1 /* -*- c-basic-offset:2; tab-width:2; indent-tabs-mode:nil -*- */
2 
3 #ifndef __UI_SELECTION_H__
4 #define __UI_SELECTION_H__
5 
6 #include <pobl/bl_types.h> /* u_int */
7 #include <vt_str.h>
8 
9 typedef enum {
10   SEL_CHAR = 0x1,
11   SEL_WORD = 0x2,
12   SEL_LINE = 0x3,
13 
14 } ui_sel_type_t;
15 
16 typedef struct ui_sel_event_listener {
17   void *self;
18   int (*select_in_window)(void *, vt_char_t **, u_int *, int, int, int, int, int);
19   void (*reverse_color)(void *, int, int, int, int, int);
20   void (*restore_color)(void *, int, int, int, int, int);
21 
22 } ui_sel_event_listener_t;
23 
24 typedef struct ui_selection {
25   ui_sel_event_listener_t *sel_listener;
26 
27   vt_char_t *sel_str;
28   u_int sel_len;
29 
30   /*
31    * Be careful that value of col must be munis in rtl line.
32    * +-----------------------------+
33    * |          a  a  a  a  a  a  a|<= RTL line
34    *           -1 -2 -3 -4 -5 -6 -7 <= index
35    */
36 
37   int base_col_l;
38   int base_row_l;
39   int base_col_r;
40   int base_row_r;
41   int beg_col;
42   int beg_row;
43   int end_col;
44   int end_row;
45   int lock_col;
46   int lock_row;
47 
48   int prev_col;
49   int prev_row;
50 
51   int8_t is_selecting; /* ui_sel_type_t is stored */
52   int8_t is_reversed;
53   int8_t is_locked;
54   int8_t is_rect;
55 
56 } ui_selection_t;
57 
58 void ui_sel_init(ui_selection_t *sel, ui_sel_event_listener_t *listener);
59 
60 void ui_sel_final(ui_selection_t *sel);
61 
62 void ui_start_selection(ui_selection_t *sel, int col_l, int row_l, int col_r, int row_r,
63                         ui_sel_type_t type, int is_rect);
64 
65 int ui_selecting(ui_selection_t *sel, int col, int row);
66 
67 int ui_stop_selecting(ui_selection_t *sel);
68 
69 int ui_restore_selected_region_color_except_logs(ui_selection_t *sel);
70 
71 int ui_reverse_selected_region_color_except_logs(ui_selection_t *sel);
72 
73 int ui_restore_selected_region_color(ui_selection_t *sel);
74 
75 int ui_reverse_selected_region_color(ui_selection_t *sel);
76 
77 int ui_sel_clear(ui_selection_t *sel);
78 
79 int ui_selected_region_is_changed(ui_selection_t *sel, int col, int row, u_int base);
80 
81 void ui_sel_line_scrolled_out(ui_selection_t *sel, int min_row);
82 
83 #define ui_is_selecting(sel) ((sel)->is_selecting)
84 
85 #define ui_sel_is_reversed(sel) ((sel)->is_reversed)
86 
87 int ui_is_after_sel_right_base_pos(ui_selection_t *sel, int col, int row);
88 
89 int ui_is_before_sel_left_base_pos(ui_selection_t *sel, int col, int row);
90 
91 void ui_sel_lock(ui_selection_t *sel);
92 
93 #endif
94