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https://github.com/gnustep/libs-gui.git
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Initial implementation of NSImage* classes based upon Adam Feodor's work.
Changes to utilize the TIFF library. Uncomment some code now that NSException and NSNotification* classes exist. git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@1654 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
gnustep
parent
f862cf8a2b
commit
1e3870ceb7
21 changed files with 2235 additions and 668 deletions
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@ -1,14 +1,14 @@
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/*
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NSImageRep.m
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Description...
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Abstract representation of an image.
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Copyright (C) 1996 Free Software Foundation, Inc.
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Author: Scott Christley <scottc@net-community.com>
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Date: 1996
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This file is part of the GNUstep GUI Library.
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Written by: Adam Fedor <fedor@colorado.edu>
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Date: Feb 1996
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This file is part of the GNUstep Application Kit 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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@ -19,7 +19,7 @@
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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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If you are interested in a warranty or support for this source code,
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contact Scott Christley <scottc@net-community.com> for more information.
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@ -28,206 +28,369 @@
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Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <gnustep/gui/NSImageRep.h>
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#include <string.h>
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#include <Foundation/NSArray.h>
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#include <Foundation/NSData.h>
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#include <Foundation/NSNotification.h>
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#include <AppKit/NSImageRep.h>
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#include <AppKit/NSBitmapImageRep.h>
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#include <AppKit/NSEPSImageRep.h>
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// NSImageRep notifications
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NSString *NSImageRepRegistryChangedNotification;
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/* Backend protocol - methods that must be implemented by the backend to
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complete the class */
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@protocol NXImageRepBackend
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- (BOOL) drawAtPoint: (NSPoint)aPoint;
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- (BOOL) drawInRect: (NSRect)aRect;
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@end
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static NSMutableArray* imageReps = NULL;
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/* Get the extension from a name */
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static NSString *
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extension(NSString *name)
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{
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/* Waiting for NSString to be complete */
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#if 0
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return [name pathExtension];
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#else
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char *s;
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s = strrchr([name cString], '.');
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if (s > strrchr([name cString], '/'))
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return [NSString stringWithCString:s+1];
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else
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return nil;
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#endif
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}
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@implementation NSImageRep
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//
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// Class methods
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//
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+ (void)initialize
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+ (void) initialize
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{
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if (self == [NSImageRep class])
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{
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// Initial version
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[self setVersion:1];
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}
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/* While there are four imageRep subclasses, in practice, only two of
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them can load in data from an external source. */
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imageReps = [[NSMutableArray alloc] initWithCapacity: 2];
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[imageReps addObject: [NSBitmapImageRep class]];
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[imageReps addObject: [NSEPSImageRep class]];
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}
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//
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// Creating an NSImageRep
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//
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+ (id)imageRepWithContentsOfFile:(NSString *)filename
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+ (id) imageRepWithContentsOfFile: (NSString *)filename
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{
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NSArray* array;
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array = [self imageRepsWithContentsOfFile: filename];
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if ([array count])
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return [array objectAtIndex: 0];
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return nil;
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}
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+ (NSArray *)imageRepsWithContentsOfFile:(NSString *)filename
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+ (NSArray *) imageRepsWithContentsOfFile: (NSString *)filename
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{
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int i, count;
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NSString* ext;
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NSMutableArray* array;
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ext = extension(filename);
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// FIXME: Should this be an exception? Should we even check this?
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if (!ext)
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return nil;
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array = [NSMutableArray arrayWithCapacity:1];
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count = [imageReps count];
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for (i = 0; i < count; i++)
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{
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Class rep = [imageReps objectAtIndex: i];
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if ([[rep imageFileTypes] indexOfObject: ext] != NSNotFound)
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{
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NSData* data = [NSData dataWithContentsOfFile: filename];
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if ([rep class] == [NSBitmapImageRep class])
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[array addObject: [rep imageRepWithData: data]];
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}
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#if 0
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if ([rep respondsToSelector: @selector(imageFileTypes)]
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&& [[rep imageFileTypes] indexOfObject: ext] != NSNotFound)
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{
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NSData* data = [NSData dataWithContentsOfFile: filename];
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if ([rep respondsToSelector: @selector(imageRepsWithData:)])
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[array addObjectsFromArray: [rep imageRepsWithData: data]];
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else if ([rep respondsToSelector: @selector(imageRepWithData:)])
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[array addObject: [rep imageRepWithData: data]];
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}
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#endif
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}
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return (NSArray *)array;
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}
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+ (id) imageRepWithPasteboard: (NSPasteboard *)pasteboard
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{
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NSArray* array;
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array = [self imageRepsWithPasteboard: pasteboard];
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if ([array count])
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return [array objectAtIndex: 0];
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return nil;
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}
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+ (id)imageRepWithPasteboard:(NSPasteboard *)pasteboard
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+ (NSArray *) imageRepsWithPasteboard: (NSPasteboard *)pasteboard
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{
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return nil;
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int i, count;
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NSMutableArray* array;
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array = [NSMutableArray arrayWithCapacity:1];
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count = [imageReps count];
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for (i = 0; i < count; i++)
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{
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NSString* ptype;
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Class rep = [imageReps objectAtIndex: i];
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if ([rep respondsToSelector: @selector(imagePasteboardTypes)]
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&& (ptype =
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[pasteboard availableTypeFromArray:[rep imagePasteboardTypes]]))
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{
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NSData* data = [pasteboard dataForType: ptype];
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if ([rep respondsToSelector: @selector(imageRepsWithData:)])
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[array addObjectsFromArray: [rep imageRepsWithData: data]];
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else if ([rep respondsToSelector: @selector(imageRepWithData:)])
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[array addObject: [rep imageRepWithData: data]];
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}
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}
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return (NSArray *)array;
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}
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+ (NSArray *)imageRepsWithPasteboard:(NSPasteboard *)pasteboard
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- (void) dealloc
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{
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return nil;
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[colorSpace release];
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[super dealloc];
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}
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//
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// Checking Data Types
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//
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+ (BOOL)canInitWithData:(NSData *)data
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+ (BOOL) canInitWithData: (NSData *)data
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{
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/* Subclass responsibility */
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return NO;
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}
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+ (BOOL)canInitWithPasteboard:(NSPasteboard *)pasteboard
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+ (BOOL) canInitWithPasteboard: (NSPasteboard *)pasteboard
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{
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/* Subclass responsibility */
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return NO;
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}
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+ (NSArray *)imageFileTypes
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+ (NSArray *) imageFileTypes
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{
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/* Subclass responsibility */
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return nil;
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}
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+ (NSArray *)imagePasteboardTypes
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+ (NSArray *) imagePasteboardTypes
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{
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/* Subclass responsibility */
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return nil;
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}
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+ (NSArray *)imageUnfilteredFileTypes
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+ (NSArray *) imageUnfilteredFileTypes
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{
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/* Subclass responsibility */
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return nil;
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}
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+ (NSArray *)imageUnfilteredPasteboardTypes
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+ (NSArray *) imageUnfilteredPasteboardTypes
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{
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/* Subclass responsibility */
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return nil;
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}
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//
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// Managing NSImageRep Subclasses
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//
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+ (Class)imageRepClassForData:(NSData *)data
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{
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return NULL;
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}
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+ (Class)imageRepClassForFileType:(NSString *)type
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{
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return NULL;
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}
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+ (Class)imageRepClassForPasteboardType:(NSString *)type
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{
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return NULL;
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}
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+ (void)registerImageRepClass:(Class)imageRepClass
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{}
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+ (NSArray *)registeredImageRepClasses
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{
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return nil;
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}
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+ (void)unregisterImageRepClass:(Class)imageRepClass
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{}
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//
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// Instance methods
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//
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//
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// Setting the Size of the Image
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//
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- (void)setSize:(NSSize)aSize
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{}
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- (NSSize)size
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- (void) setSize: (NSSize)aSize
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{
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return NSZeroSize;
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size = aSize;
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}
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- (NSSize) size
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{
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return size;
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}
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//
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// Specifying Information about the Representation
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//
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- (int)bitsPerSample
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- (int) bitsPerSample
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{
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return 0;
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return bitsPerSample;
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}
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- (NSString *)colorSpaceName
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- (NSString *) colorSpaceName
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{
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return nil;
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return colorSpace;
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}
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- (BOOL)hasAlpha
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- (BOOL) hasAlpha
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{
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return NO;
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return hasAlpha;
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}
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- (BOOL)isOpaque
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- (BOOL) isOpaque
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{
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return NO;
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return isOpaque;
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}
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- (int)pixelsHigh
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- (int) pixelsWide
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{
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return 0;
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return _pixelsWide;
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}
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- (int)pixelsWide
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- (int) pixelsHigh
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{
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return 0;
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return _pixelsHigh;
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}
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- (void)setAlpha:(BOOL)flag
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{}
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- (void) setAlpha: (BOOL)flag
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{
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hasAlpha = flag;
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}
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- (void)setBitsPerSample:(int)anInt
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{}
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- (void) setBitsPerSample: (int)anInt
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{
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bitsPerSample = anInt;
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}
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- (void)setColorSpaceName:(NSString *)aString
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{}
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- (void) setColorSpaceName: (NSString *)aString
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{
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[colorSpace autorelease];
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colorSpace = [aString retain];
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}
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- (void)setOpaque:(BOOL)flag
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{}
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- (void) setOpaque: (BOOL)flag
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{
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isOpaque = flag;
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}
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- (void)setPixelsHigh:(int)anInt
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{}
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- (void) setPixelsWide: (int)anInt
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{
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_pixelsWide = anInt;
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}
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- (void)setPixelsWide:(int)anInt
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{}
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- (void) setPixelsHigh: (int)anInt
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{
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_pixelsHigh = anInt;
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}
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//
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// Drawing the Image
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//
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- (BOOL)draw
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- (BOOL) draw
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{
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[self subclassResponsibility: _cmd];
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return NO;
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}
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- (BOOL) drawAtPoint: (NSPoint)aPoint
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{
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return NO;
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}
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- (BOOL)drawAtPoint:(NSPoint)aPoint
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- (BOOL) drawInRect: (NSRect)aRect
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{
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return NO;
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}
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- (BOOL)drawInRect:(NSRect)aRect
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// Managing NSImageRep Subclasses
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+ (Class) imageRepClassForData: (NSData *)data
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{
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return NO;
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int i, count;
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count = [imageReps count];
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for (i = 0; i < count; i++)
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{
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Class rep = [imageReps objectAtIndex: i];
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if ([rep canInitWithData: data])
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return rep;
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}
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return Nil;
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}
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+ (Class) imageRepClassForFileType: (NSString *)type
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{
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int i, count;
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count = [imageReps count];
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for (i = 0; i < count; i++)
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{
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Class rep = [imageReps objectAtIndex: i];
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if ([rep respondsToSelector: @selector(imageFileTypes)]
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&& [[rep imageFileTypes] indexOfObject: type] != NSNotFound)
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{
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return rep;
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}
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}
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return Nil;
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}
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+ (Class) imageRepClassForPasteboardType: (NSString *)type
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{
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int i, count;
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count = [imageReps count];
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for (i = 0; i < count; i++)
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{
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Class rep = [imageReps objectAtIndex: i];
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if ([rep respondsToSelector: @selector(imagePasteboardTypes)]
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&& ([[rep imagePasteboardTypes] indexOfObject: type] != NSNotFound))
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{
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return rep;
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}
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}
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return Nil;
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}
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+ (void) registerImageRepClass: (Class)imageRepClass
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{
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[imageReps addObject: imageRepClass];
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[[NSNotificationCenter defaultCenter]
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postNotificationName: NSImageRepRegistryChangedNotification
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object: self];
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}
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+ (NSArray *) registeredImageRepClasses
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{
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return (NSArray *)imageReps;
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}
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+ (void) unregisterImageRepClass: (Class)imageRepClass
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{
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[imageReps removeObject: imageRepClass];
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[[NSNotificationCenter defaultCenter]
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postNotificationName: NSImageRepRegistryChangedNotification
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object: self];
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}
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//
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// NSCoding protocol
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//
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- (void)encodeWithCoder:aCoder
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- (void) encodeWithCoder: aCoder
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{
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[super encodeWithCoder:aCoder];
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[super encodeWithCoder: aCoder];
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[aCoder encodeObject: colorSpace];
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[aCoder encodeSize: size];
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[aCoder encodeValueOfObjCType: @encode(BOOL) at: &hasAlpha];
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[aCoder encodeValueOfObjCType: @encode(BOOL) at: &isOpaque];
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[aCoder encodeValueOfObjCType: @encode(int) at: &bitsPerSample];
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[aCoder encodeValueOfObjCType: @encode(int) at: &_pixelsWide];
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[aCoder encodeValueOfObjCType: @encode(int) at: &_pixelsHigh];
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}
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- initWithCoder:aDecoder
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- initWithCoder: aDecoder
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{
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[super initWithCoder:aDecoder];
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self = [super initWithCoder: aDecoder];
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colorSpace = [[aDecoder decodeObject] retain];
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size = [aDecoder decodeSize];
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[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &hasAlpha];
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[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &isOpaque];
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[aDecoder decodeValueOfObjCType: @encode(int) at: &bitsPerSample];
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[aDecoder decodeValueOfObjCType: @encode(int) at: &_pixelsWide];
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[aDecoder decodeValueOfObjCType: @encode(int) at: &_pixelsHigh];
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return self;
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}
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@end
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