xref: /xsrc/external/mit/libXaw/dist/include/X11/Xaw/FormP.h

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Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Digital not be
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******************************************************************/

/* Form widget private definitions */

#ifndef _XawFormP_h
#define _XawFormP_h

#include <X11/Xfuncproto.h>

#include <X11/Xaw/Form.h>
#include <X11/Xaw/XawInit.h>

_XFUNCPROTOBEGIN

#define XtREdgeType "EdgeType"

typedef enum {
    LayoutPending,
    LayoutInProgress,
    LayoutDone
} LayoutState;

#define XtInheritLayout							\
((Boolean (*)(FormWidget, unsigned int, unsigned int, Bool))_XtInherit)

typedef struct {
    Boolean(*layout)(FormWidget, unsigned int, unsigned int, Bool);
#ifndef OLDXAW
    XtPointer extension;
#endif
} FormClassPart;

typedef struct _FormClassRec {
    CoreClassPart	core_class;
    CompositeClassPart	composite_class;
    ConstraintClassPart	constraint_class;
    FormClassPart	form_class;
} FormClassRec;

extern FormClassRec formClassRec;

typedef struct _FormPart {
    /* resources */
    int		default_spacing;    /* default distance between children */

    /* private */
    Dimension	old_width, old_height; /* reference value for *_virtual  */
    int		no_refigure;	    /* no re-layout while > 0		 */
    Boolean	needs_relayout;	    /* next time no_refigure == 0	 */
    Boolean	resize_in_layout;   /* should layout() do geom request?  */
    Dimension	preferred_width, preferred_height; /* cached from layout */
    Boolean	resize_is_no_op;    /* Causes resize to take not action  */
#ifndef OLDXAW
    XawDisplayList *display_list;
    XtPointer pad[4];	/* for future use and keep binary compatibility */
#endif
} FormPart;

typedef struct _FormRec {
    CorePart		core;
    CompositePart	composite;
    ConstraintPart	constraint;
    FormPart		form;
} FormRec;

typedef struct _FormConstraintsPart {
    /* resources */
    XtEdgeType top, bottom, left, right;/* where to drag edge on resize */
    int		dx;		/* desired horiz offset			*/
    int		dy;		/* desired vertical offset		*/
    Widget	horiz_base;	/* measure dx from here if non-null	*/
    Widget	vert_base;	/* measure dy from here if non-null	*/
    Boolean	allow_resize;	/* True if child may request resize	*/

    /* private */
    short	virtual_width, virtual_height;
    Position	new_x, new_y;
    LayoutState	layout_state;	/* temporary layout state		*/
    Boolean	deferred_resize;/* was resized while no_refigure is set */
#ifndef OLDXAW
    short	virtual_x, virtual_y;
    XtPointer	pad[2];		/* leave some space for further optimizations
				 * in the form widget geometry
				 */
#endif
} FormConstraintsPart;

typedef struct _FormConstraintsRec {
    FormConstraintsPart	form;
} FormConstraintsRec, *FormConstraints;

_XFUNCPROTOEND

#endif /* _XawFormP_h */