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PhotoShopEPSFilter Class Reference

A filter that imports EPS files in Adobe Photoshop EPS format. Well, actually it doesn't as it's just a stub to stop Photoshop files from being loaded in (as they stuff up). More...

#include <ai_eps.h>

Inheritance diagram for PhotoShopEPSFilter:

EPSFilter VectorFilter Filter ListItem CCObject SimpleCCObject List of all members.

Public Member Functions

 PhotoShopEPSFilter ()
 Constructor for an PhotoShopEPSFilter object. The object should be initialised before use.
virtual BOOL Init ()
 Initialise an PhotoShopEPSFilter object.
virtual BOOL PrepareToImport ()
 Displays an error, if a photoshop EPS file is imported.

Protected Member Functions

virtual void CleanUpAfterImport (BOOL Successful)
 Cleans up after the PhotoShop "failed to import" message has been displayed.
virtual INT32 EPSHeaderIsOk (ADDR pFileHeader, UINT32 HeaderSize)
 Checks to see if the EPS comment headers specify that this is an Photoshop generated EPS file, as required.

Private Member Functions

 CC_DECLARE_DYNAMIC (PhotoShopEPSFilter)

Detailed Description

A filter that imports EPS files in Adobe Photoshop EPS format. Well, actually it doesn't as it's just a stub to stop Photoshop files from being loaded in (as they stuff up).

Author:
Chris_Gallimore (Xara Group Ltd) <camelotdev@xara.com>
Date:
9/11/00
See also:
EPSFilter

Definition at line 174 of file ai_eps.h.

Constructor & Destructor Documentation

PhotoShopEPSFilter::PhotoShopEPSFilter (   ) 
 

Constructor for an PhotoShopEPSFilter object. The object should be initialised before use.

Author:
Chris_Gallimore (Xara Group Ltd) <camelotdev@xara.com>
Date:
9/11/00
See also:
EPSFilter::Init

Definition at line 944 of file ai_eps.cpp.

00944                                        : EPSFilter ()
00945 {
00946     // Set up filter descriptions.
00947     FilterNameID = _R(IDT_PHOTOSHOPEPS_FILTERNAME);
00948     FilterInfoID = _R(IDT_IMPORTMSG_PHOTOSHOPEPS);
00949     ImportMsgID  = _R(IDT_IMPORTMSG_PHOTOSHOPEPS);
00950 
00951     FilterID = FILTERID_PHOTOSHOPEPS;
00952 
00953     Flags.CanImport = TRUE;
00954     Flags.CanExport = FALSE;
00955 }

Member Function Documentation

PhotoShopEPSFilter::CC_DECLARE_DYNAMIC (  PhotoShopEPSFilter   )  [private]
 

void PhotoShopEPSFilter::CleanUpAfterImport (  BOOL  Successful  )  [protected, virtual]
 

Cleans up after the PhotoShop "failed to import" message has been displayed.

Author:
Chris_Gallimore (Xara Group Ltd) <camelotdev@xara.com>
Date:
10/11/00
Parameters:
Successful,: TRUE => the import succeeded [INPUTS] FALSE => something went wrong with the import, so abandon all changes made.
See also:
PhotoShopEPSFilter::PrepareToImport; EPSFilter::PrepareToImport Scope: Protected

Reimplemented from EPSFilter.

Definition at line 1113 of file ai_eps.cpp.

01114 {
01115     // Inform all the document components that we have finished importing
01116     TheDocument->EPSEndImport(this, FALSE);
01117     TheDocument->PostImport();
01118 }

INT32 PhotoShopEPSFilter::EPSHeaderIsOk (  ADDR  pFileHeader,
UINT32  HeaderSize
)  [protected, virtual]
 

Checks to see if the EPS comment headers specify that this is an Photoshop generated EPS file, as required.

Author:
Chris_Gallimore (Xara Group Ltd) <camelotdev@xara.com>
Date:
9/11/00
Returns:
The compatibility in the range (0-10) 0 - It's not a photoshop file, so we ain't interested. 10 - It is, so let's stop it from importing.

Reimplemented from EPSFilter.

Definition at line 999 of file ai_eps.cpp.

01000 {
01001     UINT32  Lines   = 0;
01002     TCHAR   *Buffer = NULL;
01003 
01004     // !PS-Adobe line is ok - check creator line...
01005     CCMemTextFile HeaderFile ( reinterpret_cast<char *> ( pFileHeader ), HeaderSize );
01006 
01007     if( HeaderFile.IsMemFileInited () == FALSE || HeaderFile.InitLexer () == FALSE )
01008     {
01009         HeaderFile.close();
01010         return 0;
01011     }
01012 
01013     // Graeme (28/6/00) - Adobe have changed their file format, and so the first line can
01014     // now be a %PDF directive. Therefore look for this directive in the first twenty
01015     // lines.
01016     while ( ( Lines < 100 ) && !HeaderFile.eof () )
01017     {
01018         // Get the current line from the file.
01019         HeaderFile.GetLineToken();
01020         Buffer = const_cast<TCHAR *> ( HeaderFile.GetTokenBuf () );
01021 
01022         // Ensure that it's OK.
01023         ERROR2IF(Buffer == 0, 0, "Returned buffer from lex file == 0");
01024 
01025         // Increment the line counter.
01026         Lines++;
01027 
01028         if (camStrncmp(Buffer, _T("%!PS-Adobe"), 10) == 0)
01029         {
01030             // Now find the %%Creator string.
01031             while ((Lines < 100) && !HeaderFile.eof())
01032             {
01033                 HeaderFile.GetLineToken();
01034                 Buffer = const_cast<TCHAR *> ( HeaderFile.GetTokenBuf() );
01035                 ERROR2IF(Buffer == 0, 0, "Returned buffer from lex file == 0");
01036                 Lines++;
01037 
01038                 // Return TRUE if this file was created by Illustrator, or has been exported
01039                 // in Illustrator format.
01040                 if (camStrncmp(Buffer, _T("%%Creator: Adobe Photoshop"), 26) == 0)
01041                 {
01042                     // We definitely want this.
01043                     HeaderFile.close();
01044                     return 10;
01045                 }
01046 
01047                 // If we find the compression token then stop the search as we don't want to
01048                 // start looking in the compressed data!
01049                 if (camStrncmp(Buffer, _T("%%Compression:"), 14)==0)
01050                     break;
01051             }
01052 
01053             // Remember to close the file before returning.
01054             HeaderFile.close();
01055 
01056             // The photoshop EPS filter is only there to stop Xara X from importing Photoshop 
01057             //  EPS files - so it's not suitable.
01058             return 0;
01059         }
01060 
01061         // If we find the compression token then stop the search as we don't want to start
01062         // looking in the compressed data!
01063         if (camStrncmp(Buffer, _T("%%Compression:"), 14)==0)
01064             break;
01065     }
01066 
01067     // Remember to close the file before returning.
01068     HeaderFile.close();
01069     
01070     // This file type isn't suitable.
01071     return 0;
01072 }

BOOL PhotoShopEPSFilter::Init (  void   )  [virtual]
 

Initialise an PhotoShopEPSFilter object.

Author:
Chris_Gallimore (Xara Group Ltd) <camelotdev@xara.com>
Date:
9/11/00
Returns:
TRUE if the filter was initialised ok, FALSE otherwise.

Errors: will fail if not enough memory.

See also:
EPSFilter::Init

Reimplemented from EPSFilter.

Definition at line 970 of file ai_eps.cpp.

00971 {
00972     // Get the OILFilter object
00973     pOILFilter = new PhotoShopEPSOILFilter(this);
00974     if (pOILFilter == NULL)
00975         return FALSE;
00976 
00977     // Load the description strings
00978     FilterName.Load(FilterNameID);
00979     FilterInfo.Load(FilterInfoID);
00980 
00981     // All ok
00982     return TRUE;
00983 }

BOOL PhotoShopEPSFilter::PrepareToImport (   )  [virtual]
 

Displays an error, if a photoshop EPS file is imported.

Author:
Chris_Gallimore (Xara Group Ltd) <camelotdev@xara.com>
Date:
9/11/00
Returns:
FALSE - PhotoShop EPS files cannot be imported.

Reimplemented from EPSFilter.

Definition at line 1086 of file ai_eps.cpp.

01087 {
01088     // Display error message.
01089     String_256 WarnMsg;
01090 
01091     WarnMsg.MakeMsg(_R(IDT_IMPORTMSG_PHOTOSHOPEPS), _T(""));
01092     Error::SetError(0, WarnMsg, 0);
01093 
01094     return FALSE;
01095 }

The documentation for this class was generated from the following files:
Generated on Sat Nov 10 03:59:44 2007 for Camelot by  doxygen 1.4.4