123 lines
4.0 KiB
C
123 lines
4.0 KiB
C
/* $XConsortium: FormP.h,v 1.20 91/05/02 16:20:29 swick Exp $ */
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/* Copyright Massachusetts Institute of Technology 1987 */
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/***********************************************************
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Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts,
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and the Massachusetts Institute of Technology, Cambridge, Massachusetts.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the names of Digital or MIT not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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******************************************************************/
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/* Form widget private definitions */
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#ifndef _XawFormP_h
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#define _XawFormP_h
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#include <X11/Xaw/Form.h>
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#include <X11/ConstrainP.h>
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#define XtREdgeType "EdgeType"
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typedef enum {LayoutPending, LayoutInProgress, LayoutDone} LayoutState;
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#define XtInheritLayout ((Boolean (*)())_XtInherit)
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typedef struct {
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Boolean (*layout)(/* FormWidget, Dimension, Dimension */);
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} FormClassPart;
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/*
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* Layout(
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* FormWidget w - the widget whose children are to be configured
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* Dimension w, h - bounding box of layout to be calculated
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*
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* Stores preferred geometry in w->form.preferred_{width,height}.
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* If w->form.resize_in_layout is True, then a geometry request
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* may be made for the preferred bounding box if necessary.
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*
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* Returns True if a geometry request was granted, False otherwise.
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*/
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typedef struct _FormClassRec {
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CoreClassPart core_class;
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CompositeClassPart composite_class;
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ConstraintClassPart constraint_class;
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FormClassPart form_class;
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} FormClassRec;
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extern FormClassRec formClassRec;
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typedef struct _FormPart {
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/* resources */
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int default_spacing; /* default distance between children */
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/* private state */
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Dimension old_width, old_height; /* last known dimensions */
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int no_refigure; /* no re-layout while > 0 */
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Boolean needs_relayout; /* next time no_refigure == 0 */
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Boolean resize_in_layout; /* should layout() do geom request? */
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Dimension preferred_width, preferred_height; /* cached from layout */
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Boolean resize_is_no_op; /* Causes resize to take not action. */
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} FormPart;
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typedef struct _FormRec {
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CorePart core;
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CompositePart composite;
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ConstraintPart constraint;
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FormPart form;
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} FormRec;
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typedef struct _FormConstraintsPart {
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/*
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* Constraint Resources.
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*/
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XtEdgeType top, bottom, /* where to drag edge on resize */
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left, right;
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int dx; /* desired horiz offset */
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int dy; /* desired vertical offset */
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Widget horiz_base; /* measure dx from here if non-null */
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Widget vert_base; /* measure dy from here if non-null */
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Boolean allow_resize; /* TRUE if child may request resize */
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/*
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* Private contstraint resources.
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*/
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/*
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* What the size of this child would be if we did not impose the
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* constraint the width and height must be greater than zero (0).
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*/
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short virtual_width, virtual_height;
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/*
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* Temporary Storage for children's new possible possition.
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*/
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Position new_x, new_y;
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LayoutState layout_state; /* temporary layout state */
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Boolean deferred_resize; /* was resized while no_refigure is set */
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} FormConstraintsPart;
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typedef struct _FormConstraintsRec {
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FormConstraintsPart form;
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} FormConstraintsRec, *FormConstraints;
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#endif /* _XawFormP_h */
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