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Support autoscrolling during dragging in views that need it i.e. NSTableView, NSOutlineView, etc

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/branches/gnustep_testplant_branch@40339 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Marcian Lytwyn 2017-02-12 18:57:48 +00:00
parent 6671471116
commit e7db63c99c
2 changed files with 27 additions and 11 deletions
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32
Source/NSClipView.m
View file

@ -27,8 +27,10 @@
*/
#import "config.h"
#import <Foundation/NSNotification.h>
#import <Foundation/NSDebug.h>
#import <Foundation/NSException.h>
#import <Foundation/NSNotification.h>
#import <Foundation/NSUserDefaults.h>
#import "AppKit/NSClipView.h"
#import "AppKit/NSCursor.h"
@ -491,6 +493,9 @@ static inline NSRect integralRect (NSRect rect, NSView *view)
*/
- (BOOL) autoscroll: (NSEvent*)theEvent
{
static CGFloat ScrollingMargin = 15.0;
CGFloat scrollingMargin;
NSPoint new;
NSPoint delta;
NSRect r;
@ -500,22 +505,27 @@ static inline NSRect integralRect (NSRect rect, NSView *view)
return NO;
}
new = [_documentView convertPoint: [theEvent locationInWindow]
fromView: nil];
// Use defaults value if present...
scrollingMargin = [[NSUserDefaults standardUserDefaults] floatForKey: @"GSAutoScrollingMargin"];
if (scrollingMargin == 0) // otherwise use static coded default...
scrollingMargin = ScrollingMargin;
new = [_documentView convertPoint: [theEvent locationInWindow]
fromView: nil];
r = [self documentVisibleRect];
if (new.x < NSMinX(r))
delta.x = new.x - NSMinX(r);
else if (new.x > NSMaxX(r))
delta.x = new.x - NSMaxX(r);
if ((new.x > NSMinX(r)) && (new.x < NSMinX(r)+scrollingMargin))
delta.x = (new.x - NSMinX(r)) - scrollingMargin;
else if ((new.x > NSMaxX(r)-scrollingMargin) && (new.x < NSMaxX(r)))
delta.x = scrollingMargin - (NSMaxX(r) - new.x);
else
delta.x = 0;
if (new.y < NSMinY(r))
delta.y = new.y - NSMinY(r);
else if (new.y > NSMaxY(r))
delta.y = new.y - NSMaxY(r);
if ((new.y > NSMinY(r)) && (new.y < NSMinY(r)+scrollingMargin))
delta.y = (new.y - NSMinY(r)) - scrollingMargin;
else if ((new.y > NSMaxY(r)-scrollingMargin) && (new.y < NSMaxY(r)))
delta.y = scrollingMargin - (NSMaxY(r) - new.y);
else
delta.y = 0;

6
Source/NSWindow.m
View file

@ -4391,6 +4391,12 @@ checkCursorRectanglesExited(NSView *theView, NSEvent *theEvent, NSPoint lastPoi
{
action = NSDragOperationNone;
}
// Support for autoscrolling...
if ([theEvent subtype] == GSAppKitDraggingUpdate)
{
[v autoscroll: theEvent];
}
e = [NSEvent otherEventWithType: NSAppKitDefined
location: [theEvent locationInWindow]