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new: render to dom only the visible stuff

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This commit is contained in:
daboe01
2016-05-27 21:24:30 +02:00
parent f161f723d7
commit bc9beb1e87
2 changed files with 100 additions and 11 deletions
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AppKit/CPTextView/CPTextView.j
+83
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@@ -138,6 +138,9 @@ var kDelegateRespondsTo_textShouldBeginEditing
int _stickyXLocation;
CPArray _selectionSpans;
CPView _observedClipView;
CGRect _exposedRect;
CPTimer _scrollingTimer;
}
@@ -248,6 +251,86 @@ var kDelegateRespondsTo_textShouldBeginEditing
[super _addObservers];
[self _setObserveWindowKeyNotifications:YES];
[self _startObservingClipView];
}
- (void)_startObservingClipView
{
if (!_observedClipView)
return;
var defaultCenter = [CPNotificationCenter defaultCenter];
[_observedClipView setPostsFrameChangedNotifications:YES];
[_observedClipView setPostsBoundsChangedNotifications:YES];
[defaultCenter addObserver:self
selector:@selector(superviewFrameChanged:)
name:CPViewFrameDidChangeNotification
object:_observedClipView];
[defaultCenter addObserver:self
selector:@selector(superviewBoundsChanged:)
name:CPViewBoundsDidChangeNotification
object:_observedClipView];
}
- (CGRect)exposedRect
{
if (!_exposedRect)
{
var superview = [self superview];
if ([superview isKindOfClass:[CPClipView class]])
_exposedRect = [superview bounds];
else
_exposedRect = [self bounds];
}
return _exposedRect;
}
/*!
@ignore
*/
- (void)superviewBoundsChanged:(CPNotification)aNotification
{
_exposedRect = nil;
[self setNeedsDisplay:YES];
}
/*!
@ignore
*/
- (void)superviewFrameChanged:(CPNotification)aNotification
{
_exposedRect = nil;
}
- (void)viewWillMoveToSuperview:(CPView)aView
{
if ([aView isKindOfClass:[CPClipView class]])
_observedClipView = aView;
else
[self _stopObservingClipView];
[super viewWillMoveToSuperview:aView];
}
- (void)_stopObservingClipView
{
if (!_observedClipView)
return;
var defaultCenter = [CPNotificationCenter defaultCenter];
[defaultCenter removeObserver:self
name:CPViewFrameDidChangeNotification
object:_observedClipView];
[defaultCenter removeObserver:self
name:CPViewBoundsDidChangeNotification
object:_observedClipView];
_observedClipView = nil;
}
- (void)_windowDidResignKey:(CPNotification)aNotification