pandory500/SDL-mirror
2
0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Better handling of multiple queued Cocoa mouse events. Thanks to Christian

Browse source 
Walther for the patch.

   Fixes Bugzilla #353.

--HG--
branch : SDL-1.2
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/branches/SDL-1.2%402332
This commit is contained in:
Ryan C. Gordon 2007-06-04 11:22:23 +00:00
parent 88ccf13d13
commit 6b5b916b0d
1 changed files with 11 additions and 22 deletions
Download patch file Download diff file Expand all files Collapse all files

33
src/video/quartz/SDL_QuartzEvents.m
View file

@ -722,7 +722,6 @@ void QZ_PumpEvents (_THIS)
{
static Uint32 screensaverTicks = 0;
Uint32 nowTicks;
int firstMouseEvent;
CGMouseDelta dx, dy;
NSDate *distantPast;
@ -748,10 +747,7 @@ void QZ_PumpEvents (_THIS)
winRect = NSMakeRect (0, 0, SDL_VideoSurface->w, SDL_VideoSurface->h);
/* send the first mouse event in absolute coordinates */
firstMouseEvent = 1;
/* accumulate any additional mouse moved events into one SDL mouse event */
/* while grabbed, accumulate all mouse moved events into one SDL mouse event */
dx = 0;
dy = 0;
@ -853,29 +849,22 @@ void QZ_PumpEvents (_THIS)
dx += dx1;
dy += dy1;
}
else if (firstMouseEvent) {
else {
/*
Get the first mouse event in a possible
sequence of mouse moved events. Since we
use absolute coordinates, this serves to
compensate any inaccuracy in deltas, and
provides the first known mouse position,
since everything after this uses deltas
Get the absolute mouse location. This is not the
mouse location after the currently processed event,
but the *current* mouse location, i.e. after all
pending events. This means that if there are
multiple mouse moved events in the queue, we make
multiple identical calls to SDL_PrivateMouseMotion(),
but that's no problem since the latter only
generates SDL events for nonzero movements. In my
experience on PBG4/10.4.8, this rarely happens anyway.
*/
NSPoint p;
QZ_GetMouseLocation (this, &p);
SDL_PrivateMouseMotion (0, 0, p.x, p.y);
firstMouseEvent = 0;
}
else {
/*
Get the amount moved since the last drag or move event,
add it on for one big move event at the end.
*/
dx += [ event deltaX ];
dy += [ event deltaY ];
}
/*