1 ------------------------------------------------------------------------------
3 -- GNAT ncurses Binding Samples --
9 ------------------------------------------------------------------------------
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35 ------------------------------------------------------------------------------
36 -- Author: Eugene V. Melaragno <aldomel@ix.netcom.com> 2000
39 -- $Date: 2011/03/19 12:07:18 $
40 -- Binding Version 01.00
41 ------------------------------------------------------------------------------
42 with ncurses2.util; use ncurses2.util;
43 with Terminal_Interface.Curses; use Terminal_Interface.Curses;
45 -- test effects of overlapping windows
47 procedure ncurses2.overlap_test is
49 procedure fillwin (win : Window; ch : Character);
50 procedure crosswin (win : Window; ch : Character);
52 procedure fillwin (win : Window; ch : Character) is
56 Get_Size (win, y1, x1);
57 for y in 0 .. y1 - 1 loop
58 Move_Cursor (win, y, 0);
59 for x in 0 .. x1 - 1 loop
64 when Curses_Exception => null;
65 -- write to lower right corner
68 procedure crosswin (win : Window; ch : Character) is
72 Get_Size (win, y1, x1);
73 for y in 0 .. y1 - 1 loop
74 for x in 0 .. x1 - 1 loop
75 if ((x > (x1 - 1) / 3) and (x <= (2 * (x1 - 1)) / 3))
76 or (((y > (y1 - 1) / 3) and (y <= (2 * (y1 - 1)) / 3))) then
77 Move_Cursor (win, y, x);
84 -- In a 24x80 screen like some xterms are, the instructions will
87 win1 : Window := New_Window (9, 20, 3, 3);
88 win2 : Window := New_Window (9, 20, 9, 16);
90 Set_Raw_Mode (SwitchOn => True);
92 Move_Cursor (Line => 0, Column => 0);
93 Add (Str => "This test shows the behavior of wnoutrefresh() with " &
96 Add (Str => "the shared region of two overlapping windows A and B. "&
99 Add (Str => "pattern in each window does not overlap the other.");
102 Move_Cursor (Line => 18, Column => 0);
103 Add (Str => "a = refresh A, then B, then doupdate. b = refresh B, " &
104 "then A, then doupdate");
106 Add (Str => "c = fill window A with letter A. d = fill window B " &
109 Add (Str => "e = cross pattern in window A. f = cross pattern " &
112 Add (Str => "g = clear window A. h = clear window B.");
114 Add (Str => "i = overwrite A onto B. j = overwrite " &
117 Add (Str => "^Q/ESC = terminate test.");
120 ch := Code_To_Char (Getchar);
121 exit when ch = CTRL ('Q') or ch = CTRL ('['); -- QUIT or ESCAPE
123 when 'a' => -- refresh window A first, then B
124 Refresh_Without_Update (win1);
125 Refresh_Without_Update (win2);
127 when 'b' => -- refresh window B first, then A
128 Refresh_Without_Update (win2);
129 Refresh_Without_Update (win1);
131 when 'c' => -- fill window A so it's visible
133 when 'd' => -- fill window B so it's visible
135 when 'e' => -- cross test pattern in window A
136 crosswin (win1, 'A');
137 when 'f' => -- cross test pattern in window B
138 crosswin (win2, 'B');
139 when 'g' => -- clear window A
141 Move_Cursor (win1, 0, 0);
142 when 'h' => -- clear window B
144 Move_Cursor (win2, 0, 0);
145 when 'i' => -- overwrite A onto B
146 Overwrite (win1, win2);
147 when 'j' => -- overwrite B onto A
148 Overwrite (win2, win1);
157 end ncurses2.overlap_test;