1 ------------------------------------------------------------------------------
3 -- GNAT ncurses Binding Samples --
9 ------------------------------------------------------------------------------
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35 ------------------------------------------------------------------------------
36 -- Author: Eugene V. Melaragno <aldomel@ix.netcom.com> 2000
39 -- $Date: 2014/09/13 19:10:18 $
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)) or
76 (((y > (y1 - 1) / 3) and (y <= (2 * (y1 - 1)) / 3)))
78 Move_Cursor (win, y, x);
85 -- In a 24x80 screen like some xterms are, the instructions will
88 win1 : Window := New_Window (9, 20, 3, 3);
89 win2 : Window := New_Window (9, 20, 9, 16);
91 Set_Raw_Mode (SwitchOn => True);
93 Move_Cursor (Line => 0, Column => 0);
94 Add (Str => "This test shows the behavior of wnoutrefresh() with " &
97 Add (Str => "the shared region of two overlapping windows A and B. "&
100 Add (Str => "pattern in each window does not overlap the other.");
103 Move_Cursor (Line => 18, Column => 0);
104 Add (Str => "a = refresh A, then B, then doupdate. b = refresh B, " &
105 "then A, then doupdate");
107 Add (Str => "c = fill window A with letter A. d = fill window B " &
110 Add (Str => "e = cross pattern in window A. f = cross pattern " &
113 Add (Str => "g = clear window A. h = clear window B.");
115 Add (Str => "i = overwrite A onto B. j = overwrite " &
118 Add (Str => "^Q/ESC = terminate test.");
121 ch := Code_To_Char (Getchar);
122 exit when ch = CTRL ('Q') or ch = CTRL ('['); -- QUIT or ESCAPE
124 when 'a' => -- refresh window A first, then B
125 Refresh_Without_Update (win1);
126 Refresh_Without_Update (win2);
128 when 'b' => -- refresh window B first, then A
129 Refresh_Without_Update (win2);
130 Refresh_Without_Update (win1);
132 when 'c' => -- fill window A so it's visible
134 when 'd' => -- fill window B so it's visible
136 when 'e' => -- cross test pattern in window A
137 crosswin (win1, 'A');
138 when 'f' => -- cross test pattern in window B
139 crosswin (win2, 'B');
140 when 'g' => -- clear window A
142 Move_Cursor (win1, 0, 0);
143 when 'h' => -- clear window B
145 Move_Cursor (win2, 0, 0);
146 when 'i' => -- overwrite A onto B
147 Overwrite (win1, win2);
148 when 'j' => -- overwrite B onto A
149 Overwrite (win2, win1);
158 end ncurses2.overlap_test;