Alexandre Julliard : winex11: Merge consecutive RawMotion events.
Alexandre Julliard
julliard at winehq.org
Wed Apr 27 12:47:27 CDT 2011
Module: wine
Branch: master
Commit: bab850389ae88681f9eaced94fe97469e1fc1d44
URL: http://source.winehq.org/git/wine.git/?a=commit;h=bab850389ae88681f9eaced94fe97469e1fc1d44
Author: Alexandre Julliard <julliard at winehq.org>
Date: Wed Apr 27 16:00:50 2011 +0200
winex11: Merge consecutive RawMotion events.
---
dlls/winex11.drv/event.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 44 insertions(+), 0 deletions(-)
diff --git a/dlls/winex11.drv/event.c b/dlls/winex11.drv/event.c
index 30d8553..acaf49c 100644
--- a/dlls/winex11.drv/event.c
+++ b/dlls/winex11.drv/event.c
@@ -246,6 +246,46 @@ enum event_merge_action
};
/***********************************************************************
+ * merge_raw_motion_events
+ */
+#ifdef HAVE_X11_EXTENSIONS_XINPUT2_H
+static enum event_merge_action merge_raw_motion_events( XIRawEvent *prev, XIRawEvent *next )
+{
+ int i, j, k;
+ unsigned char mask;
+
+ if (!prev->valuators.mask_len) return MERGE_HANDLE;
+ if (!next->valuators.mask_len) return MERGE_HANDLE;
+
+ mask = prev->valuators.mask[0] | next->valuators.mask[0];
+ if (mask == next->valuators.mask[0]) /* keep next */
+ {
+ for (i = j = k = 0; i < 8; i++)
+ {
+ if (XIMaskIsSet( prev->valuators.mask, i ))
+ next->valuators.values[j] += prev->valuators.values[k++];
+ if (XIMaskIsSet( next->valuators.mask, i )) j++;
+ }
+ TRACE( "merging duplicate GenericEvent\n" );
+ return MERGE_DISCARD;
+ }
+ if (mask == prev->valuators.mask[0]) /* keep prev */
+ {
+ for (i = j = k = 0; i < 8; i++)
+ {
+ if (XIMaskIsSet( next->valuators.mask, i ))
+ prev->valuators.values[j] += next->valuators.values[k++];
+ if (XIMaskIsSet( prev->valuators.mask, i )) j++;
+ }
+ TRACE( "merging duplicate GenericEvent\n" );
+ return MERGE_IGNORE;
+ }
+ /* can't merge events with disjoint masks */
+ return MERGE_HANDLE;
+}
+#endif
+
+/***********************************************************************
* merge_events
*
* Try to merge 2 consecutive events.
@@ -289,6 +329,10 @@ static enum event_merge_action merge_events( XEvent *prev, XEvent *next )
return MERGE_IGNORE;
}
break;
+ case GenericEvent:
+ if (next->xcookie.extension != xinput2_opcode) break;
+ if (next->xcookie.evtype != XI_RawMotion) break;
+ return merge_raw_motion_events( prev->xcookie.data, next->xcookie.data );
}
break;
#endif
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