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/*
* Motif Tools Library, Version 3.1
* $Id$
*
* Written by David Flanagan.
* Copyright (c) 1992-2001 by David Flanagan.
* All Rights Reserved. See the file COPYRIGHT for details.
* This is open source software. See the file LICENSE for details.
* There is no warranty for this software. See NO_WARRANTY for details.
*
* $Log$
* Revision 1.1.1.1 2001/07/18 11:06:02 root
* Initial checkin.
*
* Revision 1.2 2001/06/12 16:25:28 andre
* *** empty log message ***
*
*
*/
#ifndef _XmtLayoutP_h
#define _XmtLayoutP_h
#include <Xm/BulletinBP.h>
#include <Xmt/Layout.h>
#include <Xmt/Lexer.h>
typedef enum {
XmtLayoutRow,
XmtLayoutCol,
XmtLayoutChild,
XmtLayoutSpace,
XmtLayoutString,
XmtLayoutPixmap,
XmtLayoutVSep,
XmtLayoutHSep
} XmtLayoutType;
typedef void (*XmtLayoutParserProc)(
#if NeedFunctionPrototypes
XmtLayoutWidget, String
#endif
);
typedef XtPointer (*XmtLayoutLookupTypeProc)(
#if NeedFunctionPrototypes
StringConst
#endif
);
typedef Widget (*XmtLayoutCreateProc)(
#if NeedFunctionPrototypes
StringConst, XtPointer, Widget, ArgList, Cardinal
#endif
);
/*
* The Layout class part structure contains three procedure pointers.
* These are optional methods; the fields should be statically
* initialzed to NULL, and can be dynamically set with special
* registration procedures. The reason that they are not statically
* initialzed is to avoid linking in code that is not always used.
*/
typedef struct {
XmtLayoutParserProc parser;
XmtLayoutLookupTypeProc lookup_type_proc;
XmtLayoutCreateProc create_proc;
XtPointer extension;
} XmtLayoutClassPart;
typedef struct _XmtLayoutClassRec {
CoreClassPart core_class;
CompositeClassPart composite_class;
ConstraintClassPart constraint_class;
XmManagerClassPart manager_class;
XmBulletinBoardClassPart bulletin_class;
XmtLayoutClassPart layout_class;
} XmtLayoutClassRec;
externalref XmtLayoutClassRec xmtLayoutClassRec;
typedef struct {
/* resources */
String layout;
XFontStruct *font;
XmFontList font_list;
#if XmVersion >= 2000
XmRenderTable render_table;
#endif
Dimension default_spacing;
unsigned char orientation;
Boolean debug_layout;
/* private state */
GC gc, grey_gc;
double pixpermm; /* pixels per mm; for resolution independence */
double pixperem; /* pixels per em; for font size independence */
Boolean needs_layout;
short layout_disabled;
Widget toplevel;
struct _XmtLayoutInfo *widget_info;
XmtLexer lexer;
Boolean in_parser;
Boolean geometry_okay;
} XmtLayoutPart;
typedef struct _XmtLayoutRec {
CorePart core;
CompositePart composite;
ConstraintPart constraint;
XmManagerPart manager;
XmBulletinBoardPart bulletin_board;
XmtLayoutPart layout;
} XmtLayoutRec;
typedef struct {
/* resources */
Dimension width;
Dimension height;
Dimension stretchability;
Dimension shrinkability;
Boolean allow_resize;
Boolean sensitive;
unsigned char justification;
unsigned char margin_width;
unsigned char margin_height;
unsigned char frame_type;
unsigned char frame_line_type;
unsigned char frame_position;
unsigned char frame_margin;
unsigned char frame_thickness;
unsigned char caption_position;
unsigned char caption_justification;
unsigned char caption_alignment;
unsigned char caption_margin;
XmString caption;
Widget in; /* the row or column we're in */
Position position; /* and the position we're at */
Widget after; /* or the object we're after in the layout*/
Widget before; /* or the object we're before in the layout */
/* private */
Widget first_child; /* the first item in a row or col */
Dimension pref_w, pref_h;
Dimension caption_width, caption_height;
unsigned char type;
Boolean dont_copy_caption;
} XmtLayoutConstraintsPart;
typedef struct {
XmManagerConstraintPart manager;
XmtLayoutConstraintsPart layout;
} XmtLayoutConstraintsRec, *XmtLayoutConstraints;
/*
* This structure is used to store information about children widgets
* that is parsed from the layout string before those widgets are
* created. The flags field indicates which fields in the constraints
* record are valid.
*/
typedef struct _XmtLayoutInfo {
XrmQuark name;
XmtLayoutConstraintsPart constraints;
XmtLayoutConstraintsPart dummy_constraints;
struct _XmtLayoutInfo *next;
} XmtLayoutInfo;
#define Constraint(obj, field) \
(((XmtLayoutConstraints)(((Object)obj)->object.constraints))->layout.field)
#define LayoutConstraintsRec(obj) \
((XmtLayoutConstraintsPart *)\
&(((XmtLayoutConstraints)(((Object)obj)->object.constraints))->layout))
#define LayoutConstraints(obj) \
(((XmtLayoutConstraints)(((Object)obj)->object.constraints))->layout)
#define ForEachChild(w, child)\
for(i=0;\
(i < w->composite.num_children) && (child=lw->composite.children[i]);\
i++)
#define ForEachItem(b,i)\
for(i = LayoutConstraints(b).first_child;\
i;\
i = LayoutConstraints(i).before)
/* a very big number */
/* but not so big that we're likely to overflow an unsigned short */
#define INFINITY 5000
#define XmtLAYOUT_DEFAULT_STRETCHABILITY 10
#define XmtLAYOUT_DEFAULT_SHRINKABILITY 10
/* a very gross hack */
#define XmtIsLayoutGadget(w)\
XtIsSubclass((w), xmtLayoutGadgetClass)
#define XmtUnsetRectObj(w)\
((w)->core.widget_class->core_class.class_inited &= ~0x2)
#define XmtSetRectObj(w)\
((w)->core.widget_class->core_class.class_inited |= 0x2)
#undef XtIsManaged /* XmP.h defines this to check for RectObj */
#define XtIsManaged(w)\
((XtIsRectObj(w) || XmtIsLayoutGadget(w)) && (w)->core.managed)
_XFUNCPROTOBEGIN
#if NeedFunctionPrototypes
extern void _XmtLayoutChildren(XmtLayoutWidget, XmtWideBoolean);
#else
extern void _XmtLayoutChildren();
#endif
_XFUNCPROTOEND
#endif /* _XmtLayoutP_h */
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