ dmxLog(dmxFatal, "dmxRealizeCursor: gc not initialized\n");
+
+ src = XCreatePixmap(dmxScreen->beDisplay, dmxScreen->scrnWin,
+ pBits->width, pBits->height, 1);
+ msk = XCreatePixmap(dmxScreen->beDisplay, dmxScreen->scrnWin,
+ pBits->width, pBits->height, 1);
+
+ img = XCreateImage(dmxScreen->beDisplay,
+ dmxScreen->beVisuals[dmxScreen->beDefVisualIndex].visual,
+ 1, XYBitmap, 0, (char *)pBits->source,
+ pBits->width, pBits->height,
+ BitmapPad(dmxScreen->beDisplay), 0);
+
+ XPutImage(dmxScreen->beDisplay, src, gc, img, 0, 0, 0, 0,
+ pBits->width, pBits->height);
+
+ XFree(img);
+
+ img = XCreateImage(dmxScreen->beDisplay,
+ dmxScreen->beVisuals[dmxScreen->beDefVisualIndex].visual,
+ 1, XYBitmap, 0, (char *)pBits->mask,
+ pBits->width, pBits->height,
+ BitmapPad(dmxScreen->beDisplay), 0);
+
+ XPutImage(dmxScreen->beDisplay, msk, gc, img, 0, 0, 0, 0,
+ pBits->width, pBits->height);
+
+ XFree(img);
+
+ fg.red = pCursor->foreRed;
+ fg.green = pCursor->foreGreen;
+ fg.blue = pCursor->foreBlue;
+
+ bg.red = pCursor->backRed;
+ bg.green = pCursor->backGreen;
+ bg.blue = pCursor->backBlue;
+
+ pCursorPriv->cursor = XCreatePixmapCursor(dmxScreen->beDisplay,
+ src, msk,
+ &fg, &bg,
+ pBits->xhot, pBits->yhot);
+
+ XFreePixmap(dmxScreen->beDisplay, src);
+ XFreePixmap(dmxScreen->beDisplay, msk);
+ XFreeGC(dmxScreen->beDisplay, gc);
+
+ dmxSync(dmxScreen, FALSE);
+}
+
+static Bool _dmxRealizeCursor(ScreenPtr pScreen, CursorPtr pCursor)
+{
+ DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+ dmxCursorPrivPtr pCursorPriv;
+
+ DMXDBG2("_dmxRealizeCursor(%d,%p)\n", pScreen->myNum, pCursor);
+
+ DMX_SET_CURSOR_PRIV(pCursor, pScreen, malloc(sizeof(*pCursorPriv)));
+ if (!DMX_GET_CURSOR_PRIV(pCursor, pScreen))
+ return FALSE;
+
+ pCursorPriv = DMX_GET_CURSOR_PRIV(pCursor, pScreen);
+ pCursorPriv->cursor = (Cursor)0;
+
+ if (!dmxScreen->beDisplay)
+ return TRUE;
+
+ dmxBECreateCursor(pScreen, pCursor);
+ return TRUE;
+}
+
+/** Free \a pCursor on the back-end associated with \a pScreen. */
+Bool dmxBEFreeCursor(ScreenPtr pScreen, CursorPtr pCursor)
+{
+ DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+ dmxCursorPrivPtr pCursorPriv = DMX_GET_CURSOR_PRIV(pCursor, pScreen);
+
+ if (pCursorPriv) {
+ XFreeCursor(dmxScreen->beDisplay, pCursorPriv->cursor);
+ pCursorPriv->cursor = (Cursor)0;
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static Bool _dmxUnrealizeCursor(ScreenPtr pScreen, CursorPtr pCursor)
+{
+ DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+
+ DMXDBG2("_dmxUnrealizeCursor(%d,%p)\n",
+ pScreen->myNum, pCursor);
+
+ if (dmxScreen->beDisplay) {
+ if (dmxBEFreeCursor(pScreen, pCursor))
+ free(DMX_GET_CURSOR_PRIV(pCursor, pScreen));
+ }
+ DMX_SET_CURSOR_PRIV(pCursor, pScreen, NULL);
+
+ return TRUE;
+}
+
+static void _dmxMoveCursor(ScreenPtr pScreen, int x, int y)
+{
+ DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+ int newX = x + dmxScreen->rootX;
+ int newY = y + dmxScreen->rootY;
+
+ if (newX < 0) newX = 0;
+ if (newY < 0) newY = 0;
+
+ DMXDBG5("_dmxMoveCursor(%d,%d,%d) -> %d,%d\n",
+ pScreen->myNum, x, y, newX, newY);
+ if (dmxScreen->beDisplay) {
+ XWarpPointer(dmxScreen->beDisplay, None, dmxScreen->scrnWin,
+ 0, 0, 0, 0, newX, newY);
+ dmxSync(dmxScreen, TRUE);
+ }
+}
+
+static void _dmxSetCursor(ScreenPtr pScreen, CursorPtr pCursor, int x, int y)
+{
+ DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+
+ DMXDBG4("_dmxSetCursor(%d,%p,%d,%d)\n", pScreen->myNum, pCursor, x, y);
+
+ if (pCursor) {
+ dmxCursorPrivPtr pCursorPriv = DMX_GET_CURSOR_PRIV(pCursor, pScreen);
+ if (pCursorPriv && dmxScreen->curCursor != pCursorPriv->cursor) {
+ if (dmxScreen->beDisplay)
+ XDefineCursor(dmxScreen->beDisplay, dmxScreen->scrnWin,
+ pCursorPriv->cursor);
+ dmxScreen->cursor = pCursor;
+ dmxScreen->curCursor = pCursorPriv->cursor;
+ dmxScreen->cursorVisible = 1;
+ }
+ _dmxMoveCursor(pScreen, x, y);
+ } else {
+ if (dmxScreen->beDisplay)
+ XDefineCursor(dmxScreen->beDisplay, dmxScreen->scrnWin,
+ dmxScreen->noCursor);
+ dmxScreen->cursor = NULL;
+ dmxScreen->curCursor = (Cursor)0;
+ dmxScreen->cursorVisible = 0;
+ }
+ if (dmxScreen->beDisplay) dmxSync(dmxScreen, TRUE);
+}
+
+static Bool dmxRealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor)
+{
+ DMXScreenInfo *start = &dmxScreens[pScreen->myNum];
+ DMXScreenInfo *pt;
+
+ if (!start->over || !dmxCursorDoMultiCursors || start->cursorNotShared)
+ return _dmxRealizeCursor(pScreen, pCursor);
+
+ for (pt = start->over; /* condition at end of loop */; pt = pt->over) {
+ if (pt->cursorNotShared)
+ continue;
+ _dmxRealizeCursor(screenInfo.screens[pt->index], pCursor);
+ if (pt == start)
+ break;
+ }
+ return TRUE;
+}
+
+static Bool dmxUnrealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor)
+{
+ DMXScreenInfo *start = &dmxScreens[pScreen->myNum];
+ DMXScreenInfo *pt;
+
+ if (!start->over || !dmxCursorDoMultiCursors || start->cursorNotShared)
+ return _dmxUnrealizeCursor(pScreen, pCursor);
+
+ for (pt = start->over; /* condition at end of loop */; pt = pt->over) {
+ if (pt->cursorNotShared)
+ continue;
+ _dmxUnrealizeCursor(screenInfo.screens[pt->index], pCursor);
+ if (pt == start)
+ break;
+ }
+ return TRUE;
+}
+
+static CursorPtr dmxFindCursor(DMXScreenInfo *start)
+{
+ DMXScreenInfo *pt;
+
+ if (!start || !start->over)
+ return GetSpriteCursor(inputInfo.pointer);
+ for (pt = start->over; /* condition at end of loop */; pt = pt->over) {
+ if (pt->cursor)
+ return pt->cursor;
+ if (pt == start)
+ break;
+ }
+ return GetSpriteCursor(inputInfo.pointer);
+}
+
+/** Move the cursor to coordinates (\a x, \a y)on \a pScreen. This
+ * function is usually called via #dmxPointerSpriteFuncs, except during
+ * reconfiguration when the cursor is repositioned to force an update on
+ * newley overlapping screens and on screens that no longer overlap.
+ *
+ * The coords (x,y) are in global coord space. We'll loop over the
+ * back-end screens and see if they contain the global coord. If so, call
+ * _dmxMoveCursor() (XWarpPointer) to position the pointer on that screen.
+ */
+void dmxMoveCursor(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y)
+{
+ DMXScreenInfo *start = &dmxScreens[pScreen->myNum];
+ DMXScreenInfo *pt;
+
+ DMXDBG3("dmxMoveCursor(%d,%d,%d)\n", pScreen->myNum, x, y);
+
+ if (!start->over || !dmxCursorDoMultiCursors || start->cursorNotShared) {
+ _dmxMoveCursor(pScreen, x, y);
+ return;
+ }
+
+ for (pt = start->over; /* condition at end of loop */; pt = pt->over) {
+ if (pt->cursorNotShared)
+ continue;
+ if (dmxOnScreen(x + start->rootXOrigin, y + start->rootYOrigin, pt)) {
+ if (/* pt != start && */ !pt->cursorVisible) {
+ if (!pt->cursor) {
+ /* This only happens during
+ * reconfiguration when a new overlap
+ * occurs. */
+ CursorPtr pCursor;
+
+ if ((pCursor = dmxFindCursor(start)))
+ _dmxRealizeCursor(screenInfo.screens[pt->index],
+ pt->cursor = pCursor);
+
+ }
+ _dmxSetCursor(screenInfo.screens[pt->index],
+ pt->cursor,
+ x + start->rootXOrigin - pt->rootXOrigin,
+ y + start->rootYOrigin - pt->rootYOrigin);
+ }
+ _dmxMoveCursor(screenInfo.screens[pt->index],
+ x + start->rootXOrigin - pt->rootXOrigin,
+ y + start->rootYOrigin - pt->rootYOrigin);
+ } else if (/* pt != start && */ pt->cursorVisible) {
+ _dmxSetCursor(screenInfo.screens[pt->index],
+ NULL,
+ x + start->rootXOrigin - pt->rootXOrigin,
+ y + start->rootYOrigin - pt->rootYOrigin);
+ }
+ if (pt == start)
+ break;
+ }
+}
+
+static void dmxSetCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor, int x, int y)
+{
+ DMXScreenInfo *start = &dmxScreens[pScreen->myNum];
+ DMXScreenInfo *pt;
+ int GX, GY, gx, gy;
+
+ DMXDBG5("dmxSetCursor(%d %p, %p,%d,%d)\n",
+ pScreen->myNum, start, pCursor, x, y);
+
+ /* We do this check here because of two cases:
+ *
+ * 1) if a client calls XWarpPointer()
+ * and Xinerama is not running, we can
+ * have mi's notion of the pointer
+ * position out of phase with DMX's
+ * notion.
+ *
+ * 2) if a down button is held while the
+ * cursor moves outside the root window,
+ * mi's notion of the pointer position
+ * is out of phase with DMX's notion and
+ * the cursor can remain visible when it
+ * shouldn't be. */
+
+ dmxGetGlobalPosition(&GX, &GY);
+ gx = start->rootXOrigin + x;
+ gy = start->rootYOrigin + y;
+ if (x && y && (GX != gx || GY != gy))
+ dmxCoreMotion(NULL, gx, gy, 0, DMX_NO_BLOCK);
+
+ if (!start->over || !dmxCursorDoMultiCursors || start->cursorNotShared) {
+ _dmxSetCursor(pScreen, pCursor, x, y);
+ return;
+ }
+
+ for (pt = start->over; /* condition at end of loop */; pt = pt->over) {
+ if (pt->cursorNotShared)
+ continue;
+ if (dmxOnScreen(x + start->rootXOrigin, y + start->rootYOrigin, pt)) {
+ _dmxSetCursor(screenInfo.screens[pt->index], pCursor,
+ x + start->rootXOrigin - pt->rootXOrigin,
+ y + start->rootYOrigin - pt->rootYOrigin);
+ } else {
+ _dmxSetCursor(screenInfo.screens[pt->index], NULL,
+ x + start->rootXOrigin - pt->rootXOrigin,
+ y + start->rootYOrigin - pt->rootYOrigin);
+ }
+ if (pt == start)
+ break;
+ }
+}
+
+
+/** This routine is used by the backend input routines to hide the
+ * cursor on a screen that is being used for relative input. \see
+ * dmxbackend.c */
+void dmxHideCursor(DMXScreenInfo *dmxScreen)
+{
+ int x, y;
+ ScreenPtr pScreen = screenInfo.screens[dmxScreen->index];
+
+ dmxGetGlobalPosition(&x, &y);
+ _dmxSetCursor(pScreen, NULL, x, y);
+}
+
+/** This routine is called during reconfiguration to make sure the
+ * cursor is visible. */
+void dmxCheckCursor(void)
+{
+ int i;
+ int x, y;
+ ScreenPtr pScreen;
+ DMXScreenInfo *firstScreen;
+
+ dmxGetGlobalPosition(&x, &y);
+ firstScreen = dmxFindFirstScreen(x, y);
+
+ DMXDBG2("dmxCheckCursor %d %d\n", x, y);
+ for (i = 0; i < dmxNumScreens; i++) {
+ DMXScreenInfo *dmxScreen = &dmxScreens[i];
+ pScreen = screenInfo.screens[dmxScreen->index];
+
+ if (!dmxOnScreen(x, y, dmxScreen)) {
+ if (firstScreen && i == miPointerGetScreen(inputInfo.pointer)->myNum)
+ miPointerSetScreen(inputInfo.pointer, firstScreen->index, x, y);
+ _dmxSetCursor(pScreen, NULL,
+ x - dmxScreen->rootXOrigin,
+ y - dmxScreen->rootYOrigin);
+ } else {
+ if (!dmxScreen->cursor) {
+ CursorPtr pCursor;
+
+ if ((pCursor = dmxFindCursor(dmxScreen))) {
+ _dmxRealizeCursor(pScreen, dmxScreen->cursor = pCursor);
+ }
+ }
+ _dmxSetCursor(pScreen, dmxScreen->cursor,
+ x - dmxScreen->rootXOrigin,
+ y - dmxScreen->rootYOrigin);
+ }
+ }
+ DMXDBG2(" leave dmxCheckCursor %d %d\n", x, y);
+}
+
+static Bool dmxDeviceCursorInitialize(DeviceIntPtr pDev, ScreenPtr pScr)
+{
+ return TRUE;
+}
+
+static void dmxDeviceCursorCleanup(DeviceIntPtr pDev, ScreenPtr pScr)
+{
+}
+
+miPointerSpriteFuncRec dmxPointerSpriteFuncs =
+{
+ dmxRealizeCursor,
+ dmxUnrealizeCursor,
+ dmxSetCursor,
+ dmxMoveCursor,
+ dmxDeviceCursorInitialize,
+ dmxDeviceCursorCleanup
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 12:22:19 +0000