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libs-gui/Source/NSCell.m
Nicola Pero 9dfbbceaf2 Updated for changes in semantics of NSMutableAttributedString -string 
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@12497 72102866-910b-0410-8b05-ffd578937521
2002-02-11 17:21:13 +00:00

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/** <title>NSCell</title>
<abstract>The abstract cell class</abstract>
Copyright (C) 1996 Free Software Foundation, Inc.
Author: Scott Christley <scottc@net-community.com>
Date: 1996
Modifications: Felipe A. Rodriguez <far@ix.netcom.com>
Date: August 1998
Rewrite: Multiple authors
Date: 1999
Editing, formatters: Nicola Pero <nicola@brainstorm.co.uk>
Date: 2000
This file is part of the GNUstep GUI Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; see the file COPYING.LIB.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <gnustep/gui/config.h>
#include <Foundation/NSString.h>
#include <Foundation/NSGeometry.h>
#include <Foundation/NSException.h>
#include <Foundation/NSValue.h>
#include <AppKit/AppKitExceptions.h>
#include <AppKit/NSApplication.h>
#include <AppKit/NSWindow.h>
#include <AppKit/NSImage.h>
#include <AppKit/NSView.h>
#include <AppKit/NSControl.h>
#include <AppKit/NSCell.h>
#include <AppKit/NSCursor.h>
#include <AppKit/NSEvent.h>
#include <AppKit/NSGraphics.h>
#include <AppKit/NSFont.h>
#include <AppKit/NSColor.h>
#include <AppKit/NSParagraphStyle.h>
#include <AppKit/NSMenu.h>
#include <AppKit/PSOperators.h>
static Class colorClass;
static Class cellClass;
static Class fontClass;
static Class imageClass;
static NSColor *txtCol;
static NSColor *dtxtCol;
static NSColor *shadowCol;
@interface NSCell (PrivateColor)
+ (void) _systemColorsChanged: (NSNotification*)n;
@end
@implementation NSCell (PrivateColor)
+ (void) _systemColorsChanged: (NSNotification*)n
{
ASSIGN (txtCol, [colorClass controlTextColor]);
ASSIGN (dtxtCol, [colorClass disabledControlTextColor]);
ASSIGN (shadowCol, [colorClass controlDarkShadowColor]);
}
@end
@implementation NSCell
/*
* Class methods
*/
+ (void) initialize
{
if (self == [NSCell class])
{
[self setVersion: 1];
colorClass = [NSColor class];
cellClass = [NSCell class];
fontClass = [NSFont class];
imageClass = [NSImage class];
/*
* Watch for changes to system colors, and simulate an initial change
* in order to set up our defaults.
*/
[[NSNotificationCenter defaultCenter]
addObserver: self
selector: @selector(_systemColorsChanged:)
name: NSSystemColorsDidChangeNotification
object: nil];
[self _systemColorsChanged: nil];
}
}
+ (NSMenu*)defaultMenu
{
return nil;
}
+ (BOOL) prefersTrackingUntilMouseUp
{
return NO;
}
/*
* Instance methods
*/
- (id) init
{
return [self initTextCell: @""];
}
- (id) initImageCell: (NSImage*)anImage
{
_cell.type = NSImageCellType;
_cell_image = RETAIN (anImage);
_cell.image_position = NSImageOnly;
_font = RETAIN ([fontClass userFontOfSize: 0]);
// Implicitly set by allocation:
//
//_font = nil;
//_cell.contents_is_attributed_string = NO;
//_cell.is_highlighted = NO;
//_cell.is_disabled = NO;
//_cell.is_editable = NO;
//_cell.is_rich_text = NO;
//_cell.imports_graphics = NO;
//_cell.shows_first_responder = NO;
//_cell.refuses_first_responder = NO;
//_cell.sends_action_on_end_editing = NO;
//_cell.is_bordered = NO;
//_cell.is_bezeled = NO;
//_cell.is_scrollable = NO;
//_cell.is_selectable = NO;
//_cell.is_continuous = NO;
//_cell.state = 0;
_action_mask = NSLeftMouseUpMask;
return self;
}
- (id) initTextCell: (NSString*)aString
{
_cell.type = NSTextCellType;
_contents = RETAIN (aString);
_font = RETAIN ([fontClass userFontOfSize: 0]);
// Implicitly set by allocation:
//
//_cell.contents_is_attributed_string = NO;
//_cell_image = nil;
//_cell.image_position = NSNoImage;
//_cell.is_disabled = NO;
//_cell.state = 0;
//_cell.is_highlighted = NO;
//_cell.is_editable = NO;
//_cell.is_bordered = NO;
//_cell.is_bezeled = NO;
//_cell.is_scrollable = NO;
//_cell.is_selectable = NO;
//_cell.is_continuous = NO;
_action_mask = NSLeftMouseUpMask;
return self;
}
- (void) dealloc
{
TEST_RELEASE (_contents);
TEST_RELEASE (_cell_image);
TEST_RELEASE (_font);
TEST_RELEASE (_represented_object);
TEST_RELEASE (_objectValue);
TEST_RELEASE (_formatter);
TEST_RELEASE (_menu);
[super dealloc];
}
/*
* Setting the NSCell's Value
*/
- (id) objectValue
{
if (_cell.has_valid_object_value)
{
return _objectValue;
}
else
{
return nil;
}
}
- (BOOL) hasValidObjectValue
{
return _cell.has_valid_object_value;
}
- (double) doubleValue
{
if (_cell.contents_is_attributed_string == NO)
{
return [_contents doubleValue];
}
else
{
return [[(NSAttributedString *)_contents string] doubleValue];
}
}
- (float) floatValue
{
if (_cell.contents_is_attributed_string == NO)
{
return [_contents floatValue];
}
else
{
return [[(NSAttributedString *)_contents string] floatValue];
}
}
- (int) intValue
{
if (_cell.contents_is_attributed_string == NO)
{
return [_contents intValue];
}
else
{
return [[(NSAttributedString *)_contents string] intValue];
}
}
- (NSString*) stringValue
{
if (_cell.contents_is_attributed_string == NO)
{
return _contents;
}
else
{
return AUTORELEASE ([[(NSAttributedString *)_contents string] copy]);
}
}
- (void) setObjectValue: (id)object
{
id newContents;
ASSIGN (_objectValue, object);
newContents = [_formatter stringForObjectValue: _objectValue];
if (newContents != nil)
{
_cell.has_valid_object_value = YES;
}
else
{
if ((_formatter == nil)
&& ([object isKindOfClass: [NSString class]] == YES))
{
newContents = _objectValue;
_cell.has_valid_object_value = YES;
}
else
{
newContents = [_objectValue description];
_cell.has_valid_object_value = NO;
}
}
ASSIGN (_contents, newContents);
_cell.contents_is_attributed_string = NO;
}
- (void) setDoubleValue: (double)aDouble
{
NSNumber *number;
// NB: GNUstep can set a double value for an image cell
number = [NSNumber numberWithDouble: aDouble];
[self setObjectValue: number];
}
- (void) setFloatValue: (float)aFloat
{
NSNumber *number;
// NB: GNUstep can set a float value for an image cell.
// NSSliderCell is an example of it!
number = [NSNumber numberWithFloat: aFloat];
[self setObjectValue: number];
}
- (void) setIntValue: (int)anInt
{
NSNumber *number;
// NB: GNUstep can set an int value for an image cell.
number = [NSNumber numberWithInt: anInt];
[self setObjectValue: number];
}
- (void) setStringValue: (NSString*)aString
{
NSString *string = aString;
/* We warn about nil for compatibiliy with MacOS X, which refuses
nil. */
if (string == nil)
{
NSDebugMLLog (@"MacOSXCompatibility",
@"Attempt to use nil as string value");
}
_cell.type = NSTextCellType;
_cell.contents_is_attributed_string = NO;
if (_formatter == nil)
{
ASSIGN (_contents, string);
_cell.has_valid_object_value = NO;
}
else
{
id newObjectValue;
if ([_formatter getObjectValue: &newObjectValue
forString: string
errorDescription: NULL] == YES)
{
[self setObjectValue: newObjectValue];
}
else
{
_cell.has_valid_object_value = NO;
ASSIGN (_contents, string);
}
}
}
/*
* Setting Parameters
*/
- (int) cellAttribute: (NSCellAttribute)aParameter
{
switch (aParameter)
{
case NSCellDisabled: return _cell.is_disabled;
case NSCellState: return _cell.state;
case NSCellEditable: return _cell.is_editable;
case NSCellHighlighted: return _cell.is_highlighted;
case NSCellIsBordered: return _cell.is_bordered;
case NSCellAllowsMixedState: return _cell.allows_mixed_state;
/*
case NSPushInCell: return 0;
case NSChangeGrayCell: return 0;
case NSCellLightsByContents: return 0;
case NSCellLightsByGray: return 0;
case NSChangeBackgroundCell: return 0;
case NSCellLightsByBackground: return 0;
case NSCellChangesContents: return 0;
case NSCellIsInsetButton: return 0;
*/
case NSCellHasOverlappingImage:
{
return _cell.image_position == NSImageOverlaps;
}
case NSCellHasImageHorizontal:
{
return (_cell.image_position == NSImageRight)
|| (_cell.image_position == NSImageLeft);
}
case NSCellHasImageOnLeftOrBottom:
{
return (_cell.image_position == NSImageBelow)
|| (_cell.image_position == NSImageLeft);
}
default:
{
NSDebugLog (@"cell attribute %d not supported", aParameter);
break;
}
}
return 0;
}
- (void) setCellAttribute: (NSCellAttribute)aParameter to: (int)value
{
switch (aParameter)
{
case NSCellDisabled:
{
_cell.is_disabled = value;
break;
}
case NSCellState:
{
_cell.state = value;
break;
}
case NSCellEditable:
{
_cell.is_editable = value;
break;
}
case NSCellHighlighted:
{
_cell.is_highlighted = value;
break;
}
case NSCellHasOverlappingImage:
{
if (value)
{
_cell.image_position = NSImageOverlaps;
}
else
{
if (_cell.image_position == NSImageOverlaps)
{
_cell.image_position = NSImageLeft;
}
}
break;
}
case NSCellHasImageHorizontal:
{
if (value)
{
if (_cell.image_position != NSImageLeft
&& _cell.image_position != NSImageRight)
{
_cell.image_position = NSImageLeft;
}
}
else
{
if (_cell.image_position == NSImageLeft)
{
_cell.image_position = NSImageAbove;
}
else if (_cell.image_position == NSImageRight)
{
_cell.image_position = NSImageBelow;
}
}
break;
}
case NSCellHasImageOnLeftOrBottom:
{
if (value)
{
if (_cell.image_position == NSImageAbove)
{
_cell.image_position = NSImageBelow;
}
else
{
_cell.image_position = NSImageLeft;
}
}
else
{
if (_cell.image_position == NSImageBelow)
{
_cell.image_position = NSImageAbove;
}
else
{
_cell.image_position = NSImageRight;
}
}
break;
}
/*
case NSCellChangesContents:
_cell. = value;
break;
case NSCellIsInsetButton:
_cell. = value;
break;
*/
case NSCellIsBordered:
{
_cell.is_bordered = value;
break;
}
case NSCellAllowsMixedState:
{
_cell.allows_mixed_state = value;
break;
}
default:
{
NSDebugLog (@"cell attribute %d not supported", aParameter);
break;
}
}
}
/*
* Setting the NSCell's Type
*/
- (void) setType: (NSCellType)aType
{
if (_cell.type == aType)
{
return;
}
_cell.type = aType;
switch (_cell.type)
{
case NSTextCellType:
{
ASSIGN (_contents, @"title");
_cell.contents_is_attributed_string = NO;
/* Doc says we have to reset the font too. */
ASSIGN (_font, [fontClass userFontOfSize: 0]);
break;
}
case NSImageCellType:
{
TEST_RELEASE (_cell_image);
_cell_image = nil;
break;
}
}
}
- (NSCellType) type
{
return _cell.type;
}
/*
* Enabling and Disabling the NSCell
*/
- (BOOL) isEnabled
{
return !_cell.is_disabled;
}
- (void) setEnabled: (BOOL)flag
{
_cell.is_disabled = !flag;
}
/*
* Modifying Graphic Attributes
*/
- (BOOL) isBezeled
{
return _cell.is_bezeled;
}
- (BOOL) isBordered
{
return _cell.is_bordered;
}
- (BOOL) isOpaque
{
return NO;
}
- (void) setBezeled: (BOOL)flag
{
_cell.is_bezeled = flag;
if (_cell.is_bezeled)
{
_cell.is_bordered = NO;
}
}
- (void) setBordered: (BOOL)flag
{
_cell.is_bordered = flag;
if (_cell.is_bordered)
{
_cell.is_bezeled = NO;
}
}
/*
* Setting the NSCell's State
*/
- (void) setState: (int)value
{
/* We do exactly as in macosx when value is not NSOnState,
* NSOffState, NSMixedState, even if their behaviour (value < 0 ==>
* NSMixedState) is a bit strange. We could decide to do
* differently in the future, so please use always symbolic
* constants when calling this method, this way your code won't be
* broken by changes. */
if (value > 0 || (value < 0 && _cell.allows_mixed_state == NO))
{
_cell.state = NSOnState;
}
else if (value == 0)
{
_cell.state = NSOffState;
}
else
{
_cell.state = NSMixedState;
}
}
- (int) state
{
return _cell.state;
}
- (BOOL) allowsMixedState
{
return _cell.allows_mixed_state;
}
- (void) setAllowsMixedState: (BOOL)flag
{
_cell.allows_mixed_state = flag;
if (!flag && _cell.state == NSMixedState)
{
[self setNextState];
}
}
- (int) nextState
{
switch (_cell.state)
{
case NSOnState:
{
return NSOffState;
}
case NSOffState:
{
if (_cell.allows_mixed_state)
{
return NSMixedState;
}
else
{
return NSOnState;
}
}
case NSMixedState:
default:
{
return NSOnState;
}
}
}
- (void) setNextState
{
[self setState: [self nextState]];
}
/*
* Modifying Text Attributes
*/
- (NSTextAlignment) alignment
{
return _cell.text_align;
}
- (NSFont*) font
{
return _font;
}
- (BOOL) isEditable
{
return _cell.is_editable;
}
- (BOOL) isSelectable
{
return _cell.is_selectable || _cell.is_editable;
}
- (BOOL) isScrollable
{
return _cell.is_scrollable;
}
- (void) setAlignment: (NSTextAlignment)mode
{
_cell.text_align = mode;
}
- (void) setEditable: (BOOL)flag
{
/*
* The cell_editable flag is also checked to see if the cell is
* selectable so turning edit on also turns selectability on (until
* edit is turned off again).
*/
_cell.is_editable = flag;
}
- (void) setFont: (NSFont*)fontObject
{
ASSIGN (_font, fontObject);
}
- (void) setSelectable: (BOOL)flag
{
_cell.is_selectable = flag;
/*
* Making a cell unselectable also makes it uneditable until a
* setEditable re-enables it.
*/
if (!flag)
_cell.is_editable = NO;
}
- (void) setScrollable: (BOOL)flag
{
_cell.is_scrollable = flag;
}
- (void) setWraps: (BOOL)flag
{
_cell.wraps = flag;
if (flag)
{
_cell.is_scrollable = NO;
}
}
- (BOOL) wraps
{
return _cell.wraps;
}
- (void) setAttributedStringValue: (NSAttributedString*)attribStr
{
/* Hmm. FIXME. Not sure what to do here. */
if (_formatter != nil)
{
id newObjectValue;
if ([_formatter getObjectValue: &newObjectValue
forString: [attribStr string]
errorDescription: NULL] == YES)
{
[self setObjectValue: newObjectValue];
/* What about the attributed string ? We are loosing it. */
return;
}
}
/* In all other cases */
ASSIGN (_contents, attribStr);
_cell.has_valid_object_value = NO;
_cell.contents_is_attributed_string = YES;
}
- (NSAttributedString*) attributedStringValue
{
if (_formatter != nil)
{
NSDictionary *attributes;
NSAttributedString *attrStr;
attributes = AUTORELEASE ([self _nonAutoreleasedTypingAttributes]);
attrStr = [_formatter attributedStringForObjectValue: _objectValue
withDefaultAttributes: attributes];
if (attrStr != nil)
{
return attrStr;
}
}
/* In all other cases */
if (_cell.contents_is_attributed_string)
{
return (NSAttributedString *)_contents;
}
else
{
NSDictionary *dict;
NSAttributedString *attrStr;
dict = AUTORELEASE ([self _nonAutoreleasedTypingAttributes]);
attrStr = [[NSAttributedString alloc] initWithString: _contents
attributes: dict];
return AUTORELEASE (attrStr);
}
}
- (void) setAllowsEditingTextAttributes: (BOOL)flag
{
_cell.is_rich_text = flag;
if (!flag)
_cell.imports_graphics = NO;
}
- (BOOL) allowsEditingTextAttributes
{
return _cell.is_rich_text;
}
- (void) setImportsGraphics: (BOOL)flag
{
_cell.imports_graphics = flag;
if (flag)
_cell.is_rich_text = YES;
}
- (BOOL) importsGraphics
{
return _cell.imports_graphics;
}
- (NSText*) setUpFieldEditorAttributes: (NSText*)textObject
{
[textObject setTextColor: [self textColor]];
if (_cell.contents_is_attributed_string == NO)
{
/* TODO: Manage scrollable attribute */
[textObject setFont: _font];
[textObject setAlignment: _cell.text_align];
}
else
{
/* FIXME/TODO. What do we do if we are an attributed string.
Think about what happens when the user ends editing.
Allows editing text attributes... Formatter... TODO. */
}
[textObject setEditable: _cell.is_editable];
[textObject setSelectable: _cell.is_selectable || _cell.is_editable];
[textObject setRichText: _cell.is_rich_text];
[textObject setImportsGraphics: _cell.imports_graphics];
[textObject setSelectedRange: NSMakeRange(0, 0)];
return textObject;
}
/*
* Target and Action
*/
- (SEL) action
{
return NULL;
}
- (void) setAction: (SEL)aSelector
{
[NSException raise: NSInternalInconsistencyException
format: @"attempt to set an action in an NSCell"];
}
- (void) setTarget: (id)anObject
{
[NSException raise: NSInternalInconsistencyException
format: @"attempt to set a target in an NSCell"];
}
- (id) target
{
return nil;
}
- (BOOL) isContinuous
{
return _cell.is_continuous;
}
- (void) setContinuous: (BOOL)flag
{
_cell.is_continuous = flag;
[self sendActionOn: (NSLeftMouseUpMask|NSPeriodicMask)];
}
- (int) sendActionOn: (int)mask
{
unsigned int previousMask = _action_mask;
_action_mask = mask;
return previousMask;
}
/*
* Setting the Image
*/
- (NSImage*) image
{
if (_cell.type == NSImageCellType)
{
return _cell_image;
}
else
return nil;
}
- (void) setImage: (NSImage*)anImage
{
if (anImage)
{
NSAssert ([anImage isKindOfClass: imageClass],
NSInvalidArgumentException);
}
_cell.type = NSImageCellType;
ASSIGN (_cell_image, anImage);
}
/*
* Assigning a Tag
*/
- (void) setTag: (int)anInt
{
[NSException raise: NSInternalInconsistencyException
format: @"attempt to set a tag in an NSCell"];
}
- (int) tag
{
return -1;
}
/*
* Formatting Data
*/
- (void) setFloatingPointFormat: (BOOL)autoRange
left: (unsigned int)leftDigits
right: (unsigned int)rightDigits
{
// TODO: Pass this on to the formatter to handle
}
- (void) setFormatter: (NSFormatter*)newFormatter
{
ASSIGN (_formatter, newFormatter);
}
- (id) formatter
{
return _formatter;
}
- (int) entryType
{
return _cell.entry_type;
}
- (void) setEntryType: (int)aType
{
[self setType: NSTextCellType];
// TODO: This should select a suitable formatter
_cell.entry_type = aType;
}
- (BOOL) isEntryAcceptable: (NSString*)aString
{
if (_formatter != nil)
{
id newObjectValue;
return [_formatter getObjectValue: &newObjectValue
forString: aString
errorDescription: NULL];
}
else
{
return YES;
}
}
/*
* Menu
*/
- (void) setMenu: (NSMenu*)aMenu
{
ASSIGN (_menu, aMenu);
}
- (NSMenu*) menu
{
return _menu;
}
- (NSMenu*) menuForEvent: (NSEvent*)anEvent
inRect: (NSRect)cellFrame
ofView: (NSView*)aView
{
return [self menu];
}
/*
* Comparing to Another NSCell
*/
- (NSComparisonResult) compare: (id)otherCell
{
if ([otherCell isKindOfClass: cellClass] == NO)
{
[NSException raise: NSBadComparisonException
format: @"NSCell comparison with non-NSCell"];
}
if (_cell.type != NSTextCellType
|| ((NSCell*)otherCell)->_cell.type != NSTextCellType)
{
[NSException raise: NSBadComparisonException
format: @"Comparison between non-text cells"];
}
return [_contents compare: ((NSCell*)otherCell)->_contents];
}
/*
* respond to keyboard
*/
- (BOOL) acceptsFirstResponder
{
return _cell.is_disabled == NO && _cell.refuses_first_responder == NO;
}
- (void) setShowsFirstResponder: (BOOL)flag
{
_cell.shows_first_responder = flag;
}
- (BOOL) showsFirstResponder
{
return _cell.shows_first_responder;
}
- (void) setTitleWithMnemonic: (NSString*)aString
{
unsigned int location = [aString rangeOfString: @"&"].location;
[self setStringValue: [aString stringByReplacingString: @"&"
withString: @""]];
// TODO: We should underline this character
[self setMnemonicLocation: location];
}
- (NSString*) mnemonic
{
unsigned int location = [self mnemonicLocation];
NSString *c;
if (_cell.contents_is_attributed_string)
{
c = AUTORELEASE ([[(NSAttributedString *)_contents string] copy]);
}
else
{
c = _contents;
}
if ((location == NSNotFound) || location >= [c length])
return @"";
return [c substringWithRange: NSMakeRange (location, 1)];
}
- (void) setMnemonicLocation: (unsigned int)location
{
_mnemonic_location = location;
}
- (unsigned int) mnemonicLocation
{
return _mnemonic_location;
}
/* Apple Compatibility method - do not use - please test whether the
cell is enabled or disabled instead. */
- (BOOL) refusesFirstResponder
{
return _cell.refuses_first_responder;
}
/* Apple Compatibility method - do not use - please disable the cell
instead. */
- (void) setRefusesFirstResponder: (BOOL)flag
{
_cell.refuses_first_responder = flag;
}
- (void) performClick: (id)sender
{
SEL action = [self action];
NSView *cv = [self controlView];
if(_cell.is_disabled == YES)
{
return;
}
if (cv != nil)
{
NSRect cvBounds = [cv bounds];
NSWindow *cvWin = [cv window];
[self setNextState];
[self highlight: YES withFrame: cvBounds inView: cv];
[cvWin flushWindow];
// Wait approx 1/10 seconds
[[NSRunLoop currentRunLoop]
runUntilDate: [NSDate dateWithTimeIntervalSinceNow: 0.1]];
[self highlight: NO withFrame: cvBounds inView: cv];
[cvWin flushWindow];
if (action)
{
NS_DURING
{
[(NSControl*)cv sendAction: action to: [self target]];
}
NS_HANDLER
{
[localException raise];
}
NS_ENDHANDLER
}
}
else // We have no control view. The best we can do is the following.
{
if (action)
{
[self setNextState];
NS_DURING
{
[[NSApplication sharedApplication] sendAction: action
to: [self target]
from: self];
}
NS_HANDLER
{
[localException raise];
}
NS_ENDHANDLER
}
}
}
/*
* Deriving values from other objects (not necessarily cells)
*/
- (void) takeObjectValueFrom: (id)sender
{
[self setObjectValue: [sender objectValue]];
}
- (void) takeDoubleValueFrom: (id)sender
{
[self setDoubleValue: [sender doubleValue]];
}
- (void) takeFloatValueFrom: (id)sender
{
[self setFloatValue: [sender floatValue]];
}
- (void) takeIntValueFrom: (id)sender
{
[self setIntValue: [sender intValue]];
}
- (void) takeStringValueFrom: (id)sender
{
[self setStringValue: [sender stringValue]];
}
/*
* Using the NSCell to Represent an Object
*/
- (id) representedObject
{
return _represented_object;
}
- (void) setRepresentedObject: (id)anObject
{
/* Ahm - not nice - the RETAIN here could cause retain cycles - anyway. */
ASSIGN (_represented_object, anObject);
}
/*
* Tracking the Mouse
*/
- (BOOL) continueTracking: (NSPoint)lastPoint
at: (NSPoint)currentPoint
inView: (NSView*)controlView
{
return YES;
}
- (int) mouseDownFlags
{
return _mouse_down_flags;
}
- (void) getPeriodicDelay: (float*)delay interval: (float*)interval
{
*delay = 0.1;
*interval = 0.1;
}
- (BOOL) startTrackingAt: (NSPoint)startPoint inView: (NSView*)controlView
{
// If the point is in the view then yes start tracking
if ([controlView mouse: startPoint inRect: [controlView bounds]])
return YES;
else
return NO;
}
- (void) stopTracking: (NSPoint)lastPoint
at: (NSPoint)stopPoint
inView: (NSView*)controlView
mouseIsUp: (BOOL)flag
{
}
- (BOOL) trackMouse: (NSEvent*)theEvent
inRect: (NSRect)cellFrame
ofView: (NSView*)controlView
untilMouseUp: (BOOL)flag
{
NSApplication *theApp = [NSApplication sharedApplication];
unsigned event_mask = NSLeftMouseDownMask | NSLeftMouseUpMask
| NSMouseMovedMask | NSLeftMouseDraggedMask | NSMiddleMouseDraggedMask
| NSRightMouseDraggedMask;
NSPoint location = [theEvent locationInWindow];
NSPoint point = [controlView convertPoint: location fromView: nil];
float delay;
float interval;
id target = [self target];
SEL action = [self action];
NSPoint last_point = point;
BOOL done;
BOOL mouseWentUp;
NSDebugLog(@"NSCell start tracking\n");
NSDebugLog(@"NSCell tracking in rect %f %f %f %f\n",
cellFrame.origin.x, cellFrame.origin.y,
cellFrame.size.width, cellFrame.size.height);
NSDebugLog(@"NSCell initial point %f %f\n", point.x, point.y);
_mouse_down_flags = [theEvent modifierFlags];
if (![self startTrackingAt: point inView: controlView])
return NO;
if (![controlView mouse: point inRect: cellFrame])
return NO; // point is not in cell
if ((_action_mask & NSLeftMouseDownMask)
&& [theEvent type] == NSLeftMouseDown)
[(NSControl*)controlView sendAction: action to: target];
if (_cell.is_continuous)
{
[self getPeriodicDelay: &delay interval: &interval];
[NSEvent startPeriodicEventsAfterDelay: delay withPeriod: interval];
event_mask |= NSPeriodicMask;
}
NSDebugLog(@"NSCell get mouse events\n");
mouseWentUp = NO;
done = NO;
while (!done)
{
NSEventType eventType;
BOOL pointIsInCell;
unsigned periodCount = 0;
theEvent = [theApp nextEventMatchingMask: event_mask
untilDate: nil
inMode: NSEventTrackingRunLoopMode
dequeue: YES];
eventType = [theEvent type];
if (eventType != NSPeriodic || periodCount == 4)
{
last_point = point;
if (eventType == NSPeriodic)
{
NSWindow *w = [controlView window];
/*
* Too many periodic events in succession -
* update the mouse location and reset the counter.
*/
location = [w mouseLocationOutsideOfEventStream];
periodCount = 0;
}
else
{
location = [theEvent locationInWindow];
}
point = [controlView convertPoint: location fromView: nil];
NSDebugLog(@"NSCell location %f %f\n", location.x, location.y);
NSDebugLog(@"NSCell point %f %f\n", point.x, point.y);
}
else
{
periodCount++;
NSDebugLog (@"got a periodic event");
}
if (![controlView mouse: point inRect: cellFrame])
{
NSDebugLog(@"NSCell point not in cell frame\n");
pointIsInCell = NO;
if (flag == NO)
{
NSDebugLog(@"NSCell return immediately\n");
done = YES;
}
}
else
{
pointIsInCell = YES;
}
if (!done && ![self continueTracking: last_point // should continue
at: point // tracking?
inView: controlView])
{
NSDebugLog(@"NSCell stop tracking\n");
done = YES;
}
// Did the mouse go up?
if (eventType == NSLeftMouseUp)
{
NSDebugLog(@"NSCell mouse went up\n");
mouseWentUp = YES;
done = YES;
}
else
{
if (pointIsInCell && ((eventType == NSLeftMouseDragged
&& (_action_mask & NSLeftMouseDraggedMask))
|| ((eventType == NSPeriodic)
&& (_action_mask & NSPeriodicMask))))
[(NSControl*)controlView sendAction: action to: target];
}
}
// Hook called when stop tracking
[self stopTracking: last_point
at: point
inView: controlView
mouseIsUp: mouseWentUp];
if (_cell.is_continuous)
[NSEvent stopPeriodicEvents];
if (mouseWentUp)
{
[self setNextState];
if ((_action_mask & NSLeftMouseUpMask))
[(NSControl*)controlView sendAction: action to: target];
}
// Return YES only if the mouse went up within the cell
if (mouseWentUp && (flag || [controlView mouse: point inRect: cellFrame]))
{
NSDebugLog(@"NSCell mouse went up in cell\n");
return YES;
}
NSDebugLog(@"NSCell mouse did not go up in cell\n");
return NO; // Otherwise return NO
}
/*
* Managing the Cursor
*/
- (void) resetCursorRect: (NSRect)cellFrame inView: (NSView*)controlView
{
if (_cell.type == NSTextCellType && _cell.is_disabled == NO
&& (_cell.is_selectable == YES || _cell.is_editable == YES))
{
static NSCursor *c = nil;
NSRect r;
if (c == nil)
{
c = RETAIN([NSCursor IBeamCursor]);
}
r = NSIntersectionRect(cellFrame, [controlView visibleRect]);
/*
* Here we depend on an undocumented feature of NSCursor which may or
* may not exist in OPENSTEP or MacOS-X ...
* If we add a cursor rect to a view and don't set it to be set on
* either entry to or exit from the view, we push it on entry and
* pop it from the cursor stack on exit.
*/
[controlView addCursorRect: r cursor: c];
}
}
/*
* Handling Keyboard Alternatives
*/
- (NSString*) keyEquivalent
{
return @"";
}
/*
* Determining Component Sizes
*/
- (void) calcDrawInfo: (NSRect)aRect
{
}
- (NSSize) cellSize
{
NSSize borderSize, s;
// Get border size
if (_cell.is_bordered)
borderSize = _sizeForBorderType (NSLineBorder);
else if (_cell.is_bezeled)
borderSize = _sizeForBorderType (NSBezelBorder);
else
borderSize = NSZeroSize;
// Add spacing between border and inside
if (_cell.is_bordered || _cell.is_bezeled)
{
borderSize.height += 1;
borderSize.width += 3;
}
// Get Content Size
switch (_cell.type)
{
case NSTextCellType:
{
if (_cell.contents_is_attributed_string)
{
s = [(NSAttributedString *)_contents size];
}
else
{
if ((_contents != nil)
&& ([_contents isEqualToString: @""] == NO))
{
s = [self _sizeText: _contents];
}
else
{
s = [self _sizeText: @"A"];
}
}
}
break;
case NSImageCellType:
if (_cell_image == nil)
{
s = NSZeroSize;
}
else
{
s = [_cell_image size];
}
break;
case NSNullCellType:
// macosx instead returns a 'very big size' here; we return NSZeroSize
s = NSZeroSize;
break;
}
// Add in border size
s.width += 2 * borderSize.width;
s.height += 2 * borderSize.height;
return s;
}
- (NSSize) cellSizeForBounds: (NSRect)aRect
{
if (_cell.type == NSTextCellType)
{
// TODO: Resize the text to fit
}
return [self cellSize];
}
- (NSRect) drawingRectForBounds: (NSRect)theRect
{
NSSize borderSize;
// Get border size
if (_cell.is_bordered)
borderSize = _sizeForBorderType (NSLineBorder);
else if (_cell.is_bezeled)
borderSize = _sizeForBorderType (NSBezelBorder);
else
borderSize = NSZeroSize;
return NSInsetRect(theRect, borderSize.width, borderSize.height);
}
- (NSRect) imageRectForBounds: (NSRect)theRect
{
return [self drawingRectForBounds: theRect];
}
- (NSRect) titleRectForBounds: (NSRect)theRect
{
if (_cell.type == NSTextCellType)
{
NSRect frame = [self drawingRectForBounds: theRect];
// Add spacing between border and inside
if (_cell.is_bordered || _cell.is_bezeled)
{
frame.origin.x += 3;
frame.size.width -= 6;
frame.origin.y += 1;
frame.size.height -= 2;
}
return frame;
}
else
{
return theRect;
}
}
/*
* Displaying
*/
- (NSView*) controlView
{
return nil;
}
/*
* This drawing is minimal and with no background,
* to make it easier for subclass to customize drawing.
*/
- (void) drawInteriorWithFrame: (NSRect)cellFrame inView: (NSView*)controlView
{
if (![controlView window])
return;
cellFrame = [self drawingRectForBounds: cellFrame];
//FIXME: Check if this is also neccessary for images,
// Add spacing between border and inside
if (_cell.is_bordered || _cell.is_bezeled)
{
cellFrame.origin.x += 3;
cellFrame.size.width -= 6;
cellFrame.origin.y += 1;
cellFrame.size.height -= 2;
}
[controlView lockFocus];
switch (_cell.type)
{
case NSTextCellType:
if (_cell.contents_is_attributed_string)
{
[self _drawAttributedText: (NSAttributedString *)_contents
inFrame: cellFrame];
}
else
{
[self _drawText: _contents inFrame: cellFrame];
}
break;
case NSImageCellType:
if (_cell_image)
{
NSSize size;
NSPoint position;
size = [_cell_image size];
position.x = MAX(NSMidX(cellFrame) - (size.width/2.),0.);
position.y = MAX(NSMidY(cellFrame) - (size.height/2.),0.);
/*
* Images are always drawn with their bottom-left corner
* at the origin so we must adjust the position to take
* account of a flipped view.
*/
if ([controlView isFlipped])
position.y += size.height;
[_cell_image compositeToPoint: position operation: NSCompositeSourceOver];
}
break;
case NSNullCellType:
break;
}
if (_cell.shows_first_responder)
NSDottedFrameRect(cellFrame);
// NB: We don't do any highlighting to make it easier for subclasses
// to reuse this code while doing their own custom highlighting and
// prettyfying
[controlView unlockFocus];
}
- (void) drawWithFrame: (NSRect)cellFrame inView: (NSView*)controlView
{
NSDebugLog (@"NSCell drawWithFrame: inView: ");
// do nothing if cell's frame rect is zero
if (NSIsEmptyRect(cellFrame) || ![controlView window])
return;
// draw the border if needed
if (_cell.is_bordered)
{
[controlView lockFocus];
[shadowCol set];
NSFrameRect(cellFrame);
[controlView unlockFocus];
}
else if (_cell.is_bezeled)
{
[controlView lockFocus];
NSDrawWhiteBezel(cellFrame, NSZeroRect);
[controlView unlockFocus];
}
[self drawInteriorWithFrame: cellFrame inView: controlView];
}
- (void) setHighlighted: (BOOL) flag
{
_cell.is_highlighted = flag;
}
- (BOOL) isHighlighted
{
return _cell.is_highlighted;
}
- (void) highlight: (BOOL)lit
withFrame: (NSRect)cellFrame
inView: (NSView*)controlView
{
if (_cell.is_highlighted != lit)
{
_cell.is_highlighted = lit;
/*
* NB: This has a visible effect only if subclasses override
* drawWithFrame:inView: to draw something special when the
* cell is highlighted.
* NSCell simply draws border+text/image and makes no highlighting,
* for easier subclassing.
*/
[self drawWithFrame: cellFrame inView: controlView];
}
}
/*
* Editing Text
*/
- (void) editWithFrame: (NSRect)aRect
inView: (NSView*)controlView
editor: (NSText*)textObject
delegate: (id)anObject
event: (NSEvent*)theEvent
{
if (!controlView || !textObject || (_cell.type != NSTextCellType))
return;
[textObject setFrame: [self titleRectForBounds: aRect]];
[controlView addSubview: textObject];
if (_formatter != nil)
{
NSString *contents;
contents = [_formatter editingStringForObjectValue: _objectValue];
if (contents == nil)
{
contents = _contents;
}
[textObject setText: contents];
}
else
{
if (_cell.contents_is_attributed_string == NO)
{
[textObject setText: _contents];
}
else
{
/* FIXME/TODO make sure this is correct. */
[textObject setText: [(NSAttributedString *)_contents string]];
}
}
[textObject setDelegate: anObject];
[[controlView window] makeFirstResponder: textObject];
if ([theEvent type] == NSLeftMouseDown)
{
[textObject mouseDown: theEvent];
}
[textObject display];
}
- (void) endEditing: (NSText*)textObject
{
[textObject setDelegate: nil];
[textObject removeFromSuperview];
}
- (void) selectWithFrame: (NSRect)aRect
inView: (NSView*)controlView
editor: (NSText*)textObject
delegate: (id)anObject
start: (int)selStart
length: (int)selLength
{
if (!controlView || !textObject || (_cell.type != NSTextCellType))
return;
[textObject setFrame: [self titleRectForBounds: aRect]];
[controlView addSubview: textObject];
if (_cell.contents_is_attributed_string == NO)
{
[textObject setText: _contents];
}
else
{
/* FIXME/TODO make sure this is correct. */
[textObject setText: [(NSAttributedString *)_contents string]];
}
[textObject setSelectedRange: NSMakeRange (selStart, selLength)];
[textObject setDelegate: anObject];
[[controlView window] makeFirstResponder: textObject];
[textObject display];
}
- (BOOL) sendsActionOnEndEditing
{
return _cell.sends_action_on_end_editing;
}
- (void) setSendsActionOnEndEditing: (BOOL)flag
{
_cell.sends_action_on_end_editing = flag;
}
/*
* Copying
*/
- (id) copyWithZone: (NSZone*)zone
{
NSCell *c = (NSCell*)NSCopyObject (self, 0, zone);
/* Hmmm. */
c->_contents = [_contents copyWithZone: zone];
/* Because of performance issues (and because so the doc says) only
pointers to the objects are copied. We need to RETAIN them all
though. */
TEST_RETAIN (_font);
TEST_RETAIN (_objectValue);
TEST_RETAIN (_menu);
TEST_RETAIN (_cell_image);
TEST_RETAIN (_formatter);
TEST_RETAIN (_represented_object);
return c;
}
/*
* NSCoding protocol
*/
- (void) encodeWithCoder: (NSCoder*)aCoder
{
BOOL flag;
unsigned int tmp_int;
[aCoder encodeObject: _contents];
[aCoder encodeObject: _cell_image];
[aCoder encodeObject: _font];
[aCoder encodeObject: _objectValue];
flag = _cell.contents_is_attributed_string;
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag];
flag = _cell.is_highlighted;
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag];
flag = _cell.is_disabled;
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag];
flag = _cell.is_editable;
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag];
flag = _cell.is_rich_text;
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag];
flag = _cell.imports_graphics;
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag];
flag = _cell.shows_first_responder;
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag];
flag = _cell.refuses_first_responder;
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag];
flag = _cell.sends_action_on_end_editing;
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag];
flag = _cell.is_bordered;
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag];
flag = _cell.is_bezeled;
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag];
flag = _cell.is_scrollable;
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag];
flag = _cell.is_selectable;
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag];
flag = _cell.is_continuous;
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag];
flag = _cell.allows_mixed_state;
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag];
flag = _cell.wraps;
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &flag];
tmp_int = _cell.text_align;
[aCoder encodeValueOfObjCType: @encode(unsigned int) at: &tmp_int];
tmp_int = _cell.type;
[aCoder encodeValueOfObjCType: @encode(unsigned int) at: &tmp_int];
tmp_int = _cell.image_position;
[aCoder encodeValueOfObjCType: @encode(unsigned int) at: &tmp_int];
tmp_int = _cell.entry_type;
[aCoder encodeValueOfObjCType: @encode(unsigned int) at: &tmp_int];
tmp_int = _cell.state;
[aCoder encodeValueOfObjCType: @encode(unsigned int) at: &tmp_int];
[aCoder encodeValueOfObjCType: @encode(unsigned int) at: &_mnemonic_location];
[aCoder encodeValueOfObjCType: @encode(unsigned int) at: &_mouse_down_flags];
[aCoder encodeValueOfObjCType: @encode(unsigned int) at: &_action_mask];
[aCoder encodeValueOfObjCType: @encode(id) at: &_formatter];
[aCoder encodeValueOfObjCType: @encode(id) at: &_menu];
[aCoder encodeValueOfObjCType: @encode(id) at: &_represented_object];
}
- (id) initWithCoder: (NSCoder*)aDecoder
{
BOOL flag;
unsigned int tmp_int;
[aDecoder decodeValueOfObjCType: @encode(id) at: &_contents];
[aDecoder decodeValueOfObjCType: @encode(id) at: &_cell_image];
[aDecoder decodeValueOfObjCType: @encode(id) at: &_font];
[aDecoder decodeValueOfObjCType: @encode(id) at: &_objectValue];
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag];
_cell.contents_is_attributed_string = flag;
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag];
_cell.is_highlighted = flag;
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag];
_cell.is_disabled = flag;
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag];
_cell.is_editable = flag;
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag];
_cell.is_rich_text = flag;
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag];
_cell.imports_graphics = flag;
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag];
_cell.shows_first_responder = flag;
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag];
_cell.refuses_first_responder = flag;
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag];
_cell.sends_action_on_end_editing = flag;
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag];
_cell.is_bordered = flag;
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag];
_cell.is_bezeled = flag;
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag];
_cell.is_scrollable = flag;
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag];
_cell.is_selectable = flag;
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag];
_cell.is_continuous = flag;
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag];
_cell.allows_mixed_state = flag;
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &flag];
_cell.wraps = flag;
[aDecoder decodeValueOfObjCType: @encode(unsigned int) at: &tmp_int];
_cell.text_align = tmp_int;
[aDecoder decodeValueOfObjCType: @encode(unsigned int) at: &tmp_int];
_cell.type = tmp_int;
[aDecoder decodeValueOfObjCType: @encode(unsigned int) at: &tmp_int];
_cell.image_position = tmp_int;
[aDecoder decodeValueOfObjCType: @encode(unsigned int) at: &tmp_int];
_cell.entry_type = tmp_int;
[aDecoder decodeValueOfObjCType: @encode(unsigned int) at: &tmp_int];
_cell.state = tmp_int;
[aDecoder decodeValueOfObjCType: @encode(unsigned int)
at: &_mnemonic_location];
[aDecoder decodeValueOfObjCType: @encode(unsigned int)
at: &_mouse_down_flags];
[aDecoder decodeValueOfObjCType: @encode(unsigned int) at: &_action_mask];
[aDecoder decodeValueOfObjCType: @encode(id) at: &_formatter];
[aDecoder decodeValueOfObjCType: @encode(id) at: &_menu];
[aDecoder decodeValueOfObjCType: @encode(id) at: &_represented_object];
if (_formatter != nil)
{
NSString *contents;
contents = [_formatter stringForObjectValue: _objectValue];
if (contents != nil)
{
_cell.has_valid_object_value = YES;
ASSIGN (_contents, contents);
_cell.contents_is_attributed_string = NO;
}
}
return self;
}
@end
@implementation NSCell (PrivateMethods)
- (NSColor*) textColor
{
if (_cell.is_disabled)
return dtxtCol;
else
return txtCol;
}
/* This method is an exception and returns a non-autoreleased
dictionary, so that calling methods can deallocate it immediately
using release. Otherwise if many cells are drawn/their size
computed, we pile up hundreds or thousands of these objects before they
are deallocated at the end of the run loop. */
- (NSDictionary*) _nonAutoreleasedTypingAttributes
{
NSDictionary *attr;
NSColor *color;
NSMutableParagraphStyle *paragraphStyle;
color = [self textColor];
/* Note: there are only 6 possible paragraph styles for cells.
TODO: Create them once at the beginning, and reuse them for the whole
app lifetime. */
paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
if (_cell.wraps)
{
[paragraphStyle setLineBreakMode: NSLineBreakByWordWrapping];
}
else
{
[paragraphStyle setLineBreakMode: NSLineBreakByClipping];
}
[paragraphStyle setAlignment: _cell.text_align];
attr = [[NSDictionary alloc] initWithObjectsAndKeys:
_font, NSFontAttributeName,
color, NSForegroundColorAttributeName,
paragraphStyle, NSParagraphStyleAttributeName,
nil];
RELEASE (paragraphStyle);
return attr;
}
- (NSSize) _sizeText: (NSString*)title
{
NSSize size;
NSDictionary *dict;
if (title == nil)
{
return NSMakeSize (0,0);
}
dict = [self _nonAutoreleasedTypingAttributes];
size = [title sizeWithAttributes: dict];
RELEASE (dict);
return size;
}
- (void) _drawAttributedText: (NSAttributedString *)title
inFrame: (NSRect)cellFrame
{
NSSize titleSize;
if (title == nil)
return;
titleSize = [title size];
// Determine y position of text
/* Important: text should always be vertically centered without
* considering descender [as if descender did not exist].
* This is particularly important for single line texts.
* Please make sure the output remains always correct.
*/
cellFrame.origin.y = NSMidY (cellFrame) - titleSize.height/2;
cellFrame.size.height = titleSize.height;
[title drawInRect: cellFrame];
}
- (void) _drawText: (NSString*)title inFrame: (NSRect)cellFrame
{
NSSize titleSize;
NSDictionary *attributes;
if (title == nil)
return;
attributes = [self _nonAutoreleasedTypingAttributes];
titleSize = [title sizeWithAttributes: attributes];
// Determine y position of text
/* Important: text should always be vertically centered without
* considering descender [as if descender did not exist].
* This is particularly important for single line texts.
* Please make sure the output remains always correct.
*/
cellFrame.origin.y = NSMidY (cellFrame) - titleSize.height/2;
cellFrame.size.height = titleSize.height;
[title drawInRect: cellFrame withAttributes: attributes];
RELEASE (attributes);
}
@end
/*
* Global function which should go somewhere else
*/
inline NSSize
_sizeForBorderType (NSBorderType aType)
{
// Returns the size of a border
switch (aType)
{
case NSLineBorder:
return NSMakeSize(1, 1);
case NSGrooveBorder:
case NSBezelBorder:
return NSMakeSize(2, 2);
case NSNoBorder:
default:
return NSZeroSize;
}
}
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