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BrTreeP.h

/*
 * $XConsortium: TreeP.h,v 1.13 90/04/13 16:39:54 jim Exp $
 *
 * Copyright 1990 Massachusetts Institute of Technology
 * Copyright 1989 Prentice Hall
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose and without fee is hereby granted, provided that the above
 * copyright notice appear in all copies and that both the copyright notice
 * and this permission notice appear in supporting documentation.
 * 
 * M.I.T., Prentice Hall and the authors disclaim all warranties with regard
 * to this software, including all implied warranties of merchantability and
 * fitness.  In no event shall M.I.T., Prentice Hall or the authors be liable
 * for any special, indirect or cosequential damages or any damages whatsoever
 * resulting from loss of use, data or profits, whether in an action of
 * contract, negligence or other tortious action, arising out of or in
 * connection with the use or performance of this software.
 * 
 * Authors:  Jim Fulton, MIT X Consortium,
 *           based on a version by Douglas Young, Prentice Hall
 * 
 * This widget is based on the Tree widget described on pages 397-419 of
 * Douglas Young's book "The X Window System, Programming and Applications 
 * with Xt OSF/Motif Edition."  The layout code has been rewritten to use
 * additional blank space to make the structure of the graph easier to see
 * as well as to support vertical trees.
 *
 * 6.10.95 D.P. : Adding upper brother of tree elements
 */


#ifndef _XbrTreeP_h
#define _XbrTreeP_h

#include "BrTree.h"

typedef struct _BrTreeClassPart {
    int ignore;
} BrTreeClassPart;

typedef struct _BrTreeClassRec {
    CoreClassPart core_class;
    CompositeClassPart composite_class;
    ConstraintClassPart constraint_class;
    BrTreeClassPart tree_class;
} BrTreeClassRec;

extern BrTreeClassRec brTreeClassRec;

typedef struct {
    /* fields available through resources */
    Dimension hpad;                 /* hSpace/HSpace */
    Dimension vpad;                 /* vSpace/VSpace */
    Dimension line_width;           /* lineWidth/LineWidth */
    Pixel foreground;               /* foreground/Foreground */
    XtGravity gravity;              /* gravity/Gravity */
    Boolean auto_reconfigure;       /* autoReconfigure/AutoReconfigure */
    /* private fields */
    GC gc;                    /* used to draw lines */
    Widget tree_root;               /* hidden root off all children */
    Dimension *largest;             /* list of largest per depth */
    int n_largest;                  /* number of elements in largest */
    Dimension maxwidth, maxheight;  /* for shrink wrapping */
} BrTreePart;


typedef struct _BrTreeRec {
    CorePart core;
    CompositePart composite;
    ConstraintPart constraint;
    BrTreePart tree;
}  BrTreeRec;


/*
 * structure attached to all children
 */
typedef struct _BrTreeConstraintsPart {
    /* resources */
    Widget parent;                  /* treeParent/TreeParent */
    Widget brother;                 /* treeBrother/TreeBrother */
    GC gc;                    /* treeGC/TreeGC */
    Widget *children;
    /* private data */
    int n_children;
    int max_children;
    Dimension bbsubwidth, bbsubheight;    /* bounding box of sub tree */
    Dimension bbwidth, bbheight;    /* bounding box including node */
    Position x, y;
} BrTreeConstraintsPart;

typedef struct _BrTreeConstraintsRec {
   BrTreeConstraintsPart tree;
} BrTreeConstraintsRec, *BrTreeConstraints;


/*
 * useful macros
 */

#define TREE_CONSTRAINT(w) \
                   ((BrTreeConstraints)((w)->core.constraints))

#define TREE_INITIAL_DEPTH 10       /* for allocating largest array */
#define TREE_HORIZONTAL_DEFAULT_SPACING 20
#define TREE_VERTICAL_DEFAULT_SPACING 6

#endif /* _XbrTreeP_h */




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