sheet.h 6.21 KB
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#ifndef SHEET_H
#define SHEET_H
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#define SHEET_MAX_ROWS (16 * 1024)
#define SHEET_MAX_COLS 256

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typedef GList ColStyleList;

struct Workbook;

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

	/* Edit area */
	GtkWidget  *ea_status;
	GtkWidget  *ea_button_box;
	GtkWidget  *ea_input;
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	/* The auto-expression */
	ExprTree   *auto_expr;
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	String     *auto_expr_desc;
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	GnomeCanvasItem  *auto_expr_label;
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	/* Styles */
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	Style      style;
	GHashTable *sheets;	/* keeps a list of the Sheets on this workbook */
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	/* A list with all of the formulas */
	GList      *formula_cell_list;

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	/* A queue with the cells to be evaluated */
	GList      *eval_queue;
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	int        max_iterations;
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	guchar     generation;
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} Workbook;

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

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typedef struct {
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	int        signature;
	
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	Workbook   *workbook;
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	GtkWidget  *toplevel, *col_canvas, *row_canvas;
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	GtkWidget  *sheet_view;
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	GnomeCanvasItem *col_item, *row_item;
	
	double     last_zoom_factor_used;
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	char       *name;
		   
	Style      style;
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	ColRowInfo default_col_style;
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	GList      *cols_info;
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	ColRowInfo default_row_style;
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	GList      *rows_info;
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	GHashTable *cell_hash;	/* The cells in hashed format */
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	GList      *selections;

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

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#define SHEET_SIGNATURE 0x12349876
#define IS_SHEET(x) (((Sheet *) x)->signature == SHEET_SIGNATURE)

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

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typedef  int (*sheet_cell_foreach_callback)(Sheet *sheet, int col, int row,
					    Cell *cell, void *user_data);
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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 */
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void        sheet_select_all             (Sheet *sheet);
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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);
void        sheet_selection_clear_only   (Sheet *sheet);
int         sheet_selection_equal        (SheetSelection *a, SheetSelection *b);
void        sheet_selection_append_range (Sheet *sheet, int base_col,  int base_row,
					  int start_col, int start_row,
					  int end_col,   int end_row);
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void        sheet_selection_extend_horizontal (Sheet *sheet, int count);
void        sheet_selection_extend_vertical   (Sheet *sheet, int count);
int         sheet_selection_is_cell_selected  (Sheet *sheet, int col, int row);
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/* Computation */
void        sheet_compute_cell        (Sheet *sheet, Cell *cell);
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/* Cell management */
Cell       *sheet_cell_new            (Sheet *sheet, int col, int row);
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int         sheet_cell_foreach_range  (Sheet *sheet, int only_existing,
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				       int start_col, int start_row,
				       int end_col, int end_row,
				       sheet_cell_foreach_callback callback,
				       void *closure);
Cell       *sheet_cell_get            (Sheet *sheet, int col, int row);

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/* Create new ColRowInfos from the default sheet style */
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ColRowInfo *sheet_col_new             (Sheet *sheet);
ColRowInfo *sheet_row_new             (Sheet *sheet);
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int         sheet_row_check_bound     (int row, int diff);
int         sheet_col_check_bound     (int col, int diff);
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/* Duplicates the information of a col/row */
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ColRowInfo *sheet_duplicate_colrow    (ColRowInfo *original);
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/* Retrieve information from a col/row */
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ColRowInfo *sheet_col_get_info        (Sheet *sheet, int col);
ColRowInfo *sheet_row_get_info        (Sheet *sheet, int row);
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/* Returns a pointer to a ColRowInfo: existed or freshly created */
ColRowInfo *sheet_row_get             (Sheet *sheet, int pos);
ColRowInfo *sheet_col_get             (Sheet *sheet, int pos);

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/* Add a ColRowInfo to the Sheet */
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void        sheet_col_add             (Sheet *sheet, ColRowInfo *cp);
void        sheet_row_add             (Sheet *sheet, ColRowInfo *cp);
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/* Measure distances in pixels from one col/row to another */
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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);
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/* Sets the width/height of a column row in terms of pixels */
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void        sheet_col_set_width       (Sheet *sheet, int col, int width);
void        sheet_row_set_height      (Sheet *sheet, int row, int width);
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void        sheet_col_set_selection   (Sheet *sheet, ColRowInfo *ci, int value);
void        sheet_row_set_selection   (Sheet *sheet, ColRowInfo *ri, int value);
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Style      *sheet_style_compute       (Sheet *sheet, int col, int row);

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/* Redraw */
void        sheet_redraw_cell_region  (Sheet *sheet, int start_col, int start_row,
				       int end_col, int end_row);
void        sheet_redraw_selection    (Sheet *sheet, SheetSelection *ss);
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void        sheet_redraw_all          (Sheet *sheet);
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void        sheet_update_auto_expr    (Sheet *sheet);

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/*
 * Workbook
 */
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Workbook   *workbook_new                 (void);
Workbook   *workbook_new_with_sheets     (int sheet_count);
void        workbook_attach_sheet        (Workbook *, Sheet *);
Sheet      *workbook_focus_current_sheet (Workbook *wb);
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Sheet      *workbook_get_current_sheet   (Workbook *wb);
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void        workbook_auto_expr_label_set (Workbook *wb, char *text);
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void        workbook_next_generation     (Workbook *wb);
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/*
 * Does any pending recalculations
 */
void        workbook_recalc              (Workbook *wb);

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