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/*
* Item.h -- Header to access items' common state and functions.
*
* Authors : Patrick Lecoanet.
* Creation date :
*
* $Id$
*/
/*
* Copyright (c) 1996 1999 CENA, Patrick Lecoanet --
*
* This code is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This code 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this code; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef _Item_h
#define _Item_h
#include "PostScript.h"
#include "Attrs.h"
#include "List.h"
#include <X11/Xlib.h>
#define DEFAULT_TRACK_PRIORITY 5
#define DEFAULT_WAY_POINT_PRIORITY 4
#define DEFAULT_TABULAR_PRIORITY 3
#define DEFAULT_RECTANGLE_PRIORITY 2
#define DEFAULT_MULTI_POINT_PRIORITY 2
#define DEFAULT_ARC_PRIORITY 2
#define DEFAULT_RETICLE_PRIORITY 2
#define DEFAULT_MAP_PRIORITY 1
#define DEFAULT_GROUP_PRIORITY 0
#define DEFAULT_ICON_PRIORITY 2
#define DEFAULT_TEXT_PRIORITY 2
#define DEFAULT_MOSAIC_PRIORITY 0
#define DEFAULT_MARKER_SIZE 0
#define DEFAULT_VISIBLE_HISTORY_SIZE 6
#define DEFAULT_MANAGED_HISTORY_SIZE 6
#define DEFAULT_SPEED_VECTOR_LENGTH 3
#define DEFAULT_RETICLE_STEP_SIZE 80
#define DEFAULT_RETICLE_PERIOD 5
#define DEFAULT_LABEL_ANGLE 20
#define DEFAULT_LABEL_DISTANCE 50
#define DEFAULT_LINE_WIDTH 1
#define DEFAULT_TILE_SIZE 1
#define DEFAULT_ROW_COUNT 1
#define DEFAULT_COLUMN_COUNT 1
/*
* Item flags values.
*/
#define VISIBLE_BIT 1
#define SENSITIVE_BIT 2
#define ATOMIC_BIT 4
#define UPDATE_DEPENDENT_BIT 16
#define COMPOSE_SCALE_BIT 32
#define COMPOSE_ROTATION_BIT 64
/*
* Item record header --
*/
typedef struct _ItemStruct {
/* Private data */
int id;
ZnList tags;
struct _WidgetInfo *wi; /* The widget this item is on */
struct _ItemClassStruct *class; /* item class */
struct _ItemStruct *previous; /* previous item in group list */
struct _ItemStruct *next; /* next item in group list */
ZnBBox item_bounding_box; /* device item bounding box */
/* Common attributes */
unsigned char flags;
unsigned char part_sensitive; /* Currently limited to 8 parts per item */
short inv_flags;
struct _ItemStruct *parent;
int priority;
struct _ZnTransfo *transfo;
struct _ItemStruct *connected_item; /* Item this item is connected to */
} ItemStruct, *Item;
/*
* Group item special record.
*/
typedef struct _GroupItemStruct {
ItemStruct header;
/* Public data */
Item clip;
/* Private data */
Item head; /* Doubly linked list of all items. */
Item tail;
ZnList dependents; /* List of dependent items. */
#ifdef OM
/* Overlap manager variables.
* These variables are valid *only* if the overlap
* manager is active. */
ZnBool call_om; /* Tell if there is a need to call the */
/* overlap manager. */
#endif
} GroupItemStruct, *GroupItem;
/*
* Field array management record.
*/
typedef struct _FieldSetStruct {
struct _WidgetInfo *wi;
LabelFormat label_format;
unsigned int num_fields;
struct _FieldStruct *fields;
ZnDim label_width; /* Describe the label size. Access these */
ZnDim label_height; /* 2 only with GetLabelBBox. -1 means
* not up to date. */
ZnPoint label_pos; /* Describe the label origin. */
} FieldSetStruct, *FieldSet;
/*
* Item class record --
*/
typedef int (*ItemInitMethod)(Item item, int *argc, Arg **args);
typedef int (*ItemConfigureMethod)(Item item, int argc, ZnAttrList args,
int *flags);
typedef int (*ItemQueryMethod)(Item item, int argc, ZnAttrList args);
typedef void (*ItemCloneMethod)(Item item);
typedef void (*ItemDestroyMethod)(Item item);
typedef void (*ItemDrawMethod)(Item item);
typedef void (*ItemComputeCoordinatesMethod)(Item item, ZnBool force);
typedef int (*ItemToAreaMethod)(Item item, ZnBBox *area,
Tk_Uid tag_uid, int enclosed, ZnBool report);
typedef ZnBool (*ItemIsSensitiveMethod)(Item item, int part);
typedef double (*ItemPickMethod)(Item item, ZnPoint *point,
Item start_item, int aperture,
Item *a_item, int *a_part);
typedef FieldSet (*ItemGetFieldSetMethod)(Item item);
typedef void (*ItemGetAnchorMethod)(Item item, ZnAnchor anchor, ZnPoint *p);
typedef ZnBool (*ItemGetClipVerticesMethod)(Item item, ZnPoint **points,
int *num_points);
typedef int (*ItemCoordsMethod)(Item item, int index, int cmd,
ZnPoint **points, int *num_points);
typedef void (*ItemPostScriptMethod)(Item item, PostScriptInfo ps_info);
typedef struct _ItemClassStruct {
int item_size;
ZnBool has_fields;
ZnBool has_parts; /* True for items with parts
* other than fields. */
ZnBool has_anchors;
char *name;
ZnAttrConfig *attr_desc;
ItemInitMethod Init;
ItemCloneMethod Clone;
ItemDestroyMethod Destroy;
ItemConfigureMethod Configure;
ItemQueryMethod Query;
ItemGetFieldSetMethod GetFieldSet;
ItemGetAnchorMethod GetAnchor;
ItemGetClipVerticesMethod GetClipVertices;
ItemCoordsMethod Coords;
ItemComputeCoordinatesMethod ComputeCoordinates;
ItemToAreaMethod ToArea;
ItemDrawMethod Draw;
ItemIsSensitiveMethod IsSensitive;
ItemPickMethod Pick;
ItemPostScriptMethod PostScript;
} ItemClassStruct, *ItemClass;
/*
**********************************************************************************
*
* Generic methods for all items.
*
**********************************************************************************
*/
extern struct _ITEM {
Item (*CloneItem)(Item model);
void (*DestroyItem)(Item item);
int (*ConfigureItem)(Item item, int field, int argc, ZnAttrList args, ZnBool init);
int (*QueryItem)(Item item, int field, int argc, ZnAttrList args);
int (*AttributesInfo)(Item item, int field, int argc, Arg *args);
void (*SetFieldsAutoAlign)(Item item, int alignment);
void (*InsertItem)(Item item, Item group, Item mark_item, ZnBool before);
void (*UpdateItemPriority)(Item item, Item mark_item, ZnBool before);
void (*InsertDependentItem)(Item item);
void (*UpdateItemDependency)(Item item, Item old_connection);
void (*RemoveItem)(Item item);
void (*SetId)(Item item);
void (*FreeId)(Item item);
void (*AddTag)(Item item, Tk_Uid tag);
void (*RemoveTag)(Item item, Tk_Uid tag);
void (*FreeTags)(Item item);
void (*ResetTransfo)(Item item);
void (*SetTransfo)(Item item, struct _ZnTransfo *t);
void (*TranslateItem)(Item item, ZnReal tx, ZnReal ty);
void (*ScaleItem)(Item item, ZnReal sx, ZnReal sy);
void (*RotateItem)(Item item, ZnReal angle, ZnPoint *p);
void (*Invalidate)(Item item, int reason);
void (*InvalidateItems)(Item group, ItemClass item_class);
void (*ComposeItemTransform)(Item item, struct _ZnTransfo *current_t,
struct _ZnTransfo *new_t);
void (*GetTransform)(Item item, struct _ZnTransfo *t);
} ITEM;
/*
**********************************************************************************
*
* Methods defined in item.c useful for writing items.
*
**********************************************************************************
*/
extern struct _ITEM_P {
void (*GlobalModuleInit)();
Item (*CreateItem)(struct _WidgetInfo *wi, ItemClass item_class,
int *argc, Arg **args);
void (*AddItemClass)(ItemClass class);
ItemClass (*LookupItemClass)(char *class_name);
ZnList (*ItemClassList)();
void (*Damage)(struct _WidgetInfo *wi, ZnBBox *damage);
void (*Repair)(struct _WidgetInfo *wi);
void (*Update)(struct _WidgetInfo *wi);
int (*ConfigureAttributes)(char *record, int field, int argc, Arg *args, int *flags);
int (*QueryAttribute)(char *record, int field, Arg attr_name);
void (*InitFields)(FieldSet field_set);
void (*CloneFields)(FieldSet field_set);
void (*FreeFields)(FieldSet field_set);
void (*DrawFields)(FieldSet field_set);
int (*FieldsToArea)(FieldSet field_set, ZnBBox *area);
ZnBool (*IsFieldSensitive)(FieldSet field_set, int part);
double (*FieldsPick)(FieldSet field_set, ZnPoint *p, int *part);
void (*LeaderToLabel)(FieldSet field_set, ZnPoint *start, ZnPoint *end);
void (*GetLabelBBox)(FieldSet field_set, ZnDim *w, ZnDim *h);
void (*GetFieldBBox)(FieldSet field_set, unsigned int index, ZnBBox *field_bbox);
void (*ResetTransformStack)(struct _WidgetInfo *wi);
void (*ResetClipStack)(struct _WidgetInfo *wi);
} ITEM_P;
extern ZnItemClassId ZnArc;
extern ZnItemClassId ZnMap;
extern ZnItemClassId ZnTabular;
extern ZnItemClassId ZnMosaic;
extern ZnItemClassId ZnCurve;
extern ZnItemClassId ZnRectangle;
extern ZnItemClassId ZnReticle;
extern ZnItemClassId ZnTrack;
extern ZnItemClassId ZnWayPoint;
extern ZnItemClassId ZnGroup;
extern ZnItemClassId ZnIcon;
extern ZnItemClassId ZnText;
#endif /* _Item_h */
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