/**************************************************************************
 * GEMFINTL.H - Stuff internal to the GemFast implementation.
 *************************************************************************/

#ifndef GEMFINTL_H
#define GEMFINTL_H

#include "gemfast.h"

#include <string.h>
#include <stdio.h>

/*----------------------------------------------------------------------------
 * some macros used to declare static functions in library internals...
 *--------------------------------------------------------------------------*/

#define INTERNAL_VFUNC	static void GNEAR GREGARGS
#define INTERNAL_IFUNC	static int	GNEAR GREGARGS

/*----------------------------------------------------------------------------
 * mundane macros...
 *--------------------------------------------------------------------------*/

#ifndef NULL
  #define NULL ((void *)0)
#endif

#ifndef TRUE
  #define TRUE	1
  #define FALSE 0
#endif

/*----------------------------------------------------------------------------
 * handy function-like macros...
 *--------------------------------------------------------------------------*/

#define Array_els(a) ( sizeof(a) / sizeof((a)[0]) )

/*-------------------------------------------------------------------------
 * All dynamic dialogs get these options...
 *-----------------------------------------------------------------------*/

#define FRM_DEFAULT_DYNOPT	  (FRM_USEBLIT | FRM_MOVEABLE | FRM_MOUSEARROW)
#define FRM_MANDATORY_DYNOPT  (FRM_CENTER  | FRM_DCOMPLETE)

/*-------------------------------------------------------------------------
 * FormControl structure used by frm_dialog internals...
 *-----------------------------------------------------------------------*/

typedef struct form_control {
	OBJECT	*ptree;
	void	*blitbuffer;
	short	(*form_do) __PROTO((struct form_control *ctl));
	long	options;
	short	editobj;
	short	parentobj;
	short	moverobj;
	short	defaultobj;
	short	specialobj;
	short	select_state;
	short	treeflags;
	GRECT	littlerect;
	GRECT	scrnrect;
	GRECT	*pboundrect;
} FormControl;

/*-------------------------------------------------------------------------
 * protos...
 *-----------------------------------------------------------------------*/

extern long 			_FrmDefaults;

extern void 		 (*_AesVCleanup) __PROTO((void));

extern void *		 apl_malloc __PROTO((unsigned long amount));
extern void 		 apl_free __PROTO((void *block));
extern void 		 _ApXinit __PROTO((void));

extern FormControl * _FrmSetup __PROTO((FormControl *ctl, long options, OBJECT *ptree, GRECT *pboundrect));

extern void 		 frm_cleanup __PROTO((FormControl *ctl));
extern FormControl * frm_init __PROTO((long options, OBJECT *ptree, GRECT *pboundrect));
extern void 		 frm_start __PROTO((FormControl *ctl));
extern void 		 frm_draw __PROTO((FormControl *ctl, short obj));
extern void 		 frm_finish __PROTO((FormControl *ctl));
extern void 		 frm_move __PROTO((FormControl *ctl));
extern short		 frm_do __PROTO((FormControl *ctl, short editobj));
extern short		 frm_mdo __PROTO((FormControl *ctl));
extern void *		 frm_dovector __PROTO((void *newfunc));
extern char *		 _FrmVFormat __PROTO((char *fmt, va_list args, short *plen));
extern void 		 _FrmVFree __PROTO((char *buffer));

extern void 		 _FrmTrWidths __PROTO((OBJECT *tree, short parent, short width));
extern short		 _FrmDS2Obj __PROTO((char **ppstr, OBJECT *pobj, TEDINFO *pted, short *pwidth, short maxobjs));
extern void 		 _FrmNLPatch __PROTO((char **patch_array));
extern void 		 _FrmNL2DS __PROTO((char *strings, char **ptr_array, char **patch_array, short maxstrings));

extern short		 obj__draw __PROTO((OBJECT *tree, short obj, short depth, GRECT *cliprect));

/*----------------------------------------------------------------------------
 * Define mnemonics for internal error codes.
 *	Note that we set the base to the bottom of our staked-out range, and
 *	let the enum increment upwards from there.	Our staked-out range is
 *	currently -15199 thru -15100.
 *--------------------------------------------------------------------------*/

#define GEMFAST_ERRNO_BASE (-15199)

enum {
	gfErr_no_memory 			= GEMFAST_ERRNO_BASE,
	gfErr_vdi_handle,
	gfErr_parameter_range,
	gfErr_parameter_null,
	gfErr_resource_in_use,
	gfErr_wrong_type,
	gfErr_option_invalid,
	gfErr_action_invalid,
	gfErr_object_too_small,
	gfErr_object_too_big,
	gfSuccess = 0
};

#endif /* GEMFINTL_H */