libs-gui/Source/NSStringDrawing.m
Felipe A. Rodriguez 388f29cf3c * NSApplication.m minor optimiztions.
* NSAttributedString.m sizeWithAttributes: implement tab support.
	* NSStringDrawing.m sizeWithAttributes: implement tab support.
	* NSScroller.m trackScrollButtons: add temporary hack in support of XRAW's
		heavily optimized scrolling machinery.
	* NSScroller.m remove sendAction:to:
	* NSScrolView.m _doScroll: implement scroller update when scrolling via
		buttons
	* NSScrolView.m reflectScrolledClipView comment out setNeedsDisplay as it
		causes display flicker.
	* NSText.m add changes from Daniel B�hringer, set initFrame to default
		values to prevent infinite loop in rebuildLineLayout, minor tweaks
	* NSView.m minor optimiztions.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@3071 72102866-910b-0410-8b05-ffd578937521
1998-10-15 12:04:53 +00:00

64 lines
1.8 KiB
Objective-C

/*
NSStringDrawing.m
Category which adds measure capabilities to NSString.
Copyright (C) 1997 Free Software Foundation, Inc.
Author: Felipe A. Rodriguez <far@ix.netcom.com>
Date: Aug 1998
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 <AppKit/NSStringDrawing.h>
#include <AppKit/AppKit.h>
@implementation NSString(NSStringDrawing)
- (NSSize)sizeWithAttributes:(NSDictionary *)attrs
{
NSFont *font;
const char *str = [self cString];
int i = 0, j = 4;
float tabSize;
while(*str++ != '\0') // count the tabs
{
if(*str == '\t')
{
i += j;
j = 4;
}
else
j = j == 0 ? 4 : j--;
};
// if font is not
if(!(font = [attrs objectForKey:NSFontAttributeName])) // specified, use
font = [NSFont userFontOfSize:12]; // the default
fprintf(stderr,"string %s width: %f\n", [self cString], [font widthOfString:self]);
// tabSize = 4 * i * [font widthOfString:@" "];
tabSize = (float)i * [font widthOfString:@" "];
return NSMakeSize(([font widthOfString:self] + tabSize), [font pointSize]);
}
@end