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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 "Types.h"
#include "List.h"
#include "Field.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_CURVE_PRIORITY 2
#define DEFAULT_BEZIER_PRIORITY 2
#define DEFAULT_TRIANGLES_PRIORITY 2
#define DEFAULT_ARC_PRIORITY 2
#define DEFAULT_RETICLE_PRIORITY 2
#define DEFAULT_MAP_PRIORITY 1
#define DEFAULT_GROUP_PRIORITY 6
#define DEFAULT_ICON_PRIORITY 2
#define DEFAULT_TEXT_PRIORITY 2
#define DEFAULT_WINDOW_PRIORITY 0 /* N/A */
#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
#define DEFAULT_LABEL_PREFERRED_ANGLE 0
#define DEFAULT_CONVERGENCE_STYLE 0
/*
* 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
#define COMPOSE_ALPHA_BIT 128
struct _WidgetInfo;
struct _ZnTransfo;
/*
* 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 short flags;
unsigned short part_sensitive; /* Currently limited to 16 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;
typedef struct _ToAreaStruct {
Tk_Uid tag_uid;
ZnBool enclosed;
Item in_group;
ZnBool report;
ZnBool recursive;
ZnBBox *area;
} ZnToAreaStruct, *ZnToArea;
typedef struct _PickStruct {
int aperture;
Item in_group;
Item start_item;
ZnBool recursive;
ZnPoint *point;
Item a_item;
int a_part;
} ZnPickStruct, *ZnPick;
/*
* Item class record --
*/
typedef int (*ItemInitMethod)(Item item, int *argc, Tcl_Obj *CONST *args[]);
typedef int (*ItemConfigureMethod)(Item item, int argc, Tcl_Obj *CONST args[],
int *flags);
typedef int (*ItemQueryMethod)(Item item, int argc, Tcl_Obj *CONST args[]);
typedef void (*ItemCloneMethod)(Item item);
typedef void (*ItemDestroyMethod)(Item item);
typedef void (*ItemDrawMethod)(Item item);
typedef void (*ItemRenderMethod)(Item item);
typedef void (*ItemComputeCoordinatesMethod)(Item item, ZnBool force);
typedef int (*ItemToAreaMethod)(Item item, ZnToArea ta);
typedef double (*ItemPickMethod)(Item item, ZnPick ps);
typedef ZnBool (*ItemIsSensitiveMethod)(Item item, int part);
typedef struct _FieldSetStruct* (*ItemGetFieldSetMethod)(Item item);
typedef int (*ItemContourMethod)(Item item, int cmd, ZnPoly *poly);
typedef void (*ItemPickVertexMethod)(Item item, ZnPoint *p, int *contour,
int *vertex, int *o_vertex);
typedef void (*ItemGetAnchorMethod)(Item item, ZnAnchor anchor, ZnPoint *p);
typedef ZnBool (*ItemGetClipVerticesMethod)(Item item, ZnTriStrip *tristrip);
typedef ZnBool (*ItemGetContoursMethod)(Item item, ZnPoly *poly);
typedef int (*ItemCoordsMethod)(Item item, int contour, int index, int cmd,
ZnPoint **points, int *num_points);
typedef void (*ItemInsertCharsMethod)(Item item, int field, int *index,
char *chars);
typedef void (*ItemDeleteCharsMethod)(Item item, int field, int *first,
int *last);
typedef void (*ItemCursorMethod)(Item item, int field, int index);
typedef int (*ItemIndexMethod)(Item item, int field, Tcl_Obj *index_spec,
int *index);
typedef int (*ItemPartMethod)(Item item, Tcl_Obj **part_spec, int *part);
typedef int (*ItemSelectionMethod)(Item item, int field, int offset,
char *chars, int max_chars);
typedef void (*ItemPostScriptMethod)(Item item, PostScriptInfo ps_info);
typedef struct _ItemClassStruct {
int size;
int num_parts; /* 0 if no special parts, else
* gives how many parts exist. */
ZnBool has_anchors; /* 1 if anchors are supported */
char *name;
ZnAttrConfig *attr_desc;
ItemInitMethod Init;
ItemCloneMethod Clone;
ItemDestroyMethod Destroy;
ItemConfigureMethod Configure;
ItemQueryMethod Query;
ItemGetFieldSetMethod GetFieldSet;
ItemGetAnchorMethod GetAnchor;
ItemGetClipVerticesMethod GetClipVertices;
ItemGetContoursMethod GetContours;
ItemCoordsMethod Coords;
ItemInsertCharsMethod InsertChars;
ItemDeleteCharsMethod DeleteChars;
ItemCursorMethod Cursor;
ItemIndexMethod Index;
ItemPartMethod Part;
ItemSelectionMethod Selection;
ItemContourMethod Contour;
ItemComputeCoordinatesMethod ComputeCoordinates;
ItemToAreaMethod ToArea;
ItemDrawMethod Draw;
ItemRenderMethod Render;
ItemIsSensitiveMethod IsSensitive;
ItemPickMethod Pick;
ItemPickVertexMethod PickVertex;
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, Tcl_Obj *CONST args[],
ZnBool init);
int (*QueryItem)(Item item, int field, int argc, Tcl_Obj *CONST args[]);
void (*InsertItem)(Item item, Item group, Item mark_item, ZnBool before);
void (*UpdateItemPriority)(Item item, Item mark_item, ZnBool before);
void (*UpdateItemDependency)(Item item, Item old_connection);
void (*ExtractItem)(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);
ZnBool (*HasTag)(Item item, Tk_Uid tag);
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 (*GetItemTransform)(Item item, struct _ZnTransfo *t);
} ITEM;
/*
**********************************************************************************
*
* Methods defined in item.c useful for writing items.
*
**********************************************************************************
*/
void ZnItemInit();
Item ZnCreateItem(struct _WidgetInfo *wi, ItemClass item_class,
int *argc, Tcl_Obj *CONST *args[]);
void ZnAddItemClass(ItemClass class);
ItemClass ZnLookupItemClass(char *class_name);
ZnList ZnItemClassList();
int ZnConfigureAttributes(struct _WidgetInfo *wi, void *record,
ZnAttrConfig *attr_desc, int argc, Tcl_Obj *CONST args[],
int *flags);
int ZnAttributesInfo(struct _WidgetInfo *wi, void *record,
ZnAttrConfig *attr_desc, int argc, Tcl_Obj *CONST args[]);
int ZnQueryAttribute(struct _WidgetInfo *wi, void *record, ZnAttrConfig *attr_desc,
Tcl_Obj *attr_name);
void ZnInitTransformStack(struct _WidgetInfo *wi);
void ZnFreeTransformStack(struct _WidgetInfo *wi);
void ZnResetTransformStack(struct _WidgetInfo *wi);
void ZnPushTransform(struct _WidgetInfo *wi, struct _ZnTransfo *transfo,
ZnBool compose_scale, ZnBool compose_rot);
void ZnPopTransform(struct _WidgetInfo *wi);
void ZnInitClipStack(struct _WidgetInfo *wi);
void ZnFreeClipStack(struct _WidgetInfo *wi);
void ZnResetClipStack(struct _WidgetInfo *wi);
void ZnPushClip(struct _WidgetInfo *wi, ZnTriStrip *tristrip, ZnBool simple,
ZnBool set_gc);
void ZnPopClip(struct _WidgetInfo *wi, ZnBool set_gc);
ZnBool ZnCurrentClip(struct _WidgetInfo *wi, Region *reg, ZnBBox **clip_box,
ZnBool *simple);
extern ZnItemClassId ZnArc;
extern ZnItemClassId ZnMap;
extern ZnItemClassId ZnTabular;
extern ZnItemClassId ZnMosaic;
extern ZnItemClassId ZnCurve;
extern ZnItemClassId ZnBezier;
extern ZnItemClassId ZnTriangles;
extern ZnItemClassId ZnRectangle;
extern ZnItemClassId ZnReticle;
extern ZnItemClassId ZnTrack;
extern ZnItemClassId ZnWayPoint;
extern ZnItemClassId ZnGroup;
extern ZnItemClassId ZnIcon;
extern ZnItemClassId ZnText;
extern ZnItemClassId ZnWind;
#endif /* _Item_h */
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