/* vim: set sw=8: -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
#ifndef _GNM_FORMAT_TEMPLATE_H_
# define _GNM_FORMAT_TEMPLATE_H_

#include "gnumeric.h"

G_BEGIN_DECLS

/*
 * FORMAT TEMPLATE RULES
 *
 * Authors :
 *   Almer S. Tigelaar <almer1@dds.nl>
 *   Jody Goldberg <jody@gnome.org>
 *
 * ----------------------------------------------------------------------------
 * Placement :
 *   offset :
 *     1. These can only be positive and indicate the number of
 *        columns from the side (see gravity)
 *   offset_gravity :
 *     1. This is the side to count offset from,
 *        gravity (for rows : +1=top, -1=bottom; for cols : +1=left, -1=right).
 *
 * Dimensions :
 *   size :
 *     1. The number of cols/rows from the offset, if this is <=0 than this is
 *        relative to the 'far side' otherwise it is relative to the offset.
 *
 * Frequency :
 *   direction :
 *     1. The direction to repeat in, this can be either horizontal
 *        or vertical.
 *   repeat :
 *     1. When repeat >= 0, we will repeat
 *        repeat times, if it is something else (preferably -1) we
 *        simply repeat _indefinitely_ in vertical or horizontal directions.
 *   skip :
 *     1. When skip is 0 or smaller than 0 we don't skip
 *        any rows or cols in between applications.
 *   edge :
 *     1. Can be 0 or greater. Specifies the number of rows to at least
 *        not but a repetetive style calculated from the far side.
 * ----------------
 */
typedef struct {
	int offset;       	/* Offset (top/left) */
	int offset_gravity;	/* Gravity +1 means relative to top/left, -1 relative to bottom/right */
	int size;		/* Dimensions (These form the bottom right coordinates) */
} FormatColRowInfo;

/* WARNING : do not change these or persistence will break */
typedef enum {
	FREQ_DIRECTION_NONE,
	FREQ_DIRECTION_HORIZONTAL,
	FREQ_DIRECTION_VERTICAL
} FreqDirection;

/* A collection of categories of the same name from different paths */
typedef struct {
	GList *categories;

	/* translatable via gettext in the std message domain */
	char *name;
	char *description;
} FormatTemplateCategoryGroup;

typedef struct {
	char *directory;
	gboolean is_writable;

	/* translatable via gettext in the std message domain */
	char *name;
	char *description;
} FormatTemplateCategory;

struct _GnmFormatTemplate {
	FormatTemplateCategory *category;
	GSList *members;	/* the actual TemplateMembers */
	char *filename;
	char *author;
	/* translatable via gettext in the std message domain */
	char *name;
	char *description;

	/* what to enable */
	gboolean number;
	gboolean border;
	gboolean font;
	gboolean patterns;
	gboolean alignment;

	struct _FormatEdges {
		gboolean left;
		gboolean right;
		gboolean top;
		gboolean bottom;
	} edges;

/* <private> */
	/* pre-calculate styles */
	GHashTable *table;
	gboolean invalidate_hash;

	GnmRange dimension;
};

typedef struct {
	FormatColRowInfo row; /* Row info */
	FormatColRowInfo col; /* Col info */

	/* Frequency (How many times to repeat) and in which
	 * direction and when to stop.
	 */
	FreqDirection direction;
	int repeat;
	int skip;
	int edge;

	GnmStyle *mstyle;       /* Style to apply */
} TemplateMember;

/*
 * Functions for GnmFormatTemplate
 */
GType              gnm_format_template_get_type   (void);
void               format_template_free           (GnmFormatTemplate *ft);
GnmFormatTemplate *format_template_clone          (GnmFormatTemplate const *ft);
GnmFormatTemplate *format_template_new_from_file  (char const *filename,
						   GOCmdContext *context);

gint                  format_template_compare_name             (gconstpointer a, gconstpointer b);

GnmStyle               *format_template_get_style                (GnmFormatTemplate *ft, int row, int col);
void                  format_template_apply_to_sheet_regions   (GnmFormatTemplate *ft, Sheet *sheet, GSList *regions);
gboolean	      format_template_check_valid	       (GnmFormatTemplate *ft, GSList *regions,
								GOCmdContext *cc);

G_END_DECLS

#endif /* _GNM_FORMAT_TEMPLATE_H_ */