sheet.h

#ifndef SHEET_H
#define SHEET_H

typedef GList ColStyleList;

struct Workbook;

typedef struct {
	GtkWidget  *toplevel;
	GtkWidget  *notebook;
	GtkWidget  *table;

	/* Edit area */
	GtkWidget  *ea_status;
	GtkWidget  *ea_button_box;
	GtkWidget  *ea_input;
	
	Style      style;
	GHashTable *sheets;	/* keeps a list of the Sheets on this workbook */
} Workbook;

typedef struct {
	int        base_col, base_row;
	int        start_col, start_row;
	int        end_col, end_row;
} SheetSelection;

typedef struct {
	Workbook   *parent_workbook;
	GtkWidget  *toplevel, *col_canvas, *row_canvas;
	GtkWidget  *sheet_view;
	GnomeCanvasItem *col_item, *row_item;
	
	double     last_zoom_factor_used;
	char       *name;
		   
	Style      style;

	ColRowInfo default_col_style;
	GList      *cols_info;

	ColRowInfo default_row_style;
	GList      *rows_info;
	void       *contents;

	GList      *selections;

	/* Scrolling information */
	GtkWidget  *vs, *hs;	/* The scrollbars */
	GtkObject  *va, *ha;    /* The adjustments */
	
	int        max_col_used;
	int        max_row_used;
} Sheet;

typedef  void (*sheet_col_row_callback)(Sheet *sheet, ColRowInfo *ci, void *user_data);

Sheet      *sheet_new                 (Workbook *wb, char *name);
void        sheet_destroy             (Sheet *sheet);
void        sheet_foreach_col         (Sheet *sheet, sheet_col_row_callback, void *user_data);
void        sheet_foreach_row         (Sheet *sheet, sheet_col_row_callback, void *user_data);
void        sheet_set_zoom_factor     (Sheet *sheet, double factor);
void        sheet_get_cell_bounds     (Sheet *sheet, ColType col, RowType row, int *x, int *y, int *w, int *h);

/* Selection management */
void        sheet_selection_append    (Sheet *sheet, int col, int row);
void        sheet_selection_extend_to (Sheet *sheet, int col, int row);
void        sheet_selection_clear     (Sheet *sheet);

int         sheet_selection_is_cell_selected (Sheet *sheet, int col, int row);
					 
/* Create new ColRowInfos from the default sheet style */
ColRowInfo *sheet_col_new             (Sheet *sheet);
ColRowInfo *sheet_row_new             (Sheet *sheet);

/* Duplicates the information of a col/row */
ColRowInfo *sheet_duplicate_colrow    (ColRowInfo *original);

/* Retrieve information from a col/row */
ColRowInfo *sheet_col_get_info        (Sheet *sheet, int col);
ColRowInfo *sheet_row_get_info        (Sheet *sheet, int row);

/* Add a ColRowInfo to the Sheet */
void        sheet_col_add             (Sheet *sheet, ColRowInfo *cp);
void        sheet_row_add             (Sheet *sheet, ColRowInfo *cp);

/* Measure distances in pixels from one col/row to another */
int         sheet_col_get_distance    (Sheet *sheet, int from_col, int to_col);
int         sheet_row_get_distance    (Sheet *sheet, int from_row, int to_row);

/* Sets the width/height of a column row in terms of pixels */
void        sheet_col_set_width       (Sheet *sheet, int col, int width);
void        sheet_row_set_height      (Sheet *sheet, int row, int width);

Workbook   *workbook_new              (void);
Workbook   *workbook_new_with_sheets  (int sheet_count);
void        workbook_attach_sheet     (Workbook *, Sheet *);

/*
 * Callback routine: invoked when the first view ItemGrid
 * is realized to allocate the default styles
 */
void     workbook_realized            (Workbook *, GdkWindow *);

#endif