#19 Import/export Paint.NET format

[Maurits Rijk]

If Paint.NET takes becomes succesful it would be nice
if we could read and write the pdn format.

[Maurits Rijk]

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Some sample C\code that displays information from a pdn
file. Reading a pdn file looks to be quite easy. Now we only
have to extract the exacxt data from the pdn file and
convert it to an xcf file.

I guess this will be a nice future (at least importing the
picture) for GIMP# 0.8

[Maurits Rijk]

Some sample code

[Maurits Rijk]

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I changed group to 0.8 because I think we should have this
in our next release. Importing the .pdn file format is going
to be more easy than I thought. Exporting to .pdn might be
more difficult since GIMP has certains features (for example
masks) that aren't supported yet by Paint.NET.

[Max Perga]

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Support for PDN import almost completed: still to evaluate
what could be ported beyond layers.
Moving to PDN export support.

[Maurits Rijk]

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On Linux I get:

Unhandled Exception:
System.Runtime.Serialization.SerializationException: Field
"m_compareInfo" not found in class
System.Collections.CaseInsensitiveComparer
in <0x00597>
System.Runtime.Serialization.Formatters.Binary.ObjectReader:ReadTypeMetadata
(System.IO.BinaryReader,bool,bool)
in <0x00040>
System.Runtime.Serialization.Formatters.Binary.ObjectReader:ReadObjectInstance
(System.IO.BinaryReader,bool,bool,long&,object&,System.Runtime.Serialization.SerializationInfo&)
in <0x00097>
System.Runtime.Serialization.Formatters.Binary.ObjectReader:ReadObject
(System.Runtime.Serialization.Formatters.Binary.BinaryElement,System.IO.BinaryReader,long&,object&,System.Runtime.Serialization.SerializationInfo&)
in <0x00072>
System.Runtime.Serialization.Formatters.Binary.ObjectReader:ReadNextObject
(System.IO.BinaryReader)
in <0x000b4>
System.Runtime.Serialization.Formatters.Binary.ObjectReader:ReadObjectGraph
(System.IO.BinaryReader,bool,object&,System.Runtime.Remoting.Messaging.Header[]&)
in <0x0011f>
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter:NoCheckDeserialize
(System.IO.Stream,System.Runtime.Remoting.Messaging.HeaderHandler)
in <0x00010>
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter:UnsafeDeserialize
(System.IO.Stream,System.Runtime.Remoting.Messaging.HeaderHandler)
in <0x0037c> PaintDotNet.Document:FromStream (System.IO.Stream)
in <0x00124> Gimp.Pdn.Pdn:Load (string)
in <0x00119> Gimp.FilePlugin:Run
(string,Gimp.ParamDefList,Gimp.ParamDefList&)
in <0x0006e> Gimp.Plugin:Run (string,int,intptr,int&,intptr&)
in <0x0004f> (wrapper native-to-managed) Gimp.Plugin:Run
(intptr,int,intptr,int&,intptr&)
in (unmanaged) 0xb73845d7
in <0x00004> (wrapper managed-to-native)
Gimp.Plugin:gimp_main (Gimp.Plugin/GimpPlugInInfo&,int,string[])
in <0x00176> Gimp.Plugin:.ctor (string[])
in <0x0000d> Gimp.FilePlugin:.ctor (string[])
in <0x0000d> Gimp.Pdn.Pdn:.ctor (string[])
in <0x00019> Gimp.Pdn.Pdn:Main (string[])

This could be caused by missing stuff in Mono. If needed, we
can file a bug report for them.

[Max Perga]

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I've created a symbolic link from plugins directory to the
local CVS repository for PDN DLLs and wrapper.

This is the stack trace I got:

Unhandled Exception: System.InvalidCastException: Cannot
cast from source type to destination type.
in <0x0014e> Gimp.FilePlugin:Run
(string,Gimp.ParamDefList,Gimp.ParamDefList&)
in <0x000b6> Gimp.Plugin:Run (string,int,intptr,int&,intptr&)
in <0x00080> (wrapper native-to-managed) Gimp.Plugin:Run
(intptr,int,intptr,int&,intptr&)
in (unmanaged) 0x2aaaac8d4cb6
in <0x00012> (wrapper managed-to-native)
Gimp.Plugin:gimp_main (Gimp.Plugin/GimpPlugInInfo&,int,string[])
in <0x001bb> Gimp.Plugin:.ctor (string[])
in <0x0001a> Gimp.FilePlugin:.ctor (string[])
in <0x0001a> Gimp.Pdn.Pdn:.ctor (string[])
in <0x00026> Gimp.Pdn.Pdn:Main (string[])

[Maurits Rijk]

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We have to decide if we want this in 0.8 as a windows-only
plug-in or delay it until 0.9. Max, what do you think?