mirror of
https://github.com/gnustep/libs-gui.git
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6393cf81c4
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@4741 72102866-910b-0410-8b05-ffd578937521
1226 lines
30 KiB
Objective-C
1226 lines
30 KiB
Objective-C
/*
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NSLayoutManager.m
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The text layout manager class
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Copyright (C) 1999 Free Software Foundation, Inc.
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Author: Jonathan Gapen <jagapen@smithlab.chem.wisc.edu>
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Date: July 1999
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Author: Michael Hanni <mhanni@sprintmail.com>
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Date: August 1999
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This file is part of the GNUstep GUI Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; see the file COPYING.LIB.
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If not, write to the Free Software Foundation,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <AppKit/NSLayoutManager.h>
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// _GSRunSearchKey is an internal class which serves as the foundation for
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// all our searching. This may not be an elegant way to go about this, so
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// if someone wants to optimize this out, please do.
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@interface _GSRunSearchKey : NSObject
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{
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@public
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NSRange glyphRange;
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}
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@end
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@implementation _GSRunSearchKey
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- (id)init
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{
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return [super init];
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}
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- (void) dealloc
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{
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[super dealloc];
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}
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@end
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@interface GSGlyphLocation : _GSRunSearchKey
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{
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@public
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NSPoint point;
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}
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@end
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@implementation GSGlyphLocation
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- (id)init
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{
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return [super init];
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}
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- (void) dealloc
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{
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[super dealloc];
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}
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@end
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@interface GSLineLayoutInfo : _GSRunSearchKey
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{
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@public
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NSRect lineFragmentRect;
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NSRect usedRect;
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}
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@end
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@implementation GSLineLayoutInfo
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- (id)init
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{
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return [super init];
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}
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- (void) dealloc
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{
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[super dealloc];
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}
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@end
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@interface GSTextContainerLayoutInfo : _GSRunSearchKey
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{
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@public
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NSTextContainer *textContainer;
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NSString *testString;
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}
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@end
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@implementation GSTextContainerLayoutInfo
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- (id)init
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{
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return [super init];
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}
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- (void) dealloc
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{
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[super dealloc];
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}
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@end
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#define GSI_ARRAY_TYPES GSUNION_OBJ
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#ifdef GSIArray
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#undef GSIArray
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#endif
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#include <base/GSIArray.h>
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static NSComparisonResult aSort(GSIArrayItem i0, GSIArrayItem i1)
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{
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if (((_GSRunSearchKey *)(i0.obj))->glyphRange.location
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< ((_GSRunSearchKey *)(i1.obj))->glyphRange.location)
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return NSOrderedAscending;
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else if (((_GSRunSearchKey *)(i0.obj))->glyphRange.location
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>= NSMaxRange(((_GSRunSearchKey *)(i1.obj))->glyphRange))
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return NSOrderedDescending;
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else
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return NSOrderedSame;
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}
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@interface GSRunStorage : NSObject
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{
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unsigned int _count;
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void *_runs;
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}
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- (void)insertObject:(id)anObject;
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- (void)insertObject:(id)anObject atIndex:(unsigned)theIndex;
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- (id)objectAtIndex:(unsigned)theIndex;
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- (unsigned)indexOfObject:(id)anObject;
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- (unsigned)indexOfObjectContainingLocation:(unsigned)aLocation;
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- (id)objectContainingLocation:(unsigned)aLocation;
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- (int)count;
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@end
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@implementation GSRunStorage
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- (id)init
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{
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NSZone *z;
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[super init];
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z = [self zone];
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_runs = NSZoneMalloc(z, sizeof(GSIArray_t));
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GSIArrayInitWithZoneAndCapacity((GSIArray)_runs, z, 8);
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return self;
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}
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- (void)insertObject:(id)anObject
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{
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_GSRunSearchKey *aKey = [_GSRunSearchKey new];
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_GSRunSearchKey *aObject = (_GSRunSearchKey *)anObject;
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int position;
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aKey->glyphRange.location = aObject->glyphRange.location;
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position = GSIArrayInsertionPosition(_runs, (GSIArrayItem)aKey, aSort);
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NSLog(@"key: %d aObject: %d position: %d", aKey->glyphRange.location,
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aObject->glyphRange.location, position);
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if (position > 0)
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{
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_GSRunSearchKey *anKey = GSIArrayItemAtIndex(_runs, (unsigned)position - 1).obj;
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if (anKey->glyphRange.location == aObject->glyphRange.location)
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{
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// GSIArrayInsertSorted(_runs, (GSIArrayItem)anObject, aSort);
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NSLog(@"=========> duplicated item.");
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GSIArraySetItemAtIndex(_runs, (GSIArrayItem)anObject, position-1);
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}
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else
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{
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NSLog(@"=========> not duplicated item.");
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GSIArrayInsertItem(_runs, (GSIArrayItem)anObject, position);
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}
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}
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else if (position == 0)
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{
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NSLog(@"=========> first item (zero index).");
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GSIArrayInsertItem(_runs, (GSIArrayItem)anObject, position);
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// GSIArrayInsertSorted(_runs, (GSIArrayItem)anObject, aSort);
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// [self insertObject:anObject atIndex:position];
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}
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else
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NSLog(@"dead. VERY DEAD DEAD DEAD DEAD.");
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NSLog(@"==> %d item(s)", GSIArrayCount(_runs));
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}
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- (void)insertObject:(id)anObject
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atIndex:(unsigned)theIndex
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{
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NSLog(@"insertObject:atIndex: called. %d item(s)", GSIArrayCount(_runs));
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GSIArrayInsertSorted(_runs, (GSIArrayItem)anObject, aSort);
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// GSIArrayInsertItem(_runs, (GSIArrayItem)anObject, theIndex);
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NSLog(@"insertObject:atIndex: ended. %d item(s)", GSIArrayCount(_runs));
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}
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- (void)removeObjectAtIndex:(int)theIndex
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{
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GSIArrayRemoveItemAtIndex(_runs, theIndex);
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}
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- (id)objectAtIndex:(unsigned)theIndex
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{
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return GSIArrayItemAtIndex(_runs, (unsigned)theIndex).obj;
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}
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- (unsigned)indexOfObject:(id)anObject
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{
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return NSNotFound;
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}
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- (unsigned)indexOfObjectContainingLocation:(unsigned)aLocation
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{
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_GSRunSearchKey *aKey = [_GSRunSearchKey new];
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int position;
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aKey->glyphRange.location = aLocation;
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position = GSIArrayInsertionPosition(_runs, (GSIArrayItem)aKey, aSort);
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if (position >= 0 && position - 1 >= 0)
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{
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aKey = GSIArrayItemAtIndex(_runs, (unsigned)position - 1).obj;
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if (NSLocationInRange(aLocation, aKey->glyphRange))
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{
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return (position - 1);
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}
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}
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return -1;
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}
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- (id)objectContainingLocation:(unsigned)aLocation
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{
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_GSRunSearchKey *aKey = [_GSRunSearchKey new];
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int position;
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aKey->glyphRange.location = aLocation;
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position = GSIArrayInsertionPosition(_runs, (GSIArrayItem)aKey, aSort);
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if (position >= 0 && position - 1 >= 0)
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{
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aKey = GSIArrayItemAtIndex(_runs, (unsigned)position - 1).obj;
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if (NSLocationInRange(aLocation, aKey->glyphRange))
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{
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return aKey;
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}
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}
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return nil;
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}
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- (id)lastObject
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{
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return GSIArrayItemAtIndex(_runs, GSIArrayCount(_runs) - 1).obj;
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}
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- (int)count
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{
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return GSIArrayCount(_runs);
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}
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@end
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@implementation NSLayoutManager
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- (id) init
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{
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[super init];
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_backgroundLayout = YES;
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_delegate = nil;
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_textContainers = [[NSMutableArray alloc] initWithCapacity: 2];
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containerRuns = [GSRunStorage new];
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fragmentRuns = [GSRunStorage new];
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locationRuns = [GSRunStorage new];
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return self;
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}
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//
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// Setting the text storage
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//
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- (void)setTextStorage: (NSTextStorage *)aTextStorage
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{
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ASSIGN(_textStorage, aTextStorage);
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}
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- (NSTextStorage *)textStorage
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{
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return _textStorage;
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}
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- (void)replaceTextStorage: (NSTextStorage *)newTextStorage
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{
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NSArray *layoutManagers = [_textStorage layoutManagers];
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NSEnumerator *enumerator = [layoutManagers objectEnumerator];
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NSLayoutManager *object;
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// Remove layout managers from old NSTextStorage object and add them to the
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// new one. NSTextStorage's addLayoutManager invokes NSLayoutManager's
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// setTextStorage method automatically, and that includes self.
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while( (object = (NSLayoutManager *)[enumerator nextObject]) )
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{
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[_textStorage removeLayoutManager: object];
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[newTextStorage addLayoutManager: object];
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}
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}
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//
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// Setting text containers
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//
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- (NSArray *)textContainers
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{
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return _textContainers;
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}
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- (void)addTextContainer: (NSTextContainer *)obj
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{
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if( [_textContainers indexOfObjectIdenticalTo: obj] == NSNotFound )
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{
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[_textContainers addObject: obj];
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[obj setLayoutManager: self];
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}
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}
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- (void)insertTextContainer: (NSTextContainer *)aTextContainer
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atIndex: (unsigned)index
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{
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[_textContainers insertObject: aTextContainer atIndex: index];
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}
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- (void)removeTextContainerAtIndex: (unsigned)index
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{
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[_textContainers removeObjectAtIndex: index];
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}
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//
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// Invalidating glyphs and layout
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//
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- (void)invalidateGlyphsForCharacterRange: (NSRange)aRange
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changeInLength: (int)lengthChange
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actualCharacterRange: (NSRange *)actualRange
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{
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}
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- (void)invalidateLayoutForCharacterRange: (NSRange)aRange
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isSoft: (BOOL)flag
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actualCharacterRange: (NSRange *)actualRange
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{
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}
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- (void)invalidateDisplayForCharacterRange: (NSRange)aRange
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{
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}
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- (void)invalidateDisplayForGlyphRange: (NSRange)aRange
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{
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}
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- (void)textContainerChangedGeometry: (NSTextContainer *)aContainer
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{
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}
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- (void)textContainerChangedTextView: (NSTextContainer *)aContainer
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{
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}
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- (void)textStorage: (NSTextStorage *)aTextStorage
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edited: (unsigned)mask
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range: (NSRange)range
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changeInLength: (int)lengthChange
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invalidatedRange: (NSRange)invalidatedRange
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{
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NSLog(@"NSLayoutManager was just notified that a change in the text
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storage occured.");
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/*
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if (mask == NSTextStorageEditedCharacters)
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{
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aLayoutHole = [[NSLayoutHole alloc]
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initWithCharacterRange:invalidatedRange isSoft:NO];
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}
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else if (mask == NSTextStorageEditedAttributes)
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{
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}
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else if (mask == NSTextStorageEditedCharacters | NSTextStorageEditedAttributes)
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{
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}
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*/
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// invalidation should occure here.
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[self _doLayout];
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}
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//
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// Turning on/off background layout
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//
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- (void)setBackgroundLayoutEnabled: (BOOL)flag
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{
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_backgroundLayout = flag;
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}
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- (BOOL)backgroundLayoutEnabled
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{
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return _backgroundLayout;
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}
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//
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// Accessing glyphs
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//
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- (void)insertGlyph: (NSGlyph)aGlyph
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atGlyphIndex: (unsigned)glyphIndex
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characterIndex: (unsigned)charIndex
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{
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}
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- (NSGlyph)glyphAtIndex: (unsigned)index
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{
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return NSNullGlyph;
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}
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- (NSGlyph)glyphAtIndex: (unsigned)index
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isValidIndex: (BOOL *)flag
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{
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*flag = NO;
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return NSNullGlyph;
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}
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- (void)replaceGlyphAtIndex: (unsigned)index
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withGlyph: (NSGlyph)newGlyph
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{
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}
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- (unsigned)getGlyphs: (NSGlyph *)glyphArray
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range: (NSRange)glyphRange
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{
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return (unsigned)0;
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}
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- (void)deleteGlyphsInRange: (NSRange)aRange
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{
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}
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- (unsigned)numberOfGlyphs
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{
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return 0;
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}
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//
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// Mapping characters to glyphs
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//
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- (void)setCharacterIndex: (unsigned)charIndex
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forGlyphAtIndex: (unsigned)glyphIndex
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{
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}
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- (unsigned)characterIndexForGlyphAtIndex: (unsigned)glyphIndex
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{
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return 0;
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}
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- (NSRange)characterRangeForGlyphRange: (NSRange)glyphRange
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actualGlyphRange: (NSRange *)actualGlyphRange
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{
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return NSMakeRange(0, 0);
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}
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- (NSRange)glyphRangeForCharacterRange: (NSRange)charRange
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actualCharacterRange: (NSRange *)actualCharRange
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{
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return NSMakeRange(0, 0);
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}
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//
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// Setting glyph attributes
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//
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// Each NSGlyph has an attribute field, yes?
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- (void)setIntAttribute: (int)attribute
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value: (int)anInt
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forGlyphAtIndex: (unsigned)glyphIndex
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{
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}
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- (int)intAttribute: (int)attribute
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forGlyphAtIndex: (unsigned)glyphIndex
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{
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return 0;
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}
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//
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// Handling layout for text containers
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//
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- (void)setTextContainer: (NSTextContainer *)aTextContainer
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forGlyphRange: (NSRange)glyphRange
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{
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GSTextContainerLayoutInfo *theLine = [GSTextContainerLayoutInfo new];
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theLine->glyphRange = glyphRange;
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ASSIGN(theLine->textContainer, aTextContainer);
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[containerRuns insertObject:theLine];
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}
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- (NSRange)glyphRangeForTextContainer: (NSTextContainer *)aTextContainer
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{
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int i;
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NSLog(@"glyphRangeForTextContainer: called. There are %d
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textContainer(s) in containerRuns.", [containerRuns count]);
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for (i=0;i<[containerRuns count];i++)
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{
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GSTextContainerLayoutInfo *aNewLine = [containerRuns objectAtIndex:i];
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NSLog(@"glyphRangeForTextContainer: (%d, %d)",
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aNewLine->glyphRange.location,
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aNewLine->glyphRange.length);
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if ([aNewLine->textContainer isEqual:aTextContainer])
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{
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NSLog(@"glyphRangeForWantedTextContainer: (%d, %d)",
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aNewLine->glyphRange.location,
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aNewLine->glyphRange.length);
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return aNewLine->glyphRange;
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}
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}
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return NSMakeRange(NSNotFound, 0);
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}
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|
|
- (NSTextContainer *)textContainerForGlyphAtIndex: (unsigned)glyphIndex
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effectiveRange: (NSRange *)effectiveRange
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{
|
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GSTextContainerLayoutInfo *theLine = [containerRuns objectContainingLocation:glyphIndex];
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|
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if(theLine)
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{
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(NSRange *)effectiveRange = &theLine->glyphRange;
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return theLine->textContainer;
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}
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(NSRange *)effectiveRange = NULL;
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return nil;
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}
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|
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//
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// Handling line fragment rectangles
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//
|
|
- (void)setLineFragmentRect: (NSRect)fragmentRect
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forGlyphRange: (NSRange)glyphRange
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usedRect: (NSRect)usedRect
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{
|
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GSLineLayoutInfo *aNewLine = [GSLineLayoutInfo new];
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|
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aNewLine->glyphRange = glyphRange;
|
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aNewLine->lineFragmentRect = fragmentRect;
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aNewLine->usedRect = usedRect;
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|
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[fragmentRuns insertObject:aNewLine];
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}
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|
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- (NSRect)lineFragmentRectForGlyphAtIndex: (unsigned)glyphIndex
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|
effectiveRange: (NSRange *)lineFragmentRange
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|
{
|
|
GSLineLayoutInfo *theLine = [fragmentRuns objectContainingLocation:glyphIndex];
|
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|
|
if (theLine)
|
|
{
|
|
(NSRange *)lineFragmentRange = &theLine->glyphRange;
|
|
return theLine->lineFragmentRect;
|
|
}
|
|
|
|
(NSRange *)lineFragmentRange = NULL;
|
|
return NSZeroRect;
|
|
}
|
|
|
|
- (NSRect)lineFragmentUsedRectForGlyphAtIndex: (unsigned)glyphIndex
|
|
effectiveRange: (NSRange *)lineFragmentRange
|
|
{
|
|
GSLineLayoutInfo *theLine = [fragmentRuns objectContainingLocation:glyphIndex];
|
|
|
|
if (theLine)
|
|
{
|
|
(NSRange *)lineFragmentRange = &theLine->glyphRange;
|
|
return theLine->usedRect;
|
|
}
|
|
|
|
(NSRange *)lineFragmentRange = NULL;
|
|
return NSZeroRect;
|
|
}
|
|
|
|
- (void)setExtraLineFragmentRect: (NSRect)aRect
|
|
usedRect: (NSRect)usedRect
|
|
textContainer: (NSTextContainer *)aTextContainer
|
|
{
|
|
}
|
|
|
|
- (NSRect)extraLineFragmentRect
|
|
{
|
|
return NSZeroRect;
|
|
}
|
|
|
|
- (NSRect)extraLineFragmentUsedRect
|
|
{
|
|
return NSZeroRect;
|
|
}
|
|
|
|
- (NSTextContainer *)extraLineFragmentTextContainer
|
|
{
|
|
return nil;
|
|
}
|
|
|
|
- (void)setDrawsOutsideLineFragment: (BOOL)flag
|
|
forGlyphAtIndex: (unsigned)glyphIndex
|
|
{
|
|
}
|
|
|
|
- (BOOL)drawsOutsideLineFragmentForGlyphAtIndex: (unsigned)glyphIndex
|
|
{
|
|
return NO;
|
|
}
|
|
|
|
//
|
|
// Layout of glyphs
|
|
//
|
|
|
|
- (void)setLocation: (NSPoint)aPoint
|
|
forStartOfGlyphRange: (NSRange)glyphRange
|
|
{
|
|
GSGlyphLocation *aNewLine = [GSGlyphLocation new];
|
|
|
|
aNewLine->glyphRange = glyphRange;
|
|
aNewLine->point = aPoint;
|
|
|
|
[locationRuns insertObject:aNewLine];
|
|
}
|
|
|
|
- (NSPoint)locationForGlyphAtIndex: (unsigned)glyphIndex
|
|
{
|
|
return NSZeroPoint;
|
|
}
|
|
|
|
- (NSRange)rangeOfNominallySpacedGlyphsContainingIndex: (unsigned)glyphIndex
|
|
{
|
|
GSLineLayoutInfo *theLine = [locationRuns objectContainingLocation:glyphIndex];
|
|
|
|
if (theLine)
|
|
{
|
|
return theLine->glyphRange;
|
|
}
|
|
|
|
return NSMakeRange(NSNotFound, 0);
|
|
}
|
|
|
|
- (NSRect *)rectArrayForCharacterRange: (NSRange)charRange
|
|
withinSelectedCharacterRange: (NSRange)selChareRange
|
|
inTextContainer: (NSTextContainer *)aTextContainer
|
|
rectCount: (unsigned *)rectCount
|
|
{
|
|
/*
|
|
GSLineLayoutInfo *theLine = [GSLineLayoutInfo new];
|
|
int position, lastPosition;
|
|
int i, j = 0;
|
|
|
|
theLine->glyphRange.location = charRange.location;
|
|
|
|
position = GSIArrayInsertionPosition(lineFragments, (GSIArrayItem)theLine, aSort);
|
|
|
|
if (position < 0)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
theLine->glyphRange.location = charRange.location + charRange.length;
|
|
|
|
lastPosition = GSIArrayInsertionPosition(lineFragments, (GSIArrayItem)theLine, aSort);
|
|
|
|
if (lastPosition > 0)
|
|
{
|
|
_cachedRectArray = NSZoneRealloc([self zone], _cachedRectArray,
|
|
(lastPosition - position) * sizeof(NSRect));
|
|
|
|
_cachedRectArrayCapacity = lastPosition - position;
|
|
|
|
for (i = position - 1; i < lastPosition - 1; i++)
|
|
{
|
|
GSLineLayoutInfo *aLine = GSIArrayItemAtIndex(lineFragments, i).obj;
|
|
|
|
_cachedRectArray[j] = aLine->lineFragmentRect;
|
|
j++;
|
|
}
|
|
}
|
|
|
|
(*rectCount) = (position - 1 + lastPosition - 1);
|
|
return _cachedRectArray;
|
|
*/
|
|
}
|
|
|
|
- (NSRect *)rectArrayForGlyphRange: (NSRange)glyphRange
|
|
withinSelectedGlyphRange: (NSRange)selectedGlyphRange
|
|
inTextContainer: (NSTextContainer *)aTextContainer
|
|
rectCount: (unsigned *)rectCount
|
|
{
|
|
return _cachedRectArray;
|
|
}
|
|
|
|
- (NSRect)boundingRectForGlyphRange: (NSRange)glyphRange
|
|
inTextContainer: (NSTextContainer *)aTextContainer
|
|
{
|
|
|
|
/* Returns a single bounding rectangle enclosing all glyphs and other
|
|
marks drawn in aTextContainer for glyphRange, including glyphs that draw
|
|
outside their line fragment rectangles and text attributes such as
|
|
underlining. This method is useful for determining the area that needs to
|
|
be redrawn when a range of glyphs changes. */
|
|
/*
|
|
unsigned rectCount;
|
|
NSRect *rects = [self rectArrayForCharacterRange: [self glyphRangeForTextContainer:aTextContainer]
|
|
withinSelectedCharacterRange: NSMakeRange(0,0)
|
|
inTextContainer: aTextContainer
|
|
rectCount: &rectCount];
|
|
// NSPoint aOrigin = [aTextContainer originPoint];
|
|
NSRect rRect = NSZeroRect;
|
|
int i;
|
|
|
|
for (i=0;i<rectCount;i++)
|
|
{
|
|
NSRect aRect = rects[i];
|
|
|
|
if (aRect.origin.y == rRect.size.height)
|
|
rRect.size.height += aRect.size.width;
|
|
|
|
if (rRect.size.width == aRect.origin.x)
|
|
rRect.size.width += aRect.size.width;
|
|
}
|
|
|
|
return rRect;
|
|
*/
|
|
return NSZeroRect;
|
|
}
|
|
|
|
- (NSRange)glyphRangeForBoundingRect: (NSRect)aRect
|
|
inTextContainer: (NSTextContainer *)aTextContainer
|
|
{
|
|
return NSMakeRange(0, 0);
|
|
}
|
|
|
|
- (NSRange)glyphRangeForBoundingRectWithoutAdditionalLayout: (NSRect)bounds
|
|
inTextContainer: (NSTextContainer *)aTextContainer
|
|
{
|
|
return NSMakeRange(0, 0);
|
|
}
|
|
|
|
- (unsigned)glyphIndexForPoint: (NSPoint)aPoint
|
|
inTextContainer: (NSTextContainer *)aTextContainer
|
|
fractionOfDistanceThroughGlyph: (float *)partialFraction
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
//
|
|
// Display of special glyphs
|
|
//
|
|
- (void)setNotShownAttribute: (BOOL)flag
|
|
forGlyphAtIndex: (unsigned)glyphIndex
|
|
{
|
|
}
|
|
|
|
- (BOOL)notShownAttributeForGlyphAtIndex: (unsigned)glyphIndex
|
|
{
|
|
return YES;
|
|
}
|
|
|
|
- (void)setShowsInvisibleCharacters: (BOOL)flag
|
|
{
|
|
_showsInvisibleChars = flag;
|
|
}
|
|
|
|
- (BOOL)showsInvisibleCharacters
|
|
{
|
|
return _showsInvisibleChars;
|
|
}
|
|
|
|
- (void)setShowsControlCharacters: (BOOL)flag
|
|
{
|
|
_showsControlChars = flag;
|
|
}
|
|
|
|
- (BOOL)showsControlCharacters
|
|
{
|
|
return _showsControlChars;
|
|
}
|
|
|
|
//
|
|
// Controlling hyphenation
|
|
//
|
|
- (void)setHyphenationFactor: (float)factor
|
|
{
|
|
_hyphenationFactor = factor;
|
|
}
|
|
|
|
- (float)hyphenationFactor
|
|
{
|
|
return _hyphenationFactor;
|
|
}
|
|
|
|
//
|
|
// Finding unlaid characters/glyphs
|
|
//
|
|
- (void)getFirstUnlaidCharacterIndex: (unsigned *)charIndex
|
|
glyphIndex: (unsigned *)glyphIndex
|
|
{
|
|
}
|
|
|
|
- (unsigned int)firstUnlaidCharacterIndex
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
//
|
|
// Using screen fonts
|
|
//
|
|
- (void)setUsesScreenFonts: (BOOL)flag
|
|
{
|
|
_usesScreenFonts = flag;
|
|
}
|
|
|
|
- (BOOL)usesScreenFonts
|
|
{
|
|
return _usesScreenFonts;
|
|
}
|
|
|
|
- (NSFont *)substituteFontForFont: (NSFont *)originalFont
|
|
{
|
|
return originalFont;
|
|
}
|
|
|
|
//
|
|
// Handling rulers
|
|
//
|
|
- (NSView *)rulerAccessoryViewForTextView: (NSTextView *)aTextView
|
|
paragraphStyle: (NSParagraphStyle *)paragraphStyle
|
|
ruler: (NSRulerView *)aRulerView
|
|
enabled: (BOOL)flag
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
- (NSArray *)rulerMarkersForTextView: (NSTextView *)aTextView
|
|
paragraphStyle: (NSParagraphStyle *)paragraphStyle
|
|
ruler: (NSRulerView *)aRulerView
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
//
|
|
// Managing the responder chain
|
|
//
|
|
- (BOOL)layoutManagerOwnsFirstResponderInWindow: (NSWindow *)aWindow
|
|
{
|
|
return NO;
|
|
}
|
|
|
|
- (NSTextView *)firstTextView
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
- (NSTextView *)textViewForBeginningOfSelection
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
//
|
|
// Drawing
|
|
//
|
|
- (void)drawBackgroundForGlyphRange: (NSRange)glyphRange
|
|
atPoint: (NSPoint)containerOrigin
|
|
{
|
|
}
|
|
|
|
- (void)drawGlyphsForGlyphRange: (NSRange)glyphRange
|
|
atPoint: (NSPoint)containerOrigin
|
|
{
|
|
int firstPosition, lastPosition, i;
|
|
|
|
for (i=0;i<[fragmentRuns count];i++)
|
|
{
|
|
GSLineLayoutInfo *info = [fragmentRuns objectAtIndex:i];
|
|
|
|
/*
|
|
NSLog(@"i: %d glyphRange: (%d, %d) lineFragmentRect: (%f, %f) (%f, %f)",
|
|
i,
|
|
info->glyphRange.location,
|
|
info->glyphRange.length,
|
|
info->lineFragmentRect.origin.x,
|
|
info->lineFragmentRect.origin.y,
|
|
info->lineFragmentRect.size.width,
|
|
info->lineFragmentRect.size.height);
|
|
*/
|
|
}
|
|
|
|
firstPosition = [fragmentRuns indexOfObjectContainingLocation:glyphRange.location];
|
|
lastPosition = [fragmentRuns
|
|
indexOfObjectContainingLocation:(glyphRange.location+glyphRange.length-2)];
|
|
|
|
NSLog(@"glyphRange: (%d, %d) position1: %d position2: %d",
|
|
glyphRange.location, glyphRange.length, firstPosition, lastPosition);
|
|
|
|
if (firstPosition >= 0)
|
|
{
|
|
if (lastPosition == -1)
|
|
{
|
|
lastPosition = [fragmentRuns count]; // FIXME
|
|
NSLog(@"fixed lastPosition: %d", lastPosition);
|
|
}
|
|
|
|
for (i = firstPosition; i < lastPosition; i++)
|
|
{
|
|
GSLineLayoutInfo *aLine = [fragmentRuns objectAtIndex:i];
|
|
/*
|
|
NSLog(@"drawRange: (%d, %d) inRect (%f, %f) (%f, %f)",
|
|
aLine->glyphRange.location,
|
|
aLine->glyphRange.length,
|
|
aLine->lineFragmentRect.origin.x,
|
|
aLine->lineFragmentRect.origin.y,
|
|
aLine->lineFragmentRect.size.width,
|
|
aLine->lineFragmentRect.size.height);
|
|
*/
|
|
[_textStorage drawRange:aLine->glyphRange inRect:aLine->lineFragmentRect];
|
|
}
|
|
}
|
|
}
|
|
|
|
- (void)drawUnderlineForGlyphRange: (NSRange)glyphRange
|
|
underlineType: (int)underlineType
|
|
baselineOffset: (float)baselineOffset
|
|
lineFragmentRect: (NSRect)lineRect
|
|
lineFragmentGlyphRange: (NSRange)lineGlyphRange
|
|
containerOrigin: (NSPoint)containerOrigin
|
|
{
|
|
}
|
|
|
|
- (void)underlineGlyphRange: (NSRange)glyphRange
|
|
underlineType: (int)underlineType
|
|
lineFragmentRect: (NSRect)lineRect
|
|
lineFragmentGlyphRange: (NSRange)lineGlyphRange
|
|
containerOrigin: (NSPoint)containerOrigin
|
|
{
|
|
}
|
|
|
|
//
|
|
// Setting the delegate
|
|
//
|
|
- (void)setDelegate: (id)aDelegate
|
|
{
|
|
_delegate = aDelegate;
|
|
}
|
|
|
|
- (id)delegate
|
|
{
|
|
return _delegate;
|
|
}
|
|
|
|
@end /* NSLayoutManager */
|
|
|
|
/* Thew methods laid out here are not correct, however the code they
|
|
contain for the most part is. Therefore, my country and a handsome gift of
|
|
Ghiradelli chocolate to he who puts all the pieces together :) */
|
|
|
|
@interface _GNUTextScanner:NSObject
|
|
{ NSString *string;
|
|
NSCharacterSet *set,*iSet;
|
|
unsigned stringLength;
|
|
NSRange activeRange;
|
|
}
|
|
+(_GNUTextScanner*) scannerWithString:(NSString*) aStr set:(NSCharacterSet*) aSet invertedSet:(NSCharacterSet*) anInvSet;
|
|
-(void) setString:(NSString*) aString set:(NSCharacterSet*) aSet invertedSet:(NSCharacterSet*) anInvSet;
|
|
-(NSRange) _scanCharactersInverted:(BOOL) inverted;
|
|
-(NSRange) scanSetCharacters;
|
|
-(NSRange) scanNonSetCharacters;
|
|
-(BOOL) isAtEnd;
|
|
-(unsigned) scanLocation;
|
|
-(void) setScanLocation:(unsigned) aLoc;
|
|
@end
|
|
|
|
@implementation NSLayoutManager (Private)
|
|
- (int)_rebuildLayoutForTextContainer:(NSTextContainer *)aContainer
|
|
startingAtGlyphIndex:(int)glyphIndex
|
|
{
|
|
NSSize cSize = [aContainer containerSize];
|
|
float i = 0.0;
|
|
NSMutableArray *lines = [NSMutableArray new];
|
|
int indexToAdd;
|
|
_GNUTextScanner *lineScanner;
|
|
_GNUTextScanner *paragraphScanner;
|
|
BOOL lastLineForContainerReached = NO;
|
|
NSString *aString;
|
|
int previousScanLocation;
|
|
int endScanLocation;
|
|
int startIndex;
|
|
NSRect firstProposedRect;
|
|
NSRect secondProposedRect;
|
|
NSFont *default_font = [NSFont systemFontOfSize: 12.0];
|
|
int widthOfString;
|
|
NSSize rSize;
|
|
NSCharacterSet *selectionParagraphGranularitySet = [NSCharacterSet characterSetWithCharactersInString:@"\n"];
|
|
NSCharacterSet *selectionWordGranularitySet = [NSCharacterSet characterSetWithCharactersInString:@" "];
|
|
NSCharacterSet *invSelectionWordGranularitySet = [selectionWordGranularitySet invertedSet];
|
|
NSCharacterSet *invSelectionParagraphGranularitySet = [selectionParagraphGranularitySet invertedSet];
|
|
NSRange paragraphRange;
|
|
NSRange leadingSpacesRange;
|
|
NSRange currentStringRange;
|
|
NSRange trailingSpacesRange;
|
|
NSRange leadingNlRange;
|
|
NSSize lSize;
|
|
float lineWidth = 0.0;
|
|
float ourLines = 0.0;
|
|
|
|
NSLog(@"rebuilding Layout at index: %d.\n", glyphIndex);
|
|
|
|
// 1.) figure out how many glyphs we can fit in our container by
|
|
// breaking up glyphs from the first unlaid out glyph and breaking it
|
|
// into lines.
|
|
//
|
|
// 2.)
|
|
// a.) set the range for the container
|
|
// b.) for each line in step 1 we need to set a lineFragmentRect and
|
|
// an origin point.
|
|
|
|
|
|
// Here we go at part 1.
|
|
|
|
startIndex = glyphIndex;
|
|
|
|
// lineScanner = [NSScanner scannerWithString:[_textStorage string]];
|
|
|
|
paragraphScanner = [_GNUTextScanner scannerWithString:[_textStorage string]
|
|
set:selectionParagraphGranularitySet invertedSet:invSelectionParagraphGranularitySet];
|
|
|
|
[paragraphScanner setScanLocation:startIndex];
|
|
|
|
NSLog(@"length of textStorage: %d", [[_textStorage string] length]);
|
|
|
|
// NSLog(@"buffer: %@", [_textStorage string]);
|
|
|
|
// This scanner eats one word at a time, we should have it imbeded in
|
|
// another scanner that snacks on paragraphs (i.e. lines that end with
|
|
// \n). Look in NSText.
|
|
|
|
while (![paragraphScanner isAtEnd])
|
|
{
|
|
// leadingNlRange=[paragraphScanner scanSetCharacters];
|
|
paragraphRange = [paragraphScanner scanNonSetCharacters];
|
|
leadingNlRange=[paragraphScanner scanSetCharacters];
|
|
|
|
if (leadingNlRange.length)
|
|
currentStringRange = NSUnionRange (leadingNlRange,paragraphRange);
|
|
|
|
NSLog(@"paragraphRange: (%d, %d)", paragraphRange.location, paragraphRange.length);
|
|
|
|
NSLog(@"======> begin paragraph");
|
|
|
|
lineScanner = [_GNUTextScanner scannerWithString:[[_textStorage string] substringWithRange:paragraphRange]
|
|
set:selectionWordGranularitySet invertedSet:invSelectionWordGranularitySet];
|
|
|
|
while(![lineScanner isAtEnd])
|
|
{
|
|
previousScanLocation = [lineScanner scanLocation];
|
|
// snack next word
|
|
leadingSpacesRange = [lineScanner scanSetCharacters]; // leading spaces: only first time
|
|
currentStringRange = [lineScanner scanNonSetCharacters];
|
|
trailingSpacesRange= [lineScanner scanSetCharacters];
|
|
|
|
if (leadingSpacesRange.length)
|
|
currentStringRange = NSUnionRange (leadingSpacesRange,currentStringRange);
|
|
if (trailingSpacesRange.length)
|
|
currentStringRange = NSUnionRange (trailingSpacesRange,currentStringRange);
|
|
|
|
lSize = [_textStorage sizeRange:currentStringRange];
|
|
|
|
if (lineWidth + lSize.width < cSize.width)
|
|
{
|
|
if ([lineScanner isAtEnd])
|
|
{
|
|
NSLog(@"we are at end before finishing a line: %d.\n", [lineScanner scanLocation]);
|
|
[lines addObject:[NSNumber numberWithInt:(int)[lineScanner scanLocation] + paragraphRange.location]];
|
|
}
|
|
|
|
lineWidth += lSize.width;
|
|
NSLog(@"lineWidth: %f", lineWidth);
|
|
}
|
|
else
|
|
{
|
|
if (ourLines > cSize.height)
|
|
{
|
|
lastLineForContainerReached = YES;
|
|
break;
|
|
}
|
|
|
|
[lineScanner setScanLocation:previousScanLocation];
|
|
indexToAdd = previousScanLocation + paragraphRange.location;
|
|
ourLines += 14.0;
|
|
lineWidth = 0;
|
|
|
|
NSLog(@"indexToAdd: %d\tourLines: %f", indexToAdd, ourLines);
|
|
|
|
[lines addObject:[NSNumber numberWithInt:indexToAdd]];
|
|
}
|
|
}
|
|
|
|
if (lastLineForContainerReached)
|
|
break;
|
|
}
|
|
|
|
endScanLocation = [lineScanner scanLocation] + paragraphRange.location;
|
|
|
|
NSLog(@"endScanLocation: %d", endScanLocation);
|
|
|
|
// set this container for that glyphrange
|
|
|
|
[self setTextContainer:aContainer
|
|
forGlyphRange:NSMakeRange(startIndex, endScanLocation - startIndex)];
|
|
|
|
NSLog(@"ok, move on to step 2.");
|
|
|
|
// step 2. break the lines up and assign rects to them.
|
|
|
|
for (i=0;i<[lines count];i++)
|
|
{
|
|
NSRect aRect, bRect;
|
|
float padding = [aContainer lineFragmentPadding];
|
|
NSRange ourRange;
|
|
|
|
NSLog(@"\t\t===> %d", [[lines objectAtIndex:i] intValue]);
|
|
|
|
if (i == 0)
|
|
{
|
|
ourRange = NSMakeRange (startIndex,
|
|
[[lines objectAtIndex:i] intValue] - startIndex);
|
|
}
|
|
else
|
|
{
|
|
ourRange = NSMakeRange ([[lines objectAtIndex:i-1] intValue],
|
|
[[lines objectAtIndex:i] intValue] - [[lines objectAtIndex:i-1]
|
|
intValue]);
|
|
}
|
|
|
|
firstProposedRect = NSMakeRect (0, i * 14, cSize.width, 14);
|
|
|
|
// ask our textContainer to fix our lineFragment.
|
|
|
|
secondProposedRect = [aContainer
|
|
lineFragmentRectForProposedRect: firstProposedRect
|
|
sweepDirection: NSLineSweepLeft
|
|
movementDirection: NSLineMoveLeft
|
|
remainingRect: &bRect];
|
|
|
|
// set the line fragmentRect for this range.
|
|
|
|
[self setLineFragmentRect: secondProposedRect
|
|
forGlyphRange: ourRange
|
|
usedRect: aRect];
|
|
|
|
// set the location for this string to be 'show'ed.
|
|
|
|
[self setLocation:NSMakePoint(secondProposedRect.origin.x + padding,
|
|
secondProposedRect.origin.y + padding)
|
|
forStartOfGlyphRange: ourRange];
|
|
}
|
|
|
|
// bloody hack.
|
|
// if (moreText)
|
|
// [delegate layoutManager:self
|
|
// didCompleteLayoutForTextContainer:[textContainers objectAtIndex:i]
|
|
// atEnd:NO];
|
|
// else
|
|
// [delegate layoutManager:self
|
|
// didCompleteLayoutForTextContainer:[textContainers objectAtIndex:i]
|
|
// atEnd:YES];
|
|
|
|
[lines release];
|
|
|
|
return endScanLocation;
|
|
}
|
|
|
|
- (void)_doLayout
|
|
{
|
|
int i;
|
|
BOOL moreText;
|
|
int gIndex = 0;
|
|
|
|
NSLog(@"doLayout called.\n");
|
|
|
|
for (i=0;i<[_textContainers count];i++)
|
|
{
|
|
gIndex = [self _rebuildLayoutForTextContainer:[_textContainers objectAtIndex:i]
|
|
startingAtGlyphIndex:gIndex];
|
|
}
|
|
}
|
|
@end
|