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Flush the display when we poll for events.

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This commit is contained in:
rsc 2003-10-13 17:16:29 +00:00
parent e6f4b2e311
commit 59d7d92ee7
1 changed files with 28 additions and 0 deletions
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28
src/libdraw/x11-event.c
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@ -15,6 +15,24 @@ event(Event *e)
return eread(~0UL, e);
}
static void
eflush(void)
{
/* avoid generating a message if there's nothing to show. */
/* this test isn't perfect, though; could do flushimage(display, 0) then call extract */
/* also: make sure we don't interfere if we're multiprocessing the display */
if(display->locking){
/* if locking is being done by program, this means it can't depend on automatic flush in emouse() etc. */
if(canqlock(&display->qlock)){
if(display->bufp > display->buf)
flushimage(display, 1);
unlockdisplay(display);
}
}else
if(display->bufp > display->buf)
flushimage(display, 1);
}
ulong
eread(ulong keys, Event *e)
{
@ -23,6 +41,8 @@ eread(ulong keys, Event *e)
xmask = ExposureMask;
eflush();
if(keys&Emouse)
xmask |= MouseMask|StructureNotifyMask;
if(keys&Ekeyboard)
@ -103,6 +123,7 @@ ecanmouse(void)
XEvent xe;
Mouse m;
eflush();
again:
if(XCheckWindowEvent(_x.display, _x.drawable, MouseMask, &xe)){
if(xtoplan9mouse(&xe, &m) < 0)
@ -118,6 +139,7 @@ ecankbd(void)
{
XEvent xe;
eflush();
again:
if(XCheckWindowEvent(_x.display, _x.drawable, KeyPressMask, &xe)){
if(xtoplan9kbd(&xe) == -1)
@ -134,3 +156,9 @@ emoveto(Point p)
xmoveto(p);
}
void
esetcursor(Cursor *c)
{
xsetcursor(c);
}