Extract glyph generation code into separate class.

Plus some additional cleanup.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@26523 72102866-910b-0410-8b05-ffd578937521

Headers/AppKit/NSGlyphGenerator.h

@@ -0,0 +1,74 @@
+/* -*-objc-*-
+   NSGlyphGenerator.h
+
+   Interfaces for glyph generation and storage.
+
+   Copyright (C) 1996 Free Software Foundation, Inc.
+
+   Author:  H. N. Schaller <hns@computer.org>
+   Date: Jun 2006 - aligned with 10.4
+   
+   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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 3 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; see the file COPYING.LIB.
+   If not, see <http://www.gnu.org/licenses/> or write to the 
+   Free Software Foundation, 51 Franklin Street, Fifth Floor, 
+   Boston, MA 02110-1301, USA.
+*/ 
+
+#ifndef _GNUstep_H_NSGlyphGenerator
+#define _GNUstep_H_NSGlyphGenerator
+#import <GNUstepBase/GSVersionMacros.h>
+
+#import <Foundation/Foundation.h>
+// define NSGlyph
+#import <AppKit/NSFont.h>
+
+#if OS_API_VERSION(MAC_OS_X_VERSION_10_3, GS_API_LATEST)
+
+enum
+{
+  NSShowControlGlyphs = 1,
+  NSShowInvisibleGlyphs = 2,
+  NSWantsBidiLevels = 4
+};
+
+@protocol NSGlyphStorage
+
+- (NSAttributedString*) attributedString;
+- (void) insertGlyphs: (const NSGlyph*)glyphs
+               length: (NSUInteger)length
+forStartingGlyphAtIndex: (NSUInteger)glyph
+       characterIndex: (NSUInteger)index;
+- (NSUInteger) layoutOptions;
+- (void) setIntAttribute: (NSInteger)tag
+                   value: (NSInteger)value 
+         forGlyphAtIndex: (NSUInteger)index;
+
+@end
+
+
+@interface NSGlyphGenerator : NSObject
+
++ (id) sharedGlyphGenerator;
+- (void) generateGlyphsForGlyphStorage: (id <NSGlyphStorage>)storage
+             desiredNumberOfCharacters: (NSUInteger)num
+              glyphIndex: (NSUInteger*)glyph
+            characterIndex: (NSUInteger*)index;
+
+@end
+
+#endif // MAC_OS_X_VERSION_10_3
+
+#endif // _GNUstep_H_NSGlyphGenerator