1024 lines
32 KiB
C
1024 lines
32 KiB
C
/*
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* Copyright 2001-2004 Red Hat Inc., Durham, North Carolina.
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*
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation on the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/*
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* Authors:
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* David H. Dawes <dawes@xfree86.org>
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* Kevin E. Martin <kem@redhat.com>
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* Rickard E. (Rik) Faith <faith@redhat.com>
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*
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*/
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/** \file
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* This file contains code than supports cursor movement, including the
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* code that initializes and reinitializes the screen positions and
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* computes screen overlap.
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*
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* "This code is based very closely on the XFree86 equivalent
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* (xfree86/common/xf86Cursor.c)." --David Dawes.
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*
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* "This code was then extensively re-written, as explained here."
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* --Rik Faith
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*
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* The code in xf86Cursor.c used edge lists to implement the
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* CursorOffScreen function. The edge list computation was complex
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* (especially in the face of arbitrarily overlapping screens) compared
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* with the speed savings in the CursorOffScreen function. The new
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* implementation has erred on the side of correctness, readability, and
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* maintainability over efficiency. For the common (non-edge) case, the
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* dmxCursorOffScreen function does avoid a loop over all the screens.
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* When the cursor has left the screen, all the screens are searched,
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* and the first screen (in dmxScreens order) containing the cursor will
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* be returned. If run-time profiling shows that this routing is a
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* performance bottle-neck, then an edge list may have to be
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* reimplemented. An edge list algorithm is O(edges) whereas the new
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* algorithm is O(dmxNumScreens). Since edges is usually 1-3 and
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* dmxNumScreens may be 30-60 for large backend walls, this trade off
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* may be compelling.
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*
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* The xf86InitOrigins routine uses bit masks during the computation and
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* is therefore limited to the length of a word (e.g., 32 or 64 bits)
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* screens. Because Xdmx is expected to be used with a large number of
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* backend displays, this limitation was removed. The new
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* implementation has erred on the side of readability over efficiency,
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* using the dmxSL* routines to manage a screen list instead of a
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* bitmap, and a function call to decrease the length of the main
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* routine. Both algorithms are of the same order, and both are called
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* only at server generation time, so trading clarity and long-term
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* maintainability for efficiency does not seem justified in this case.
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*/
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#ifdef HAVE_DMX_CONFIG_H
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#include <dmx-config.h>
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#endif
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#define DMX_CURSOR_DEBUG 0
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#include "dmx.h"
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#include "dmxsync.h"
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#include "dmxcursor.h"
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#include "dmxlog.h"
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#include "dmxprop.h"
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#include "dmxinput.h"
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#include "mipointer.h"
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#include "windowstr.h"
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#include "globals.h"
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#include "cursorstr.h"
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#include "dixevents.h" /* For GetSpriteCursor() */
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#include "inputstr.h" /* for inputInfo.pointer */
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#if DMX_CURSOR_DEBUG
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#define DMXDBG0(f) dmxLog(dmxDebug,f)
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#define DMXDBG1(f,a) dmxLog(dmxDebug,f,a)
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#define DMXDBG2(f,a,b) dmxLog(dmxDebug,f,a,b)
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#define DMXDBG3(f,a,b,c) dmxLog(dmxDebug,f,a,b,c)
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#define DMXDBG4(f,a,b,c,d) dmxLog(dmxDebug,f,a,b,c,d)
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#define DMXDBG5(f,a,b,c,d,e) dmxLog(dmxDebug,f,a,b,c,d,e)
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#define DMXDBG6(f,a,b,c,d,e,g) dmxLog(dmxDebug,f,a,b,c,d,e,g)
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#define DMXDBG7(f,a,b,c,d,e,g,h) dmxLog(dmxDebug,f,a,b,c,d,e,g,h)
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#else
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#define DMXDBG0(f)
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#define DMXDBG1(f,a)
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#define DMXDBG2(f,a,b)
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#define DMXDBG3(f,a,b,c)
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#define DMXDBG4(f,a,b,c,d)
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#define DMXDBG5(f,a,b,c,d,e)
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#define DMXDBG6(f,a,b,c,d,e,g)
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#define DMXDBG7(f,a,b,c,d,e,g,h)
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#endif
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static int dmxCursorDoMultiCursors = 1;
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/** Turn off support for displaying multiple cursors on overlapped
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back-end displays. See #dmxCursorDoMultiCursors. */
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void
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dmxCursorNoMulti(void)
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{
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dmxCursorDoMultiCursors = 0;
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}
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static Bool
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dmxCursorOffScreen(ScreenPtr *ppScreen, int *x, int *y)
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{
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DMXScreenInfo *dmxScreen;
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int i;
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int localX = *x;
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int localY = *y;
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int globalX;
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int globalY;
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if (screenInfo.numScreens == 1)
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return FALSE;
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/* On current screen? */
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dmxScreen = &dmxScreens[(*ppScreen)->myNum];
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if (localX >= 0
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&& localX < dmxScreen->rootWidth
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&& localY >= 0 && localY < dmxScreen->rootHeight)
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return FALSE;
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/* Convert to global coordinate space */
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globalX = dmxScreen->rootXOrigin + localX;
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globalY = dmxScreen->rootYOrigin + localY;
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/* Is cursor on the current screen?
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* This efficiently exits this routine
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* for the most common case. */
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if (ppScreen && *ppScreen) {
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dmxScreen = &dmxScreens[(*ppScreen)->myNum];
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if (globalX >= dmxScreen->rootXOrigin
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&& globalX < dmxScreen->rootXOrigin + dmxScreen->rootWidth
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&& globalY >= dmxScreen->rootYOrigin
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&& globalY < dmxScreen->rootYOrigin + dmxScreen->rootHeight)
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return FALSE;
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}
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/* Find first screen cursor is on */
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for (i = 0; i < dmxNumScreens; i++) {
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dmxScreen = &dmxScreens[i];
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if (globalX >= dmxScreen->rootXOrigin
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&& globalX < dmxScreen->rootXOrigin + dmxScreen->rootWidth
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&& globalY >= dmxScreen->rootYOrigin
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&& globalY < dmxScreen->rootYOrigin + dmxScreen->rootHeight) {
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if (dmxScreen->index == (*ppScreen)->myNum)
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return FALSE;
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*ppScreen = screenInfo.screens[dmxScreen->index];
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*x = globalX - dmxScreen->rootXOrigin;
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*y = globalY - dmxScreen->rootYOrigin;
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return TRUE;
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}
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}
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return FALSE;
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}
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static void
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dmxCrossScreen(ScreenPtr pScreen, Bool entering)
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{
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}
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static void
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dmxWarpCursor(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y)
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{
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DMXDBG3("dmxWarpCursor(%d,%d,%d)\n", pScreen->myNum, x, y);
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#if 11 /*BP*/
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/* This call is depracated. Replace with???? */
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miPointerWarpCursor(pDev, pScreen, x, y);
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#else
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pScreen->SetCursorPosition(pDev, pScreen, x, y, FALSE);
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#endif
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}
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miPointerScreenFuncRec dmxPointerCursorFuncs = {
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dmxCursorOffScreen,
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dmxCrossScreen,
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dmxWarpCursor,
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};
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/** Create a list of screens that we'll manipulate. */
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static int *
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dmxSLCreate(void)
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{
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int *list = malloc(dmxNumScreens * sizeof(*list));
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int i;
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for (i = 0; i < dmxNumScreens; i++)
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list[i] = 1;
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return list;
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}
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/** Free list. */
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static void
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dmxSLFree(int *list)
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{
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free(list);
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}
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/** Find next uninitialized entry in list. */
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static int
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dmxSLFindNext(int *list)
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{
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int i;
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for (i = 0; i < dmxNumScreens; i++)
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if (list[i])
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return i;
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return -1;
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}
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/** Make one pass over all the screens and return the number updated. */
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static int
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dmxTryComputeScreenOrigins(int *screensLeft)
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{
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ScreenPtr pScreen, refScreen;
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DMXScreenInfo *screen;
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int i, ref;
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int changed = 0;
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for (i = 0; i < dmxNumScreens; i++) {
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if (!screensLeft[i])
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continue;
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screen = &dmxScreens[i];
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pScreen = screenInfo.screens[i];
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switch (screen->where) {
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case PosAbsolute:
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pScreen->x = screen->whereX;
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pScreen->y = screen->whereY;
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++changed, screensLeft[i] = 0;
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break;
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case PosRelative:
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ref = screen->whereRefScreen;
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if (screensLeft[ref])
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break;
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refScreen = screenInfo.screens[ref];
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pScreen->x = refScreen->x + screen->whereX;
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pScreen->y = refScreen->y + screen->whereY;
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++changed, screensLeft[i] = 0;
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break;
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case PosRightOf:
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ref = screen->whereRefScreen;
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if (screensLeft[ref])
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break;
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refScreen = screenInfo.screens[ref];
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pScreen->x = refScreen->x + refScreen->width;
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pScreen->y = refScreen->y;
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++changed, screensLeft[i] = 0;
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break;
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case PosLeftOf:
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ref = screen->whereRefScreen;
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if (screensLeft[ref])
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break;
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refScreen = screenInfo.screens[ref];
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pScreen->x = refScreen->x - pScreen->width;
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pScreen->y = refScreen->y;
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++changed, screensLeft[i] = 0;
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break;
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case PosBelow:
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ref = screen->whereRefScreen;
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if (screensLeft[ref])
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break;
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refScreen = screenInfo.screens[ref];
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pScreen->x = refScreen->x;
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pScreen->y = refScreen->y + refScreen->height;
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++changed, screensLeft[i] = 0;
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break;
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case PosAbove:
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ref = screen->whereRefScreen;
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if (screensLeft[ref])
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break;
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refScreen = screenInfo.screens[ref];
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pScreen->x = refScreen->x;
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pScreen->y = refScreen->y - pScreen->height;
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++changed, screensLeft[i] = 0;
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break;
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case PosNone:
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dmxLog(dmxFatal, "No position information for screen %d\n", i);
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}
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}
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return changed;
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}
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static void
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dmxComputeScreenOrigins(void)
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{
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ScreenPtr pScreen;
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int *screensLeft;
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int i, ref;
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int minX, minY;
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/* Compute origins based on
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* configuration information. */
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screensLeft = dmxSLCreate();
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while ((i = dmxSLFindNext(screensLeft)) >= 0) {
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while (dmxTryComputeScreenOrigins(screensLeft));
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if ((i = dmxSLFindNext(screensLeft)) >= 0) {
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/* All of the remaining screens are referencing each other.
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* Assign a value to one of them and go through again. This
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* guarantees that we will eventually terminate.
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*/
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ref = dmxScreens[i].whereRefScreen;
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pScreen = screenInfo.screens[ref];
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pScreen->x = pScreen->y = 0;
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screensLeft[ref] = 0;
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}
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}
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dmxSLFree(screensLeft);
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/* Justify the topmost and leftmost to
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* (0,0). */
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minX = screenInfo.screens[0]->x;
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minY = screenInfo.screens[0]->y;
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for (i = 1; i < dmxNumScreens; i++) { /* Compute minX, minY */
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if (screenInfo.screens[i]->x < minX)
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minX = screenInfo.screens[i]->x;
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if (screenInfo.screens[i]->y < minY)
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minY = screenInfo.screens[i]->y;
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}
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if (minX || minY) {
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for (i = 0; i < dmxNumScreens; i++) {
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screenInfo.screens[i]->x -= minX;
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screenInfo.screens[i]->y -= minY;
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}
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}
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update_desktop_dimensions();
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}
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/** Recompute origin information in the #dmxScreens list. This is
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* called from #dmxInitOrigins. */
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void
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dmxReInitOrigins(void)
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{
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int i;
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if (dmxNumScreens > MAXSCREENS)
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dmxLog(dmxFatal, "dmxNumScreens = %d > MAXSCREENS = %d\n",
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dmxNumScreens, MAXSCREENS);
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for (i = 0; i < dmxNumScreens; i++) {
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DMXScreenInfo *dmxScreen = &dmxScreens[i];
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dmxLogOutput(dmxScreen,
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"s=%dx%d%+d%+d r=%dx%d%+d%+d @%d,%d"
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" (be=%dx%d depth=%d bpp=%d)\n",
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dmxScreen->scrnWidth, dmxScreen->scrnHeight,
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dmxScreen->scrnX, dmxScreen->scrnY,
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dmxScreen->rootWidth, dmxScreen->rootHeight,
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dmxScreen->rootX, dmxScreen->rootY,
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dmxScreen->rootXOrigin, dmxScreen->rootYOrigin,
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dmxScreen->beWidth, dmxScreen->beHeight,
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dmxScreen->beDepth, dmxScreen->beBPP);
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}
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}
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/** Initialize screen origins (and relative position). This is called
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* for each server generation. For dynamic reconfiguration, use
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* #dmxReInitOrigins() instead. */
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void
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dmxInitOrigins(void)
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{
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int i;
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if (dmxNumScreens > MAXSCREENS)
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dmxLog(dmxFatal, "dmxNumScreens = %d > MAXSCREENS = %d\n",
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dmxNumScreens, MAXSCREENS);
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for (i = 0; i < dmxNumScreens; i++) {
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DMXScreenInfo *dmxScreen = &dmxScreens[i];
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dmxLogOutput(dmxScreen,
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"(request) s=%dx%d%+d%+d r=%dx%d%+d%+d @%d,%d (%d)"
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" (be=%dx%d depth=%d bpp=%d)\n",
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dmxScreen->scrnWidth, dmxScreen->scrnHeight,
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dmxScreen->scrnX, dmxScreen->scrnY,
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dmxScreen->rootWidth, dmxScreen->rootHeight,
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dmxScreen->rootX, dmxScreen->rootY,
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dmxScreen->whereX, dmxScreen->whereY,
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dmxScreen->where,
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dmxScreen->beWidth, dmxScreen->beHeight,
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dmxScreen->beDepth, dmxScreen->beBPP);
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}
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dmxComputeScreenOrigins();
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for (i = 0; i < dmxNumScreens; i++) {
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DMXScreenInfo *dmxScreen = &dmxScreens[i];
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dmxScreen->rootXOrigin = screenInfo.screens[i]->x;
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dmxScreen->rootYOrigin = screenInfo.screens[i]->y;
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}
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dmxReInitOrigins();
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}
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/** Returns non-zero if the global \a x, \a y coordinate is on the
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* screen window of the \a dmxScreen. */
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int
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dmxOnScreen(int x, int y, DMXScreenInfo * dmxScreen)
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{
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#if DMX_CURSOR_DEBUG > 1
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dmxLog(dmxDebug,
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"dmxOnScreen %d %d,%d (r=%dx%d%+d%+d@%d,%d s=%dx%d%+d%+d)\n",
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dmxScreen->index, x, y,
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dmxScreen->rootWidth, dmxScreen->rootHeight,
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dmxScreen->rootX, dmxScreen->rootY,
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dmxScreen->rootXOrigin, dmxScreen->rootYOrigin,
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dmxScreen->scrnWidth, dmxScreen->scrnHeight,
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dmxScreen->scrnX, dmxScreen->scrnY);
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#endif
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if (x >= dmxScreen->rootXOrigin
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&& x < dmxScreen->rootXOrigin + dmxScreen->rootWidth
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&& y >= dmxScreen->rootYOrigin
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&& y < dmxScreen->rootYOrigin + dmxScreen->rootHeight)
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return 1;
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return 0;
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}
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/** Returns non-zero if \a a overlaps \a b. */
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static int
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dmxDoesOverlap(DMXScreenInfo * a, DMXScreenInfo * b)
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{
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if (dmxOnScreen(a->rootXOrigin, a->rootYOrigin, b))
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return 1;
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if (dmxOnScreen(a->rootXOrigin, a->rootYOrigin + a->scrnWidth, b))
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return 1;
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if (dmxOnScreen(a->rootXOrigin + a->scrnHeight, a->rootYOrigin, b))
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return 1;
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if (dmxOnScreen(a->rootXOrigin + a->scrnHeight,
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a->rootYOrigin + a->scrnWidth, b))
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return 1;
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if (dmxOnScreen(b->rootXOrigin, b->rootYOrigin, a))
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return 1;
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if (dmxOnScreen(b->rootXOrigin, b->rootYOrigin + b->scrnWidth, a))
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return 1;
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if (dmxOnScreen(b->rootXOrigin + b->scrnHeight, b->rootYOrigin, a))
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return 1;
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if (dmxOnScreen(b->rootXOrigin + b->scrnHeight,
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b->rootYOrigin + b->scrnWidth, a))
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return 1;
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return 0;
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}
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/** Used with \a dmxInterateOverlap to print out a list of screens which
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* overlap each other. */
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static void *
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dmxPrintOverlap(DMXScreenInfo * dmxScreen, void *closure)
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{
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DMXScreenInfo *a = closure;
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if (dmxScreen != a) {
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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
|
|
};
|