Export GSImageMagickImageRep.h so that it can to used externally

Headers/AppKit/NSPDFImageRep.h

@@ -26,7 +26,7 @@
 #define _NSPDFImageRep_h_GNUSTEP_GUI_INCLUDE
 
 #include <AppKit/NSImageRep.h>
-#include "GNUstepGUI/GSImageMagickImageRep.h"
+#include <GNUstepGUI/GSImageMagickImageRep.h>
 
 #if OS_API_VERSION(MAC_OS_X_VERSION_10_0, GS_API_LATEST)
 

Source/GNUmakefile

@@ -497,6 +497,7 @@ GSPrintOperation.h \
 GSEPSPrintOperation.h \
 GSPDFPrintOperation.h \
 GSModelLoaderFactory.h \
+GSImageMagickImageRep.h \
 GSInstantiator.h \
 GSSoundSink.h \
 GSSoundSource.h \

Source/NSImageRep.m

@@ -69,6 +69,8 @@ static Class NSImageRep_class = NULL;
       imageReps = [[NSMutableArray alloc] initWithCapacity: 4];
       [imageReps addObject: [NSBitmapImageRep class]];
 #if HAVE_IMAGEMAGICK
+      [imageReps addObject: [NSPDFImageRep class]];
+      [imageReps addObject: [NSPICTImageRep class]];
       [imageReps addObject: [GSImageMagickImageRep class]];
 #endif
     }

Source/NSPDFImageRep.m

@@ -1,7 +1,7 @@
 /* Implementation of class NSPDFImageRep
    Copyright (C) 2019 Free Software Foundation, Inc.
    
-   By: heron
+   By: Gregory Casamento <greg.casamento@gmail.com>
    Date: Fri Nov 15 04:24:27 EST 2019
 
    This file is part of the GNUstep Library.
@@ -23,8 +23,20 @@
 */
 
 #include <AppKit/NSPDFImageRep.h>
+#include <Foundation/NSString.h>
+#include <Foundation/NSData.h>
 
 @implementation NSPDFImageRep
+
++ (BOOL) canInitWithData: (NSData *)imageData
+{
+  NSData *header = [imageData subdataWithRange: NSMakeRange(0,4)];
+  NSString *str = [[NSString alloc] initWithData: header encoding: NSUTF8StringEncoding];
+  AUTORELEASE(str);
+  return [str isEqualToString: @"%PDF"] &&
+    [super canInitWithData: imageData];
+}
+
 + (instancetype) imageRepWithData: (NSData *)imageData
 {
   return AUTORELEASE([[self alloc] initWithData: imageData]);