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devdraw/OSX: flush to screen in background, fix resize bug

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This commit is contained in:
Russ Cox 2008-10-08 15:00:02 -07:00
parent 607880ce78
commit d69cf634a8
1 changed files with 35 additions and 2 deletions
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37
src/cmd/devdraw/osx-screen.c
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@ -50,6 +50,8 @@ struct {
CGImageRef image;
CGContextRef windowctx;
PasteboardRef snarf;
int needflush;
QLock flushlock;
} osx;
enum
@ -320,6 +322,8 @@ mouseevent(EventRef event)
// OS X swaps button 2 and 3
but = (but & ~6) | ((but & 4)>>1) | ((but&2)<<1);
but = mouseswap(but);
// Apply keyboard modifiers and pretend it was a real mouse button.
// (Modifiers typed while holding the button go into kbuttons,
// but this one does not.)
@ -507,6 +511,29 @@ eresized(int new)
osx.image = image;
osx.screenimage = m;
osx.screenr = r;
// I'm not 100% sure why this is necessary
// but otherwise some resizes (esp. vertical ones)
// stop updating the screen.
qlock(&osx.flushlock);
QDEndCGContext(GetWindowPort(osx.window), &osx.windowctx);
osx.windowctx = nil;
qunlock(&osx.flushlock);
}
void
flushproc(void *v)
{
for(;;){
if(osx.needflush && osx.windowctx && canqlock(&osx.flushlock)){
if(osx.windowctx){
CGContextFlush(osx.windowctx);
osx.needflush = 0;
}
qunlock(&osx.flushlock);
}
usleep(33333);
}
}
void
@ -515,8 +542,11 @@ _flushmemscreen(Rectangle r)
CGRect cgr;
CGImageRef subimg;
if(osx.windowctx == nil)
qlock(&osx.flushlock);
if(osx.windowctx == nil){
QDBeginCGContext(GetWindowPort(osx.window), &osx.windowctx);
proccreate(flushproc, nil, 256*1024);
}
cgr.origin.x = r.min.x;
cgr.origin.y = r.min.y;
@ -525,7 +555,8 @@ _flushmemscreen(Rectangle r)
subimg = CGImageCreateWithImageInRect(osx.image, cgr);
cgr.origin.y = Dy(osx.screenr) - r.max.y; // XXX how does this make any sense?
CGContextDrawImage(osx.windowctx, cgr, subimg);
CGContextFlush(osx.windowctx);
osx.needflush = 1;
qunlock(&osx.flushlock);
CGImageRelease(subimg);
}
@ -536,6 +567,7 @@ fullscreen(void)
static WindowRef oldwindow;
GDHandle device;
qlock(&osx.flushlock);
if(osx.isfullscreen){
if(osx.windowctx){
QDEndCGContext(GetWindowPort(osx.window), &osx.windowctx);
@ -557,6 +589,7 @@ fullscreen(void)
osx.isfullscreen = 1;
osx.fullscreentime = msec();
}
qunlock(&osx.flushlock);
eresized(1);
}