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-rw-r--r--nx-X11/programs/Xserver/hw/nxagent/Clipboard.c93
1 files changed, 76 insertions, 17 deletions
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c b/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c
index 682dfbab0..f88d7588b 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Clipboard.c
@@ -108,15 +108,21 @@ static SelectionOwner *lastSelectionOwner = NULL;
/*
* cache for targets the current selection owner
- * on the real X server has to offer. We are storing the targets
- * after they have been converted from XlibAtom to Atom.
+ * has to offer. We are storing the targets
+ * after they have been converted
*/
typedef struct _Targets
{
- Atom *targets;
- int numTargets;
+ Bool type; /* EMPTY, FORINT, FORREM */
+ unsigned int numTargets;
+ Atom *forInt; /* Atoms converted for internal -> type Atom, not XlibAtom */
+ XlibAtom *forRem; /* Atoms converted for remote -> type XlibAtom, not Atom */
} Targets;
+#define EMPTY 0
+#define FORREM 1
+#define FORINT 2
+
static Targets *targetCache = NULL;
/* FIXME: can this also be stored per selection? */
@@ -394,7 +400,9 @@ static void printLastServerStat(int index)
static void printTargetCacheStat(int index)
{
- fprintf(stderr, " targetCache[].targets (Atom *) [%p]\n", (void *)targetCache[index].targets);
+ fprintf(stderr, " targetCache[].type (int) [%d]\n", targetCache[index].type);
+ fprintf(stderr, " targetCache[].forInt (Atom *) [%p]\n", (void *)targetCache[index].forInt);
+ fprintf(stderr, " targetCache[].forRem (XlibAtom *) [%p]\n", (void *)targetCache[index].forRem);
fprintf(stderr, " targetCache[].numTargets (int) [%d]\n", targetCache[index].numTargets);
}
@@ -768,14 +776,29 @@ int nxagentFindCurrentSelectionIndex(Atom sel)
return NumCurrentSelections;
}
-void cacheTargets(int index, Atom* targets, int numTargets)
+void cacheTargetsForInt(int index, Atom* targets, int numTargets)
+{
+ #ifdef DEBUG
+ fprintf(stderr, "%s: caching [%d] targets for internal requests\n", __func__, numTargets);
+ #endif
+
+ SAFE_free(targetCache[index].forInt);
+ SAFE_free(targetCache[index].forRem);
+ targetCache[index].type = FORINT;
+ targetCache[index].forInt = targets;
+ targetCache[index].numTargets = numTargets;
+}
+
+void cacheTargetsForRem(int index, XlibAtom* targets, int numTargets)
{
#ifdef DEBUG
- fprintf(stderr, "%s: caching [%d] targets\n", __func__, numTargets);
+ fprintf(stderr, "%s: caching [%d] targets for remote requests\n", __func__, numTargets);
#endif
- SAFE_free(targetCache[index].targets);
- targetCache[index].targets = targets;
+ SAFE_free(targetCache[index].forInt);
+ SAFE_free(targetCache[index].forRem);
+ targetCache[index].type = FORREM;
+ targetCache[index].forRem = targets;
targetCache[index].numTargets = numTargets;
}
@@ -786,7 +809,9 @@ void invalidateTargetCache(int index)
fprintf(stderr, "%s: invalidating target cache [%d]\n", __func__, index);
#endif
- SAFE_free(targetCache[index].targets);
+ SAFE_free(targetCache[index].forInt);
+ SAFE_free(targetCache[index].forRem);
+ targetCache[index].type = EMPTY;
targetCache[index].numTargets = 0;
}
@@ -798,7 +823,9 @@ void invalidateTargetCaches(void)
for (int index = 0; index < nxagentMaxSelections; index++)
{
- SAFE_free(targetCache[index].targets);
+ SAFE_free(targetCache[index].forInt);
+ SAFE_free(targetCache[index].forRem);
+ targetCache[index].type = EMPTY;
targetCache[index].numTargets = 0;
}
}
@@ -1006,7 +1033,39 @@ void nxagentHandleSelectionRequestFromXServer(XEvent *X)
}
else
{
- /* do nothing, let TARGETS be passed on to the owner later */
+ /*
+ * Shortcut: Some applications tend to post multiple
+ * SelectionRequests. Further it can happen that multiple
+ * clients are interested in clipboard content. If we already
+ * know the answer and no intermediate SelectionOwner event
+ * occured we can answer with the cached list of targets.
+ */
+
+ if (targetCache[index].type == FORREM && targetCache[index].forRem)
+ {
+ XlibAtom *targets = targetCache[index].forRem;
+ unsigned int numTargets = targetCache[index].numTargets;
+
+ #ifdef DEBUG
+ fprintf(stderr, "%s: Sending %d cached targets to remote requestor:\n", __func__, numTargets);
+ for (int i = 0; i < numTargets; i++)
+ {
+ fprintf(stderr, "%s: %ld %s\n", __func__, targets[i], NameForRemAtom(targets[i]));
+ }
+ #endif
+
+ XChangeProperty(nxagentDisplay,
+ X->xselectionrequest.requestor,
+ X->xselectionrequest.property,
+ XInternAtom(nxagentDisplay, "ATOM", 0),
+ 32,
+ PropModeReplace,
+ (unsigned char *)targets,
+ numTargets);
+
+ replyRequestSelectionToXServer(X, True);
+ return;
+ }
}
}
else if (X->xselectionrequest.target == serverTIMESTAMP)
@@ -1601,7 +1660,7 @@ Bool nxagentCollectPropertyEventFromXServer(int resource)
32, PropModeReplace,
ulReturnItems, (unsigned char*)targets, 1);
- cacheTargets(index, targets, numTargets);
+ cacheTargetsForInt(index, targets, numTargets);
endTransfer(SELECTION_SUCCESS, index);
}
@@ -1852,7 +1911,7 @@ void nxagentHandleSelectionNotifyFromXServer(XEvent *X)
(unsigned char*)targets,
numTargets);
- SAFE_free(targets);
+ cacheTargetsForRem(index, targets, numTargets);
}
}
else
@@ -2358,13 +2417,13 @@ int nxagentConvertSelection(ClientPtr client, WindowPtr pWin, Atom selection,
* occured we can answer with the cached list of targets.
*/
- if (targetCache[index].targets)
+ if (targetCache[index].type == FORINT && targetCache[index].forInt)
{
- Atom *targets = targetCache[index].targets;
+ Atom *targets = targetCache[index].forInt;
int numTargets = targetCache[index].numTargets;
#ifdef DEBUG
- fprintf(stderr, "%s: Sending %d cached targets:\n", __func__, numTargets);
+ fprintf(stderr, "%s: Sending %d cached targets to internal client:\n", __func__, numTargets);
for (int i = 0; i < numTargets; i++)
{
fprintf(stderr, "%s: %d %s\n", __func__, targets[i], NameForIntAtom(targets[i]));