xpoilflt.h

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// $Id: xpoilflt.h 1282 2006-06-09 09:46:49Z alex $
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 */

// The module that controls the OIL side of plugin import/export filters.

#ifndef INC_XPOILFLT
#define INC_XPOILFLT

//#include "oilfltrs.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "xpfcaps.h"
#include "xmlutils.h"
#include "camprocess.h"

class PluginNativeFilter;

class PluginFilterProcess : public CamProcess
{
public:
    PluginFilterProcess(PluginNativeFilter* pFilter, CCLexFile* pInFile = NULL, CCLexFile* pOutFile = NULL);
    virtual ~PluginFilterProcess();

    // These are called to handle the various streams
    virtual void ProcessStdErr();

    BOOL ReportError();
    void ReportWarning();

protected:
    PluginNativeFilter* m_pFilter;
    wxArrayString m_Errors;
    wxArrayString m_Warnings;
};


/********************************************************************************************

>   class PluginOILFilter : public OILFilter

    Author:     Gerry_Iles (Xara Group Ltd) <camelotdev@xara.com>
    Created:    26/01/05
    Purpose:    This class is used to encapsulate the platform specific features of a filter.
                Every Filter object has a pointer to an OILFilter object.  For example, 
                under Windows, it holds the file extensions that this file understands.
    SeeAlso:    Filter

********************************************************************************************/

class PluginOILFilter : public OILFilter
{
    CC_DECLARE_MEMDUMP(PluginOILFilter);

public:
    PluginOILFilter(Filter *pFilter);

    // This function initialises the filter setting up the import and export flags, 
    // the filter name and file extension
    // The parameter will almost certainly need to change when OILFilter::CreatePluginFilters 
    // is implemented properly by scanning the installed filters
    BOOL Init( xmlNode* pFilterNode );

    BOOL IsImport() { return(m_bImport); }
    BOOL IsExport() { return(m_bExport); }

    // The import and export functions
    // The mechanism may need to be modified to efficiently launch processes and 
    // attach CCLexFile derived classes.
    // Currently GetExportFile is called first so it will only really support 
    // outputting the Xar data to a temporary location so that it can be sent to the 
    // filter's stdin when DoExport is called.
    // GetCapabilities doesn't really need the pFile parameter so it could be called 
    // before GetExportFile.
    // At the moment, the easiest thing to do would probably be to load and save the 
    // Xar data from temporary files and simply redirect stdin and stdout when running 
    // the filter
    // I expect this will involve far less work than trying to attach a CCFile to a 
    // external process though to handle the progress indication correctly, stderr will 
    // need to be attached to in such a way that the loop that waits for the process to 
    // exit can read the progress values from stderr and update the XaraLX progress system
    BOOL GetExportFile(PathName* pPath, CCLexFile** ppNewFile);
    BOOL GetCapabilities(CCLexFile* pFile, PathName* pPath, CapabilityTree* pCapTree);
    BOOL DoExport(CCLexFile* pXarFile, PathName* pPath);
    INT32 HowCompatible(PathName& FileName);
    BOOL GetImportFile(CCLexFile* pFile, CCLexFile** ppNewFile);

    void Cleanup();

protected:
//  This function is called from GetCapabilities to parse the XML
    BOOL BuildCapabilityTree(wxString strXML, CapabilityTree* pCapTree);

    // The functions from here down to CreateColourNode are all concerned with the
    // parsing of the XML and the creation of the CapabilityTree
    BOOL ReadOptions(xmlNodePtr pNode, CapabilityTree* pCapTree);
    BOOL ReadRasterise(xmlNodePtr pNode, CapabilityTree* pCapTree);
    BOOL ReadSpread(xmlNodePtr pNode, CapabilityTree* pCapTree);
    BOOL ReadObjects(xmlNodePtr pNode, CapabilityTree* pCapTree);
    BOOL ReadAttributes(xmlNodePtr pNode, CapabilityTree* pCapTree);
    BOOL ReadColour(xmlNodePtr pNode, CapabilityTree* pCapTree);

    BOOL GetConvertAsType(xmlNodePtr pNode, XPFConvertType* pValue);
    BOOL GetXPFBOOL(xmlNodePtr pNode, LPTSTR pAttrName, XPFBOOL* pbValue);
    BOOL GetXPFProp(xmlNodePtr pNode, LPTSTR pAttrName, PropMapEntry aMap[], XPFProp* pValue);
    XPFCapability* CreateObjectNode(xmlNodePtr pNode);
    XPFCapability* CreateAttributeNode(xmlNodePtr pNode);
    XPFCapability* CreateColourNode(xmlNodePtr pNode);

protected:
    BOOL m_bImport;
    BOOL m_bExport;

    wxString m_InternalName;    // Internal name for filter (used to build path for XML config)
    wxString m_PrepareExport;   // Command for PrepareExport
    wxString m_DoExport;        // Command for DoExport
    wxString m_CanImport;       // Command for CanImport
    wxString m_DoImport;        // Command for DoImport

    wxFileName m_XMLFile;       // Full path to filter XML config file for the current user
    PathName m_TempXarFile;     // Full path to temporary Xar file
};


class AutoCleanOILFilter
{
public:
    AutoCleanOILFilter(PluginOILFilter* pOILFilter) : m_pOILFilter(pOILFilter) {}
    ~AutoCleanOILFilter()
    {
        if (m_pOILFilter)
            m_pOILFilter->Cleanup();
    }

protected:
    PluginOILFilter* m_pOILFilter;
};


class PathNameListItem : public ListItem
{
public:
    CC_DECLARE_DYNAMIC( PathNameListItem )
    PathNameListItem(const PathName& Path)
    {
        m_Path = Path;
    }
    
    PathName m_Path;
};


#endif // INC_XPOILFLT

---