On 10.11 in 64-bit mode, showing a frame with a PSMTabBarControl
instance somehow causes the event loop to become occupied on
mouse movements, so that moving the mouse in a `2htdp/universe`
program is slow when more than one tab is open in DrRacket. The
modern MMTabBarView widget doesn't have that problem. Also, the
MMTabBarView widget has a Yosemite look (to replace Aqua).
Make the `focus` method shift focus to a floating frame. Also, shift
focus away from the floating frame when `focus` is used in an window
within the current main frame.
Try to tell Macs with two graphics cards that it's ok to
use the low-performance one for the GC bitmap (when
GL is used for that, which is OS X 10.11 and later).
Provided by Eli Barzilay.
This approach is better than a separate process, because creating
too many processes can overwhelm the OS. Also, MCI supports more
sound formats.
Add more agressive re-enabling of screen updates and explicit `update`
calls to avoid partially refreshed frames and never-updated titlebars
on El Capitan.
Also, use `close` instead of `orderOut` to hide a frame. That fixes
problems with closing windows that are in fullscreen mode.
Closesracket/drracket#33
The GC blit implementation used on Mc OS X 10.11 assumed that
the no-GC bitmap is blank. Make it use the given no-GC bitmap.
Also, repair the left-to-right flipping(!) of the GC bitmap,
and repair a backing-scale mismatch that could leave a thin
border around a GC blit.
A relatively late correction to refresh handling for El Capitan
(commit 9bf18505d5) causes a canvas to be refreshed too often
in some cases. Delay the refresh to restore the old timing
without the old bug.
Opening a shared object in global mode risks conflicts with
other shared objects, but opening only one library that way
will hopefully not create conflicts.
The new system control font is (intentially) not associated with a
font family, so it's inaccessible via Pango. A patch to Pango lets
us synthesize and register new families, so the control font can
be made accessible.
The `fullscreen` method implied `show` on Mac OS X and Windows, but
not on Gtk, and a frae shown that was was not properly registered
as shown (e.g., the application could exit). For consistency, adjust
`fullscreen` to not imply `show`. Also, shift to a remaining frame
on Mac OS X when a fullscreen frame is closed.
Previous versions of OS X seem to have automatically disabled
update for a window when flushing is disabled, but now we have to
do it ourselves, otherwise text editors can flicker a lot. (The
system change is probably related to the removal of the
`isFlushWindowDisabled` method of `NSWindow` (which was
deprecated in 10.10).
Closes PR 15121
A better solution would be to implement the dialog, but given
how long it's been broken, maybe no one cares enough for that
to be worthwhile.
