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xenocara/xserver/hw/dmx/dmxextension.c
matthieu e927c03e30 Update to xserver 1.18.3. Tested by shadchin@ and naddy@. 
Note that indirect GLX is now disbled by default.
2016-05-29 12:02:34 +00:00

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/*
* Copyright 2003-2004 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.
*/
/*
* Author:
* Rickard E. (Rik) Faith <faith@redhat.com>
* Kevin E. Martin <kem@redhat.com>
*
*/
/** \file
* This file provides the only interface to the X server extension support
* in programs/Xserver/Xext. Those programs should only include dmxext.h
*/
#ifdef HAVE_DMX_CONFIG_H
#include <dmx-config.h>
#endif
#include <stdlib.h>
#include "dmx.h"
#include "dmxinit.h"
#include "dmxextension.h"
#include "dmxwindow.h"
#include "dmxcb.h"
#include "dmxcursor.h"
#include "dmxpixmap.h"
#include "dmxgc.h"
#include "dmxfont.h"
#include "dmxcmap.h"
#include "dmxpict.h"
#include "dmxinput.h"
#include "dmxsync.h"
#include "dmxscrinit.h"
#include "input/dmxinputinit.h"
#include "windowstr.h"
#include "inputstr.h" /* For DeviceIntRec */
#include <X11/extensions/dmxproto.h> /* For DMX_BAD_* */
#include "cursorstr.h"
/* The default font is declared in dix/globals.c, but is not included in
* _any_ header files. */
extern FontPtr defaultFont;
/* Hack to get Present to build (present requires RandR) */
RESTYPE RRCrtcType;
/** This routine provides information to the DMX protocol extension
* about a particular screen. */
Bool
dmxGetScreenAttributes(int physical, DMXScreenAttributesPtr attr)
{
DMXScreenInfo *dmxScreen;
if (physical < 0 || physical >= dmxNumScreens)
return FALSE;
dmxScreen = &dmxScreens[physical];
attr->displayName = dmxScreen->name;
#ifdef PANORAMIX
attr->logicalScreen = noPanoramiXExtension ? dmxScreen->index : 0;
#else
attr->logicalScreen = dmxScreen->index;
#endif
attr->screenWindowWidth = dmxScreen->scrnWidth;
attr->screenWindowHeight = dmxScreen->scrnHeight;
attr->screenWindowXoffset = dmxScreen->scrnX;
attr->screenWindowYoffset = dmxScreen->scrnY;
attr->rootWindowWidth = dmxScreen->rootWidth;
attr->rootWindowHeight = dmxScreen->rootHeight;
attr->rootWindowXoffset = dmxScreen->rootX;
attr->rootWindowYoffset = dmxScreen->rootY;
attr->rootWindowXorigin = dmxScreen->rootXOrigin;
attr->rootWindowYorigin = dmxScreen->rootYOrigin;
return TRUE;
}
/** This routine provides information to the DMX protocol extension
* about a particular window. */
Bool
dmxGetWindowAttributes(WindowPtr pWindow, DMXWindowAttributesPtr attr)
{
dmxWinPrivPtr pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
attr->screen = pWindow->drawable.pScreen->myNum;
attr->window = pWinPriv->window;
attr->pos.x = pWindow->drawable.x;
attr->pos.y = pWindow->drawable.y;
attr->pos.width = pWindow->drawable.width;
attr->pos.height = pWindow->drawable.height;
if (!pWinPriv->window || pWinPriv->offscreen) {
attr->vis.x = 0;
attr->vis.y = 0;
attr->vis.height = 0;
attr->vis.width = 0;
return pWinPriv->window ? TRUE : FALSE;
}
/* Compute display-relative coordinates */
attr->vis.x = pWindow->drawable.x;
attr->vis.y = pWindow->drawable.y;
attr->vis.width = pWindow->drawable.width;
attr->vis.height = pWindow->drawable.height;
if (attr->pos.x < 0) {
attr->vis.x -= attr->pos.x;
attr->vis.width = attr->pos.x + attr->pos.width - attr->vis.x;
}
if (attr->pos.x + attr->pos.width > pWindow->drawable.pScreen->width) {
if (attr->pos.x < 0)
attr->vis.width = pWindow->drawable.pScreen->width;
else
attr->vis.width = pWindow->drawable.pScreen->width - attr->pos.x;
}
if (attr->pos.y < 0) {
attr->vis.y -= attr->pos.y;
attr->vis.height = attr->pos.y + attr->pos.height - attr->vis.y;
}
if (attr->pos.y + attr->pos.height > pWindow->drawable.pScreen->height) {
if (attr->pos.y < 0)
attr->vis.height = pWindow->drawable.pScreen->height;
else
attr->vis.height = pWindow->drawable.pScreen->height - attr->pos.y;
}
/* Convert to window-relative coordinates */
attr->vis.x -= attr->pos.x;
attr->vis.y -= attr->pos.y;
return TRUE;
}
void
dmxGetDesktopAttributes(DMXDesktopAttributesPtr attr)
{
attr->width = dmxGlobalWidth;
attr->height = dmxGlobalHeight;
attr->shiftX = 0; /* NOTE: The upper left hand corner of */
attr->shiftY = 0; /* the desktop is always <0,0>. */
}
/** Return the total number of devices, not just #dmxNumInputs. The
* number returned should be the same as that returned by
* XListInputDevices. */
int
dmxGetInputCount(void)
{
int i, total;
for (total = i = 0; i < dmxNumInputs; i++)
total += dmxInputs[i].numDevs;
return total;
}
/** Return information about the device with id = \a deviceId. This
* information is primarily for the #ProcDMXGetInputAttributes()
* function, which does not have access to the appropriate data
* structure. */
int
dmxGetInputAttributes(int deviceId, DMXInputAttributesPtr attr)
{
int i, j;
DMXInputInfo *dmxInput;
if (deviceId < 0)
return -1;
for (i = 0; i < dmxNumInputs; i++) {
dmxInput = &dmxInputs[i];
for (j = 0; j < dmxInput->numDevs; j++) {
DMXLocalInputInfoPtr dmxLocal = dmxInput->devs[j];
if (deviceId != dmxLocal->pDevice->id)
continue;
attr->isCore = ! !dmxLocal->isCore;
attr->sendsCore = ! !dmxLocal->sendsCore;
attr->detached = ! !dmxInput->detached;
attr->physicalScreen = -1;
attr->physicalId = -1;
attr->name = NULL;
switch (dmxLocal->extType) {
case DMX_LOCAL_TYPE_LOCAL:
attr->inputType = 0;
break;
case DMX_LOCAL_TYPE_CONSOLE:
attr->inputType = 1;
attr->name = dmxInput->name;
attr->physicalId = dmxLocal->deviceId;
break;
case DMX_LOCAL_TYPE_BACKEND:
case DMX_LOCAL_TYPE_COMMON:
attr->inputType = 2;
attr->physicalScreen = dmxInput->scrnIdx;
attr->name = dmxInput->name;
attr->physicalId = dmxLocal->deviceId;
break;
}
return 0; /* Success */
}
}
return -1; /* Failure */
}
/** Reinitialized the cursor boundaries. */
static void
dmxAdjustCursorBoundaries(void)
{
int i;
dmxReInitOrigins();
dmxInitOverlap();
dmxComputeWidthHeight(DMX_NO_RECOMPUTE_BOUNDING_BOX);
dmxConnectionBlockCallback();
for (i = 0; i < dmxNumInputs; i++) {
DMXInputInfo *dmxInput = &dmxInputs[i];
if (!dmxInput->detached)
dmxInputReInit(dmxInput);
}
dmxCheckCursor();
for (i = 0; i < dmxNumInputs; i++) {
DMXInputInfo *dmxInput = &dmxInputs[i];
if (!dmxInput->detached)
dmxInputLateReInit(dmxInput);
}
}
/** Add an input with the specified attributes. If the input is added,
* the physical id is returned in \a deviceId. */
int
dmxAddInput(DMXInputAttributesPtr attr, int *id)
{
int retcode = BadValue;
if (attr->inputType == 1) /* console */
retcode = dmxInputAttachConsole(attr->name, attr->sendsCore, id);
else if (attr->inputType == 2) /* backend */
retcode = dmxInputAttachBackend(attr->physicalScreen,
attr->sendsCore, id);
if (retcode == Success) {
/* Adjust the cursor boundaries */
dmxAdjustCursorBoundaries();
/* Force completion of the changes */
dmxSync(NULL, TRUE);
}
return retcode;
}
/** Remove the input with physical id \a id. */
int
dmxRemoveInput(int id)
{
return dmxInputDetachId(id);
}
/** Return the value of #dmxNumScreens -- the total number of backend
* screens in use (these are logical screens and may be larger than the
* number of backend displays). */
unsigned long
dmxGetNumScreens(void)
{
return dmxNumScreens;
}
/** Make sure that #dmxCreateAndRealizeWindow has been called for \a
* pWindow. */
void
dmxForceWindowCreation(WindowPtr pWindow)
{
dmxWinPrivPtr pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
if (!pWinPriv->window)
dmxCreateAndRealizeWindow(pWindow, TRUE);
}
/** Flush pending syncs for all screens. */
void
dmxFlushPendingSyncs(void)
{
dmxSync(NULL, TRUE);
}
/** Update DMX's screen resources to match those of the newly moved
* and/or resized "root" window. */
void
dmxUpdateScreenResources(ScreenPtr pScreen, int x, int y, int w, int h)
{
DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
WindowPtr pRoot = pScreen->root;
WindowPtr pChild;
Bool anyMarked = FALSE;
/* Handle special case where width and/or height are zero */
if (w == 0 || h == 0) {
w = 1;
h = 1;
}
/* Change screen size */
pScreen->width = w;
pScreen->height = h;
/* Reset the root window's drawable's size */
pRoot->drawable.width = w;
pRoot->drawable.height = h;
/* Set the root window's new winSize and borderSize */
pRoot->winSize.extents.x1 = 0;
pRoot->winSize.extents.y1 = 0;
pRoot->winSize.extents.x2 = w;
pRoot->winSize.extents.y2 = h;
pRoot->borderSize.extents.x1 = 0;
pRoot->borderSize.extents.y1 = 0;
pRoot->borderSize.extents.x2 = w;
pRoot->borderSize.extents.y2 = h;
/* Recompute this screen's mmWidth & mmHeight */
pScreen->mmWidth =
(w * 254 + dmxScreen->beXDPI * 5) / (dmxScreen->beXDPI * 10);
pScreen->mmHeight =
(h * 254 + dmxScreen->beYDPI * 5) / (dmxScreen->beYDPI * 10);
/* Recompute this screen's window's clip rects as follows: */
/* 1. Mark all of root's children's windows */
for (pChild = pRoot->firstChild; pChild; pChild = pChild->nextSib)
anyMarked |= pScreen->MarkOverlappedWindows(pChild, pChild,
(WindowPtr *) NULL);
/* 2. Set the root window's borderClip */
pRoot->borderClip.extents.x1 = 0;
pRoot->borderClip.extents.y1 = 0;
pRoot->borderClip.extents.x2 = w;
pRoot->borderClip.extents.y2 = h;
/* 3. Set the root window's clipList */
if (anyMarked) {
/* If any windows have been marked, set the root window's
* clipList to be broken since it will be recalculated in
* ValidateTree()
*/
RegionBreak(&pRoot->clipList);
}
else {
/* Otherwise, we just set it directly since there are no
* windows visible on this screen
*/
pRoot->clipList.extents.x1 = 0;
pRoot->clipList.extents.y1 = 0;
pRoot->clipList.extents.x2 = w;
pRoot->clipList.extents.y2 = h;
}
/* 4. Revalidate all clip rects and generate expose events */
if (anyMarked) {
pScreen->ValidateTree(pRoot, NULL, VTBroken);
pScreen->HandleExposures(pRoot);
if (pScreen->PostValidateTree)
pScreen->PostValidateTree(pRoot, NULL, VTBroken);
}
}
#ifdef PANORAMIX
#include "panoramiXsrv.h"
/** Change the "screen" window attributes by resizing the actual window
* on the back-end display (if necessary). */
static void
dmxConfigureScreenWindow(int idx, int x, int y, int w, int h)
{
DMXScreenInfo *dmxScreen = &dmxScreens[idx];
ScreenPtr pScreen = screenInfo.screens[idx];
/* Resize "screen" window */
if (dmxScreen->scrnX != x ||
dmxScreen->scrnY != y ||
dmxScreen->scrnWidth != w || dmxScreen->scrnHeight != h) {
dmxResizeScreenWindow(pScreen, x, y, w, h);
}
/* Change "screen" window values */
dmxScreen->scrnX = x;
dmxScreen->scrnY = y;
dmxScreen->scrnWidth = w;
dmxScreen->scrnHeight = h;
}
/** Change the "root" window position and size by resizing the actual
* window on the back-end display (if necessary) and updating all of
* DMX's resources by calling #dmxUpdateScreenResources. */
static void
dmxConfigureRootWindow(int idx, int x, int y, int w, int h)
{
DMXScreenInfo *dmxScreen = &dmxScreens[idx];
WindowPtr pRoot = screenInfo.screens[idx]->root;
/* NOTE: Either this function or the ones that it calls must handle
* the case where w == 0 || h == 0. Currently, the functions that
* this one calls handle that case. */
/* 1. Resize "root" window */
if (dmxScreen->rootX != x ||
dmxScreen->rootY != y ||
dmxScreen->rootWidth != w || dmxScreen->rootHeight != h) {
dmxResizeRootWindow(pRoot, x, y, w, h);
}
/* 2. Update all of the screen's resources associated with this root
* window */
if (dmxScreen->rootWidth != w || dmxScreen->rootHeight != h) {
dmxUpdateScreenResources(screenInfo.screens[idx], x, y, w, h);
}
/* Change "root" window values */
dmxScreen->rootX = x;
dmxScreen->rootY = y;
dmxScreen->rootWidth = w;
dmxScreen->rootHeight = h;
}
/** Change the "root" window's origin by updating DMX's internal data
* structures (dix and Xinerama) to use the new origin and adjust the
* positions of windows that overlap this "root" window. */
static void
dmxSetRootWindowOrigin(int idx, int x, int y)
{
DMXScreenInfo *dmxScreen = &dmxScreens[idx];
ScreenPtr pScreen = screenInfo.screens[idx];
WindowPtr pRoot = pScreen->root;
WindowPtr pChild;
int xoff;
int yoff;
/* Change "root" window's origin */
dmxScreen->rootXOrigin = x;
dmxScreen->rootYOrigin = y;
/* Compute offsets here in case <x,y> has been changed above */
xoff = x - pScreen->x;
yoff = y - pScreen->y;
/* Adjust the root window's position */
pScreen->x = dmxScreen->rootXOrigin;
pScreen->y = dmxScreen->rootYOrigin;
/* Recalculate the Xinerama regions and data structs */
XineramaReinitData();
/* Adjust each of the root window's children */
if (!idx)
ReinitializeRootWindow(screenInfo.screens[0]->root, xoff, yoff);
pChild = pRoot->firstChild;
while (pChild) {
/* Adjust child window's position */
pScreen->MoveWindow(pChild,
pChild->origin.x - wBorderWidth(pChild) - xoff,
pChild->origin.y - wBorderWidth(pChild) - yoff,
pChild->nextSib, VTMove);
/* Note that the call to MoveWindow will eventually call
* dmxPositionWindow which will automatically create a
* window if it is now exposed on screen (for lazy window
* creation optimization) and it will properly set the
* offscreen flag.
*/
pChild = pChild->nextSib;
}
}
/** Configure the attributes of each "screen" and "root" window. */
int
dmxConfigureScreenWindows(int nscreens,
CARD32 *screens,
DMXScreenAttributesPtr attribs, int *errorScreen)
{
int i;
for (i = 0; i < nscreens; i++) {
DMXScreenAttributesPtr attr = &attribs[i];
int idx = screens[i];
DMXScreenInfo *dmxScreen = &dmxScreens[idx];
if (errorScreen)
*errorScreen = i;
if (!dmxScreen->beDisplay)
return DMX_BAD_VALUE;
/* Check for illegal values */
if (idx < 0 || idx >= dmxNumScreens)
return BadValue;
/* The "screen" and "root" windows must have valid sizes */
if (attr->screenWindowWidth <= 0 || attr->screenWindowHeight <= 0 ||
attr->rootWindowWidth < 0 || attr->rootWindowHeight < 0)
return DMX_BAD_VALUE;
/* The "screen" window must fit entirely within the BE display */
if (attr->screenWindowXoffset < 0 ||
attr->screenWindowYoffset < 0 ||
attr->screenWindowXoffset
+ attr->screenWindowWidth > (unsigned) dmxScreen->beWidth ||
attr->screenWindowYoffset
+ attr->screenWindowHeight > (unsigned) dmxScreen->beHeight)
return DMX_BAD_VALUE;
/* The "root" window must fit entirely within the "screen" window */
if (attr->rootWindowXoffset < 0 ||
attr->rootWindowYoffset < 0 ||
attr->rootWindowXoffset
+ attr->rootWindowWidth > attr->screenWindowWidth ||
attr->rootWindowYoffset
+ attr->rootWindowHeight > attr->screenWindowHeight)
return DMX_BAD_VALUE;
/* The "root" window must not expose unaddressable coordinates */
if (attr->rootWindowXorigin < 0 ||
attr->rootWindowYorigin < 0 ||
attr->rootWindowXorigin + attr->rootWindowWidth > 32767 ||
attr->rootWindowYorigin + attr->rootWindowHeight > 32767)
return DMX_BAD_VALUE;
/* The "root" window must fit within the global bounding box */
if (attr->rootWindowXorigin
+ attr->rootWindowWidth > (unsigned) dmxGlobalWidth ||
attr->rootWindowYorigin
+ attr->rootWindowHeight > (unsigned) dmxGlobalHeight)
return DMX_BAD_VALUE;
/* FIXME: Handle the rest of the illegal value checking */
}
/* No illegal values found */
if (errorScreen)
*errorScreen = 0;
for (i = 0; i < nscreens; i++) {
DMXScreenAttributesPtr attr = &attribs[i];
int idx = screens[i];
DMXScreenInfo *dmxScreen = &dmxScreens[idx];
dmxLog(dmxInfo, "Changing screen #%d attributes "
"from %dx%d+%d+%d %dx%d+%d+%d +%d+%d "
"to %dx%d+%d+%d %dx%d+%d+%d +%d+%d\n",
idx,
dmxScreen->scrnWidth, dmxScreen->scrnHeight,
dmxScreen->scrnX, dmxScreen->scrnY,
dmxScreen->rootWidth, dmxScreen->rootHeight,
dmxScreen->rootX, dmxScreen->rootY,
dmxScreen->rootXOrigin, dmxScreen->rootYOrigin,
attr->screenWindowWidth, attr->screenWindowHeight,
attr->screenWindowXoffset, attr->screenWindowYoffset,
attr->rootWindowWidth, attr->rootWindowHeight,
attr->rootWindowXoffset, attr->rootWindowYoffset,
attr->rootWindowXorigin, attr->rootWindowYorigin);
/* Configure "screen" window */
dmxConfigureScreenWindow(idx,
attr->screenWindowXoffset,
attr->screenWindowYoffset,
attr->screenWindowWidth,
attr->screenWindowHeight);
/* Configure "root" window */
dmxConfigureRootWindow(idx,
attr->rootWindowXoffset,
attr->rootWindowYoffset,
attr->rootWindowWidth, attr->rootWindowHeight);
/* Set "root" window's origin */
dmxSetRootWindowOrigin(idx,
attr->rootWindowXorigin,
attr->rootWindowYorigin);
}
/* Adjust the cursor boundaries */
dmxAdjustCursorBoundaries();
/* Force completion of the changes */
dmxSync(NULL, TRUE);
return Success;
}
/** Configure the attributes of the global desktop. */
int
dmxConfigureDesktop(DMXDesktopAttributesPtr attribs)
{
if (attribs->width <= 0 || attribs->width >= 32767 ||
attribs->height <= 0 || attribs->height >= 32767)
return DMX_BAD_VALUE;
/* If the desktop is shrinking, adjust the "root" windows on each
* "screen" window to only show the visible desktop. Also, handle
* the special case where the desktop shrinks such that the it no
* longer overlaps an portion of a "screen" window. */
if (attribs->width < dmxGlobalWidth || attribs->height < dmxGlobalHeight) {
int i;
for (i = 0; i < dmxNumScreens; i++) {
DMXScreenInfo *dmxScreen = &dmxScreens[i];
if (dmxScreen->rootXOrigin
+ dmxScreen->rootWidth > attribs->width ||
dmxScreen->rootYOrigin
+ dmxScreen->rootHeight > attribs->height) {
int w, h;
if ((w = attribs->width - dmxScreen->rootXOrigin) < 0)
w = 0;
if ((h = attribs->height - dmxScreen->rootYOrigin) < 0)
h = 0;
if (w > dmxScreen->scrnWidth)
w = dmxScreen->scrnWidth;
if (h > dmxScreen->scrnHeight)
h = dmxScreen->scrnHeight;
if (w > dmxScreen->rootWidth)
w = dmxScreen->rootWidth;
if (h > dmxScreen->rootHeight)
h = dmxScreen->rootHeight;
dmxConfigureRootWindow(i,
dmxScreen->rootX,
dmxScreen->rootY, w, h);
}
}
}
/* Set the global width/height */
dmxSetWidthHeight(attribs->width, attribs->height);
/* Handle shift[XY] changes */
if (attribs->shiftX || attribs->shiftY) {
int i;
for (i = 0; i < dmxNumScreens; i++) {
ScreenPtr pScreen = screenInfo.screens[i];
WindowPtr pChild = pScreen->root->firstChild;
while (pChild) {
/* Adjust child window's position */
pScreen->MoveWindow(pChild,
pChild->origin.x - wBorderWidth(pChild)
- attribs->shiftX,
pChild->origin.y - wBorderWidth(pChild)
- attribs->shiftY, pChild->nextSib, VTMove);
/* Note that the call to MoveWindow will eventually call
* dmxPositionWindow which will automatically create a
* window if it is now exposed on screen (for lazy
* window creation optimization) and it will properly
* set the offscreen flag.
*/
pChild = pChild->nextSib;
}
}
}
/* Update connection block, Xinerama, etc. -- these appears to
* already be handled in dmxConnectionBlockCallback(), which is
* called from dmxAdjustCursorBoundaries() [below]. */
/* Adjust the cursor boundaries */
dmxAdjustCursorBoundaries();
/* Force completion of the changes */
dmxSync(NULL, TRUE);
return Success;
}
#endif
/** Create the scratch GCs per depth. */
static void
dmxBECreateScratchGCs(int scrnNum)
{
ScreenPtr pScreen = screenInfo.screens[scrnNum];
GCPtr *ppGC = pScreen->GCperDepth;
int i;
for (i = 0; i <= pScreen->numDepths; i++)
dmxBECreateGC(pScreen, ppGC[i]);
}
#ifdef PANORAMIX
static Bool FoundPixImage;
/** Search the Xinerama XRT_PIXMAP resources for the pixmap that needs
* to have its image restored. When it is found, see if there is
* another screen with the same image. If so, copy the pixmap image
* from the existing screen to the newly created pixmap. */
static void
dmxBERestorePixmapImage(void *value, XID id, RESTYPE type, void *p)
{
if ((type & TypeMask) == (XRT_PIXMAP & TypeMask)) {
PixmapPtr pDst = (PixmapPtr) p;
int idx = pDst->drawable.pScreen->myNum;
PanoramiXRes *pXinPix = (PanoramiXRes *) value;
PixmapPtr pPix;
int i;
dixLookupResourceByType((void **) &pPix, pXinPix->info[idx].id,
RT_PIXMAP, NullClient, DixUnknownAccess);
if (pPix != pDst)
return; /* Not a match.... Next! */
FOR_NSCREENS(i) {
PixmapPtr pSrc;
dmxPixPrivPtr pSrcPriv = NULL;
if (i == idx)
continue; /* Self replication is bad */
dixLookupResourceByType((void **) &pSrc, pXinPix->info[i].id,
RT_PIXMAP, NullClient, DixUnknownAccess);
pSrcPriv = DMX_GET_PIXMAP_PRIV(pSrc);
if (pSrcPriv->pixmap) {
DMXScreenInfo *dmxSrcScreen = &dmxScreens[i];
DMXScreenInfo *dmxDstScreen = &dmxScreens[idx];
dmxPixPrivPtr pDstPriv = DMX_GET_PIXMAP_PRIV(pDst);
XImage *img;
int j;
XlibGC gc = NULL;
/* This should never happen, but just in case.... */
if (pSrc->drawable.width != pDst->drawable.width ||
pSrc->drawable.height != pDst->drawable.height)
return;
/* Copy from src pixmap to dst pixmap */
img = XGetImage(dmxSrcScreen->beDisplay,
pSrcPriv->pixmap,
0, 0,
pSrc->drawable.width, pSrc->drawable.height,
-1, ZPixmap);
for (j = 0; j < dmxDstScreen->beNumPixmapFormats; j++) {
if (dmxDstScreen->bePixmapFormats[j].depth == img->depth) {
unsigned long m;
XGCValues v;
m = GCFunction | GCPlaneMask | GCClipMask;
v.function = GXcopy;
v.plane_mask = AllPlanes;
v.clip_mask = None;
gc = XCreateGC(dmxDstScreen->beDisplay,
dmxDstScreen->scrnDefDrawables[j],
m, &v);
break;
}
}
if (gc) {
XPutImage(dmxDstScreen->beDisplay,
pDstPriv->pixmap,
gc, img, 0, 0, 0, 0,
pDst->drawable.width, pDst->drawable.height);
XFreeGC(dmxDstScreen->beDisplay, gc);
FoundPixImage = True;
}
else {
dmxLog(dmxWarning, "Could not create GC\n");
}
XDestroyImage(img);
return;
}
}
}
}
#endif
/** Restore the pixmap image either from another screen or from an image
* that was saved when the screen was previously detached. */
static void
dmxBERestorePixmap(PixmapPtr pPixmap)
{
#ifdef PANORAMIX
int i;
/* If Xinerama is not active, there's nothing we can do (see comment
* in #else below for more info). */
if (noPanoramiXExtension) {
dmxLog(dmxWarning, "Cannot restore pixmap image\n");
return;
}
FoundPixImage = False;
for (i = currentMaxClients; --i >= 0;)
if (clients[i])
FindAllClientResources(clients[i], dmxBERestorePixmapImage,
(void *) pPixmap);
/* No corresponding pixmap image was found on other screens, so we
* need to copy it from the saved image when the screen was detached
* (if available). */
if (!FoundPixImage) {
dmxPixPrivPtr pPixPriv = DMX_GET_PIXMAP_PRIV(pPixmap);
if (pPixPriv->detachedImage) {
ScreenPtr pScreen = pPixmap->drawable.pScreen;
DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
XlibGC gc = NULL;
for (i = 0; i < dmxScreen->beNumPixmapFormats; i++) {
if (dmxScreen->bePixmapFormats[i].depth ==
pPixPriv->detachedImage->depth) {
unsigned long m;
XGCValues v;
m = GCFunction | GCPlaneMask | GCClipMask;
v.function = GXcopy;
v.plane_mask = AllPlanes;
v.clip_mask = None;
gc = XCreateGC(dmxScreen->beDisplay,
dmxScreen->scrnDefDrawables[i], m, &v);
break;
}
}
if (gc) {
XPutImage(dmxScreen->beDisplay,
pPixPriv->pixmap,
gc,
pPixPriv->detachedImage,
0, 0, 0, 0,
pPixmap->drawable.width, pPixmap->drawable.height);
XFreeGC(dmxScreen->beDisplay, gc);
}
else {
dmxLog(dmxWarning, "Cannot restore pixmap image\n");
}
XDestroyImage(pPixPriv->detachedImage);
pPixPriv->detachedImage = NULL;
}
else {
dmxLog(dmxWarning, "Cannot restore pixmap image\n");
}
}
#else
/* If Xinerama is not enabled, then there is no other copy of the
* pixmap image that we can restore. Saving all pixmap data is not
* a feasible option since there is no mechanism for updating pixmap
* data when a screen is detached, which means that the data that
* was previously saved would most likely be out of date. */
dmxLog(dmxWarning, "Cannot restore pixmap image\n");
return;
#endif
}
/** Create resources on the back-end server. This function is called
* from #dmxAttachScreen() via the dix layer's FindAllResources
* function. It walks all resources, compares them to the screen
* number passed in as \a n and calls the appropriate DMX function to
* create the associated resource on the back-end server. */
static void
dmxBECreateResources(void *value, XID id, RESTYPE type, void *n)
{
int scrnNum = (uintptr_t) n;
ScreenPtr pScreen = screenInfo.screens[scrnNum];
if ((type & TypeMask) == (RT_WINDOW & TypeMask)) {
/* Window resources are created below in dmxBECreateWindowTree */
}
else if ((type & TypeMask) == (RT_PIXMAP & TypeMask)) {
PixmapPtr pPix = value;
if (pPix->drawable.pScreen->myNum == scrnNum) {
dmxBECreatePixmap(pPix);
dmxBERestorePixmap(pPix);
}
}
else if ((type & TypeMask) == (RT_GC & TypeMask)) {
GCPtr pGC = value;
if (pGC->pScreen->myNum == scrnNum) {
/* Create the GC on the back-end server */
dmxBECreateGC(pScreen, pGC);
/* Create any pixmaps associated with this GC */
if (!pGC->tileIsPixel) {
dmxBECreatePixmap(pGC->tile.pixmap);
dmxBERestorePixmap(pGC->tile.pixmap);
}
if (pGC->stipple != pScreen->PixmapPerDepth[0]) {
dmxBECreatePixmap(pGC->stipple);
dmxBERestorePixmap(pGC->stipple);
}
if (pGC->font != defaultFont) {
(void) dmxBELoadFont(pScreen, pGC->font);
}
/* Update the GC on the back-end server */
dmxChangeGC(pGC, -1L);
}
}
else if ((type & TypeMask) == (RT_FONT & TypeMask)) {
(void) dmxBELoadFont(pScreen, (FontPtr) value);
}
else if ((type & TypeMask) == (RT_CURSOR & TypeMask)) {
dmxBECreateCursor(pScreen, (CursorPtr) value);
}
else if ((type & TypeMask) == (RT_COLORMAP & TypeMask)) {
ColormapPtr pCmap = value;
if (pCmap->pScreen->myNum == scrnNum)
(void) dmxBECreateColormap((ColormapPtr) value);
#if 0
/* TODO: Recreate Picture and GlyphSet resources */
}
else if ((type & TypeMask) == (PictureType & TypeMask)) {
/* Picture resources are created when windows are created */
}
else if ((type & TypeMask) == (GlyphSetType & TypeMask)) {
dmxBEFreeGlyphSet(pScreen, (GlyphSetPtr) value);
#endif
}
else {
/* Other resource types??? */
}
}
/** Create window hierachy on back-end server. The window tree is
* created in a special order (bottom most subwindow first) so that the
* #dmxCreateNonRootWindow() function does not need to recursively call
* itself to create each window's parents. This is required so that we
* have the opportunity to create each window's border and background
* pixmaps (where appropriate) before the window is created. */
static void
dmxBECreateWindowTree(int idx)
{
DMXScreenInfo *dmxScreen = &dmxScreens[idx];
WindowPtr pRoot = screenInfo.screens[idx]->root;
dmxWinPrivPtr pWinPriv = DMX_GET_WINDOW_PRIV(pRoot);
WindowPtr pWin;
/* Create the pixmaps associated with the root window */
if (!pRoot->borderIsPixel) {
dmxBECreatePixmap(pRoot->border.pixmap);
dmxBERestorePixmap(pRoot->border.pixmap);
}
if (pRoot->backgroundState == BackgroundPixmap) {
dmxBECreatePixmap(pRoot->background.pixmap);
dmxBERestorePixmap(pRoot->background.pixmap);
}
/* Create root window first */
dmxScreen->rootWin = pWinPriv->window = dmxCreateRootWindow(pRoot);
XMapWindow(dmxScreen->beDisplay, dmxScreen->rootWin);
pWin = pRoot->lastChild;
while (pWin) {
pWinPriv = DMX_GET_WINDOW_PRIV(pWin);
/* Create the pixmaps regardless of whether or not the
* window is created or not due to lazy window creation.
*/
if (!pWin->borderIsPixel) {
dmxBECreatePixmap(pWin->border.pixmap);
dmxBERestorePixmap(pWin->border.pixmap);
}
if (pWin->backgroundState == BackgroundPixmap) {
dmxBECreatePixmap(pWin->background.pixmap);
dmxBERestorePixmap(pWin->background.pixmap);
}
/* Reset the window attributes */
dmxGetDefaultWindowAttributes(pWin, &pWinPriv->cmap, &pWinPriv->visual);
/* Create the window */
if (pWinPriv->mapped && !pWinPriv->offscreen)
dmxCreateAndRealizeWindow(pWin, TRUE);
/* Next, create the bottom-most child */
if (pWin->lastChild) {
pWin = pWin->lastChild;
continue;
}
/* If the window has no children, move on to the next higher window */
while (!pWin->prevSib && (pWin != pRoot))
pWin = pWin->parent;
if (pWin->prevSib) {
pWin = pWin->prevSib;
continue;
}
/* When we reach the root window, we are finished */
if (pWin == pRoot)
break;
}
}
/* Refresh screen by generating exposure events for all windows */
static void
dmxForceExposures(int idx)
{
ScreenPtr pScreen = screenInfo.screens[idx];
WindowPtr pRoot = pScreen->root;
Bool anyMarked = FALSE;
WindowPtr pChild;
for (pChild = pRoot->firstChild; pChild; pChild = pChild->nextSib)
anyMarked |= pScreen->MarkOverlappedWindows(pChild, pChild,
(WindowPtr *) NULL);
if (anyMarked) {
/* If any windows have been marked, set the root window's
* clipList to be broken since it will be recalculated in
* ValidateTree()
*/
RegionBreak(&pRoot->clipList);
pScreen->ValidateTree(pRoot, NULL, VTBroken);
pScreen->HandleExposures(pRoot);
if (pScreen->PostValidateTree)
pScreen->PostValidateTree(pRoot, NULL, VTBroken);
}
}
/** Compare the new and old screens to see if they are compatible. */
static Bool
dmxCompareScreens(DMXScreenInfo * new, DMXScreenInfo * old)
{
int i;
if (new->beWidth != old->beWidth)
return FALSE;
if (new->beHeight != old->beHeight)
return FALSE;
if (new->beDepth != old->beDepth)
return FALSE;
if (new->beBPP != old->beBPP)
return FALSE;
if (new->beNumDepths != old->beNumDepths)
return FALSE;
for (i = 0; i < old->beNumDepths; i++)
if (new->beDepths[i] != old->beDepths[i])
return FALSE;
if (new->beNumPixmapFormats != old->beNumPixmapFormats)
return FALSE;
for (i = 0; i < old->beNumPixmapFormats; i++) {
if (new->bePixmapFormats[i].depth != old->bePixmapFormats[i].depth)
return FALSE;
if (new->bePixmapFormats[i].bits_per_pixel !=
old->bePixmapFormats[i].bits_per_pixel)
return FALSE;
if (new->bePixmapFormats[i].scanline_pad !=
old->bePixmapFormats[i].scanline_pad)
return FALSE;
}
if (new->beNumVisuals != old->beNumVisuals)
return FALSE;
for (i = 0; i < old->beNumVisuals; i++) {
if (new->beVisuals[i].visualid != old->beVisuals[i].visualid)
return FALSE;
if (new->beVisuals[i].screen != old->beVisuals[i].screen)
return FALSE;
if (new->beVisuals[i].depth != old->beVisuals[i].depth)
return FALSE;
if (new->beVisuals[i].class != old->beVisuals[i].class)
return FALSE;
if (new->beVisuals[i].red_mask != old->beVisuals[i].red_mask)
return FALSE;
if (new->beVisuals[i].green_mask != old->beVisuals[i].green_mask)
return FALSE;
if (new->beVisuals[i].blue_mask != old->beVisuals[i].blue_mask)
return FALSE;
if (new->beVisuals[i].colormap_size != old->beVisuals[i].colormap_size)
return FALSE;
if (new->beVisuals[i].bits_per_rgb != old->beVisuals[i].bits_per_rgb)
return FALSE;
}
if (new->beDefVisualIndex != old->beDefVisualIndex)
return FALSE;
return TRUE;
}
/** Restore Render's picture */
static void
dmxBERestoreRenderPict(void *value, XID id, void *n)
{
PicturePtr pPicture = value; /* The picture */
DrawablePtr pDraw = pPicture->pDrawable; /* The picture's drawable */
int scrnNum = (uintptr_t) n;
if (pDraw->pScreen->myNum != scrnNum) {
/* Picture not on the screen we are restoring */
return;
}
if (pDraw->type == DRAWABLE_PIXMAP) {
PixmapPtr pPixmap = (PixmapPtr) pDraw;
/* Create and restore the pixmap drawable */
dmxBECreatePixmap(pPixmap);
dmxBERestorePixmap(pPixmap);
}
dmxBECreatePicture(pPicture);
}
/** Restore Render's glyphs */
static void
dmxBERestoreRenderGlyph(void *value, XID id, void *n)
{
GlyphSetPtr glyphSet = value;
int scrnNum = (uintptr_t) n;
dmxGlyphPrivPtr glyphPriv = DMX_GET_GLYPH_PRIV(glyphSet);
DMXScreenInfo *dmxScreen = &dmxScreens[scrnNum];
GlyphRefPtr table;
char *images;
Glyph *gids;
XGlyphInfo *glyphs;
char *pos;
int beret;
int len_images = 0;
int i;
int ctr;
if (glyphPriv->glyphSets[scrnNum]) {
/* Only restore glyphs on the screen we are attaching */
return;
}
/* First we must create the glyph set on the backend. */
if ((beret = dmxBECreateGlyphSet(scrnNum, glyphSet)) != Success) {
dmxLog(dmxWarning,
"\tdmxBERestoreRenderGlyph failed to create glyphset!\n");
return;
}
/* Now for the complex part, restore the glyph data */
table = glyphSet->hash.table;
/* We need to know how much memory to allocate for this part */
for (i = 0; i < glyphSet->hash.hashSet->size; i++) {
GlyphRefPtr gr = &table[i];
GlyphPtr gl = gr->glyph;
if (!gl || gl == DeletedGlyph)
continue;
len_images += gl->size - sizeof(gl->info);
}
/* Now allocate the memory we need */
images = calloc(len_images, sizeof(char));
gids = xallocarray(glyphSet->hash.tableEntries, sizeof(Glyph));
glyphs = xallocarray(glyphSet->hash.tableEntries, sizeof(XGlyphInfo));
pos = images;
ctr = 0;
/* Fill the allocated memory with the proper data */
for (i = 0; i < glyphSet->hash.hashSet->size; i++) {
GlyphRefPtr gr = &table[i];
GlyphPtr gl = gr->glyph;
if (!gl || gl == DeletedGlyph)
continue;
/* First lets put the data into gids */
gids[ctr] = gr->signature;
/* Next do the glyphs data structures */
glyphs[ctr].width = gl->info.width;
glyphs[ctr].height = gl->info.height;
glyphs[ctr].x = gl->info.x;
glyphs[ctr].y = gl->info.y;
glyphs[ctr].xOff = gl->info.xOff;
glyphs[ctr].yOff = gl->info.yOff;
/* Copy the images from the DIX's data into the buffer */
memcpy(pos, gl + 1, gl->size - sizeof(gl->info));
pos += gl->size - sizeof(gl->info);
ctr++;
}
/* Now restore the glyph data */
XRenderAddGlyphs(dmxScreen->beDisplay, glyphPriv->glyphSets[scrnNum],
gids, glyphs, glyphSet->hash.tableEntries, images,
len_images);
/* Clean up */
free(images);
free(gids);
free(glyphs);
}
/** Reattach previously detached back-end screen. */
int
dmxAttachScreen(int idx, DMXScreenAttributesPtr attr)
{
ScreenPtr pScreen;
DMXScreenInfo *dmxScreen;
CARD32 scrnNum = idx;
DMXScreenInfo oldDMXScreen;
int i;
/* Return failure if dynamic addition/removal of screens is disabled */
if (!dmxAddRemoveScreens) {
dmxLog(dmxWarning,
"Attempting to add a screen, but the AddRemoveScreen\n");
dmxLog(dmxWarning,
"extension has not been enabled. To enable this extension\n");
dmxLog(dmxWarning,
"add the \"-addremovescreens\" option either to the command\n");
dmxLog(dmxWarning, "line or in the configuration file.\n");
return 1;
}
/* Cannot add a screen that does not exist */
if (idx < 0 || idx >= dmxNumScreens)
return 1;
pScreen = screenInfo.screens[idx];
dmxScreen = &dmxScreens[idx];
/* Cannot attach to a screen that is already opened */
if (dmxScreen->beDisplay) {
dmxLog(dmxWarning,
"Attempting to add screen #%d but a screen already exists\n",
idx);
return 1;
}
dmxLogOutput(dmxScreen, "Attaching screen #%d\n", idx);
/* Save old info */
oldDMXScreen = *dmxScreen;
/* Copy the name to the new screen */
dmxScreen->name = strdup(attr->displayName);
/* Open display and get all of the screen info */
if (!dmxOpenDisplay(dmxScreen)) {
dmxLog(dmxWarning,
"dmxOpenDisplay: Unable to open display %s\n", dmxScreen->name);
/* Restore the old screen */
*dmxScreen = oldDMXScreen;
return 1;
}
dmxSetErrorHandler(dmxScreen);
dmxCheckForWM(dmxScreen);
dmxGetScreenAttribs(dmxScreen);
if (!dmxGetVisualInfo(dmxScreen)) {
dmxLog(dmxWarning, "dmxGetVisualInfo: No matching visuals found\n");
XFree(dmxScreen->beVisuals);
XCloseDisplay(dmxScreen->beDisplay);
/* Restore the old screen */
*dmxScreen = oldDMXScreen;
return 1;
}
dmxGetColormaps(dmxScreen);
dmxGetPixmapFormats(dmxScreen);
/* Verify that the screen to be added has the same info as the
* previously added screen. */
if (!dmxCompareScreens(dmxScreen, &oldDMXScreen)) {
dmxLog(dmxWarning,
"New screen data (%s) does not match previously\n",
dmxScreen->name);
dmxLog(dmxWarning, "attached screen data (%s)\n", oldDMXScreen.name);
dmxLog(dmxWarning,
"All data must match in order to attach to screen #%d\n", idx);
XFree(dmxScreen->beVisuals);
XFree(dmxScreen->beDepths);
XFree(dmxScreen->bePixmapFormats);
XCloseDisplay(dmxScreen->beDisplay);
/* Restore the old screen */
*dmxScreen = oldDMXScreen;
return 1;
}
/* Initialize the BE screen resources */
dmxBEScreenInit(screenInfo.screens[idx]);
/* TODO: Handle GLX visual initialization. GLXProxy needs to be
* updated to handle dynamic addition/removal of screens. */
/* Create default stipple */
dmxBECreatePixmap(pScreen->PixmapPerDepth[0]);
dmxBERestorePixmap(pScreen->PixmapPerDepth[0]);
/* Create the scratch GCs */
dmxBECreateScratchGCs(idx);
/* Create the default font */
(void) dmxBELoadFont(pScreen, defaultFont);
/* Create all resources that don't depend on windows */
for (i = currentMaxClients; --i >= 0;)
if (clients[i])
FindAllClientResources(clients[i], dmxBECreateResources,
(void *) (uintptr_t) idx);
/* Create window hierarchy (top down) */
dmxBECreateWindowTree(idx);
/* Restore the picture state for RENDER */
for (i = currentMaxClients; --i >= 0;)
if (clients[i])
FindClientResourcesByType(clients[i], PictureType,
dmxBERestoreRenderPict,
(void *) (uintptr_t) idx);
/* Restore the glyph state for RENDER */
for (i = currentMaxClients; --i >= 0;)
if (clients[i])
FindClientResourcesByType(clients[i], GlyphSetType,
dmxBERestoreRenderGlyph,
(void *) (uintptr_t) idx);
/* Refresh screen by generating exposure events for all windows */
dmxForceExposures(idx);
dmxSync(&dmxScreens[idx], TRUE);
/* We used these to compare the old and new screens. They are no
* longer needed since we have a newly attached screen, so we can
* now free the old screen's resources. */
XFree(oldDMXScreen.beVisuals);
XFree(oldDMXScreen.beDepths);
XFree(oldDMXScreen.bePixmapFormats);
/* TODO: should oldDMXScreen.name be freed?? */
#ifdef PANORAMIX
if (!noPanoramiXExtension)
return dmxConfigureScreenWindows(1, &scrnNum, attr, NULL);
else
#endif
return 0; /* Success */
}
/*
* Resources that may have state on the BE server and need to be freed:
*
* RT_NONE
* RT_WINDOW
* RT_PIXMAP
* RT_GC
* RT_FONT
* RT_CURSOR
* RT_COLORMAP
* RT_CMAPENTRY
* RT_OTHERCLIENT
* RT_PASSIVEGRAB
* XRT_WINDOW
* XRT_PIXMAP
* XRT_GC
* XRT_COLORMAP
* XRT_PICTURE
* PictureType
* PictFormatType
* GlyphSetType
* ClientType
* EventType
* RT_INPUTCLIENT
* XETrapType
* RTCounter
* RTAwait
* RTAlarmClient
* RT_XKBCLIENT
* RTContext
* TagResType
* StalledResType
* SecurityAuthorizationResType
* RTEventClient
* __glXContextRes
* __glXClientRes
* __glXPixmapRes
* __glXWindowRes
* __glXPbufferRes
*/
#ifdef PANORAMIX
/** Search the Xinerama XRT_PIXMAP resources for the pixmap that needs
* to have its image saved. */
static void
dmxBEFindPixmapImage(void *value, XID id, RESTYPE type, void *p)
{
if ((type & TypeMask) == (XRT_PIXMAP & TypeMask)) {
PixmapPtr pDst = (PixmapPtr) p;
int idx = pDst->drawable.pScreen->myNum;
PanoramiXRes *pXinPix = (PanoramiXRes *) value;
PixmapPtr pPix;
int i;
dixLookupResourceByType((void **) &pPix, pXinPix->info[idx].id,
RT_PIXMAP, NullClient, DixUnknownAccess);
if (pPix != pDst)
return; /* Not a match.... Next! */
FOR_NSCREENS(i) {
PixmapPtr pSrc;
dmxPixPrivPtr pSrcPriv = NULL;
if (i == idx)
continue; /* Self replication is bad */
dixLookupResourceByType((void **) &pSrc, pXinPix->info[i].id,
RT_PIXMAP, NullClient, DixUnknownAccess);
pSrcPriv = DMX_GET_PIXMAP_PRIV(pSrc);
if (pSrcPriv->pixmap) {
FoundPixImage = True;
return;
}
}
}
}
#endif
/** Save the pixmap image only when there is not another screen with
* that pixmap from which the image can be read when the screen is
* reattached. To do this, we first try to find a pixmap on another
* screen corresponding to the one we are trying to save. If we find
* one, then we do not need to save the image data since during
* reattachment, the image data can be read from that other pixmap.
* However, if we do not find one, then we need to save the image data.
* The common case for these are for the default stipple and root
* tile. */
static void
dmxBESavePixmap(PixmapPtr pPixmap)
{
#ifdef PANORAMIX
int i;
/* If Xinerama is not active, there's nothing we can do (see comment
* in #else below for more info). */
if (noPanoramiXExtension)
return;
FoundPixImage = False;
for (i = currentMaxClients; --i >= 0;)
if (clients[i])
FindAllClientResources(clients[i], dmxBEFindPixmapImage,
(void *) pPixmap);
/* Save the image only if there is no other screens that have a
* pixmap that corresponds to the one we are trying to save. */
if (!FoundPixImage) {
dmxPixPrivPtr pPixPriv = DMX_GET_PIXMAP_PRIV(pPixmap);
if (!pPixPriv->detachedImage) {
ScreenPtr pScreen = pPixmap->drawable.pScreen;
DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
pPixPriv->detachedImage = XGetImage(dmxScreen->beDisplay,
pPixPriv->pixmap,
0, 0,
pPixmap->drawable.width,
pPixmap->drawable.height,
-1, ZPixmap);
if (!pPixPriv->detachedImage)
dmxLog(dmxWarning, "Cannot save pixmap image\n");
}
}
#else
/* NOTE: The only time there is a pixmap on another screen that
* corresponds to the one we are trying to save is when Xinerama is
* active. Otherwise, the pixmap image data is only stored on a
* single screen, which means that once it is detached, that data is
* lost. We could save the data here, but then that would require
* us to implement the ability for Xdmx to keep the pixmap up to
* date while the screen is detached, which is beyond the scope of
* the current project. */
return;
#endif
}
/** Destroy resources on the back-end server. This function is called
* from #dmxDetachScreen() via the dix layer's FindAllResources
* function. It walks all resources, compares them to the screen
* number passed in as \a n and calls the appropriate DMX function to
* free the associated resource on the back-end server. */
static void
dmxBEDestroyResources(void *value, XID id, RESTYPE type, void *n)
{
int scrnNum = (uintptr_t) n;
ScreenPtr pScreen = screenInfo.screens[scrnNum];
if ((type & TypeMask) == (RT_WINDOW & TypeMask)) {
/* Window resources are destroyed below in dmxBEDestroyWindowTree */
}
else if ((type & TypeMask) == (RT_PIXMAP & TypeMask)) {
PixmapPtr pPix = value;
if (pPix->drawable.pScreen->myNum == scrnNum) {
dmxBESavePixmap(pPix);
dmxBEFreePixmap(pPix);
}
}
else if ((type & TypeMask) == (RT_GC & TypeMask)) {
GCPtr pGC = value;
if (pGC->pScreen->myNum == scrnNum)
dmxBEFreeGC(pGC);
}
else if ((type & TypeMask) == (RT_FONT & TypeMask)) {
dmxBEFreeFont(pScreen, (FontPtr) value);
}
else if ((type & TypeMask) == (RT_CURSOR & TypeMask)) {
dmxBEFreeCursor(pScreen, (CursorPtr) value);
}
else if ((type & TypeMask) == (RT_COLORMAP & TypeMask)) {
ColormapPtr pCmap = value;
if (pCmap->pScreen->myNum == scrnNum)
dmxBEFreeColormap((ColormapPtr) value);
}
else if ((type & TypeMask) == (PictureType & TypeMask)) {
PicturePtr pPict = value;
if (pPict->pDrawable->pScreen->myNum == scrnNum) {
/* Free the pixmaps on the backend if needed */
if (pPict->pDrawable->type == DRAWABLE_PIXMAP) {
PixmapPtr pPixmap = (PixmapPtr) (pPict->pDrawable);
dmxBESavePixmap(pPixmap);
dmxBEFreePixmap(pPixmap);
}
dmxBEFreePicture((PicturePtr) value);
}
}
else if ((type & TypeMask) == (GlyphSetType & TypeMask)) {
dmxBEFreeGlyphSet(pScreen, (GlyphSetPtr) value);
}
else {
/* Other resource types??? */
}
}
/** Destroy the scratch GCs that are created per depth. */
static void
dmxBEDestroyScratchGCs(int scrnNum)
{
ScreenPtr pScreen = screenInfo.screens[scrnNum];
GCPtr *ppGC = pScreen->GCperDepth;
int i;
for (i = 0; i <= pScreen->numDepths; i++)
dmxBEFreeGC(ppGC[i]);
}
/** Destroy window hierachy on back-end server. To ensure that all
* XDestroyWindow() calls succeed, they must be performed in a bottom
* up order so that windows are not destroyed before their children.
* XDestroyWindow(), which is called from #dmxBEDestroyWindow(), will
* destroy a window as well as all of it's children. */
static void
dmxBEDestroyWindowTree(int idx)
{
WindowPtr pWin = screenInfo.screens[idx]->root;
WindowPtr pChild = pWin;
while (1) {
if (pChild->firstChild) {
pChild = pChild->firstChild;
continue;
}
/* Destroy the window */
dmxBEDestroyWindow(pChild);
/* Make sure we destroy the window's border and background
* pixmaps if they exist */
if (!pChild->borderIsPixel) {
dmxBESavePixmap(pChild->border.pixmap);
dmxBEFreePixmap(pChild->border.pixmap);
}
if (pChild->backgroundState == BackgroundPixmap) {
dmxBESavePixmap(pChild->background.pixmap);
dmxBEFreePixmap(pChild->background.pixmap);
}
while (!pChild->nextSib && (pChild != pWin)) {
pChild = pChild->parent;
dmxBEDestroyWindow(pChild);
if (!pChild->borderIsPixel) {
dmxBESavePixmap(pChild->border.pixmap);
dmxBEFreePixmap(pChild->border.pixmap);
}
if (pChild->backgroundState == BackgroundPixmap) {
dmxBESavePixmap(pChild->background.pixmap);
dmxBEFreePixmap(pChild->background.pixmap);
}
}
if (pChild == pWin)
break;
pChild = pChild->nextSib;
}
}
/** Detach back-end screen. */
int
dmxDetachScreen(int idx)
{
DMXScreenInfo *dmxScreen = &dmxScreens[idx];
int i;
/* Return failure if dynamic addition/removal of screens is disabled */
if (!dmxAddRemoveScreens) {
dmxLog(dmxWarning,
"Attempting to remove a screen, but the AddRemoveScreen\n");
dmxLog(dmxWarning,
"extension has not been enabled. To enable this extension\n");
dmxLog(dmxWarning,
"add the \"-addremovescreens\" option either to the command\n");
dmxLog(dmxWarning, "line or in the configuration file.\n");
return 1;
}
/* Cannot remove a screen that does not exist */
if (idx < 0 || idx >= dmxNumScreens)
return 1;
/* Cannot detach from a screen that is not opened */
if (!dmxScreen->beDisplay) {
dmxLog(dmxWarning,
"Attempting to remove screen #%d but it has not been opened\n",
idx);
return 1;
}
dmxLogOutput(dmxScreen, "Detaching screen #%d\n", idx);
/* Detach input */
dmxInputDetachAll(dmxScreen);
/* Save all relevant state (TODO) */
/* Free all non-window resources related to this screen */
for (i = currentMaxClients; --i >= 0;)
if (clients[i])
FindAllClientResources(clients[i], dmxBEDestroyResources,
(void *) (uintptr_t) idx);
/* Free scratch GCs */
dmxBEDestroyScratchGCs(idx);
/* Free window resources related to this screen */
dmxBEDestroyWindowTree(idx);
/* Free default stipple */
dmxBESavePixmap(screenInfo.screens[idx]->PixmapPerDepth[0]);
dmxBEFreePixmap(screenInfo.screens[idx]->PixmapPerDepth[0]);
/* Free the remaining screen resources and close the screen */
dmxBECloseScreen(screenInfo.screens[idx]);
/* Adjust the cursor boundaries (paints detached console window) */
dmxAdjustCursorBoundaries();
return 0; /* Success */
}
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