RNA_types.h

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/*
 * $Id: RNA_types.h 37295 2011-06-07 10:54:57Z campbellbarton $
 *
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * Contributor(s): Blender Foundation (2008).
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include "BLO_sys_types.h"

#ifndef RNA_TYPES_H
#define RNA_TYPES_H

#ifdef __cplusplus
extern "C" {
#endif

struct ParameterList;
struct FunctionRNA;
struct PropertyRNA;
struct EnumPropertyRNA;
struct StructRNA;
struct BlenderRNA;
struct IDProperty;
struct bContext;
struct Main;
struct ReportList;

typedef struct PointerRNA {
        struct {
                void *data;
        } id;

        struct StructRNA *type;
        void *data;
} PointerRNA;

typedef struct PropertyPointerRNA {
        PointerRNA ptr;
        struct PropertyRNA *prop;
} PropertyPointerRNA;

/* Property */

typedef enum PropertyType {
        PROP_BOOLEAN = 0,
        PROP_INT = 1,
        PROP_FLOAT = 2,
        PROP_STRING = 3,
        PROP_ENUM = 4,
        PROP_POINTER = 5,
        PROP_COLLECTION = 6
} PropertyType;

/* also update rna_property_subtype_unit when you change this */
typedef enum PropertyUnit {
        PROP_UNIT_NONE = (0<<16),
        PROP_UNIT_LENGTH = (1<<16),                     /* m */
        PROP_UNIT_AREA = (2<<16),                       /* m^2 */
        PROP_UNIT_VOLUME = (3<<16),                     /* m^3 */
        PROP_UNIT_MASS = (4<<16),                       /* kg */
        PROP_UNIT_ROTATION = (5<<16),           /* radians */
        PROP_UNIT_TIME = (6<<16),                       /* frame */
        PROP_UNIT_VELOCITY = (7<<16),           /* m/s */
        PROP_UNIT_ACCELERATION = (8<<16)        /* m/(s^2) */
} PropertyUnit;

#define RNA_SUBTYPE_UNIT(subtype) ((subtype) & 0x00FF0000)
#define RNA_SUBTYPE_VALUE(subtype) ((subtype) & ~0x00FF0000)
#define RNA_SUBTYPE_UNIT_VALUE(subtype) ((subtype)>>16)

#define RNA_ENUM_BITFLAG_SIZE 32

/* also update enums in bpy_props.c when adding items here */
typedef enum PropertySubType {
        PROP_NONE = 0,

        /* strings */
        PROP_FILEPATH = 1,
        PROP_DIRPATH = 2,
        PROP_FILENAME = 3,

        /* numbers */
        PROP_UNSIGNED = 13,
        PROP_PERCENTAGE = 14,
        PROP_FACTOR = 15,
        PROP_ANGLE = 16|PROP_UNIT_ROTATION,
        PROP_TIME = 17|PROP_UNIT_TIME,
        PROP_DISTANCE = 18|PROP_UNIT_LENGTH,

        /* number arrays */
        PROP_COLOR = 20,
        PROP_TRANSLATION = 21|PROP_UNIT_LENGTH,
        PROP_DIRECTION = 22,
        PROP_VELOCITY = 23|PROP_UNIT_VELOCITY,
        PROP_ACCELERATION = 24|PROP_UNIT_ACCELERATION,
        PROP_MATRIX = 25,
        PROP_EULER = 26|PROP_UNIT_ROTATION,
        PROP_QUATERNION = 27,
        PROP_AXISANGLE = 28,
        PROP_XYZ = 29,
        PROP_XYZ_LENGTH = 29|PROP_UNIT_LENGTH,
        PROP_COLOR_GAMMA = 30,
        PROP_COORDS = 31, /* generic array, no units applied, only that x/y/z/w are used (python vec) */

        /* booleans */
        PROP_LAYER = 40,
        PROP_LAYER_MEMBER = 41
} PropertySubType;

/* Make sure enums are updated with thses */
typedef enum PropertyFlag {
        /* editable means the property is editable in the user
         * interface, properties are editable by default except
         * for pointers and collections. */
        PROP_EDITABLE = 1<<0,

        /* this property is editable even if it is lib linked,
         * meaning it will get lost on reload, but it's useful
         * for editing. */
        PROP_LIB_EXCEPTION = 1<<16,

        /* animateable means the property can be driven by some
         * other input, be it animation curves, expressions, ..
         * properties are animateable by default except for pointers
         * and collections */
        PROP_ANIMATABLE = 1<<1,

        /* icon */
        PROP_ICONS_CONSECUTIVE = 1<<12,

        /* hidden in  the user interface */
        PROP_HIDDEN = 1<<19,
        /* do not write in presets */
        PROP_SKIP_SAVE = 1<<28,

        /* function paramater flags */
        PROP_REQUIRED = 1<<2,
        PROP_OUTPUT = 1<<3,
        PROP_RNAPTR = 1<<11,
        /* registering */
        PROP_REGISTER = 1<<4,
        PROP_REGISTER_OPTIONAL = (1<<4)|(1<<5),

        /* pointers */
        PROP_ID_REFCOUNT = 1<<6,

        /* disallow assigning a variable to its self, eg an object tracking its self
         * only apply this to types that are derived from an ID ()*/
        PROP_ID_SELF_CHECK = 1<<20,
        PROP_NEVER_NULL = 1<<18,
        /* currently only used for UI, this is similar to PROP_NEVER_NULL
         * except that the value may be NULL at times, used for ObData, where an Empty's will be NULL
         * but setting NULL on a mesh object is not possible. So, if its not NULL, setting NULL cant be done! */
        PROP_NEVER_UNLINK = 1<<25,

        /* flag contains multiple enums.
         * note: not to be confused with prop->enumbitflags
         * this exposes the flag as multiple options in python and the UI.
         *
         * note: these can't be animated so use with care.
          */
        PROP_ENUM_FLAG = 1<<21,

        /* need context for update function */
        PROP_CONTEXT_UPDATE = 1<<22,
        PROP_CONTEXT_PROPERTY_UPDATE = (1<<22)|(1<<27),

        /* Use for arrays or for any data that should not have a referene kept
         * most common case is functions that return arrays where the array */
        PROP_THICK_WRAP = 1<<23,

        /* Reject values outside limits, use for python api only so far
         * this is for use when silently clamping string length will give
         * bad behavior later. Could also enforce this for INT's and other types.
         * note: currently no support for function arguments or non utf8 paths (filepaths) */
        PROP_NEVER_CLAMP = 1<<26,

        /* internal flags */
        PROP_BUILTIN = 1<<7,
        PROP_EXPORT = 1<<8,
        PROP_RUNTIME = 1<<9,
        PROP_IDPROPERTY = 1<<10,
        PROP_RAW_ACCESS = 1<<13,
        PROP_RAW_ARRAY = 1<<14,
        PROP_FREE_POINTERS = 1<<15,
        PROP_DYNAMIC = 1<<17, /* for dynamic arrays, and retvals of type string */
        PROP_ENUM_NO_CONTEXT = 1<<24 /* for enum that shouldn't be contextual */
} PropertyFlag;

typedef struct CollectionPropertyIterator {
        /* internal */
        PointerRNA parent;
        PointerRNA builtin_parent;
        struct PropertyRNA *prop;
        void *internal;
        int idprop;
        int level;

        /* external */
        int valid;
        PointerRNA ptr;
} CollectionPropertyIterator;

typedef struct CollectionPointerLink {
        struct CollectionPointerLink *next, *prev;
        PointerRNA ptr;
} CollectionPointerLink;

typedef enum RawPropertyType {
        PROP_RAW_UNSET=-1,
        PROP_RAW_INT, // XXX - abused for types that are not set, eg. MFace.verts, needs fixing.
        PROP_RAW_SHORT,
        PROP_RAW_CHAR,
        PROP_RAW_DOUBLE,
        PROP_RAW_FLOAT
} RawPropertyType;

typedef struct RawArray {
        void *array;
        RawPropertyType type;
        int len;
        int stride;
} RawArray;

typedef struct EnumPropertyItem {
        int value;
        const char *identifier;
        int icon;
        const char *name;
        const char *description;
} EnumPropertyItem;

/* this is a copy of 'PropEnumItemFunc' defined in rna_internal_types.h */
typedef EnumPropertyItem *(*EnumPropertyItemFunc)(struct bContext *C, PointerRNA *ptr, struct PropertyRNA *prop, int *free);

typedef struct PropertyRNA PropertyRNA;

/* Parameter List */

typedef struct ParameterList {
        /* storage for parameters */
        void *data;

        /* store the parameter size */
        int alloc_size;

        int arg_count, ret_count;

        /* function passed at creation time */
        struct FunctionRNA *func;
} ParameterList;

typedef struct ParameterIterator {
        struct ParameterList *parms;
        PointerRNA funcptr;
        void *data;
        int size, offset;

        PropertyRNA *parm;
        int valid;
} ParameterIterator;

/* mainly to avoid confusing casts */
typedef struct ParameterDynAlloc {
        intptr_t array_tot; /* important, this breaks when set to an int */
        void *array;
} ParameterDynAlloc;

/* Function */

typedef enum FunctionFlag {
        FUNC_NO_SELF = 1, /* for static functions */
        FUNC_USE_CONTEXT = 2,
        FUNC_USE_REPORTS = 4,
        FUNC_USE_SELF_ID = 2048,

        /* registering */
        FUNC_REGISTER = 8,
        FUNC_REGISTER_OPTIONAL = 8|16,

        /* internal flags */
        FUNC_BUILTIN = 128,
        FUNC_EXPORT = 256,
        FUNC_RUNTIME = 512,
        FUNC_FREE_POINTERS = 1024
} FunctionFlag;

typedef void (*CallFunc)(struct bContext *C, struct ReportList *reports, PointerRNA *ptr, ParameterList *parms);

typedef struct FunctionRNA FunctionRNA;

/* Struct */

typedef enum StructFlag {
        /* indicates that this struct is an ID struct, and to use refcounting */
        STRUCT_ID = 1,
        STRUCT_ID_REFCOUNT = 2,

        /* internal flags */
        STRUCT_RUNTIME = 4,
        STRUCT_GENERATED = 8,
        STRUCT_FREE_POINTERS = 16,
        STRUCT_NO_IDPROPERTIES = 32 /* Menu's and Panels don't need properties */
} StructFlag;

typedef int (*StructValidateFunc)(struct PointerRNA *ptr, void *data, int *have_function);
typedef int (*StructCallbackFunc)(struct bContext *C, struct PointerRNA *ptr, struct FunctionRNA *func, ParameterList *list);
typedef void (*StructFreeFunc)(void *data);
typedef struct StructRNA *(*StructRegisterFunc)(struct Main *bmain, struct ReportList *reports, void *data,
        const char *identifier, StructValidateFunc validate, StructCallbackFunc call, StructFreeFunc free);
typedef void (*StructUnregisterFunc)(struct Main *bmain, struct StructRNA *type);
typedef void **(*StructInstanceFunc)(PointerRNA *ptr);

typedef struct StructRNA StructRNA;

/* Blender RNA
 *
 * Root RNA data structure that lists all struct types. */

typedef struct BlenderRNA BlenderRNA;

/* Extending
 *
 * This struct must be embedded in *Type structs in
 * order to make then definable through RNA. */

typedef struct ExtensionRNA {
        void *data;
        StructRNA *srna;
        StructCallbackFunc call;
        StructFreeFunc free;
        
} ExtensionRNA;

#ifdef __cplusplus
}
#endif

#endif /* RNA_TYPES_H */