selection_grid.h

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#ifndef SELECTION_GRID_H
#define SELECTION_GRID_H
 
#include <tonc.h>
 
typedef POINT Selection;
 
struct SelectionGridRow;
struct SelectionGrid;
typedef struct SelectionGridRow SelectionGridRow;
typedef struct SelectionGrid SelectionGrid;
 
typedef bool (*RowOnSelectionChangedFunc)(
    SelectionGrid* selection_grid,
    int row_idx,
    const Selection* prev_selection,
    const Selection* new_selection
);
 
typedef int (*RowGetSizeFunc)();
 
typedef void (*RowOnKeyTransitFunc)(SelectionGrid* selection_grid, Selection* selection);
 
typedef struct
{
 
    bool wrap;
 
    bool has_h_exit_idx;
 
    u8 h_exit_idx;
} SelGridRowAttributes;
 
struct SelectionGridRow
{
    int row_idx;
    RowGetSizeFunc get_size;
    RowOnSelectionChangedFunc on_selection_changed;
    RowOnKeyTransitFunc on_key_transit;
    SelGridRowAttributes attributes;
};
 
struct SelectionGrid
{
    const SelectionGridRow* rows;
    const int num_rows;
    Selection selection;
};
 
void selection_grid_process_input(SelectionGrid* selection_grid);
 
void selection_grid_move_selection_horz(SelectionGrid* selection_grid, int direction_tribool);
 
void selection_grid_move_selection_vert(SelectionGrid* selection_grid, int direction_tribool);
 
#endif