Changeset 36750 for branches/eam_branches/ipp-20140423/Ohana/src/kapa2/src/EventLoop.c

Timestamp:

May 14, 2014, 10:33:30 AM (12 years ago)

Author:

eugene

Message:

keep kapa display operations in sync with remote X client; remove unused variables in coordmosaic

File:

• branches/eam_branches/ipp-20140423/Ohana/src/kapa2/src/EventLoop.c (modified) (3 diffs)

branches/eam_branches/ipp-20140423/Ohana/src/kapa2/src/EventLoop.c

@@ -1 +1 @@
 # include "Ximage.h"
+# define DEBUG 0
 
 /* list events being selected below, all other masks are ignored */ 
@@ -6 +7 @@
 int LastEvent (Display *display, int type, XEvent *event) {
 
-  int found;
+  int found, Nfound;
 
   found = FALSE;
+  Nfound = 0;
   while (XCheckTypedEvent (display, type, event)) {
+    // If the link is slow, then I should wait a little while for some config events to
+    // build up (typically, the window is being dragged around, so we get a whole series of 
+    // config events.  the flush / sync time is slow on a slow link, so we should try to wait
+    // for the config events to stop, but on a timescale deteremined by the flush/sync time
+    // if (type == ConfigureNotify) fprintf (stderr, "config (%d)\n", Nfound);
+    Nfound ++;
     found = TRUE;
+  }
+  if (DEBUG && found) {
+    if (type == ConfigureNotify) fprintf (stderr, "config (%d)\n", Nfound);
+    if (type == CirculateNotify) fprintf (stderr, "circul (%d)\n", Nfound);
+    if (type == Expose) fprintf (stderr, "expose (%d)\n", Nfound);
+  }
+
+  // if I have a ConfigureNotify event, I should purge all Expose events as well:
+  if (found && (type == ConfigureNotify)) {
+    XEvent discard;
+    while (XCheckTypedEvent (display, Expose, &discard));
   }
   return (found);
@@ -38 +57 @@
 
     if (XEventsQueued (display, QueuedAfterFlush) < 1) {
-      /* fprintf (stderr, "."); */
       usleep (50000);
       continue;
     }
 
+    // If I have a config event, I want to also purge all expose events
+
     /* grab the last entry for these events */
-    if (LastEvent (display, ConfigureNotify, &event)) Reconfig (&event);
-    if (LastEvent (display, CirculateNotify, &event)) Reconfig (&event);
-    if (LastEvent (display, Expose,          &event)) Refresh ();
+    if (LastEvent (display, ConfigureNotify, &event)) { Reconfig (&event); continue; }
+    if (LastEvent (display, CirculateNotify, &event)) { Reconfig (&event); continue; }
+    if (LastEvent (display, Expose,          &event)) { Refresh (); continue; }
     if (LastEvent (display, MappingNotify,   &event)) XRefreshKeyboardMapping ((XMappingEvent *) &event);
     if (LastEvent (display, MotionNotify,    &event)) UpdatePointer (graphic, (XMotionEvent *) &event);