PRM/DS_ParmReader.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * Produced by:
 *      Vincent Ma
 *      Side Effects Software Inc
 *      477 Richmond Street West
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 *
 * NAME:        DS_ParmReader.h ( PRM Library, C++ )
 *
 * COMMENTS:    Generic parameter reader for the generation of dialog scripts
 *              for script shaders
 */

#ifndef __DS_ParmReader__
#define __DS_ParmReader__

#include "PRM_API.h"
#include <UT/UT_PtrArray.h>
#include <UT/UT_String.h>
#include "PRM_Type.h"
#include <CH/CH_ExprLanguage.h>

class UT_StringArray;

class PRM_Range;

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

class PRM_API DS_DefaultValue
{
public:

                         DS_DefaultValue( const float *fp, int size );
                         DS_DefaultValue( const int *ip, int size );
                         DS_DefaultValue( const char *sp[],
                                          const CH_StringMeaning *meanings,
                                          int size );
                         DS_DefaultValue(const UT_FloatArray &values);
                         DS_DefaultValue(const UT_IntArray &values);
                         DS_DefaultValue(const UT_StringArray &values,
                                         const CH_StringMeaning *meaning);

                        ~DS_DefaultValue();

    int                  copy( const float *fp, int size );
    int                  copy( const int *ip, int size );
    int                  copy( const char *sp[],
                                const CH_StringMeaning *meanings,
                                int size);
    int                  copy( const UT_IntArray &v);
    int                  copy( const UT_FloatArray &v);
    int                  copy( const UT_StringArray &v,
                                const CH_StringMeaning *meanings);

    float               *getFloat()     const     { return myFloat; }
    int                 *getInteger()   const     { return myInteger; }
    const char          *getString(int idx) const { return myStrings[idx]; }
    CH_StringMeaning     getStringMeaning(int idx) const
                                            { return myStringMeanings[idx]; }

    int                  getSize()      const   { return mySize; };

private:
    void                 initZero();
    void                 cleanup();

    float        *myFloat;
    int          *myInteger;
    char        **myStrings;
    CH_StringMeaning *myStringMeanings;

    int           mySize;
};

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

class PRM_API DS_MenuChoice {
public:
     DS_MenuChoice( const char *value, const char *label)
        : myValue( 0 ),
          myLabel( 0 )
        {
            if ( value ) myValue = ::strdup( value );
            if ( label ) myLabel = ::strdup( label );
        };
    ~DS_MenuChoice()
        {
            if ( myValue ) ::free( myValue );
            if ( myLabel ) ::free( myLabel );
        };

    const char                  *getValue()     const   { return myValue; }
    const char                  *getLabel()     const   { return myLabel; }

private:
    char        *myValue;
    char        *myLabel;
};

class PRM_API DS_AttributeValue {
public:
    DS_AttributeValue(const char *token, const char *value)
        : myToken(0), myValue(0)
        {
            if (token) myToken = ::strdup(token);
            if (value) myValue = ::strdup(value);
        }
    ~DS_AttributeValue()
        {
            if (myToken) ::free(myToken);
            if (myValue) ::free(myValue);
        }

    const char                  *getToken()     const   { return myToken; }
    const char                  *getValue()     const   { return myValue; }

private:
    char        *myToken;
    char        *myValue;
};

class PRM_API DS_HandleBinding {
public:
    DS_HandleBinding(const char *channelname, const char *type,
                     const char *desc, const char *label,
                     const char *default_settings)
        : myChannelName(0), myType(0), myDesc(0), myLabel(0)
        {
            if (channelname) myChannelName = ::strdup(channelname);
            if (type) myType = ::strdup(type);
            if (desc) myDesc = ::strdup(desc);
            if (label) myLabel = ::strdup(label);
            if (default_settings)
                myDefaultSettings = ::strdup(default_settings);
        }
    ~DS_HandleBinding()
        {
            if (myChannelName) ::free(myChannelName);
            if (myType) ::free(myType);
            if (myDesc) ::free(myDesc);
            if (myLabel) ::free(myLabel);
            if (myDefaultSettings) ::free(myDefaultSettings);
        }

    const char  *getChannelName() const         { return myChannelName; }
    const char  *getType() const                { return myType; }
    const char  *getDesc() const                { return myDesc; }
    const char  *getLabel() const               { return myLabel; }
    const char  *getDefaultSettings() const     { return myDefaultSettings; }

private:
    char        *myChannelName, *myType, *myDesc, *myLabel, *myDefaultSettings;
};

class PRM_API DS_SelectorBinding {
public:
    DS_SelectorBinding(const char *parm_name,
                        const char *type, const char *prompt, const char *desc,
                        const char *mask, int dragging,
                        const char *menu, int asterisk,
                        int input_index=-1, int input_required=0)
        : myParmName(0), myType(0), myDesc(0), myPrompt(0), myMask(0), myMenu(0)
    {
        myDragging = dragging;
        myAsterisk = asterisk;
        myInputIndex = input_index;
        myInputRequired = input_required;
        if (parm_name)  myParmName = ::strdup(parm_name);
        if (type)       myType = ::strdup(type);
        if (prompt)     myPrompt = ::strdup(prompt);
        if (desc)       myDesc = ::strdup(desc);
        if (mask)       myMask = ::strdup(mask);
        if (menu)       myMenu = ::strdup(menu);
    }
    ~DS_SelectorBinding()
    {
        if (myParmName) ::free(myParmName);
        if (myType)     ::free(myType);
        if (myPrompt)   ::free(myPrompt);
        if (myDesc)     ::free(myDesc);
        if (myMenu)     ::free(myMenu);
        if (myMask)     ::free(myMask);
    }

    const char  *getParmName() const            { return myParmName; }
    const char  *getType() const                { return myType; }
    const char  *getPrompt() const              { return myPrompt; }
    const char  *getDesc() const                { return myDesc; }
    const char  *getPrimMask() const            { return myMask; }
    int          getDragging() const            { return myDragging; }
    const char  *getMenu() const                { return myMenu; }
    int          getAsterisk() const            { return myAsterisk; }
    int          getInputIndex() const          { return myInputIndex; }
    int          getInputRequired() const       { return myInputRequired; }

private:
    char        *myParmName, *myType, *myPrompt, *myDesc, *myMask, *myMenu;
    int          myDragging, myAsterisk;
    int          myInputIndex, myInputRequired;
};

class PRM_API DS_DisableInfo
{
public:
     DS_DisableInfo() {}
    ~DS_DisableInfo();

    void        addInfo(char *parm, char *value)
                { myControlParm.append(  ::strdup(parm) );
                  myControlValue.append( ::strdup(value) ); }

    UT_PtrArray<char *>         myControlParm;
    UT_PtrArray<char *>         myControlValue;
};

typedef UT_PtrArray< DS_MenuChoice * > DS_Menu;
typedef UT_PtrArray< DS_AttributeValue * > DS_AttributeList;
typedef UT_PtrArray< DS_HandleBinding * > DS_HandleList;
typedef UT_PtrArray< DS_SelectorBinding * > DS_SelectorList;
typedef UT_PtrArray< DS_DisableInfo * > DS_DisableList;

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

class PRM_API DS_ParmInfo
{
public:
     DS_ParmInfo( const char *token );
    ~DS_ParmInfo();

    void        addHelpText(const char *text);

    UT_String            myToken;       // Actual parm name
    UT_String            myLabel;
    UT_String            myCallback;
    UT_String            myHelpText;
    UT_String            myRenderManType;
    UT_String            myOpFilter;
    PRM_Type             myType;
    PRM_MultiType        myMultiType;
    unsigned             myFlag;
    int                  myToolbox;

    UT_String            myGroup;
    UT_String            myMenuScript;
    DS_Menu              myMenu;
    int                  myMenuType;
    DS_AttributeList     myAttributes;
    DS_HandleList        myHandles;
    DS_SelectorBinding  *mySelector;
 
    unsigned int         mySize;        // Vector size (1, 3, 4, 9, 16, etc.)
    DS_DefaultValue     *myDefault;
    PRM_Range           *myRange;

    DS_DisableList       myDisableInfo;
    UT_String            myDisableWhen; // New style (with {})

    bool         setTypeByToken( const char *token );
    const char  *getTypeToken() const;
    bool         isInvisible() const;

    void         setLogarithmic(bool flag);
    bool         isLogarithmic() const;

    // Arrays get translated into multi-parms
    bool         getIsArray() const     { return myIsArray; }
    void         setIsArray(bool f)     { myIsArray = f; }

    void         setFlag( unsigned flag )       { myFlag |= flag; }
    void         clearFlag( unsigned flag = (unsigned)-1 ){ myFlag &= ~flag; }
    unsigned     getFlag( unsigned flag ) const { return myFlag & flag; }
private:
    bool                 myIsArray;     // Represented as a multi-parm
};

typedef UT_PtrArray<DS_ParmInfo*>       DS_ParmInfoList;

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

class PRM_API DS_ParmReader
{
public:

    // the constructor expects the parms "d:g:cl"
             DS_ParmReader( unsigned doGroups = 0,
                            unsigned color = 0,
                            unsigned lightChan = 1 );
    virtual ~DS_ParmReader();

    virtual const char  *getClassName() const;

    // File IO
    // all return 0 to indicate error
    virtual int          open( const char *fileName ) = 0;
    virtual void         close() = 0;

    // parse will read the given script file, and extract information on
    // the parameters that are present in the script.
    // parse will return the number of parameters it has successfully found.
    // returns 0 to indicate error
    virtual int          parse() = 0;

    // The following must be filled out by derived classes.
    // NAME and LABEL provide the name(s) for the scripted function.
    // HELP is the help messages that were included in the script to be
    // displayed in the UI to aid the user
    virtual const char  *getScriptTypeName() = 0;
    virtual const char  *getScriptName() = 0;
    virtual const char  *getScriptLabel() = 0;
    virtual const char  *getScriptHelp() = 0;
    virtual const char  *getScriptInfo() = 0;
    virtual const char  *getInputLabel(int /*idx*/)     { return ""; }
    virtual const char  *getRenderMask()        { return ""; }

    // returns the number of parms the reader found from the script
    int                  numParms()     { return myParms.entries(); }

    // given an index, return the information on the index'th parm
    // return 0 to indicate error
    virtual DS_ParmInfo *getParmInfo( const int index );

    // let others know if we care about grouping of params
    int                  isDoingGroups() const  { return myDoGroups; }
    void                 setGroupSize(int g)    { myGroupSize = g; }
    int                  getGroupSize() const   { return myGroupSize; }
    UT_StringList       &getGroups()            { return myGroups; }
    DS_SelectorList     &getUnboundSelectors()  { return myUnboundSelectors; }
    DS_SelectorList     &getReservedSelectors() { return myReservedSelectors; }
    DS_HandleList       &getReservedHandles()   { return myReservedHandles; }
    DS_HandleList       &getBoundHandles()      { return myBoundHandles; }

protected:
    DS_ParmInfoList              myParms;
    UT_StringList                myGroups;
    DS_SelectorList              myUnboundSelectors;
    DS_SelectorList              myReservedSelectors;
    DS_HandleList                myReservedHandles;
    DS_HandleList                myBoundHandles;

    short                        myDoGroups;
    short                        myGroupSize;
    short                        myColorFlag;
    short                        myLightChan;
};

#endif

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