NSTextContainer update.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@4421 72102866-910b-0410-8b05-ffd578937521
2025-05-29 20:47:38 +00:00 · 1999-06-17 15:08:05 +00:00 · 1999-06-17 15:08:05 +00:00 · 8ab2a93c25
commit 8ab2a93c25
parent f794f819cf
4 changed files with 290 additions and 81 deletions
--- a/Source/NSTextContainer.m
+++ b/Source/NSTextContainer.m
@ -0,0 +1,207 @@
+/* 
+   NSTextContainer.m
+
+   Copyright (C) 1999 Free Software Foundation, Inc.
+
+   Author:  Jonathan Gapen <jagapen@smithlab.chem.wisc.edu>
+   Date: 1999
+  
+   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.
+*/ 
+
+#import <AppKit/NSLayoutManager.h>
+#import <AppKit/NSTextContainer.h>
+#import <AppKit/NSTextStorage.h>
+#import <AppKit/NSTextView.h>
+#import <Foundation/NSGeometry.h>
+#import <Foundation/NSNotification.h>
+
+@interface NSTextContainer (TextViewObserver)
+- (void) _textViewFrameChanged: (NSNotification *)aNotification;
+@end
+
+@implementation NSTextContainer (TextViewObserver)
+
+- (void) _textViewFrameChanged: (NSNotification *)aNotification
+{
+  id		textView;
+  NSSize	newSize;
+  NSSize	inset;
+
+  if ( _observingFrameChanges )
+    {
+      textView = [aNotification object];
+      newSize = [textView frame].size;
+      inset = [textView textContainerInset];
+
+      if ( _widthTracksTextView )
+	newSize.width = MAX(newSize.width - (inset.width * 2.0), 0.0);
+      if ( _heightTracksTextView )
+	newSize.height = MAX(newSize.height - (inset.height * 2.0), 0.0);
+
+      [self setContainerSize: newSize];
+    }
+}
+
+@end /* NSTextContainer (TextViewObserver) */
+
+@implementation NSTextContainer
+
+ (void) initialize
+{
+  if ( self == [NSTextContainer class] )
+    [self setVersion: 1];
+}
+
+- (id) initWithContainerSize: (NSSize)aSize
+{
+  NSLog(@"NSTextContainer initWithContainerSize");
+  _layoutManager = nil;
+  _textView = nil;
+  _containerRect.size = aSize;
+  _lineFragmentPadding = 0.0;
+  _observingFrameChanges = NO;
+  _widthTracksTextView = NO;
+  _heightTracksTextView = NO;
+
+  return self;
+}
+
+- (void) setLayoutManager: (NSLayoutManager *)aLayoutManager
+{
+  ASSIGN(_layoutManager, aLayoutManager);
+}
+
+- (NSLayoutManager *) layoutManager
+{
+  return _layoutManager;
+}
+
+- (void) replaceLayoutManager: (NSLayoutManager *)newLayoutManager
+{
+  id		textStorage = [_layoutManager textStorage];
+  NSArray	*textContainers = [_layoutManager textContainers]; 
+  unsigned	i, count = [textContainers count];
+
+  [textStorage removeLayoutManager: _layoutManager];
+  [textStorage addLayoutManager: newLayoutManager];
+  [_layoutManager setTextStorage: nil];
+
+  for ( i = 0; i < count; i++ )
+    {
+      [newLayoutManager addTextContainer: [textContainers objectAtIndex: i]];
+      [_layoutManager removeTextContainerAtIndex: i];
+    }
+}
+
+- (void) setTextView: (NSTextView *)aTextView
+{
+  if ( _textView )
+    {
+      [_textView setTextContainer: nil];
+      [[NSNotificationCenter defaultCenter] removeObserver: self];
+    }
+
+  ASSIGN(_textView, aTextView);
+
+  if ( aTextView )
+    {
+      [_textView setTextContainer: self];
+      [[NSNotificationCenter defaultCenter] addObserver: self
+	selector: @selector(_textViewFrameChanged: )
+	    name: NSViewFrameDidChangeNotification
+	  object: _textView];
+    }
+}
+
+- (NSTextView *) textView
+{
+  return _textView;
+}
+
+- (void) setContainerSize: (NSSize)aSize
+{
+  _containerRect = NSMakeRect(0, 0, aSize.width, aSize.height);
+
+  if ( _layoutManager )
+    [_layoutManager textContainerChangedGeometry: self];
+}
+
+- (NSSize) containerSize
+{
+  return _containerRect.size;
+}
+
+- (void) setWidthTracksTextView: (BOOL)flag
+{
+  _widthTracksTextView = flag;
+  _observingFrameChanges = _widthTracksTextView | _heightTracksTextView;
+}
+
+- (BOOL) widthTracksTextView
+{
+  return _widthTracksTextView;
+}
+
+- (void) setHeightTracksTextView: (BOOL)flag
+{
+  _heightTracksTextView = flag;
+  _observingFrameChanges = _widthTracksTextView | _heightTracksTextView;
+}
+
+- (BOOL) heightTracksTextView
+{
+  return _heightTracksTextView;
+}
+
+- (void) setLineFragmentPadding: (float)aFloat
+{
+  _lineFragmentPadding = aFloat;
+
+  if ( _layoutManager )
+    [_layoutManager textContainerChangedGeometry: self];
+}
+
+- (float) lineFragmentPadding
+{
+  return _lineFragmentPadding;
+}
+
+- (NSRect) lineFragmentRectForProposedRect: (NSRect)proposedRect
+			    sweepDirection: (NSLineSweepDirection)sweepDir
+			 movementDirection: (NSLineMovementDirection)moveDir
+			     remainingRect: (NSRect *)remainingRect;
+{
+  // line fragment rectangle simply must fit within the container rectangle
+  *remainingRect = NSZeroRect;
+  return NSIntersectionRect(proposedRect, _containerRect);
+}
+
+- (BOOL) isSimpleRectangularTextContainer
+{
+  // sub-classes may say no; this class always says yes
+  return YES;
+}
+
+- (BOOL) containsPoint: (NSPoint)aPoint
+{
+  return NSPointInRect(aPoint, _containerRect);
+}
+
+@end /* NSTextContainer */
+