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winex11: Add support for merging redundant events, and use it for ConfigureNotify and MotionNotify.

This commit is contained in:
Alexandre Julliard 2008-03-11 12:11:35 +01:00
parent 4ca754d9a9
commit 0118e0d0f1
1 changed files with 83 additions and 17 deletions
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100
dlls/winex11.drv/event.c
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@ -241,39 +241,105 @@ static Bool filter_event( Display *display, XEvent *event, char *arg )
}
enum event_merge_action
{
MERGE_DISCARD, /* discard the old event */
MERGE_HANDLE, /* handle the old event */
MERGE_KEEP /* keep the old event for future merging */
};
/***********************************************************************
* merge_events
*
* Try to merge 2 consecutive events.
*/
static enum event_merge_action merge_events( XEvent *prev, XEvent *next )
{
if (prev->xany.window != next->xany.window) return MERGE_HANDLE;
switch (prev->type)
{
case ConfigureNotify:
if (prev->xany.window != next->xany.window) break;
switch (next->type)
{
case ConfigureNotify:
TRACE( "discarding duplicate ConfigureNotify for window %lx\n", prev->xany.window );
return MERGE_DISCARD;
case Expose:
case PropertyNotify:
return MERGE_KEEP;
}
break;
case MotionNotify:
if (next->type == MotionNotify)
{
TRACE( "discarding duplicate MotionNotify for window %lx\n", prev->xany.window );
return MERGE_DISCARD;
}
break;
}
return MERGE_HANDLE;
}
/***********************************************************************
* call_event_handler
*/
static inline void call_event_handler( Display *display, XEvent *event )
{
HWND hwnd;
x11drv_event_handler handler;
if (!(handler = find_handler( event->type )))
{
TRACE( "%s for win %lx, ignoring\n", dbgstr_event( event->type ), event->xany.window );
return; /* no handler, ignore it */
}
if (XFindContext( display, event->xany.window, winContext, (char **)&hwnd ) != 0)
hwnd = 0; /* not for a registered window */
if (!hwnd && event->xany.window == root_window) hwnd = GetDesktopWindow();
TRACE( "%s for hwnd/window %p/%lx\n",
dbgstr_event( event->type ), hwnd, event->xany.window );
wine_tsx11_unlock();
handler( hwnd, event );
wine_tsx11_lock();
}
/***********************************************************************
* process_events
*/
static int process_events( Display *display, Bool (*filter)(), ULONG_PTR arg )
{
XEvent event;
HWND hwnd;
XEvent event, prev_event;
int count = 0;
x11drv_event_handler handler;
enum event_merge_action action = MERGE_DISCARD;
prev_event.type = 0;
wine_tsx11_lock();
while (XCheckIfEvent( display, &event, filter, (char *)arg ))
{
count++;
if (XFilterEvent( &event, None )) continue; /* filtered, ignore it */
if (!(handler = find_handler( event.type )))
if (prev_event.type) action = merge_events( &prev_event, &event );
switch( action )
{
TRACE( "%s for win %lx, ignoring\n", dbgstr_event( event.type ), event.xany.window );
continue; /* no handler, ignore it */
case MERGE_DISCARD: /* discard prev, keep new */
prev_event = event;
break;
case MERGE_HANDLE: /* handle prev, keep new */
call_event_handler( display, &prev_event );
prev_event = event;
break;
case MERGE_KEEP: /* handle new, keep prev for future merging */
call_event_handler( display, &event );
break;
}
if (XFindContext( display, event.xany.window, winContext, (char **)&hwnd ) != 0)
hwnd = 0; /* not for a registered window */
if (!hwnd && event.xany.window == root_window) hwnd = GetDesktopWindow();
wine_tsx11_unlock();
TRACE( "%s for hwnd/window %p/%lx\n",
dbgstr_event( event.type ), hwnd, event.xany.window );
handler( hwnd, &event );
wine_tsx11_lock();
}
XFlush( gdi_display );
if (prev_event.type) call_event_handler( display, &prev_event );
wine_tsx11_unlock();
if (count) TRACE( "processed %d events\n", count );
return count;